Littelfuse -INDUSTRIAL CIRCUIT PROTECTION CATALOG
INDUSTRIAL CIRCUIT PROTECTION CATALOG
AUTOMOTIVE & ELECTRONIC FUSES SURGE SUPPRESSION PRODUCTS
UL GENERAL INDUSTRIAL FUSES HIGH-SPEED FUSES MEDIUM VOLTAGE FUSES
BLOCKS & HOLDERS PRE-ENGINEERED PANELS & SWITCHES SOLAR PRODUCTS
NEW POWR-SPEED ®
High-Speed Fuses
Our Most Popular
Solar Products
LFPXV Series
Touch-Safe
Fuse Holder
LFNH Series
Fuse Holder
SPNH Series
Solar Fuse
LFNH Series
Fuse Terminal
Covers
SPXV Series
Solar Fuse
SPXI Series
In-Line Solar Fuse
LFXV15
Solar Fuse
Block & Cover
© 2022 Littelfuse, Inc. 1 Littelfuse.com
Fuses
Fuse Class & Selection Chart .........................................................02
Class L Fuses...................................................................................09
Class RK1 Fuses............................................................................... 14
Class RK5 Fuses .............................................................................. 17
Class K5 Fuses.................................................................................36
Class J Fuses................................................................................... 37
Class T Fuses...................................................................................40
Class G Fuses................................................................................... 42
Class CC / CD Fuses.........................................................................43
UL Supplemental / 10 x 38 Fuses.....................................................50
Electronic Fuses & Automotive Blade
Glass / Electronic Fuses...................................................................53
Blade / Automotive Fuses................................................................56
Medium Voltage Fuses
Medium Voltage Fuses Overview...................................................59
R-Rated Medium Voltage Fuses..................................................... 61
E-Rated Medium Voltage Fuses.....................................................63
Medium Voltage Live Parts.............................................................69
Telecommunication Products
Telecommunications Power Fuses.................................................. 70
Special Purpose Fuses
Solar-Rated Products Overview ..................................................... 78
1500 V dc Solar Rated Fuses.......................................................... 79
1000 V dc Solar Rated Fuses..........................................................89
Forklift / Stud Mounted Fuses.........................................................92
Plug Fuses........................................................................................93
MEGA® Bolt-Down Fuses...............................................................93
In-Line Fuses & Holders..................................................................94
Cable Limiters.................................................................................. 95
Cylindrical Fuses..............................................................................96
OEM Custom Products.................................................................... 97
High-Speed Square Body Fuses .....................................................99
MS Series High-Speed Fuse Microswitch ................................... 120
High-Speed Round-Body Fuses.................................................... 122
Traditional High-Speed Fuses....................................................... 128
Fuse Blocks & Holders
LF Series Fuse Blocks Overview................................................... 144
Class J Fuse Blocks....................................................................... 145
Class H , K5 & R Fuse Blocks......................................................... 148
Class T Fuse Blocks....................................................................... 154
Class G Fuse Blocks....................................................................... 160
Class CC / CD & Midget Fuse Blocks............................................. 163
LF Series Fuse Block Covers ......................................................... 167
Solar Rated Fuse Blocks................................................................ 171
Dead Front Fuse Holders............................................................... 180
Miscellaneous Fuse Blocks & Holders ......................................... 181
High-Speed Semiconductor Fuse Blocks...................................... 189
Distribution & Splicer Blocks........................................................ 193
In-Line Fuse Holders...................................................................... 211
Switch Products
Switch Products Overview............................................................ 218
Dc Disconnect Switch LS7 Series (1500 V).................................. 219
Dc Disconnect Switch LS6 Series (500 V)....................................227
Dc Disconnect Switch LS6 Series (1000 V)..................................231
Dc Disconnect Switch LS6R Series (1500 V)................................235
Pre-Engineered Solutions
LFCP Fused Selection Coordination Panel.................................... 240
LCP Fused Selective Coordination Panel...................................... 242
LPS Series POWR-Switch (Shunt Trip Disconnect)......................244
Suppression Products
Suppression Products Overview................................................... 247
Industrial Varistor Products..........................................................248
Surge Suppression Fuses..............................................................250
BVSP Suppression Fuses...............................................................252
Miscellaneous Accessories
Fuse Reducers ...............................................................................254
Box Cover Units.............................................................................255
Fuse Replacement & Custom Kit (FRCK Series)...........................256
Fuse Display & Cabinet .................................................................257
Technical Application Guide
Fuseology Fundamentals...............................................................259
Selection Considerations..............................................................260
Time-current Curves & Peak Let-through Charts.........................265
Selective Coordination..................................................................267
UL / CSA Fuse Classes & Applications..........................................270
Terms & Definitions.......................................................................272
Motor Protection Tables................................................................279
Condensed Fuse Cross Reference ................................................282
Alphanumeric Index of Catalog Numbers....................................283
Table of Contents
1
7
2
3
4
5
8
6
9
10
11
1
6
2
7
3
8
5
10
4
9
11
Littelfuse.com 2 © 2022 Littelfuse, Inc.
FUSE CLASS AND SELECTION CHART
UL CLASS LITTELFUSE
SERIES
OVERLOAD
CHARACTERISTICS
AC RATINGS DC RATINGS
RECOMMENDED
ACCESSORIES VOLTAGE
(VOLTS)
CURRENT
(AMPERES)
INTERRUPTING
(AMPERES)
VOLTAGE
(VOLTS)
CURRENT
(AMPERES)
INTERRUPTING
(AMPERES)
L
KLPC Time-Delay 600 200–6000 200 K/300 K* 480 200–6000 20,000*
– KLLU Time-Delay 600 601–4000 200,000 300 601–4000 20,000*
LDC Fast-Acting 600 150–2000 200,000 600 150–2000 50,000
RK1
LLNRK Time-Delay 250 0.1–600
200 K/300 K*
125 0.1–600
20,000*
LFR25
LLSRK_ID Time-Delay 600 0.1–600 300 0.1–600 LFR60
LLSRK Time-Delay 600 0.1–600 300 0.1–600 LFR60
KLNR Fast-Acting 250 1–600
200,000
125 1–600 LFR25
KLSR Fast-Acting 600 1–600 250
300
1–30
35–600 LFR60
RK5
FLNR_ID
Time-Delay
250 35–600
200 K/300 K*
125 35–600
20,000
LFR25 FLNR 250 0.1–600 125 0.1–600
FLSR_ID 600 0.1–600 300 0.1–600
LFR60 FLSR 600 0.1–600 300 0.1–600
IDSR 600 0.1–600 600 0.1–600
J
JTD_ID Time-Delay 600 0.8–600 200 K/300 K* 300 0.8–100 20,000*
LFJ60 • LFPSJ
JTD Time-Delay 600 0.8–600 500 110–600
JLS Fast-Acting 600 1–600 200,000 – – –
T
JLLN
Fast-Acting
300 1–1200
200,000
160
125
1–60
70–1200
20 K (1–30 A)*
20 K (35–1200 A)
LFT30 • LSCR
(700–800 A)
JLLS 600 1–1200 300 1–1200 20 K (1–1200 A)* LFT60 • LSCR
(700–800 A)
CC
CCMR Time-Delay 600 0.2–30 200 K/300 K*
250
250
300
500
0.2–2
4.5–10
2.25–4
12–30 20,000*
L60030C
LFPSC
LPSC • 571
572
LEC • LEY KLDR Time-Delay 600 0.1–30 200,000 300 0.1–30
KLKR Fast-Acting 600 0.1–30 200,000 300 0.1–30
CD
CCMR Time-Delay 600 35–60 200 K/300 K* 250 35–60 20,000* LFC60060
G
SLC Time-Lag 600
480
0.5–20
25–60 100,000 170 0.5–60 10,000* LFG600 (½–20 A)
LFG480 (25–60 A)
K5
NLN
Fast-Acting
250 1–600
50,000
250 1–600 20 K (1–60 A)
50 K (70–600 A) LFH25
NLS 600 1–600
600
500
400
600
500
1–7
8–30
35–60
70–200
225–600
20 K (1–60 A)
50 K (70–600 A) LFH60
* Littelfuse self-certified
© 2022 Littelfuse, Inc. 3 Littelfuse.com
FUSE CLASS AND SELECTION CHART
UL CLASS LITTELFUSE
SERIES
OVERLOAD
CHARACTERISTICS
AC RATINGS DC RATINGS
RECOMMENDED
ACCESSORIES VOLTAGE
(VOLTS)
CURRENT
(AMPERES)
INTERRUPTING
(AMPERES)
VOLTAGE
(VOLTS)
CURRENT
(AMPERES)
INTERRUPTING
(AMPERES)
Midget
(Supplementary)
BLF Fast-Acting 250
125
0.5–15
20–30 10,000 – – –
L60030M
571 • 572
LEB • LEX •
LPSM
BLN Fast-Acting 250 1–30 10,000 – – –
BLS Fast-Acting 600
250
0.2–5
6–10 10,000 – – –
FLA Time-Delay 125 0.1–30 10,000 – – –
FLM Time-Delay 250 0.1–30 10,000 125 0.1–30 10,000*
FLQ Time-Delay 500 0.1–30 10,000 300 0.1–30 10,000*
KLK Fast-Acting 600 0.1–30 100 K/200 K* 500 0.1–30 50,000
KLKD Fast-Acting 600 0.1–30 100 K/200 K* 600 0.1–30 50,000
KLQ Time-Delay 600 1–6 10,000 – – –
FLU Fast-Acting 1000 0.44/
11
10,000
20,000 1000 0.44
11
10,000
20,000 LPHV
Solar
SPF
Solar (gPV)
– – – 1000 1–30 20,000 (1A–20 A)
50,000 (25–30 A) LPHV
SPFJ 600 125–450 200,000 1000 70–450
20 K (70–200 A)
10 K (250–400 A)
20 K (450 A)
LFJ10 • LSCR
SPFI – – – 1000 2–30 20,000 Not Required
SPNH – – – 1500 50–400 30,000 LFNH
SPXV – – – 1500 1–60
50 K (1–20 A)*
50 K (25–30 A) LFPXV
50 K (35–60 A) LFXV150
SPXI – – – 1500 1–32
30 K (1–30 A)
30 K (1–20 A) SPXI-B
50 K (35–50 A)
50 K (35–60 A) SPXI-B
50 K (25–32 A) SPXI-M
& SPXI-BM
Not Required
SPXC – – – 1500 1–4 50,000*
High-Speed
L15S
Very Fast-Acting
150 1–1000 100,000 150
100
1–60
70–1000 20,000* LSCR • 1LFS
L25S 250 1–800
200,000
250
200
1–200
225–800
L50QS 500 35–800 500 35–800 50,000 LSCR
L50S 10–800 450 10–800 20,000 LSCR • 1LFS L60S 600 1–800 – – –
L70QS 700 35–800 700 35–800 50,000 LSCR
L75QS – – 750 35–800 50,000 LSCR
L70S 700 10–800 – 650 10–800 20,000 LSCR • 1LFS
PSR 550–700 40–2000 200,000 500–600 40–2000 150,000 MS3H1000C
PSR 1250–1300 50–700 100,000 1000 50–700 150,000 MS7H1500C
PSX – – – 1500 80–1400 250,000 MSXL2000C
Telecom
L17T
Fast-Acting
– – –
170
70–1200
100,000
LTFD Series
TLN – – – 1–600 LFR25
TLS – – – 1–125
LTFD101
LFT30060
(cartridge)
* Littelfuse self-certified
Littelfuse.com 4 © 2022 Littelfuse, Inc.
UL FUSE CLASS POWR-PRO PAGE NUMBERS
Class L KLPC & LDC 8, 10
Class RK1 LLNRK/LLSRK/LLSRK_ID 13
Class J JTD/JTD_ID 21
Class CC / CD CCMR (
2/10–60) 27
TM
Increase safety and reduce inventory
with MROplus
Your detailed reports will include:
• A streamlined current-limiting fuse inventory
recommendation
• A guide to reducing electrical hazards within your facility
• An annual cost savings estimate
• A detailed cross reference
Contact your local sales representative for the MROplus
request form.
Look for the POWR-PRO®
logo (or green
fuse label) for superior protection
Littelfuse POWR-GARD®
Advanced Protection and
Facility Savings
Increase safety with POWR-PRO® Fuses
• Superior current-limitation from 1/10–6000 amperes
• Type 2 “No Damage” coordination with NEMA
and IEC motor circuits
• Blown fuse indication (LLSRK_ID and JTD_ID Series)
• Compact motor protection (JTD/JTD_ID, CCMR Series)
• 300,000 AIR to meet trends toward higher SCCR
© 2022 Littelfuse, Inc. 5 Littelfuse.com
SPXV Series Space-Saving Solar Fuse ...................59
SPXI Series In-Line Solar Fuse................................ 61
SPNH Series 1500 V dc Solar Fuse.........................63
LPXV Series 1500 V dc Fuse Holder..................... 147
LFPXV Series 1500 V dc Fuse Holder................... 151
New Products.............................. Littelfuse.com/solar
SPFI Series 1000 V dc In-Line Solar Fuse.................69
SPF Series 1000 V dc 10x38mm Fuse ..................... 70
SPFJ Series 1000 V dc Class J Size Fuse ................. 71
LPHV 1000 V dc Fuse Holder.................................. 154
IDSR Series 600 V dc Class RK5 Fuse...................... 17
KLKD Series 600 V dc 10x38mm Fuse..................... 31
1500 V dc Solar Products 600–1000 V dc Solar Products
This catalog incorporates our line of products designed specifically for the growing solar industry. As global
standards are constantly changing, Littelfuse continues to develop circuit protection products that meet the
requirements of the evolving photovoltaic market.
Look for this logo to indicate products that are used in solar applications.
Visit our website Littelfuse.com/solar for the latest updates on approvals,
certifications, and new products.
Developing Next Generation
1500 V dc Products for High
and Low Current Ratings
LITTELFUSE SOLAR RATED PRODUCTS
Littelfuse.com 6 © 2022 Littelfuse, Inc.
To view the full line of protection relay products please visit www.Littelfuse.com/protection-relays
Since 1975, Littelfuse products have been protecting electrical systems and the people who use them. Our product
solutions withstand the harshest underground and surface mining environments to improve safety and reduce downtime.
Our Expertise in Protection Runs Deep
Protecting
Industry
Neutral-Grounding Resistors
(NGRs) and Monitors
Meet 2018 CE Code requirements
Detect shorted NGR and monitor
neutral-to-ground continuity
Ground-Fault Protection
Advanced filtering eliminates
nuisance tripping and detect ground
faults early
Reliable, sensitive ground-fault
detection down to 0 Hz on systems
with variable-frequency drives on
resistance-grounded systems
Ground-Check Relays
Combination ground-fault and groundcheck monitoring to ensure proper
equipment grounding
Our relays protect equipment at the
end of some of the longest mining
cable runs in the world
Motor and Pump Protection
Extend motor life and minimize
process downtime
Provide metering, datalogging, and
fault diagnostics
SPD2 Series Type 2
Surge Protection Devices
Safeguard components from transient
overvoltage or surges
Arc-Flash Protection
Reduce arc-flash energy and risk of
injury or equipment damage
Redundant solid-state trip circuit
provides fast and fail-safe operation
even from black start
© 2022 Littelfuse, Inc. 7 Littelfuse.com
LFCP Series Coordination Panel
Compact and easily configurable, this pre-engineered
panel is rated up to 600 V ac and available with 200 kA
SCCR rating.
Features/Benefits
• Available in standard 20” width enclosure for easy
installation
• Meets NEC selective coordination code requirements
• Class CC and J fuse holders have built-in open-circuit
indication
• Fast-acting fuses protect against short circuit
Littelfuse.com/LFCP
See page 203??
LPS Series Shunt Trip Disconnect Switch
Individual fusible shunt trip disconnect switch easily
coordinates with system’s overcurrent protection.
Typical applications include elevator circuits.
Features/Benefits
• Pre-engineered single unit makes procurement easy
• Reduces labor costs up to 66 %
• Flexibility for a variety of applications
• Control power terminal block
• UL Listed package
• Cu and AI wire rated
• Lockable operating handle meets all code and
safety requirements
Littelfuse.com/LPS
See page 207
Meet NEC Requirments
and Save Time with
Pre-Engineered Solutions
Littelfuse.com 8 © 2022 Littelfuse, Inc.
FUSES
UL Class L Fuses........................................................ 9
UL Class RK1 Fuses.................................................... 14
UL Class RK5 Fuses.................................................... 17
UL Class K5 Fuses .....................................................21
UL Class J Fuses ...................................................... 22
UL Class T Fuses.......................................................25
UL Class G Fuses ......................................................27
UL Class CC/CD Fuses ................................................28
UL Supplemental Midget (10x38) Fuses..............................31
Table of Contents
Section Overview
Since 1927 Littelfuse has been providing fuses to the industrial
market. You can continue to count on our manufacturing and supply
chain processes to deliver high quality fuses when you need them.
At Littelfuse we leverage our global reach to stay on top of the latest
applications and standards. Whether your circuit protection needs are
focused on OEM, MRO, or construction, we are committed to being
your circuit protection partner and appreciate your business.
© 2022 Littelfuse, Inc. 9 Littelfuse.com
UL Class L Fuses
Fuses – UL Class L
CLASS L - KLPC SERIES POWR-PRO® FUSES
600 Vac • Time-Delay • 200-6000 A
Web Resources
Download TC Curves, CAD drawings and other technical
information: littelfuse.com/klpc
Dimensions
Please refer to the Class L dimensions ............................. 12
Peak Let-Thru Curve
Note: For more information, see Peak Let-Thru Table on pg. 11
Ordering Information
KLPC
Description
KLPC series POWR-PRO® fuses meet or exceed the most
stringent project specifications, including silver links, silver-plated
copper end bells, glass-reinforced melamine bodies, O-ring seals
between body and end bells, and granular quartz fillers.
Applications
• Switchboard mains and feeders
• Motor control center mains
• Large motor branch circuits
• Protection of power circuit breakers
Features/Benefits
• POWR-PRO® Performance
• Best-in-class time-delay withstand
• Current-Limiting
• Easily coordinated with other system components
• 300 kA AC Interrupting Rating (self-certified)
Specifications
Voltage Ratings AC: 600 Vac or less
DC: 480 V
Ampere Range 200 – 6000 A
Interrupting Ratings AC: 200 kA rms symmetrical
300 kA rms symmetrical
(Littelfuse self-certified)
DC: 20,000 A
Approvals AC: Standard 248-10, Class L
UL Listed 601–6000 A (File: E81895)
UL Recognized 200–600 A (File: E71611)
CSA Certified 601–6000 A (File: LR29862)
Federal Specifications 700–6000 A
(QPL-W-F-1814)
DC: Littelfuse self-certified
Material Melamine body, Copper caps (silver plated)
Country of Origin Mexico
AMPERE RATINGS
200 500 800 1350 2000 3000
250 600 900 1400 2100 3500
300 601 1000 1500 2200 4000
350 650 1100 1600 2300 4500
400 700 1200 1800 2400 5000
450 750 1300 1900 2500 6000
SERIES AMPERAGE CATALOG NUMBER ORDERING NUMBER
KLPC 800 KLPC800 KLPC800.X
1
Littelfuse.com 10 © 2022 Littelfuse, Inc.
UL Class L Fuses
Fuses – UL Class L
CLASS L - KLLU SERIES FUSES
600 Vac • Time-Delay • 601-4000 A
Web Resources
Download TC Curves, CAD drawings and other technical
information: littelfuse.com/kllu
Dimensions
Please refer to the Class L dimensions ............................. 12
Peak Let-Thru Curve
Note: For more information, see Peak Let-Thru Table on pg. 11
Ordering Information
KLLU
Description
KLLU series fuses meet or exceed UL requirements for
UL Class L fuses. The KLLU series offers an economical
alternative to KLPC POWR-PRO® fuse with a slightly
higher peak let through current.
Applications
• Service switches
• Switchboard mains and feeders
• Motor control center mains
• Large motor branch circuits
• Circuit breaker protection
Features/Benefits
• Current-Limiting
• Easily coordinated with other system components
• 200 kA AC Interrupting Rating
Specifications
Voltage Ratings AC: 600 Vac or less
DC: 300 V
Ampere Range 601–4000 A
Interrupting Ratings AC: 200 kA rms symmetrical
DC: 20 kA rms symmetrical
Approvals Standard 248-10, Class L
UL Listed (File: E81895)
CSA Certified (File: LR29862)
DC: Littelfuse self-certified
Material Melamine body, Copper caps (silver plated)
Country of Origin Mexico
AMPERE RATINGS
601 750 1000 1400 1800 3000
650 800 1200 1500 2000 3500
700 900 1350 1600 2500 4000
SERIES AMPERAGE CATALOG NUMBER ORDERING NUMBER
KLLU 601 KLLU601 KLLU601.X
1
© 2022 Littelfuse, Inc. 11 Littelfuse.com
UL Class L Fuses
Fuses – UL Class L
CLASS L - LDC SERIES POWR-PRO® FUSES
600 Vac/dc • Fast Acting • 150-2000 A
Description
High DC voltage and interrupting ratings make the
POWR-PRO® LDC ideal for DC applications. The DC
interrupting performance exceeds UL listing requirements.
Applications
• Solar inverter and array protection
• UPS protection especially for large battery circuits
• DC distribution and variable speed drives
• Mass transit systems
Features/Benefits
• POWR-PRO® Performance
• Extremely Current-Limiting
• 600 Vac/dc rated
• 200 kA AC Interrupting Rating
• 50 kA DC Interrupting Rating
Specifications
Voltage Ratings 600 Vac/dc or less
Ampere Range 150–2000 A
Interrupting Ratings AC: 200 kA rms symmetrical
DC: 50 kA
Time Constant 16 ms
Approvals Standard 248-10, Class L
UL Listed 601–2000 A (File: E81895)
UL Recognized 150–600 A (File: E71611)
CSA Certified 800-2000 A (File: LR29862)
Material Melamine body, Copper caps (silver plated)
Country of Origin Mexico
AMPERE RATINGS
150 450 750 1201 1601
200 500 800 1300 1800
250 600 900 1350 1900
300 601 1000 1400 2000
350 650 1100 1500
400 700 1200 1600
Web Resources
Download TC curves, CAD drawings and other technical
documents: littelfuse.com/ldc
Dimensions
Please refer to the Class L dimensions ............................. 12
Peak Let-Thru Curve
Note: For more information, see Peak Let-Thru Table on pg. 11
SERIES AMPERAGE CATALOG NUMBER ORDERING NUMBER
LDC 700 LDC700 0LDC700.X
Ordering Information
LDC
1
Littelfuse.com 12 © 2022 Littelfuse, Inc.
UL Class L Fuses
Fuses – UL Class L
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
800 A 1200 A 1600 A 2000 A 3000 A 4000 A 5000 A 6000 A
5,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000
10,000 8,800 10,000 10,000 10,000 10,000 10,000 10,000 10,000
15,000 10,500 13,500 15,000 15,000 15,000 15,000 15,000 15,000
20,000 12,000 15,000 19,000 20,000 20,000 20,000 20,000 20,000
25,000 13,000 16,000 21,000 24,000 25,000 25,000 25,000 25,000
30,000 14,000 18,000 23,000 26,000 30,000 30,000 30,000 30,000
35,000 15,000 19,000 24,000 27,000 32,000 35,000 35,000 35,000
40,000 16,000 20,000 25,000 28,000 34,000 40,000 40,000 40,000
50,000 17,000 22,000 27,000 31,000 37,000 42,500 50,000 50,000
60,000 18,000 24,000 29,000 34,000 40,000 46,000 52,000 60,000
80,000 20,000 26,000 32,000 37,000 44,000 51,000 57,000 70,000
100,000 21,000 27,000 34,000 40,000 46,000 57,000 65,000 75,000
150,000 23,000 31,000 38,000 44,000 54,000 67,000 75,000 87,000
200,000 24,000 34,000 42,000 46,000 57,000 70,000 80,000 95,000
Current-Limiting Effects of KLPC (600 V) Fuses
Current-Limiting Effects of LDC (600 V) Fuses
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
800 A 1200 A 1600 A 2000 A
5,000 5,000 5,000 5,000 5,000
10,000 8,500 10,000 10,000 10,000
15,000 9,750 14,000 15,000 15,000
20,000 10,500 15,000 19,000 20,000
25,000 11,500 16,000 21,000 25,000
30,000 12,000 17,000 22,000 26,000
35,000 12,500 18,000 23,000 28,000
40,000 13,500 19,000 24,000 30,000
50,000 14,000 21,000 26,000 32,000
60,000 15,000 22,000 28,000 34,000
80,000 16,000 24,000 30,000 36,000
100,000 18,000 25,000 33,000 40,000
150,000 20,000 30,000 38,000 44,000
200,000 23,000 32,000 41,000 46,000
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data derived from Peak Let-Thru Curves
SHORT-CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
800 A 1200 A 1600 A 2000 A 3000 A 4000 A
5,000 5,000 5,000 5,000 5,000 5,000 5,000
10,000 10,000 10,000 10,000 10,000 10,000 10,000
15,000 11,900 15,000 15,000 15,000 15,000 15,000
20,000 13,000 18,500 20,000 20,000 20,000 20,000
25,000 14,000 20,000 25,000 25,000 25,000 25,000
30,000 14,500 21,000 26,500 30,000 30,000 30,000
35,000 15,000 22,000 28,500 34,000 35,000 35,000
40,000 16,000 23,000 30,000 35,000 37,000 40,000
50,000 17,000 24,000 32,000 38,000 39,000 44,000
60,000 18,000 26,000 34,000 42,000 43,000 50,000
80,000 19,000 28,000 36,000 44,000 46,000 54,500
100,000 21,000 30,000 38,000 46,000 48,000 57,500
150,000 24,000 35,000 44,000 50,000 51,000 68,000
200,000 26,000 38,000 48,000 53,000 60,000 74,000
Current-Limiting Effects of KLLU (600 V) Fuses
CLASS L CURRENT-LIMITING EFFECTS
1
© 2022 Littelfuse, Inc. 13 Littelfuse.com
UL Class L Fuses
Fuses – UL Class L
CLASS L SERIES DIMENSIONS
C B
J
F
M
FIG.1
A C B A
J
D E F
N
M
FIG.2
C B A D E F
G
H
N
M
J
FIG. 3
D B
G
A F
H
J
M
FIG. 5
N
M G
C B A D E F
H
J
FIG. 4
K
L
AMPERES FIG.
NO.
DIMENSIONS INCHES (mm)
A B C D E F G H J K L M N
150-800 1 33
⁄4
(95.3)
53
⁄4
(146.1)
63
⁄4
(171.5) — — 85
⁄8
(219.1) — — 2
(50.8)
21
⁄2
(63.5)
3
⁄8
(9.5)
5
⁄8 x 11
⁄8
(15.9) x (28.6) —
900-1200 2 33
⁄4
(95.3)
53
⁄4
(146.1)
63
⁄4
(171.5)
91
⁄4
(235.0)
91
⁄2
(241.3)
103
⁄4
(273.1) — — 2
(50.8)
21
⁄2
(63.5)
3
⁄8
(9.5)
5
⁄8 x 3
⁄4
(15.9) x (19.1)
5
⁄8 x 11
⁄8
(15.9) x (28.6)
1300-1600 2 33
⁄4
(95.3)
53
⁄4
(146.1)
63
⁄4
(171.5)
91
⁄4
(235.0)
91
⁄2
(241.3)
103
⁄4
(273.1) — — 23
⁄8
(60.3)
3
(76.2)
7
⁄16
(11.1)
5
⁄8 x 3
⁄4
(15.9) x (19.1)
5
⁄8 x 11
⁄8
(15.9) x (28.6)
1800-2000 2 33
⁄4
(95.3)
53
⁄4
(146.1)
63
⁄4
(171.5)
91
⁄4
(235.0)
91
⁄2
(241.3)
103
⁄4
(273.1) — — 23
⁄4
(69.9)
31
⁄2
(88.9)
1
⁄2
(12.7)
5
⁄8 x 3
⁄4
(15.9) x (19.1)
5
⁄8 x 11
⁄8
(15.9) x (28.6)
2100-2500 3 4
(101.6)
53
⁄4
(146.1)
63
⁄4
(171.5)
91
⁄4
(235.0)
91
⁄2
(241.3)
103
⁄4
(273.1)
15
⁄8
(41.3)
13
⁄4
(44.5)
31
⁄2
(88.9)
5
(127.0)
3
⁄4
(19.1)
5
⁄8 x 3
⁄4
(15.9) x (19.1)
5
⁄8 x 11
⁄8
(15.9) x (28.6)
2501-3000 3 4
(101.6)
53
⁄4
(146.1)
63
⁄4
(171.5)
91
⁄4
(235.0)
91
⁄2
(241.3)
103
⁄4
(273.1)
15
⁄8
(41.3)
13
⁄4
(44.5)
4
(101.6)
5
(127.0)
3
⁄4
(19.1)
5
⁄8 x 3
⁄4
(15.9) x (19.1)
5
⁄8 x 11
⁄8
(15.9) x (28.6)
3500-4000 4 4
(101.6)
53
⁄4
(146.1)
63
⁄4
(171.5)
91
⁄4
(235.0)
91
⁄2
(241.3)
103
⁄4
(273.1)
13
⁄4
(44.5)
31
⁄4
(82.6)
43
⁄4
(120.7)
53
⁄4
(146.1)
3
⁄4
(19.1)
5
⁄8 x 13
⁄8
(15.9) x (34.9)
5
⁄8 x 13
⁄8
(15.9) x (34.9)
4500-5000 5 4
(101.6)
53
⁄4
(146.1) — 91
⁄4
(235.0) — 103
⁄4
(273.1)
15
⁄8
(41.3)
31
⁄4
(82.6)
51
⁄4
(133.4)
71
⁄8
(181.0)
1
(25.4)
5
⁄8 DIA.
(15.9) —
6000 5 4
(101.6)
53
⁄4
(146.1) — 91
⁄4
(235.0) — 103
⁄4
(273.1)
15
⁄8
(41.3)
31
⁄4
(82.6)
51
⁄4
(133.4)
71
⁄8
(181.0)
1
(25.4)
5
⁄8 DIA.
(15.9) —
Dimensions
1
Littelfuse.com 14 © 2022 Littelfuse, Inc.
UL Class RK1 Fuses
Fuses – UL Class RK1
Note: For more information, see Peak Let-Thru Table on pg. 14
CLASS RK1 – LLNRK • LLSRK • LLSRK_ID SERIES FUSES
250/600 Vac • Dual Element • Time-Delay • 1/10-600 A
Description
RK1 fuses are extremely current-limiting fuses meaning they
greatly reduce or eliminate damage to circuits and equipment under
short-circuit conditions. Replacing existing Class H, K and RK5 fuses
with RK1 fuses is one of the easiest ways to immediately improve
the protection of plant workers and equipment.
Applications
• All general purpose circuits
• Motors
• Transformers
• Safety upgrades
Features/Benefits
• POWR-PRO Performance
• Indication available
• Dual-element design
• Extremely Current-Limiting
• IEC Type 2 “No Damage” protection to IEC and NEMA
type motor starters
• Indicating and DIN mount fuse holders available
Specifications
Voltage Ratings 600 Vac/300 Vdc (LLSRK/LLSRK_ID)
250 Vac/125 Vdc (LLNRK)
Interrupting Ratings AC: 200 kA rms symmetrical
300 kA rms symmetrical
(Littelfuse self-certified)
DC: 20 kA
Ampere Range 1/10 – 600 A
Approvals AC: Standard 248-12, Class RK1
UL Listed (File: E81895)
CSA Certified (File: LR29862)
DC: Littelfuse self-certified
Federal Specification WF-1814
(QPL- W-F-1814)
AMPERE RATINGS
1/10 1 2 8/10 6 1/4 25 80 250
15/100 1 1/8 3 7 30 90 300
2/10 1 1/4 3 2/10 8 35 100 350
1/4 1 4/10 3 1/2 9 40 110 400
3/10 1 6/10 4 10 45 125 450
4/10 1 8/10 4 1/2 12 50 150 500
1/2 2 5 15 60 175 600
6/10 2 1/4 5 6/10 17 1/2 70 200
8/10 2 1/2 6 20 75* 225
Note: All LLSRK_ID fuses rated 1 amp and above are Indicator® fuses.
*75 A is only available for the 600 V.
Recommended Fuse Holders
LFR60 Series • LFR25 Series............................................ 94
1,000
10,000
100,000
PEAK LET- THRU IN AMPERES
600A -
400A -
200A -
100A -
60A -
30A -
12A -
5A -
3.5A -
10
100
10 100 1,000 10,000 100,000
AVAILABLE FAULT CURRENT
SYMMETRICAL R.M.S. AMPERES
BASIS FOR DATA:
TEST VOLTAGE: 600V TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER:
DRAWN BY:
DATE:
REVISION:
DRAWING NO.: SHEET PEAK LET‐THRU CHARACTERISTIC CURVES
LITTELFUSE, INC. CHICAGO, IL. USA
LLL
03/14/2016
A
2 OF 6
FCC05-LSRK
LLSRK & LLSRKID 3.5A - 600A
Peak Let-Thru Curve (600 V)
Ordering Information
TYPE SERIES AMP CATALOG
NUMBER
ORDERING
NUMBER
INDICATING LLSRK_ID 60 LLSRK060ID LSRK060.TXID
NON-INDICATING LLSRK 60 LLSRK060 LSRK060.T
600 V
250 V
TYPE SERIES AMP CATALOG
NUMBER
ORDERING
NUMBER
NON-INDICATING LLNRK 80 LLNRK080 LNRK080.V
LLSRK & LLSRKID
QPL
Web Resources
Download TC Curves, CAD drawings and other technical
information: littelfuse.com/llsrk
littelfuse.com/llnrk
Dimensions
Please refer to the Class R dimensions............................. 19
1
© 2022 Littelfuse, Inc. 15 Littelfuse.com
UL Class RK1 Fuses
Fuses – UL Class RK1
CLASS RK1 – LLNRK • LLSRK • LLSRK_ID SERIES FUSES
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
3.5 A 5 A 12 A 30 A 100 A 200 A 400 A 600 A
5,000 196 251 427 586 1,764 2,821 - -
10,000 247 316 538 739 2,222 3,554 6,850 8,489
15,000 283 362 616 845 2,544 4,069 7,842 9,718
20,000 312 399 677 930 2,800 4,478 8,631 10,696
25,000 336 430 730 1,002 3,016 4,824 9,297 11,522
30,000 357 456 776 1,065 3,205 5,126 9,880 12,244
35,000 376 481 816 1,121 3,374 5,397 10,401 12,889
40,000 393 502 854 1,172 3,528 5,642 10,874 13,476
50,000 423 541 919 1,263 3,800 6,078 11,714 14,516
60,000 450 575 977 1,342 4,038 6,459 12,448 15,426
80,000 495 633 1,075 1,477 4,445 7,109 13,700 16,979
100,000 533 682 1,158 1,591 4,788 7,658 14,758 18,290
150,000 610 781 1,326 1,821 5,481 8,766 16,894 20,936
200,000 671 859 1,460 2,005 6,032 9,648 18,594 23,043
Current-Limiting Effects of LLSRK and LLSRK_ID (600 V) Fuses
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
30 A 60 A 100 A 200 A 400 A 600 A
5,000 900 1,400 2,000 2,700 4,800 5,000
10,000 1,100 1,900 2,700 3,500 6,200 8,500
15,000 1,250 2,100 3,100 4,200 7,000 9,500
20,000 1,400 2,400 3,500 4,600 8,000 10,800
25,000 1,500 2,600 3,900 5,000 8,300 11,500
30,000 1,600 2,800 4,000 5,250 9,000 12,000
35,000 1,700 2,850 4,300 5,500 9,500 12,500
40,000 1,800 3,000 4,600 5,800 9,800 13,500
50,000 1,900 3,200 4,800 6,300 10,200 14,000
60,000 2,000 3,500 5,200 6,700 11,000 15,000
80,000 2,200 3,900 5,700 7,200 12,200 16,000
100,000 2,300 4,000 6,000 8,100 12,700 17,000
150,000 2,500 4,500 6,700 9,100 14,000 19,000
200,000 2,600 4,800 7,000 9,700 15,000 20,000
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data derived from Peak Let-Thru Curves
Current-Limiting Effects of LLNRK (250 V) Fuses
Blown Fuse Indicator Assembly
Granular Quartz Filling
Precision Formed Short Circuit Element
Fiberglass Reinforced Pultruded Body
Elastomeric Silicone Overload Section
Plated End Caps
LLSRK_ID Fuses—Quality Construction
for performance you can rely on…
Littelfuse LLSRK_ID Fuses feature true dual-element
construction. This robust design withstands
repeated surges within rated time delay
without opening needlessly, eliminating
downtime caused by power surges
or equipment demands.
1
Littelfuse.com 16 © 2022 Littelfuse, Inc.
UL Class RK1 Fuses
Fuses – UL Class RK1
CLASS RK1 – KLNR / KLSR SERIES FUSES
250/600 Vac • Fast-Acting • 1-600 A
AMPERE RATINGS
1 10 40 100 250
2 12 45 110 300
3 15 50 125 350
4 20 60 150 400
5 25 70 175 450
6 30 80 200 500
8 35 90 225 600
Web Resources
Download TC Curves, CAD drawings and other technical
information: littelfuse.com/klsr
littelfuse.com/klnr
Recommended Fuse Blocks
LFR Series ......................................................................... 94
Dimensions
Please refer to the Class R dimensions............................. 19
05549002Peak Let-Thru Curve (600 V)
Ordering Information
VOLTAGE SERIES AMP CATALOG
NUMBER
ORDERING
NUMBER
600 KLSR 90 KLSR090 KLSR090.V
250 KLNR 90 KLNR090 KLNR090.V
KLSR
Description
KLSR and KLNR series are en economical design providing
the safety of a RK1 fuse. The single element design
provides fast-acting overload and short-circuit protection.
Use POWR-PRO® LLNRK and LLSRK series RK1, dualelement, time-delay fuses in all new applications requiring
the current-limiting ability of UL Class RK1 fuses or in
existing applications where fast-acting RK1 or RK5 fuses
have been opening on harmless system surges such as
motor starting currents.
Applications
• Resistance heaters
• Lighting circuits
• Non-inductive loads
Features/Benefits
• Extremely Current-Limiting
• Indicating and DIN mount fuse blocks available
Specifications
Voltage Ratings AC: 600 Vac or less (KLSR)
250 Vac or less (KLNR)
DC: 250 V (1 – 30 A KLSR);
300 V (35 – 600 A KLSR)
125 V (KLNR)
Ampere Range 1 – 600 A
Interrupting Ratings AC: 200 kA rms symmetrical
DC: 20 kA
Approvals AC: Standard 248-12, Class RK1
UL Listed (File: E81895)
CSA Certified (File: LR29862)
DC: Littelfuse self-certified
Material 1-60 A: Composite body, Bronze cap (nickel plated)
70-100 A: Composite body, Copper caps
110-600 A: Melamine body, Copper caps
Country of Origin Mexico
1
© 2022 Littelfuse, Inc. 17 Littelfuse.com
UL Class RK5 Fuses
Fuses – UL Class RK5
CLASS RK5 – IDSR SERIES
600 V ac/dc • Dual Element • Time Delay • 1
⁄10–600 A • Indicating
Description
The IDSR series combines a 600 V dc capability with indication to provide an ideal solution for many dc applications.
Applications
• Dc circuits
• Solar inverters
• Motors
• Transformers
• Solenoids
• Fluorescent lighting
Specifications
Voltage Rating Ac: 600 V
Dc: 600 V
Interrupting Ratings Ac: 200 kA rms symmetrical; 300 kA rms symmetrical (Littelfuse self-certified)
Dc: 20 kA
Ampere Range 1
⁄10–600 A
Applicable Standards UL 248-12, Class RK5
Certification & Compliance
UL UL Listed (File: E81895)
CSA CSA Certified (File: LR29862)
Features & Benefits
FEATURES BENEFITS
Excellent short-circuit protection Improve safety through faster response to fault currents
Dual-element design Provides advanced short circuit and overload protection
Current limiting Restricts fault currents to provide a high degree of circuit protection.
Visual Blown Fuse Indication Indication window turns black allowing fast and easy identification of
the fuse that needs replacement.
1
Littelfuse.com 18 © 2022 Littelfuse, Inc.
UL Class RK5 Fuses
Fuses – UL Class RK5
CLASS RK5 – IDSR SERIES
Ordering Information
AMPERE RATING CATALOG NUMBER PRODUCT MARKING PACKING QUANTITY ORDERING NUMBER UPC CODE
1⁄10 IDSR.100 IDSR 1
⁄10 10 IDSR.100T 07945801523
15⁄100 IDSR.150 IDSR 15⁄100 10 IDSR.150T 07945801524
2
⁄10 IDSR.200 IDSR 2
⁄10 10 IDSR.200T 07945801525
1
⁄4 IDSR.250 IDSR 1
⁄4 10 IDSR.250T 07945801526
3
⁄10 IDSR.300 IDSR 3
⁄10 10 IDSR.300T 07945801527
4⁄10 IDSR.400 IDSR 4
⁄10 10 IDSR.400T 07945801528
1
⁄2 IDSR.500 IDSR 1
⁄2 10 IDSR.500T 07945801529
6
⁄10 IDSR.600 IDSR 6
⁄10 10 IDSR.600T 07945801530
8
⁄10 IDSR.800 IDSR 8
⁄10 10 IDSR.800T 07945801531
1 IDSR001 IDSR 1 10 IDSR001.T 07945801532
1 1
⁄8 IDSR1.12 IDSR 1 1
⁄8 10 IDSR1.12T 07945801533
11
⁄4 IDSR1.25 IDSR 11
⁄4 10 IDSR1.25T 07945801534
14
⁄10 IDSR01.4 IDSR 14
⁄10 10 IDSR01.4T 07945801535
11
⁄2 IDSR01.5 IDSR 11
⁄2 10 IDSR01.5T 07945801536
16
⁄10 IDSR01.6 IDSR 16
⁄10 10 IDSR01.6T 07945801537
18
⁄10 IDSR01.8 IDSR 18
⁄10 10 IDSR01.8T 07945801538
2 IDSR002 IDSR 2 10 IDSR002.T 07945801539
21
⁄4 IDSR2.25 IDSR 21
⁄4 10 IDSR2.25T 07945801540
21
⁄2 IDSR02.5 IDSR 21
⁄2 10 IDSR02.5T 07945801541
28
⁄10 IDSR02.8 IDSR 28
⁄10 10 IDSR02.8T 07945801542
3 IDSR003 IDSR 3 10 IDSR003.T 07945801543
32
⁄10 IDSR03.2 IDSR 32
⁄10 10 IDSR03.2T 07945801544
31
⁄2 IDSR03.5 IDSR 31
⁄2 10 IDSR03.5T 07945801545
4 IDSR004 IDSR 4 10 IDSR004.T 07945801546
41
⁄2 IDSR04.5 IDSR 41
⁄2 10 IDSR04.5T 07945801547
5 IDSR005 IDSR 5 10 IDSR005.T 07945801548
56
⁄10 IDSR05.6 IDSR 56
⁄10 10 IDSR05.6T 07945801549
6 IDSR006 IDSR 6 10 IDSR006.T 07945801550
61
⁄4 IDSR6.25 IDSR 61
⁄4 10 IDSR6.25T 07945801551
7 IDSR007 IDSR 7 10 IDSR007.T 07945801552
71
⁄2 IDSR07.5 IDSR 71
⁄2 10 IDSR07.5T 07945801553
8 IDSR008 IDSR 8 10 IDSR008.T 07945801554
9 IDSR009 IDSR 9 10 IDSR009.T 07945801555
10 IDSR010 IDSR 10 10 IDSR010.T 07945801556
12 IDSR012 IDSR 12 10 IDSR012.T 07945801557
15 IDSR015 IDSR 15 10 IDSR015.T 07945801558
171
⁄2 IDSR17.5 IDSR 171
⁄2 10 IDSR17.5T 07945801559
Accessories
LFR60 series fuse holder 1
© 2022 Littelfuse, Inc. 19 Littelfuse.com
UL Class RK5 Fuses
Fuses – UL Class RK5
CLASS RK5 – IDSR SERIES
Ordering Information (cont.)
AMPERE RATING CATALOG NUMBER PRODUCT MARKING PACKING QUANTITY ORDERING NUMBER UPC CODE
20 IDSR020 IDSR 20 10 IDSR020.T 07945801560
25 IDSR025 IDSR 25 10 IDSR025.T 07945801561
30 IDSR030 IDSR 30 10 IDSR030.T 07945801562
35 IDSR035 IDSR 35 10 IDSR035.T 07945801563
40 IDSR040 IDSR 40 10 IDSR040.T 07945801564
45 IDSR045 IDSR 45 10 IDSR045.T 07945801565
50 IDSR050 IDSR 50 10 IDSR050.T 07945801566
60 IDSR060 IDSR 60 10 IDSR060.T 07945801567
70 IDSR070 IDSR 70 5 IDSR070.V 07945801568
75 IDSR075 IDSR 75 5 IDSR075.V 07945801569
80 IDSR080 IDSR 80 5 IDSR080.V 07945801570
90 IDSR090 IDSR 90 5 IDSR090.V 07945801571
100 IDSR100 IDSR 100 5 IDSR100.V 07945801572
110 IDSR110 IDSR 110 1 IDSR110.X 07945801573
125 IDSR125 IDSR 125 1 IDSR125.X 07945801574
150 IDSR150 IDSR 150 1 IDSR150.X 07945801575
175 IDSR175 IDSR 175 1 IDSR175.X 07945801576
200 IDSR200 IDSR 200 1 IDSR200.X 07945801577
225 IDSR225 IDSR 225 1 IDSR225.X 07945801578
250 IDSR250 IDSR 250 1 IDSR250.X 07945801579
300 IDSR300 IDSR 300 1 IDSR300.X 07945801580
350 IDSR350 IDSR 350 1 IDSR350.X 07945801581
400 IDSR400 IDSR 400 1 IDSR400.X 07945801582
450 IDSR450 IDSR 450 1 IDSR450.X 07945801583
500 IDSR500 IDSR 500 1 IDSR500.X 07945801584
600 IDSR600 IDSR 600 1 IDSR600.X 07945801585
1
Littelfuse.com 20 © 2022 Littelfuse, Inc.
UL Class RK5 Fuses
Fuses – UL Class RK5
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
1 OL for Datasheet
Littelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
GRAMS/FINISH GOOD WT
myork 8/30/2021
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 SCALE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
1 8/30/21 DRAWING CREATED MRY
A
B
C
D
E
F
G
A
B
C
D
E
F
H J
K
FIG. 1 FIG. 2
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
15 A 30 A 60 A 100 A 200 A 400 A 600 A
5,000 800 1,100 2,100 3,200 5,000 5,000 5,000
10,000 1,100 1,600 2,900 4,300 7,300 10,000 10,000
15,000 1,300 1,900 3,400 5,000 8,600 13,700 15,000
20,000 1,400 2,200 3,800 5,600 9,500 15,500 19,000
25,000 1,500 2,500 4,100 6,100 10,300 16,700 21,500
30,000 1,600 2,700 4,500 6,500 11,000 17,700 23,500
35,000 1,700 2,900 4,700 6,800 11,600 18,600 25,200
40,000 1,800 3,100 5,000 7,200 12,100 19,400 26,600
50,000 1,900 3,400 5,400 7,800 13,100 20,800 29,500
60,000 2,000 3,600 5,800 8,300 13,900 22,000 30,600
80,000 2,200 4,000 6,300 9,100 15,400 24,000 33,200
100,000 2,300 4,200 6,800 9,800 16,700 25,500 35,100
150,000 2,600 4,500 7,700 11,200 19,300 28,100 38,000
200,000 2,800 4,600 8,400 12,400 21,400 30,000 39,600
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
Current-Limiting Effects of IDSR Fuses
Dimensions
AMPS FIGURE
NUMBER
DIMENSIONS INCHES (MM)
A B C D E F G H J K
1
⁄10–30 1 5
(127.0)
0.76
(19.2)
0.63
(15.9)
0.81
(20.7)
0.09
(2.4)
0.19
(4.7)
0.61
(15.5) - - -
35–60 1 5.50
(139.7)
1
(25.1)
0.63
(15.9)
1.06
(27.0)
0.09
(2.4)
0.25
(6.4)
0.88
(22.2) - - -
70–100 2 7.88
(200.0)
1.24
(31.5)
1.06
(27.0)
1.28
(32.6)
0.13
(3.2)
0.75
(19.1) - 0.25
(6.4)
0.28
(7.1)
0.50
(12.7)
110–200 2 9.63
(244.5)
1.74
(44.2)
1.47
(37.3)
1.79
(45.4)
0.19
(4.8)
1.13
(28.6) - 0.44
(11.1)
0.28
(7.1)
0.69
(17.5)
225–400 2 11.63
(295.3)
2.50
(63.1)
2
(50.8)
2.54
(64.6)
0.25
(6.4)
1.63
(41.3) - 0.63
(15.9)
0.41
(10.3)
0.95
(24.0)
450–600 2 13.38
(339.7)
3
(76.0)
2.41
(61.1)
3.04
(77.3)
0.25
(6.4)
2
(50.8) - 0.75
(19.1)
0.53
(13.5)
1.13
(28.6)
CLASS RK5 – IDSR SERIES
1
© 2022 Littelfuse, Inc. 21 Littelfuse.com
UL Class RK5 Fuses
Fuses – UL Class RK5
250 V ac • Dual Element • Time Delay • 1
⁄10–600 A
Description
The FLNR series sets the standard for general purpose fuses. The dual-element design provides advanced short circuit and
overload protection.
Also available in indicating version, see FLNR_ID series.
Applications
• Service entrance switches
Transformers
Switchboard mains and feeders
• Motor control central mains and motor branch circuits
• All general purpose circuits
Specifications
Voltage Rating Ac: 250 V
Dc: 125 V
Interrupting Ratings Ac: 200 kA rms symmetrical; 300 kA rms symmetrical (Littelfuse self-certified)
Dc: 20 kA
Ampere Range 1
⁄10–600 A
Applicable Standards UL 248-12, Class RK5
Features & Benefits
FEATURES BENEFITS
Dual-element design Provides advanced short circuit and overload protection
Current limiting Restricts fault currents to provide a high degree of circuit protection.
CLASS RK5 – FLNR SERIES
1
Littelfuse.com 22 © 2022 Littelfuse, Inc.
UL Class RK5 Fuses
Fuses – UL Class RK5
AMPERE RATING CATALOG NUMBER PRODUCT MARKING PACKING QUANTITY ORDERING NUMBER UPC CODE
1
⁄10 FLNR.100 FLNR 1
⁄10 A 10 FLNR.100T 07945815011
1
⁄8 FLNR.125 FLNR 1
⁄8A 10 FLNR.125T 07945815012
15⁄100 FLNR.150 FLNR 15⁄100A 10 FLNR.150T 07945815013
2
⁄10 FLNR.200 FLNR 2
⁄10A 10 FLNR.200T 07945815018
1⁄4 FLNR.250 FLNR 1
⁄4A 10 FLNR.250T 07945815019
3
⁄10 FLNR.300 FLNR 3
⁄10A 10 FLNR.300T 07945800086
4⁄10 FLNR.400 FLNR 4
⁄10A 10 FLNR.400T 07945815023
1⁄2 FLNR.500 FLNR 1
⁄2A 10 FLNR.500T 07945815024
6⁄10 FLNR.600 FLNR 6
⁄10A 10 FLNR.600T 07945800087
8⁄10 FLNR.800 FLNR 8
⁄10A 10 FLNR.800T 07945800088
1 FLNR001 FLNR 1A 10 FLNR001.T 07945815031
11
⁄8 FLNR1.12 FLNR 11
⁄8A 10 FLNR1.12T 07945815032
11
⁄4 FLNR1.25 FLNR 11
⁄4A 10 FLNR1.25T 07945815034
14
⁄10 FLNR01.4 FLNR 14
⁄10A 10 FLNR01.4T 07945815036
11
⁄2 FLNR01.5 FLNR 11
⁄2A 10 FLNR01.5T 07945815037
16
⁄10 FLNR01.6 FLNR 16
⁄10A 10 FLNR01.6T 07945815038
18
⁄10 FLNR01.8 FLNR 18
⁄10A 10 FLNR01.8T 07945815040
2 FLNR002 FLNR 2A 10 FLNR002.T 07945815041
21
⁄4 FLNR2.25 FLNR 21
⁄4A 10 FLNR2.25T 07945815042
21
⁄2 FLNR02.5 FLNR 21
⁄2A 10 FLNR02.5T 07945815043
28
⁄10 FLNR02.8 FLNR 28
⁄10A 10 FLNR02.8T 07945815046
3 FLNR003 FLNR 3A 10 FLNR003.T 07945815047
32
⁄10 FLNR03.2 FLNR 32
⁄10A 10 FLNR03.2T 07945815049
31
⁄2 FLNR03.5 FLNR 31
⁄2A 10 FLNR03.5T 07945815051
4 FLNR004 FLNR 4A 10 FLNR004.T 07945815053
41
⁄2 FLNR04.5 FLNR 41
⁄2A 10 FLNR04.5T 07945815054
5 FLNR005 FLNR 5A 10 FLNR005.T 07945815055
56
⁄10 FLNR05.6 FLNR 56
⁄10A 10 FLNR05.6T 07945815056
6 FLNR006 FLNR 6A 10 FLNR006.T 07945815058
61
⁄4 FLNR6.25 FLNR 61
⁄4A 10 FLNR6.25T 07945815059
7 FLNR007 FLNR 7A 10 FLNR007.T 07945815061
Certification & Compliance
UL UL Listed (File: E81895)
CSA CSA Certified (File: LR29862)
Accessories
LFR25 series fuse holder
Ordering Information
CLASS RK5 – FLNR SERIES
1
© 2022 Littelfuse, Inc. 23 Littelfuse.com
UL Class RK5 Fuses
Fuses – UL Class RK5
Ordering Information (cont.)
AMPERE RATING CATALOG NUMBER PRODUCT MARKING PACKING QUANTITY ORDERING NUMBER UPC CODE
71
⁄2 FLNR07.5 FLNR 71
⁄2A 10 FLNR07.5T 07945815062
8 FLNR008 FLNR 8A 10 FLNR008.T 07945815063
9 FLNR009 FLNR 9A 10 FLNR009.T 07945815064
10 FLNR010 FLNR 10A 10 FLNR010.T 07945815065
12 FLNR012 FLNR 12A 10 FLNR012.T 07945815066
15 FLNR015 FLNR 15A 10 FLNR015.T 07945815068
171
⁄2 FLNR17.5 FLNR 171
⁄2A 10 FLNR17.5T 07945815069
20 FLNR020 FLNR 20A 10 FLNR020.T 07945815071
25 FLNR025 FLNR 25A 10 FLNR025.T 07945815072
30 FLNR030 FLNR 30A 10 FLNR030.T 07945815073
35 FLNR035 FLNR 35A 10 FLNR035.T 07945815074
40 FLNR040 FLNR 40A 10 FLNR040.T 07945815075
45 FLNR045 FLNR 45A 10 FLNR045.T 07945815076
50 FLNR050 FLNR 50A 10 FLNR050.T 07945815077
60 FLNR060 FLNR 60A 10 FLNR060.T 07945815078
70 FLNR070 FLNR 70A 5 FLNR070.V 07945815079
75 FLNR075 FLNR 75A 5 FLNR075.V 07945805561
80 FLNR080 FLNR 80A 5 FLNR080.V 07945815080
90 FLNR090 FLNR 90A 5 FLNR090.V 07945815081
100 FLNR100 FLNR 100A 5 FLNR100.V 07945815082
110 FLNR110 FLNR 110A 1 FLNR110.X 07945815083
125 FLNR125 FLNR 125A 1 FLNR125.X 07945815084
150 FLNR150 FLNR 150A 1 FLNR150.X 07945815086
175 FLNR175 FLNR 175A 1 FLNR175.X 07945815087
200 FLNR200 FLNR 200A 1 FLNR200.X 07945815088
225 FLNR225 FLNR 225A 1 FLNR225.X 07945815089
250 FLNR250 FLNR 250A 1 FLNR250.X 07945815090
300 FLNR300 FLNR 300A 1 FLNR300.X 07945815091
350 FLNR350 FLNR 350A 1 FLNR350.X 07945815092
400 FLNR400 FLNR 400A 1 FLNR400.X 07945815093
450 FLNR450 FLNR 450A 1 FLNR450.X 07945815095
500 FLNR500 FLNR 500A 1 FLNR500.X 07945815096
600 FLNR600 FLNR 600A 1 FLNR600.X 07945815098
CLASS RK5 – FLNR SERIES
1
Littelfuse.com 24 © 2022 Littelfuse, Inc.
UL Class RK5 Fuses
Fuses – UL Class RK5
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
1 OL for Datasheet
Littelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
GRAMS/FINISH GOOD WT
myork 8/30/2021
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 SCALE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
1 8/30/21 DRAWING CREATED MRY
A
B
C
D
E
F
G
A
B
C
D
E
F
H J
K
FIG. 1 FIG. 2
AMPS FIGURE
NUMBER
DIMENSIONS INCHES (MM)
A B C D E F G H J K
1
⁄10–30 1 2.00
(50.8)
0.50
(12.7)
0.50
(12.7)
0.56
(14.3)
0.07
(1.8)
0.16
(4.0)
0.38
(9.5) - - -
35–60 1 3.00
(76.2)
0.76
(19.2)
0.63
(15.9)
0.81
(20.7)
0.09
(2.4)
0.19
(4.7)
0.63
(15.9) - - -
70–100 2 5.88
(149.2)
1
(25.1)
1.06
(27.0)
1.03
(26.2)
0.13
(3.2)
0.75
(19.1) - 0.25
(6.4)
0.28
(7.1)
0.50
(12.7)
110–200 2 7.13
(181)
1.50
(37.9)
1.47
(37.3)
1.54
(39.0)
0.19
(4.8)
1.13
(28.6) - 0.44
(11.1)
0.28
(7.1)
0.69
(17.5)
225–400 2 8.63
(219.1)
2
(50.4)
1.94
(49.2)
2.00
(50.8)
0.25
(6.4)
1.63
(41.3) - 0.63
(15.9)
0.41
(10.3)
0.94
(23.8)
450–600 2 10.38
(263.5)
2.50
(63.1)
2.38
(60.3)
2.54
(64.6)
0.25
(6.4)
2
(50.8) - 0.75
(19.1)
0.53
(13.5)
1.13
(28.6)
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
30 A 60 A 100 A 200 A 400 A 600 A
5,000 1,400 2,100 3,100 5,000 5,000 5,000
10,000 1,550 2,500 3,900 6,500 9,500 10,000
15,000 2,000 3,150 4,400 7,250 10,500 14,000
20,000 2,250 3,400 5,000 8,250 12,000 16,000
25,000 2,400 3,750 5,250 9,000 12,500 16,500
30,000 2,550 4,100 5,600 9,500 13,500 18,000
35,000 2,650 4,300 5,800 9,750 14,000 19,000
40,000 2,800 4,400 6,250 10,250 15,000 20,000
50,000 3,000 5,000 6,500 10,500 16,000 21,000
60,000 3,200 5,250 7,000 11,500 17,000 23,000
80,000 3,400 5,750 7,500 12,500 19,000 25,500
100,000 3,850 6,000 8,000 13,500 21,000 27,500
150,000 4,100 7,000 9,000 15,200 24,000 31,500
200,000 4,300 7,500 9,750 16,500 26,000 34,000
Current-Limiting Effects of FLNR Fuses
Dimensions
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
CLASS RK5 – FLNR SERIES
1
© 2022 Littelfuse, Inc. 25 Littelfuse.com
UL Class RK5 Fuses
Fuses – UL Class RK5
CLASS RK5 – FLNR_ID SERIES INDICATOR® FUSES
1
250 V ac • Dual Element • Time Delay • 35–600 A • Indicating
Description
The FLNR_ID Indicator™ fuses provide visual blown fuse indication at a glance. The patented state-of-the-art solid
state design provides maximum reliability and superior performance characteristics in a true dual-element design.
The use of Indicator fuses reduces down-time, nuisance opening, increases safety, and can save thousands of dollars
in lost production time. The FLNR_ID series sets the standard for general purpose fuses. The dual-element design
provides advanced short circuit and overload protection.
Also available in non-indicating version, see FLNR series.
Applications
• Service entrance switches
• Transformers
• Switchboard mains and feeders
• Motor control central mains and motor branch circuits
• All general purpose circuits
Specifications
Voltage Rating Ac: 250 V
Dc: 125 V
Interrupting Ratings Ac: 200 kA rms symmetrical; 300 kA rms symmetrical (Littelfuse self-certified)
Dc: 20 kA
Ampere Range 35–600 A
Applicable Standards UL 248-12, Class RK5
Features & Benefits
FEATURES BENEFITS
Dual-element design Provides advanced short circuit and overload protection
Current limiting Restricts fault currents to provide a high degree of circuit protection.
Visual Blown Fuse Indication Indication window turns black allowing fast and easy identification of
the fuse that needs replacement.
Littelfuse.com 26 © 2022 Littelfuse, Inc.
UL Class RK5 Fuses
Fuses – UL Class RK5
CLASS RK5 – FLNR_ID SERIES INDICATOR® FUSES
1
AMPERE RATING CATALOG NUMBER PRODUCT MARKING PACKING QUANTITY ORDERING NUMBER UPC CODE
35 FLNR035ID FLNR 35ID 10 FLNR035.TXID 07945802380
40 FLNR040ID FLNR 40ID 10 FLNR040.TXID 07945802381
45 FLNR045ID FLNR 45ID 10 FLNR045.TXID 07945802382
50 FLNR050ID FLNR 50ID 10 FLNR050.TXID 07945802383
60 FLNR060ID FLNR 60ID 10 FLNR060.TXID 07945802384
70 FLNR070ID FLNR 70ID 5 FLNR070.VXID 07945802385
80 FLNR080ID FLNR 80ID 5 FLNR080.VXID 07945802386
90 FLNR090ID FLNR 90ID 5 FLNR090.VXID 07945802387
100 FLNR100ID FLNR 100ID 5 FLNR100.VXID 07945802388
110 FLNR110ID FLNR 110ID 1 FLNR110.XXID 07945802389
125 FLNR125ID FLNR 125ID 1 FLNR125.XXID 07945802390
150 FLNR150ID FLNR 150ID 1 FLNR150.XXID 07945802391
175 FLNR175ID FLNR 175ID 1 FLNR175.XXID 07945802392
200 FLNR200ID FLNR 200ID 1 FLNR200.XXID 07945802393
225 FLNR225ID FLNR 225ID 1 FLNR225.XXID 07945802394
250 FLNR250ID FLNR 250ID 1 FLNR250.XXID 07945802395
300 FLNR300ID FLNR 300ID 1 FLNR300.XXID 07945802396
350 FLNR350ID FLNR 350ID 1 FLNR350.XXID 07945802397
400 FLNR400ID FLNR 400ID 1 FLNR400.XXID 07945802398
450 FLNR450ID FLNR 450ID 1 FLNR450.XXID 07945802399
500 FLNR500ID FLNR 500ID 1 FLNR500.XXID 07945802400
600 FLNR600ID FLNR 600ID 1 FLNR600.XXID 07945802401
Certification & Compliance
UL UL Listed (File: E81895)
CSA CSA Certified (File: LR29862)
Accessories
LFR25 series fuse holder
Ordering Information
© 2022 Littelfuse, Inc. 27 Littelfuse.com
UL Class RK5 Fuses
Fuses – UL Class RK5
CLASS RK5 – FLNR_ID SERIES INDICATOR® FUSES
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
30 A 60 A 100 A 200 A 400 A 600 A
5,000 1,400 2,100 3,100 5,000 5,000 5,000
10,000 1,550 2,500 3,900 6,500 9,500 10,000
15,000 2,000 3,150 4,400 7,250 10,500 14,000
20,000 2,250 3,400 5,000 8,250 12,000 16,000
25,000 2,400 3,750 5,250 9,000 12,500 16,500
30,000 2,550 4,100 5,600 9,500 13,500 18,000
35,000 2,650 4,300 5,800 9,750 14,000 19,000
40,000 2,800 4,400 6,250 10,250 15,000 20,000
50,000 3,000 5,000 6,500 10,500 16,000 21,000
60,000 3,200 5,250 7,000 11,500 17,000 23,000
80,000 3,400 5,750 7,500 12,500 19,000 25,500
100,000 3,850 6,000 8,000 13,500 21,000 27,500
150,000 4,100 7,000 9,000 15,200 24,000 31,500
200,000 4,300 7,500 9,750 16,500 26,000 34,000
Current-Limiting Effects of FLNR_ID Fuses CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
1 OL for DatashLittelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
GFINISH GOmyork 8/30/2021
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATIOOF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SSCALE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
1 8/30/21 DRAWING CREATED MRY
A
B
C
D
E
F
G
A
B
C
D
E
F
H J
K
FIG. 1 FIG. 2
Dimensions
AMPS FIGURE
NUMBER
DIMENSIONS INCHES (MM)
A B C D E F G H J K
35–60 1 3.00
(76.2)
0.76
(19.2)
0.63
(15.9)
0.81
(20.7)
0.09
(2.4)
0.19
(4.7)
0.63
(15.9) - - -
70–100 2 5.88
(149.2)
1
(25.1)
1.06
(27.0)
1.03
(26.2)
0.13
(3.2)
0.75
(19.1) - 0.25
(6.4)
0.28
(7.1)
0.50
(12.7)
110–200 2 7.13
(181)
1.50
(37.9)
1.47
(37.3)
1.54
(39.0)
0.19
(4.8)
1.13
(28.6) - 0.44
(11.1)
0.28
(7.1)
0.69
(17.5)
225–400 2 8.63
(219.1)
2
(50.4)
1.94
(49.2)
2.00
(50.8)
0.25
(6.4)
1.63
(41.3) - 0.63
(15.9)
0.41
(10.3)
0.94
(23.8)
450–600 2 10.38
(263.5)
2.50
(63.1)
2.38
(60.3)
2.54
(64.6)
0.25
(6.4)
2
(50.8) - 0.75
(19.1)
0.53
(13.5)
1.13
(28.6)
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
1
Littelfuse.com 28 © 2022 Littelfuse, Inc.
UL Class RK5 Fuses
Fuses – UL Class RK5
600 V ac • Dual Element • Time Delay • 1
⁄10–600 A
Description
Littelfuse FLSR series fuses have been the superior UL Class RK5 dual-element time-delay fuses, and are the most
widely used class of fuses. FLSR series fuses provide excellent protection for all types of circuits especially those
containing motors.
Also available in indicating version, see FLSR_ID series.
Applications
• Service entrance switches
• Transformers
• Switchboard mains and feeders
• Motor control central mains and motor branch circuits
• All general purpose circuits
Specifications
Voltage Rating Ac: 600 V
Dc: 300 V
Interrupting Ratings Ac: 200 kA rms symmetrical; 300 kA rms symmetrical (Littelfuse self-certified)
Dc: 20 kA
Ampere Range 1
⁄10–600 A
Applicable Standards UL 248-12, Class RK5
Features & Benefits
FEATURES BENEFITS
Excellent short-circuit protection Improve safety through faster response to fault currents
Dual-element design Provides advanced short circuit and overload protection
Current limiting Restricts fault currents to provide a high degree of circuit protection.
CLASS RK5 – FLSR SERIES
1
© 2022 Littelfuse, Inc. 29 Littelfuse.com
UL Class RK5 Fuses
Fuses – UL Class RK5
CLASS RK5 – FLSR SERIES
Certification & Compliance
UL UL Listed (File: E81895)
CSA CSA Certified (File: LR29862)
Accessories
LFR60 series fuse holder
Ordering Information
AMPERE RATING CATALOG NUMBER PRODUCT MARKING PACKING QUANTITY ORDERING NUMBER UPC CODE
1
⁄10 FLSR.100 FLSR 1
⁄10 A 10 FLSR.100T 07945817011
15⁄100 FLSR.150 FLSR 15⁄100 A 10 FLSR.150T 07945817013
2
⁄10 FLSR.200 FLSR 2
⁄10 A 10 FLSR.200T 07945817018
1
⁄4 FLSR.250 FLSR 1
⁄4 A 10 FLSR.250T 07945817019
3
⁄10 FLSR.300 FLSR 3
⁄10 A 10 FLSR.300T 07945800092
4
⁄10 FLSR.400 FLSR 4
⁄10 A 10 FLSR.400T 07945817023
1
⁄2 FLSR.500 FLSR 1
⁄2 A 10 FLSR.500T 07945817024
6
⁄10 FLSR.600 FLSR 6
⁄10 A 10 FLSR.600T 07945800093
8
⁄10 FLSR.800 FLSR 8
⁄10 A 10 FLSR.800T 07945800094
1 FLSR001 FLSR 1A 10 FLSR001.T 07945817031
11
⁄8 FLSR1.12 FLSR 11
⁄8 A 10 FLSR1.12T 07945817032
11
⁄4 FLSR1.25 FLSR 11
⁄4 A 10 FLSR1.25T 07945817034
14
⁄10 FLSR01.4 FLSR 14
⁄10 A 10 FLSR01.4T 07945817036
11
⁄2 FLSR01.5 FLSR 11
⁄2 A 10 FLSR01.5T 07945817037
16
⁄10 FLSR01.6 FLSR 16
⁄10 A 10 FLSR01.6T 07945817038
18
⁄10 FLSR01.8 FLSR 18
⁄10 A 10 FLSR01.8T 07945817040
2 FLSR002 FLSR 2A 10 FLSR002.T 07945817041
21
⁄4 FLSR2.25 FLSR 21
⁄4 A 10 FLSR2.25T 07945817042
21
⁄2 FLSR02.5 FLSR 21
⁄2 A 10 FLSR02.5T 07945817043
28
⁄10 FLSR02.8 FLSR 28
⁄10 A 10 FLSR02.8T 07945817046
3 FLSR003 FLSR 3A 10 FLSR003.T 07945817047
32
⁄10 FLSR03.2 FLSR 32
⁄10 A 10 FLSR03.2T 07945817049
31
⁄2 FLSR03.5 FLSR 31
⁄2 A 10 FLSR03.5T 07945817051
4 FLSR004 FLSR 4A 10 FLSR004.T 07945817053
41
⁄2 FLSR04.5 FLSR 41
⁄2 A 10 FLSR04.5T 07945817054
5 FLSR005 FLSR 5A 10 FLSR005.T 07945817055
56
⁄10 FLSR05.6 FLSR 56
⁄10 A 10 FLSR05.6T 07945817056
6 FLSR006 FLSR 6A 10 FLSR006.T 07945817058
61
⁄4 FLSR6.25 FLSR 61
⁄4 A 10 FLSR6.25T 07945817059
7 FLSR007 FLSR 7A 10 FLSR007.T 07945817061
71
⁄2 FLSR07.5 FLSR 71
⁄2 A 10 FLSR07.5T 07945817062
1
Littelfuse.com 30 © 2022 Littelfuse, Inc.
UL Class RK5 Fuses
Fuses – UL Class RK5
Ordering Information (cont.)
AMPERE RATING CATALOG NUMBER PRODUCT MARKING PACKING QUANTITY ORDERING NUMBER UPC CODE
8 FLSR008 FLSR 8A 10 FLSR008.T 07945817063
9 FLSR009 FLSR 9A 10 FLSR009.T 07945817064
10 FLSR010 FLSR 10A 10 FLSR010.T 07945817065
12 FLSR012 FLSR 12A 10 FLSR012.T 07945817066
15 FLSR015 FLSR 15A 10 FLSR015.T 07945817068
171
⁄2 FLSR17.5 FLSR 171
⁄2A 10 FLSR17.5T 07945817069
20 FLSR020 FLSR 20A 10 FLSR020.T 07945817071
25 FLSR025 FLSR 25A 10 FLSR025.T 07945817072
30 FLSR030 FLSR 30A 10 FLSR030.T 07945817073
35 FLSR035 FLSR 35A 10 FLSR035.T 07945817074
40 FLSR040 FLSR 40A 10 FLSR040.T 07945817075
45 FLSR045 FLSR 45A 10 FLSR045.T 07945817076
50 FLSR050 FLSR 50A 10 FLSR050.T 07945817077
60 FLSR060 FLSR 60A 10 FLSR060.T 07945817078
70 FLSR070 FLSR 70A 5 FLSR070.V 07945817079
75 FLSR075 FLSR 75A 5 FLSR075.V 07945800217
80 FLSR080 FLSR 80A 5 FLSR080.V 07945817080
90 FLSR090 FLSR 90A 5 FLSR090.V 07945817081
100 FLSR100 FLSR 100A 5 FLSR100.V 07945817082
110 FLSR110 FLSR 110A 1 FLSR110.X 07945817083
125 FLSR125 FLSR 125A 1 FLSR125.X 07945817084
150 FLSR150 FLSR 150A 1 FLSR150.X 07945817086
175 FLSR175 FLSR 175A 1 FLSR175.X 07945817087
200 FLSR200 FLSR 200A 1 FLSR200.X 07945817088
225 FLSR225 FLSR 225A 1 FLSR225.X 07945817089
250 FLSR250 FLSR 250A 1 FLSR250.X 07945817090
300 FLSR300 FLSR 300A 1 FLSR300.X 07945817091
350 FLSR350 FLSR 350A 1 FLSR350.X 07945817092
400 FLSR400 FLSR 400A 1 FLSR400.X 07945817093
450 FLSR450 FLSR 450A 1 FLSR450.X 07945817095
500 FLSR500 FLSR 500A 1 FLSR500.X 07945817096
600 FLSR600 FLSR 600A 1 FLSR600.X 07945817098
CLASS RK5 – FLSR SERIES
1
© 2022 Littelfuse, Inc. 31 Littelfuse.com
UL Class RK5 Fuses
Fuses – UL Class RK5
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
1 OL for DatashLittelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
GFINISH GOmyork 8/30/2021
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATIOOF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SSCALE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
1 8/30/21 DRAWING CREATED MRY
A
B
C
D
E
F
G
A
B
C
D
E
F
H J
K
FIG. 1 FIG. 2
AMPS FIGURE
NUMBER
DIMENSIONS INCHES (MM)
A B C D E F G H J K
1
⁄10–30 1 5
(127.0)
0.76
(19.2)
0.63
(15.9)
0.81
(20.7)
0.09
(2.4)
0.19
(4.7)
0.61
(15.5) - - -
35–60 1 5.50
(139.7)
1
(25.1)
0.63
(15.9)
1.06
(27.0)
0.09
(2.4)
0.25
(6.4)
0.88
(22.2) - - -
70–100 2 7.88
(200.0)
1.24
(31.5)
1.06
(27.0)
1.28
(32.6)
0.13
(3.2)
0.75
(19.1) - 0.25
(6.4)
0.28
(7.1)
0.50
(12.7)
110–200 2 9.63
(244.5)
1.74
(44.2)
1.47
(37.3)
1.79
(45.4)
0.19
(4.8)
1.13
(28.6) - 0.44
(11.1)
0.28
(7.1)
0.69
(17.5)
225–400 2 11.63
(295.3)
2.50
(63.1)
2
(50.8)
2.54
(64.6)
0.25
(6.4)
1.63
(41.3) - 0.63
(15.9)
0.41
(10.3)
0.95
(24.0)
450–600 2 13.38
(339.7)
3
(76.0)
2.41
(61.1)
3.04
(77.3)
0.25
(6.5)
2
(50.8) - 0.75
(19.1)
0.53
(13.5)
1.13
(28.6)
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
30 A 60 A 100 A 200 A 400 A 600 A
5,000 1,250 2,100 3,200 5,000 5,000 5,000
10,000 1,600 2,850 4,300 7,250 10,000 10,000
15,000 1,800 3,400 5,000 8,500 13,500 15,000
20,000 2,250 3,800 5,500 9,500 15,750 19,000
25,000 2,450 4,100 5,700 10,250 17,000 21,000
30,000 2,700 4,500 6,400 10,750 18,000 23,000
35,000 2,900 4,800 6,700 11,500 19,000 24,250
40,000 3,000 5,000 7,250 12,000 19,500 27,000
50,000 3,400 5,250 7,750 13,000 21,000 29,000
60,000 3,600 5,750 8,100 14,000 22,000 30,500
80,000 3,900 6,250 9,000 15,000 24,000 33,000
100,000 4,300 6,750 9,750 16,500 26,000 35,000
150,000 4,500 7,600 11,100 19,000 28,000 38,000
200,000 4,600 8,400 12,250 21,500 30,000 40,000
Current-Limiting Effects of FLSR Fuses
Dimensions
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
CLASS RK5 – FLSR SERIES
1
Littelfuse.com 32 © 2022 Littelfuse, Inc.
UL Class RK5 Fuses
Fuses – UL Class RK5
600 V ac • Dual Element • Time Delay • 1
⁄10–600 A • Indicating
Description
Littelfuse FLSR_ID Indicator™ fuses provide visual blown fuse indication at a glance. The patented state-of-the-art solid state
design provides maximum reliability and superior performance characteristics in a true dual-element design. The use of
Indicator fuses reduces down-time, nuisance opening, increases safety, and can save thousands of dollars in lost production
time. The FLSR_ID series fuses provide excellent protection for all types of circuits especially those containing motors.
Also available in non-indicating version, see FLSR series.
Applications
• Service entrance switches
• Transformers
• Switchboard mains and feeders
• Motor control central mains and motor branch circuits
• All general purpose circuits
Specifications
Voltage Rating Ac: 600 V
Dc: 300 V
Interrupting Ratings Ac: 200 kA rms symmetrical; 300 kA rms symmetrical (Littelfuse self-certified)
Dc: 20 kA
Ampere Range 1
⁄10–600 A
Applicable Standards UL 248-12, Class RK5
Features & Benefits
FEATURES BENEFITS
Excellent short-circuit protection Improve safety through faster response to fault currents
Dual-element design Provides advanced short circuit and overload protection
Current limiting Restricts fault currents to provide a high degree of circuit protection.
Visual Blown Fuse Indication Indication window turns black allowing fast and easy identification of
the fuse that needs replacement.
CLASS RK5 – FLSR_ID SERIES INDICATOR® FUSES
1
© 2022 Littelfuse, Inc. 33 Littelfuse.com
UL Class R Fuses
Fuses – UL Class R
Ordering Information
AMPERE RATING CATALOG NUMBER PRODUCT MARKING PACKING QUANTITY ORDERING NUMBER UPC CODE
1
⁄10 FLSR.100ID FLSR 1
⁄10 ID 10 FLSR.100TXID 07945802501
15⁄100 FLSR.150ID FLSR 15⁄100 ID 10 FLSR.150TXID 07945802502
2
⁄10 FLSR.200ID FLSR 2
⁄10 ID 10 FLSR.200TXID 07945802503
1
⁄4 FLSR.250ID FLSR 1
⁄4 ID 10 FLSR.250TXID 07945802504
3
⁄10 FLSR.300ID FLSR 3
⁄10 ID 10 FLSR.300TXID 07945802505
4
⁄10 FLSR.400ID FLSR 4
⁄10 ID 10 FLSR.400TXID 07945802506
1
⁄2 FLSR.500ID FLSR 1
⁄2 ID 10 FLSR.500TXID 07945802507
6
⁄10 FLSR.600ID FLSR 6
⁄10 ID 10 FLSR.600TXID 07945802508
8
⁄10 FLSR.800ID FLSR 8
⁄10 ID 10 FLSR.800TXID 07945802509
1 FLSR001ID FLSR 1ID 10 FLSR001.TXID 07945802510
11
⁄8 FLSR1.12ID FLSR 11
⁄8 ID 10 FLSR1.12TXID 07945802511
11
⁄4 FLSR1.25ID FLSR 11
⁄4 ID 10 FLSR1.25TXID 07945802512
14
⁄10 FLSR01.4ID FLSR 14
⁄10 ID 10 FLSR01.4TXID 07945802513
11
⁄2 FLSR01.5ID FLSR 11
⁄2 ID 10 FLSR01.5TXID 07945802514
16
⁄10 FLSR01.6ID FLSR 16
⁄10 ID 10 FLSR01.6TXID 07945802515
18
⁄10 FLSR01.8ID FLSR 18
⁄10 ID 10 FLSR01.8TXID 07945802516
2 FLSR002ID FLSR 2ID 10 FLSR002.TXID 07945802517
21
⁄4 FLSR2.25ID FLSR 21
⁄4 ID 10 FLSR2.25TXID 07945802518
21
⁄2 FLSR02.5ID FLSR 21
⁄2 ID 10 FLSR02.5TXID 07945802519
28
⁄10 FLSR02.8ID FLSR 28
⁄10 ID 10 FLSR02.8TXID 07945802520
3 FLSR003ID FLSR 3ID 10 FLSR003.TXID 07945802521
32
⁄10 FLSR03.2ID FLSR 32
⁄10 ID 10 FLSR03.2TXID 07945802522
31
⁄2 FLSR03.5ID FLSR 31
⁄2 ID 10 FLSR03.5TXID 07945802523
4 FLSR004ID FLSR 4ID 10 FLSR004.TXID 07945802524
41
⁄2 FLSR04.5ID FLSR 41
⁄2 ID 10 FLSR04.5TXID 07945802525
5 FLSR005ID FLSR 5ID 10 FLSR005.TXID 07945802526
56
⁄10 FLSR05.6ID FLSR 56
⁄10 ID 10 FLSR05.6TXID 07945802527
6 FLSR006ID FLSR 6ID 10 FLSR006.TXID 07945802528
61
⁄4 FLSR6.25ID FLSR 61
⁄4 ID 10 FLSR6.25TXID 07945802529
7 FLSR007ID FLSR 7ID 10 FLSR007.TXID 07945802530
71
⁄2 FLSR07.5ID FLSR 71
⁄2 ID 10 FLSR07.5TXID 07945802531
Certification & Compliance
UL UL Listed (File: E81895)
CSA CSA Certified (File: LR29862)
Accessories
LFR60 series fuse holder
CLASS RK5 – FLSR_ID SERIES INDICATOR® FUSES
1
Littelfuse.com 34 © 2022 Littelfuse, Inc.
UL Class R Fuses
Fuses – UL Class R
Ordering Information (cont.)
AMPERE RATING CATALOG NUMBER PRODUCT MARKING PACKING QUANTITY ORDERING NUMBER UPC CODE
8 FLSR008ID FLSR 8ID 10 FLSR008.TXID 07945802532
9 FLSR009ID FLSR 9ID 10 FLSR009.TXID 07945802533
10 FLSR010ID FLSR 10ID 10 FLSR010.TXID 07945802534
12 FLSR012ID FLSR 12ID 10 FLSR012.TXID 07945802535
15 FLSR015ID FLSR 15ID 10 FLSR015.TXID 07945802536
171
⁄2 FLSR17.5ID FLSR 171
⁄2 ID 10 FLSR17.5TXID 07945802537
20 FLSR020ID FLSR 20ID 10 FLSR020.TXID 07945802538
25 FLSR025ID FLSR 25ID 10 FLSR025.TXID 07945802539
30 FLSR030ID FLSR 30ID 10 FLSR030.TXID 07945802540
35 FLSR035ID FLSR 35ID 10 FLSR035.TXID 07945802541
40 FLSR040ID FLSR 40ID 10 FLSR040.TXID 07945802542
45 FLSR045ID FLSR 45ID 10 FLSR045.TXID 07945802543
50 FLSR050ID FLSR 50ID 10 FLSR050.TXID 07945802544
60 FLSR060ID FLSR 60ID 10 FLSR060.TXID 07945802545
70 FLSR070ID FLSR 70ID 5 FLSR070.VXID 07945802546
75 FLSR075ID FLSR 75ID 5 FLSR075.VXID 07945802547
80 FLSR080ID FLSR 80ID 5 FLSR080.VXID 07945802548
90 FLSR090ID FLSR 90ID 5 FLSR090.VXID 07945802549
100 FLSR100ID FLSR 100ID 5 FLSR100.VXID 07945802550
110 FLSR110ID FLSR 110ID 1 FLSR110.XXID 07945802551
125 FLSR125ID FLSR 125ID 1 FLSR125.XXID 07945802552
150 FLSR150ID FLSR 150ID 1 FLSR150.XXID 07945802553
175 FLSR175ID FLSR 175ID 1 FLSR175.XXID 07945802554
200 FLSR200ID FLSR 200ID 1 FLSR200.XXID 07945802555
225 FLSR225ID FLSR 225ID 1 FLSR225.XXID 07945802556
250 FLSR250ID FLSR 250ID 1 FLSR250.XXID 07945802557
300 FLSR300ID FLSR 300ID 1 FLSR300.XXID 07945802558
350 FLSR350ID FLSR 350ID 1 FLSR350.XXID 07945802559
400 FLSR400ID FLSR 400ID 1 FLSR400.XXID 07945802560
450 FLSR450ID FLSR 450ID 1 FLSR450.XXID 07945802561
500 FLSR500ID FLSR 500ID 1 FLSR500.XXID 07945802562
600 FLSR600ID FLSR 600ID 1 FLSR600.XXID 07945802563
CLASS RK5 – FLSR_ID SERIES INDICATOR® FUSES
1
© 2022 Littelfuse, Inc. 35 Littelfuse.com
UL Class R Fuses
Fuses – UL Class R
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
1 OL for DatashLittelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
GFINISH GOmyork 8/30/2021
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATIOOF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SSCALE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
1 8/30/21 DRAWING CREATED MRY
A
B
C
D
E
F
G
A
B
C
D
E
F
H J
K
FIG. 1 FIG. 2
AMPS FIGURE
NUMBER
DIMENSIONS INCHES (MM)
A B C D E F G H J K
1
⁄10–30 1 5
(127.0)
0.76
(19.2)
0.63
(15.9)
0.81
(20.7)
0.09
(2.4)
0.19
(4.7)
0.61
(15.5) - - -
35–60 1 5.50
(139.7)
1
(25.1)
0.63
(15.9)
1.06
(27.0)
0.09
(2.4)
0.25
(6.4)
0.88
(22.2) - - -
70–100 2 7.88
(200.0)
1.24
(31.5)
1.06
(27.0)
1.28
(32.6)
0.13
(3.2)
0.75
(19.1) - 0.25
(6.4)
0.28
(7.1)
0.50
(12.7)
110–200 2 9.63
(244.5)
1.74
(44.2)
1.47
(37.3)
1.79
(45.4)
0.19
(4.8)
1.13
(28.6) - 0.44
(11.1)
0.28
(7.1)
0.69
(17.5)
225–400 2 11.63
(295.3)
2.50
(63.1)
2
(50.8)
2.54
(64.6)
0.25
(6.4)
1.63
(41.3) - 0.63
(15.9)
0.41
(10.3)
0.95
(24.0)
450–600 2 13.38
(339.7)
3
(76.0)
2.41
(61.1)
3.04
(77.3)
0.25
(6.5)
2
(50.8) - 0.75
(19.1)
0.53
(13.5)
1.13
(28.6)
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
30 A 60 A 100 A 200 A 400 A 600 A
5,000 1,250 2,100 3,200 5,000 5,000 5,000
10,000 1,600 2,850 4,300 7,250 10,000 10,000
15,000 1,800 3,400 5,000 8,500 13,500 15,000
20,000 2,250 3,800 5,500 9,500 15,750 19,000
25,000 2,450 4,100 5,700 10,250 17,000 21,000
30,000 2,700 4,500 6,400 10,750 18,000 23,000
35,000 2,900 4,800 6,700 11,500 19,000 24,250
40,000 3,000 5,000 7,250 12,000 19,500 27,000
50,000 3,400 5,250 7,750 13,000 21,000 29,000
60,000 3,600 5,750 8,100 14,000 22,000 30,500
80,000 3,900 6,250 9,000 15,000 24,000 33,000
100,000 4,300 6,750 9,750 16,500 26,000 35,000
150,000 4,500 7,600 11,100 19,000 28,000 38,000
200,000 4,600 8,400 12,250 21,500 30,000 40,000
Current-Limiting Effects of FLSR_ID Fuses
Dimensions
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
CLASS RK5 – FLSR_ID SERIES INDICATOR® FUSES
1
Littelfuse.com 36 © 2022 Littelfuse, Inc.
UL Class K5 Fuses
Fuses – UL Class K5
CLASS K5 - NLN / NLS SERIES (ONE-TIME) FUSES
250/600 Vac • “One-Time” • 1–600 A
Description
NLN/NLS fuses provide low cost protection for general
purpose feeder and branch circuits when available short
circuit currents are less than 50 kA.
Applications
• General purpose residential and commercial circuits with
little or no motor load.
Features/Benefits
• Economical
• 50 kA interrupting rating
• Indicating and DIN mount holders available
Dimensions
Specifications
Voltage Ratings Ac: 250 V (NLN)
600 V (NLS)
Dc: 250 V (NLN)
400 V (NLS 35–60 A)
500 V (NLS 8–30 A) (NLS 225–600 A)
600 V (NLS 1–7 A) (NLS 70–200 A)
Interrupting Ratings Ac: 50 kA rms symmetrical (NLN/NLS)
Dc: 20 kA (NLN/NLS 1–60 A)
50 kA (NLN/NLS 70–600 A)
Ampere Range 1–600 A (NLN/NLS)
Approvals NLN/NLS: Standard 248-9, Class K5
UL Listed (File: E81895)
CSA Certified (File: LR29862)
Ordering Information
AMPERE RATINGS
1 7 25 *60 125 300
2 8 30 70 150 350
3 10 35 80 175 400
4 12 40 90 200 450
5 15 45 100 225 500
6 20 50 110 250 600
VOLTAGE SERIES AMP CATALOG NUMBER ORDERING NUMBER
600 NLS 20 NLS020 0NLS020.T
250 NLN 15 NLN015 0NLN015.T
Web Resources
Download TC Curves, CAD drawings and other technical
information: littelfuse.com/nln
littelfuse.com/nls
Recommended Fuse Blocks
LFH Series......................................................................... 94
A
C D C
A E
B B F D G
FIG. 1 FIG. 2
AMPERES REFER TO
FIG. NO. SERIES DIMENSIONS INCHES (mm)
A B C D E F G
1–30 1 NLN 2 (50.8) 1
⁄2 (12.7) 1
⁄2 (12.7) 9
⁄16 (14.3) — — —
NLS 5 (127.0) 3
⁄4 (19.1) 5
⁄8 (15.9) 13⁄16 (20.6) — — —
35–60 1 NLN 3 (76.2) 3
⁄4 (19.1) 5
⁄8 (15.9) 13⁄16 (20.6) — — —
NLS 51
⁄2 (139.7) 1 (25.4) 5
⁄8 (15.9) 11
⁄16 (27.0) — — —
70– 00 2 NLN 57
⁄8 (149.2) 1 (25.4) 1 (25.4) 11
⁄16 (27.0) 1
⁄8 (3.2) 3
⁄4 (19.1) 15
⁄16 (33.3)
NLS 77
⁄8 (200.0) 11
⁄4 (31.8) 1 (25.4) 15
⁄16 (33.3) 1
⁄8 (3.2) 3
⁄4 (19.1) 19
⁄16 (39.7)
110–200 2 NLN 71
⁄8 (181.0) 11
⁄2 (38.1) 13
⁄8 (34.9) 19
⁄16 (39.7) 3
⁄16 (4.8) 11
⁄8 (28.6) 17
⁄8 (47.6)
NLS 95
⁄8 (244.5) 13
⁄4 (44.5) 13
⁄8 (34.9) 127⁄32 (46.8) 3
⁄16 (4.8) 11
⁄8 (28.6) 23
⁄32 (53.2)
225–400 2 NLN 85
⁄8 (219.1) 2 (50.8) 17
⁄8 (47.6) 23
⁄32 (53.2) 1
⁄4 (6.4) 15
⁄8 (41.3) 213⁄32 (61.1)
NLS 115
⁄8 (295.3) 21
⁄2 (63.5) 17
⁄8 (47.6) 219⁄32 (65.9) 1
⁄4 (6.4) 15
⁄8 (41.3) 27
⁄8 (73.0)
450–600 2 NLN 103
⁄8 (263.5) 21
⁄2 (63.5) 21
⁄4 (57.2) 219⁄32 (65.9) 1
⁄4 (6.4) 2 (50.8) 27
⁄8 (73.0)
NLS 13 3
⁄8 (339.7) 3 (76.2) 21
⁄4 (57.2) 33
⁄32 (78.6) 1
⁄4 (6.4) 2 (50.8) 37
⁄16 (87.3)
1
© 2022 Littelfuse, Inc. 37 Littelfuse.com
UL Class J Fuses
Fuses – UL Class J
Web Resources
Download TC Curves, CAD drawings and other technical
information: littelfuse.com/jtd
Recommended Fuse Holders
LFJ60 Series ...................................................................... 91
LFPSJ Series (8
⁄10 –60 A).......................................................118
Dimensions
Please refer to the Class J dimensions ............................. 23
CLASS J - JTD SERIES INDICATOR® POWR-PRO® FUSES
600 Vac • Time Delay • 8/10–600 A
AMPERAGE RATINGS 8
⁄10 21
⁄4 41
⁄2 10 35 90 225 600
1 21
⁄2 5 12 40 100 250 –
11
⁄4 2 8
⁄10 5 6
⁄10 15 45 110 300 –
11
⁄2 3 6 171
⁄2 50 125 350 –
16
⁄10 32 ⁄10 7 20 60 150 400 –
18
⁄10 31
⁄2 8 25 70 175 450 –
2 4 9 30 80 200 500 –
Description
The Littelfuse POWR-PRO® JTD_ID Indicator Class J fuse
provides visual blown fuse indication and maximum protection
in a compact package. The current-limiting time delay JTD_ID
offers a patented design which reduces nuisance fuse
openings.
Features/Benefits
• POWR-PRO® Performance
• Current-Limiting
• IEC Type 2 Protection
• Indication and non-indication version available
• Indicating and DIN mount holders available
Applications
• Fused combination motor controllers and motor
control centers
• Transformer protection
• Protection for series rated molded case
circuit-breaker panels
• General purpose circuits
Specifications
Voltage Ratings Ac: 600 V
Dc: 300 V (8
⁄10 –100 A)
500 V (110–600 A)
Amperage Range 8
⁄10–600 A
Interrupting Rating Ac: 200 kA rms symmetrical
300kA rms symmetrical
(Littelfuse self-certified)
Dc: 20 kA
Material Body: Melamine
Caps: Nickel-plated Bronze (8
⁄10–60 A)
Brass (70–200 A)
Brass Cap with Copper Blade (225–600 A)
Approvals Ac: Standard 248-8, Class J
UL Listed (File: E81895)
CSA Certified (File: LR29862)
Dc: Littelfuse self-certified
Country of Origin Mexico
TYPE SERIES AMPERAGE CATALOG
NUMBER
ORDERING
NUMBER
INDICATING JTD_ID 60 JTD60ID 0JTD060.TXID
NON-INDICATING JTD 60 JTD60 0JTD060.T
100,000
90,000
80,000
70,000
60,000
50,000
40,000
30,000
20,000
10,000
9,000
8,000
7,000
6,000
5,000
4,000
3,000
2,000
100,000
90,000
80,000
70,000
60,000
50,000
40,000
30,000
20,000
10,000
9,000
8,000
7,000
6,000
5,000
4,000
3,000
2,000
100
200
300
400
500
600
700
800
900
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
200,000
PEAK LET- THRU IN AMPERES
600A -
400A -
200A -
100A -
60A -
30A -
1,000
900
800
700
600
500
400
300
200
100
1,000
900
800
700
600
500
400
300
200
100
100,000
200,000
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
100
200
300
400
500
600
700
800
900
AVAILABLE FAULT CURRENT
SYMMETRICAL R.M.S. AMPERES
BASIS FOR DATA:
TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER:
DRAWN BY:
DATE:
REVISION:
DRAWING NO.: SHEET PEAK LET‐THRU CHARACTERISTIC CURVES
LITTELFUSE, INC. CHICAGO, IL. USA
LLL
03/15/2016
A
2 OF 2
FCC05-JTD
JTD & JTDID 30A - 600A
Peak Let-Thru Curve
Ordering Information
1
Littelfuse.com 38 © 2022 Littelfuse, Inc.
UL Class J Fuses
Fuses – UL Class J
Dimensions
Please refer to the Class J dimensions ............................. 23
CLASS J – JLS SERIES FUSES
600 VAC • Fast-Acting • 1-600 A
AMPERE RATINGS
1 20 45 90 175 350
3 25 50 100 200 400
6 30 60 110 225 450
10 35 70 125 250 500 Description 15 40 80 150 300 600
The UL Listed Class J JLS Series fuses provide space
saving, fast-acting overload and short-circuit protection for
vital industrial and power conversion applications.
Littelfuse’s JLS Series fuses offer best in class current
limitation that prevents equipment damage from overcurrent
faults.
Features and Benefits
• Superior performance in a space saving package
• Reliable interruption of all overcurrents with protection
up to 200kA
• Extremely current limiting
• Fast-acting protection for surge-sensitive devices and
components
• Reduces heating and magnetic effects due to
overcurrents, extending equipment life
• Economical and readily available
Applications
• Power conversion device protection
• Variable speed drives
• Rectifiers
• Resistive loads
• Solid-state devices
10000
100000
200000
100
1000
100
1000
10000
100000
1000000
600 A
400 A
200 A
100 A
60 A
30 A
PEAK LET-THRU IN AMPERES
AVAILABLE FAULT CURRENT
SYMMETRICAL R. M. S. AMPERES
05567005
TYPE SERIES AMPERAGE CATALOG
NUMBER
ORDERING
NUMBER
NON-INDICATING JLS 110 JLS110 0JLS110.X
Ordering Information
Web Resources
Download TC curves, CAD drawings and other technical
information: littelfuse.com/jls
Recommended Fuse Holders
LFJ60 Series ...................................................................... 91
LFPSJ Series (8
⁄10 –60 A).......................................................118
QPL
JLS
Peak Let-Thru Curve
Specifications
Voltage Ratings 600 VAC
Interrupting Ratings 200 kA rms symmetrical
Ampere Range 1–600 A
Approvals Standard 248-8, Class J
UL Listed (File: E81895)
CSA Certified (File: LR29862)
Federal Specification WF-1814
(QPL-W-F-1814)
1
© 2022 Littelfuse, Inc. 39 Littelfuse.com
UL Class J Fuses
Fuses – UL Class J Fuses – UL Class J
CLASS J DIMENSIONS AND CURRENT-LIMITING EFFECTS
A
C
D
G F
E
A H
B
C
D
Fig. 1 Fig. 2
Dimensions Inches (mm)
Current-Limiting Effects of JTD_ID (600 V) Fuses
SHORT CIRCUIT
CURRENT†
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
15 A 30 A 60 A 100 A 200 A 400 A 600 A
5,000 565 750 1,500 1,800 2,800 4,800 5,000
10,000 675 925 1,900 2,450 3,600 5,700 7,750
15,000 775 1,050 2,100 2,800 4,100 6,500 9,000
20,000 825 1,125 2,300 3,000 4,400 7,250 9,700
25,000 900 1,200 2,500 3,300 5,000 8,000 10,500
30,000 950 1,300 2,600 3,500 5,100 8,400 11,000
35,000 1,000 1,350 2,700 3,700 5,400 9,000 12,000
40,000 1,050 1,400 2,800 3,900 5,600 9,200 12,500
50,000 1,100 1,500 3,000 4,200 6,000 10,000 13,000
60,000 1,200 1,600 3,200 4,500 6,400 10,500 14,000
80,000 1,300 1,700 3,400 4,900 7,200 11,200 15,500
100,000 1,375 1,800 3,600 5,200 7,800 12,200 16,500
150,000 1,500 2,000 3,950 6,000 9,000 14,500 19,000
200,000 1,600 2,175 4,000 6,500 10,000 16,000 20,500
†Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data derived from Peak Let-Thru Curves
*70-100 A JLS dimension = 1 (25.4)
AMPERES FIGURE
NUMBER
DIMENSIONS INCHES (mm)
A B C D E F G H
1 – 30 1 21
⁄4 (57.2) — 1
⁄2 (12.7) 13⁄16 (20.6) — — — —
35 – 60 1 23
⁄8 (60.3) — 5
⁄8 (15.9) 11
⁄16 (27.0) — — — —
70 – 100 2 25
⁄8 (66.7) 317⁄32 (89.7) 323⁄32 (94.5) 45
⁄8 (117.5) 11
⁄8 (28.6)* 3
⁄4 (19.1) 9
⁄32 (7.1) 1
⁄8 (3.2)
110 – 200 2 3 (76.2) 49
⁄32 (108.7) 415⁄32 (113.5) 53
⁄4 (146.1) 11
⁄2 (38.1) 11
⁄8 (28.6) 9
⁄32 (7.1) 3
⁄16 (4.8)
225 – 400 2 33
⁄8 (85.7) 51
⁄8 (130.2) 53
⁄8 (136.5) 71
⁄8 (181.0) 2 (50.8) 15
⁄8 (41.3) 13⁄32 (10.3) 1
⁄4 (6.4)
450 – 600 2 33
⁄4 (95.3) 527⁄32 (148.4) 65
⁄32 (156.4) 8 (203.2) 21
⁄2 (63.5) 2 (50.8) 17⁄32 (13.5) 3
⁄8 (9.5)
Dimensions of JTD_ID, JTD and JLS
1
Littelfuse.com 40 © 2022 Littelfuse, Inc.
UL Class T Fuses
Fuses – UL Class T
CLASS T - JLLN / JLLS SERIES FUSES
300/600 V ac • Fast-Acting • 1–1200 A
Description
JLLN / JLLS series fuses are less than 1/3 the size of
comparable Class R fuses and are typically used for short
circuit protection of drives and surge sensitive components.
When rated in accordance with the NEC*, JLLN / JLLS
fuses provide fast-acting overload and short circuit
protection for non-inductive circuits and equipment.
Features/Benefits
Extremely current-limiting
Compact design
200 kA interrupting rating JLLN 35–60 amperes available with PCB mounts
Applications
Variable speed drive protection Power conversion devices (inverters, rectifiers, UPS) Power supplies and power distribution units Compact mains switches
Recommended Fuse Holders
LFT30 series
LFT60 series
LSCR series for 70–800 amperes
Web Resources
Download TC curves, CAD drawings and other technical
information: Littelfuse.com/jlln
Littelfuse.com/jlls AMPERE RATINGS
1 25 70 175 450 1100
2 30 80 200 500 1200
3 35 90 225 600
6 40 100 250 700
10 45 110 300 800
15 50 125 350 900*
20 60 150 400 1000
*JLLS only
Ordering Information
SERIES AMP PACK
SIZE
PLATING
SUFFIX
MOUNT
SUFFIX
CATALOG
NUMBER
ORDERING
NUMBER
JLLS 6 T – – JLLS006 JLLS006.T
JLLN 35 T – XL† JLLN035L JLLN035.TXL
JLLN 40 T – XLSE† JLLN040LSE JLLN040.TXLSE
JLLN 100 V XP – JLLN100P JLLN100.VXP †
Option is available for JLLN 35–60 amperes only. Premium plating is standard
Specifications
JLLN
Voltage Ratings Ac: 300 V
Dc: 160 V (1–60 A)
125 V (70–1200 A)
Ampere Range 1–1200 A
Interrupting Ratings Ac: 200 kA rms symmetrical
Dc: 50 kA (1–30 A)
20 kA (35–1200 A)
Approvals Ac: UL Standard 248-15, Class T
UL Listed (File: E81895): 1–1200 A
CSA Certified (File: LR29862): 1–600 A
Dc: UL Listed (File: E81895): 1–1200 A
Material 1-30 A: melamine body, bronze caps
35–1200 A: melamine body, copper caps
Environmental RoHS compliant
JLLS
Voltage Ratings Ac: 600 V
Dc: 300 V
Ampere Range 1–1200 A
Interrupting Ratings Ac: 200 kA rms symmetrical
Dc: 20 kA
Approvals Ac: UL Standard 248-15, Class T
UL Listed (File: E81895): 1–1200 A
CSA Certified (File: LR29862): 1– 600 A
Dc: Littelfuse self-certified
Material 1–30 A: melamine body, copper caps
35–60 A: melamine body, bronze caps
70–1200 A: melamine body, copper caps
Environmental RoHS compliant
Part Numbering System
JLLN xxxx V —
Package Quantity
Series Options
Amperage
T = 10 (1–60 A)
V = 5 (70–100 A)
X = 1 (110–1200 A)
Blank = Standard Non-Plated
XP = Premium Plated
XL = Leaded†
XV = Vertical Mount†
XLS = Solder Lead†
XLSE = Solder Lead Extended
*NEC is a trademark of it’s respective owner.
1
© 2022 Littelfuse, Inc. 41 Littelfuse.com
UL Class T Fuses
Fuses – UL Class T Fuses – UL Class T
CLASS T - JLLN / JLLS SERIES FUSES
B
C
A
F
D F
E
A
B
C
D
G
A
C
D
Fig. 1 Fig. 2 Fig. 3
AMPERES REFER TO
FIG. NO. SERIES DIMENSIONS INCHES (mm)
A B C D E F G
1–30 1
JLLN .875 (22.2) — .281 (7.1) .406 (10.3) — — —
JLLS 1.500 (38.1) — .281 (7.1) .562 (14.3) — — —
35–60
1 JLLN .875 (22.2) — .281 (7.1) .562 (14.3) — — —
2 JLLS 1.562 (39.7) .812 (20.6) .406 (10.3) .994 (25.2) .062 (1.6) 1.094 (27.8) —
70–100 3
JLLN 2.156 (54.8) 1.562 (39.7) .750 (19.1) .812 (20.6) .830 (21.1) .281 (7.1) .125 (3.2)
JLLS 2.953 (75.0) 2.352 (59.7) .750 (19.1) .828 (21.0) 1.625 (41.3) .281 (7.1) .125 (3.2)
110–200 3
JLLN 2.437 (61.9) 1.687 (42.9) .875 (22.2) 1.062 (27.0) .830 (21.1) .343 (8.7) .187 (4.8)
JLLS 3.250 (82.6) 2.507 (63.7) .875 (22.2) 1.078 (27.4) 1.656 (42.1) .343 (8.7) .187 (4.8)
225–400 3
JLLN 2.750 (69.9) 1.843 (46.8) 1.000 (25.4) 1.312 (33.3) .828 (21.0) .406 (10.3) .250 (6.4)
JLLS 3.625 (92.1) 2.718 (69.1) 1.000 (25.4) 1.593 (40.5) 1.712 (43.5) .406 (10.3) .250 (6.4)
450–600 3
JLLN 3.062 (77.8) 2.031 (51.6) 1.250 (31.8) 1.593 (40.5) .875 (22.2) .484 (12.3) .312 (7.9)
JLLS 3.984 (101.2) 2.953 (75.0) 1.250 (31.8) 2.062 (52.4) 1.765 (44.8) .484 (12.3) .312 (7.9)
700–800 3
JLLN 3.375 (85.7) 2.218 (56.4) 1.750 (44.5) 2.062 (52.4) .875 (22.2) .546 (13.9) .375 (9.5)
JLLS 4.328 (109.9) 3.171 (80.6) 1.750 (44.5) 2.500 (63.5) 1.860 (47.2) .546 (13.9) .375 (9.5)
900–1200 3
JLLN 4.000 (101.6) 2.531 (64.3) 2.000 (50.8) 2.500 (63.5) 1.033 (26.2) .609 (15.5) .437 (11.1)
JLLS 5.271 (133.9) 3.801 (96.5) 2.000 (50.8) 2.625 (66.7) 2.303 (58.5) .609 (15.5) .437 (11.1)
Dimensions
Inches (mm)
1
Littelfuse.com 42 © 2022 Littelfuse, Inc.
UL Class G Fuses
Fuses – UL Class G
CLASS G - SLC CLASS G FUSES
480/600 VAC • Time-Delay • 1/2-60 A
Web Resources
Download TC Curves, CAD drawings and other technical
information: littelfuse.com/slc
Recommended Fuse Holders
LFG60 Series (1-20 A)...................................................... 105
LFG48 Series (25-60 A).................................................... 105
A
B
C D
AMP DIMENSIONS INCHES (mm )
A B C D
1/2 – 15 1 5/16 (33.3) 3/8 (9.5) 9/32 (7.1) 13/32 (10.3)
20 1 13/32 (35.7) 3/8 (9.5) 9/32 (7.1) 13/32 (10.3)
25, 30 1 5/8 (41.3) 3/8 (9.5) 9/32 (7.1) 13/32 (10.3)
35 – 60 2 1/4 (57.2) 3/8 (9.5) 1/2 (12.7) 13/32 (10.3)
Dimensions
Ordering Information Description
Littelfuse SLC fuses provide cost effective branch circuit
protection. Fuse length varies to prevent over-fusing.
Compact Class G fuses were the first fuse series to
approach midget fuse dimensions and meet NEC®
requirements for branch-circuit protection.
Features/Benefits
• Branch circuit rated
• Current-limiting
• 100 kA interrupting rating
• 600 VAC rated 1/2-20 A
Applications
• Branch circuit protection
QPL
Ferrule Version
SERIES AMP PACKAGE
QUANTITY
CATALOG
NUMBER
ORDERING
NUMBER
SLC 2 10 SLC002 0SLC002.T
Part Numbering System
0SLC xxxx H
Package Quantity
Series
Amp Code
Refer to Amp Code T = 10
Column in Electrical
Specifications Table
Specifications
Voltage Ratings 600 VAC (1/2 – 20 A)
480 VAC (25 – 60 A)
170 VDC (1/2 – 60 A) (Littelfuse self-certified)
Interrupting Ratings AC: 100 kA rms symmetrical
DC: 10 kA
Ampere Range 1/2 – 60 A
Approvals Standard 248-5, Class G
UL Listed (File: E81895)
CSA Certified (File: LR29862)
Federal Specification WF-1814
(QPL-W-F-1814)
Environmental RoHS Compliant
1
© 2022 Littelfuse, Inc. 43 Littelfuse.com
UL Class CC/CD Fuses
Fuses – UL Class CC/CD
CLASS CC/CD - CCMR SERIES POWR-PRO® FUSES
Description
The CCMR series is ideal for space saving protection
of motors up to 40 hp*. It was designed specifically to
withstand sustained starting currents of small motors. The
CCMR 60 fuse is the smallest 60 A fuse available rated at
600 V. Compared to other UL Listed fuses, Class CC fuses
are the most current-limiting, rating for rating.
Features/Benefits
POWR-PRO® Performance
Extremely current-limiting
Ratings up to 60 Amps
300 kA Interrupting Rating (self-certified)
Applications
Motor and motor branch circuit protection
Ordering Part Number
CCMR XXX T -
Amp Code
Refer to Amp Code
column in electrical
specifications table
Series
Packing Quantity
T = 10
H = 100
600 V ac • Dual Element • Time-Delay • 2/10–60 A
Specifications
Voltage Rating Ac: 600 V
Dc: 250 V (CCMR 35– 60 A)
300 V (CCMR 2/10– 10 A)
500 V (CCMR 12– 30 A)
Amperage Rating 2/10 – 60 A
Interrupting Rating Ac: 200 kA rms symmetrical
300 kA Littelfuse self-certified
Dc: 20 kA
Approvals Ac: Standard 248-4, Class CC
UL Listed 2/10-30 A (File: E81895)
Standard 248-18, Class CD
UL Listed 35-60 A (File: E81895)
CSA Certified (File: LR29862)
Dc: Littelfuse self-certified
Environmental RoHS Compliant (except 35-60 A)
Country of Origin Mexico
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: Littelfuse.com/ccmr
Recommended Fuse Holders
LFC600 Series (35–60 A Only)
L60030C Series (2/10–30A Only)
LPSC /LFPSC Touch-Safe Series (2/10–30A Only)
571/572 Panel Mount Series (2/10–30A Only)
Options
Blank = Non RoHS
(35–60 A)
XP = RoHS (0.2–30 A)
Dimensions Inches (mm)
1.880
(47.8)
.850
(21.6)
1.50
(38.1)
.50
(12.7)
.41
(10.3)
.25
(6.4)
.125
(3.2)
0-30 A 35-60 A
*Consult Motor Protection Tables on www.littelfuse.com or call 800-TEC-FUSE for specific motor sizing information.
1
Littelfuse.com 44 © 2022 Littelfuse, Inc.
UL Class CC/CD Fuses
Fuses – UL Class CC/CD
Ordering Information
AMPERE AMPERE CODE CATALOG NUMBER PRODUCT MARKING PACK QUANTITY ORDERING NUMBER UPC
0.2 .200 CCMR.200 CCMR 2/10A 10 CCMR.200TXP 07945896805
100 CCMR.200HXP 07945896841
0.25 .250 CCMR.250 CCMR 1/4A 10 CCMR.250TXP 07945896806
100 CCMR.250HXP 07945896842
0.3 .300 CCMR.300 CCMR 3/10A 10 CCMR.300TXP 07945896807
100 CCMR.300HXP 07945896843
0.5 .500 CCMR.500 CCMR 1/2A 10 CCMR.500TXP 07945896808
100 CCMR.500HXP 07945896844
0.6 .600 CCMR.600 CCMR 6/10A 10 CCMR.600TXP 07945896809
100 CCMR.600HXP 07945896845
0.8 .800 CCMR.800 CCMR 8/10A 10 CCMR.800TXP 07945896810
100 CCMR.800HXP 07945896846
1 001 CCMR001 CCMR 1A 10 CCMR001.TXP 07945896811
100 CCMR001.HXP 07945896847
1.25 1.25 CCMR1.25 CCMR 1-1/4A 10 CCMR1.25TXP 07945896812
100 CCMR1.25HXP 07945896848
1.4 01.4 CCMR01.4 CCMR 1-4/10A 10 CCMR01.4TXP 07945896813
100 CCMR01.4HXP 07945896849
1.5 01.5 CCMR01.5 CCMR 1-1/2A 10 CCMR01.5TXP 07945896814
100 CCMR01.5HXP 07945896850
1.6 01.6 CCMR01.6 CCMR 1-6/10A 10 CCMR01.6TXP 07945896815
100 CCMR01.6HXP 07945896851
1.8 01.8 CCMR01.8 CCMR 1-8/10A 10 CCMR01.8TXP 07945896816
100 CCMR01.8HXP 07945896852
2 002 CCMR002 CCMR 2A 10 CCMR002.TXP 07945896817
100 CCMR002.HXP 07945896853
2.25 2.25 CCMR2.25 CCMR 2-1/4A 10 CCMR2.25TXP 07945896818
100 CCMR2.25HXP 07945896854
2.8 02.8 CCMR02.8 CCMR 2-8/10A 10 CCMR02.8TXP 07945896820
100 CCMR02.8HXP 07945896856
3 003 CCMR003 CCMR 3A 10 CCMR003.TXP 07945896821
100 CCMR003.HXP 07945896857
3.2 03.2 CCMR03.2 CCMR 3-2/10A 10 CCMR03.2TXP 07945896822
100 CCMR03.2HXP 07945896858
3.5 03.5 CCMR03.5 CCMR 3-1/2A 10 CCMR03.5TXP 07945896823
100 CCMR03.5HXP 07945896859
4 004 CCMR004 CCMR 4A 10 CCMR004.TXP 07945896824
100 CCMR004.HXP 07945896860
4.5 04.5 CCMR04.5 CCMR 4-1/2A 10 CCMR04.5TXP 7945896825
100 CCMR04.5HXP 7945896861
5 005 CCMR005 CCMR 5A 10 CCMR005.TXP 07945896826
100 CCMR005.HXP 07945896862
5.6 05.6 CCMR05.6 CCMR 5-6/10A 10 CCMR05.6TXP 07945896827
100 CCMR05.6HXP 07945896863
6 006 CCMR006 CCMR 6A 10 CCMR006.TXP 07945896828
100 CCMR006.HXP 07945896864
6.25 6.25 CCMR6.25 CCMR 6-1/4A 10 CCMR6.25TXP 07945896829
100 CCMR6.25HXP 07945896865
7 007 CCMR007 CCMR 7A 10 CCMR007.TXP 07945896830
100 CCMR007.HXP 07945896866
7.5 07.5 CCMR07.5 CCMR 7-1/2A 10 CCMR07.5TXP 07945896831
100 CCMR07.5HXP 07945896867
8 008 CCMR008 CCMR 8A 10 CCMR008.TXP 07945896832
100 CCMR008.HXP 07945896868
9 009 CCMR009 CCMR 9A 10 CCMR009.TXP 07945896833
100 CCMR009.HXP 07945896869
10 010 CCMR010 CCMR 10A 10 CCMR010.TXP 07945896834
100 CCMR010.HXP 07945896870
CLASS CC/CD - CCMR SERIES POWR-PRO® FUSES
1
© 2022 Littelfuse, Inc. 45 Littelfuse.com
UL Class CC/CD Fuses
Fuses – UL Class CC/CD
Ordering Information
AMPERE AMPERE CODE CATALOG NUMBER PRODUCT MARKING PACK QUANTITY ORDERING NUMBER UPC
12 012 CCMR012 CCMR 12A 10 CCMR012.TXP 07945896835
100 CCMR012.HXP 07945896871
15 015 CCMR015 CCMR 15A 10 CCMR015.TXP 07945896836
100 CCMR015.HXP 07945896872
17.5 17.5 CCMR17.5 CCMR 17-1/2A 10 CCMR17.5TXP 07945896837
100 CCMR17.5HXP 07945896873
20 020 CCMR020 CCMR 20A 10 CCMR020.TXP 07945896838
100 CCMR020.HXP 07945896874
25 025 CCMR025 CCMR 25A 10 CCMR025.TXP 07945896839
100 CCMR025.HXP 07945896875
30 030 CCMR030 CCMR 30A 10 CCMR030.TXP 07945896840
100 CCMR030.HXP 07945896876
35 035 CCMR035 CCMR 35 10 CCMR035.T 07945801706
40 040 CCMR040 CCMR 40 10 CCMR040.T 07945801707
45 045 CCMR045 CCMR 45 10 CCMR045.T 07945801708
50 050 CCMR050 CCMR 50 10 CCMR050.T 07945801709
60 060 CCMR060 CCMR 60 10 CCMR060.T 07945801710
Electrical Specifications
AMPERAGE RATING
VOLTAGE
RATING INTERRUPTING RATING WATTS LOSS
AT 100% RATED
CURRENT (W)
WATTS LOSS
AT 80% RATED
CURRENT (W)
TOTAL CLEARING
I
2
T (A2 SEC) 200 kA
AGENCY
APPROVALS
AC DC AC DC UL CSA RoHS
2-1/4 600 300 200 kA 20 kA 1.55 0.99 351 • • •
2-1/2 600 300 200 kA 20 kA 1.99 1.26 192 • • •
3 600 300 200 kA 20 kA 1.55 1.02 286 • • •
4 600 300 200 kA 20 kA 1.62 1.04 1870 • • •
5 600 300 200 kA 20 kA 1.89 1.20 1060 • • •
6-1/4 600 300 200 kA 20 kA 1.72 1.08 797 • • •
7-1/2 600 300 200 kA 20 kA 1.72 1.09 983 • • •
8 600 300 200 kA 20 kA 1.39 0.83 431 • • •
10 600 300 200 kA 20 kA 1.49 0.90 1250 • • •
15 600 500 200 kA 20 kA 1.77 1.03 1120 • • •
20 600 500 200 kA 20 kA 2.3 1.39 918 • • •
30 600 500 200 kA 20 kA 2.75 1.62 1790 • • •
CLASS CC/CD - CCMR SERIES POWR-PRO® FUSES
1
Littelfuse.com 46 © 2022 Littelfuse, Inc.
UL Class CC/CD Fuses
Fuses – UL Class CC/CD
Temperature Rerating Curve (Temperature of Air Immediately Surrounding Fuse)
-60°C -40°C -20°C 0°C 20°C 40°C 60°C 80°C 100°C 120°C 140°C
-76°F -40°F -4°F 32°F 68°F 104°F 140°F 176°F 212°F 248°F 284°F
AMBIENT TEMPERATURE
60
40
20
0
PERCENT OF UPRATING
0
20
40
60
PERCENT OF DOWNRATING
Current-Limiting Effects
SHORT
CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
2.25A 2.5A 3A 4A 5A 6.25A 7.5A 8A 10A 12A 15A 20A 30A 35A 40A 45A 50A 60A
5,000 203 224 287 289 460 472 442 437 359 369 435 355 621 1,170 1,240 1,320 1,070 1,525
10,000 256 282 361 364 580 595 557 551 452 465 548 447 783 1,480 1,565 1,670 1,355 1,930
15,000 293 323 413 416 664 681 637 631 517 532 627 512 896 1,695 1,795 1,915 1,555 2,200
20,000 323 356 455 458 730 750 702 694 569 585 690 563 987 1,870 1,980 2,110 1,710 2,430
25,000 348 383 490 493 787 808 756 748 613 630 743 607 1,063 2,015 2,135 2,275 1,845 2,620
30,000 370 407 521 524 836 858 803 795 651 670 790 645 1,129 2,145 2,270 2,420 1,965 2,780
35,000 389 429 548 552 880 903 845 837 686 705 832 679 1,189 2,260 2,390 2,550 2,070 2,885
40,000 407 448 573 577 920 944 884 875 717 737 870 709 1,243 2,360 2,500 2,665 2,165 3,025
50,000 438 483 617 622 991 1,017 952 942 772 794 937 764 1,339 2,545 2,695 2,875 2,330 3,200
60,000 466 513 656 661 1,053 1,081 1,012 1,001 821 844 995 812 1,423 2,705 2,865 3,055 2,480 3,350
80,000 513 564 722 727 1,159 1,190 1,114 1,102 903 929 1,096 894 1,566 2,985 3,160 3,365 2,730 3,540
100,000 552 608 778 783 1,249 1,282 1,200 1,187 973 1,001 1,180 963 1,687 3,215 3,405 3,630 2,945 3,685
150,000 632 696 890 897 1,430 1,467 1,373 1,359 1,114 1,146 1,351 1,102 1,931 3,685 3,905 4,160 3,375 4,030
200,000 696 766 980 987 1,574 1,615 1,511 1,496 1,226 1,261 1,487 1,213 2,125 4,060 4,300 4,580 3,720 4,230
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
CLASS CC/CD - CCMR SERIES POWR-PRO® FUSES
1
© 2022 Littelfuse, Inc. 47 Littelfuse.com
UL Class CC/CD Fuses
Fuses – UL Class CC/CD
1
Littelfuse.com 48 © 2022 Littelfuse, Inc.
UL Class CC Fuses
Fuses – UL Class CC
Specifications
Voltage Rating Ac: 600 V
Dc: 300 V
Ampere Range 1/10 – 30 A
Interrupting Rating Ac: 200,000 A rms symmetrical
Dc: 20,000 A
Approvals Ac: Standard 248-4, Class CC
UL Listed 1/10-30 A (File: E81895)
CSA Certified 1/10-30 A (File: LR29862)
Dc: Littelfuse self-certified
Material Melamine body
Bronze caps (nickel plated)
Environmental RoHS Compliant
Country of Origin Mexico
CLASS CC - KLDR / KLKR SERIES FUSES
KLKR Series
600 Vac/300 Vdc • Fast-Acting • 1/10-30 A
KLDR Series
600 Vac/300 Vdc • Time-Delay • 1/10-30 A
Description
KLKR Series Class CC fuses are fast-acting
fuses intended for general purpose branch
circuit protection. Their compact size,
fast-acting overload response, and highly
current-limiting design make them ideal for
use in OEM equipment and control panels.
Specifications
Voltage Rating AC: 600 Vac or less
DC: 300 Vdc
Ampere Range 1/10 – 30 A
Interrupting Rating AC: 200 kA rms symmetrical
DC: 20 kA
Approvals AC: Standard 248-4, Class CC
UL Listed 1/10-30 A (File: E81895)
CSA Certified 1/10-30 A (File: LR29862)
DC: Littelfuse self-certified
Material Melamine body
Bronze caps (nickel plated)
Environmental RoHS Compliant
Country of Origin Mexico
AMPERE RATINGS
1/10 6/10 1 8/10 4 1/2 10
1/8 3/4 2 5 12
15/100 8/10 2 1/4 5 6/10 15
3/16 1 2 1/2 6 17 1/2
2/10 1 1/8 2 8/10 6 1/4 20
1/4 1 1/4 3 7 25
3/10 1 4/10 3 2/10 7 1/2 30
4/10 1 1/2 3 1/2 8 —
1/2 1 6/10 4 9 —
AMPERE RATINGS
1/10 1/2 2 1/2 6 12
1/8 3/4 3 7 15
2/10 1 3 1/2 8 20
1/4 1 1/2 4 9 25
3/10 2 5 10 30
Ordering Information
SERIES AMP CATALOG
NUMBER
ORDERING
NUMBER
KLDR 10 KLDR010 KLDR010.TXP
Ordering Information
SERIES AMP CATALOG
NUMBER
ORDERING
NUMBER
KLKR 12 KLKR012 KLKR012.T
Recommended Fuse Holders
L60030C Series ....................................................141
LPSC Touch-Safe Series........................................156
LEC series inline fuse holder................................189
571/572 series panel mount fuse holder..............163
Dimensions
Please refer to the Class CC dimensions............... 30
Recommended Fuse Holders
L60030C Series ....................................................141
LPSC Touch-Safe Series........................................156
Dimensions
Please refer to the Class CC dimensions............... 30
Web Resources
For additional information, visit:
littelfuse.com/klkr
Web Resources
For additional information, visit:
littelfuse.com/kldr
Description
KLDR fuses are time-delay fuses designed
to protect control transformers, solenoids
and similar inductive components with
high magnetizing currents during the first
half-cycle. They provide excellent protection of motor branch circuits containing
IEC or NEMA rated motor controllers or
contactors.
1
© 2022 Littelfuse, Inc. 49 Littelfuse.com
UL Class CC/CD Fuses
Fuses – UL Class CC/CD
1.880
(47.8)
.850
(21.6)
1.50
(38.1)
.50
(12.7)
.41
(10.3)
.25
(6.4)
.125
(3.2)
0-30 A 35-60 A
CLASS CC / CD DIMENSIONS AND CURRENT-LIMITING EFFECTS
Dimensions Inches (mm)
100
1,000
10,000
100,000
1,000,000
100 1,000 10,000 100,000
PEAK LET- THRU IN AMPERES
AVAILABLE FAULT CURRENT
SYMMETRICAL R.M.S. AMPERES
8A -
6A -
4ABASIS FOR DATA:
TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER:
DRAWN BY:
DATE:
REVISION:
LITTELFUSE, INC. CHICAGO, IL. USA
LLL
11/12/12
B
KLDRP 4A - 30A
Peak Let-Thru Curve KLDR Peak Let-Thru Curve KLKR
SHORT
CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
2.25A 2.5A 3A 4A 5A 6.25A 7.5A 8A 10A 12A 15A 20A 30A 35A 40A 45A 50A 60A
5,000 203 224 287 289 460 472 442 437 359 369 435 355 621 1,170 1,240 1,320 1,070 1,525
10,000 256 282 361 364 580 595 557 551 452 465 548 447 783 1,480 1,565 1,670 1,355 1,930
15,000 293 323 413 416 664 681 637 631 517 532 627 512 896 1,695 1,795 1,915 1,555 2,200
20,000 323 356 455 458 730 750 702 694 569 585 690 563 987 1,870 1,980 2,110 1,710 2,430
25,000 348 383 490 493 787 808 756 748 613 630 743 607 1,063 2,015 2,135 2,275 1,845 2,620
30,000 370 407 521 524 836 858 803 795 651 670 790 645 1,129 2,145 2,270 2,420 1,965 2,780
35,000 389 429 548 552 880 903 845 837 686 705 832 679 1,189 2,260 2,390 2,550 2,070 2,885
40,000 407 448 573 577 920 944 884 875 717 737 870 709 1,243 2,360 2,500 2,665 2,165 3,025
50,000 438 483 617 622 991 1,017 952 942 772 794 937 764 1,339 2,545 2,695 2,875 2,330 3,200
60,000 466 513 656 661 1,053 1,081 1,012 1,001 821 844 995 812 1,423 2,705 2,865 3,055 2,480 3,350
80,000 513 564 722 727 1,159 1,190 1,114 1,102 903 929 1,096 894 1,566 2,985 3,160 3,365 2,730 3,540
100,000 552 608 778 783 1,249 1,282 1,200 1,187 973 1,001 1,180 963 1,687 3,215 3,405 3,630 2,945 3,685
150,000 632 696 890 897 1,430 1,467 1,373 1,359 1,114 1,146 1,351 1,102 1,931 3,685 3,905 4,160 3,375 4,030
200,000 696 766 980 987 1,574 1,615 1,511 1,496 1,226 1,261 1,487 1,213 2,125 4,060 4,300 4,580 3,720 4,230
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
Current-Limiting Effects of CCMR (600 V) fuses
1
Littelfuse.com 50 © 2022 Littelfuse, Inc.
UL Class Supplemental Fuses
Fuses – UL Supplemental
10 x 38 mm MIDGET FUSES
KLKD Series
Fast-Acting Fuse
600 V ac/dc
FLM Series
Time-Delay Fuse
250 V ac
QPL
FLQ Series
Time-Delay Fuse
500 V ac
BLF Series
Fast-Acting Fuse
125/250 V ac
AMPERE RATINGS 1/10 1 5 15 1/8 1 1/2 6 20 2/10 2 7 25 1/4 2 1/2 8 30 3/10 3 9 — 1/2 3 1/2 10 — 3/4 4 12 —
AMPERE RATINGS 1/10 1 5 15 1/8 1 1/2 6 20 2/10 2 7 25 1/4 2 1/2 8 30 3/10 3 9 — 1/2 3 1/2 10 — 3/4 4 12 —
AMPERE RATINGS 1/10 8/10 2 4 1/2 10 15/100 1 2 1/4 5 12 2/10 1 1/8 2 1/2 5 6/10 15 1/4 1 1/4 2 8/10 6 20 3/10 1 4/10 3 6 1/4 25 4/10 1 1/2 3 2/10 7 30 1/2 1 6/10 3 1/2 8 — 6/10 1 8/10 4 9 —
AMPERE RATINGS 1/10 1/2 2 5 12 1/8 6/10 2 1/4 5 6/10 14 15/100 8/10 2 1/2 6 15 3/16 1 3 6 1/4 20 2/10 1 1/8 3 2/10 7 25 1/4 1 1/4 3 1/2 8 30 3/10 1 1/2 4 9 — 4/10 1 6/10 4 1/2 10 —
AMPERE RATINGS
1 3 6 12 25
1 1/2 4 8 15 30
2 5 10 20 —
AMPERE RATINGS 1/2 3 7 15
1 4 8 20
1 1/2 5 9 25
2 6 10 30
2 1/2 6 1/4 12 —
Specifications
Fast-acting, high-interrupting capacity fuse
designed for control circuits, HID lighting,
street-lighting, meter circuits.
Voltage Ratings 600 V ac
500 V dc
Interrupting Ratings 100 kA @ 600 V ac
50 kA @ 500 V dc
(capable of 200 kA)
Approvals UL Listed (E10480)
CSA Certified (LR29862)
Dimensions L 38.1 mm (1 1
/2”)
D 10.31 mm (13/32”)
littelfuse.com/klk
Specifications
Fast-acting, high DC rated fuse used in solar
combiner boxes, DC control circuits, UPS
protection. Available in PC board mount.
Voltage Ratings 600 V ac/V dc
Interrupting Ratings Ac: 100 kA
200 kA Littelfuse self-certified
Dc: 1/10–30: 10 kA (UL 248-19)
1/10–30: 50 kA (UL 248-14)
Approvals* UL Listed (E339112 & E10480)
VDE Certified (No. 40033094)
CSA Certified (LR29862)
Dimensions L 38.1 mm (1 1
/2”)
D 10.31 mm (13/32”)
*Refer to Ordering Information Table on datasheet
littelfuse.com/klkd
Specifications
250V time-delay fuses used to protect
circuits with high in-rush. Especially suited for
supplemental protection of small motors.
Voltage Ratings 250 V ac
125 V dc self-certified @ 10 kA
Interrupting Ratings Ac: 10,000 A
Dc: 10,000 A Self Certified
Approvals UL Listed (File: E10480)
CSA Certified (029862_0_000)
Dimensions L 38.1 mm (1 1
/2”)
D 10.31 mm (13/32”)
littelfuse.com/flm
Specifications
500V time-delay fuses for supplemental
protection of control power transformers,
solenoids, and circuits with high in-rush. Ideal
for 480 V systems.
Voltage Ratings 500 V ac
300 V dc self-certified @ 10 kA
Interrupting Ratings 10 kA @ 500 V ac
Approvals UL Listed (E10480)
CSA Certified (LR29862)
Dimensions L 38.1 mm (1 1
/2”)
D 10.31 mm (13/32”)
littelfuse.com/flq
Specifications
250 volt BLN fuses provide low-cost
protection for military applications and control
circuits.
Voltage Ratings 250 V ac
Interrupting Ratings 10,000 A
Approvals UL Listed (E10480)
CSA Certified (LR29862)
Dimensions L 38.1 mm (1 1
/2”)
D 10.31 mm (13/32”)
littelfuse.com/bln
Specifications
BLF fuses are the lowest price midget fuse.
They are suitable for control circuit and
instrument protection in dry locations.
Voltage Ratings 250 V ac 1
/2 - 15 A
125 V ac 20 - 30 A
Interrupting Ratings 10 kA @ rated V ac
Approvals UL Listed (E10480)
CSA Certified (LR29862)
Dimensions L 38.1 mm (1 1
/2”)
D 10.31 mm (13/32”)
littelfuse.com/blf
KLK Series
Fast-Acting Fuse
600 V ac
QPL
BLN Series
Fast-Acting Fuse
250 V ac
QPL
1
© 2022 Littelfuse, Inc. 51 Littelfuse.com
UL Class Supplemental Fuses
Fuses – UL Supplemental
POWR-SAFE DEAD FRONT HOLDERS
LPSC/LPSM (600 V)
pg. 117
LPHV (1000 V)
pg. 116
10 x 38 mm MIDGET FUSES
BLS Series
Fast-Acting Fuse
600 V ac / 250 V ac
KLQ Series
Increased Time-Delay
600 V ac
AMPERE RATINGS 2/10 1 3 8 4/10 1 1/2 4 10 1/2 1 6/10 5 — 3/4 1 8/10 6 — 8/10 2 7 —
AMPERE RATINGS
1 2 5
1 6/10 3 6
Specifications
Slightly shorter than a traditional 10 x 38, BLS
fuses provide space saving protection for low
amperage applications.
Voltage Ratings 600 V ac 2
/10 - 5 A
250 V ac 6 - 10 A
Interrupting Ratings 10 kA @ rated V ac
Approvals UL Listed (E10480)
CSA Certified (LR29862)
Dimensions L 34.9 mm (1 3
/8”)
D 10.31 mm (13/32”)
littelfuse.com/bls
Specifications
Same physical size as the BLS fuse with more
time delay. Designed to protect gaseous vapor
fixtures, HID ballasts and other electronic
lighting circuits.
Voltage Ratings 600 V ac
Interrupting Ratings 10 kA @ rated V ac
Approvals UL Listed (E10480)
CSA Certified (LR29862)
Dimensions L 34.9 mm (1 3
/8”)
D 10.31 mm (13/32”)
littelfuse.com/klq
FLA Series
Time-Delay Pin Indicating Fuse
125 V ac
AMPERE RATINGS 1/10 8/10 2 4 1/2 12* 15/100 1 2 1/4 5 15* 2/10 1 1/8 2 1/2 5 6/10 20* 1/4 1 1/4 2 8/10 6 25* 3/10 1 4/10 3 6 1/4 30* 4/10 1 1/2 3 2/10 7 — 1/2 1 6/10 3 1/2 8 — 6/10 1 8/10 4 10 —
*12-30 A are dual tube design
Specifications
Pin indicating time-delay fuses. Use in
conjunction with special fuse blocks to
operate mechanical signal switches or
energize alarm circuits.
Voltage Ratings 125 V ac
Interrupting Ratings 10 kA @ rated V ac
Approvals UL Listed (E10480)
Dimensions L 38.1 mm (1 1
/2”)
D 10.31 mm (13/32”)
littelfuse.com/fla
Specifications
Multimeter protection fuses.
Voltage Rating 1000 V ac/dc
Interrupting Rating 44⁄100 A: 10 kA
11 A: 20 kA
Ampere Ratings 44⁄100 & 11 A
Time Constant 10 ms
Approvals UL Recognized (E10480)
CSA Certified (LR29862)
Dimensions 44⁄100 A: 13⁄32” x 13
⁄8”
11 A: 13⁄32” x 11
⁄2”
littelfuse.com/flu
10 x 38mm Midget Fuse Holder Configurations
OPEN FUSE BLOCK PC BOARD MOUNT
FUSE BLOCK
L60030M
pg. 107
L60030MPCB
pg. 109
FLU Series
Multimeter Protection
1000 V ac/dc
1
Littelfuse.com 52 © 2022 Littelfuse, Inc.
Glass / Electronic Fuses ............................................................. 53
Blade / Automotive Fuses........................................................... 56
ELECTRONIC FUSES AND BLADE FUSES
Table of Contents
Section Overview
Diverse application needs require a broad range of fuses. Littelfuse
offers a full line of fuses for various applications. As the market leader
in automotive and electronics fuses, we are able to deliver innovative
circuit protection solutions to our customers. Visit Littelfuse.com for
our full line of automotive and electronics solutions.
© 2022 Littelfuse, Inc. 53 Littelfuse.com
Glass / Electronic Fuses
Fuses – Glass / Electronic
HIGH DC VOLTAGE AND PC BOARD MOUNT FUSES
505 Series
Lead-Free 3AB, Fast-Acting
477 Series
5 x 20 mm Slo-Blo® Fuse
Dimensions mm (inches)
273 Series
Very Fast-Acting Microfuse
251 Series
Fast-Acting Pico® II Fuse
451 Series
NANO2® Very Fast-Acting
AMPERE RATINGS
10 16 25
12 20 30
AMPERE RATINGS
.5 2 5 10
.8 3.15 6.3 12
1 4 8 16
AMPERE RATINGS
.002 .031 .125 .400 .750 2
.005 .050 .200 .500 .800 3
.010 .062 .250 .600 1 4
.015 .100 .300 .700 1.5 5
AMPERE RATINGS
0.062 0.25 0.630 1.5 3.15 7
0.1 0.315 0.750 1.6 3.5 8
0.125 0.375 0.800 2 4 10
0.160 0.400 1 2.5 5 12
0.2 0.5 1.25 3 6.3 15
AMPERE RATINGS
.062 .500 1.25 3 7
.125 .630 1.5 3.5 10
.250 .750 2 4 12
.375 1 2.5 5 15
Add “L” suffix when
ordering RoHS compliant
451 series
Specifications
A 500 Vac/Vdc rated ceramic fuse with
remarkable interrupting rating in a compact
6.3 x 32 mm package, well suited for circuit
protection in high energy applications.
Voltage Rating 450 Vac (10 – 12 A)
250 Vdc (10 – 12 A)
500 Vac/dc (16 – 30 A)
Sample Part 0505010.MXP*
Axial Lead 505_XEP Series
Dimensions L 31.75 mm (1.25”)
D 6.35 mm (.25”)
littelfuse.com/505
*Bulk configurations only
Specifications
500 Vac/400 Vdc rated, 5 x 20 mm, time-lag,
surge withstand ceramic body fuse.
Voltage Rating 500 Vac
400 Vdc
Sample Part 0477002.MXP*
Axial Lead 477_XEP Series
Dimensions L 20 mm (.79”)
D 5.2 mm (.20”)
littelfuse.com/477
*Bulk configurations only
Specifications
Similar to 272 and 278 series, except has
transparent cap for visual indication of
fuse status. *See web for approvals by part.
Voltage Rating 125 Vac/dc
Sample Part 0273002.V
littelfuse.com/273
Specifications
The Nano2
SMF Fuse is a very small, Wire-inAir (WIA) square shape surface mount fuse
which is very suitable for the secondary side
circuit over-current protection applications
and is designed for PCB using surface mount
technology
*See web for approvals by part.
Voltage Rating 65 – 125 V
Sample Part 0451.125MP
littelfuse.com/451
L
F 1 A
7.11 (.280") REF.
0.64 (.025") DIA.
(1/16 – 10A) 0.81 (.032") DIA.
(12 – 15A)
2.80 (.110") DIA. MAX.
6.35
(.25")
8.89
(.35")
4.32
(.17")
2.54 (.10")
314 000P Series 324 000P Series
6.35 (.25)
31.75
(1.25)
32.72
(1.288)
6.985 (.275)
38.1
(1.5)
0.813 (.032)
1.016 (.040)
229 000P Series 230 000P Series
4.5
(.177")
14.48
(.57")
14.48
(.57")
4.7 (.184") .635
(.025")
38.1
(1.50") TYP.
5.1 (.22) 5.1 (.22)
5.2 (.20)
40 (1.57) 22.5 (.89) max.
6.0 (.24) max.
.65* (.026)
*Ratings above 6.3 A have 0.8 mm diameter lead.
Ratings above 12 A have 1.2 m diameter lead.
20 (.79)
3AG/3AB
2AG
5 x 20 mm
Specifications
Subminiature fuse for soldered mounting on
printed circuit boards. Available on tape and
reel for automatic insertion. *See web for
approvals by part.
Voltage Ratings 125 Vac/dc 1/16 – 10 A
32 Vac/dc 12 – 15 A
Sample Part 0251001.NAT1L
littelfuse.com/251
2
Littelfuse.com 54 © 2022 Littelfuse, Inc.
Glass / Electronic Fuses
Fuses – Glass / Electronic
LEADED AND CARTRIDGE FUSES
312/318 Series
3AG Fast-Acting
313/315 Series
3AG Slo-Blo®
314/324 Series
3AB Fast-Acting
326/325 Series
3AB Slo-Blo®
229/230 Series
2AG Slo-Blo®
AMPERE RATINGS
.062 .200 .750 1.8 5 15
.100 .250 1 2 6 20
.125 .300 1.25 2.25 7 25
.15 .375 1.5 2.5 8 30
.175 .500 1.6 3 10 35
.187 .600 1.75 4 12 —
225/224 Series
2AG Fast-Acting
AMPERE RATINGS
.010 .175 .500 1.25 2.8 7 30
.031 .187 .600 1.5 3 8 —
.040 .200 .700 1.6 3.2 10 —
.062 .250 .750 1.8 4 12 —
.100 .300 .800 2 5 15 —
.125 .375 1 2.25 6.25 20 —
.150 .400 1.2 2.5 6.3 25 —
AMPERE RATINGS
.375 2 6 12 30
.500 3 7 15 40
.750 4 8 20 —
1 5 10 25 —
AMPERE RATINGS
.010 .187 .600 1.5 4 15
.031 .200 .700 1.6 5 20
.062 .250 .750 2 6.25 25
.100 .300 .800 2.5 7 30
.125 .375 1 2.8 8 —
.150 .400 1.2 3 10 —
.175 .500 1.25 3.2 12 —
AMPERE RATINGS
.250 .750 2 4
.350 .800 2.25 5
.375 1 2.5 6
.500 1.25 3 7
.600 1.5 3.5 —
AMPERE RATINGS
.375 1 2.5 4 7
.500 1.5 3 5 8
.750 2 3.5 6 10
Specifications
Designed for fast-acting protection of
electronic equipment and appliances. The
“standard” fast-acting, glass tube fuse.
Voltage Ratings 250 Vac 1/100 – 10 A
32 Vac 12 – 35 A
Dimensions L 31.75 mm (1.25”)
D 6.35 mm (.25”)
Sample Part 0312005.VXP
For fuses with axial leads, request 318 Series.
littelfuse.com/312
Specifications
313 and 315 series fuses have time-delay
in the overload range, providing superior
protection for inductive loads. ID feature
available which discolors upon opening.
Voltage Ratings 250 Vac 1/100 – 8 A
32 Vac 10 – 30 A
Dimensions L 31.75 mm (1.25”)
D 6.35 mm (.25”)
Sample Part 0313005.VXP
For fuses with axial leads, request 315 Series.
For Fuses with ID, add “ID” suffix.
littelfuse.com/313
Specifications
Similar to 312 series, but ceramic tube
permits higher interrupting ratings and voltage
ratings: 250 volt ratings to 40 amps.
Voltage Rating 250 Vac 3/8 – 40 A
125 Vdc 3/8 – 30 A
150 Vdc 40 A
Dimensions L 31.75 mm (1.25”)
D 6.35 mm (.25”)
Sample Part 03145005.VXP
For fuses with axial leads, request 324 Series.
littelfuse.com/314
Specifications
The 326 series fuse has time-delay similar to
the 313 series, but the ceramic body permits
higher voltage ratings for the 8 – 30 ampere
sizes and faster opening of short-circuits.
Voltage Ratings 250 Vac 1/100 – 30 A
125 Vdc 1/4 – 3 A
125 Vdc 12 – 30 A
Dimensions L 31.75 mm (1.25”)
D 6.35 mm (.25”)
Sample Part 0326.100VXP
For fuses with axial leads, request 325 Series.
littelfuse.com/326
Specifications
2AG indicating fuses instantly identify
themselves upon opening by showing a
discoloration of their glass bodies, eliminating
guesswork. This unique design offers the same
quality performance characteristics as the
standard 2AG fuse design.*
Voltage Ratings 250 Vac 1/4 – 3 1/2 A
125 Vac 4 – 7 A
125 Vdc 1/4 – 7 A
Dimensions L 14.48 mm (.57”)
D 4.5 mm (.177”)
Sample Part 02291.25VXP
For fuses with axial leads, request 230 Series.
*Must add “S” suffix when ordering indicating fuse
littelfuse.com/229
Specifications
Fast-acting performance of the 312 series
3AG fuses in less than one-third the space.
For protection of electronic equipment
and appliances.
Voltage Ratings 250 Vac 3/8 – 3 1/2 A
125 Vac 4 – 10 A
125 Vdc 3/8 – 3 1/2 A
Dimensions L 14.48 mm (.57”)
D 4.5 mm (.177”)
Sample Part 0225003.VXP
For fuses with axial leads, request 224 Series.
littelfuse.com/225
Note: All fuses on this page are available in packaged and bulk configurations
2
© 2022 Littelfuse, Inc. 55 Littelfuse.com
Glass / Electronic Fuses
Fuses – Glass / Electronic
5 x 20 mm IEC LEADED AND CARTRIDGE FUSES
215 Series
5 x 20 mm IEC Slo-Blo®
216 Series
5 x 20 mm IEC Fast-Acting
217 Series
5 x 20 mm IEC Fast-Acting
218 Series
5 x 20 mm IEC Slo-Blo®
235 Series
5 x 20 mm UL/CSA Fast-Acting
239 Series
5 x 20 mm UL/CSA Slo-Blo®
AMPERE RATINGS
.125 .315 .800 2 5 12
.160 .400 1 2.5 6.3 15
.200 .500 1.25 3.15 8 16
.250 .630 1.6 4 10 20
AMPERE RATINGS
.050 .125 .315 1 2.5 6.3 16
.063 .160 .500 1.25 3.15 8 —
.080 .200 .630 1.6 4 10 —
.100 .250 .800 2 5 12.5 —
AMPERE RATINGS
.032 .100 .250 .630 1.6 4 10
.050 .125 .315 .800 2 5 15
.063 .160 .400 1 2.5 6.3 —
.080 .200 .500 1.25 3.15 8 —
AMPERE RATINGS
.032 .100 .315 1 3.15 10
.040 .125 .400 1.25 4 12.5
.050 .160 .500 1.6 5 15
.063 .200 .630 2 6.3 16
.080 .250 .800 2.5 8 —
AMPERE RATINGS
.100 .300 .700 1.60 3.5 7
.125 .400 .800 2 4 —
.200 .500 1 2.5 5 —
.250 .600 1.25 3 6 —
AMPERE RATINGS
.080 .200 .500 .800 2 3.20 7
.100 .250 .600 1 2.5 3.50 —
.125 .300 .700 1.25 3 4 —
.150 .400 .750 1.60 3.15 5 —
Specifications
Time-delay protection of electronic equipment
and appliances when fuses to International
Standards are required. Replacement fuse
for foreign equipment.
Voltage Rating 250 Vac
Dimensions L 20 mm (.79”)
D 5.2 mm (.20”)
Sample Part 0215005.VXP
For fuses with axial leads, request 215_XEP series.
littelfuse.com/215
Specifications
Fast-acting protection of electronic equipment
and appliances when fuses to International
Standards are required. Replacement fuse for
foreign equipment.
Voltage Rating 250 Vac
60 Vdc (1.25-3.15, 4-6.3 A only)
Dimensions L 20 mm (.79”)
D 5.2 mm (.20”)
Sample Part 0216005.VXP
For fuses with axial leads, request 216_XEP series.
littelfuse.com/216
Specifications
Fast-acting protection of electronic equipment
and appliances when fuses to International
Standards are required. Replacement fuse for
foreign equipment.
Voltage Rating 250 Vac
75Vdc (2-3.15 A only)
60 Vdc (6.3, 2.-5 A only)
Dimensions L 20 mm (.79”)
D 5.2 mm (.20”)
Sample Part 0217005.VXP
For fuses with axial leads, request 217_XEP series.
littelfuse.com/217
Specifications
Time-delay protection of electronic equipment
and appliances when fuses to International
Standards are required. Replacement fuse
for foreign equipment.
Voltage Rating 250 Vac
Dimensions L 20 mm (.79”)
D 5.2 mm (.20”)
Sample Part 0218005.VXP
For fuses with axial leads, request 218_XEP series.
littelfuse.com/218
Specifications
5 x 20 mm fuses designed to UL and CSA
standards. Fast-acting protection of electronic
equipment and appliances.
Voltage Ratings 250 Vac 1/10 – 3 1/2 A
125 Vac 4 – 7 A
Dimensions L 20 mm (.79”)
D 5.2 mm (.20”)
Sample Part 0235005.VXP
For fuses with axial leads, request 235_XEP series.
littelfuse.com/235
Specifications
5 x 20 mm fuses designed to UL and CSA
standards. Time-delay protection of electronic
equipment and appliances.
Voltage Ratings 250 Vac 2/10 – 3 1/2 A
125 Vac 4 – 7 A
Dimensions L 20 mm (.79”)
D 5.2 mm (.20”)
Sample Part 0239005.VXP
For fuses with axial leads, request 239_XEP series.
littelfuse.com/239
Note: All fuses on this page are available in packaged and bulk configurations
2
Littelfuse.com 56 © 2022 Littelfuse, Inc.
Blade / Automotive Fuses
Fuses – Blade / Automotive
BLADE FUSES
CURRENT
RATING
HOUSING
COLOR
1 A
2 A
3 A
4 A
5 A
7.5 A
10 A
15 A
20 A
25 A
30 A
40 A
10.90 (.429)
4.46
(.175) 1.00
(.039)
2.58
(.101)
6.15
(.242)
8.10
(.319)
3.81
(.150)
3.56
(.140)
2.21
0.80 (.087)
(.031)
CURRENT
RATING
HOUSING
COLOR
20 A
25 A
30 A
35 A
40 A
50 A
60 A
70 A
80 A
MAXI dimensions in mm (inches)
ATO dimensions in mm (inches)
MAXI™
Color Key
Specifications
Smart Glow fuses are innovative
automotive style fuses (ATO, MINI, and
MAXI) that feature an indicator light that
glows when the fuse is blown, saving
time to troubleshoot an open circuit.
Voltage Rating 14 Vdc
Sample Part 0MIN010.VPGLO
Specifications
The MINI® Fuse, with its miniature
design patented by Littelfuse, meets
the need for more circuits to be
protected while utilizing less space.
Voltage Rating 32 Vdc
Sample Part 0MIN020.V
littelfuse.com/mini
Fuses Rated 58 V
Low Profile MINI®
MINI®
Smart Glow
MINI® Fast-Acting
Specifications
The low profile MINI has similar
performance as the standard mini fuse.
The lower overall height allows for more
space and weight savings.
Voltage Rating 58 Vdc
Sample Part LMIN010.V
littelfuse.com/lmin
MINI dimensions in mm
Low Profile MINI
dimensions in mm (inches)
Specifications
Smart Glow fuses are innovative
automotive style fuses (ATO, MINI, and
MAXI) that feature indicator light that
glows when the fuse is blown, saving
time to troubleshoot an open circuit.
Voltage Rating 14 Vdc
Sample Part 0ATO010.VPGLO
ATO® ATO Fast-Acting ®
Smart Glow
Specifications
The ATO® Fuse was designed and
patented by Littelfuse in 1976 and set
the standard for automotive circuit
protection. It features industry standard
color coding to indicate amperage rating.
Voltage Rating 32 Vac/dc
Sample Part 0ATO020.V
littelfuse.com/ato
Specifications
Smart Glow fuses are innovative
automotive style fuses (ATO, MINI, and
MAXI) that feature an indicator light that
glows when the fuse is blown, saving
time to troubleshoot an open circuit.
Voltage Rating 14 Vdc
Sample Part 0MAX030.XPGLO
Specifications
Designed and patented by Littelfuse,
the MAXI™ Fuse is ideal for motor
powered applications which have
large inrush currents.
Voltage Rating 32 Vdc
Sample Part 0MAX030.X
littelfuse.com/maxi
ATO® / MINI®
Color Key
MINI Fuses are available in packaged and bulk configurations. See 297 series on web.
ATO Fuses are available in packaged and bulk configurations. See 287 series on web.
MAXI Fuses are available in packaged and bulk configurations. See 299 series on web.
Note: MINI not available in
1 A or 40 A.
MAXI™ MAXI™ Slo-Blo
Smart Glow
2
© 2022 Littelfuse, Inc. 57 Littelfuse.com
Blade / Automotive Fuses
Fuses – Blade / Automotive
BLADE FUSES
Specifications
The JCASE is a cartridge style fuse
with female terminal design. JCASE
provides both increased time delay
and low voltage drop to protect high
current circuits. JCASE has the ability to
handle in-rush currents. The JCASE was
designed and patented by Littelfuse.
littelfuse.com/jcase
Low Profile JCASE®
Fuse Rated 58 V
JCASE® Cartridge
Fuse Rated 32 V
Specifications
The Low Profile JCASE fuse has
similar performance characteristics as
the standard JCASE fuse. The lower
overall height reduction allows for
more space and weight savings and
also allows for a shorter male blade
terminal, saving additional weight and
material savings in fuse box designs.
FHAC Blade Fuse Holders—In-Line Splash-Waterproof
Fuse Holder for ATO® Style Blade Fuse
Wire length, color and diameter can be
customized upon request.
Used with ATO Fuse 1 to 20 A or
25 A and 30 A. Supplied with
two 4” (102mm) wire leads.
Includes protective cover for
harsh environments.
littelfuse.com/fha
FHA Blade Fuse Holders—In-Line Fuse Holder
for ATO® Style Blade Fuse
Wire length, color and diameter can be
customized upon request.
Used with ATO Fuse 1 to 20 A or
25 A and 30 A. Supplied with
two 4” (102mm) wire leads.
littelfuse.com/fha
MAH Blade Fuse Holders—In-Line Fuse Holder for
MAXI™ Style Blade Fuse
Supplied with two 6”, 6-gauge wire leads
for up to 60 A MAXI Fuse applications,
this In-Line Fuse holder also provides a
protective cover for harsh under-the-hood
environments. Mounting hole permits
easy bulkhead installation.
littelfuse.com/mah
FHM Blade Fuse Holders—In-Line Splash-Waterproof
Fuse Holder for MINI® Style Blade Fuse
Wire length, color and diameter can be
customized upon request.
Used with MINI Fuse 1 to 20 A
or 25 A and 30 A. Supplied with
two 4.78” (122 mm) wire leads.
Includes protective cover for
harsh environment.
littelfuse.com/fhm
Low Profile JCASE® 58 V
Dimensions in mm
CURRENT
RATING
HOUSING
COLOR
20 A
25 A
30 A
40 A
50 A
60 A
JCASE®
Color Key
0FHA0002
0FHA0001
PART
NUMBER DESCRIPTION FUSE
RATING
0FHA0001_ 16AWG/1.3mm2
STRANDED BLACK WIRE 20 A
0FHA0002_ 12AWG/3.3mm2
STRANDED ORANGE WIRE 30 A
PART
NUMBER DESCRIPTION FUSE
RATING
FHAC0001_ 16AWG/1.3mm2
STRANDED BLACK WIRE 20 A
FHAC0002_ 12AWG/3.3mm2
STRANDED ORANGE WIRE 30 A
PART
NUMBER DESCRIPTION FUSE
RATING
0FHM0001_ 14AWG/2.1mm2
STRANDED BLACK WIRE 20 A
0FHM0002_ 12AWG/3.3mm2
STRANDED ORANGE WIRE 30 A
Dimensions in mm
PART
NUMBER DESCRIPTION FUSE
RATING
0MAH0001Z WIRE COLOR BLACK 60 A
JCASE® 32 V
Dimensions in mm
Dimensions in mm
Dimensions in mm
2
Littelfuse.com 58 © 2022 Littelfuse, Inc.
Blade / Automotive Fuses
Fuses – Blade / Automotive
2
© 2022 Littelfuse, Inc. 59 Littelfuse.com
Medium Voltage Fuses Overview .............................................. 60
R-Rated Medium Voltage Fuses................................................. 61
E-Rated Medium Voltage Fuses ................................................. 63
Medium Voltage Live Parts......................................................... 69
Table of Contents
MEDIUM VOLTAGE FUSES
Section Overview
Littelfuse is your source for a fast replacement of E- and R-rated
medium voltage fuses. Our emergency service gets you the fuses
you need quickly to minimize downtime of your critical operations.
60
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Medium Voltage Fuses
3
– Medium Voltage
Description
Littelfuse® offers a selection of E- and R-rated medium
voltage fuses for the protection of transformers, potential
transformers, feeders, and motor circuits. Single, double,
and triple barrel designs are available to cover a wide range
of current, voltage, and interrupting ratings. Conventional
ferrule type, clip lock, and bolt-in mounting configurations
are available for virtually any application. Hermetically sealed
fuses for use in hazardous environments are also offered.
Contact the factory or your local Littelfuse representative for
additional fuse ratings or custom mounting configurations.
24-Hour Emergency Service - Call 800-227-0029
Applications
• Power Transformer Protection
• Potential Transformer Protection
• Motor Controller Back-up Protection
• Fused Switches
• Feeder Circuits
General Information
The terms “Medium Voltage” and “High Voltage” have been
used interchangeably by many people to describe fuses
operating above 600 volts. Technically speaking, medium
voltage fuses are those intended for the voltage range from
2,400 to 38,000 Vac. High voltage fuses are for circuits
carrying voltages greater than 38,000 Vac.
E-rated fuses are considered to be general purpose fuses
and can be used to protect against low and high values
of fault current. R-rated fuses are designed for back-up
protection. They must be used in series with other devices
such as motor overload relays in order to achieve both
overload and short-circuit protection.
Medium voltage fuses are not intended to provide overload
protection in the same sense as fuses rated 600 volts or
less. Medium voltage fuse current ratings do not have the
same meanings as the ampere ratings of low voltage fuses.
All medium voltage fuses are limited in their ability to
interrupt low value overcurrents, especially those between
100% and 200% of the fuse’s continuous current rating.
They are designed to carry their rated current without
exceeding the temperature rise permitted by NEMA and
ANSI standards.
Current-limiting E- and R-rated
fuses are equipped with a
mechanical indicator or striker pin
that protrudes through the fuse
cap upon operation of the fuse.
This provides visual identification
of a blown fuse and can be used
as a trigger for external devices.
Note: Extension distance 1/2” minimum;
extension force 2 lb. minimum.
MEDIUM VOLTAGE FUSES
2,400-38,000 Vac • Current-Limiting
Bolt-in Mount Fuses
61
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Medium Voltage Fuses
3
– Medium Voltage
R-RATED MEDIUM VOLTAGE FUSES
Description
R-rated fuses provide required short-circuit protection for
medium voltage motors, motor controllers and associated
circuitry. These components have limited ability to absorb the
energy of large short-circuit currents. Medium voltage motor
controllers contain overload relays which provide both overload
protection and locked rotor protection to the motor. The
controllers are also intended to interrupt low value short-circuits
within the capability of the motor controller. This protects the
medium voltage fuse from sustained overcurrents which are
less than their minimum interrupting rating.
NEMA Standards for R-rated medium voltage power fuses
require they operate within 15–35 seconds when subjected
to an rms current 100 times the R rating. For example, a
fuse with a 2R rating will open within 15 to 35 seconds on
an applied current of 2 x 100 = 200 amperes.
Ordering Number
3"DIA
Dim.A
Clip
Center
6.38"
Dim.B
9.75"
A
Figure 1 D Figure 2 DD Figure 3 DDD
Hookeye Feature*
For hookeye attachment; add “W” suffix
to part number
*See web for Bolt Mount, Inverted Bolt Mount, and Bolt-In dimensions
Max Voltage (KV)
Style:
C (Cartridge)
B (Bolt Mount)
IB (Inverted Bolt Mount)
BI (Bolt-In Mount)
No. of Barrels
Rating (size)
Continuous Current
Characteristics
Voltage Ratings 2,750 V – 8,250 V
Current Range 2R – 36R
Options
• Hermetically sealed for use in hazardous locations
(add “S” suffix to part number)
• Bolt-in mounting configurations
Bolt Mount “B”
Sample Part #: 130-4R-1B-5.5
Inverted-Bolt “IB”
Sample Part #: 130-4R-1IB-5.5
Bolt-In Mount “BI”
Sample Part #: 130-4R-1BI-5.5
Cartridge “C”
Dimensions
Medium Voltage
Fuse Protection
POWR-GARD® medium
voltage fuses provide
short-circuit protection
for motors and
transformers rated
2,400 to 38,000 volts AC.
Visit Littelfuse.com/MediumVoltage to
download the white paper featuring protection
tables, sizing recommendations, and applications.
130-4R-1C-5.5
62
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Medium Voltage Fuses
3
– Medium Voltage
R-RATED MEDIUM VOLTAGE FUSES
R
RATED
ORDERING/
CATALOG
NUMBER
SIZE
MAXIMUM
CONTINUOUS
CURRENT @
40 DEGREES C°
DIM. A
(INCHES)
DIM. B
(INCHES)
MINIMUM
INTERRUPTING
RATING RMS
AMPS
MAXIMUM
INTERRUPTING
RATING RMS
(ASYM)*
FIGURE
NUMBER
5.5 KV
702R1C5.5 2R 70 12" 15.875" 170 80,000 1
1003R1C5.5 3R 100 12" 15.875" 250 80,000 1
1304R1C5.5 4R 130 12" 15.875" 340 80,000 1
1505R1C5.5 5R 150 12" 15.875" 390 80,000 1
1706R1C5.5 6R 170 12" 15.875" 500 80,000 1
2009R1C5.5 9R 200 12" 15.875" 760 80,000 1
23012R1C5.5 12R 230 12" 15.875" 1000 80,000 1
39018R2C5.5 18R 390 12" 15.875" 1500 80,000 2
45024R2C5.5 24R 450 12" 15.875" 1950 80,000 2
48026R2C5.5 26R 480 12" 15.875" 2100 80,000 2
55030R2C5.5 30R 550 12" 15.875" 2400 80,000 2
60032R2C5.5 32R 600 12" 15.875" 2600 80,000 2
65036R2C5.5 36R 650 12" 15.875" 2900 80,000 2
55030R3C5.5 30R 550 12" 15.875" 2400 80,000 3
60032R3C5.5 32R 600 12" 15.875" 2600 80,000 3
65036R3C5.5 36R 650 12" 15.875" 2900 80,000 3
R
RATED
ORDERING/
CATALOG
NUMBER
SIZE
MAXIMUM
CONTINUOUS
CURRENT @
40 DEGREES C°
DIM. A
(INCHES)
DIM. B
(INCHES)
MINIMUM
INTERRUPTING
RATING RMS
AMPS
MAXIMUM
INTERRUPTING
RATING RMS
(ASYM)*
FIGURE
NUMBER
8.25 KV
702R1C8.25 2R 70 12" 15.875" 190 80,000 1
1003R1C8.25 3R 100 12" 15.875" 225 80,000 1
1304R1C8.25 4R 130 12" 15.875" 330 80,000 1
1505R1C8.25 5R 150 12" 15.875" 440 80,000 1
1706R1C8.25 6R 170 12" 15.875" 500 80,000 1
2009R1C8.25 9R 200 12" 15.875" 740 80,000 1
23012R1C8.25 12R 230 12" 15.875" 955 80,000 1
39018R2C8.25 18R 390 12" 15.875" 1440 80,000 2
45024R2C8.25 24R 450 12" 15.875" 1910 80,000 2
R
RATED
ORDERING/
CATALOG
NUMBER
SIZE
MAXIMUM
CONTINUOUS
CURRENT @
40 DEGREES C°
DIM. A
(INCHES)
DIM. B
(INCHES)
MINIMUM
INTERRUPTING
RATING RMS
AMPS
MAXIMUM
INTERRUPTING
RATING RMS
(ASYM)*
FIGURE
NUMBER
5.5 KV
14”CLIP CENTERS
702R1C5.5X 2R 70 14" 17.875" 170 80,000 1
1003R1C5.5X 3R 100 14" 17.875" 250 80,000 1
1304R1C5.5X 4R 130 14" 17.875" 340 80,000 1
1505R1C5.5X 5R 150 14" 17.875" 390 80,000 1
1706R1C5.5X 6R 170 14" 17.875" 500 80,000 1
2009R1C5.5X 9R 200 14" 17.875" 760 80,000 1
23012R1C5.5X 12R 230 14" 17.875" 1000 80,000 1
39018R2C5.5X 18R 390 14" 17.875" 1500 80,000 2
45024R2C5.5X 24R 450 14" 17.875" 1950 80,000 2
55030R2C5.5X 30R 550 14” 17.875” 2400 80,000 2
R
RATED
ORDERING/
CATALOG
NUMBER
SIZE
MAXIMUM
CONTINUOUS
CURRENT @
40 DEGREES C°
DIM. A
(INCHES)
DIM. B
(INCHES)
MINIMUM
INTERRUPTING
RATING RMS
AMPS
MAXIMUM
INTERRUPTING
RATING RMS
(ASYM)*
FIGURE
NUMBER
2.75 KV
702R1C2.75 2R 70 7" 10.875" 170 80,000 1
1003R1C2.75 3R 100 7" 10.875" 250 80,000 1
1304R1C2.75 4R 130 7" 10.875" 340 80,000 1
1505R1C2.75 5R 150 7" 10.875" 390 80,000 1
1706R1C2.75 6R 170 7" 10.875" 500 80,000 1
2009R1C2.75 9R 200 7" 10.875" 760 80,000 1
23012R1C2.75 12R 230 7" 10.875" 1000 80,000 1
39018R2C2.75 18R 390 7" 10.875" 1500 80,000 2
45024R2C2.75 24R 450 7" 10.875" 1950 80,000 2
* RMS Asymmetrical amperes = RMS Symmetrical amperes x 1.6
For hookeye attachment add “W” suffix to part number
63
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Medium Voltage Fuses
3
– Medium Voltage
E-RATED MEDIUM VOLTAGE FUSES
Description
E-rated fuses have time current characteristics designed to
provide current-limiting protection for power transformers,
potential transformers, power centers, feeder centers, and
unit sub stations. When properly applied, they can protect
against high and low fault currents.
NEMA Standards for E-rated medium voltage fuses require
that fuses rated 100E or less open within 300 seconds
(5 minutes) when subjected to an RMS value of 200-240%
of the fuse continuous current rating; and fuses with an
E rating larger than 100E must open within 600 seconds
(10 minutes) when subjected to an RMS current of 220-
240% of the fuse’s continuous current rating. These values
establish one point on the time-current curve.
Application Note
Since these fuses are used for the protection of general
purpose circuits which may contain transformers, motors,
and other equipment producing in-rush and/or overload
currents, fuses should generally be rated at 140% of the
normal full load current, and circuits should be analyzed
to ensure that system load currents will not exceed the
current rating of the fuse.
3"DIA
Dim.A
Clip
Center
6.38"
Dim.B
9.75"
A
Figure 4 D Figure 5 DD Figure 6 DDD
Characteristics
Voltage Ratings 2,750 V – 38,000 V
Current Range 10E – 600E
Options
• Hermetically sealed for use in hazardous locations
(add “S” suffix to part number)
• Clip-lock (CL) available.
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)*
FIGURE
NUMBER
2.75 MAX. KV
10E1C2.75 10E 7" 10.875" 80,000 4
15E1C2.75 15E 7" 10.875" 80,000 4
20E1C2.75 20E 7" 10.875" 80,000 4
25E1C2.75 25E 7" 10.875" 80,000 4
30E1C2.75 30E 7" 10.875" 80,000 4
40E1C2.75 40E 7" 10.875" 80,000 4
50E1C2.75 50E 7" 10.875" 80,000 4
65E1C2.75 65E 7" 10.875" 80,000 4
80E1C2.75 80E 7" 10.875" 80,000 4
100E-1C2.75 100E 7" 10.875" 80,000 4
125E1C2.75 125E 7" 10.875" 80,000 4
150E1C2.75 150E 7" 10.875" 80,000 4
200E1C2.75 200E 7" 10.875" 80,000 4
125E2C2.75 125E 7" 10.875" 80,000 5
150E2C2.75 150E 7" 10.875" 80,000 5
200E2C2.75 200E 7" 10.875" 80,000 5
250E2C2.75 250E 7" 10.875" 80,000 5
300E2C2.75 300E 7" 10.875" 80,000 5
350E2C2.75 350E 7" 10.875" 80,000 5
400E2C2.75 400E 7" 10.875" 80,000 5
450E2C2.75 450E 7" 10.875" 80,000 5
Dimensions
* RMS Asymmetrical amperes = RMS Symmetrical amperes x 1.6
64
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Medium Voltage Fuses
3
– Medium Voltage
E-RATED MEDIUM VOLTAGE FUSES
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)* FIGURE NUMBER
5.5 MAX. KV
10E1C5.5 10E 12" 15.875" 80,000 4
15E1C5.5 15E 12" 15.875" 80,000 4
20E1C5.5 20E 12" 15.875" 80,000 4
25E1C5.5 25E 12" 15.875" 80,000 4
30E1C5.5 30E 12" 15.875" 80,000 4
40E1C5.5 40E 12" 15.875" 80,000 4
50E1C5.5 50E 12" 15.875" 80,000 4
65E1C5.5 65E 12" 15.875" 80,000 4
80E1C5.5 80E 12" 15.875" 80,000 4
100E1C5.5 100E 12" 15.875" 80,000 4
125E1C5.5 125E 12" 15.875" 80,000 4
150E1C5.5 150E 12" 15.875" 80,000 4
175E1C5.5 175E 12" 15.875" 80,000 4
200E1C5.5 200E 12" 15.875" 80,000 4
125E2C5.5 125E 12" 15.875" 80,000 5
150E2C5.5 150E 12" 15.875" 80,000 5
200E2C5.5 200E 12" 15.875" 80,000 5
250E2C5.5 250E 12" 15.875" 80,000 5
300E2C5.5 300E 12" 15.875" 80,000 5
350E2C5.5 350E 12" 15.875" 80,000 5
400E2C5.5 400E 12" 15.875" 80,000 5
450E2C5.5 450E 12" 15.875" 80,000 5
500E3C5.5 500E 12" 15.875" 80,000 6
550E3C5.5 550E 12" 15.875" 80,000 6
600E3C5.5 600E 12" 15.875" 80,000 6
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)* FIGURE NUMBER
5.5 MAX. KV
5NLE10E 10E 14” 177
⁄8" 80,000 4
5NLE15E 15E 14” 177
⁄8" 80,000 4
5NLE20E 20E 14” 177
⁄8" 80,000 4
5NLE25E 25E 14” 177
⁄8" 80,000 4
5NLE30E 30E 14” 177
⁄8" 80,000 4
5NLE40E 40E 14” 177
⁄8" 80,000 4
5NLE50E 50E 14” 177
⁄8" 80,000 4
5NLE65E 65E 14” 177
⁄8" 80,000 4
5NLE80E 80E 14” 177
⁄8" 80,000 4
5NLE100E 100E 14” 177
⁄8" 80,000 4
5NLE125E 125E 14“ 177
⁄8" 80,000 4
5NLE150E 150E 14” 177
⁄8" 80,000 4
5NLE175E 175E 14” 177
⁄8" 80,000 4
5NLE200E 200E 14” 177
⁄8" 80,000 4
5NLE2225E 225E 14” 177
⁄8" 80,000 5
5NLE2250E 250E 14” 177
⁄8" 80,000 5
5NLE2300E 300E 14” 177
⁄8" 80,000 5
5NLE2350E 350E 14” 177
⁄8" 80,000 5
5NLE2400E 400E 14” 177
⁄8" 80,000 5
5NLE2450E 450E 14” 177
⁄8" 80,000 5
* RMS Asymmetrical amperes = RMS Symmetrical amperes x 1.6
65
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Medium Voltage Fuses
3
– Medium Voltage
E-RATED MEDIUM VOLTAGE FUSES
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)* FIGURE NUMBER
15.5 MAX. KV
10E1C15.5 10E 15" 18.875" 80,000 4
15E1C15.5 15E 15" 18.875" 80,000 4
20E1C15.5 20E 15" 18.875" 80,000 4
25E1C15.5 25E 15" 18.875" 80,000 4
30E1C15.5 30E 15" 18.875" 80,000 4
40E1C15.5 40E 15" 18.875" 80,000 4
50E1C15.5 50E 15" 18.875" 80,000 4
65E1C15.5 65E 15" 18.875" 80,000 4
80E1C15.5 80E 15" 18.875" 80,000 4
100E1C15.5 100E 15" 18.875" 80,000 4
65E2C15.5 65E 15" 18.875" 80,000 5
80E2C15.5 80E 15" 18.875" 80,000 5
100E2C15.5 100E 15" 18.875" 80,000 5
125E2C15.5 125E 15" 18.875" 80,000 5
150E2C15.5 150E 15" 18.875" 80,000 5
175E2C15.5 175E 15" 18.875" 80,000 5
200E2C15.5 200E 15" 18.875" 80,000 5
200E3C15.5 200E 15" 18.875" 80,000 6
250E3C15.5 250E 15" 18.875" 80,000 6
300E3C15.5 300E 15" 18.875" 80,000 6
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)* FIGURE NUMBER
8.25 MAX. KV
10E1C8.25 10E 12" 157
⁄8" 80,000, 4
15E1C8.25 15E 12" 157
⁄8" 80,000 4
20E1C8.25 20E 12" 157
⁄8" 80,000 4
25E1C8.25 25E 12" 157
⁄8" 80,000 4
30E1C8.25 30E 12" 157
⁄8" 80,000 4
40E1C8.25 40E 12" 157
⁄8" 80,000 4
50E1C8.25 50E 12" 157
⁄8" 80,000 4
65E1C8.25 65E 12" 157
⁄8" 80,000 4
80E1C8.25 80E 12" 157
⁄8" 80,000 4
100E1C8.25 100E 12" 157
⁄8" 80,000 4
125E1C8.25 125E 12" 157
⁄8" 80,000 4
150E1C8.25 150E 12" 157
⁄8" 80,000 4
125E2C8.25 125E 12" 157
⁄8" 80,000 5
150E2C8.25 150E 12" 157
⁄8" 80,000 5
200E2C8.25 200E 12" 157
⁄8" 80,000 5
250E2C8.25 250E 12" 157
⁄8" 80,000 5
300E2C8.25 300E 12" 157
⁄8" 80,000 5
350E3C8.25 350E 12" 157
⁄8" 80,000 6
400E3C8.25 400E 12" 157
⁄8" 80,000 6
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)* FIGURE NUMBER
8.25 MAX. KV
8NLE10E 10E 14" 177
⁄8" 80,000 4
8NLE15E 15E 14" 177
⁄8" 80,000 4
8NLE20E 20E 14" 177
⁄8" 80,000 4
8NLE25E 25E 14" 177
⁄8" 80,000 4
8NLE30E 30E 14" 177
⁄8" 80,000 4
8NLE40E 40E 14" 177
⁄8" 80,000 4
8NLE50E 50E 14" 177
⁄8" 80,000 4
8NLE65E 65E 14" 177
⁄8" 80,000 4
8NLE80E 80E 14" 177
⁄8" 80,000 4
8NLE100E 100E 14" 177
⁄8" 80,000 4
8NLE2100E 100E 14" 177
⁄8" 80,000 5
8NLE2125E 125E 14" 177
⁄8" 80,000 5
8NLE2150E 150E 14" 177
⁄8" 80,000 5
8NLE2200E 200E 14" 177
⁄8" 80,000 5
8NLE2250E 250E 14" 177
⁄8" 80,000 5
* RMS Asymmetrical amperes = RMS Symmetrical amperes x 1.6
66
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Medium Voltage Fuses
3
– Medium Voltage
* RMS Asymmetrical amperes = RMS Symmetrical amperes x 1.6
E-RATED MEDIUM VOLTAGE FUSES
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)*
FIGURE
NUMBER
15.5 MAX. KV
15GSE65E 65E 18" 217
⁄8" 60,000 4
15GSE80E 80E 18" 217
⁄8" 60,000 4
15GSE100E 100E 18" 217
⁄8" 60,000 4
15GSE2125E 125E 18" 217
⁄8" 60,000 5
15GSE2150E 150E 18" 217
⁄8" 60,000 5
15GSE2175E 175E 18" 217
⁄8" 60,000 5
15GSE2200E 200E 18" 217
⁄8" 60,000 5
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)*
FIGURE
NUMBER
38 MAX. KV
3E1C38.0 3E 27" 307
⁄8" 20,000 4
7E1C38.0 7E 27" 307
⁄8” 20,000 4
10E1C38.0 10E 27" 307
⁄8” 20,000 4
15E1C38.0 15E 27" 307
⁄8” 20,000 4
20E1C38.0 20E 27" 307
⁄8” 20,000 4
25E1C38.0 25E 27" 307
⁄8” 20,000 4
30E1C38.0 30E 27" 307
⁄8” 20,000 4
40E1C38.0 40E 27" 307
⁄8” 20,000 4
50E2C38.0 50E 27" 307
⁄8” 20,000 5
65E2C38.0 65E 27" 307
⁄8” 20,000 5
80E2C38.0 80E 27" 307
⁄8” 20,000 5
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)*
FIGURE
NUMBER
25.8 MAX. KV
15E1C25.8 15E 21" 247
⁄8" 40,000 4
20E1C25.8 20E 21" 247
⁄8” 40,000 4
25E1C25.8 25E 21" 247
⁄8” 40,000 4
30E1C25.8 30E 21" 247
⁄8” 40,000 4
40E1C25.8 40E 21" 247
⁄8” 40,000 4
50E1C25.8 50E 21" 247
⁄8” 40,000 4
65E2C25.8 65E 21" 247
⁄8” 40,000 5
80E2C25.8 80E 21" 247
⁄8” 40,000 5
100E2C25.8 100E 21" 247
⁄8” 40,000 5
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)*
FIGURE
NUMBER
15.5 MAX. KV
15NLE10E 10E 20" 237
⁄8" 60,000 4
15NLE15E 15E 20" 237
⁄8" 60,000 4
15NLE20E 20E 20" 237
⁄8" 60,000 4
15NLE25E 25E 20" 237
⁄8" 60,000 4
15NLE30E 30E 20" 237
⁄8" 60,000 4
15NLE40E 40E 20" 237
⁄8" 60,000 4
15NLE50E 50E 20" 237
⁄8" 60,000 4
15NLE65E 65E 20" 237
⁄8" 60,000 4
15NLE80E 80E 20" 237
⁄8" 60,000 4
15NLE100E 100E 20" 237
⁄8" 60,000 4
15NLE280E 80E 20" 237
⁄8" 60,000 5
15NLE2100E 100E 20" 237
⁄8" 60,000 5
15NLE2125E 125E 20" 237
⁄8" 60,000 5
15NLE2150E 150E 20" 237
⁄8" 60,000 5
15NLE2175E 175E 20" 237
⁄8" 60,000 5
15NLE2200E 200E 20" 237
⁄8" 60,000 5
15NLE3150E 150E 20" 237
⁄8" 60,000 6
15NLE3175E 175E 20" 237
⁄8" 60,000 6
15NLE3250E 250E 20" 237
⁄8" 60,000 6
15NLE3300E 300E 20" 237
⁄8" 60,000 6
67
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Medium Voltage Fuses
3
– Medium Voltage
E-RATED MEDIUM VOLTAGE FUSES
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)*
FIGURE
NUMBER
5.5 MAX. KV
CLIP LOCK
10E1CL5.5 10E 16.38" 15.13" 80,000 7
15E1CL5.5 15E 16.38" 15.13" 80,000 7
20E1CL5.5 20E 16.38" 15.13" 80,000 7
25E1CL5.5 25E 16.38" 15.13" 80,000 7
30E1CL5.5 30E 16.38" 15.13" 80,000 7
40E1CL5.5 40E 16.38" 15.13" 80,000 7
50E1CL5.5 50E 16.38" 15.13" 80,000 7
65E1CL5.5 65E 16.38" 15.13" 80,000 7
80E1CL5.5 80E 16.38" 15.13" 80,000 7
100E1CL5.5 100E 16.38" 15.13" 80,000 7
125E1CL5.5 125E 16.38" 15.13" 80,000 7
150E1CL5.5 150E 16.38" 15.13" 80,000 7
225E2CL5.5 225E 17.38" 16.13" 80,000 8
250E2CL5.5 250E 17.38" 16.13" 80,000 8
300E2CL5.5 300E 17.38" 16.13" 80,000 8
350E2CL5.5 350E 17.38" 16.13" 80,000 8
400E2CL5.5 400E 17.38" 16.13" 80,000 8
450E2CL5.5 450E 17.38" 16.13" 80,000 8
500E3CL5.5 500E 17.38" 16.13" 80,000 9
550E3CL5.5 550E 17.38" 16.13" 80,000 9
600E3CL5.5 600E 17.38" 16.13" 80,000 9
4.31 7.94 11.56
1.25
A B
1.25
.25
3.0
Clip Lock Design
The clip lock type designs ensures a positive contact between
the fuse and the connection cam. The fuse’s clip lock tab slides
in between the clip casting and the cam to prevent the fuse
from slipping or blowing out of the holder. This positive contact
improves heat dissipation and allows fuses to run cooler.
Figure 7 Figure 8 Figure 9
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)*
FIGURE
NUMBER
8.25 MAX. KV
CLIP LOCK
10E1CL8.25 10E 17.38" 16.13" 80,000 7
15E1CL8.25 15E 17.38" 16.13" 80,000 7
20E1C8.25 20E 17.38" 16.13" 80,000 7
25E1CL8.25 25E 17.38" 16.13" 80,000 7
30E1CL8.25 30E 17.38" 16.13" 80,000 7
40E1CL8.25 40E 17.38" 16.13" 80,000 7
50E1CL8.25 50E 17.38" 16.13" 80,000 7
65E1CL8.25 65E 17.38" 16.13" 80,000 7
80E1CL8.25 80E 17.38" 16.13" 80,000 7
100E1CL8.25 100E 17.38" 16.13" 80,000 7
125E2CL8.25 125E 17.38" 16.13" 80,000 8
150E2CL8.25 150E 17.38" 16.13" 80,000 8
175E2CL8.25 175E 17.38" 16.13" 80,000 8
200E2CL8.25 200E 17.38" 16.13" 80,000 8
225E2CL8.25 225E 17.38" 16.13" 80,000 8
250E2CL8.25 250E 17.38" 16.13" 80,000 8
300E2CL8.25 300E 17.38" 16.13" 80,000 8
350E3CL8.25 350E 17.38" 16.13" 80,000 9
E-RATED ORDERING/CATALOG
NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING
RATING RMS (ASYM)*
FIGURE
NUMBER
15.5 MAX. KV
CLIP LOCK
10E1CL15.5 10E 19.8" 18.1" 60,000 7
15E1CL15.5 15E 19.8" 18.1" 60,000 7
20E1CL15.5 20E 19.8" 18.1" 60,000 7
25E1CL15.5 25E 19.8" 18.1" 60,000 7
30E1CL15.5 30E 19.8" 18.1" 60,000 7
40E1CL15.5 40E 19.8" 18.1" 60,000 7
50E1CL15.5 50E 19.8" 18.1" 60,000 7
65E1CL15.5 65E 22.81" 21.13" 60,000 7
80E1CL15.5 80E 22.81" 21.13" 60,000 7
100E1CL15.5 100E 22.81" 21.13" 60,000 7
125E2CL15.5 125E 22.81" 21.13” 60,000 8
150E2CL15.5 150E 22.81” 21.13” 60,000 8
175E2CL15.5 175E 22.81" 21.13” 60,000 8
200E2CL15.5 200E 22.81” 21.13” 60,000 8
150E3CL15.5 150E 22.81" 21.13” 60,000 9
200E3CL15.5 200E 22.81" 21.13” 60,000 9
250E3CL15.5 250E 22.81" 21.13” 60,000 9
300E3CL15.5 300E 22.81" 21.13” 60,000 9
Dimensions in inches
* RMS Asymmetrical amperes = RMS Symmetrical amperes x 1.6
68
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Medium Voltage Fuses
3
– Medium Voltage
E-RATED POTENTIAL TRANSFORMER FUSES
A
B
Description
Potential Transformer (PT) fuses are current-limiting fuses
with high interrupting ratings designed for the protection of
potential transformers.
Application Note
When applying fuses for the protection of transformers,
the magnetizing current in-rush must be considered. The
characteristics of the in-rush, which can be matched with
a fuse time-current curve, should be available from the
transformer manufacturer.
Characteristics
Voltage Ratings 625 Vac – 25,800 Vac
Current Range 1/2E – 10E
E-RATED ORDERING/CATALOG
NUMBER SIZE LENGTH DIM. A
(INCHES)
DIAMETER DIM. B
(INCHES)
MAX INTERRUPTING
RATING RMS (ASYM)*
625
VOLT
3E4PT.6 3E 4.6” 0.8125” 37,500
5E4PT.6 5E 4.6” 0.8125” 37,500
7E4PT.6 7E 4.6” 0.8125” 37,500
10E4PT.6 10E 4.6” 0.8125” 37,500
2.75
MAX.
KV
500E4PT2.4 1/2E 4.6” 0.8125” 37,500
1E4PT2.4 1E 4.6” 0.8125” 37,500
2E4PT2.4 2E 4.6” 0.8125” 37,500
2.75
MAX. KV
1E6PT2.75 1E 7.4” 1.5625” 37,500
2E6PT2.75 2E 7.4” 1.5625” 37,500
3E6PT2.75 3E 7.4” 1.5625” 37,500
1E8PT2.75 1E 9.5” 1.5625” 37,500
2E8PT2.75 2E 9.5” 1.5625” 37,500
3E8PT2.75 3E 9.5” 1.5625” 37,500
4.8
MAX.
KV
1E5PT4.8 1E 5.6” 0.8125” 50,000
2E5PT4.8 2E 5.6” 0.8125” 50,000
5.5
MAX. KV
500E6PT5.5 1/2E 7.4” 1.5625” 50,000
1E6PT5.5 1E 7.4” 1.5625” 50,000
2E6PT5.5 2E 7.4” 1.5625” 50,000
3E6PT5.5 3E 7.4” 1.5625” 50,000
5E6PT5.5 5E 7.4” 1.5625” 50,000
500E8PT5.5 1/2E 9.5” 1.5625” 50,000
1E8PT5.5 1E 9.5” 1.5625” 50,000
2E8PT5.5 2E 9.5” 1.5625” 50,000
3E8PT5.5 3E 9.5” 1.5625” 50,000
5E8PT5.5 5E 9.5” 1.5625” 50,000
10E8PT5.5 10E 9.5” 1.5625” 50,000
8.25
MAX.
KV
500E8PT8.25 1/2E 9.5” 1.5625” 50,000
1E8PT8.25 1E 9.5” 1.5625” 50,000
2E8PT8.25 2E 9.5” 1.5625” 50,000
3E8PT8.25 3 9.5” 1.5625” 50,000
15.5
MAX. KV
500E11PT15.5 1/2E 12.8” 1.5625” 35,000
1E11PT15.5 1E 12.8” 1.5625” 35,000
2E11PT15.5 2E 12.8” 1.5625” 35,000
3E11PT15.5 3E 12.8” 1.5625” 35,000
3E16PT15.5 3E 17.5” 1.5625” 35,000
5E16PT15.5 5E 17.5” 1.5625” 35,000
25.8
MAX.
KV
500E16PT25.5 1/2E 17.5” 1.5625” 32,000
1E16PT25.5 1E 17.5” 1.5625” 32,000
Dimensions
* RMS Asymmetrical amperes = RMS Symmetrical amperes x 1.6
69
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Medium Voltage Fuses
3
– Medium Voltage Fuses – Medium Voltage
LIVE PARTS
TRIPLE BARREL
Bottom Lever In
Closed Position
.56 Dia. (2) Holes
For Mounting
Cable/Bus
.44 DIA. (2) HOLES
DOUBLE BARREL
SINGLE BARREL
1.75
1.00
2.00 2.00
2.00
4.9
4.85
3.63
3.63
3.75
Top Lever in
Open Position
A
Blown Fuse
Indicator
TOP
VIEW
.78 .63
.08
.30
.31
.08
.71
1.15
.05
.78
Description
Live parts are available for mounting E, R, and PT single, double, and triple barrel
fuses. Mounting clips are available for ferrule type and clip lock style fuses.
All clips are sold in pairs.
Part Number 700-520-CL
Ordering Number 0700520.ZXCL
Clip Lock Design
Part Number 700-530
Ordering Number 0700530.Z
For use with all 3" diameter fuses.
Dimensions for reference only.
Part Number 700-500
Ordering Number 0700500.Z
For use with all 13/16" (.8125”) diameter PT fuses
Part Number 700-156
Ordering Number 0700156.Z
For use with 19
/16" (1.5625”) to 15/8” (1.625”) diameter PT fuses.
Part Number 700-300
Ordering Number 0700300.Z
For use with 3” diameter fuses.
2.85
Mounting Hole
Dimension
2.00
3.74
1.00
Dimensions in inches
Dimensions in inches
Mounting Details for Clip Lock
CATALOG NUMBER DIMENSION A (INCHES)
10E1CL5.5 thru 150E1CL5.5 12.88
225E2CL5.5 thru 600E3CL5.5 13.88
10E1CL8.25 thru 350E3CL8.25 13.88
10E1CL15.5 thru 50E1CL15.5 16.25
65E1CL15.5 thru 300E3CL15.5 19.25
Littelfuse.com 70 © 2022 Littelfuse, Inc.
L17T Series Telecommunications Power Fuse............................71
TLN Series Telecommunications Power Fuse............................ 72
TLS Series Telecommunications Power Fuse ............................ 73
Alarm-Indicating Fuses ............................................................... 76
LTFD101 Telecommunication Disconnect Switch ...................... 77
TELECOM PRODUCTS
Table of Contents
Section Overview
Rely on Littelfuse for short circuit protection of telecommunications
circuits and sensitive DC power distribution circuits.
71
Fuses – Telecom Products
© 2022 Littelfuse, Inc. Littelfuse.com
Telecom Products
4
L17T SERIES TELECOM POWER FUSE
170 V dc • Current-Limiting • 70–1200 A
Description
Specifically designed for short-circuit protection of
telecommunications circuits, the Littelfuse L17T
series fuses provide reliable protection of sensitive
DC power distribution systems. Constructed with
silver plated elements for low I2
t and peak let-through,
these advanced fuses virtually eliminate equipment
damage due to surges and spikes. The L17T series
fuse unique element geometry also provides
cooler running temperatures, helping to minimize
heat within enclosures.
Features
• Low I2
t
• Extremely current-limiting
• Low operating temperature
• 170 Vdc rating
Specifications
Voltage Rating 170 Vdc
Interrupting Rating 100 kA
Ampere Range 70 – 1200 A
Approvals UL Recognized (File: E71611)
CSA Recognized (File: LR29862)
A
B
C
D
F
G
E
H
Fig. 3
Ordering Information
AMPERE
RATING
DIMENSIONS INCHES (mm)
A B C D E F G H
70–250 15
⁄32
(29.4)
17
⁄8
(47.6)
23
⁄16
(55.6)
221⁄32
(67.5)
1
(25.4)
7
⁄8
(22.2)
0.327
(8.3)
3
⁄16
(4.8)
300–800 11
⁄4
(31.8)
115⁄16
(49.2)
29
⁄16
(65.1)
31
⁄2
(88.9)
11
⁄2
(38.1)
1
(25.4)
13⁄32
(10.3)
1
⁄4
(6.35)
900–1200 111⁄32
(34.0) — — 41
⁄16
(103.1)
2
(50.8)
11
⁄2
(38.1) — 1
⁄4
(6.35)
AMPERE RATINGS
70 125 200 300 450 800 1100
90 150 225 350 500 900 1200
100 175 250 400 600 1000 —
Web Resources
For additional information, visit:
Littelfuse.com/l17t
SERIES VOLTAGE AMPERAGE CATALOG
NUMBER
ORDERING
NUMBER
L17T 170 1200 L17T 1200 L17T1200V
Dimensions Inches (mm)
72
Fuses – Telecom Products
Littelfuse.com © 2022 Littelfuse, Inc.
Telecom Products
4
TLN SERIES TELECOM POWER FUSE
170 Vdc • Current-Limiting • 1–600 A
Description
The TLN Series fuses are specifically designed for
the protection of telecommunications DC power
distribution circuits.
Features
• 170 Vdc rating
• Fast-acting and current-limiting
• 1 to 600 amperes rating
• Dimensionally similar to 250 V Class R fuses
Dimensions Inches (mm)
Specifications
Voltage Rating 170 Vdc
Interrupting Rating 100 kA
Ampere Range 1– 600 A
Approvals UL Recognized (File: E71611)
Ordering Information
Web Resources
For additional information, visit:
Littelfuse.com/tln
Recommended Fuse Holders
LFR25 Series ...................................................................... 94
AMPERE RATINGS
1 15 40 80 150 300 600
3 20 45 90 175 350 —
5 25 50 100 200 400 —
6 30 60 110 225 450 —
10 35 70 125 250 500 —
SERIES VOLTAGE AMP CATALOG
NUMBER
ORDERING
NUMBER
TLN 170VDC 6 TLN006 0TLN006.T
Replaces competitors’ TPN and TGN Series.
F
A
FIG. 1
G D
E C
B D
J
F
FIG. 2
A
B
C
H
K
AMPERES FIGURE
NUMBER
DIMENSIONS INCHES (mm)
A B C D E F G H J K
1 – 30 1 2 (50.8) 1
⁄2 (12.7) 1
⁄2 (12.7) 9
⁄16 (14.3) 5
⁄ 64 (2.0) 5
⁄32 (4.0) 3
⁄8 (9.5) — — —
35 – 60 1 3 (76.2) 3
⁄4 (19.1) 5
⁄8 (15.9) 13⁄16 (20.6) 3
⁄ 32 (2.4) 3
⁄16 (4.8) 5
⁄8 (15.9) — — —
70 – 100 2 57
⁄8 (149.2) 1 (25.4) 11
⁄16 (27.0) 11
⁄16 (27.0) 1
⁄8 (3.2) 3
⁄4 (19.1) 11
⁄4 (31.6) 1
⁄4 (6.4) 9
⁄32 (7.1) 1
⁄2 (12.7)
110 – 200 2 71
⁄8 (181.0) 11
⁄2 (38.1) 115⁄32 (37.3) 119⁄ 32 (40.5) 3
⁄16 (4.8) 11
⁄8 (28.6) 127⁄32 (46.8) 7
⁄16 (11.1) 9
⁄32 (7.1) 11⁄16 (17.5)
225 – 400 2 85
⁄8 (219.1) 2 (50.8) 115⁄16 (49.2) 23
⁄ 32 (53.2) 1
⁄4 (6.4) 15
⁄8 (41.3) 211⁄ 32 (59.5) 5
⁄8 (15.9) 13⁄32 (10.3) 15⁄16 (23.8)
450 – 600 2 103
⁄8 (263.5) 21
⁄2 (63.5) 23
⁄8 (60.3) 219⁄32 (65.9) 1
⁄4 (6.4) 2 (50.8) 227⁄ 32 (72.2) 3
⁄4 (19.1) 17⁄32 (13.5) 11
⁄8 (28.6)
73
Fuses – Telecom Products
© 2022 Littelfuse, Inc. Littelfuse.com
Telecom Products
4
170 V dc • Current-Limiting • 1–125 A
Description
Littelfuse TLS series fuses are designed specifically for
the protection of telecommunications equipment. TLS
fuses have been engineered to operate up to 170 V dc to
provide current-limiting short-circuit protection for cables
and components found in the dc power distribution circuits
of telecommunications systems. The compact design and
multiple mounting configurations of the TLS series allow it to
be used in a variety of applications.
Features
170 V dc rating
Current-limiting
1–125 amperes rating
Multiple mounting configurations — cartridge, vertical,
leaded, bolt-in, or solder type. See dimensions on the
following pages for mounting style details.
RoHS Compliant
Applications
Telecommunication equipment protection Short-circuit current protection
Recommended Fuse Holders
LFTD series disconnect switches
LFT30060 for TLS series cartridge style fuse
Contact factory for more information.
Web Resources
For additional information, visit: Littelfuse.com/tls
Specifications
Voltage Rating 170 V dc
Ampere Range 1–125 amperes
Interrupting Rating 100 kA
Approvals UL Recognized (File: E71611)
TUV (70 kA IR)
Material Body: glass melamine
Caps: silver-plated brass
Environmental RoHS Compliant, lead (Pb) free
Applicable Standards UL 248-1
IEC-60269-4
Ordering Information
AMPERE RATINGS
1 6 25 50 90
2 10 30 60 100
3 15 35 70 110*
5 20 40 80 125*
*Available in standard cartridge, LSE solder, and LR bolt-in.
Part Numbering System
0TLS xxx T –
Package Quantity
Series Mounting Options
Amp Code
T = 10
S = 20 (only LSA)
Blank = Cartridge
XV = Vertical
XL = Leaded
XLB = Bolt-In
XLS = Solder
XMB = Solder (Mid-Board Mount)
XLSE = Solder†
XLR = Bolt-In†
LSA = Solder
SERIES
AMPERE
MOUNTING
METHOD
MOUNTING
SUFFIX
CATALOG
NUMBER
ORDERING
NUMBER
FUSE
LABEL ID
TLS 6 Cartridge – TLS006 0TLS006.T TLS 6A
TLS 15 Vertical V TLS015V 0TLS015.TXV TLS 15A-V
TLS 35 Leaded L TLS035L 0TLS035.TXL TLS 35A-L
TLS 50 Bolt-In LB TLS050LB 0TLS050.TXLB TLS 50A-LB
TLS 80 Solder LS TLS080LS 0TLS080.TXLS TLS 80A-LS
TLS 100 Solder MB TLS100MB 0TLS100.TXMB TLS 100A-MB
TLS 125 Solder LSE TLS125LSE 0TLS125.TXLSE TLS 125A-LSE
TLS 125 Bolt-In LR TLS125LR 0TLS125.TXLR TLS 125A-LR
TLS 30 Solder LSA TLS030LSA 0TLS030.SLSA TLS 30A-LSA
†
Option is available for 35 to 125 amperage only
TLS SERIES TELECOM POWER FUSE
74
Fuses – Telecom Products
Littelfuse.com © 2022 Littelfuse, Inc.
Telecom Products
4
TLS SERIES TELECOM POWER FUSE
Dimensions
Millimeters [inches]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
H OL-0TLS000LS
Littelfuse® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 9/22/2020
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SHEET 1 OF 1
SCALE
TLS-LS OUTLINE & PAD LAYOUT
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
H 10/20/20 522885ECP/D - REDRAW IN INVENTOR, ADD METRIC DIMENSIONS MRY
14.21
[0.559]
22.28
[0.877]
24.00
[0.945]
(SEE NOTE 1)
18.29
[0.720]
3.99
[0.157]
REF
12.70
[0.500]
4.75 [0.187]
12.95 [0.510]
1.32
[0.052]
REF
4.19 [0.165]
21.84
[0.860]
MIN
24.49
[0.964]
MAX
NOTE:
1. MEASUREMENT TAKEN AT END OF TERMINALS.
LEAD-FREE SOLDERING PROFILE:
PRE-HEAT: ABOVE 130°C FOR 75 SECONDS MAX
REFLOW: 278°C FOR 8 SECONDS MAX
TIME: 250 SECONDS MAX.
MAX. TEMP: 280°C
PAD LAYOUT
3.05 [0.120]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-0TLS000
Littelfuse® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 9/30/2020
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
TLS CARTRIDGE STYLE OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
A 10/8/20 522906GCP - RELEASE MRY
ø 14.30
[0.563]
22.28
[0.877]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
H OL-0TLS000LS
Littelfuse® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 9/22/2020
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SHEET 1 OF 1
SCALE
TLS-LS OUTLINE & PAD LAYOUT
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
H 10/20/20 522885ECP/D - REDRAW IN INVENTOR, ADD METRIC DIMENSIONS MRY
14.21
[0.559]
22.28
[0.877]
24.00
[0.945]
(SEE NOTE 1)
18.29
[0.720]
3.99
[0.157]
REF
12.70
[0.500]
4.75 [0.187]
12.95 [0.510]
1.32
[0.052]
REF
4.19 [0.165]
21.84
[0.860]
MIN
24.49
[0.964]
MAX
NOTE:
1. MEASUREMENT TAKEN AT END OF TERMINALS.
LEAD-FREE SOLDERING PROFILE:
PRE-HEAT: ABOVE 130°C FOR 75 SECONDS MAX
REFLOW: 278°C FOR 8 SECONDS MAX
TIME: 250 SECONDS MAX.
MAX. TEMP: 280°C
PAD LAYOUT
3.05 [0.120]
Ferrule Version - TLS
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-0TLS000L
Littelfuse® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 9/30/2020
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SHEET 1 OF 1
SCALE
TLS-L SERIES OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
A 10/8/20 522906GCP - RELEASE MRY 4.94
[0.195]
REF
44.20
[1.740]
8.76
[0.345]
12.17
[0.479]
REF
ø14.30
[ø0.563]
44.70
[1.760]
42.10
[1.6575]
1.32
[0.052]
4.19
[0.165]
12.95
[0.510]
PAD LAYOUT
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-0TLS000L
Littelfuse® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 9/30/2020
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SHEET 1 OF 1
SCALE
TLS-L SERIES OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
A 10/8/20 522906GCP - RELEASE MRY 4.94
[0.195]
REF
44.20
[1.740]
8.76
[0.345]
12.17
[0.479]
REF
ø14.30
[ø0.563]
44.70
[1.760]
42.10
[1.6575]
1.32
[0.052]
4.19
[0.165]
12.95
[0.510]
PAD LAYOUT
Solder Mount - L Version
Solder Mount - LS Version
4.09
[ ] 0.161
4.75
[ ] 0.187
12.70
[ ] 0.500
14.22
[ ] 0.560
4.19
[ ] 0.165
14.30
[ ] 0.563
15.42
[ ] 0.607
7.14
[0.281
22.28
[0.877]
23.98
[0.944]
(SEE NOTE 1)
] 12.95
[0.510]
24.49
[0.964]
MAX
21.59
[0.850]
MIN
1.32
[0.052
4.19
[0.165]
]
TLS-LSE
TLS-LSE
Pad Layout
Dimensions are mm (in)
NOTE 1: Measurement taken at end of terminals.
PAD LAYOUT
Solder Mount - LSE Version
TLS-LSA TLS-LSA
Pad Layout
34.30
[1.350]
14.30
[0.563]
15.30
[0.602]
12.70
[0.500]
4.70
[0.185]
20.00
[0.787]
31.16
[1.227]
10.33
[0.407]
28.68
[1.129]
29.19 MAX
[1.149] 26.65 MIN
[1.049]
1.32 REF
[0.052]
2.85
[0.112]
27.08
[1.066]
3.10
[0.122]
1.13
[0.045]
Dimensions are mm (in)
Solder Mount - LSA Version
75
Fuses – Telecom Products
© 2022 Littelfuse, Inc. Littelfuse.com
Telecom Products
4
TLS SERIES TELECOM POWER FUSE
Dimensions
Millimeters [inches]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
Littelfuse® TITLE
DRW DATE
myork 12/29/2020
MATL SPEC UNLESS OTHERWISE SPECIFIED, DBRACKETS [ ] ARE INCHES DIMENSIOTO BE INTERPRETED IN DENOTES CRITICADENOTES CPK DIMDENOTES A CHARAOF PROCESS PERFOAND TRACKING TO LITTELFUSE INSPEDENOTES CP DIMEMUST BE WITHIN TSHOWN ON DRAWALLOW FOR MAXIMCPK
ø
CP
TLS-M CRITICAL CHARACTPAD LAYOUT
REV DATE A 12/29/20 44.20
[1.740]
7.15
[0.282]
9.63
[0.379]
8.75
[0.345]
42.10
[1.6575]
44.70
[1.760]
1.32
[0.052]
4.19
[0.165]
12.95
[0.510]
ø14.30
[ø0.563]
3RD ANGLE
PROJECTION
BLittelfuse
® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 10/16/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SHEET 1 OF 1
SCALE
TLS-LR OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
A 12/20/18 520065GCP - RELEASE MRY
B 11/14/19 521621ECP/D - ADD TOLERANCES MRY
16.84
[0.663]
94]
38.45
[1.514]
]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
B OL-0TLS000LR
Littelfuse
® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 10/16/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SHEET 1 OF 1
SCALE
TLS-LR OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
A 12/20/18 520065GCP - RELEASE MRY
B 11/14/19 521621ECP/D - ADD TOLERANCES MRY
ø 14.27
ø [0.562]
48.76
[1.920]
12.70
[0.500] 16.84
[0.663]
R2.37
[R0.094]
6.77
[0.267]
38.45
[1.514]
4.74
[0.187]
34.41
[1.355]
Solder Mount - MB Version
Bolt-In Mount - LR Version CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-0TLS000V
Littelfuse® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 12/29/2020
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SHEET 1 OF 1
OUTLINE
SCALE
TLS-V SERIES OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
PAD LAYOUT
REVISION
REV DATE DESCRIPTION
9.40 A 12/29/20 523247GCP - RELEASE MRY
[0.370]
REF
32.00
[1.260]
18.78
[0.740]
ø14.30
[ø0.563]
19.30
[0.760] 16.66
[0.656]
12.95
[0.510]
10.41
[0.410]
1.32
[0.052] 2.79
[0.110]
4.19
[0.165]
1.32
[0.052]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-0TLS000V
Littelfuse® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 12/29/2020
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SHEET 1 OF 1
OUTLINE
SCALE
TLS-V SERIES OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
PAD LAYOUT
REVISION
REV DATE DESCRIPTION
9.40 A 12/29/20 523247GCP - RELEASE MRY
[0.370]
REF
32.00
[1.260]
18.78
[0.740]
ø14.30
[ø0.563]
19.30
[0.760] 16.66
[0.656]
12.95
[0.510]
10.41
[0.410]
1.32
[0.052] 2.79
[0.110]
4.19
[0.165]
1.32
[0.052]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-0TLS000V
Littelfuse® REVISION DRWG NO.
TITLE
A
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 12/29/2020
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SHEET 1 OF 1
OUTLINE
SCALE
TLS-V SERIES OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
PAD LAYOUT
REVISION
REV DATE DESCRIPTION
9.40 A 12/29/20 523247GCP - RELEASE MRY
[0.370]
REF
32.00
[1.260]
18.78
[0.740]
ø14.30
[ø0.563]
19.30
[0.760] 16.66
[0.656]
12.95
[0.510]
10.41
[0.410]
1.32
[0.052] 2.79
[0.110]
4.19
[0.165]
1.32
[0.052]
Solder Mount - V Version
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
LittelfuseTITLE
DRW DATE
myork 12/28/202MATL SPEC UNLESS OTHERWISE SPECIFIEBRACKETS [ ] ARE INCHES DIMENTO BE INTERPRETEDDENOTES CRITDENOTES CPK DDENOTES A CHOF PROCESS PEAND TRACKING LITTELFUSE INSDENOTES CP DMUST BE WITHSHOWN ON DRALLOW FOR MACPK
ø
CP
T CRITICAL CHARREV DATE A 12/28/20 40.06
[1.58] 34.72
[1.367]
8.34
[0.329]
0.81
[0.032]
9.69
[0.382]
REF
NOTES:
RECOMMENDED HARDWARE: #8 SLOTTED HEX WASHER HEAD
MACHINE SCREW
TORQUE: 10 IN-LB
ø14.30
[ø0.563]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
Littelfuse® RTITLE
DRW DATE
myork 12/28/2020
MATL SPEC UNLESS OTHERWISE SPECIFIED, DIMENSBRACKETS [ ] ARE INCHES DIMENSIONING TO BE INTERPRETED IN ACCODENOTES CRITICAL CHARDENOTES CPK DIMENSIODENOTES A CHARACTERIOF PROCESS PERFORMANAND TRACKING TO BE DELITTELFUSE INSPECTION DENOTES CP DIMENSIONMUST BE WITHIN THE DISHOWN ON DRAWING ANALLOW FOR MAXIMUM TOCPK
ø
CP
TLS-LB SE CRITICAL CHARACTERISTREVREV DATE A 12/28/20 5240.06
[1.58] 34.72
[1.367]
8.34
[0.329]
0.81
[0.032]
9.69
[0.382]
REF
NOTES:
RECOMMENDED HARDWARE: #8 SLOTTED HEX WASHER HEAD
MACHINE SCREW
TORQUE: 10 IN-LB
ø14.30
[ø0.563]
Bolt-In Mount - LB Version
3RD ANGLE
PROJECTION
Littelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
FINISH GOmyork 10/16/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATIOOF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
ø
CP
SSCALE
TLS-LR OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
REVISION
REV DATE DESCRIPTION
A 12/20/18 520065GCP - RELEASE MRY
B 11/14/19 521621ECP/D - ADD TOLERANCES MRY
ø 14.27
ø [0.562]
48.76
[1.920]
12.70
[0.500] 16.84
[0.663]
R2.37
[R0.094]
6.77
[0.267]
38.45
[1.514]
4.74
[0.187]
34.41
[1.355]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
LittelfuseTITLE
DRW DATE
myork 12/28/202MATL SPEC UNLESS OTHERWISE SPECIFIEBRACKETS [ ] ARE INCHES DIMENTO BE INTERPRETEDENOTES CRITDENOTES CPK DENOTES A CHOF PROCESS PAND TRACKING LITTELFUSE INDENOTES CP DMUST BE WITHSHOWN ON DRALLOW FOR MACPK
ø
CP
T CRITICAL CHARREV DATE A 12/28/20 40.06
[1.58] 34.72
[1.367]
8.34
[0.329]
0.81
[0.032]
9.69
[0.382]
REF
NOTES:
RECOMMENDED HARDWARE: #8 SLOTTED HEX WASHER HEAD
MACHINE SCREW
TORQUE: 10 IN-LB
ø14.30
[ø0.563]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
Littelfuse® TITLE
DRW DATE
myork 12/29/2020
MATL SPEC UNLESS OTHERWISE SPECIFIED, DBRACKETS [ ] ARE INCHES DIMENSIOTO BE INTERPRETED IN DENOTES CRITICADENOTES CPK DIMDENOTES A CHARAOF PROCESS PERFOAND TRACKING TO LITTELFUSE INSPEDENOTES CP DIMEMUST BE WITHIN TSHOWN ON DRAWALLOW FOR MAXIMCPK
ø
CP
TLS-M CRITICAL CHARACTPAD LAYOUT
REV DATE A 12/29/20 44.20
[1.740]
7.15
[0.282]
9.63
[0.379]
8.75
[0.345]
42.10
[1.6575]
44.70
[1.760]
1.32
[0.052]
4.19
[0.165]
12.95
[0.510]
ø14.30
[ø0.563]
76
Fuses – Telecom Products
Littelfuse.com © 2022 Littelfuse, Inc.
Telecom Products
4
481 SERIES ALARM INDICATING FUSES
Alarm Indicating Fuses
481 Series Alarm Indicating Fuses
Description
481 Series alarm indicating fuses are designed to reduce
down time by immediately pinpointing the blown (open)
circuit while triggering an LED or audio alarm. This item
requires 482 Series mating fuse holder.
All ranges of 481 Series fuses are available as our original
design, and the 2-20 amp range is now available as a RoHS
compliant option (use the “P” designator when ordering).
See the part numbering section of the datasheet for related
ordering instructions.
Specifications
Voltage Rating 125 Vac/dc
Approvals UL Recognized (File: E71611)
CSA Recognized (File: LR29862)
Ordering Information
AMPERE RATINGS
18/100 3/8 3/4 1 1/2 3 5 12
1/5 1/2 1 2 3 1/2 7 1/2 15
1/4 65/100 1 1/3 2 1/2 4 10 20
SERIES VOLTAGE AMP CATALOG
NUMBER
ORDERING
NUMBER
481 125 ac/dc 2 481002L 0481002.VXL
Note: For 481 Dummy fuse, order 481000.
Recommended Fuse Holders
482 Series, see website: Littelfuse.com/482
Available 1-20 pole with PCB or panel mounting.
To order with protective lens add suffix XL.
Web Resources
For additional information, visit: Littelfuse.com/481
77
Fuses – Telecom Products
© 2022 Littelfuse, Inc. Littelfuse.com
Telecom Products
4
LTFD 101 SERIES TELECOM DISCONNECT SWITCH
80 Vdc • 1-125 A
Specifications
Voltage Rating 80 Vdc
Ampere Range 1 –125 A
Approvals UL Recognized (File: E122674)
Recommended Fuses
Littelfuse TLS Series fuses ................................................ 52
Description
Littelfuse compact LTFD 101 fuse holders for TLS fuses
are designed for quick installation into telecom equipment
panels. Their modular design fits into spaces originally
designed for circuit breakers and can be front panel
mounted or rear mounted using bullet connectors.
The innovative new pull-out design eliminates the
need for tools to replace fuses and includes an
alarm signaling circuit to identify the blown fuse.
Features
• Extremely compact
• Quick mounting
• Replaces circuit breakers
• Includes alarm signaling circuit
Web Resources
For additional information, visit:
Littelfuse.com/ltfd101
Dimensions for reference only. For additional options and dimensions, contact the factory.
6-32 Insert
0.20 ±.030 Deep
0.75"
(19.05)
2.50"
(63.5)
2.062"
(52.375)
1.940"
(49.276)
2.00"
(50.8)
0.85"
(21.59)
LOAD
LINE
3.625"
(92.08) 0.305" (7.747) Dia.
Bullet Terminal
Alarm pin
0.02" (.508) x 0.11" (2.794)
position optional
C L
Ordering Information
SERIES AMPERAGE CATALOG
NUMBER
ORDERING
NUMBER
TERMINAL
TYPE
LTFD 125 A MAX LTFD101-1 LTFD0101ZX1 BULLET
LTFD 125 A MAX LTFD101-2 LTFD0101ZX2 SCREW
LTFD 125 A MAX LTFD101-3 LTFD0101ZX3 STUD
LTFD 70 A MAX LTFD101-4 LTFD0101ZX4 CLIP
Dimensions Inches (mm)
Littelfuse.com 78 © 2022 Littelfuse, Inc.
SPECIAL PURPOSE FUSES
Table of Contents
Solar Circuit Protection
Littelfuse engineering is constantly
developing new products to meet the
needs of the photovoltaic industry.
For the latest information on the
growing solar product portfolio, visit:
Littelfuse.com/solar
Special Purpose Products Overview .......................................... 78
1500 V dc Solar Rated Fuses...................................................... 79
1000 V dc Solar Rated Fuses...................................................... 89
Forklift / Stud Mounted Fuses .................................................... 92
Plug Fuses................................................................................... 93
MEGA® Bolt-Down Fuses........................................................... 93
In-Line Fuses and Holder............................................................ 94
Cable Limiters ............................................................................. 95
Cylindrical Fuses ......................................................................... 96
OEM Custom Products............................................................... 97
High-Speed Fuses....................................................................... 98
Section Overview
Whether you are protecting solar equipment or finding a replacement
fuse for an aging HVAC unit, Littelfuse carries the breadth of fuses
to meet your needs. Our “special purpose” fuse section includes
application-specific products to meet all of your application needs.
79
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – Solar
Solar Fuses
5
1500 V dc • 1–60 A
SPXV SERIES IN-LINE SOLAR FUSE
Description
The Littelfuse SPXV solar string fuse has been specifically
designed for the protection of photovoltaic (PV) systems.
It is available in multiple ampere ratings to match various
requirements in a range of applications.
Features/Benefits
Offers higher amperage protection in less space for
increased design flexibility Full range, fast-acting fuse helps eliminate common
low-overload faults
Up to 50,000 A interrupting rating
Applications
Inverters
Combiner boxes
Recommended Accessories
1–32 Amperes
Fuse Holder: LFPXV001
Fuse Clips: 125004/125005
35–60 Amperes
Fuse Block and Cover: LFXV15060-BC
Web Resources
Download technical resources at: Littelfuse.com/SPXV
Part Numbering System
Options
Blank = 1–20 A 10 x 85 mm
25–30 A 14 x 85 mm
35–60 A 20 x 127 mm
XM = 25–32 A 10 x 85 mm
SPXV xxx T –
Package Quantity
Series
Ampere Code
T = 10
L = 50
Refer to Ampere Code
Column in Ordering
Information Table
Specifications
Voltage Rating 1500 V dc
Amperage Rating 1, 2, 2.25, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 10, 12,
15, 16, 20, 25, 30, 32, 35, 40, 45, 50, 55, 60 A
Interrupting Rating SPXV 1 A–30 A: 30 kA (50 kA Self-Certified)
SPXV 35 A–60 A: 50 kA
SPXV-M 25 A–32 A: 50 kA
Time Constant ≤ 1ms
Material Body: melamine
Caps: copper alloy (nickel plated)
Approvals cULus (File: E339112)
TUV (Cert: J 50506219)
Applicable Standards UL 248-1, 248-19
IEC 60269-6*
Environmental RoHS Compliant
REACH
Country of Origin Mexico
SERIES AMPERAGE PACKAGE
QUANTITY
CATALOG
NUMBER
ORDERING
NUMBER
SPXV 6 10 SPXV006 SPXV006.T
SPXV 20 50 SPXV020 SPXV020.L
SPXV 32 10 SPXV032-M SPXV032.TXM
SPXV 60 10 SPXV060 SPXV060.T
REACH
*SPXV 25 and 30 amp fuses meet electrical performance only.
80
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – Solar
Solar Fuses
5
SPXV SERIES IN-LINE SOLAR FUSE
SPXV-M Dimensions mm (in)
25–32 A
84.65
(3.333)
84.65
(3.333) 13.72
(0.540)
10.00
(0.394)
10.31
(.406)
127.00
(5.000)
20.65
(
25–30 A
0.813)
35-60A35–60 A
SPXV Dimensions mm (in)
1–20 A
84.65
(3.333)
84.65
(3.333) 13.72
(0.540)
10.00
(0.394)
10.31
(.406)
25–30 A
81
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – Solar
Solar Fuses
5
SPXI SERIES IN-LINE SOLAR FUSES
1500 V dc • 1–60 A
Part Numbering System
Description
The Littelfuse SPXI solar fuse is specifically designed for the
protection of photovoltaic (PV) systems. It integrates into an
in-line assembly within a wire harness and can be electrically
insulted by either overmolding or using heat-shrink.
Littelfuse offers multiple ampere ratings to match specific
requirements in a variety of applications.
Features/Benefits
Offers higher amperage protection in less space for
increased design flexibility
One-piece cap design, without joints, offers easier wire
crimping and more streamlined molding
No fuse holder required helps save space, time, and
money
50,000 A interrupting rating
Applications
Photovoltaic high-capacity homerun, trunk harness, and
wire harness
Options
Refer to Ordering Number
column in Ordering
Information table
SPXI xxx T XB
Package Quantity
Series
Ampere Code
T = 10
L = 50
Refer to Ampere Code
Column in Ordering
Information Table
Web Resources
Download additional technical information and view the
complete solar portfolio: Littelfuse.com/spxi
Recommended Crimping Tool
10-12 AWG: T&B Sta-Kon ERG4002
8 AWG: T&B Sta-Kon ERG4
6 AWG: Burndy MRC840AL
Specifications
Voltage Rating 1500 V dc
Amperage Rating 1, 2, 2.25, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 10, 12, 15,
16, 20, 25, 30, 32, 35, 40, 45, 50, 55, 60 A
Interrupting Ratings SPXI 1–30 A and SPXI-B 1–20 A: 30 kA
SPXI 35–50 A and SPXI-B 35–60 A: 50 kA
SPXI-M and SPXI-BM 25–32A: 50 kA
Time Constant ≤ 1ms
Material Body: melamine
Caps: copper alloy (nickel plated)
Approvals UL Recognized (File: E339112)
TUV (Cert: J 50495785)
Applicable Standards UL 248-1, 248-19
IEC 60269-6 (electrically only)
Environmental RoHS Compliant
REACH
Country of Origin Mexico
US Patent 9,564,281
82
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – Solar
Solar Fuses
5
SPXI SERIES IN-LINE SOLAR FUSES
Dimensions
SERIES AMPS ABCDEF
2.5‐4 81.41 (3.205) 10.31 (0.406) 5.59 (0.22) 12.26 (0.483) 9.53 (0.375) 3.56 (0.14)
4.5‐20 110.06 (4.333) 10.31 (0.406) 5.59 (0.22) 12.26 (0.483) 9.53 (0.375) 3.56 (0.014)
25‐30 110.06 (4.333) 13.72 (0.54) 5.59 (0.22) 12.26 (0.483) 9.53 (0.375) 3.56 (0.014)
35‐50 158.04 (6.222) 20.65 (0.813) 6.7 (0.264) 14.25 (0.561) 10.25 (0.404) 4.7 (0.185)
2.5‐4 85.4 (3.362) 10.31 (0.406) 6.7 (0.264) 14.25 (0.561) 10.25 (0.404) 4.7 (0.185)
4.5‐20 114.05 (4.49) 10.31 (0.406) 6.7 (0.264) 14.25 (0.561) 10.25 (0.404) 4.7 (0.185)
35‐60 163.58 (6.44) 20.65 (0.813) 8.5 (0.335) 17.02 (0.67) 13.72 (0.54) 5.5 (0.217)
SPXI‐M 25‐32 110.06 (4.333) 10.31 (0.406) 5.59 (0.22) 12.26 (0.483) 9.53 (0.375) 3.56 (0.014)
SPXI‐BM 25‐32 114.05 (4.49) 10.31 (0.406) 6.7 (0.264) 14.25 (0.561) 10.25 (0.404) 4.7 (0.185)
ATTENTION MARKETING TEAM EDITING THIS DATASHEET:
Immauel had the following suggestion regarding the formatting of this deminsions table.
Please see the direct comment pasted below from an email I received from Immanuel.
"I am fine with the table starting with the series name, amperage then dimensions. It facilitates differentiating beIf possible the table should have 1 representative dimension across amperages of the same dimension to reduce DIMENSIONS IN MM (INCHES)
SPXI
SPXI‐B
SERIES AMPS
DIMENSIONS IN MM (INCHES) WIRE
A B RANGE C D E F
SPXI
2.5–4 81.41 (3.205) 10.31 (0.406) 5.59 (0.22) 12.26 (0.483) 9.53 (0.375) 3.56 (0.14) 10-12 AWG
(6-4 mm2
)
4.5–20 110.06 (4.333) 10.31 (0.406) 5.59 (0.22) 12.26 (0.483) 9.53 (0.375) 3.56 (0.014) 10-12 AWG
(6-4 mm2
)
25–30 110.06 (4.333) 13.72 (0.54) 5.59 (0.22) 12.26 (0.483) 9.53 (0.375) 3.56 (0.014) 10-12 AWG
(6-4 mm2
)
35–50 158.04 (6.222) 20.65 (0.813) 6.7 (0.264) 14.25 (0.561) 10.25 (0.404) 4.7 (0.185) 8 AWG
(10mm2
)
SPXI-B
2.5–4 85.4 (3.362) 10.31 (0.406) 6.7 (0.264) 14.25 (0.561) 10.25 (0.404) 4.7 (0.185) 8 AWG
(10mm2
)
4.5–20 114.05 (4.49) 10.31 (0.406) 6.7 (0.264) 14.25 (0.561) 10.25 (0.404) 4.7 (0.185) 8 AWG
(10mm2
)
35–60 163.58 (6.44) 20.65 (0.813) 8.5 (0.335) 17.02 (0.67) 13.72 (0.54) 5.5 (0.217) 6 AWG
SPXI-M 25–32 110.06 (4.333) 10.31 (0.406) 5.59 (0.22) 12.26 (0.483) 9.53 (0.375) 3.56 (0.014) 10-12 AWG
(6-4 mm2
)
SPXI-BM 25–32 114.05 (4.49) 10.31 (0.406) 6.7 (0.264) 14.25 (0.561) 10.25 (0.404) 4.7 (0.185) 8 AWG
(10mm2
)
83
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – Solar
Solar Fuses
5
SPNH SERIES SOLAR FUSE
Look for this logo to indicate products that are used in solar applications. Visit our website
Littelfuse.com/solar for the latest updates on approvals, certifications, and new products.
1500 V dc • 50–400 A • NH Style
Description
The SPNH series has been designed to meet the emerging
circuit protection needs for 1500 volt photovoltaic systems.
These fuses provide full range protection for all potential
overcurrent conditions that exist in PV applications. Suitable
for PV inverter protection and array combiner applications.
Features/Benefits
Compact NH XL sizes
Low watt loss design
1500 V dc rating for high efficiency designs Designed to protect against a full range of overcurrents
Applications
Inverters
Re-combiner boxes
Array/Re-combiner application
PV Inverter dc input protection
Web Resources
Download technical documents: Littelfuse.com/spnh
Specifications
Voltage Rating 1500 V dc
Amperage Rating 50, 63, 80, 100, 125, 160, 200, 250, 315,
350, 400 A
Interrupting Rating 30 kA, 50 kA
Time Constant ≤ 2 ms
Material Body: ceramic
End Bells: copper alloy
Approvals UL 248-19 Listed (File: E339112)
Applicable Standards UL 248-1, 248-19
IEC 60269-6
Environmental RoHS Compliant
SERIES AMP PACKAGE
QUANTITY
CATALOG
NUMBER
ORDERING
NUMBER
SPNH 50 1 SPNH050 SPNH050.X
SPNH 200 1 SPNH200 SPNH200.X
SPNH 400 1 SPNH400 SPNH400.XXDLMS
*Solid blade option for 1XL case size does not require a case or termination designator for
the part number.
Part Numbering System
SPNH XXX .X X DL
Series
Amp Code
Package Quantity
X = 1
Case Size*
X = 1XL size
2XL = 2XL size
3L = 3L size
Termination*
Blank = solid blade
w/Microswitch tab
DL = S blade
DE = U blade
DLMS = S blade
w/Microswitch tab
DEMS = U blade
w/Microswitch tab
Refer to Amp Code
Column in Ordering
Information table
Recommended Accessories
1XL Case Size
Fuse Holder: LFNH152001CST
Fuse Terminial Covers: LFNH15200FBC
2XL Case Size
Fuse Holder: LFNH154001CST
Fuse Terminial Covers: LFNH15400FBC
3L Case Size
Fuse Holder: LFNH156301CST
Fuse Terminial Covers: LFNH15630FBC
Microswitch
MSSPNH1500X
84
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – Solar
Solar Fuses
5
Dimensions Millimeters (in)
Size: 1 XL w/ Microswitch Tab
Size: 2 XL w/ Microswitch Tab
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
D OL-SPNH000
Littelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
GRAMS/FINISH GOOD WT
MYORK 10/17/2016
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 SCALE
1500VDC PHOTOVOLTAIC FUSE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 10/18/16 516546GCP - RELEASE MRY
B 6/6/17 517431ECP/D - REMOVE DATA SHEET REVISION MRY
C 2/16/18 518752ECP/B - ADD TOLERANCES MRY
D 10/20/20 522884ECP/C - UPDATE TO NEW CAP DESIGN MRY
126.00
[4.961]
3.00
[0.118]
24.00
[0.945]
192.00
[7.559]
131.20
[5.165]
9.85
[0.388]
51.00
[2.008]
51.00
[2.008]
6.00
[0.236]
DRW DATE
GRAMS/FINISH GOOD WT
MYORK 9/18/2017
MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
NTS
REVISION
REV DATE DESCRIPTION
1 9/18/17 PRELIMINARY DRAWING MRY
126.00
[4.961]
37.00
[1.457]
207
[8.150]
131.2
[5.165]
73.00
[2.874]
73.00
[2.874]
6.00
[0.236]
60.00
[2.362]
Size: 3L
9.85
[.388]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
1 OL-SPNH000.X2Xdatasheet
Littelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
GRAMS/FINISH GOOD WTMYORK 9/18/2017
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 SCALE
1500VDC SIZE 2XL PHOTOVOLTAIC FUSE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
1 9/18/17 PRELIMINARY DRAWING MRY
126.00
[4.961]
30.00
[1.181]
207
[8.150]
131.2
[5.165]
60.00
[2.362]
60.00
[2.362]
6.00
[0.236]
48.00
[1.890]
Size: 2XL
9.85
[.388]
Size: 3 L w/ Microswitch Tab
SPNH SERIES SOLAR FUSE
85
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – Solar
Solar Fuses
5
Dimensions Millimeters (in)
Size: 1XL DL Blade
Recommended Torque: 44 Nm*
Size: 1XL DE Blade
Recommended Torque: 44 Nm*
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
B OL-SPNH000.XLittelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
GRAFINISH GOOD MYORK 10/2/2017
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIOBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLETO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHESCALE
1500VDC SIZE 1XL W/ S-BLADE PHOTOVOLTAIC FUSE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 1/16/18 518725GCP - RELEASE PER EM2929 MRY
B 2/16/18 518848ECP/D - ADD TOLERANCES MRY
126.00
[4.961]
24.00
[0.945]
196.00
[7.717]
131.20
[5.165]
51.00
[2.008]
51.00
[2.008]
6.00
[0.236]
11.00
[0.433]
11.00
[0.433]
162.70
[6.406]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
B OL-SPNLittelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
MYORK 10/2/2017
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETEBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUDENOTES A CHARACTERISTIC THAT PROVIDES AN OF PROCESS PERFORMANCE. PROCEDURE FOR MEAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONSHOWN ON DRAWING AND INITIALLY LOCATED TALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
1500VDC SIZE 1XL W/ U-BLADE PHOTOVOLTAIC FUNTS
REVISION
REV DATE DESCRIPTION
A 1/16/18 518725GCP - RELEASE PER EM2929 B 2/16/18 518848ECP/D - ADD TOLERANCES 126.00
[4.961] 24.00
[0.945]
196.00
[7.717]
131.20
[5.165]
51.00
[2.008]
51.000
[2.008]
6.00
[0.236]
158.40
[6.236]
11.00
[0.433]
(2x)
Size: 2 XL DE Blade
Recommended Torque: 77 Nm*
DRW DATE
GRAMFINISH GOOD MYORK 9/18/2017
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIOBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERTOBEINTERPRETEDINACCORDANCEWITHANSIY145M1994DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
NTS
REVISION
REV DATE DESCRIPTION
1 9/18/17 PRELIMINARY DRAWING MRY
30.00
[1.181]
196
[7.717]
131.2
[5.165]
60.00
[2.362]
60.00
[2.362]
6.00
[0.236]
13.00
[0.512]
13.00
[0.512]
164
[6.457]
Size: 2XL DE
126
[4.961]
*recommended torque values are for grade 8 steel hardware
SPNH SERIES SOLAR FUSE
86
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – Solar
Solar Fuses
5
*recommended torque values are for grade 8 steel hardware
Dimensions Millimeters (in)
Size: 2 XL DL Blade
Recommended Torque: 44 Nm*
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
1 OL-SPNH000.X2XLDL_for
datasheet
Littelfuse
® REVISION DRWG NO.
TITLE
B
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 9/18/2017
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
1500VDC SIZE 2XLW/ S-BLADE PHOTOVOLTAIC FUSE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
1 9/18/17 PRELIMINARY DRAWING MRY
30.00
[1.181]
196
[7.717]
131.2
[5.165]
60.00
[2.362]
60.00
[2.362]
6.00
[0.236]
11.00
[0.433]
11.00
[0.433]
15.00
[0.591]
165
[6.516]
Size: 2XL DL
126
[4.961]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
1 OL-SPNH000.X3LDE_for
datasheet
Littelfuse
® REVISION DRWG NO.
TITLE
B
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 9/18/2017
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
1500VDC SIZE 3L W/ U-BLADE PHOTOVOLTAIC FUSE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
1 9/18/17 PRELIMINARY DRAWING MRY
37.00
[1.457]
196
[7.717]
131.2
[5.165]
73.00
[2.874]
73.00
[2.874]
6.00
[0.236]
13.00
[0.512]
164
[6.457]
13.00
[0.512]
Size: 3L DE
126
[4.961]
Size: 3 L DE Blade
Recommended Torque: 77 Nm*
Size: 3 L DL Blade
Recommended Torque: 44 Nm*
B
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 9/18/2017
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
NTS
REVISION
REV DATE DESCRIPTION
1 9/18/17 PRELIMINARY DRAWING MRY
37.00
[1.457]
196
[7.717]
131.2
[5.165]
73.00
[2.874]
73.00
[2.874]
6.00
[0.236]
11.00
[0.433]
165.5
[6.516]
11.00
[0.433]
Size: 3L DL
126
[4.961]
165.5
SPNH SERIES SOLAR FUSE
87
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – Solar
Solar Fuses
5
Dimensions Millimeters (in)
Size: 1 XL DL Blade w/ Microswitch Tab
Recommended Torque: 44 Nm*
Size: 1 XL DE Blade w/ Microswitch Tab
Recommended Torque: 44 Nm*
Size: 2 XL DL Blade w/ Microswitch Tab
Recommended Torque: 44 Nm*
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
B OL-SPNH0Littelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
MYORK 4/18/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN OF PROCESS PERFORMANCE. PROCEDURE FOR MEAAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
1500VDC SIZE 1XL W/ S-BLADES PHOTOVOLTAIC FUSE WINTERFACE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 6/25/18 519469GCP - RELEASE PER EM3026 B 10/20/20 522884ECP/C - UPDATE TO NEW CAP DES131.20
[5.165]
3.00
[0.118]
24.00
[0.945]
11.00
[0.433]
126.00
[4.961]
162.70
[6.406]
196.00
[7.717]
11.00
[0.433]
9.85
[0.388]
51.00
[2.008]
51.00
[2.008]
6.00
[0.236]
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATIOOF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOWFORMAXIMUMTOOLLIFECPK
CP
REVISION
REV DATE DESCRIPTION
A 6/25/18 519469GCP - RELEASE PER EM3026 MRY
126.00
[4.961]
30.00
[1.181]
196.00
[7.717]
131.20
[5.165]
60.00
[2.362]
60.00
[2.362]
6.00
[0.236]
165.50
[6.516]
11.00
[0.433]
11.00
[0.433]
9.85
[0.388]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
B OL-SPNH0Littelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
MYORK 4/18/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN OF PROCESS PERFORMANCE. PROCEDURE FOR MEAAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
1500VDC SIZE 1XL W/ U-BLADES PHOTOVOLTAIC FUSE WINTERFACE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 6/25/18 519469GCP - RELEASE PER EM3026 B 10/20/20 522884ECP/C - UPDATE TO NEW CAP DES131.20
[5.165] 3.00
[0.118]
126.00
[4.961]
158.40
[6.236]
196.00
[7.717]
11.00
[0.433]
(2x)
24.00
[0.945]
9.85
[0.388]
51.00
[2.008]
51.00
[2.008]
6.00
[0.236]
*recommended torque values are for grade 8 steel hardware
SPNH SERIES SOLAR FUSE
88
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – Solar
Solar Fuses
5
*recommended torque values are for grade 8 steel hardware
Dimensions Millimeters (in)
Size: 2 XL DE Blade w/ Microswitch Tab
Recommended Torque: 77 Nm*
Size: 3 L DL Blade w/ Microswitch Tab
Recommended Torque: 44 Nm*
Size: 3 L DE Blade w/ Microswitch Tab
Recommended Torque: 77 Nm*
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-SPNH.X2XLDEMS
Littelfuse
® REVISION DRWG NO.
TITLE
B
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 4/18/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
1500VDC SIZE 2XL W/ U-BLADE PHOTOVOLTAIC FUSE W/ MICROSWITCH
INTERFACE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 6/25/18 519469GCP - RELEASE PER EM3026 MRY
126.00
[4.961]
30.00
[1.181]
196.00
[7.717]
131.20
[5.165]
60.00
[2.362]
60.00
[2.362]
6.00
[0.236]
164.00
[6.457]
13.00
[0.512]
(2x)
9.85
[0.388]
B
DRW DATE
FINISH GOOD WT
4/18/2018MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
REVISION
REV DATE DESCRIPTION
A 6/25/18 519469GCP - RELEASE PER EM3026 MRY
126.00
[4.961]
131.20
[5.165]
73.00
[2.874]
73.00
[2.874] 164.00
[6.457]
196.00
[7.717]
13.00
[0.512]
(2x)
37.00
[1.457]
6.00
[0.236]
9.85
[0.388]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-SPNH.X3LDLMS
Littelfuse
® REVISION DRWG NO.
TITLE
B
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 4/18/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
1500VDC SIZE 3L W/ S-BLADE PHOTOVOLTAIC FUSE W/ MICROSWITCH
INTERFACE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 6/25/18 519469GCP - RELEASE PER EM3026 MRY
126.00
[4.961]
131.20
[5.165]
73.00
[2.874]
73.00 165 [2.874] .50
[6.516]
196.00
[7.717]
11.00
[0.433]
37.00
[1.457] 11.00
[0.433]
9.85
[0.388]
6.00
[0.236]
MSSPNH1500X
Microswitch
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
Littelfuse® TITLE
DRW DATE
myork 4/24/2018
MATL SPEC UNLESS OTHERWISE SPECIFIED, DIMEBRACKETS [ ] ARE INCHES DIMENSIONINTO BE INTERPRETED IN ACCDENOTES CRITICAL CHADENOTES CPK DIMENSIDENOTES A CHARACTEROF PROCESS PERFORMAAND TRACKING TO BE DLITTELFUSE INSPECTIODENOTES CP DIMENSIOMUST BE WITHIN THE DSHOWN ON DRAWING AALLOW FOR MAXIMUM CPK
CP
SPNH MICROREREV DATE A 6/25/18 51953951.00
[2.008]
31.90
[1.256]
NOTES:
RATED CURRENT: ~5A
RATED VOLTAGE: ~125V-~250V
51.00
[2.008]
31.90
[1.256]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-SPNH.X2XLDEMS
Littelfuse
® REVISION DRWG NO.
TITLE
B
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 4/18/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
1500VDC SIZE 2XL W/ U-BLADE PHOTOVOLTAIC FUSE W/ MICROSWITCH
INTERFACE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 6/25/18 519469GCP - RELEASE PER EM3026 MRY
126.00
[4.961]
30.00
[1.181]
196.00
[7.717]
131.20
[5.165]
60.00
[2.362]
60.00
[2.362]
6.00
[0.236]
164.00
[6.457]
13.00
[0.512]
(2x)
9.85
[0.388]
B
DRW DATE
FINISH GOOD WT
4/18/2018MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
REVISION
REV DATE DESCRIPTION
A 6/25/18 519469GCP - RELEASE PER EM3026 MRY
126.00
[4.961]
131.20
[5.165]
73.00
[2.874]
73.00
[2.874] 164.00
[6.457]
196.00
[7.717]
13.00
[0.512]
(2x)
37.00
[1.457]
6.00
[0.236]
9.85
[0.388]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-SPNH.X3LDLMS
Littelfuse
® REVISION DRWG NO.
TITLE
B
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 4/18/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
1500VDC SIZE 3L W/ S-BLADE PHOTOVOLTAIC FUSE W/ MICROSWITCH
INTERFACE OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 6/25/18 519469GCP - RELEASE PER EM3026 MRY
126.00
[4.961]
131.20
[5.165]
73.00
[2.874]
73.00 165 [2.874] .50
[6.516]
196.00
[7.717]
11.00
[0.433]
37.00
[1.457] 11.00
[0.433]
9.85
[0.388]
6.00
[0.236]
SPNH SERIES SOLAR FUSE
89
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – Solar
Solar Fuses
5
SPFI SERIES IN-LINE SOLAR FUSE
1000 Vdc • 2-30 A REACH
Description
The Littelfuse SPFI solar fuse is designed to integrate into
an in-line assembly within a wire harness. It has been
specifically engineered to protect photovoltaic (PV) systems
meeting UL 248-19 standards. The SPFI can be electrically
insulated by either overmolding or using heat-shrink.
Features/Benefits
One-piece cap design, without joints, offers easier wire
crimping and more streamlined molding No fuse holder required helps save space, time, and
money
20,000 A Interrupting Rating
Applications
Photovoltaic wire harness
Dimensions mm (in)
63.50
(2.50)
12.26
(0.483)
Typ. 2 5.59
(0.22)
Typ. 2
10.31
(0.406)
Typ. 2
9.53
(0.375)
Typ. 2
ø 3.56
(0.140)
Specifications
Voltage Rating 1000 V dc
Amperage Rating 2, 2.5, 3, 3.5, 4, 5, 6,
8, 10, 12, 15, 20, 25, 30 A
Interrupting Rating 20 kA
Time Constant ≤ 1ms
Material Body: Melamine
Caps: Copper Alloy (Nickel Plated)
Approvals UL 248-19 Recognized (File: E339112)
TUV (Cert: J 50505290)
Applicable Standards UL 248-1, 248-19
IEC 60269-6 (electrically only)
Environmental RoHS Compliant
REACH
Country of Origin Mexico
US Patent 9,564,281
Part Numbering System
SPFI xxx T
Package Quantity
Series
Amp Code
T = 10
L = 50
Refer to Amp Code Column in
Ordering Information Table
Web Resources
Downloadable CAD drawings and other technical
information: littelfuse.com/SPFI
Recommended Crimping Tool
T&B Sta-Kon ERG4002
90
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – Solar
Solar Fuses
5
SPF SERIES SOLAR FUSES
1000 Vdc • 1-30 A
Look for this logo to indicate products that are used in solar applications. Visit our website
Littelfuse.com/solar for the latest updates on approvals, certifications, and new products.
Description
The SPF Solar Protection Fuse series has been specifically
designed for the protection of photovoltaic (PV) systems.
This family of midget-style fuses (10 x 38 mm) can safely
protect PV modules and conductors from reverseovercurrent conditions.
As PV systems have grown in size, so have the
corresponding voltage requirements. This increase in
system voltage has typically been intended to minimize
power loss associated with long conductor runs. Standard
circuit protection devices are not designed to completely
protect photovoltaic panels. However, the SPF series is
UL Listed to safely interrupt faulted circuits up to this
demanding voltage level.
Littelfuse offers multiple ampere ratings to match specific
requirements in a variety of applications.
Features/Benefits
Full range, fast-acting fuse helps eliminate common lowoverload faults
Prevents power generation losses due to nuisance tripping
from changes in temperature
Both PCB mount and dead-front holder options available
Applications
Inverters
Combiner boxes
Battery charge controllers
Recommended Accessories
Fuse Holder: LPHV 1000 V dc POWR-Safe Series
Fuse Clips: 125004/125005
Web Resources
Download technical documents: Littelfuse.com/SPF
Specifications
Voltage Rating 1000 V dc
Amperage Rating 1, 2, 3, 3.5, 4, 5, 6, 8, 10, 12, 15, 20, 25, 30
Max. Interrupting Rating 20 kA - 1 A - 20 A
50 kA - 25 A - 30 A
Time Constant ≤ 2ms
Material Body: Melamine
Caps: Copper Alloy
Approvals UL Listed (File: E339112)
CSA Certified (File: 029862_0_000)
TUV (Cert: J 50494849)
Applicable Standards UL 248-1, 248-19
IEC 60269-6
Environmental RoHS Compliant
Country of Origin Mexico
Part Numbering System
0SPF xxxx H XR
Package Quantity
Series Mounting Options
Amp Code
T = 10 Fuses
H = 100 Fuses
Refer to Ordering
Information table
Blank = Ferrule
XR = PCB
Dimensions Inches (mm)
Ferrule Version PCB Version
0.06 REF
(1.524)
0.140 REF (3.56)
0.012 REF (0.292)
1.570 MAX
(39.88)
1.490 MIN
(37.84)
1.570 (39.88) MAX
1.490 (37.84) MIN
0.040±0.001
(1.02±.025)
0.50 REF
(12.70) 0.12±0.005
(3.05±0.13)
0.12±0.005
(3.05±0.13)
MOUNTING HOLE
DETAIL
0.28±0.005
(7.11±0.13)
1.5 (38.1)
.406
(10.31)
.378
(9.60)
±.031
(±.79)
0.406±0.004
(10.31±0.10)
REACH
91
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – Solar
Solar Fuses
5
Look for this logo to indicate products that are used in solar applications. Visit our website
Littelfuse.com/solar for the latest updates on approvals, certifications, and new products.
SPFJ SERIES SOLAR FUSES
1000 V dc • 70–450 A • Full Range • Solar-Rated
Description
The SPFJ series is the smallest 1000 V dc 70–450 A dc
full range fuse available in the market. The SPFJ series
is manufactured in Class J case sizes and is suitable for
photovoltaic, dc cable protection, EV off-board charging and
other dc applications that allow for both fuse holder and
busbar mounting configurations. The SPFJ meets both UL
and IEC requirements.
Features & Benefits
• Higher amperage capacity in standard sizes for more
protection in a smaller space
• Full range over-current protection capability, suitable for
dc cable protection
• Small footprint offers design flexibility and reduces
panel size requirements
• Fuse holder or bus bar mountings available for
added versatility
Applications
• Inverters
• Re-combiner boxes
• Dc cable protection
• EV off-board (dc fast) chargers
Recommended Fuse Holder
LFJ1000 Solar Series
Web Resources
Download technical documents: Littelfuse.com/SPFJ
Specifications
Voltage Rating 1000 V dc
600 V ac (125–450 A)
Amperage Rating 70–450 A
Interrupting Rating Ac: 200 kAIC (125–450 A)
Dc: 70–200 A: 20 kAIC
250–400 A: 10 kAIC
450 A: 20 kAIC
Time Constant ≤ 1ms
Material Body: Melamine
End Bells: Copper Alloy
Approvals cULus (File:E339112),
VDE (Cert No. 40033659)**
Applicable Standards UL 248-1, UL 248-8, UL 248-19,
IEC 60269-6
Environmental RoHS Compliant
Country of Origin Mexico
Dimensions Inches (mm)
A
B
C
F E
D
G
SERIES AMP PACKAGE
QUANTITY
CATALOG
NUMBER
ORDERING
NUMBER
SPFJ 70 1 SPFJ070 SPFJ070.X
SPFJ 200 1 SPFJ200 SPFJ200.XXL
Part Numbering System
SPFJ xxx X —
Package Quantity
Series Mounting Options
Amp Code
X = 1
Blank = Std. Class J dimensions
XL = 8.5 mm slot (125−200 A only) Refer to Amp Code
column in electrical
specifications table
AMPERAGE DIMENSIONS IN INCHES (MM)
A B C D E F G
70–100 3.02 (76.5) 4.38 (111.3) 5.75 (146.1) 1.5 (38.1) 1.125 (28.3) .335 (8.5) .189 (4.8)
125–200 3.02 (76.5) 4.38 (111.3) 5.75 (146.1) 1.5 (38.1) 1.125 (28.3) .281 (7.1)* .189 (4.8)
250–400 3.37 (85.7) 5.25 (133.4) 7.125 (181.0) 2.0 (50.8) 1.63 (41.3) .406 (10.3) .252 (6.4)
450 3.75 (95.3) 5.98 (152.0) 8.0 (203.2) 2.5 (63.5) 2.0 (50.8) .531 (13.5) .374 (9.5)
** Refer to Ordering Information table
* SPFJ L option = .330 (8.5)
Littelfuse.com 92 © 2022 Littelfuse, Inc.
5
Fuses — Special Purpose
Ordering Information
3.18"
(80.8) 0.343"
(8.7)
2.43"
(61.7)
Applications
Lift trucks, scissor lifts, pallet movers, and other
low voltage battery operated equipment used to
move hazardous materials.
Features/Benefits
• Evaluated for use in UL 583 hazardous applications
• Easily upgrade Type E and ES equipment to Type EE
• Does not require an external enclosure
Specifications
Voltage Ratings 48 Vac/dc
Interrupting Rating 2,500 A
Ampere Rating 35 – 800 A
Approval UL Recognized (File: E71611)
Torque 90 in-lb
Fuse Holder LFFB003
Environmental RoHS Compliant
Country of Origin Mexico
CNN_E, CNN & CNL Limiter Fuses
Description
CNN_E fuses are rated for applications up to 80 Vdc.
As fork lift trucks voltages increase, circuit protection needs to
be rated higher than the standard CNN products to handle the
increased voltage. The CNN_E is considered very fast-acting
for quicker reaction time.
Specifications
Voltage Ratings CNN_E: 80 Vdc / 125 Vac
CNN: 48 Vdc / 125 Vac
CNL: 32 Vdc / 32 Vac
Ampere Ratings 10 – 800 A*
Max. Interrupting Rating 2,500 A
Approval UL Recognized (File: E71611)
Environmental RoHS Compliant, Lead (Pb) Free
Country of Origin Mexico (CNN_E only)
*See ordering information table for available amperages by series
†
CNN Series only
FORK-LIFT STUD-MOUNTED FUSES
32/48/80 Vdc • Fast-Acting and Very Fast-Acting • 35-800 A
Recommended Fuse Holders
LFFB0003Z...................................................................... 123
Web Resources
Littelfuse.com/ForkLift
Dimensions
AMPERE RATINGS
35 100 250 500
50 125 300 750*
60 150 400 800*
90 200 425 —
Ordering Information
SERIES AMPERAGE CATALOG NUMBER ORDERING NUMBER
581 200 581200 0581200.X *Contact factory for availability
HAZGARD™ Forklift Fuses
Description
HAZGARD fuses are designed to provide overcurrent protection
for low voltage equipment used in hazardous operations. It
is UL 248 recognized and has been evaluated for the use in
UL 583 type EE and ES applications. Unique design does not
require an additional enclosure as is needed with a standard
forklift fuse, saving assembly time and costs.
AMPERE RATINGS CNN_E & CNN
10† 60 125 225 325 600
35 80 150 250 350 700
40 90 175 275 400 800
50 100 200 300 500 —
AMPERE RATINGS CNL (32 Vdc)
35 80 150 250 350
40 100 175 275 400
50 125 200 300 500
60 130 225 325 —
SERIES TYPE VOLT
DC AMP CATALOG
NUMBER
ORDERING
NUMBER
CNN_E VERY-FAST-ACTING 80 200 CNN200E 0CNN200E.V
CNN VERY FAST-ACTING 48 125 CNN125 0CNN125.V
CNL FAST-ACTING 32 50 CNL050 0CNL050.V
Special Purpose Fuses
93
Fuses — Special Purpose
© 2022 Littelfuse, Inc. Littelfuse.com
5Special Purpose Fuses
Specifications
Voltage Rating 32 Vac/dc
Interrupting Rating 2000 A @ 32 Vdc
Ordering Information
CATALOG
NUMBER
ORDERING
NUMBER
AMPERAGE
RATING
VOLTAGE
RATING
COLOR
CODE
MEG100 0MEG100.X 100 32
MEG125 0MEG125.X 125 32
MEG150 0MEG150.X 150 32
MEG175 0MEG175.X 175 32
MEG200 0MEG200.X 200 32
MEG225 0MEG225.X 225 32
MEG250 0MEG250.X 250 32
MEG300 0MEG300.X 300 32
PLUG FUSES AND BOLT-DOWN FUSES
125 Vac • 2-30 A
TOO fuses are dual-element time-delay Edison-base fuses
designed for motor and motor branch circuit protection; also
suitable for all general purpose circuits.
TOO Fuses Sample Part # 0TOO020.Z
Edison-base plug fuses
Description
Littelfuse plug fuses provide overcurrent protection to general
purpose circuits and small motor loads. Edison-base plug
fuses (TOO and TLO series) feature metal threads similar to
incandescent lamp bases.
Type S plug fuses (SOO and SLO series) utilize a
nonmetallic threaded base and must be used with Type S
adapters (SAO series).
The National Electrical Code® permits Edison base plug fuses
to be used for replacement purposes only. Type S fuses and
adapters prevent shunting open fuses and over-fusing.
TLO fuses are medium time-delay Edison-base fuses
designed for general purpose branch circuit protection.
TLO Fuses Sample Part # 0TLO020.Z
AMPERE RATINGS
2 6 1/4 12 25
4 8 15 30
5 10 20 —
MEGA® SLO-BLO® bolt-on fuse
Description
The MEGA Fuse is designed for the protection of high
current applications. Designed and patented by Littelfuse, it
is ideal for battery and alternator protection and other heavy
gauge cable applications.
Recommended Fuse Holders
Part Number - 298900, see website: Littelfuse.com/mega
Web Resources
Find more information: Littelfuse.com/mega
AMPERE RATINGS
15 20 25 30
Specifications
Voltage Rating 125 Vac
Interrupting Rating 10 kA rms symmetrical
Approvals UL Listed 248-11
32 Vac/dc • 100-300 A
Web Resources
Fine more information: Littelfuse.com/plug
Littelfuse.com 94 © 2022 Littelfuse, Inc.
5
Fuses — Special Purpose
In-Line Fuses
LGR / LMF IN-LINE FUSES & LHR FUSE HOLDER
Specifications
Voltage Rating 300 Vac
Interrupting Rating 10 kA
Approvals Standard 248-14
UL Listed (File: E10480)
CSA Certified (File: LR29862)
Ordering Information
LGR Fuses
Fast-Acting • 300 Vac
Used as in-line protection
for fluorescent fixtures, this
fast-acting fuse is ideal for
increasing the safety and
reliability of lighting fixtures.
LMF Fuses
Time-Delay • 300 Vac
Perfect for use in lighting
systems, this 300 Vac timedelay fuse is designed to
handle ballast transformer
in-rush currents.
LHR Fuse Holder
Used as in-line protection
for fluorescent fixtures, the
Littelfuse LGR and LMF
series fuses and LHR holder
offer increased safety and
reliability to lighting systems.
By individually fusing fixtures,
electrical problems are
isolated from the rest of the
circuit. The added benefits of
this is the ability to quickly
identify the problem fixture
and reduce the repair time.
Fuse holders are rated up to 10 amperes at 300 volts and are
equipped with 7" 18 AWG leads. Order part number LHR000
for two leads, and part number LHR001 for one lead; with the
other terminal used for insertion of 18 AWG ballast lead.
Specifications
Voltage Rating 300 Vac
Ampere Rating LHR000 10 A
LHR001 10 A
Approvals UL Recognized
CSA Certified
(File: 73160)
Flammability Rating UL94 V-0
Example part number LHR001
Ordering number 0LHR001T
Mounting Information
LHR001/LHR000 will fit keyhole
punch or 0.875" knock-out hole.
Anti-rotation feature is provided
when used with keyhole punch.
A “U-shaped” clip is available
for panel mounting (packaged
10 clips per bag): Order part
number LHROCA.
Specifications
Voltage Rating 300 Vac
Interrupting Rating 10 kA
Approvals Standard 248-14
UL Listed (File: E10480)
CSA Certified (File: LR29862)
Ordering Information
AMPERE RATINGS 1/2 1 6/10 3 6 9 15
1 2 4 7 10 —
1 1/2 2 1/2 5 8 12 —
AMPERE RATINGS 3/10 8/10 1 6/10 2 8/10 4 7
1/2 1 2 3 5 8
6/10 1 1/4 2 1/2 3 2/10 6 1/4 10
SERIES AMPERAGE CATALOG NUMBER ORDERING NUMBER
LGR 5 LGR005 0LGR005.V
SERIES AMPERAGE CATALOG NUMBER ORDERING NUMBER
LMF 5 LMF005 0LMF005.V
1.82"
0.610"
1.82"
0.610"
2.25" 7/8"
3/4"
0.263"
0.423"
0.630"
Knock-out Hole Keyhole Punch
0.50"
0.50"
1.82"
0.610"
1.82"
0.610"
2.25" 7/8"
3/4"
0.263"
0.423"
0.630"
Knock-out Hole Keyhole Punch
0.50"
0.50"
1.82"
0.610"
2.25" 7/8"
3/4"
0.423"
Knock-out Hole Keyhole Pu0.50"
0.50"
2.25" 7/8"
3/4"
0.263"
0.423"
0.630"
Knock-out Hole Keyhole Punch
0.50"
0.50"
Keyhole Punch
Knock-out Hole
2.25" 7/83/4"
Knock-o0.50"
0.50"
95
Fuses — Special Purpose
© 2022 Littelfuse, Inc. Littelfuse.com
5
LFCL • CABLE LIMITERS
250/600 VAC
TYPE TERMINATION VOLTAGE
RATING
COPPER
CABLE SIZE
ORDERING
NUMBER
1 CABLE TO CABLE
600 VAC 4 AWG LFCL0004ZC1
600 VAC 3 AWG LFCL0003ZC1
600 VAC 2 AWG LFCL0002ZC1
600 VAC 1 AWG LFCL0001ZC1
600 VAC 1/0 AWG LFCL01/0ZC1
600 VAC 2/0 AWG LFCL02/0ZC1
600 VAC 3/0 AWG LFCL03/0ZC1
600 VAC 4/0 AWG LFCL04/0ZC1
600 VAC 250 kcmil LFCL0250ZC1
600 VAC 350 kcmil LFCL0350ZC1
600 VAC 500 kcmil LFCL0500ZC1
600 VAC 600 kcmil LFCL0600ZC1
600 VAC 750 kcmil LFCL0750ZC1
600 VAC 1000 kcmil LFCL1000ZC1
3 CABLE TO
OFFSET BUS
600 VAC 12 AWG LFCL0012ZC3
600 VAC 10 AWG LFCL0010ZC3
600 VAC 6 AWG LFCL0006ZC3
600 VAC 4 AWG LFCL0004ZC3
600 VAC 2 AWG LFCL0002ZC3
600 VAC 1 AWG LFCL0001ZC3
600 VAC 1/0 AWG LFCL01/0ZC3
600 VAC 2/0 AWG LFCL02/0ZC3
600 VAC 3/0 AWG LFCL03/0ZC3
600 VAC 4/0 AWG LFCL04/0ZC3
600 VAC 250 kcmil LFCL0250ZC3
600 VAC 350 kcmil LFCL0350ZC3
600 VAC 500 kcmil LFCL0500ZC3
600 VAC 600 kcmil LFCL0600ZC3
600 VAC 750 kcmil LFCL0750ZC3
5 STRAIGHT BUS
TO OFFSET BUS
250 VAC 2/0 & 3/0 AWG LFCL-UHA*
250 VAC 3/0 AWG LFCL-UHJ-M*
250 VAC 350 kcmil LFCL-UHJ-T*
250 VAC 600 kcmil LFCL-UHJ-W*
600 VAC 4/0 AWG LFCL04/0ZC5*
600 VAC 250 kcmil LFCL0250ZC5*
600 VAC 350 kcmil LFCL0350ZC5*
600 VAC 500 kcmil LFCL0500ZC5*
600 VAC 750 kcmil LFCL0750ZC5*
6
MOLE TO CABLE
600 VAC 4/0 AWG LFCL04/0ZC6
600 VAC 250 kcmil LFCL0250ZC6
600 VAC 500 kcmil LFCL0500ZC6
*Suitable for use with aluminum cables / conductors. For sizing contact Tech-Line at
800-TEC-FUSE.
Web Resources
For additional information, see website:
Littelfuse.com/lfcl
Description
Cable limiters are fusible devices that provide very fast
short-circuit protection, primarily to faulted cables, but also to
other conductors such as busway. Cable limiters do not have
an ampere rating, and cannot be used to provide overload
protection. They are instead selected by cable size; for example,
a 500 kcmil cable requires a 500 kcmil cable limiter. Their
main use is to isolate faulted cables in circuits containing
three or more parallel conductors per phase. They may be
installed on the line side of the main service to provide shortcircuit protection to the service conductors. This is especially
important when service conductors are tapped from large low
voltage networks or from large low impedance transformers.
Cable limiters have terminals which permit them to be installed
in a variety of equipment. The most common configuration is
the offset blade on one end and the crimp terminal on the other
end. This permits the limiter to replace a cable terminal (lug).
Applications
• Service Entrance Conductors
• Between Transformer or network bus and bus-way
terminal boxes as secondary ties.
• Feeders with three or more conductors per phase to
share heavier load in large commercial and industrial
installations
• Multiple Single conductor services, tapped from single
(utility) transformer in multi-family residential and small
commercial installations.
Features
• Current-limiting characteristics provide protection to
conductor insulation and reduce damage when faults occur.
• Properly applied cable limiters may permit the use of
equipment with reduced withstand ratings
• Wide variety of terminations and cable ratings permit use
in almost every situation.
Specifications
Voltage Ratings 250 VAC, 600 VAC
Interrupting Rating 100 kA (250 VAC), 200 kA (600 VAC)
Cable Size Range 12 AWG – 1000Kcmil Copper
Approvals Contact Tech-Line at 800-TEC-FUSE
Recommended
Installation Tool Make: Thomas & Betts
Crimp Tool: TBM14_, TBM15_
Cable Limiters
Littelfuse.com 96 © 2022 Littelfuse, Inc.
5
Fuses — Special Purpose
Dimensions
Web Resources
For additional product information
Fuses: Littelfuse.com/cy
Fuse Holders: Littelfuse.com/lfpsm
Littelfuse.com/cyh
AMPERAGE gL-gG ORDERING NUMBERS aM ORDERING NUMBERS
10 X 38 14 X 51 22 X 58 10 X 38 14 X 51 22 X 58
0.5 CY10X38G05 — — CY10X38M05 — —
1 CY10X38G1 — — CY10X38M1 — —
2 CY10X38G2 CY14X51G2 — CY10X38M2 CY14X51M2 —
4 CY10X38G4 CY14X51G4 — CY10X38M4 CY14X51M4 —
6 CY10X38G6 CY14X51G6 — CY10X38M6 CY14X51M6 —
8 CY10X38G8 CY14X51G8 — CY10X38M8 CY14X51M8 —
10 CY10X38G10 CY14X51G10 — CY10X38M10 CY14X51M10 —
12 CY10X38G12 CY14X51G12 — CY10X38M12 CY14X51M12 —
16 CY10X38G16 CY14X51G16 CY22X58G16 CY10X38M16 CY14X51M16 CY22X58M16
20 CY10X38G20 CY14X51G20 CY22X58G20 CY10X38M20 CY14X51M20 CY22X58M20
25 CY10X38G25 CY14X51G25 CY22X58G25 CY10X38M25 CY14X51M25 CY22X58M25
32 CY10X38G32 CY14X51G32 CY22X58G32 CY10X38M32 CY14X51M32 CY22X58M32
40 — CY14X51G40 CY22X58G40 — CY14X51M40 CY22X58M40
50 — CY14X51G50 CY22X58G50 — CY14X51M50 CY22X58M50
63 — — CY22X58G63 — — CY22X58M63
80 — — CY22X58G80 — — CY22X58M80
100 — — CY22X58G100 — — CY22X58M100
FUSE SIZE DIMENSIONS mm
A B
10 X 38 10 38
14 X 51 14 51
22 X 58 22 58
Fuse Holders
AMP
RATING POLES SIZE CATALOG /
ORDERING #
TERMINAL
TYPE
DIN RAIL
MOUNT
32 A 1 10 X 38 LFPSM0001Z Pressure Plate •
32 A 2 10 X 38 LFPSM0002Z Pressure Plate •
32 A 3 10 X 38 LFPSM0003Z Pressure Plate •
32 A 4 10 X 38 LFPSM0004Z Pressure Plate •
32 A 1 10 X 38 LFPSM0001ZXID* Pressure Plate •
32 A 2 10 X 38 LFPSM0002ZXID* Pressure Plate •
32 A 3 10 X 38 LFPSM0003ZXID* Pressure Plate •
32 A 4 10 X 38 LFPSM0004ZXID* Pressure Plate •
50 A 1 14 X 51 CYH14511 Pressure Plate •
50 A 2 14 X 51 CYH14512 Pressure Plate •
50 A 3 14 X 51 CYH14513 Pressure Plate •
100 A 1 22 X 58 CYH22581 Pressure Plate •
100 A 2 22 X 58 CYH22582 Pressure Plate •
100 A 3 22 X 58 CYH22583 Pressure Plate •
* Indicating
CYLINDRICAL FUSES
500 Volts • 0.5-100 A
Description
Littelfuse fast acting (gL-gG) fuses are used for the
protection of cables against short-circuits. Time-lag (aM)
fuses are used for protection of motors.
Specifications
Standards 10x38 mm: IEC 60269
14x51 mm / 22x58mm: IEC 269-2-1
Ordering Information
BASE PART
NUMBER
SIZE
(mm)
CURRENT
RANGE VOLTAGE (AC) INTERRUPTING
RATING
CY10X38 10 x 38
0.5-16 A 500 V 120 kA
20-25 A (aM) 400 V 120 kA
20-25 A (gL-gG) 500 V 120 kA
32 A 400 V 120 kA
CY14X51 14 x 51
2-25 A 690 V 80 kA
32-40 A 500 V 120 kA
50 A 400 V 120 kA
CY22X58 22 x 58 16-63 A 690 V 80 kA
80-100 A 500 V 120 kA
Cylindrical Fuses
97
Fuses — Special Purpose
© 2022 Littelfuse, Inc. Littelfuse.com
5
OEM CUSTOM PRODUCTS
Two-Pole Combination Block
Save space and money by combining multiple
components in one unit. Littelfuse collaborated with the
customer to develop a cost effective UL listed component
that combined a 600 Volt 100A two-pole Class T fuse
block with a two-openings-per-pole splicer block.
Examples
Custom-Leaded Fuse
Save space and reduce cost by eliminating the fuse
block component. Littelfuse designed a series of custom
through-hole PC-board mountable KLKD Midget fuses for
a consumer application where reduced cost was more
important than replaceability.
Description
We understand that existing solutions don’t always solve
your current problems. Building on 90 years of circuit
protection experience, the Littelfuse engineering team
collaborates with customers to develop customized
solutions for applications such as solar panels, HVAC
systems, lift trucks, lighting fixtures, industrial restaurant
equipment and power converters.
Process
The custom product design process begins with a situation
analysis from our experienced engineers followed by our
4-step collaborative product development process.
1. Initial concept sketch created
2. CAD drawings to formalize the product description
3. 3D solid prototype to verify design
4. Final production parts that meet your design needs
and specifications
Additional Customized Products
HAZGARD Fork Lift Fuse ..............................................64
Web Resources
To learn more and contact our OEM team, visit:
Littelfuse.com/industrialoem
To speak with a sales associate regarding your application needs,
call 800-TEC-FUSE (800-382-3873) or email techline@Littelfuse.com.
1
3
2
4
OEM Custom Products
Littelfuse.com 98 © 2022 Littelfuse, Inc.
High-Speed Square Body Fuses.................................................. 99
MS Series High-Speed Fuse Microswitch................................. 120
High-Speed Round-Body Fuses ................................................ 122
Traditional High-Speed Fuses .................................................... 128
Table of Contents
HIGH-SPEED FUSES
Section Overview
Littelfuse high-speed fuses protect critical power semiconductors
against short circuits in applications including inverters, variablespeed drives, UPS and DC drive systems.
For the complete portfolio of high-speed products visit:
Littelfuse.com/High-Speed
POWR-Speed® High-Speed
Circuit Protection
Littelfuse engineering is constantly developing
new products to meet the needs of the industry.
For the latest information on the growing
POWR-Speed product portfolio, visit:
Littelfuse.com/High-Speed
99
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
PSX SERIES HIGH-SPEED SQUARE BODY FUSES
Specifications
Voltage Rating Dc: 1500 V
Amperage Rating 80 A–1400 A
Interrupting Rating Dc: 250 kA
Time Constant 1XL: = 3 ms
3XL: = 5 ms
Microswitch Yes
Mounting Bolted-blade style, DIN-blade style,
Metric flush-end style
Material Body: ceramic
Contacts: plated copper (bladed)
plated brass (flush end)
Approvals cURus Recognized (File: E71611)
Applicable Standards UL 248-13, IEC 60269-7
Environmental RoHS Compliant, REACH
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to +35 °C with relative humidity <65 %
Country of Origin Mexico
Ordering Part Number
PSX 3XL UB 1400 X
Termination
UB = bolted blade
DB = DIN blade
FL = flush-metric
Case Size
1XL, 3XL
Series
Packing Quantity
X = (1 pc/box)
Amperage
Catalog Number
SERIES CASE
SIZE TERMINATION AMPERAGE CATALOG
NUMBER
ORDERING
PART NUMBER
PSX 3XL UB 1400 PSX3XLUB1400 PSX3XLUB1400X
Recommended Accessories
Microswitch: MSXL2000C
Web Resources
Download technical documents: Littelfuse.com/PSX
Battery Protection Fuses • 1500 V Dc Class aBat • 80 A–1400 A
Description
Littelfuse PSX series 1500 V dc high-speed square body
fuses are specially designed to protect battery energy
storage systems (BESS), photovoltaic inverters, and many
dc applications such as dc common bus systems, larger
industrial regenerative drives, rectifiers and metal processing
equipment.
The PSX series fuses are extremely fast-acting, offering
high-speed performance up to 1500 V dc, ranging from
80 A to 1400 A in the smallest NH XL package sizes. The
PSX series is available with multiple mounting terminations
including flush-end, DIN, and bolted-blade styles. Visual
blown fuse indication is standard on all fuses and optional
micro-switch is available for external indication.
The PSX series is certified to UL248-13 and designed to
meet IEC 60269-7 (Class aBat) battery protection fuse
standard.
Features/Benefits
High dc voltage rating up to 1500 V dc
Dc interrupting rating is 250 kA
Extremely fast acting for high speed performance
Low watt loss provides energy efficiency for BESS
applications
Compact NH 1XL and 3XL sizes offer flexibility
Applications
Battery energy storage systems (BESSs)
Power conversion systems
Dc common bus systems
Hybrid PV-BESS inverters
Regenerative drives
Industrial heaters and welding equipment
Metal processing equipment
100
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
PSX SERIES HIGH-SPEED SQUARE BODY FUSES
Electrical Characteristics
Ordering Information
CASE
SIZE
FLUSH METRIC (FL) BOLTED BLADE (UB) DIN BLADE (DB) BOX
QUANTITY CATALOG
NUMBER
ORDERING PART
NUMBER UPC CATALOG
NUMBER
ORDERING PART
NUMBER UPC CATALOG
NUMBER
ORDERING PART
NUMBER UPC
NH 1XL
PSX1XLFL0080 PSX1XLFL0080X 07945825798 PSX1XLUB0080 PSX1XLUB0080X 07945825819 PSX1XLDB0080 PSX1XLDB0080X 07945826320 1 pc/box
PSX1XLFL0100 PSX1XLFL0100X 07945825799 PSX1XLUB0100 PSX1XLUB0100X 07945825820 PSX1XLDB0100 PSX1XLDB0100X 07945826321 1 pc/box
PSX1XLFL0125 PSX1XLFL0125X 07945825800 PSX1XLUB0125 PSX1XLUB0125X 07945825821 PSX1XLDB0125 PSX1XLDB0125X 07945826322 1 pc/box
PSX1XLFL0160 PSX1XLFL0160X 07945825801 PSX1XLUB0160 PSX1XLUB0160X 07945825822 PSX1XLDB0160 PSX1XLDB0160X 07945826323 1 pc/box
PSX1XLFL0200 PSX1XLFL0200X 07945825802 PSX1XLUB0200 PSX1XLUB0200X 07945825823 PSX1XLDB0200 PSX1XLDB0200X 07945826324 1 pc/box
PSX1XLFL0250 PSX1XLFL0250X 07945825803 PSX1XLUB0250 PSX1XLUB0250X 07945825824 PSX1XLDB0250 PSX1XLDB0250X 07945826325 1 pc/box
PSX1XLFL0280 PSX1XLFL0280X 07945825804 PSX1XLUB0280 PSX1XLUB0280X 07945825825 PSX1XLDB0280 PSX1XLDB0280X 07945826326 1 pc/box
PSX1XLFL0315 PSX1XLFL0315X 07945825805 PSX1XLUB0315 PSX1XLUB0315X 07945825826 PSX1XLDB0315 PSX1XLDB0315X 07945826327 1 pc/box
PSX1XLFL0350 PSX1XLFL0350X 07945825806 PSX1XLUB0350 PSX1XLUB0350X 07945825827 PSX1XLDB0350 PSX1XLDB0350X 07945826328 1 pc/box
PSX1XLFL0400 PSX1XLFL0400X 07945825807 PSX1XLUB0400 PSX1XLUB0400X 07945825828 PSX1XLDB0400 PSX1XLDB0400X 07945826329 1 pc/box
PSX1XLFL0450 PSX1XLFL0450X 07945825808 PSX1XLUB0450 PSX1XLUB0450X 07945825829 PSX1XLDB0450 PSX1XLDB0450X 07945826330 1 pc/box
PSX1XLFL0500 PSX1XLFL0500X 07945825809 PSX1XLUB0500 PSX1XLUB0500X 07945826310 PSX1XLDB0500 PSX1XLDB0500X 07945826331 1 pc/box
PSX1XLFL0550 PSX1XLFL0550X 07945825810 PSX1XLUB0550 PSX1XLUB0550X 07945826311 PSX1XLDB0550 PSX1XLDB0550X 07945826332 1 pc/box
PSX1XLFL0630 PSX1XLFL0630X 07945825811 PSX1XLUB0630 PSX1XLUB0630X 07945826312 PSX1XLDB0630 PSX1XLDB0630X 07945826333 1 pc/box
NH 3XL
PSX3XLFL0450 PSX3XLFL0450X 07945828641 PSX3XLUB0450 PSX3XLUB0450X 07945828645 PSX3XLDB0450 PSX3XLDB0450X 07945828649 1 pc/box
PSX3XLFL0500 PSX3XLFL0500X 07945828642 PSX3XLUB0500 PSX3XLUB0500X 07945828646 PSX3XLDB0500 PSX3XLDB0500X 07945828650 1 pc/box
PSX3XLFL0550 PSX3XLFL0550X 07945828643 PSX3XLUB0550 PSX3XLUB0550X 07945828647 PSX3XLDB0550 PSX3XLDB0550X 07945828651 1 pc/box
PSX3XLFL0630 PSX3XLFL0630X 07945828644 PSX3XLUB0630 PSX3XLUB0630X 07945828648 PSX3XLDB0630 PSX3XLDB0630X 07945828652 1 pc/box
PSX3XLFL0700 PSX3XLFL0700X 07945825812 PSX3XLUB0700 PSX3XLUB0700X 07945826313 PSX3XLDB0700 PSX3XLDB0700X 07945826334 1 pc/box
PSX3XLFL0800 PSX3XLFL0800X 07945825813 PSX3XLUB0800 PSX3XLUB0800X 07945826314 PSX3XLDB0800 PSX3XLDB0800X 07945826335 1 pc/box
PSX3XLFL0900 PSX3XLFL0900X 07945825814 PSX3XLUB0900 PSX3XLUB0900X 07945826315 PSX3XLDB0900 PSX3XLDB0900X 07945826336 1 pc/box
PSX3XLFL1000 PSX3XLFL1000X 07945825815 PSX3XLUB1000 PSX3XLUB1000X 07945826316 PSX3XLDB1000 PSX3XLDB1000X 07945826337 1 pc/box
PSX3XLFL1100 PSX3XLFL1100X 07945825816 PSX3XLUB1100 PSX3XLUB1100X 07945826317 PSX3XLDB1100 PSX3XLDB1100X 07945826338 1 pc/box
PSX3XLFL1250 PSX3XLFL1250X 07945825817 PSX3XLUB1250 PSX3XLUB1250X 07945826318 PSX3XLDB1250 PSX3XLDB1250X 07945826339 1 pc/box
PSX3XLFL1400 PSX3XLFL1400X 07945825818 PSX3XLUB1400 PSX3XLUB1400X 07945826319 PSX3XLDB1400 PSX3XLDB1400X 07945826340 1 pc/box
CASE
SIZE
CATALOG NUMBER AMPERE
RATING
(A)
VOLTAGE
RATING
(V)
INTERRUPTING
RATING
MINIMUM
BREAKING
CAPACITY
(A)
MELTING
(PRE-ARC)
I
2
T (A2
S)
TOTAL CLEARING
I
2
T (A2
S) AT
RATED VOLTAGE
WATTS LOSS
AT 100%
RATED
CURRENT (W)
AGENCY
CERTIFICATION
FLUSH
METRIC (FL)
BOLTED
BLADE (UB)
DIN
BLADE (DB) DC DC DC cURus
NH 1XL
PSX1XLFL0080 PSX1XLUB0080 PSX1XLDB0080 80 1500 250 kA 800 A 2048 8720 16.4 •
PSX1XLFL0100 PSX1XLUB0100 PSX1XLDB0100 100 1500 250 kA 1000 A 3540 15485 19.1 •
PSX1XLFL0125 PSX1XLUB0125 PSX1XLDB0125 125 1500 250 kA 1250 A 7091 35720 19.6 •
PSX1XLFL0160 PSX1XLUB0160 PSX1XLDB0160 160 1500 250 kA 1600 A 13704 55490 24.6 •
PSX1XLFL0200 PSX1XLUB0200 PSX1XLDB0200 200 1500 250 kA 2000 A 18016 77240 34.6 •
PSX1XLFL0250 PSX1XLUB0250 PSX1XLDB0250 250 1500 250 kA 2500 A 36552 156450 38.5 •
PSX1XLFL0280 PSX1XLUB0280 PSX1XLDB0280 280 1500 250 kA 2800 A 36552 156450 48.7 •
PSX1XLFL0315 PSX1XLUB0315 PSX1XLDB0315 315 1500 250 kA 3150 A 56940 212400 53.6 •
PSX1XLFL0350 PSX1XLUB0350 PSX1XLDB0350 350 1500 250 kA 3500 A 86623 332050 51.8 •
PSX1XLFL0400 PSX1XLUB0400 PSX1XLDB0400 400 1500 250 kA 4000 A 116271 352600 64.4 •
PSX1XLFL0450 PSX1XLUB0450 PSX1XLDB0450 450 1500 250 kA 6750 A 149336 540850 69.3 •
PSX1XLFL0500 PSX1XLUB0500 PSX1XLDB0500 500 1500 250 kA 7500 A 250109 774600 71.5 •
PSX1XLFL0550 PSX1XLUB0550 PSX1XLDB0550 550 1500 250 kA 8250 A 276650 924967 83.1 •
PSX1XLFL0630 PSX1XLUB0630 PSX1XLDB0630 630 1500 250 kA 9450 A 276650 924967 127.3 •
NH 3XL
PSX3XLFL0450 PSX3XLUB0450 PSX3XLDB0450 450 1500 250 kA 4500 A 57143 194500 146.3 •
PSX3XLFL0500 PSX3XLUB0500 PSX3XLDB0500 500 1500 250 kA 5000 A 98570 333900 132.5 •
PSX3XLFL0550 PSX3XLUB0550 PSX3XLDB0550 550 1500 250 kA 5500 A 142790 451600 136.7 •
PSX3XLFL0630 PSX3XLUB0630 PSX3XLDB0630 630 1500 250 kA 6300 A 205617 650304 150.9 •
PSX3XLFL0700 PSX3XLUB0700 PSX3XLDB0700 700 1500 250 kA 7000 A 305720 1003650 164.5 •
PSX3XLFL0800 PSX3XLUB0800 PSX3XLDB0800 800 1500 250 kA 8000 A 335493 1150000 209.6 •
PSX3XLFL0900 PSX3XLUB0900 PSX3XLDB0900 900 1500 250 kA 9000 A 403262 1308500 266.9 •
PSX3XLFL1000 PSX3XLUB1000 PSX3XLDB1000 1000 1500 250 kA 10000 A 484792 1791500 335.0 •
PSX3XLFL1100 PSX3XLUB1100 PSX3XLDB1100 1100 1500 250 kA 11000 A 656719 2201250 341.0 •
PSX3XLFL1250 PSX3XLUB1250 PSX3XLDB1250 1250 1500 250 kA 12500 A 995376 3003500 346.9 •
PSX3XLFL1400 PSX3XLUB1400 PSX3XLDB1400 1400 1500 250 kA 14000 A 1395828 4228250 361.9 •
101
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
PSX SERIES HIGH-SPEED SQUARE BODY FUSES
Dimensions
DIMENSIONS MM (IN)
CASE
SIZE
MOUNTING
STYLE FIGURE A B C D E F G* H I J RECOMMENDED
FASTENER THREAD RECOMMENDED
TORQUE
NH
1XL
FLUSH
METRIC (FL) 1 128.5
(5.06)
51.5
(2.03)
51.5
(2.03)
57.5
(2.26)
20.0
(0.79)
126.7
(4.99)
83.9
(3.30) - - - - M8 x 1.25 13–20 Nm
BOLTED
BLADE (UB) 2 211.5
(8.33)
51.5
(2.03)
51.5
(2.03)
57.5
(2.26)
25.0
(0.98)
126.7
(4.99)
83.9
(3.30)
6.0
(0.24)
146.5
(5.77)
187.5
(7.38)
12 mm
(1/2) - 64 Nm
DIN BLADE
(DB) 3 199.5
(7.85)
51.5
(2.03)
51.5
(2.03)
57.5
(2.26)
25.0
(0.98)
126.7
(4.99)
83.9
(3.30)
6.0
(0.24)
167.5
(6.59) - 10 mm
(3/8) - 26 Nm
NH
3XL
FLUSH
METRIC (FL) 1 129.5
(5.10)
73.5
(2.89)
73.5
(2.89)
79.5
(3.13)
30.0
(1.18)
128.1
(5.04)
105.9
(4.17) - - - - M12 x 1.75 45–55 Nm
BOLTED
BLADE (UB) 2 213.5
(8.41)
73.5
(2.89)
73.5
(2.89)
79.5
(3.13)
36.0
(1.42)
128.7
(5.07)
105.9
(4.17)
6.0
(0.24)
153.1
(6.03)
186.1
(7.33)
14 mm
(9/16) - 92 Nm
DIN BLADE
(DB) 3 199.0
(7.83)
73.5
(2.89)
73.5
(2.89)
79.5
(3.13)
36.0
(1.42)
128.7
(5.07)
105.9
(4.17)
6.0
(0.24)
166.8
(6.57) - 10 mm
(3/8) - 26 Nm
Figure 1. Flush-metric style Figure 2. Bolted-blade style Figure 3. DIN-blade style
A
A
B B B
C C C
D D D
E
E
F
F
F
G
G
H
FIGURE 1 FIGURE 2 FIGURE 3
I J
E
A I
A
B B B
C C
D D D
E
E
F
F
G
G
G
H
H
FIGURE 1 FIGURE 2 FIGURE 3
I J
E
A I
A
A
B B B
C C C
D D D
E
E
F
F
F
G
G
G
H
H
FIGURE 1 FIGURE 2 FIGURE 3
I J
E
A I
A
A
B B B
C C C
D D D
E
E
F
F
F
G
G
G
H
H
FIGURE 1 FIGURE 2 FIGURE 3
I J
E
A I
*These dimensions include the optional bolt-on microswitch.
102
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
PSR SERIES HIGH-SPEED SQUARE BODY FUSES
Specifications
Voltage Range Ac: 450 V–1300 V
Dc: 450 V–1000 V
Amperage Range 40 A–2250 A
Interrupting Range Ac: 100 kA–200 kA
Dc: 150 kA
Time Constant 10 ms at IR
Microswitch Yes
Mounting Flush-end style
Material Body: ceramic
Contacts: plated brass
Approvals UL 248-13 Recognized (File: E71611)
cURus (File: E71611)
CCC*
Applicable Standards UL248-13, IEC 60269-4 (Class aR)
Environmental RoHS Compliant, REACH
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to +35 °C with relative humidity
<65 %
Country of Origin Mexico
Description
Littelfuse PSR series high-speed square body fuses are
specially designed for protection of power semiconductor
devices such as diodes, triacs, IGBTs, SCRs, MOSFETs,
and other solid state devices that are typically designed
into power conversion and power conditioning equipment.
Variable frequency drives, inverters, UPS, rectifiers, and
soft-starters are examples of typical equipment designed
with sensitive power semiconductor devices that cannot
withstand any line surge or overcurrent conditions and
require high-speed protection.
Littelfuse POWR-SPEED PSR series products offer
optimized circuit protection at the extremely fast speed
required to protect modern day power conversion devices.
Such products are commonly found in numerous applications
including pulp and paper industries, cranes and heavy-lifting
equipment, processing industries, wastewater treatment
plants, and various large factories and MRO facilities.
Features/Benefits
Best in class dc performance Extremely current limiting Superior cycling capability Global certification cURus, CCC*
Direct bus-bar mount design
Visual and optional microswitch fuse blown indication
Low watt-loss design
Compliance with US and Canadian requirements
Fast-acting Class aR performance
Applications
Power conversion devices (UPS, inverter, rectifiers, drives) Dc systems (dc common bus, dc injection braking)
Battery protection application (energy storage systems)
Electric vehicle charging stations
Heaters and power supplies
Semiconductor Fuses • Flush End • 40 A–2250 A S
SERIES CASE
SIZE TERMINATION AMPERAGE CATALOG
NUMBER
ORDERING
PART NUMBER
PSR 030 FL 0550 PSR030FL0550 PSR030FL0550Z
Ordering Part Number
Catalog Number
PSR 030 FL 0550 Z
Termination
FL - Flush end metric thread
FS - Flush end inches thread
Case Size
30, 31, 32, 33, 70, 71, 72, 73
Amperage
Series
Packing Quantity
Z = (2–3 pcs/box)
Recommended Accessories
Microswitch: MS3H1000C (case size 30 to 33)
MS7H1500C (case size 70 to 73)
Web Resources
Download technical documents: Littelfuse.com/PSR
Note: high-speed fuses are designed for fixed installations. They are not
intended for use in moving vehicle applications.
* Refer to CCC section of Electrical Characteristics table
103
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
PSR SERIES HIGH-SPEED SQUARE BODY FUSES
Electrical Characteristics
CASE
SIZE
CATALOG NUMBER
AMPERE
RATING (A)
VOLTAGE
RATING (V)
INTERRUPTING
RATING MELTING
(PRE-ARC)
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s) AT
RATED VOLTAGE
WATT LOSS
AT 100 %
RATED
CURRENT (W)
AGENCY
CERTIFICATION
FLUSH END
METRIC THREAD
FLUSH END
INCHES THREAD
AC DC AC DC cURus CCC*
IEC UL AC DC
30
PSR030FL0040 PSR030FS0040 40 690 700 600 200 kA 150 kA 76 280 260 12 • •
PSR030FL0050 PSR030FS0050 50 690 700 600 200 kA 150 kA 110 598 384 15 • •
PSR030FL0063 PSR030FS0063 63 690 700 600 200 kA 150 kA 176 1023 640 20 • •
PSR030FL0080 PSR030FS0080 80 690 700 600 200 kA 150 kA 304 1728 1252 24 • •
PSR030FL0100 PSR030FS0100 100 690 700 600 200 kA 150 kA 437 2835 1575 27 • •
PSR030FL0125 PSR030FS0125 125 690 700 600 200 kA 150 kA 707 4684 2783 36 • •
PSR030FL0160 PSR030FS0160 160 690 700 600 200 kA 150 kA 1359 9114 5507 39 • •
PSR030FL0200 PSR030FS0200 200 690 700 600 200 kA 150 kA 3012 15169 14700 39 • •
PSR030FL0250 PSR030FS0250 250 690 700 600 200 kA 150 kA 4668 29952 20833 50 • •
PSR030FL0315 PSR030FS0315 315 690 700 600 200 kA 150 kA 7131 61830 31600 61 • •
PSR030FL0350 PSR030FS0350 350 690 700 600 200 kA 150 kA 12007 85320 49273 62 • •
PSR030FL0400 PSR030FS0400 400 690 700 600 200 kA 150 kA 16209 114750 63367 75 • •
PSR030FL0450 PSR030FS0450 450 690 700 600 200 kA 150 kA 23133 160110 93533 75 • •
PSR030FL0500 PSR030FS0500 500 690 700 600 200 kA 150 kA 31429 225180 137333 80 • •
PSR030FL0550 PSR030FS0550 550 690 700 600 200 kA 150 kA 44323 268920 145400 78 • •
PSR030FL0630 PSR030FS0630 630 690 700 550 200 kA 150 kA 57404 480010 267800 90 •
31
PSR031FL0200 PSR031FS0200 200 690 700 600 200 kA 150 kA 1965 17334 16188 49 • •
PSR031FL0250 PSR031FS0250 250 690 700 600 200 kA 150 kA 3789 35343 21080 52 • •
PSR031FL0315 PSR031FS0315 315 690 700 600 200 kA 150 kA 6862 59130 30694 61 • •
PSR031FL0350 PSR031FS0350 350 690 700 600 200 kA 150 kA 9523 76140 40996 63 • •
PSR031FL0400 PSR031FS0400 400 690 700 600 200 kA 150 kA 14770 124335 64359 64 • •
PSR031FL0450 PSR031FS0450 450 690 700 600 200 kA 150 kA 22457 178200 97444 69 • •
PSR031FL0500 PSR031FS0500 500 690 700 600 200 kA 150 kA 29751 251505 125935 81 • •
PSR031FL0550 PSR031FS0550 550 690 700 600 200 kA 150 kA 42056 289170 171845 77 • •
PSR031FL0630 PSR031FS0630 630 690 700 600 200 kA 150 kA 45403 415500 175500 93 • •
PSR031FL0700 PSR031FS0700 700 690 700 600 200 kA 150 kA 98187 601425 337260 92 • •
PSR031FL0800 PSR031FS0800 800 690 700 600 200 kA 150 kA 137208 848880 502800 106 • •
PSR031FL0900 PSR031FS0900 900 550 600 550 200 kA 150 kA 155163 945100 631820 118 •
32
PSR032FL0400 PSR032FS0400 400 690 700 600 200 kA 150 kA 11104 79650 44533 82 • •
PSR032FL0450 PSR032FS0450 450 690 700 600 200 kA 150 kA 15535 116100 65463 88 • •
PSR032FL0500 PSR032FS0500 500 690 700 600 200 kA 150 kA 21573 161460 88277 94 • •
PSR032FL0550 PSR032FS0550 550 690 700 600 200 kA 150 kA 26327 177660 107960 104 • •
PSR032FL0630 PSR032FS0630 630 690 700 600 200 kA 150 kA 34790 234900 156963 110 • •
PSR032FL0700 PSR032FS0700 700 690 700 600 200 kA 150 kA 51191 291870 209287 117 • •
PSR032FL0800 PSR032FS0800 800 690 700 600 200 kA 150 kA 60125 472770 249000 145 • •
PSR032FL0900 PSR032FS0900 900 690 700 600 200 kA 150 kA 107785 764100 404000 145 • •
PSR032FL1000 PSR032FS1000 1000 690 700 600 200 kA 150 kA 190102 933120 672333 146 • •
PSR032FL1100 PSR032FS1100 1100 690 700 600 200 kA 150 kA 225379 1247400 744000 149 • •
PSR032FL1250 PSR032FS1250 1250 550** 600** 550** 200 kA 150 kA 336661 1114994 1197000 149 •
PSR032FL1400 PSR032FS1400 1400 450 500 450 200 kA 150 kA 551749 1611639 1865400 154 •
PSR032FL1500 PSR032FS1500 1500 450 500 450 200 kA 150 kA 673360 2045907 1735500 171 •
33
PSR033FL0450 PSR033FS0450 450 690 700 600 200 kA 150 kA 13600 106380 58947 99 • •
PSR033FL0500 PSR033FS0500 500 690 700 600 200 kA 150 kA 16434 140400 77846 107 • •
PSR033FL0550 PSR033FS0550 550 690 700 600 200 kA 150 kA 23314 187650 100461 108 • •
PSR033FL0630 PSR033FS0630 630 690 700 600 200 kA 150 kA 38727 285930 142437 113 • •
PSR033FL0700 PSR033FS0700 700 690 700 600 200 kA 150 kA 56763 392580 209863 113 • •
PSR033FL0800 PSR033FS0800 800 690 700 600 200 kA 150 kA 84691 575505 348500 120 • •
PSR033FL0900 PSR033FS0900 900 690 700 600 200 kA 150 kA 122619 740340 451177 122 • •
PSR033FL1000 PSR033FS1000 1000 690 700 600 200 kA 150 kA 222350 1170450 787750 124 • •
PSR033FL1100 PSR033FS1100 1100 690 700 600 200 kA 150 kA 310824 1568700 821400 127 • •
PSR033FL1250 PSR033FS1250 1250 690 700 600 200 kA 150 kA 476902 2403000 1674333 131 • •
PSR033FL1400 PSR033FS1400 1400 690 700 500 200 kA 150 kA 583552 2920050 1979750 144 • •
PSR033FL1500 PSR033FS1500 1500 600 650 500 200 kA 150 kA 674538 2433200 1996733 163 • •
PSR033FL1600 PSR033FS1600 1600 600 650 500 200 kA 150 kA 779948 2942800 2301633 182 • •
PSR033FL1800 PSR033FS1800 1800 600 650 500 200 kA 150 kA 952196 3785040 2724180 224 • •
PSR033FL2000 PSR033FS2000 2000 550 600 500 200 kA 150 kA 1234315 4131600 3755180 222 • •
PSR033FL2250 PSR033FS2250 2250 500 550 450 200 kA 150 kA 1236000 4459651 3859500 299 •
104
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
PSR SERIES HIGH-SPEED SQUARE BODY FUSES
Electrical Characteristics (cont.)
* CCC Certification only on Flush End Metric Thread Version
** Littelfuse self-certified
CASE
SIZE
CATALOG NUMBER
AMPERE
RATING (A)
VOLTAGE
RATING (V)
INTERRUPTING
RATING MELTING
(PRE-ARC)
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s) AT
RATED VOLTAGE
WATT LOSS
AT 100 %
RATED
CURRENT (W)
AGENCY
CERTIFICATION
FLUSH END
METRIC THREAD
FLUSH END
INCHES THREAD
AC DC AC DC cURus CCC*
IEC UL AC DC
70
PSR070FL0050 PSR070FS0050 50 1250 1300 1000 100 kA 150 kA 177 2050 400 21 • •
PSR070FL0063 PSR070FS0063 63 1250 1300 1000 100 kA 150 kA 273 3399 900 23 • •
PSR070FL0080 PSR070FS0080 80 1250 1300 1000 100 kA 150 kA 583 6732 2200 24 • •
PSR070FL0100 PSR070FS0100 100 1250 1300 1000 100 kA 150 kA 974 10996 3750 29 • •
PSR070FL0125 PSR070FS0125 125 1250 1300 1000 100 kA 150 kA 1352 13011 5150 43 • •
PSR070FL0160 PSR070FS0160 160 1250 1300 1000 100 kA 150 kA 2377 25662 8950 51 • •
PSR070FL0200 PSR070FS0200 200 1250 1300 1000 100 kA 150 kA 4177 39087 17267 61 • •
PSR070FL0250 PSR070FS0250 250 1250 1300 1000 100 kA 150 kA 8629 89790 36750 71 • •
PSR070FL0280 PSR070FS0280 280 1250 1300 1000 100 kA 150 kA 11844 113201 46750 71 • •
PSR070FL0315 PSR070FS0315 315 1250 1300 1000 100 kA 150 kA 18162 142051 66833 69 • •
PSR070FL0350 PSR070FS0350 350 1250** 1300** 1000** 100 kA 150 kA 22963 215230 95410 73 •
PSR070FL0400 PSR070FS0400 400 1100 1200 900 100 kA 150 kA 37103 283480 154320 71 •
71
PSR071FL0160 PSR071FS0160 160 1250 1300 1000 100 kA 150 kA 2756 24600 8800 42 • •
PSR071FL0200 PSR071FS0200 200 1250 1300 1000 100 kA 150 kA 4918 50307 19050 52 • •
PSR071FL0250 PSR071FS0250 250 1250 1300 1000 100 kA 150 kA 10592 104427 43100 54 • •
PSR071FL0280 PSR071FS0280 280 1250 1300 1000 100 kA 150 kA 13763 131897 54150 58 •
PSR071FL0315 PSR071FS0315 315 1250 1300 1000 100 kA 150 kA 20882 200244 67450 60 • •
PSR071FL0350 PSR071FS0350 350 1250 1300 1000 100 kA 150 kA 23301 225500 102500 71 • •
PSR071FL0400 PSR071FS0400 400 1250 1300 1000 100 kA 150 kA 43211 374986 185000 69 • •
PSR071FL0450 PSR071FS0450 450 1250 1300 1000 100 kA 150 kA 55915 452394 241333 88 • •
PSR071FL0500 PSR071FS0500 500 1100 1200 900 100 kA 150 kA 75315 468845 253960 82 •
PSR071FL0550 PSR071FS0550 550 1100 1200 900 100 kA 150 kA 87328 693507 332600 90 •
PSR071FL0630 PSR071FS0630 630 1000 1100 900 100 kA 150 kA 131240 790862 426550 100 •
72
PSR072FL0250 PSR072FS0250 250 1250 1300 1000 100 kA 150 kA 7737 72789 28567 63 • •
PSR072FL0280 PSR072FS0280 280 1250 1300 1000 100 kA 150 kA 10915 124538 46897 62 • •
PSR072FL0315 PSR072FS0315 315 1250 1300 1000 100 kA 150 kA 16187 145140 58867 67 • •
PSR072FL0350 PSR072FS0350 350 1250 1300 1000 100 kA 150 kA 18727 160447 69633 80 • •
PSR072FL0400 PSR072FS0400 400 1250 1300 1000 100 kA 150 kA 27112 243540 108000 89 • •
PSR072FL0450 PSR072FS0450 450 1250 1300 1000 100 kA 150 kA 35927 406413 159133 107 • •
PSR072FL0500 PSR072FS0500 500 1250 1300 1000 100 kA 150 kA 50398 425375 216333 115 • •
PSR072FL0550 PSR072FS0550 550 1250 1300 1000 100 kA 150 kA 73858 539833 271333 115 • •
PSR072FL0630 PSR072FS0630 630 1250 1300 1000 100 kA 150 kA 126126 942180 436000 119 • •
PSR072FL0700 PSR072FS0700 700 1100 1200 900** 100 kA 150 kA 228761 1123694 715180 115 •
PSR072FL0800 PSR072FS0800 800 1100 1200 900** 100 kA 150 kA 230695 1432388 911650 113 •
PSR072FL0900 PSR072FS0900 900 1000** 1100** 900** 100 kA 150 kA 376641 1309993 1030400 125 •
PSR072FL1000 PSR072FS1000 1000 850 900 800** 100 kA 150 kA 455955 1772548 1361500 136 •
73
PSR073FL0315 PSR073FS0315 315 1250 1300 1000 100 kA 150 kA 10245 106600 38650 88 • •
PSR073FL0350 PSR073FS0350 350 1250 1300 1000 100 kA 150 kA 13586 159627 57467 96 • •
PSR073FL0400 PSR073FS0400 400 1250 1300 1000 100 kA 150 kA 19797 211273 86800 124 • •
PSR073FL0450 PSR073FS0450 450 1250 1300 1000 100 kA 150 kA 29834 279073 114333 122 • •
PSR073FL0500 PSR073FS0500 500 1250 1300 1000 100 kA 150 kA 42751 416437 184500 121 • •
PSR073FL0550 PSR073FS0550 550 1250 1300 1000 100 kA 150 kA 55513 491713 224500 130 • •
PSR073FL0630 PSR073FS0630 630 1250 1300 1000 100 kA 150 kA 94649 804338 377500 136 • •
PSR073FL0700 PSR073FS0700 700 1250 1300 1000 100 kA 150 kA 158097 1170960 575667 135 • •
PSR073FL0800 PSR073FS0800 800 1250 1300 800** 100 kA 150 kA 234943 1769880 699850 123 •
PSR073FL0900 PSR073FS0900 900 950 1050 800** 100 kA 150 kA 317743 2280547 901779 140 •
PSR073FL1000 PSR073FS1000 1000 950 1050 800** 100 kA 150 kA 476221 3910801 1546418 128 •
PSR073FL1100 PSR073FS1100 1100 950 1050 800** 100 kA 150 kA 570870 2736600 1699000 166 •
PSR073FL1250 PSR073FS1250 1250 900 1000 - 100 kA - 993924 3091160 - 182 •
PSR073FL1400 PSR073FS1400 1400 900 1000 - 100 kA - 1168091 3627820 - 229 •
* CCC Certification only on Flush End Metric Thread Version
** Littelfuse self-certified
105
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
PSR SERIES HIGH-SPEED SQUARE BODY FUSES
Ordering Information
CASE
SIZE
FLUSH END - METRIC THREAD FLUSH END - INCHES THREAD BOX
QUANTITY
PCS/BOX CATALOG
NUMBER
ORDERING
PART NUMBER UPC CATALOG
NUMBER
ORDERING
PART NUMBER UPC
30
PSR030FL0040 PSR030FL0040Z 07945820436 PSR030FS0040 PSR030FS0040Z 07945820451 3 pcs/box
PSR030FL0050 PSR030FL0050Z 07945820437 PSR030FS0050 PSR030FS0050Z 07945820452 3 pcs/box
PSR030FL0063 PSR030FL0063Z 07945820438 PSR030FS0063 PSR030FS0063Z 07945820453 3 pcs/box
PSR030FL0080 PSR030FL0080Z 07945820439 PSR030FS0080 PSR030FS0080Z 07945820454 3 pcs/box
PSR030FL0100 PSR030FL0100Z 07945820440 PSR030FS0100 PSR030FS0100Z 07945820455 3 pcs/box
PSR030FL0125 PSR030FL0125Z 07945820441 PSR030FS0125 PSR030FS0125Z 07945820456 3 pcs/box
PSR030FL0160 PSR030FL0160Z 07945820442 PSR030FS0160 PSR030FS0160Z 07945820457 3 pcs/box
PSR030FL0200 PSR030FL0200Z 07945820443 PSR030FS0200 PSR030FS0200Z 07945820458 3 pcs/box
PSR030FL0250 PSR030FL0250Z 07945820444 PSR030FS0250 PSR030FS0250Z 07945820459 3 pcs/box
PSR030FL0315 PSR030FL0315Z 07945820445 PSR030FS0315 PSR030FS0315Z 07945820460 3 pcs/box
PSR030FL0350 PSR030FL0350Z 07945820446 PSR030FS0350 PSR030FS0350Z 07945820461 3 pcs/box
PSR030FL0400 PSR030FL0400Z 07945820447 PSR030FS0400 PSR030FS0400Z 07945820462 3 pcs/box
PSR030FL0450 PSR030FL0450Z 07945820448 PSR030FS0450 PSR030FS0450Z 07945820463 3 pcs/box
PSR030FL0500 PSR030FL0500Z 07945820449 PSR030FS0500 PSR030FS0500Z 07945820464 3 pcs/box
PSR030FL0550 PSR030FL0550Z 07945820450 PSR030FS0550 PSR030FS0550Z 07945820465 3 pcs/box
PSR030FL0630 PSR030FL0630Z 07945827757 PSR030FS0630 PSR030FS0630Z 07945827778 3 pcs/box
31
PSR031FL0200 PSR031FL0200Z 07945820466 PSR031FS0200 PSR031FS0200Z 07945820477 3 pcs/box
PSR031FL0250 PSR031FL0250Z 07945820467 PSR031FS0250 PSR031FS0250Z 07945820478 3 pcs/box
PSR031FL0315 PSR031FL0315Z 07945820468 PSR031FS0315 PSR031FS0315Z 07945820479 3 pcs/box
PSR031FL0350 PSR031FL0350Z 07945820469 PSR031FS0350 PSR031FS0350Z 07945820480 3 pcs/box
PSR031FL0400 PSR031FL0400Z 07945820470 PSR031FS0400 PSR031FS0400Z 07945820481 3 pcs/box
PSR031FL0450 PSR031FL0450Z 07945820471 PSR031FS0450 PSR031FS0450Z 07945820482 3 pcs/box
PSR031FL0500 PSR031FL0500Z 07945820472 PSR031FS0500 PSR031FS0500Z 07945820483 3 pcs/box
PSR031FL0550 PSR031FL0550Z 07945820473 PSR031FS0550 PSR031FS0550Z 07945820484 3 pcs/box
PSR031FL0630 PSR031FL0630Z 07945820474 PSR031FS0630 PSR031FS0630Z 07945820485 3 pcs/box
PSR031FL0700 PSR031FL0700Z 07945820475 PSR031FS0700 PSR031FS0700Z 07945820486 3 pcs/box
PSR031FL0800 PSR031FL0800Z 07945820476 PSR031FS0800 PSR031FS0800Z 07945820487 3 pcs/box
PSR031FL0900 PSR031FL0900Z 07945827758 PSR031FS0900 PSR031FS0900Z 07945827779 3 pcs/box
32
PSR032FL0400 PSR032FL0400Z 07945820488 PSR032FS0400 PSR032FS0400Z 07945820498 3 pcs/box
PSR032FL0450 PSR032FL0450Z 07945820489 PSR032FS0450 PSR032FS0450Z 07945820499 3 pcs/box
PSR032FL0500 PSR032FL0500Z 07945820490 PSR032FS0500 PSR032FS0500Z 07945820500 3 pcs/box
PSR032FL0550 PSR032FL0550Z 07945820491 PSR032FS0550 PSR032FS0550Z 07945820501 3 pcs/box
PSR032FL0630 PSR032FL0630Z 07945820492 PSR032FS0630 PSR032FS0630Z 07945820502 3 pcs/box
PSR032FL0700 PSR032FL0700Z 07945820493 PSR032FS0700 PSR032FS0700Z 07945820503 3 pcs/box
PSR032FL0800 PSR032FL0800Z 07945820494 PSR032FS0800 PSR032FS0800Z 07945820504 3 pcs/box
PSR032FL0900 PSR032FL0900Z 07945820495 PSR032FS0900 PSR032FS0900Z 07945820505 3 pcs/box
PSR032FL1000 PSR032FL1000Z 07945820496 PSR032FS1000 PSR032FS1000Z 07945820506 3 pcs/box
PSR032FL1100 PSR032FL1100Z 07945820497 PSR032FS1100 PSR032FS1100Z 07945820507 3 pcs/box
PSR032FL1250 PSR032FL1250Z 07945827759 PSR032FS1250 PSR032FS1250Z 07945827780 3 pcs/box
PSR032FL1400 PSR032FL1400Z 07945827760 PSR032FS1400 PSR032FS1400Z 07945827781 3 pcs/box
PSR032FL1500 PSR032FL1500Z 07945827761 PSR032FS1500 PSR032FS1500Z 07945827782 3 pcs/box
33
PSR033FL0450 PSR033FL0450Z 07945822163 PSR033FS0450 PSR033FS0450Z 07945822164 3 pcs/box
PSR033FL0500 PSR033FL0500Z 07945820508 PSR033FS0500 PSR033FS0500Z 07945820522 3 pcs/box
PSR033FL0550 PSR033FL0550Z 07945820509 PSR033FS0550 PSR033FS0550Z 07945820523 3 pcs/box
PSR033FL0630 PSR033FL0630Z 07945820510 PSR033FS0630 PSR033FS0630Z 07945820524 3 pcs/box
PSR033FL0700 PSR033FL0700Z 07945820511 PSR033FS0700 PSR033FS0700Z 07945820525 3 pcs/box
PSR033FL0800 PSR033FL0800Z 07945820512 PSR033FS0800 PSR033FS0800Z 07945820526 3 pcs/box
PSR033FL0900 PSR033FL0900Z 07945820513 PSR033FS0900 PSR033FS0900Z 07945820527 3 pcs/box
PSR033FL1000 PSR033FL1000Z 07945820514 PSR033FS1000 PSR033FS1000Z 07945820528 3 pcs/box
PSR033FL1100 PSR033FL1100Z 07945820515 PSR033FS1100 PSR033FS1100Z 07945820529 3 pcs/box
PSR033FL1250 PSR033FL1250Z 07945820516 PSR033FS1250 PSR033FS1250Z 07945820530 3 pcs/box
PSR033FL1400 PSR033FL1400Z 07945820517 PSR033FS1400 PSR033FS1400Z 07945820531 3 pcs/box
PSR033FL1500 PSR033FL1500Z 07945820518 PSR033FS1500 PSR033FS1500Z 07945820532 3 pcs/box
PSR033FL1600 PSR033FL1600Z 07945820519 PSR033FS1600 PSR033FS1600Z 07945820533 3 pcs/box
PSR033FL1800 PSR033FL1800Z 07945820520 PSR033FS1800 PSR033FS1800Z 07945820534 3 pcs/box
PSR033FL2000 PSR033FL2000Z 07945820521 PSR033FS2000 PSR033FS2000Z 07945820535 3 pcs/box
PSR033FL2250 PSR033FL2250Z 07945827762 PSR033FS2250 PSR033FS2250Z 07945827783 3 pcs/box
106
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
PSR SERIES HIGH-SPEED SQUARE BODY FUSES
Ordering Information (cont.)
CASE
SIZE
FLUSH END - METRIC THREAD FLUSH END - INCHES THREAD BOX
QUANTITY
PCS/BOX CATALOG
NUMBER
ORDERING
PART NUMBER UPC CATALOG
NUMBER
ORDERING
PART NUMBER UPC
70
PSR070FL0050 PSR070FL0050Z 07945820536 PSR070FS0050 PSR070FS0050Z 07945820546 2 pcs/box
PSR070FL0063 PSR070FL0063Z 07945820537 PSR070FS0063 PSR070FS0063Z 07945820547 2 pcs/box
PSR070FL0080 PSR070FL0080Z 07945820538 PSR070FS0080 PSR070FS0080Z 07945820548 2 pcs/box
PSR070FL0100 PSR070FL0100Z 07945820539 PSR070FS0100 PSR070FS0100Z 07945820549 2 pcs/box
PSR070FL0125 PSR070FL0125Z 07945820540 PSR070FS0125 PSR070FS0125Z 07945820550 2 pcs/box
PSR070FL0160 PSR070FL0160Z 07945820541 PSR070FS0160 PSR070FS0160Z 07945820551 2 pcs/box
PSR070FL0200 PSR070FL0200Z 07945820542 PSR070FS0200 PSR070FS0200Z 07945820552 2 pcs/box
PSR070FL0250 PSR070FL0250Z 07945820543 PSR070FS0250 PSR070FS0250Z 07945820553 2 pcs/box
PSR070FL0280 PSR070FL0280Z 07945820544 PSR070FS0280 PSR070FS0280Z 07945820554 2 pcs/box
PSR070FL0315 PSR070FL0315Z 07945820545 PSR070FS0315 PSR070FS0315Z 07945820555 2 pcs/box
PSR070FL0350 PSR070FL0350Z 07945827763 PSR070FS0350 PSR070FS0350Z 07945827784 2 pcs/box
PSR070FL0400 PSR070FL0400Z 07945827764 PSR070FS0400 PSR070FS0400Z 07945827785 2 pcs/box
71
PSR071FL0160 PSR071FL0160Z 07945820556 PSR071FS0160 PSR071FS0160Z 07945820564 2 pcs/box
PSR071FL0200 PSR071FL0200Z 07945820557 PSR071FS0200 PSR071FS0200Z 07945820565 2 pcs/box
PSR071FL0250 PSR071FL0250Z 07945820558 PSR071FS0250 PSR071FS0250Z 07945820566 2 pcs/box
PSR071FL0280 PSR071FL0280Z 07945820573 PSR071FS0280 PSR071FS0280Z 07945820582 2 pcs/box
PSR071FL0315 PSR071FL0315Z 07945820560 PSR071FS0315 PSR071FS0315Z 07945820568 2 pcs/box
PSR071FL0350 PSR071FL0350Z 07945820561 PSR071FS0350 PSR071FS0350Z 07945820569 2 pcs/box
PSR071FL0400 PSR071FL0400Z 07945820562 PSR071FS0400 PSR071FS0400Z 07945820570 2 pcs/box
PSR071FL0450 PSR071FL0450Z 07945820563 PSR071FS0450 PSR071FS0450Z 07945820571 2 pcs/box
PSR071FL0500 PSR071FL0500Z 07945827765 PSR071FS0500 PSR071FS0500Z 07945827786 2 pcs/box
PSR071FL0550 PSR071FL0550Z 07945827766 PSR071FS0550 PSR071FS0550Z 07945827787 2 pcs/box
PSR071FL0630 PSR071FL0630Z 07945827767 PSR071FS0630 PSR071FS0630Z 07945827788 2 pcs/box
72
PSR072FL0250 PSR072FL0250Z 07945820572 PSR072FS0250 PSR072FS0250Z 07945820581 2 pcs/box
PSR072FL0280 PSR072FL0280Z 07945820573 PSR072FS0280 PSR072FS0280Z 07945820582 2 pcs/box
PSR072FL0315 PSR072FL0315Z 07945820574 PSR072FS0315 PSR072FS0315Z 07945820583 2 pcs/box
PSR072FL0350 PSR072FL0350Z 07945820575 PSR072FS0350 PSR072FS0350Z 07945820584 2 pcs/box
PSR072FL0400 PSR072FL0400Z 07945820576 PSR072FS0400 PSR072FS0400Z 07945820585 2 pcs/box
PSR072FL0450 PSR072FL0450Z 07945820577 PSR072FS0450 PSR072FS0450Z 07945820586 2 pcs/box
PSR072FL0500 PSR072FL0500Z 07945820578 PSR072FS0500 PSR072FS0500Z 07945820587 2 pcs/box
PSR072FL0550 PSR072FL0550Z 07945820579 PSR072FS0550 PSR072FS0550Z 07945820588 2 pcs/box
PSR072FL0630 PSR072FL0630Z 07945820580 PSR072FS0630 PSR072FS0630Z 07945820589 2 pcs/box
PSR072FL0700 PSR072FL0700Z 07945827768 PSR072FS0700 PSR072FS0700Z 07945827789 2 pcs/box
PSR072FL0800 PSR072FL0800Z 07945827769 PSR072FS0800 PSR072FS0800Z 07945827790 2 pcs/box
PSR072FL0900 PSR072FL0900Z 07945827770 PSR072FS0900 PSR072FS0900Z 07945827793 2 pcs/box
PSR072FL1000 PSR072FL1000Z 07945827771 PSR072FS1000 PSR072FS1000Z 07945827794 2 pcs/box
73
PSR073FL0315 PSR073FL0315Z 07945820590 PSR073FS0315 PSR073FS0315Z 07945820602 2 pcs/box
PSR073FL0350 PSR073FL0350Z 07945820591 PSR073FS0350 PSR073FS0350Z 07945820603 2 pcs/box
PSR073FL0400 PSR073FL0400Z 07945820592 PSR073FS0400 PSR073FS0400Z 07945820604 2 pcs/box
PSR073FL0450 PSR073FL0450Z 07945820593 PSR073FS0450 PSR073FS0450Z 07945820605 2 pcs/box
PSR073FL0500 PSR073FL0500Z 07945820594 PSR073FS0500 PSR073FS0500Z 07945820606 2 pcs/box
PSR073FL0550 PSR073FL0550Z 07945820595 PSR073FS0550 PSR073FS0550Z 07945820607 2 pcs/box
PSR073FL0630 PSR073FL0630Z 07945820596 PSR073FS0630 PSR073FS0630Z 07945820608 2 pcs/box
PSR073FL0700 PSR073FL0700Z 07945820597 PSR073FS0700 PSR073FS0700Z 07945820609 2 pcs/box
PSR073FL0800 PSR073FL0800Z 07945827772 PSR073FS0800 PSR073FS0800Z 07945827795 2 pcs/box
PSR073FL0900 PSR073FL0900Z 07945827773 PSR073FS0900 PSR073FS0900Z 07945827796 2 pcs/box
PSR073FL1000 PSR073FL1000Z 07945827774 PSR073FS1000 PSR073FS1000Z 07945827797 2 pcs/box
PSR073FL1100 PSR073FL1100Z 07945827775 PSR073FS1100 PSR073FS1100Z 07945827798 2 pcs/box
PSR073FL1250 PSR073FL1250Z 07945827776 PSR073FS1250 PSR073FS1250Z 07945827799 2 pcs/box
PSR073FL1400 PSR073FL1400Z 07945827777 PSR073FS1400 PSR073FS1400Z 07945827800 2 pcs/box
107
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
PSR SERIES HIGH-SPEED SQUARE BODY FUSES
Dimensions
DIMENSIONS IN MM (IN)
CASE
SIZE A B C D E F G FL METRIC
THREAD
FS INCHES
THREAD
RECOMMENDED
TORQUE
30 50.0 (1.97) 43.0 (1.69) 43.0 (1.69) 49.0 (1.93) 17.0 (0.67) 47.4 (1.86) 76.4 (3.01) M8 x 1.25 5/16”–18 UNC 2B 13–20 Nm
31 50.0 (1.97) 51.5 (2.03) 51.5 (2.03) 57.5 (2.26) 20.0 (0.8) 48.2 (1.90) 84.9 (3.34) M8 x 1.25 5/16”–18 UNC 2B 13–20 Nm
32 51.0 (2.01) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 23.0 (0.91) 48.8 (1.92) 93.4 (3.68) M10 x 1.5 3/8”–16 UNC 2B 26–35 Nm
33 51.0 (2.01) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 30.0 (1.18) 49.2 (1.94) 106.9 (4.21) M12 x 1.75 1/2”–13 UNC 2B 45–55 Nm
70 74.0 (2.91) 43.0 (1.69) 43.0 (1.69) 49.0 (1.93) 17.0 (0.67) 71.4 (2.81) 76.4 (3.01) M8 x 1.25 5/16”–18 UNC 2B 13–20 Nm
71 74.0 (2.91) 51.5 (2.03) 51.5 (2.03) 57.5 (2.26) 20.0 (0.79) 72.2 (2.84) 84.9 (3.34) M8 x 1.25 5/16”–18 UNC 2B 13–20 Nm
72 75.0 (2.95) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 23.0 (0.91) 72.8 (2.87) 93.4 (3.68) M10 x 1.5 3/8”–16 UNC 2B 26–35 Nm
73 75.0 (2.95) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 30.0 (1.18) 73.2 (2.88) 106.9 (4.21) M12 x 1.75 1/2”–13 UNC 2B 45–55 Nm
E
C
B D
G
A
F
FL/FS
1/4" QC
TERMINAL
M4x0.7 THREAD
10.00 (.394)
STUD LENGTH
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
5 PSR SERIES
Littelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
GRAMFINISH GOOD Wmyork 1/30/2017
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET SCALE
PSR SERIES OUTLINE
NTS
A
F
MENSIONS MM (IN)
F G FL METRIC THREAD FS INCHES THREAD RECOMMENDED
TORQUE
67) 47.4 (1.86) 76.4 (3.01) M8x1.25 5/16"-18 UNC-2B 13-20 Nm
80) 48.2 (1.90) 84.9 (3.34) M8x1.25 5/16"-18 UNC-2B 13-20 Nm
91) 48.8 (1.92) 93.4 (3.68) M10x1.5 3/8"-16 UNC-2B 26-35 Nm
18) 49.2 (1.94) 106.9 (4.21) M12x1.75 1/2"-13 UNC-2B 45-55 Nm
70) 741.4 (2.81) 76.4 (3.01) M8x1.25 5/16"-18 UNC-2B 13-20 Nm
79) 72.2 (2.84) 84.9 (3.34) M8x1.25 5/16"-18 UNC-2B 13-20 Nm
91) 72.8 (2.87) 93.4 (3.68) M10x1.5 3/8"-16 UNC-2B 26-35 Nm
18) 73.2 (2.88) 106.9 (4.21) M12x1.75 1/2"-13 UNC-2B 45-55 Nm
VISUAL
INDICATOR
1/4" QC
TERMINAL
M4x0.7 THREAD
10.00 (.394)
STUD LENGTH
MICROSWITCH
(MS3H1000C/MS7H1500C)
108
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
PSR SERIES HIGH-SPEED SQUARE BODY BOLTED BLADE
Specifications
Voltage Rating Ac: 450 V–1300 V
Dc: 450 V–1000 V
Amperage Rating 40 A–2250 A
Interrupting Rating Ac: 100 kA–200 kA
Dc: 150 kA
Time Constant 10 ms at IR
Microswitch Yes
Mounting Bolted blade style
Material Body: ceramic
Contacts: plated copper
Approvals UL 248-13 Recognized (File: E71611)
cURus (File: E71611)
Environmental RoHS Compliant, REACH
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to +35 °C with relative humidity <65 %
Country of Origin Mexico
Description
Littelfuse PSR series high-speed square body fuses are
specially designed for protection of power semiconductor
devices such as diodes, triacs, IGBTs, SCRs, MOSFETs,
and other solid-state devices that are typically designed
into power conversion and power conditioning equipment.
Variable frequency drives, inverters, UPS, rectifiers, and
soft-starters are examples of typical equipment designed
with sensitive power semiconductor devices that cannot
withstand any line surge or overcurrent conditions and
require high-speed protection.
The PSR series with bolted blades is designed and tested
to IEC 60269-4.
Littelfuse POWR-SPEED® PSR series products offer
optimized circuit protection at the extremely fast speed
required to protect modern day power conversion devices.
Available in bolted blade style termination (typical in North
American market) with visual blown fuse indication standard
on all fuses and optional micro-switch for external indication.
Features/Benefits
Best in class dc performance
Extremely current limiting Superior cycling capability
Visual and optional microswitch fuse blown indication
Low watt-loss design
Compliance with US and Canadian requirements
Fast-acting Class aR performance
Applications
Power conversion devices (UPS, inverter,
rectifiers, drives)
Dc systems (dc common bus, dc injection braking)
Battery protection application (energy storage systems) Electric vehicle charging stations Heaters and power supplies
Semiconductor Fuses • Bolted Blade • 40 A—2250 A
Ordering Part Number
PSR 030 US 0550 Z
Termination
US = bolted short blade
UL = bolted long blade
Case Size
30, 31, 32, 33, 70, 71, 72, 73
Amperage
Series
Packing Quantity
X = (1 pc/box)
Z = (3 pcs/box)
SERIES CASE
SIZE TERMINATION AMPERAGE CATALOG
NUMBER
ORDERING PART
NUMBER
PSR 030 US 0550 PSR030US0550 PSR030US0550Z
Catalog Number
Recommended Accessories
Microswitch: MS3H1000C (Case Size 30 to 33)
MS7H1500C (Case Size 70 to 73)
Web Resources
Download technical documents: Littelfuse.com/PSR
Note: high-speed fuses are designed for fixed installations. They are
not intended for use in moving vehicle applications.
109
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
PSR SERIES HIGH-SPEED SQUARE BODY BOLTED BLADE
Electrical Characteristics
CASE
SIZE
CATALOG NUMBER
AMPERE
RATING (A)
VOLTAGE
RATING (V)
INTERRUPTING
RATING MELTING
(PRE-ARC)
I
2
T (A2
S)
TOTAL CLEARING
I
2
T (A2
S) AT
RATED VOLTAGE
WATT LOSS
AT 100 %
RATED
CURRENT
(W)
AGENCY
CERTIFICATION
BOLTED SHORT
BLADE (US)
BOLTED LONG
BLADE (UL)
AC
DC AC DC AC DC cURus IEC* UL
30
PSR030US0040 PSR030UL0040 40 690 700 600 200 kA 150 kA 76 280 260 13 •
PSR030US0050 PSR030UL0050 50 690 700 600 200 kA 150 kA 110 598 384 16 •
PSR030US0063 PSR030UL0063 63 690 700 600 200 kA 150 kA 176 1023 640 20 •
PSR030US0080 PSR030UL0080 80 690 700 600 200 kA 150 kA 304 1728 1252 24 •
PSR030US0100 PSR030UL0100 100 690 700 600 200 kA 150 kA 437 2835 1575 28 •
PSR030US0125 PSR030UL0125 125 690 700 600 200 kA 150 kA 707 4684 2783 37 •
PSR030US0160 PSR030UL0160 160 690 700 600 200 kA 150 kA 1359 9114 5507 40 •
PSR030US0200 PSR030UL0200 200 690 700 600 200 kA 150 kA 3012 15169 14700 40 •
PSR030US0250 PSR030UL0250 250 690 700 600 200 kA 150 kA 4668 29952 20833 52 •
PSR030US0315 PSR030UL0315 315 690 700 600 200 kA 150 kA 7131 61830 31600 64 •
PSR030US0350 PSR030UL0350 350 690 700 600 200 kA 150 kA 12007 85320 49273 66 •
PSR030US0400 PSR030UL0400 400 690 700 600 200 kA 150 kA 16209 114750 63367 78 •
PSR030US0450 PSR030UL0450 450 690 700 600 200 kA 150 kA 23133 160110 93533 80 •
PSR030US0500 PSR030UL0500 500 690 700 600 200 kA 150 kA 31429 225180 137333 84 •
PSR030US0550 PSR030UL0550 550 690 700 600 200 kA 150 kA 44323 268920 145400 85 •
PSR030US0630 PSR030UL0630 630 690 700 550 200 kA 150 kA 57404 480010 267800 91 •
31
PSR031US0200 PSR031UL0200 200 690 700 600 200 kA 150 kA 1965 17334 16188 49 •
PSR031US0250 PSR031UL0250 250 690 700 600 200 kA 150 kA 3789 35343 21080 52 •
PSR031US0315 PSR031UL0315 315 690 700 600 200 kA 150 kA 6862 59130 30694 63 •
PSR031US0350 PSR031UL0350 350 690 700 600 200 kA 150 kA 9523 76140 40996 67 •
PSR031US0400 PSR031UL0400 400 690 700 600 200 kA 150 kA 14770 124335 64359 70 •
PSR031US0450 PSR031UL0450 450 690 700 600 200 kA 150 kA 22457 178200 97444 70 •
PSR031US0500 PSR031UL0500 500 690 700 600 200 kA 150 kA 29751 251505 125935 74 •
PSR031US0550 PSR031UL0550 550 690 700 600 200 kA 150 kA 42056 289170 171845 86 •
PSR031US0630 PSR031UL0630 630 690 700 600 200 kA 150 kA 73513 507465 276315 87 •
PSR031US0700 PSR031UL0700 700 690 700 600 200 kA 150 kA 98187 601425 337260 93 •
PSR031US0800 PSR031UL0800 800 690 700 600 200 kA 150 kA 137208 848880 502815 107 •
PSR031US0900 PSR031UL0900 900 550 600 550 200 kA 150 kA 155163 945100 631820 126 •
32
PSR032US0400 PSR032UL0400 400 690 700 600 200 kA 150 kA 11104 79650 44533 87 •
PSR032US0450 PSR032UL0450 450 690 700 600 200 kA 150 kA 15535 116100 65463 88 •
PSR032US0500 PSR032UL0500 500 690 700 600 200 kA 150 kA 21573 161460 88277 94 •
PSR032US0550 PSR032UL0550 550 690 700 600 200 kA 150 kA 26327 177660 107960 106 •
PSR032US0630 PSR032UL0630 630 690 700 600 200 kA 150 kA 34790 234900 156963 114 •
PSR032US0700 PSR032UL0700 700 690 700 600 200 kA 150 kA 51191 291870 209287 127 •
PSR032US0800 PSR032UL0800 800 690 700 600 200 kA 150 kA 60125 472770 249000 152 •
PSR032US0900 PSR032UL0900 900 690 700 600 200 kA 150 kA 107785 764100 404000 145 •
PSR032US1000 PSR032UL1000 1000 690 700 600 200 kA 150 kA 190102 933120 672333 149 •
PSR032US1100 PSR032UL1100 1100 690 700 600 200 kA 150 kA 225379 1247400 744000 161 •
PSR032US1250 PSR032UL1250 1250 550** 600** 550** 200 kA 150 kA 336661 1114994 1197000 166 •
PSR032US1400 PSR032UL1400 1400 450 500 450 200 kA 150 kA 551749 1611639 1865400 184 •
PSR032US1500 PSR032UL1500 1500 450 500 450 200 kA 150 kA 673360 2045907 1735500 192 •
33
PSR033US0450 PSR033UL0450 450 690 700 600 200 kA 150 kA 13600 106380 58947 107 •
PSR033US0500 PSR033UL0500 500 690 700 600 200 kA 150 kA 16434 140400 77846 107 •
PSR033US0550 PSR033UL0550 550 690 700 600 200 kA 150 kA 23314 187650 100461 111 •
PSR033US0630 PSR033UL0630 630 690 700 600 200 kA 150 kA 38727 285930 142437 120 •
PSR033US0700 PSR033UL0700 700 690 700 600 200 kA 150 kA 56763 392580 209863 116 •
PSR033US0800 PSR033UL0800 800 690 700 600 200 kA 150 kA 84691 575505 348500 122 •
PSR033US0900 PSR033UL0900 900 690 700 600 200 kA 150 kA 122619 740340 451177 138 •
PSR033US1000 PSR033UL1000 1000 690 700 600 200 kA 150 kA 222350 1170450 787750 138 •
PSR033US1100 PSR033UL1100 1100 690 700 600 200 kA 150 kA 310824 1568700 821400 138 •
PSR033US1250 PSR033UL1250 1250 690 700 500 200 kA 150 kA 476902 2403000 1674333 145 •
PSR033US1400 PSR033UL1400 1400 690 700 500 200 kA 150 kA 583552 2920050 1979750 173 •
PSR033US1500 PSR033UL1500 1500 600 650 500 200 kA 150 kA 674538 2433200 1996733 182 •
PSR033US1600 PSR033UL1600 1600 600 650 500 200 kA 150 kA 779948 2942800 2301633 208 •
PSR033US1800 PSR033UL1800 1800 600 650 500 200 kA 150 kA 952196 3785040 2724180 260 •
PSR033US2000 PSR033UL2000 2000 550 600 480 200 kA 150 kA 1234315 4131600 3755180 264 •
PSR033US2250 PSR033UL2250 2250 500 550 450 200 kA 150 kA 1236000 4459651 3859500 349 •
* Electrical compliance to IEC 60269-4
** Littelfuse self-certified
110
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
Electrical Characteristics (cont.)
PSR SERIES HIGH-SPEED SQUARE BODY BOLTED BLADE
* Electrical compliance to IEC 60269-4
** Littelfuse self-certified
CASE
SIZE
CATALOG NUMBER
AMPERE
RATING (A)
VOLTAGE
RATING (V)
INTERRUPTING
RATING MELTING
(PRE-ARC)
I
2
T (A2
S)
TOTAL CLEARING
I
2
T (A2
S) AT
RATED VOLTAGE
WATT LOSS
AT 100 %
RATED
CURRENT
(W)
AGENCY
CERTIFICATION
BOLTED LONG
BLADE (UL)
AC DC AC DC AC DC cURus IEC* UL
70
PSR070UL0050 50 1250 1300 1000 100 kA 150 kA 177 2050 400 21 •
PSR070UL0063 63 1250 1300 1000 100 kA 150 kA 273 3399 900 24 •
PSR070UL0080 80 1250 1300 1000 100 kA 150 kA 583 6732 2200 25 •
PSR070UL0100 100 1250 1300 1000 100 kA 150 kA 974 10996 3750 30 •
PSR070UL0125 125 1250 1300 1000 100 kA 150 kA 1352 13011 5150 44 •
PSR070UL0160 160 1250 1300 1000 100 kA 150 kA 2377 25662 8950 53 •
PSR070UL0200 200 1250 1300 1000 100 kA 150 kA 4177 39087 17267 62 •
PSR070UL0250 250 1250 1300 1000 100 kA 150 kA 8629 89790 36750 73 •
PSR070UL0280 280 1250 1300 1000 100 kA 150 kA 11844 113201 46750 77 •
PSR070UL0315 315 1250 1300 1000 100 kA 150 kA 18162 142051 66833 80 •
PSR070UL0350 350 1250** 1300** 1000** 100 kA 150 kA 22963 215230 95410 76 •
PSR070UL0400 400 1100 1200 900 100 kA 150 kA 37103 283480 154320 78 •
71
PSR071UL0160 160 1250 1300 1000 100 kA 150 kA 2756 24600 8800 45 •
PSR071UL0200 200 1250 1300 1000 100 kA 150 kA 4918 50307 19050 52 •
PSR071UL0250 250 1250 1300 1000 100 kA 150 kA 10592 104427 43100 55 •
PSR071UL0280 280 1250 1300 1000 100 kA 150 kA 13763 131897 54150 58 •
PSR071UL0315 315 1250 1300 1000 100 kA 150 kA 20882 200244 67450 59 •
PSR071UL0350 350 1250 1300 1000 100 kA 150 kA 23301 225500 102500 70 •
PSR071UL0400 400 1250 1300 1000 100 kA 150 kA 43211 374986 185000 76 •
PSR071UL0450 450 1250 1300 1000 100 kA 150 kA 55915 452394 241333 88 •
PSR071UL0500 500 1100 1200 900 100 kA 150 kA 75315 468845 253960 93 •
PSR071UL0550 550 1100 1200 900 100 kA 150 kA 87328 693507 332600 90 •
PSR071UL0630 630 1000 1100 900 100 kA 150 kA 131240 790862 426550 103 •
72
PSR072UL0250 250 1250 1300 1000 100 kA 150 kA 7737 72789 28567 64 •
PSR072UL0280 280 1250 1300 1000 100 kA 150 kA 10915 124538 46897 62 •
PSR072UL0315 315 1250 1300 1000 100 kA 150 kA 16187 145140 58867 69 •
PSR072UL0350 350 1250 1300 1000 100 kA 150 kA 18727 160447 69633 81 •
PSR072UL0400 400 1250 1300 1000 100 kA 150 kA 27112 243540 108000 93 •
PSR072UL0450 450 1250 1300 1000 100 kA 150 kA 35927 406413 159133 107 •
PSR072UL0500 500 1250 1300 1000 100 kA 150 kA 50398 425375 216333 115 •
PSR072UL0550 550 1250 1300 1000 100 kA 150 kA 73858 539833 271333 115 •
PSR072UL0630 630 1250 1300 1000 100 kA 150 kA 126126 942180 436000 119 •
PSR072UL0700 700 1100 1200 900** 100 kA 150 kA 228761 1123694 715180 89 •
PSR072UL0800 800 1100 1200 900** 100 kA 150 kA 230695 1432388 911650 129 •
PSR072UL0900 900 1000** 1100** 900** 100 kA 150 kA 376641 1309993 1030400 131 •
PSR072UL1000 1000 850 900 800** 100 kA 150 kA 455955 1772548 1361500 156 •
73
PSR073UL0315 315 1250 1300 1000 100 kA 150 kA 10245 106600 38650 100 •
PSR073UL0350 350 1250 1300 1000 100 kA 150 kA 13586 159627 57467 100 •
PSR073UL0400 400 1250 1300 1000 100 kA 150 kA 19797 211273 86800 124 •
PSR073UL0450 450 1250 1300 1000 100 kA 150 kA 29834 279073 114333 122 •
PSR073UL0500 500 1250 1300 1000 100 kA 150 kA 42751 416437 184500 121 •
PSR073UL0550 550 1250 1300 1000 100 kA 150 kA 55513 491713 224500 130 •
PSR073UL0630 630 1250 1300 1000 100 kA 150 kA 94649 804338 377500 136 •
PSR073UL0700 700 1250 1300 1000 100 kA 150 kA 158097 1170960 575667 135 •
PSR073UL0800 800 1250 1300 800** 100 kA 150 kA 234943 1769880 699850 128 •
PSR073UL0900 900 950 1050 800** 100 kA 150 kA 317743 2280547 901779 156 •
PSR073UL1000 1000 950 1050 800** 100 kA 150 kA 476221 3910801 1546418 143 •
PSR073UL1100 1100 950 1050 800** 100 kA 150 kA 570870 2736600 1699000 165 •
PSR073UL1250 1250 900 1000 - 100 kA - 993924 3091160 - 197 •
PSR073UL1400 1400 900 1000 - 100 kA - 1168091 3627820 - 249 •
111
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
Ordering Information
PSR SERIES HIGH-SPEED SQUARE BODY BOLTED BLADE
CASE
SIZE
BOLTED SHORT BLADE (US) BOLTED LONG BLADE (UL)
BOX QUANTITY CATALOG
NUMBER
ORDERING PART
NUMBER UPC CATALOG NUMBER ORDERING PART
NUMBER UPC
30
PSR030US0040 PSR030US0040Z 07945825195 PSR030UL0040 PSR030UL0040Z 07945825246 3 pcs/box
PSR030US0050 PSR030US0050Z 07945825196 PSR030UL0050 PSR030UL0050Z 07945825247 3 pcs/box
PSR030US0063 PSR030US0063Z 07945825197 PSR030UL0063 PSR030UL0063Z 07945825248 3 pcs/box
PSR030US0080 PSR030US0080Z 07945825198 PSR030UL0080 PSR030UL0080Z 07945825249 3 pcs/box
PSR030US0100 PSR030US0100Z 07945825199 PSR030UL0100 PSR030UL0100Z 07945825250 3 pcs/box
PSR030US0125 PSR030US0125Z 07945825200 PSR030UL0125 PSR030UL0125Z 07945825251 3 pcs/box
PSR030US0160 PSR030US0160Z 07945825201 PSR030UL0160 PSR030UL0160Z 07945825252 3 pcs/box
PSR030US0200 PSR030US0200Z 07945825202 PSR030UL0200 PSR030UL0200Z 07945825253 3 pcs/box
PSR030US0250 PSR030US0250Z 07945825203 PSR030UL0250 PSR030UL0250Z 07945825254 3 pcs/box
PSR030US0315 PSR030US0315Z 07945825204 PSR030UL0315 PSR030UL0315Z 07945825255 3 pcs/box
PSR030US0350 PSR030US0350Z 07945825205 PSR030UL0350 PSR030UL0350Z 07945825256 3 pcs/box
PSR030US0400 PSR030US0400Z 07945825206 PSR030UL0400 PSR030UL0400Z 07945825257 3 pcs/box
PSR030US0450 PSR030US0450Z 07945825207 PSR030UL0450 PSR030UL0450Z 07945825258 3 pcs/box
PSR030US0500 PSR030US0500Z 07945825208 PSR030UL0500 PSR030UL0500Z 07945825259 3 pcs/box
PSR030US0550 PSR030US0550Z 07945825209 PSR030UL0550 PSR030UL0550Z 07945825260 3 pcs/box
PSR030US0630 PSR030US0630Z 07945828549 PSR030UL0630 PSR030UL0630Z 07945827828 3 pcs/box
31
PSR031US0200 PSR031US0200Z 07945825210 PSR031UL0200 PSR031UL0200Z 07945825261 3 pcs/box
PSR031US0250 PSR031US0250Z 07945825211 PSR031UL0250 PSR031UL0250Z 07945825262 3 pcs/box
PSR031US0315 PSR031US0315Z 07945825212 PSR031UL0315 PSR031UL0315Z 07945825263 3 pcs/box
PSR031US0350 PSR031US0350Z 07945825213 PSR031UL0350 PSR031UL0350Z 07945825264 3 pcs/box
PSR031US0400 PSR031US0400Z 07945825214 PSR031UL0400 PSR031UL0400Z 07945825265 3 pcs/box
PSR031US0450 PSR031US0450Z 07945825215 PSR031UL0450 PSR031UL0450Z 07945825266 3 pcs/box
PSR031US0500 PSR031US0500Z 07945825216 PSR031UL0500 PSR031UL0500Z 07945825267 3 pcs/box
PSR031US0550 PSR031US0550Z 07945825217 PSR031UL0550 PSR031UL0550Z 07945825268 3 pcs/box
PSR031US0630 PSR031US0630Z 07945825218 PSR031UL0630 PSR031UL0630Z 07945825269 3 pcs/box
PSR031US0700 PSR031US0700Z 07945825219 PSR031UL0700 PSR031UL0700Z 07945825270 3 pcs/box
PSR031US0800 PSR031US0800Z 07945825220 PSR031UL0800 PSR031UL0800Z 07945825271 3 pcs/box
PSR031US0900 PSR031US0900Z 07945828550 PSR031UL0900 PSR031UL0900Z 07945827829 3 pcs/box
32
PSR032US0400 PSR032US0400X 07945825221 PSR032UL0400 PSR032UL0400X 07945825272 1 pc/box
PSR032US0450 PSR032US0450X 07945825222 PSR032UL0450 PSR032UL0450X 07945825273 1 pc/box
PSR032US0500 PSR032US0500X 07945825223 PSR032UL0500 PSR032UL0500X 07945825274 1 pc/box
PSR032US0550 PSR032US0550X 07945825224 PSR032UL0550 PSR032UL0550X 07945825275 1 pc/box
PSR032US0630 PSR032US0630X 07945825225 PSR032UL0630 PSR032UL0630X 07945825276 1 pc/box
PSR032US0700 PSR032US0700X 07945825226 PSR032UL0700 PSR032UL0700X 07945825277 1 pc/box
PSR032US0800 PSR032US0800X 07945825227 PSR032UL0800 PSR032UL0800X 07945825278 1 pc/box
PSR032US0900 PSR032US0900X 07945825228 PSR032UL0900 PSR032UL0900X 07945825279 1 pc/box
PSR032US1000 PSR032US1000X 07945825229 PSR032UL1000 PSR032UL1000X 07945825280 1 pc/box
PSR032US1100 PSR032US1100X 07945825230 PSR032UL1100 PSR032UL1100X 07945825281 1 pc/box
PSR032US1250 PSR032US1250X 07945828551 PSR032UL1250 PSR032UL1250X 07945827830 1 pc/box
PSR032US1400 PSR032US1400X 07945828552 PSR032UL1400 PSR032UL1400X 07945828531 1 pc/box
PSR032US1500 PSR032US1500X 07945828553 PSR032UL1500 PSR032UL1500X 07945828532 1 pc/box
33
PSR033US0450 PSR033US0450X 07945825231 PSR033UL0450 PSR033UL0450X 07945825282 1 pc/box
PSR033US0500 PSR033US0500X 07945825232 PSR033UL0500 PSR033UL0500X 07945825283 1 pc/box
PSR033US0550 PSR033US0550X 07945825233 PSR033UL0550 PSR033UL0550X 07945825284 1 pc/box
PSR033US0630 PSR033US0630X 07945825234 PSR033UL0630 PSR033UL0630X 07945825285 1 pc/box
PSR033US0700 PSR033US0700X 07945825235 PSR033UL0700 PSR033UL0700X 07945825286 1 pc/box
PSR033US0800 PSR033US0800X 07945825236 PSR033UL0800 PSR033UL0800X 07945825287 1 pc/box
PSR033US0900 PSR033US0900X 07945825237 PSR033UL0900 PSR033UL0900X 07945825288 1 pc/box
PSR033US1000 PSR033US1000X 07945825238 PSR033UL1000 PSR033UL1000X 07945825289 1 pc/box
PSR033US1100 PSR033US1100X 07945825239 PSR033UL1100 PSR033UL1100X 07945825290 1 pc/box
PSR033US1250 PSR033US1250X 07945825240 PSR033UL1250 PSR033UL1250X 07945825291 1 pc/box
PSR033US1400 PSR033US1400X 07945825241 PSR033UL1400 PSR033UL1400X 07945825292 1 pc/box
PSR033US1500 PSR033US1500X 07945825242 PSR033UL1500 PSR033UL1500X 07945825293 1 pc/box
PSR033US1600 PSR033US1600X 07945825243 PSR033UL1600 PSR033UL1600X 07945825294 1 pc/box
PSR033US1800 PSR033US1800X 07945825244 PSR033UL1800 PSR033UL1800X 07945825295 1 pc/box
PSR033US2000 PSR033US2000X 07945825245 PSR033UL2000 PSR033UL2000X 07945825296 1 pc/box
PSR033US2250 PSR033US2250X 07945828554 PSR033UL2250 PSR033UL2250X 07945828533 1 pc/box
112
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
Ordering Information (cont.)
PSR SERIES HIGH-SPEED SQUARE BODY BOLTED BLADE
CASE
SIZE
BOLTED LONG BLADE (UL)
BOX QUANTITY
CATALOG NUMBER ORDERING PART NUMBER UPC
70
PSR070UL0050 PSR070UL0050Z 07945825297 3 pcs/box
PSR070UL0063 PSR070UL0063Z 07945825298 3 pcs/box
PSR070UL0080 PSR070UL0080Z 07945825299 3 pcs/box
PSR070UL0100 PSR070UL0100Z 07945825300 3 pcs/box
PSR070UL0125 PSR070UL0125Z 07945825301 3 pcs/box
PSR070UL0160 PSR070UL0160Z 07945825302 3 pcs/box
PSR070UL0200 PSR070UL0200Z 07945825303 3 pcs/box
PSR070UL0250 PSR070UL0250Z 07945825304 3 pcs/box
PSR070UL0280 PSR070UL0280Z 07945825305 3 pcs/box
PSR070UL0315 PSR070UL0315Z 07945825306 3 pcs/box
PSR070UL0350 PSR070UL0350Z 07945828534 3 pcs/box
PSR070UL0400 PSR070UL0400Z 07945828535 3 pcs/box
71
PSR071UL0160 PSR071UL0160Z 07945825307 3 pcs/box
PSR071UL0200 PSR071UL0200Z 07945825308 3 pcs/box
PSR071UL0250 fPSR071UL0250Z 07945825309 3 pcs/box
PSR071UL0280 PSR071UL0280Z 07945825310 3 pcs/box
PSR071UL0315 PSR071UL0315Z 07945825311 3 pcs/box
PSR071UL0350 PSR071UL0350Z 07945825312 3 pcs/box
PSR071UL0400 PSR071UL0400Z 07945825313 3 pcs/box
PSR071UL0450 PSR071UL0450Z 07945825314 3 pcs/box
PSR071UL0500 PSR071UL0500Z 07945828536 3 pcs/box
PSR071UL0550 PSR071UL0550Z 07945828537 3 pcs/box
PSR071UL0630 PSR071UL0630Z 07945828538 3 pcs/box
72
PSR072UL0250 PSR072UL0250X 07945825315 1 pc/box
PSR072UL0280 PSR072UL0280X 07945825316 1 pc/box
PSR072UL0315 PSR072UL0315X 07945825317 1 pc/box
PSR072UL0350 PSR072UL0350X 07945825318 1 pc/box
PSR072UL0400 PSR072UL0400X 07945825319 1 pc/box
PSR072UL0450 PSR072UL0450X 07945825320 1 pc/box
PSR072UL0500 PSR072UL0500X 07945825321 1 pc/box
PSR072UL0550 PSR072UL0550X 07945825322 1 pc/box
PSR072UL0630 PSR072UL0630X 07945825323 1 pc/box
PSR072UL0700 PSR072UL0700X 07945828539 1 pc/box
PSR072UL0800 PSR072UL0800X 07945828540 1 pc/box
PSR072UL0900 PSR072UL0900X 07945828541 1 pc/box
PSR072UL1000 PSR072UL1000X 07945828542 1 pc/box
73
PSR073UL0315 PSR073UL0315X 07945825324 1 pc/box
PSR073UL0350 PSR073UL0350X 07945825325 1 pc/box
PSR073UL0400 PSR073UL0400X 07945825326 1 pc/box
PSR073UL0450 PSR073UL0450X 07945825327 1 pc/box
PSR073UL0500 PSR073UL0500X 07945825328 1 pc/box
PSR073UL0550 PSR073UL0550X 07945825329 1 pc/box
PSR073UL0630 PSR073UL0630X 07945825330 1 pc/box
PSR073UL0700 PSR073UL0700X 07945825331 1 pc/box
PSR073UL0800 PSR073UL0800X 07945828543 1 pc/box
PSR073UL0900 PSR073UL0900X 07945828544 1 pc/box
PSR073UL1000 PSR073UL1000X 07945828545 1 pc/box
PSR073UL1100 PSR073UL1100X 07945828546 1 pc/box
PSR073UL1250 PSR073UL1250X 07945828547 1 pc/box
PSR073UL1400 PSR073UL1400X 07945828548 1 pc/box
113
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
PSR SERIES HIGH-SPEED SQUARE BODY BOLTED BLADE
Dimensions (US and UL)
H
C E
B
D
A
F
I
J
71 LONG [UL] 157.0 (6.18) 51.5 (2.03) 51.5 (2.03) 57.5 (2.26) 25.0 (0.98) 72.2 (2.84) 84.9 (3.34) 6.0 (0.24) 112.5 (4.43) 12mm (1/2)
72 LONG [UL] 157.0 (6.18) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 25.0 (0.98) 72.8 (2.87) 93.4 (3.68) 6.0 (0.24) 112.5 (4.43) 12mm (1/2)
73 LONG [UL] 159.0 (6.26) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 36.0 (1.41) 73.2 (2.88) 106.9 (4.21) 6.0 (0.24) 115.5 (4.55) 14mm (9/16)
G
1/4" QC
TERMINAL
M4x0.7 THREAD
10.00 (.394)
STUD LENGTH
H
C E
B
D
A
F
I
J
71 LONG [UL] 157.0 (6.18) 51.5 (2.03) 51.5 (2.03) 57.5 (2.26) 25.0 (0.98) 72.2 (2.84) 84.9 (3.34) 6.0 (0.24) 112.5 (4.43) 12mm (1/2)
72 LONG [UL] 157.0 (6.18) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 25.0 (0.98) 72.8 (2.87) 93.4 (3.68) 6.0 (0.24) 112.5 (4.43) 12mm (1/2)
73 LONG [UL] 159.0 (6.26) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 36.0 (1.41) 73.2 (2.88) 106.9 (4.21) 6.0 (0.24) 115.5 (4.55) 14mm (9/16)
G
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
2 PSR BLADE CUSTOMER OUTLINE
Littelfuse
® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 11/6/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 2 OF 2
SCALE
PSR SERIES OUTLINE
NTS
- US BLADE
I RECOMMENDED
FASTENER
) 87.5 (3.44) 10mm (3/8)
) 88.5 (3.45) 12mm (1/2)
) 88.5 (3.45) 12mm (1/2)
) 91.5 (3.60) 14mm (9/16)
) 107.1 (4.22) 10mm (3/8)
) 110.3 (4.34) 12mm (1/2)
) 110.3 (4.34) 12mm (1/2)
) 110.5 (4.35) 14mm (9/16)
) 111.5 (4.39) 10mm (3/8)
) 112.5 (4.43) 12mm (1/2)
) 112.5 (4.43) 12mm (1/2)
) 115.5 (4.55) 14mm (9/16)
G
1/4" QC
TERMINAL VISUAL INDICATOR
M4x0.7 THREAD
10.00 (.394)
STUD LENGTH
H
C E
B
D
A
F
I
J
33 LONG [UL] 155.0 (6.10) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 36.0 (1.41) 49.2 (1.94) 106.9 (4.21) 6.0 (0.24) 110.5 (4.35) 14mm (9/16)
70 LONG [UL] 151.5 (5.97) 43.0 (1.69) 43.0 (1.69) 49.0 (1.93) 20.0 (0.79) 71.4 (2.81) 76.4 (3.01) 6.0 (0.24) 111.5 (4.39) 10mm (3/8)
71 LONG [UL] 157.0 (6.18) 51.5 (2.03) 51.5 (2.03) 57.5 (2.26) 25.0 (0.98) 72.2 (2.84) 84.9 (3.34) 6.0 (0.24) 112.5 (4.43) 12mm (1/2)
72 LONG [UL] 157.0 (6.18) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 25.0 (0.98) 72.8 (2.87) 93.4 (3.68) 6.0 (0.24) 112.5 (4.43) 12mm (1/2)
73 LONG [UL] 159.0 (6.26) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 36.0 (1.41) 73.2 (2.88) 106.9 (4.21) 6.0 (0.24) 115.5 (4.55) 14mm (9/16)
G
1/4" QC
TERMINAL
M4x0.7 THREAD
10.00 (.394)
STUD LENGTH
DIMENSIONS MM (IN)
CASE
SIZE
MOUNTING
STYLE A B C D E F G H I J RECOMMENDED
FASTENER
TIGHTENING
TORQUE
(REFERENCE
ONLY)
30
Short [US] 127.2
(5.01)
43.0
(1.69)
43.0
(1.69)
49.0
(1.93)
20.0
(0.79)
47.7
(1.88)
76.4
(3.01)
6.0
(0.24)
69.5
(2.74)
106.3
(4.19) 10 mm (3/8) 26 Nm
Long [UL] 148.0
(5.83)
43.0
(1.69)
43.0
(1.69)
49.0
(1.93)
20.0
(0.79)
47.7
(1.88)
76.4
(3.01)
6.0
(0.24)
88.5
(3.48)
125.8
(4.95) 10 mm (3/8) 26 Nm
31
Short [US] 133.2
(5.24)
51.5
(2.03)
51.5
(2.03)
57.5
(2.26)
25.0
(0.98)
49.2
(1.94)
84.9
(3.34)
6.0
(0.24)
68.8
(2.71)
108.3
(4.26) 12 mm (1/2) 64 Nm
Long [UL] 153.2
(6.03)
51.5
(2.03)
51.5
(2.03)
57.5
(2.26)
25.0
(0.98)
49.2
(1.94)
84.9
(3.34)
6.0
(0.24)
92.3
(3.63)
128.3
(5.05) 12 mm (1/2) 64 Nm
32
Short [US] 133.2
(5.24)
60.0
(2.36)
60.0
(2.36)
66.0
(2.60)
25.0
(0.98)
49.2
(1.94)
93.4
(3.68)
6.0
(0.24)
68.8
(2.71)
108.3
(4.26) 12 mm (1/2) 64 Nm
Long [UL] 153.2
(6.03)
60.0
(2.36)
60.0
(2.36)
66.0
(2.60)
25.0
(0.98)
49.2
(1.94)
93.4
(3.68)
6.0
(0.24)
92.3
(3.63)
128.3
(5.05) 12 mm (1/2) 64 Nm
33
Short [US] 135.4
(5.33)
73.5
(2.89)
73.5
(2.89)
79.5
(3.13)
36.0
(1.41)
50.2
(1.98)
106.9
(4.21)
6.0
(0.24)
75.8
(2.98)
107.3
(4.22) 14 mm (9/16) 92 Nm
Long [UL] 155.2
(6.11)
73.5
(2.89)
73.5
(2.89)
79.5
(3.13)
36.0
(1.41)
50.2
(1.98)
106.9
(4.21)
6.0
(0.24)
94.8
(3.73)
126.3
(4.97) 14 mm (9/16) 92 Nm
70 Long [UL] 151.2
(5.95)
43.0
(1.69)
43.0
(1.69)
49.0
(1.93)
20.0
(0.79)
71.7
(2.82)
76.4
(3.01)
6.0
(0.24)
92.8
(3.65)
130.3
(5.13) 10 mm (3/8) 26 Nm
71 Long [UL] 157.0
(6.18)
51.5
(2.03)
51.5
(2.03)
57.5
(2.26)
25.0
(0.98)
73.2
(2.88)
84.9
(3.34)
6.0
(0.24)
92.8
(3.65)
132.3
(5.21) 12 mm (1/2) 64 Nm
72 Long [UL] 157.2
(6.19)
60.0
(2.36)
60.0
(2.36)
66.0
(2.60)
25.0
(0.98)
73.2
(2.88)
93.4
(3.68)
6.0
(0.24)
92.8
(3.65)
132.3
(5.21) 12 mm (1/2) 64 Nm
73 Long [UL] 159.4
(6.28)
73.5
(2.89)
73.5
(2.89)
79.5
(3.13)
36.0
(1.41)
74.2
(2.92)
106.9
(4.21)
6.0
(0.24)
99.8
(3.93)
131.3
(5.17) 14 mm (9/16) 92 Nm
114
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
Specifications
Voltage Rating Ac: 450 V–1300 V
Dc: 450 V–1000 V
Amperage Rating 40 A–2250 A
Interrupting Rating Ac: 100 kA–200 kA
Dc: 150 kA
Time Constant 10 ms at IR
Microswitch Yes
Mounting DIN 43653 blade style
Material Body: ceramic
Contacts: plated copper
Approvals UL 248-13 Recognized (File: E71611)
C-UR-US (File: E71611)
IEC 60269-4 (Class aR)
CCC*
Environmental RoHS Compliant, REACH
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to +35 °C with relative humidity <65 %
Country of Origin Mexico
Description
Littelfuse PSR series high-speed square body fuses are
specially designed for protection of power semiconductor
devices such as diodes, triacs, IGBTs, SCRs, MOSFETs,
and other solid-state devices that are typically designed
into power conversion and power conditioning equipment.
Variable frequency drives, inverters, UPS, rectifiers, and
soft-starters are examples of typical equipment designed
with sensitive power semiconductor devices that cannot
withstand any line surge or overcurrent conditions and
require high-speed protection.
Littelfuse POWR-SPEED® PSR series products offer
optimized circuit protection at the extremely fast speed
required to protect modern day power conversion devices.
Available in DIN43653 blade style termination with visual
blown fuse indication standard on all fuses and optional
micro-switch for external indication.
Features/Benefits
Best in class dc performance
Extremely current limiting
Superior cycling capability
Global certification cURus, CCC*, IEC Visual and optional microswitch fuse blown indication
Low watt-loss design Compliance with US and Canadian requirements
Fast-acting Class aR performance
Applications
Power conversion devices (UPS, inverter,
rectifiers, drives) Dc systems (dc common bus, dc injection braking) Battery protection application (energy storage systems) Electric vehicle charging stations
Heaters and power supplies
Semiconductor Fuses • DIN 43653 Blade • 40 A—2250 A S
Ordering Part Number
PSR 030 DS 0550 Z
Termination
DS = DIN 80 mm fixing
DL = DIN 110 mm fixing
Case Size
30, 31, 32, 33, 70, 71, 72, 73
Amperage
Series
Packing Quantity
X = (1 pc/box)
Z = (3 pcs/box)
SERIES CASE
SIZE TERMINATION AMPERAGE CATALOG
NUMBER
ORDERING
PART NUMBER
PSR 030 DS 0550 PSR030DS0550 PSR030DS0550Z
Catalog Number
Recommended Accessories
Microswitch: MS3H1000C (Case Size 30 to 33)
MS7H1500C (Case Size 70 to 73)
Web Resources
Download technical documents: Littelfuse.com/PSR
Note: high-speed fuses are designed for fixed installations. They are not
intended for use in moving vehicle applications.
* Refer to CCC section of Electrical Characteristics table
115
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
Electrical Characteristics
PSR SERIES HIGH-SPEED SQUARE BODY DIN BLADE
CASE
SIZE
CATALOG NUMBER AMPERE
RATING (A)
VOLTAGE
RATING (V)
INTERRUPTING
RATING MELTING
(PRE-ARC)
I
2
T (A2
S)
TOTAL CLEARING
I
2
T (A2
S) AT
RATED VOLTAGE
WATT LOSS
AT 100 %
RATED
CURRENT (W)
AGENCY
CERTIFICATION
DIN 80 MM
FIXING (DS)
DIN 110 MM
FIXING (DL)
AC DC AC DC AC DC cURus CCC IEC UL
30
PSR030DS0040 PSR030DL0040 40 690 700 600 200 kA 150 kA 76 280 260 13 • •
PSR030DS0050 PSR030DL0050 50 690 700 600 200 kA 150 kA 110 598 384 16 • •
PSR030DS0063 PSR030DL0063 63 690 700 600 200 kA 150 kA 176 1023 640 20 • •
PSR030DS0080 PSR030DL0080 80 690 700 600 200 kA 150 kA 304 1728 1252 24 • •
PSR030DS0100 PSR030DL0100 100 690 700 600 200 kA 150 kA 437 2835 1575 28 • •
PSR030DS0125 PSR030DL0125 125 690 700 600 200 kA 150 kA 707 4684 2783 37 • •
PSR030DS0160 PSR030DL0160 160 690 700 600 200 kA 150 kA 1359 9114 5507 40 • •
PSR030DS0200 PSR030DL0200 200 690 700 600 200 kA 150 kA 3012 15169 14700 40 • •
PSR030DS0250 PSR030DL0250 250 690 700 600 200 kA 150 kA 4668 29952 20833 52 • •
PSR030DS0315 PSR030DL0315 315 690 700 600 200 kA 150 kA 7131 61830 31600 64 • •
PSR030DS0350 PSR030DL0350 350 690 700 600 200 kA 150 kA 12007 85320 49273 66 • •
PSR030DS0400 PSR030DL0400 400 690 700 600 200 kA 150 kA 16209 114750 63367 78 • •
PSR030DS0450 PSR030DL0450 450 690 700 600 200 kA 150 kA 23133 160110 93533 80 • •
PSR030DS0500 PSR030DL0500 500 690 700 600 200 kA 150 kA 31429 225180 137333 84 • •
PSR030DS0550 PSR030DL0550 550 690 700 600 200 kA 150 kA 44323 268920 145400 85 • •
PSR030DS0630 PSR030DL0630 630 690 700 550 200 kA 150 kA 57404 480010 267800 91 •
31
PSR031DS0200 PSR031DL0200 200 690 700 600 200 kA 150 kA 1965 17334 16188 49 • •
PSR031DS0250 PSR031DL0250 250 690 700 600 200 kA 150 kA 3789 35343 21080 52 • •
PSR031DS0315 PSR031DL0315 315 690 700 600 200 kA 150 kA 6862 59130 30694 63 • •
PSR031DS0350 PSR031DL0350 350 690 700 600 200 kA 150 kA 9523 76140 40996 67 • •
PSR031DS0400 PSR031DL0400 400 690 700 600 200 kA 150 kA 14770 124335 64359 70 • •
PSR031DS0450 PSR031DL0450 450 690 700 600 200 kA 150 kA 22457 178200 97444 70 • •
PSR031DS0500 PSR031DL0500 500 690 700 600 200 kA 150 kA 29751 251505 125935 74 • •
PSR031DS0550 PSR031DL0550 550 690 700 600 200 kA 150 kA 42056 289170 171845 86 • •
PSR031DS0630 PSR031DL0630 630 690 700 600 200 kA 150 kA 73513 507465 276315 87 • •
PSR031DS0700 PSR031DL0700 700 690 700 600 200 kA 150 kA 98187 601425 337260 93 • •
PSR031DS0800 PSR031DL0800 800 690 700 600 200 kA 150 kA 137208 848880 502815 107 • •
PSR031DS0900 PSR031DL0900 900 550 600 550 200 kA 150 kA 155163 945100 631820 126 •
32
PSR032DS0400 PSR032DL0400 400 690 700 600 200 kA 150 kA 11104 79650 44533 87 • •
PSR032DS0450 PSR032DL0450 450 690 700 600 200 kA 150 kA 15535 116100 65463 88 • •
PSR032DS0500 PSR032DL0500 500 690 700 600 200 kA 150 kA 21573 161460 88277 94 • •
PSR032DS0550 PSR032DL0550 550 690 700 600 200 kA 150 kA 26327 177660 107960 106 • •
PSR032DS0630 PSR032DL0630 630 690 700 600 200 kA 150 kA 34790 234900 156963 114 • •
PSR032DS0700 PSR032DL0700 700 690 700 600 200 kA 150 kA 51191 291870 209287 127 • •
PSR032DS0800 PSR032DL0800 800 690 700 600 200 kA 150 kA 60125 472770 249000 152 • •
PSR032DS0900 PSR032DL0900 900 690 700 600 200 kA 150 kA 107785 764100 404000 145 • •
PSR032DS1000 PSR032DL1000 1000 690 700 600 200 kA 150 kA 190102 933120 672333 149 • •
PSR032DS1100 PSR032DL1100 1100 690 700 600 200 kA 150 kA 225379 1247400 744000 161 • •
PSR032DS1250 PSR032DL1250 1250 550* 600* 550* 200 kA 150 kA 336661 1114994 1197000 166 •
PSR032DS1400 PSR032DL1400 1400 450 500 450 200 kA 150 kA 551749 1611639 1865400 184 •
PSR032DS1500 PSR032DL1500 1500 450 500 450 200 kA 150 kA 673360 2045907 1735500 192 •
33
PSR033DS0450 PSR033DL0450 450 690 700 600 200 kA 150 kA 13600 106380 58947 107 • •
PSR033DS0500 PSR033DL0500 500 690 700 600 200 kA 150 kA 16434 140400 77846 107 • •
PSR033DS0550 PSR033DL0550 550 690 700 600 200 kA 150 kA 23314 187650 100461 111 • •
PSR033DS0630 PSR033DL0630 630 690 700 600 200 kA 150 kA 38727 285930 142437 120 • •
PSR033DS0700 PSR033DL0700 700 690 700 600 200 kA 150 kA 56763 392580 209863 116 • •
PSR033DS0800 PSR033DL0800 800 690 700 600 200 kA 150 kA 84691 575505 348500 122 • •
PSR033DS0900 PSR033DL0900 900 690 700 600 200 kA 150 kA 122619 740340 451177 138 • •
PSR033DS1000 PSR033DL1000 1000 690 700 600 200 kA 150 kA 222350 1170450 787750 138 • •
PSR033DS1100 PSR033DL1100 1100 690 700 600 200 kA 150 kA 310824 1568700 821400 138 • •
PSR033DS1250 PSR033DL1250 1250 690 700 500 200 kA 150 kA 476902 2403000 1674333 145 • •
PSR033DS1400 PSR033DL1400 1400 690 700 500 200 kA 150 kA 583552 2920050 1979750 173 • •
PSR033DS1500 PSR033DL1500 1500 600 650 500 200 kA 150 kA 674538 2433200 1996733 182 • •
PSR033DS1600 PSR033DL1600 1600 600 650 500 200 kA 150 kA 779948 2942800 2301633 208 • •
PSR033DS1800 PSR033DL1800 1800 600 650 500 200 kA 150 kA 952196 3785040 2724180 260 • •
PSR033DS2000 PSR033DL2000 2000 550 600 480 200 kA 150 kA 1234315 4131600 3755180 264 • •
PSR033DS2250 PSR033DL2250 2250 500 550 450 200 kA 150 kA 1236000 4459651 3859500 349 •
116
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
Electrical Characteristics (cont.)
PSR SERIES HIGH-SPEED SQUARE BODY DIN BLADE
* Littelfuse self-certified
CASE
SIZE
CATALOG NUMBER
AMPERE
RATING (A)
VOLTAGE
RATING (V)
INTERRUPTING
RATING MELTING
(PRE-ARC)
I
2
T (A2
S)
TOTAL CLEARING
I
2
T (A2
S) AT
RATED VOLTAGE
WATT
LOSS
AT 100 %
RATED
CURRENT
(W)
AGENCY
CERTIFICATION
DIN 110 MM FIXING
(DL)
AC
DC AC DC AC DC cURus CCC
IEC UL
70
PSR070DL0050 50 1250 1300 1000 100 kA 150 kA 177 2050 400 21 • •
PSR070DL0063 63 1250 1300 1000 100 kA 150 kA 273 3399 900 24 • •
PSR070DL0080 80 1250 1300 1000 100 kA 150 kA 583 6732 2200 25 • •
PSR070DL0100 100 1250 1300 1000 100 kA 150 kA 974 10996 3750 30 • •
PSR070DL0125 125 1250 1300 1000 100 kA 150 kA 1352 13011 5150 44 • •
PSR070DL0160 160 1250 1300 1000 100 kA 150 kA 2377 25662 8950 53 • •
PSR070DL0200 200 1250 1300 1000 100 kA 150 kA 4177 39087 17267 62 • •
PSR070DL0250 250 1250 1300 1000 100 kA 150 kA 8629 89790 36750 73 • •
PSR070DL0280 280 1250 1300 1000 100 kA 150 kA 11844 113201 46750 77 • •
PSR070DL0315 315 1250 1300 1000 100 kA 150 kA 18162 142051 66833 80 • •
PSR070DL0350 350 1250* 1300* 1000* 100 kA 150 kA 22963 215230 95410 76 •
PSR070DL0400 400 1100 1200 900 100 kA 150 kA 37103 283480 154320 78 •
71
PSR071DL0160 160 1250 1300 1000 100 kA 150 kA 2756 24600 8800 45 • •
PSR071DL0200 200 1250 1300 1000 100 kA 150 kA 4918 50307 19050 52 • •
PSR071DL0250 250 1250 1300 1000 100 kA 150 kA 10592 104427 43100 55 • •
PSR071DL0280 280 1250 1300 1000 100 kA 150 kA 13763 131897 54150 58 • •
PSR071DL0315 315 1250 1300 1000 100 kA 150 kA 20882 200244 67450 59 • •
PSR071DL0350 350 1250 1300 1000 100 kA 150 kA 23301 225500 102500 70 • •
PSR071DL0400 400 1250 1300 1000 100 kA 150 kA 43211 374986 185000 76 • •
PSR071DL0450 450 1250 1300 1000 100 kA 150 kA 55915 452394 241333 88 • •
PSR071DL0500 500 1100 1200 900 100 kA 150 kA 75315 468845 253960 93 •
PSR071DL0550 550 1100 1200 900 100 kA 150 kA 87328 693507 332600 90 •
PSR071DL0630 630 1000 1100 900 100 kA 150 kA 131240 790862 426550 103 •
72
PSR072DL0250 250 1250 1300 1000 100 kA 150 kA 7737 72789 28567 64 • •
PSR072DL0280 280 1250 1300 1000 100 kA 150 kA 10915 124538 46897 62 • •
PSR072DL0315 315 1250 1300 1000 100 kA 150 kA 16187 145140 58867 69 • •
PSR072DL0350 350 1250 1300 1000 100 kA 150 kA 18727 160447 69633 81 • •
PSR072DL0400 400 1250 1300 1000 100 kA 150 kA 27112 243540 108000 93 • •
PSR072DL0450 450 1250 1300 1000 100 kA 150 kA 35927 406413 159133 107 • •
PSR072DL0500 500 1250 1300 1000 100 kA 150 kA 50398 425375 216333 115 • •
PSR072DL0550 550 1250 1300 1000 100 kA 150 kA 73858 539833 271333 115 • •
PSR072DL0630 630 1250 1300 1000 100 kA 150 kA 126126 942180 436000 119 • •
PSR072DL0700 700 1100 1200 900* 100 kA 150 kA 228761 1123694 715180 89 •
PSR072DL0800 800 1100 1200 900* 100 kA 150 kA 230695 1432388 911650 129 •
PSR072DL0900 900 1000* 1100* 900* 100 kA 150 kA 376641 1309993 1030400 131 •
PSR072DL1000 1000 850 900 800* 100 kA 150 kA 455955 1772548 1361500 156 •
73
PSR073DL0315 315 1250 1300 1000 100 kA 150 kA 10245 106600 38650 100 • •
PSR073DL0350 350 1250 1300 1000 100 kA 150 kA 13586 159627 57467 100 • •
PSR073DL0400 400 1250 1300 1000 100 kA 150 kA 19797 211273 86800 124 • •
PSR073DL0450 450 1250 1300 1000 100 kA 150 kA 29834 279073 114333 122 • •
PSR073DL0500 500 1250 1300 1000 100 kA 150 kA 42751 416437 184500 121 • •
PSR073DL0550 550 1250 1300 1000 100 kA 150 kA 55513 491713 224500 130 • •
PSR073DL0630 630 1250 1300 1000 100 kA 150 kA 94649 804338 377500 136 • •
PSR073DL0700 700 1250 1300 1000 100 kA 150 kA 158097 1170960 575667 135 • •
PSR073DL0800 800 1250 1300 800* 100 kA 150 kA 234943 1769880 699850 128 •
PSR073DL0900 900 950 1050 800* 100 kA 150 kA 317743 2280547 901779 156 •
PSR073DL1000 1000 950 1050 800* 100 kA 150 kA 476221 3910801 1546418 143 •
PSR073DL1100 1100 950 1050 800* 100 kA 150 kA 570870 2736600 1699000 165 •
PSR073DL1250 1250 900 1000 - 100 kA - 993924 3091160 - 197 •
PSR073DL1400 1400 900 1000 - 100 kA - 1168091 3627820 - 249 •
117
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
Ordering Information
PSR SERIES HIGH-SPEED SQUARE BODY DIN BLADE
CASE
SIZE
DIN 80 MM FIXING (DS) DIN 110 MM FIXING (DL)
BOX QUANTITY
CATALOG
NUMBER
ORDERING PART
NUMBER UPC CATALOG NUMBER ORDERING PART
NUMBER UPC
30
PSR030DS0040 PSR030DS0040Z 07945824985 PSR030DL0040 PSR030DL0040Z 07945825049 3 pcs/box
PSR030DS0050 PSR030DS0050Z 07945824986 PSR030DL0050 PSR030DL0050Z 07945825050 3 pcs/box
PSR030DS0063 PSR030DS0063Z 07945824987 PSR030DL0063 PSR030DL0063Z 07945825051 3 pcs/box
PSR030DS0080 PSR030DS0080Z 07945824988 PSR030DL0080 PSR030DL0080Z 07945825052 3 pcs/box
PSR030DS0100 PSR030DS0100Z 07945824989 PSR030DL0100 PSR030DL0100Z 07945825054 3 pcs/box
PSR030DS0125 PSR030DS0125Z 07945824990 PSR030DL0125 PSR030DL0125Z 07945825056 3 pcs/box
PSR030DS0160 PSR030DS0160Z 07945824991 PSR030DL0160 PSR030DL0160Z 07945825057 3 pcs/box
PSR030DS0200 PSR030DS0200Z 07945824992 PSR030DL0200 PSR030DL0200Z 07945825059 3 pcs/box
PSR030DS0250 PSR030DS0250Z 07945824993 PSR030DL0250 PSR030DL0250Z 07945825060 3 pcs/box
PSR030DS0315 PSR030DS0315Z 07945824994 PSR030DL0315 PSR030DL0315Z 07945825062 3 pcs/box
PSR030DS0350 PSR030DS0350Z 07945824995 PSR030DL0350 PSR030DL0350Z 07945825066 3 pcs/box
PSR030DS0400 PSR030DS0400Z 07945824996 PSR030DL0400 PSR030DL0400Z 07945825069 3 pcs/box
PSR030DS0450 PSR030DS0450Z 07945824997 PSR030DL0450 PSR030DL0450Z 07945825070 3 pcs/box
PSR030DS0500 PSR030DS0500Z 07945824998 PSR030DL0500 PSR030DL0500Z 07945825074 3 pcs/box
PSR030DS0550 PSR030DS0550Z 07945824999 PSR030DL0550 PSR030DL0550Z 07945825075 3 pcs/box
PSR030DS0630 PSR030DS0630Z 07945827822 PSR030DL0630 PSR030DL0630Z 07945827801 3 pcs/box
31
PSR031DS0200 PSR031DS0200Z 07945825000 PSR031DL0200 PSR031DL0200Z 07945825076 3 pcs/box
PSR031DS0250 PSR031DS0250Z 07945825001 PSR031DL0250 PSR031DL0250Z 07945825077 3 pcs/box
PSR031DS0315 PSR031DS0315Z 07945825002 PSR031DL0315 PSR031DL0315Z 07945825078 3 pcs/box
PSR031DS0350 PSR031DS0350Z 07945825003 PSR031DL0350 PSR031DL0350Z 07945825079 3 pcs/box
PSR031DS0400 PSR031DS0400Z 07945825004 PSR031DL0400 PSR031DL0400Z 07945825080 3 pcs/box
PSR031DS0450 PSR031DS0450Z 07945825005 PSR031DL0450 PSR031DL0450Z 07945825081 3 pcs/box
PSR031DS0500 PSR031DS0500Z 07945825006 PSR031DL0500 PSR031DL0500Z 07945825082 3 pcs/box
PSR031DS0550 PSR031DS0550Z 07945825007 PSR031DL0550 PSR031DL0550Z 07945825083 3 pcs/box
PSR031DS0630 PSR031DS0630Z 07945825008 PSR031DL0630 PSR031DL0630Z 07945825084 3 pcs/box
PSR031DS0700 PSR031DS0700Z 07945825009 PSR031DL0700 PSR031DL0700Z 07945825085 3 pcs/box
PSR031DS0800 PSR031DS0800Z 07945825010 PSR031DL0800 PSR031DL0800Z 07945825086 3 pcs/box
PSR031DS0900 PSR031DS0900Z 07945827823 PSR031DL0900 PSR031DL0900Z 07945827802 3 pcs/box
32
PSR032DS0400 PSR032DS0400X 07945825013 PSR032DL0400 PSR032DL0400X 07945825087 1 pc/box
PSR032DS0450 PSR032DS0450X 07945825014 PSR032DL0450 PSR032DL0450X 07945825088 1 pc/box
PSR032DS0500 PSR032DS0500X 07945825015 PSR032DL0500 PSR032DL0500X 07945825089 1 pc/box
PSR032DS0550 PSR032DS0550X 07945825016 PSR032DL0550 PSR032DL0550X 07945825090 1 pc/box
PSR032DS0630 PSR032DS0630X 07945825017 PSR032DL0630 PSR032DL0630X 07945825091 1 pc/box
PSR032DS0700 PSR032DS0700X 07945825021 PSR032DL0700 PSR032DL0700X 07945825092 1 pc/box
PSR032DS0800 PSR032DS0800X 07945825022 PSR032DL0800 PSR032DL0800X 07945825141 1 pc/box
PSR032DS0900 PSR032DS0900X 07945825023 PSR032DL0900 PSR032DL0900X 07945825142 1 pc/box
PSR032DS1000 PSR032DS1000X 07945825025 PSR032DL1000 PSR032DL1000X 07945825143 1 pc/box
PSR032DS1100 PSR032DS1100X 07945825026 PSR032DL1100 PSR032DL1100X 07945825144 1 pc/box
PSR032DS1250 PSR032DS1250X 07945827824 PSR032DL1250 PSR032DL1250X 07945827803 1 pc/box
PSR032DS1400 PSR032DS1400X 07945827825 PSR032DL1400 PSR032DL1400X 07945827804 1 pc/box
PSR032DS1500 PSR032DS1500X 07945827826 PSR032DL1500 PSR032DL1500X 07945827805 1 pc/box
33
PSR033DS0450 PSR033DS0450X 07945825027 PSR033DL0450 PSR033DL0450X 07945825145 1 pc/box
PSR033DS0500 PSR033DS0500X 07945825028 PSR033DL0500 PSR033DL0500X 07945825146 1 pc/box
PSR033DS0550 PSR033DS0550X 07945825030 PSR033DL0550 PSR033DL0550X 07945825147 1 pc/box
PSR033DS0630 PSR033DS0630X 07945825032 PSR033DL0630 PSR033DL0630X 07945825148 1 pc/box
PSR033DS0700 PSR033DS0700X 07945825033 PSR033DL0700 PSR033DL0700X 07945825149 1 pc/box
PSR033DS0800 PSR033DS0800X 07945825034 PSR033DL0800 PSR033DL0800X 07945825150 1 pc/box
PSR033DS0900 PSR033DS0900X 07945825035 PSR033DL0900 PSR033DL0900X 07945825151 1 pc/box
PSR033DS1000 PSR033DS1000X 07945825036 PSR033DL1000 PSR033DL1000X 07945825152 1 pc/box
PSR033DS1100 PSR033DS1100X 07945825038 PSR033DL1100 PSR033DL1100X 07945825153 1 pc/box
PSR033DS1250 PSR033DS1250X 07945825039 PSR033DL1250 PSR033DL1250X 07945825154 1 pc/box
PSR033DS1400 PSR033DS1400X 07945825040 PSR033DL1400 PSR033DL1400X 07945825155 1 pc/box
PSR033DS1500 PSR033DS1500X 07945825042 PSR033DL1500 PSR033DL1500X 07945825156 1 pc/box
PSR033DS1600 PSR033DS1600X 07945825044 PSR033DL1600 PSR033DL1600X 07945825157 1 pc/box
PSR033DS1800 PSR033DS1800X 07945825045 PSR033DL1800 PSR033DL1800X 07945825158 1 pc/box
PSR033DS2000 PSR033DS2000X 07945825046 PSR033DL2000 PSR033DL2000X 07945825159 1 pc/box
PSR033DS2250 PSR033DS2250X 07945827827 PSR033DL2250 PSR033DL2250X 07945827806 1 pc/box
118
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
Ordering Information (cont.)
PSR SERIES HIGH-SPEED SQUARE BODY DIN BLADE
CASE
SIZE
DIN 110 MM FIXING (DL)
BOX QUANTITY
CATALOG NUMBER ORDERING PART NUMBER UPC
70
PSR070DL0050 PSR070DL0050Z 07945825160 3 pcs/box
PSR070DL0063 PSR070DL0063Z 07945825161 3 pcs/box
PSR070DL0080 PSR070DL0080Z 07945825162 3 pcs/box
PSR070DL0100 PSR070DL0100Z 07945825163 3 pcs/box
PSR070DL0125 PSR070DL0125Z 07945825164 3 pcs/box
PSR070DL0160 PSR070DL0160Z 07945825165 3 pcs/box
PSR070DL0200 PSR070DL0200Z 07945825166 3 pcs/box
PSR070DL0250 PSR070DL0250Z 07945825167 3 pcs/box
PSR070DL0280 PSR070DL0280Z 07945825168 3 pcs/box
PSR070DL0315 PSR070DL0315Z 07945825169 3 pcs/box
PSR070DL0350 PSR070DL0350Z 07945827807 3 pcs/box
PSR070DL0400 PSR070DL0400Z 07945827808 3 pcs/box
71
PSR071DL0160 PSR071DL0160Z 07945825170 3 pcs/box
PSR071DL0200 PSR071DL0200Z 07945825171 3 pcs/box
PSR071DL0250 PSR071DL0250Z 07945825172 3 pcs/box
PSR071DL0280 PSR071DL0280Z 07945825173 3 pcs/box
PSR071DL0315 PSR071DL0315Z 07945825174 3 pcs/box
PSR071DL0350 PSR071DL0350Z 07945825175 3 pcs/box
PSR071DL0400 PSR071DL0400Z 07945825176 3 pcs/box
PSR071DL0450 PSR071DL0450Z 07945825177 3 pcs/box
PSR071DL0500 PSR071DL0500Z 07945827809 3 pcs/box
PSR071DL0550 PSR071DL0550Z 07945827810 3 pcs/box
PSR071DL0630 PSR071DL0630Z 07945827811 3 pcs/box
72
PSR072DL0250 PSR072DL0250X 07945825178 1 pc/box
PSR072DL0280 PSR072DL0280X 07945825179 1 pc/box
PSR072DL0315 PSR072DL0315X 07945825180 1 pc/box
PSR072DL0350 PSR072DL0350X 07945825181 1 pc/box
PSR072DL0400 PSR072DL0400X 07945825182 1 pc/box
PSR072DL0450 PSR072DL0450X 07945825183 1 pc/box
PSR072DL0500 PSR072DL0500X 07945825184 1 pc/box
PSR072DL0550 PSR072DL0550X 07945825185 1 pc/box
PSR072DL0630 PSR072DL0630X 07945825186 1 pc/box
PSR072DL0700 PSR072DL0700X 07945827812 1 pc/box
PSR072DL0800 PSR072DL0800X 07945827813 1 pc/box
PSR072DL0900 PSR072DL0900X 07945827814 1 pc/box
PSR072DL1000 PSR072DL1000X 07945827815 1 pc/box
73
PSR073DL0315 PSR073DL0315X 07945825187 1 pc/box
PSR073DL0350 PSR073DL0350X 07945825188 1 pc/box
PSR073DL0400 PSR073DL0400X 07945825189 1 pc/box
PSR073DL0450 PSR073DL0450X 07945825190 1 pc/box
PSR073DL0500 PSR073DL0500X 07945825191 1 pc/box
PSR073DL0550 PSR073DL0550X 07945825192 1 pc/box
PSR073DL0630 PSR073DL0630X 07945825193 1 pc/box
PSR073DL0700 PSR073DL0700X 07945825194 1 pc/box
PSR073DL0800 PSR073DL0800X 07945827816 1 pc/box
PSR073DL0900 PSR073DL0900X 07945827817 1 pc/box
PSR073DL1000 PSR073DL1000X 07945827818 1 pcsbox
PSR073DL1100 PSR073DL1100X 07945827819 1 pc/box
PSR073DL1250 PSR073DL1250X 07945827820 1 pc/box
PSR073DL1400 PSR073DL1400X 07945827821 1 pc/box
119
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
Dimensions (DS and DL)
32 DIN 110 [DL] 133.0 (5.24) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 25.0 (0.98) 48.8 (1.92) 93.4 (3.68) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
33 DIN 110 [DL] 133.0 (5.24) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 36.0 (1.41) 49.2 (1.94) 106.9 (4.21) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
70 DIN 110 [DL] 133.0 (5.24) 43.0 (1.69) 43.0 (1.69) 49.0 (1.93) 20.0 (0.79) 71.4 (2.81) 76.4 (3.01) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
71 DIN 110 [DL] 133.0 (5.24) 51.5 (2.03) 51.5 (2.03) 57.5 (2.26) 25.0 (0.98) 72.2 (2.84) 84.9 (3.34) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
72 DIN 110 [DL] 133.0 (5.24) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 25.0 (0.98) 72.8 (2.87) 93.4 (3.68) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
73 DIN 110 [DL] 133.0 (5.24) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 36.0 (1.41) 73.2 (2.88) 106.9 (4.21) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
C
B D
H
G
1/4" QC
TERMINAL
M4x0.7 THREAD
10.00 (.394)
STUD LENGTH
E
A
I
F
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
2 PSR BLADE CUSTOMER OUTLINE
Littelfuse
® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 11/6/2018
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 2
SCALE
PSR SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
1 11/6/18 DRAWING CREATED MRY
M(IN) 2 11/8/18 UPDATE TABLE, ADD VIEWS MRY
EF G H I RECOMMENDED
FASTENER
(0.79) 47.4 (1.86) 76.4 (3.01) 6.0 (0.24) 80.0 (3.15) 10mm (3/8)
(0.98) 48.2 (1.90) 84.9 (3.34) 6.0 (0.24) 80.0 (3.15) 10mm (3/8)
(0.98) 48.8 (1.92) 93.4 (3.68) 6.0 (0.24) 80.0 (3.15) 10mm (3/8)
(1.41) 49.2 (1.94) 106.9 (4.21) 6.0 (0.24) 80.0 (3.15) 10mm (3/8)
(0.79) 47.4 (1.86) 76.4 (3.01) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
(0.98) 48.2 (1.90) 84.9 (3.34) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
(0.98) 48.8 (1.92) 93.4 (3.68) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
(1.41) 49.2 (1.94) 106.9 (4.21) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
(0.79) 71.4 (2.81) 76.4 (3.01) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
(0.98) 72.2 (2.84) 84.9 (3.34) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
(0.98) 72.8 (2.87) 93.4 (3.68) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
(1.41) 73.2 (2.88) 106.9 (4.21) 6.0 (0.24) 110.0 (4.33) 10mm (3/8)
- DIN BLADE
G
1/4" QC
TERMINAL
VISUAL INDICATOR
M4x0.7 THREAD
10.00 (.394)
STUD LENGTH
A
I
F
DIMENSIONS MM (IN)
CASE
SIZE
MOUNTING
STYLE A B C D E F G H I RECOMMENDED
FASTENER
TIGHTENING
TORQUE
(REFERENCE
ONLY)
30
DIN 80 [DS] 109.0 (4.29) 43.0 (1.69) 43.0 (1.69) 49.0 (1.93) 20.0 (0.79) 47.7 (1.88) 76.4 (3.01) 6.0 (0.24) 77.8 (3.06) 10 mm (3/8) 26 Nm
DIN 110 [DL] 132.5 (5.22) 43.0 (1.69) 43.0 (1.69) 49.0 (1.93) 20.0 (0.79) 47.7 (1.88) 76.4 (3.01) 6.0 (0.24) 101.8 (4.01) 10 mm (3/8) 26 Nm
31
DIN 80 [DS] 109.2 (4.30) 51.5 (2.03) 51.5 (2.03) 57.5 (2.26) 25.0 (0.98) 49.2 (1.94) 84.9 (3.34) 6.0 (0.24) 77.8 (3.06) 10 mm (3/8) 26 Nm
DIN 110 [DL] 133.2 (5.24) 51.5 (2.03) 51.5 (2.03) 57.5 (2.26) 25.0 (0.98) 49.2 (1.94) 84.9 (3.34) 6.0 (0.24) 101.8 (4.01) 10 mm (3/8) 26 Nm
32
DIN 80 [DS] 109.2 (4.30) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 25.0 (0.98) 49.2 (1.94) 93.4 (3.68) 6.0 (0.24) 77.8 (3.06) 10 mm (3/8) 26 Nm
DIN 110 [DL] 133.2 (5.24) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 25.0 (0.98) 49.2 (1.94) 93.4 (3.68) 6.0 (0.24) 101.8 (4.01) 10 mm (3/8) 26 Nm
33
DIN 80 [DS] 109.2 (4.30) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 36.0 (1.41) 50.2 (1.98) 106.9(4.21) 6.0 (0.24) 77.8 (3.06) 10 mm (3/8) 26 Nm
DIN 110 [DL] 133.2 (5.24) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 36.0 (1.41) 50.2 (1.98) 106.9 (4.21) 6.0 (0.24) 101.8 (4.01) 10 mm (3/8) 26 Nm
70 DIN 110 [DL] 133.0 (5.24) 43.0 (1.69) 43.0 (1.69) 49.0 (1.93) 20.0 (0.79) 71.7 (2.82) 76.4 (3.01) 6.0 (0.24) 101.8 (4.01) 10 mm (3/8) 26 Nm
71 DIN 110 [DL] 133.2 (5.24) 51.5 (2.03) 51.5 (2.03) 57.5 (2.26) 25.0 (0.98) 73.2 (2.88) 84.9 (3.34) 6.0 (0.24) 101.8 (4.01) 10 mm (3/8) 26 Nm
72 DIN 110 [DL] 133.2 (5.24) 60.0 (2.36) 60.0 (2.36) 66.0 (2.60) 25.0 (0.98) 73.2 (2.88) 93.4 (3.68) 6.0 (0.24) 101.8 (4.01) 10 mm (3/8) 26 Nm
73 DIN 110 [DL] 133.2 (5.24) 73.5 (2.89) 73.5 (2.89) 79.5 (3.13) 36.0 (1.41) 74.2 (2.92) 106.9 (4.21) 6.0 (0.24) 101.8 (4.01) 10 mm (3/8) 26 Nm
120
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
MS SERIES HIGH-SPEED FUSE MICROSWITCH
Microswitch for Square Body Fuse
Description
Littelfuse MS series external mount microswitches offer
permanent blown fuse indication to PSR and PSX series
high-speed square-body semiconductor fuses. They have
one normally open (N.O.) and one normally closed (N.C.)
contact rated for 4 A, 250 V ac.
These microswitches have a visual red flap or arm indicator
that releases after fuse blown condition and can also be
used for resetting the microswitch contacts.
Features/Benefits
Available in three sizes to fit PSR and PSX series fuses
Internal microswitch UL recognized
Red flap visual indicator and contact reset mechanism
Electrical Characteristics
Specifications
Voltage Rating See Electrical Characteristics table
Amperage Rating See Electrical Characteristics table
Operating Temperature -10 °C to +125 °C
Relative Humidity 85 %
Contact Silver-nickel plated copper
Approvals Internal microswitch part number:
MS1-16Z0-A150, recognized under
UL File: E176213
Flammability UL 94 V0
Environmental RoHS Compliant
Country of Origin China
CATALOG
NUMBER
ORDERING
NUMBER INDICATING STYLE INSULATION
VOLTAGE RATING
COMPATIBLE
FUSE SERIES FUSE CASE SIZE
NON-INDUCTIVE LOAD
PACK
30 V QUANTITY
DC
125 V
AC
250 V
AC
MS3H1000C MS3H1000C Standard NO-NC 1000 PSR 30, 31, 32, 33 10 A 16 A 4 A 3 Pcs/Bag
MS7H1500C MS7H1500C Standard NO-NC 1500 PSR 70, 71, 72, 73 10 A 16 A 4 A 3 Pcs/Bag
MSXL2000C MSXL2000C Standard NO-NC 2000 PSX 1XL, 3XL 10 A 16 A 4 A 1 Pcs/Bag
121
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
42.00 [1.654]
117.09 [4.610]
42.00 [1.654]
39.00 [1.535]
42.00 [1.654]
63.00 [2.480]
MS3H1000C
32.35 [1.274]
23.05
[0.907]
10.35 [0.407]
15.95 [0.628]
16.04 [0.631]
10.02 [0.394] REF
WHEN OPEN
2.34 [0.092]
34.85 [1.372]
23.03 MS7H1500C [0.907]
10.02 [0.394] REF
WHEN OPEN
10.33 [0.407]
15.93 [0.627]
7.35 [0.289]
21.05 [0.829]
32.35 [1.274]
34.83 [1.371]
MSXL2000C
10.02 [0.394] REF
WHEN OPEN
23.05 [0.907]
15.95 [0.628]
10.35 [0.407]
32.54 [1.281]
18.84 [0.742]
31.33
[1.234]
33.83 [1.332]
63.0
MS7H1500C
10.0
32.3 33.4
42.0
MS3H1000C
33.4
10.0
32.3
Dimensions
1/4” Q.C TERMINALS
MS3H1000C
MS7H1500C
MSXL2000C
VISUAL INDICATOR
REVIEW HEADERS AND SECTION NUMBERS
122
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
L50QS SERIES HIGH-SPEED ROUND-BODY FUSES
Specifications
Voltage Rating AC: 500V
DC: 500V
Amperage Rating 35 - 800
Interrupting Rating AC: 200 kA
DC: 50 kA
Material Body: Melamine
Caps: Copper Alloy (Silver Plated)
Approvals UL Recognized (E71611)
c-UR-us (E71611)
Environmental RoHS Compliant, REACH
Country of Origin Mexico
Operating Temperature -55C to +125C
Storage Temperature Up to 35C with Relative Humidity <65%
Description
The L50QS Series is a next generation High-Speed Fuse for the
protection of power semiconductor devices and is designed in
the Traditional North American Bolted Style package.
L50QS Series High-Speed Fuses are extremely current
limiting and are used to protect power converters, drives
and control circuit applications. Designed with lower I2t
performance characteristics, these fuses provide balanced
performance to extend longevity while lowering potentially
damaging heat energy to the devices being protected.
In addition L50QS Series fuses have been designed with a
universal mounting option to meet customer requirements
for installation into a variety of application configurations
Littelfuse POWR-SPEED™ products offer optimized
circuit protection at the extremely fast speed required to
protect modern day, sensitive, high-power semiconductor
devices. Such products are commonly found in various
industries including pulp and paper industries, cranes and
heavy-lifting equipment, processing industries, wastewater
treatment plants and large factories and MRO facilities.
Features/Benefits
Compliance with US and Canadian Requirements
Traditional North American Bolted Style dimensions
Class aR performance
Direct bus-bar mount or stud mount design
RoHS and REACH Compliant
Applications
Power Converters (Inverters, Rectifiers)
Power Supplies
UPS Variable Speed Drives Control Circuits
Soft Starters
Recommended Fuse Blocks
LSCR001 (35-200 A).................................................. 127
LSCR002 (225-800 A)................................................ 127
Web Resources
Download technical documents: Littelfuse.com/L50QS
500 Vac/dc • 35-800 A • Traditional Round-Body Bolted Style
Part Numbering System
L50 QS 500 X
Body Type
Ampere Code
Series
Package Quantity
X = 1 (450 - 800A)
V = 5 (125 - 400A)
T = 10 (35 - 100A)
SERIES BODY
TYPE
AMPERE
CODE
PACKAGE
QUANTITY
CATALOG
NUMBER
ORDERING
NUMBER
L50 QS 500 1 L50QS500 L50QS500.X
123
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
L50QS SERIES HIGH-SPEED ROUND-BODY FUSES
Electrical Specifications
CATALOG
NUMBER
AMPERAGE
RATING
VOLTAGE
RATING
INTERRUPT
RATING MELTING
(PRE-ARC)
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
WATTS LOSS
AT 80% RATED
CURRENT
WATTS LOSS
AT 100% RATED
CURRENT
AC DC AC DC 200 kA @ 500 Vac 50 kA @ 500 Vdc (W) (W)
L50QS035 35 500 500 200kA 50kA 111 430 290 3 5
L50QS040 40 500 500 200kA 50kA 137 530 363 3 9
L50QS050 50 500 500 200kA 50kA 211 770 516 5 8
L50QS060 60 500 500 200kA 50kA 269 1,500 881 5 9
L50QS070 70 500 500 200kA 50kA 393 1,775 1,185 6 11
L50QS080 80 500 500 200kA 50kA 616 3,550 1,720 6 11
L50QS090 90 500 500 200kA 50kA 720 4,075 1,990 8 14
L50QS100 100 500 500 200kA 50kA 905 4,577 2,313 9 17
L50QS125 125 500 500 200kA 50kA 1,503 7,655 4,815 10 17
L50QS150 150 500 500 200kA 50kA 2,382 11,100 7,190 12 21
L50QS175 175 500 500 200kA 50kA 3,148 16,500 9,900 14 25
L50QS200 200 500 500 200kA 50kA 4,102 18,233 11,567 17 32
L50QS225 225 500 500 200kA 50kA 5,379 25,300 16,700 19 35
L50QS250 250 500 500 200kA 50kA 7,094 31,350 22,500 20 37
L50QS300 300 500 500 200kA 50kA 11,240 53,800 36,150 25 46
L50QS350 350 500 500 200kA 50kA 14,246 68,850 44,800 30 61
L50QS400 400 500 500 200kA 50kA 21,155 100,300 67,300 33 65
L50QS450 450 500 500 200kA 50kA 26,425 121,000 84,650 35 63
L50QS500 500 500 500 200kA 50kA 31,747 141,000 103,500 39 72
L50QS600 600 500 500 200kA 50kA 43,922 193,500 128,000 49 92
L50QS700 700 500 500 200kA 50kA 75,597 314,000 230,000 51 92
L50QS800 800 500 500 200kA 50kA 92,717 393,500 280,000 63 117
124
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
L50QS SERIES HIGH-SPEED ROUND-BODY FUSES
Dimensions
Millimeters [inches]
Document Number: OL-L50QS000
3.18
[0.125]
25.40
[1.000]
17.02
[0.670]
92.08
[3.625]
53.98
[2.125]
76.19
[2.999]
65.07
[2.562]
8.73
[0.344]
35-100A
4.75
[0.187]
30.94
[1.218]
22.73
[0.895]
92.08
[3.625]
73.86
[2.908]
70.32
[2.768]
53.98
[2.125]
8.74
[0.344]
125-200A
6.35
[0.250]
38.10
[1.500]
25.27
[0.995]
110.31
[4.343]
87.37
[3.440]
69.83
[2.749]
53.16
[2.093]
10.41
[0.410]
225-400A
6.35
[0.250]
50.80
[2.000]
113.49
[4.468]
92.82
[3.654]
70.86
[2.790]
56.34
[2.218]
10.41
[0.410]
38.10
[1.500]
450-600A
9.53
[0.375]
63.50
[2.500]
50.80
[2.000]
157.15
[6.187]
126.93
[4.997]
87.30
[3.437]
56.34
[2.218]
13.46
[0.530]
700-800A
∅
∅ ∅
∅ ∅
Stud Size: M8 (5/16”)
Recommended Torque: 15 Nm (132.76 in-lb)
Stud Size: M8 (5/16”)
Recommended Torque: 15 Nm (132.76 in-lb)
Stud Size: M8 (5/16”)
Recommended Torque: 15 Nm (132.76 in-lb)
Stud Size: M8 (5/16”)
Recommended Torque: 15 Nm (132.76 in-lb)
Stud Size: M12 (1/2”)
Recommended Torque: 54 Nm (477.94 in-lb)
3.18
[0.125]
25.40
[1.000]
17.02
[0.670]
92.08
[3.625]
53.98
[2.125]
76.19
[2.999]
65.07
[2.562]
8.73
[0.344]
35-100A
4.75
[0.187]
30.94
[1.218]
22.73
[0.895]
92.08
[3.625]
73.86
[2.908]
70.32
[2.768]
53.98
[2.125]
8.74
[0.344]
125-200A
6.35
[0.250]
38.10
[1.500]
25.27
[0.995]
110.31
[4.343]
87.37
[3.440]
69.83
[2.749]
53.16
[2.093]
10.41
[0.410]
225-400A
6.35
[0.250]
50.80
[2.000]
113.49
[4.468]
92.82
[3.654]
70.86
[2.790]
56.34
[2.218]
10.41
[0.410]
38.10
[1.500]
450-600A
9.53
[0.375]
63.50
[2.500]
50.80
[2.000]
157.15
[6.187]
126.93
[4.997]
87.30
[3.437]
56.34
[2.218]
13.46
[0.530]
700-800A
∅
∅ ∅
∅ ∅
125
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
L70QS SERIES HIGH-SPEED ROUND-BODY FUSES
Specifications
Voltage Rating Ac: 700 V
Dc: 700 V
Amperage Rating 35–800 A
Interrupting Rating Ac: 200 kA
Dc: 50 kA
Time Constant 10 ms
Material Body: Melamine
Caps: Copper Alloy (Silver Plated)
Approvals UL Recognized (E71611)
c-UR-us (E71611)
Environmental RoHS compliant, REACH
Country of Origin Mexico
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to 35 °C with relative humidity <65 % Description
The L70QS series is a next generation high-speed fuse
for the protection of power semiconductor devices and
is designed in the traditional North American bolted style
package.
L70QS series high-speed fuses are extremely current
limiting and are used to protect power converters, drives
and control circuit applications. Designed with lower I2t
performance characteristics, these fuses provide balanced
performance to extend longevity while lowering potentially
damaging heat energy to the devices being protected.
In addition L70QS series fuses have been designed with a
universal mounting option to meet customer requirements
for installation into a variety of application configurations
Littelfuse POWR-SPEED products offer optimized
circuit protection at the extremely fast speed required to
protect modern day, sensitive, high-power semiconductor
devices. Such products are commonly found in various
industries including pulp and paper industries, cranes and
heavy-lifting equipment, processing industries, wastewater
treatment plants and large factories and MRO facilities.
Features
Compliance with US and Canadian requirements
Traditional North American bolted style dimensions
Class aR performance
Direct bus-bar mount or stud mount design
Halogen free, RoHS and REACH compliant
Applications
Power converters (inverters, rectifiers)
Power supplies
UPS
Variable speed drives
Control circuits
Soft starters
Recommended Fuse Blocks
LSCR001 (35–100 A)
LSCR002 (125–800 A)
700 V ac/dc • Very Fast Acting • 35–800 A
Part Numbering System
L70 QS 700 X
Body Type
Ampere Code
Series
Package Quantity
X = 1 (225–800 A)
V = 5 (35–200 A)
SERIES BODY
TYPE
AMPERE
CODE
PACKAGE
QUANTITY
CATALOG
NUMBER
ORDERING
NUMBER
L70 QS 700 1 L70QS700 L70QS700.X
Web Resources
Download technical documents: Littelfuse.com/L70QS
Note: high-speed fuses are designed for fixed installations. They are not
intended for use in moving vehicle applications.
HF
126
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
L70QS SERIES HIGH-SPEED ROUND-BODY FUSES
SERIES AMPERAGE
RATING
AMPERE
CODE
CATALOG
NUMBER
ORDERING
NUMBER
PACK
QUANTITY UPC
L70QS 35 035 L70QS035 L70QS035.V 5 Pcs/ Box 07945886015
L70QS 40 040 L70QS040 L70QS040.V 5 Pcs/ Box 07945886016
L70QS 50 050 L70QS050 L70QS050.V 5 Pcs/ Box 07945886017
L70QS 60 060 L70QS060 L70QS060.V 5 Pcs/ Box 07945886018
L70QS 70 070 L70QS070 L70QS070.V 5 Pcs/ Box 07945886019
L70QS 80 080 L70QS080 L70QS080.V 5 Pcs/ Box 07945886020
L70QS 90 090 L70QS090 L70QS090.V 5 Pcs/ Box 07945886021
L70QS 100 100 L70QS100 L70QS100.V 5 Pcs/ Box 07945886022
L70QS 125 125 L70QS125 L70QS125.V 5 Pcs/ Box 07945886023
L70QS 150 150 L70QS150 L70QS150.V 5 Pcs/ Box 07945886024
L70QS 175 175 L70QS175 L70QS175.V 5 Pcs/ Box 07945886025
L70QS 200 200 L70QS200 L70QS200.V 5 Pcs/ Box 07945886026
L70QS 225 225 L70QS225 L70QS225.X 1 Pc/ Box 07945886027
L70QS 250 250 L70QS250 L70QS250.X 1 Pc/ Box 07945886028
L70QS 300 300 L70QS300 L70QS300.X 1 Pc/ Box 07945886029
L70QS 350 350 L70QS350 L70QS350.X 1 Pc/ Box 07945886030
L70QS 400 400 L70QS400 L70QS400.X 1 Pc/ Box 07945886031
L70QS 450 450 L70QS450 L70QS450.X 1 Pc/ Box 07945886032
L70QS 500 500 L70QS500 L70QS500.X 1 Pc/ Box 07945886033
L70QS 600 600 L70QS600 L70QS600.X 1 Pc/ Box 07945886034
L70QS 700 700 L70QS700 L70QS700.X 1 Pc/ Box 07945886035
L70QS 800 800 L70QS800 L70QS800.X 1 Pc/ Box 07945886036
Ordering Information
Electrical Specifications
CATALOG
NUMBER
AMPERAGE
RATING
VOLTAGE
RATING
INTERRUPT
RATING MELTING
(PRE-ARC)
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
WATTS LOSS
AT 80 % RATED
CURRENT
WATTS LOSS
AT 100 % RATED
CURRENT
AC DC AC DC 200 KA @ 700 V AC 50 KA @ 700 V DC (W) (W)
L70QS035 35 700 700 200 kA 50 kA 129 332 308 5 8
L70QS040 40 700 700 200 kA 50 kA 153 599 416 6 9
L70QS050 50 700 700 200 kA 50 kA 196 711 588 6 12
L70QS060 60 700 700 200 kA 50 kA 269 1,233 678 9 15
L70QS070 70 700 700 200 kA 50 kA 359 1,575 1,075 10 20
L70QS080 80 700 700 200 kA 50 kA 452 2,755 1,415 12 22
L70QS090 90 700 700 200 kA 50 kA 625 3,365 1,920 13 25
L70QS100 100 700 700 200 kA 50 kA 966 3,747 2,347 15 30
L70QS125 125 700 700 200 kA 50 kA 2,208 8,795 5,570 13 24
L70QS150 150 700 700 200 kA 50 kA 3,026 13,650 8,195 17 32
L70QS175 175 700 700 200 kA 50 kA 4,219 19,550 11,650 20 38
L70QS200 200 700 700 200 kA 50 kA 5,529 22,067 16,100 22 42
L70QS225 225 700 700 200 kA 50 kA 9,226 34,900 25,400 22 40
L70QS250 250 700 700 200 kA 50 kA 10,999 43,750 31,650 27 46
L70QS300 300 700 700 200 kA 50 kA 16,296 64,400 45,500 31 57
L70QS350 350 700 700 200 kA 50 kA 24,778 91,500 65,250 35 67
L70QS400 400 700 700 200 kA 50 kA 34,225 110,667 94,666 41 79
L70QS450 450 700 700 200 kA 50 kA 38,946 145,500 113,500 45 81
L70QS500 500 700 700 200 kA 50 kA 42,747 173,000 125,500 56 112
L70QS600 600 700 700 200 kA 50 kA 67,363 220,333 179,667 67 138
L70QS700 700 700 700 200 kA 50 kA 99,387 368,000 298,000 72 138
L70QS800 800 700 700 200 kA 50 kA 156,137 466,333 415,333 76 142
127
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
L70QS SERIES HIGH-SPEED ROUND-BODY FUSES
Dimensions
Millimeters [inches]
Stud Size: M8 (5/16”)
Recommended Torque: 15 Nm (132.76 in-lb)
Stud Size: M8 (5/16”)
Recommended Torque: 15 Nm (132.76 in-lb)
Stud Size: M8 (5/16”)
Recommended Torque: 15 Nm (132.76 in-lb)
Stud Size: M12 (1/2”)
Recommended Torque: 54 Nm (477.94 in-lb)
Stud Size: M12 (1/2”)
Recommended Torque: 54 Nm (477.94 in-lb)
Document Number: OL-L70QS000
3RD ANGLE
PROJECTION
E OL-L70QS00Littelfuse
® REVISION DRWG NO.
TITLE
DRW DATE
FINISH GMYORK 9/3/2015
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMEBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATOF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMEAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
L70QS SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/23/16 515693GCP - RELEASE MRY
B 9/6/16 516327ECP/D - CHG DATA SHEET REVISION MRY
C 6/6/17 517424ECP/D - REMOVE DATA SHEET REVISION MRYD 9/5/17 517727ECP/D - ADD DIMENSION TOLERANCES MRY
E 3/25/19 520556ECP/D - ADD BLADE TOLERANCES MRY
111.13± 1.59
[ ] 4.375± 0.063
95.24± 1.59
[ ] 3.749± 0.063
84.12± 1.59
[ ] 3.312± 0.063
73.03
[2.875]
17.02± 0.89
[ ] 0.670± 0.035
8.73
[0.344]
Ø25.40± 0.381
[ ] 1.000± 0.015
3.18± 0.15
[ ] 0.125± 0.006
72.24
[2.844]
73.03
[2.875]
Ø 0 30.94± .381
[ ] 1.218± 0.015
38.10± 0.89
[ ] 1.500± 0.035
10.41
[0.410]
129.39± 1.59
[ ] 5.094± 0.063
108.72± 1.59
[ ] 4.280± 0.063
86.76± 1.59
[ ] 3.416± 0.063
6.35± 0.15
[ ] 0.250± 0.006
Ø 0 50.80± .381
[ ] 2.000± 0.015 Ø 0 50.80± .381
[ ] 2.000± 0.015
6.35± 0.15
[ ] 0.250± 0.006
Ø 0 63.50± .381
[ ] 2.500± 0.015
9.53± 0.15
[ ] 0.375± 0.006
38.10± 0.89
[ ] 1.500± 0.035
13.46
[0.530]
180.09± 1.59
[ ] 7.090± 0.063
156.47± 1.59
[ ] 6.160± 0.063
89.67± 1.59
[ ] 3.530± 0.063 72.24
[2.844]
50.80± 0.89
[ ] 2.000± 0.035
173.05± 1.59
[ ] 6.813± 0.063
142.83± 1.59
[ ] 5.623± 0.063
103.20± 1.59
[ ] 4.063± 0.063
35–100A
125–200A 225–400A
450–600A 700–800A
129.16± 1.59
[ ] 5.085± 0.063
106.30± 1.59
[ ] 4.185± 0.063
88.77± 1.59
[ ] 3.495± 0.063
10.41
[0.410]
22.73± 0.89
[ ] 0.895± 0.035
4.75± 0.15
[ ] 0.187± 0.006
14.29
[0.563] 46.86
[1.845]
21.39
[0.842] 19.18
[0.755]
3RD ANPROJECTITLE
DRWMYORK MATL SPUNLEBRACKETCPKCP
REV DA 3/2B 9/C 6/D 9/E 3/2111.13± 1.59
[ ] 4.375± 0.063
95.24± 1.59
[ ] 3.749± 0.063
84.12± 1.59
[ ] 3.312± 0.063
73.03
[2.875]
17.02± 0.89
[ ] 0.670± 0.035
8.73
[0.344]
Ø25.40± 0.381
[ ] 1.000± 0.015
3.18± 0.15
[ ] 0.125± 0.006
72.24
[2.844]
73.03
[2.875]
Ø 0 30.94± .381
[ ] 1.218± 0.015
38.10± 0.89
[ ] 1.500± 0.035
10.41
[0.410]
129.39± 1.59
[ ] 5.094± 0.063
108.72± 1.59
[ ] 4.280± 0.063
86.76± 1.59
[ ] 3.416± 0.063
6.35± 0.15
[ ] 0.250± 0.006
Ø 0 50.80± .381
[ ] 2.000± 0.015 Ø 0 50.80± .381
[ ] 2.000± 0.015
6.35± 0.15
[ ] 0.250± 0.006
38.10± 0.89
[ ] 1.500± 0.035
13.46
[0.530]
180.09± 1.59
[ ] 7.090± 0.063
156.47± 1.59
[ ] 6.160± 0.063
89.67± 1.59
[ ] 3.530± 0.063 72.24
[2.844]
173.05± 1[6.813± 01[5103.[4.035–100A
125–200A 225–400A
450–600A 129.16± 1.59
[ ] 5.085± 0.063
106.30± 1.59
[ ] 4.185± 0.063
88.77± 1.59
[ ] 3.495± 0.063
10.41
[0.410]
22.73± 0.89
[ ] 0.895± 0.035
4.75± 0.15
[ ] 0.187± 0.006
14.29
[0.563] 46.86
[1.845]
21.39
[0.842] 19.18
[0.755]
111.13± 1.59
[ ] 4.375± 0.063
95.24± 1.59
[ ] 3.749± 0.063
84.12± 1.59
[ ] 3.312± 0.063
73.03
[2.875]
17.02± 0.89
[ ] 0.670± 0.035
8.73
[0.344]
Ø25.40± 0.381
[ ] 1.000± 0.015
3.18± 0.15
[ ] 0.125± 0.006
72.24
[2.844]
73.03
[2.875]
Ø 0 30.94± .381
[ ] 1.218± 0.015
38.10± 0.89
[ ] 1.500± 0.035
10.41
[0.410]
129.39± 1.59
[ ] 5.094± 0.063
108.72± 1.59
[ ] 4.280± 0.063
86.76± 1.59
[ ] 3.416± 0.063
6.35± 0.15
[ ] 0.250± 0.006
Ø 0 50.80± .381
[ ] 2.000± 0.015 Ø 0 50.80± .381
[ ] 2.000± 0.015
6.35± 0.15
[ ] 0.250± 0.006
38.10± 0.89
[ ] 1.500± 0.035
180.09± 1.59
[ ] 7.090± 0.063
156.47± 1.59
[ ] 6.160± 0.063
89.67± 1.59
[ ] 3.530± 0.063 35–100A
125–200A 225–400A
129.16± 1.59
[ ] 5.085± 0.063
106.30± 1.59
[ ] 4.185± 0.063
88.77± 1.59
[ ] 3.495± 0.063
10.41
[0.410]
22.73± 0.89
[ ] 0.895± 0.035
4.75± 0.15
[ ] 0.187± 0.006
14.29
[0.563] 21.39
[0.842] 19.18
[0.755]
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 9/3/2015
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TOBEINTERPRETEDINACCORDANCEWITHANSIY145M1994DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
NTS
REVISION
REV DATE DESCRIPTION
A 3/23/16 515693GCP - RELEASE MRY
B 9/6/16 516327ECP/D - CHG DATA SHEET REVISION MRY
C 6/6/17 517424ECP/D - REMOVE DATA SHEET REVISION MRY
D 9/5/17 517727ECP/D - ADD DIMENSION TOLERANCES MRY
E 3/25/19 520556ECP/D - ADD BLADE TOLERANCES MRY
72.24
[2.844]
73.03
[2.875]
Ø 0 30.94± .381
[ ] 1.218± 0.015
38.10± 0.89
[ ] 1.500± 0.035
10.41
[0.410]
129.39± 1.59
[ ] 5.094± 0.063
108.72± 1.59
[ ] 4.280± 0.063
86.76± 1.59
[ ] 3.416± 0.063
6.35± 0.15
[ ] 0.250± 0.006
Ø 0 50.80± .381
[ ] 2.000± 0.015 Ø 0 50.80± .381
[ ] 2.000± 0.015
6.35± 0.15
[ ] 0.250± 0.006
Ø 0 63.50± .381
[ ] 2.500± 0.015
9.53± 0.15
[ ] 0.375± 0.006
38.10± 0.89
[ ] 1.500± 0.035
13.46
[0.530]
180.09± 1.59
[ ] 7.090± 0.063
156.47± 1.59
[ ] 6.160± 0.063
89.67± 1.59
[ ] 3.530± 0.063 72.24
[2.844]
50.80± 0.89
[ ] 2.000± 0.035
13.46
[0.530]
173.05± 1.59
[ ] 6.813± 0.063
142.83± 1.59
[ ] 5.623± 0.063
103.20± 1.59
[ ] 4.063± 0.063
72.24
[2.844]
125–200A 225–400A
450–600A 700–800A
129.16± 1.59
] 5.085± 0.063
106.30± 1.59
[ ] 4.185± 0.063
88.77± 1.59
[ ] 3.495± 0.063
10.41
[0.410]
22.73± 0.89
[ ] 0.895± 0.035
4.75± 0.15
[ ] 0.187± 0.006
9
63] 33.27
[1.310]
46.86
[1.845]
21.39
[0.842] 19.18
[0.755]
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 9/3/2015
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TOBEINTERPRETEDINACCORDANCEWITHANSIY145M1994DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
NTS
REVISION
REV DATE DESCRIPTION
A 3/23/16 515693GCP - RELEASE MRY
B 9/6/16 516327ECP/D - CHG DATA SHEET REVISION MRY
C 6/6/17 517424ECP/D - REMOVE DATA SHEET REVISION MRY
D 9/5/17 517727ECP/D - ADD DIMENSION TOLERANCES MRY
E 3/25/19 520556ECP/D - ADD BLADE TOLERANCES MRY
72.24
[2.844]
± 0.89
] 0± 0.035
10.41
[0.410]
] 3
15
] 0.006
381
] 15 Ø 0 50.80± .381
[ ] 2.000± 0.015
6.35± 0.15
[ ] 0.250± 0.006
Ø 0 63.50± .381
[ ] 2.500± 0.015
9.53± 0.15
[ ] 0.375± 0.006
38.10± 0.89
[ ] 1.500± 0.035
13.46
[0.530]
180.09± 1.59
[ ] 7.090± 0.063
156.47± 1.59
[ ] 6.160± 0.063
89.67± 1.59
[ ] 3.530± 0.063 72.24
[2.844]
50.80± 0.89
[ ] 2.000± 0.035
13.46
[0.530]
173.05± 1.59
[ ] 6.813± 0.063
142.83± 1.59
[ ] 5.623± 0.063
103.20± 1.59
[ ] 4.063± 0.063
72.24
[2.844]
225–400A
450–600A 700–800A
33.27
[1.310]
46.86
[1.845]
21.39
[0.842]
128
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
Specifications
Voltage Rating 500 Vac
450 Vdc
Amperage Rating 10, 12, 15, 20, 25, 30, 35, 40, 50, 60,
70, 80, 90, 100, 125, 150, 175, 200, 225,
250, 275, 300, 350, 400, 450, 500, 550,
600, 700, 800
Interrupting Rating AC: 200 kAIC
DC: 20 kAIC
Material Body: Melamine
Terminals: Copper (silver plated)
Mounting Type Cylindrical (10 - 30 A)
Bolted Tags (35 - 800 A)
Operating Temperature -55˚ C to +125˚ C
Storage Temperature Up to 35˚ C with relative humidity less
than 65%
Approvals UL Recognized (File: E71611)
CSA Recognized (File: LR29862)
Environmental RoHS Compliant
Country of Origin Mexico
Description
Littelfuse L50S Series High-Speed Fuses are designed
to protect today’s equipment and systems, and are
manufactured with Littelfuse-developed technology that
sets standards for accuracy, consistent quality, reliability,
and predictable performance.
Littelfuse engineers have redefined High-Speed Fuse
Technology by using advanced metallurgical, polymer,
and materials research, mathematical modeling, and
computerized statistical analysis.
Features/Benefits
Extremely Current Limiting
Low Watt Losses
Controlled Transient Over-voltages
UL Recognized
Applications
AC & DC Drives
DC Common Bus Protection
Power Converters
UPS
Soft-Starters
Recommended Fuse Holder
LSCR001 (35-200 A).................................................. 127
LSCR002 (225-800 A)................................................ 127
Web Resources
Download technical documents: Littelfuse.com/L50S
L50S SERIES TRADITIONAL HIGH-SPEED FUSES
500 Vac • 450 Vdc • 10-800 A • Traditional Round-Body Style
SERIES AMP CATALOG NUMBER ORDERING NUMBER
L50S 10 L50S010 L50S010.T
L50S 500 L50S500 L50S500.X
Part Numbering System
L50S xxx .T
Package Quantity
Series
Amp Code
Refer to Amp Code
Column in Ordering
Information Table
X = 1
T = 10
129
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
L50S SERIES TRADITIONAL HIGH-SPEED FUSES
Electrical Specifications
CATALOG
NUMBER
AMPERAGE
RATINGVOLTAGE
RATING
INTERRUPT
RATING MELTING
(PRE-ARC)
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
WATTS LOSS
AT 100% RATED
CURRENT
WATTS LOSS
AT 80% RATED
CURRENT
AC DC AC DC 100 kA @ 500 Vac 200 kA @ 500 Vac 20 kA @ 450 Vdc (W) (W)
L50S010 10 500 450 200kA 20kA 21 112 128 85 2 1
L50S012 12 500 450 200kA 20kA 26 149 170 97 2 1
L50S015 15 500 450 200kA 20kA 34 222 250 116 2 2
L50S020 20 500 450 200kA 20kA 48 363 400 143 5 3
L50S025 25 500 450 200kA 20kA 62 528 600 170 7 4
L50S030 30 500 450 200kA 20kA 77 707 820 193 10 5
L50S035 35 500 450 200kA 20kA 130 1,120 1,210 400 6 3
L50S040 40 500 450 200kA 20kA 161 1,420 1,550 525 7 4
L50S050 50 500 450 200kA 20kA 222 2,150 2,360 867 11 6
L50S060 60 500 450 200kA 20kA 259 3,016 3,300 1,287 13 7
L50S070 70 500 450 200kA 20kA 420 4,100 4,930 1,670 17 10
L50S080 80 500 450 200kA 20kA 554 5,300 6,950 2,240 19 10
L50S090 90 500 450 200kA 20kA 677 6,750 9,500 2,900 24 13
L50S100 100 500 450 200kA 20kA 807 8,273 12,600 3,626 30 16
L50S125 125 500 450 200kA 20kA 1,290 13,100 19,000 5,150 22 12
L50S150 150 500 450 200kA 20kA 2,504 19,100 26,500 6,700 27 15
L50S175 175 500 450 200kA 20kA 3,224 26,300 35,000 8,700 33 17
L50S200 200 500 450 200kA 20kA 3,938 34,233 44,583 11,297 35 19
L50S225 225 500 450 200kA 20kA 6,034 43,500 56,000 14,750 31 17
L50S250 250 500 450 200kA 20kA 7,510 54,000 69,000 19,600 36 19
L50S275 275 500 450 200kA 20kA 9,000 65,500 82,000 25,500 41 22
L50S300 300 500 450 200kA 20kA 10,808 78,500 97,500 32,200 42 23
L50S350 350 500 450 200kA 20kA 16,500 107,000 132,000 50,100 50 28
L50S400 400 500 450 200kA 20kA 22,941 142,333 169,667 72,270 58 30
L50S450 450 500 450 200kA 20kA 29,300 178,500 208,000 95,000 58 32
L50S500 500 500 450 200kA 20kA 37,000 220,000 250,000 118,000 64 35
L50S550 550 500 450 200kA 20kA 45,851 311,667 347,333 176,766 75 41
L50S600 600 500 450 200kA 20kA 45,851 311,667 347,333 176,766 98 50
L50S700 700 500 450 200kA 20kA 82,396 460,000 622,333 289,000 96 51
L50S800 800 500 450 200kA 20kA 115,656 647,667 687,500 465,590 118 60
Dimensions
AMPERE
RATING FIGURE NO. DIMENSIONS INCHES (MM)
A B C D E F G H
10 – 30 1 2 (50.8) — 1⁄2 (12.7) 9⁄16 (14.3) — — — —
31 – 60 2 15⁄8 (41.3) 21⁄4 (57.2) 21⁄2 (63.5) 33⁄16 (81.0) 13⁄16 (20.6) 23⁄32 (18.3) 11⁄32 (8.7) 1⁄8 (3.2)
61 – 100 3 21⁄8 (54.0) 211⁄16 (68.3) 3 (76.2) 35⁄8 (92.1) 1 (25.4) .670 (17.0) 11⁄32 (8.7) 1⁄8 (3.2)
101 – 200 3 21⁄8 (54.0) 213⁄16 (71.4) 215⁄16 (74.6) 35⁄8 (92.1) 17⁄32 (31.0) .895 (22.7) 5⁄16 (7.9) 3⁄16 (4.75)
201 – 400 3 23⁄32 (53.2) 225⁄32 (70.6) 313⁄32 (86.5) 411⁄32 (110.3) 11⁄2 (38.1) 1 (25.4) 13⁄32 (10.3) 1⁄4 (6.4)
401 – 600 3 27⁄32 (56.4) 229⁄32 (73.8) 317⁄32 (89.7) 415⁄32 (113.5) 2 (50.8) 11⁄2 (38.1) 13⁄32 (10.3) 1⁄4 (6.4)
601 – 800 3 27⁄32 (56.4) 49⁄32 (108.7) 45⁄8 (117.5) 615⁄32 (164.3) 21⁄2 (63.5) 2 (50.8) 17⁄32 (13.5) 3
⁄8 (9.5)
A
B
C
D
F
G
E
H
Fig. 3
A
C
D
Fig. 1 Figure 1 Figure 2 Figure 3
E
H
F
G
A
B
C
D
Fig, 2
130
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
Specifications
Voltage Rating 700 Vac
650 Vdc
Amperage Rating 10, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 90,
100, 125, 150, 175, 200, 225, 250, 300, 350,
400, 450, 500, 600, 700, 800
Interrupting Rating AC: 200 kAIC
DC: 20 kAIC
Material Body: Melamine
Terminals: Copper (silver plated)
Mounting Type Cylindrical (10 - 30 A)
Bolted Tags (35 - 800 A)
Operating Temperature -55˚ C to +125˚ C
Storage Temperature Up to 35˚ C with relative humidity less than 65%
Approvals UL Recognized (File: E71611)
CSA Recognized (File: LR29862)
Environmental RoHS Compliant
Country of Origin Mexico
Description
Littelfuse L70S Series High-Speed Fuses are designed
to protect today’s equipment and systems, and are
manufactured with Littelfuse-developed technology that
sets standards for accuracy, consistent quality, reliability,
and predictable performance.
Littelfuse engineers have redefined High-Speed Fuse
technology by using advanced metallurgical, polymer,
and materials research, mathematical modeling, and
computerized statistical analysis.
Features/Benefits
Extremely Current Limiting Low Watt Losses Controlled Transient Over-voltages
UL Recognized
Applications
AC & DC Drives DC Common Bus Protection
Power Converters UPS
Soft-Starters
Recommended Fuse Block
LSCR001 (35-200 A).................................................. 127
LSCR002 (225-800 A)................................................ 127
Web Resources
Download technical documents: Littelfuse.com/L70S
L70S SERIES TRADITIONAL HIGH-SPEED FUSES
700 Vac • 650 Vdc • 10-800 A • Traditional Round-Body Style
SERIES AMP CATALOG NUMBER ORDERING NUMBER
L70S 10 L70S010 L70S010.T
L70S 500 L70S500 L70S500.X
Part Numbering System
L70S xxx .T
Package Quantity
Series
Amp Code
Refer to Amp Code
Column in Ordering
Information Table
X = 1
T = 10
131
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
Electrical Specifications
CATALOG
NUMBER
AMPERAGE
RATING
VOLTAGE
RATING
INTERRUPT
RATING MELTING
(PRE-ARC)
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
TOTAL
CLEARING
I
2
T (A2
s)
WATTS LOSS
AT 100% RATED
CURRENT
WATTS LOSS
AT 80% RATED
CURRENT
AC DC AC DC 100 kA @ 700 Vac 200 kA @ 700 Vac 20 kA @ 650 Vdc (W) (W)
L70S010 10 700 650 200kA 20kA 21 160 173 346 2 1
L70S015 15 700 650 200kA 20kA 34 330 355 270 2 2
L70S020 20 700 650 200kA 20kA 48 550 599 300 5 2
L70S025 25 700 650 200kA 20kA 62 810 900 340 7 4
L70S030 30 700 650 200kA 20kA 77 1,130 1,220 417 10 5
L70S035 35 700 650 200kA 20kA 110 1,470 1,500 500 12 6
L70S040 40 700 650 200kA 20kA 150 1,830 2,000 660 13 7
L70S050 50 700 650 200kA 20kA 250 2,670 3,200 1,070 16 9
L70S060 60 700 650 200kA 20kA 380 3,646 4,674 1,572 18 9
L70S070 70 700 650 200kA 20kA 545 4,800 6,000 1,970 16 9
L70S080 80 700 650 200kA 20kA 745 6,180 7,550 2,380 21 11
L70S090 90 700 650 200kA 20kA 990 7,650 9,250 2,830 25 13
L70S100 100 700 650 200kA 20kA 1,266 9,407 11,117 3,266 29 14
L70S125 125 700 650 200kA 20kA 2,150 14,700 17,550 4,900 33 17
L70S150 150 700 650 200kA 20kA 3,280 21,250 25,700 6,800 51 24
L70S175 175 700 650 200kA 20kA 4,700 28,750 34,800 9,000 63 28
L70S200 200 700 650 200kA 20kA 6,411 37,300 45,583 11,447 75 33
L70S225 225 700 650 200kA 20kA 8,000 46,500 57,000 16,000 43 24
L70S250 250 700 650 200kA 20kA 9,900 58,000 69,500 22,000 49 27
L70S300 300 700 650 200kA 20kA 14,000 83,000 97,700 37,500 60 33
L70S350 350 700 650 200kA 20kA 19,000 113,000 131,000 59,000 71 36
L70S400 400 700 650 200kA 20kA 24,373 147,290 169,000 87,875 107 49
L70S450 450 700 650 200kA 20kA 33,000 191,000 219,000 119,000 85 47
L70S500 500 700 650 200kA 20kA 44,200 240,000 275,000 155,000 92 49
L70S600 600 700 650 200kA 20kA 72,000 370,250 405,000 246,182 106 56
L70S700 700 700 650 200kA 20kA 110,000 526,000 573,000 255,000 128 67
L70S800 800 700 650 200kA 20kA 157,082 735,330 762,333 262,949 156 78
L70S SERIES TRADITIONAL HIGH-SPEED FUSES
Dimensions
AMPERE
RATING
FIGURE
NO.
DIMENSIONS INCHES (MM)
A B C D E F G H J
10 – 30 1 2 (50.8) — 1⁄2 (12.7) 9⁄16 (14.3) — — — — —
31 – 60 2 27⁄8 (73.0) 37⁄16 (87.3) 33⁄4 (95.2) 43⁄8 (111.1) 1 (25.4) 43⁄64 (17.1) 11⁄32 (8.7) 1⁄8 (3.2) —
61 – 100 2 27⁄8 (73.0) 39⁄16 (90.5) 311⁄16 (93.7) 43⁄8 (111.1) 17⁄32 (31.0) 29⁄32 (22.9) 5⁄16 (7.9) 3⁄16 (4.8) —
101 – 200 2 227⁄32 (72.2) 317⁄32 (89.7) 45⁄32 (105.6) 53⁄32 (129.4) 11⁄2 (38.1) 1 (25.4) 13⁄32 (10.3) 1⁄4 (6.4) —
201 – 400 2 227⁄32 (72.2) 317⁄32 (89.7) 45⁄32 (105.6) 53⁄32 (129.4) 2 (50.8) 11⁄2 (38.1) 13⁄32 (10.3) 1⁄4 (6.4) —
401 – 600 2 227⁄32 (72.2) 429⁄32 (124.6) 51⁄4 (133.4) 73⁄32 (180.2) 21⁄2 (63.5) 2 (50.8) 17⁄32 (13.5) 3⁄8 (9.5) —
601 – 800 3 35⁄16 (84.1) 55⁄16 (134.9) 613⁄16(173.0) — 27⁄8 (73.0) 2 (50.8) 5⁄8 (15.9) 3⁄8 (9.5) 5⁄16 (7.9)
F
G A
B
C E
J
H
Fig. 4
A
B
C
D
F
G
E
H
Fig. 3
A
C
D
Fig. 1
Figure 1 Figure 2 Figure 3
132
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
L15S SERIES TRADITIONAL HIGH-SPEED FUSES
150 V ac • Very Fast-Acting • 1–1000 A
Specifications
Voltage Ratings Ac: 150 V
Dc: 100 V – 150 V
Ampere Range 1 – 1000 A
Interrupting Rating Ac: 100 kA
Dc: 20 kA Self Certified
Approvals UL Recognized (File: E71611)
CSA Recognized (File: LR29862)
Time Constant 10 ms
Material Body: Melamine
Cap: Copper Alloy (Silver Plated)
Environmental RoHS
Country of Origin Mexico
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to 35 °C with Relative Humidity <65 %
Part Numbering System
L15S xxx .T
Package Quantity
Series
Amperage
(3 digit minimum)
T = 10 (1 A – 450 A)
V = 5 (500 A – 1000 A)
SERIES AMPERAGE CATALOG
NUMBER
ORDERING
NUMBER
L15S 005 L15S005 L15S005.T
L15S 500 L15S500 L15S500.V
L15S 1000 L15S1000 L15S1000V
Recommended Fuse Holders
1LFS101/1LFS102
LSCR001/LSCR002
Web Resources
For additional information, visit: Littelfuse.com/high-speed
Note: High-Speed fuses are designed for fixed installations. They are not intended for use in moving vehicle applications.
Description
The L15S series is a traditional North American Bolted style
high-speed fuse for protection of power semiconductor
devices that are rated up to 150 V ac and up to 150 V dc
Littelfuse POWR-SPEED ® products offer optimized circuit
protection at the extremely fast speed required to protect
power semiconductor devices such as silicon controlled
rectifiers (SCR’s), diodes, thyristors, triacs, transistors, and
similar solid-state devices. These devices are used in power
equipment including variable speed drives, power rectifiers,
UPS systems, dc power supplies, and in a wide range of
electronic equipment. May be used wherever extremely fastacting, current-limiting fuses with no time delay are required.
Features/Benefits
Compliance with US and Canadian Requirements
Traditional North American Bolted Style dimensions
Class aR performance
Direct bus-bar mount or stud mount design
RoHS Compliant
Applications
Power Converters (Inverters, Rectifiers, UPS)
Power Supplies Industrial Heaters
Variable Speed Drives Battery Chargers
Soft Starters
133
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
Electrical Specifications
CATALOG NUMBER AMPERAGE RATING
VOLTAGE RATING INTERRUPT RATING
AC DC AC DC
L15S001 1 150 150 100 kA 20 kA
L15S002 2 150 150 100 kA 20 kA
L15S003 3 150 150 100 kA 20 kA
L15S004 4 150 150 100 kA 20 kA
L15S005 5 150 150 100 kA 20 kA
L15S006 6 150 150 100 kA 20 kA
L15S007 7 150 150 100 kA 20 kA
L15S008 8 150 150 100 kA 20 kA
L15S009 9 150 150 100 kA 20 kA
L15S010 10 150 150 100 kA 20 kA
L15S012 12 150 150 100 kA 20 kA
L15S015 15 150 150 100 kA 20 kA
L15S020 20 150 150 100 kA 20 kA
L15S025 25 150 150 100 kA 20 kA
L15S035 35 150 150 100 kA 20 kA
L15S040 40 150 150 100 kA 20 kA
L15S045 45 150 150 100 kA 20 kA
L15S050 50 150 150 100 kA 20 kA
L15S060 60 150 150 100 kA 20 kA
L15S070 70 150 100 100 kA 20 kA
L15S080 80 150 100 100 kA 20 kA
L15S090 90 150 100 100 kA 20 kA
L15S100 100 150 100 100 kA 20 kA
L15S125 125 150 100 100 kA 20 kA
L15S150 150 150 100 100 kA 20 kA
L15S200 200 150 100 100 kA 20 kA
L15S250 250 150 100 100 kA 20 kA
L15S300 300 150 100 100 kA 20 kA
L15S350 350 150 100 100 kA 20 kA
L15S400 400 150 100 100 kA 20 kA
L15S450 450 150 100 100 kA 20 kA
L15S500 500 150 100 100 kA 20 kA
L15S600 600 150 100 100 kA 20 kA
L15S800 800 150 100 100 kA 20 kA
L15S1000 1000 150 100 100 kA 20 kA
L15S SERIES TRADITIONAL HIGH-SPEED FUSES
134
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
Ordering Information
SERIES AMPERAGE AMPERE CODE CATALOG
NUMBER
ORDERING
NUMBER PACK QUANTITY UPC
L15S 1 001. L15S001 L15S001.T 10 Pcs/Box 07945800218
L15S 2 002. L15S002 L15S002.T 10 Pcs/Box 07945800219
L15S 3 003. L15S003 L15S003.T 10 Pcs/Box 07945800220
L15S 4 004. L15S004 L15S004.T 10 Pcs/Box 07945800221
L15S 5 005. L15S005 L15S005.T 10 Pcs/Box 07945800222
L15S 6 006. L15S006 L15S006.T 10 Pcs/Box 07945800223
L15S 7 007. L15S007 L15S007.T 10 Pcs/Box 07945800224
L15S 8 008. L15S008 L15S008.T 10 Pcs/Box 07945800225
L15S 9 009. L15S009 L15S009.T 10 Pcs/Box 07945800226
L15S 10 010. L15S010 L15S010.T 10 Pcs/Box 07945800227
L15S 12 012. L15S012 L15S012.T 10 Pcs/Box 07945800228
L15S 15 015. L15S015 L15S015.T 10 Pcs/Box 07945800229
L15S 20 020. L15S020 L15S020.T 10 Pcs/Box 07945800230
L15S 25 025. L15S025 L15S025.T 10 Pcs/Box 07945800231
L15S 30 030. L15S030 L15S030.T 10 Pcs/Box 07945800232
L15S 35 035. L15S035 L15S035.T 10 Pcs/Box 07945800233
L15S 40 040. L15S040 L15S040.T 10 Pcs/Box 07945800234
L15S 45 045. L15S045 L15S045.T 10 Pcs/Box 07945800235
L15S 50 050. L15S050 L15S050.T 10 Pcs/Box 07945800236
L15S 60 060. L15S060 L15S060.T 10 Pcs/Box 07945800237
L15S 70 070. L15S070 L15S070.T 10 Pcs/Box 07945800238
L15S 80 080. L15S080 L15S080.T 10 Pcs/Box 07945800239
L15S 90 090. L15S090 L15S090.T 10 Pcs/Box 07945800240
L15S 100 100. L15S100 L15S100.T 10 Pcs/Box 07945800241
L15S 125 125. L15S125 L15S125.T 10 Pcs/Box 07945800242
L15S 150 150. L15S150 L15S150.T 10 Pcs/Box 07945800243
L15S 200 200. L15S200 L15S200.T 10 Pcs/Box 07945800244
L15S 250 250. L15S250 L15S250.T 10 Pcs/Box 07945800245
L15S 300 300. L15S300 L15S300.T 10 Pcs/Box 07945800246
L15S 350 350. L15S350 L15S350.T 10 Pcs/Box 07945800247
L15S 400 400. L15S400 L15S400.T 10 Pcs/Box 07945800248
L15S 450 450. L15S450 L15S450.T 10 Pcs/Box 07945800249
L15S 500 500. L15S500 L15S500.V 5 Pcs/Box 07945800250
L15S 600 600. L15S600 L15S600.V 5 Pcs/Box 07945800251
L15S 800 800. L15S800 L15S800.V 5 Pcs/Box 07945800252
L15S 1000 1000 L15S1000 L15S1000V 5 Pcs/Box 07945800253
L15S SERIES TRADITIONAL HIGH-SPEED FUSES
135
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
L15S SERIES TRADITIONAL HIGH-SPEED FUSES
AMPERE
RATING
FIG.
NO.
DIMENSIONS INCHES (MM)
A B C D E F G H
1 – 30 1 11⁄2 (38.1) — 3⁄8 (9.5) 13⁄32 (10.3) — — — —
31 – 60 1 2 (50.8) — 5⁄8 (15.9) 13⁄16 (20.6) — — — —
61 – 450 2 15⁄32 (29.4) 17⁄8 (47.6) 23⁄16 (55.6) 221⁄32 (67.5) 1 (25.4) 43⁄64 (17.1) 5⁄16 (7.9) 3⁄16 (4.8)
451 – 1000 2 11⁄4 (31.8) 115⁄16 (49.2) 29⁄16 (65.1) 31⁄2 (88.9) 11⁄2 (38.1) 1 (25.4) 13⁄32 (10.3) 1⁄4 (6.4)
Dimensions
A
B
C
D
F
G
E
H
Fig. 2
A
C
D
Fig. 1
Figure 1
AMPERE
RATING
FIG.
NO.
DIMENSIONS INCHES (MM)
A B C D E F G H
1 – 30 1 11⁄2 (38.1) — 3⁄8 (9.5) 13⁄32 (10.3) — — — —
31 – 60 1 2 (50.8) — 5⁄8 (15.9) 13⁄16 (20.6) — — — —
61 – 450 2 15⁄32 (29.4) 17⁄8 (47.6) 23⁄16 (55.6) 221⁄32 (67.5) 1 (25.4) 43⁄64 (17.1) 5⁄16 (7.9) 3⁄16 (4.8)
451 – 1000 2 11⁄4 (31.8) 115⁄16 (49.2) 29⁄16 (65.1) 31⁄2 (88.9) 11⁄2 (38.1) 1 (25.4) 13⁄32 (10.3) 1⁄4 (6.4)
Dimensions
A
B
C
D
F
G
E
H
Fig. 2
A
C
D
Fig. 1
Figure 2
136
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
L25S SERIES TRADITIONAL HIGH-SPEED FUSES
250 V ac • Very Fast-Acting • 1–800 A
Specifications
Voltage Ratings Ac: 250 V
Dc: 200 V–250 V
Ampere Range 1 - 800 A
Interrupting Rating Ac: 200 kA
Dc: 20 kA Self Certified
Approvals UL Recognized (File: E71611)
CSA Recognized (File: LR29862)
Time Constant 10ms
Material Body: Melamine
Caps: Copper Alloy (Silver Plated)
Environmental RoHS
Country of Origin Mexico
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to 35 °C with Relative Humidity <65 %
Part Numbering System
L25S xxx .T
Package Quantity
Series
Amperage
(3 digit minimum)
T = (1 A – 60 A)
V = (70 A – 800 A)
SERIES AMPERAGE CATALOG
NUMBER
ORDERING
NUMBER
L25S 1 L25S001 L25S001.T
L25S 100 L25S100 L25S100.V
Recommended Fuse Holders
1LFS101/1LFS102
LSCR001/LSCR002
Web Resources
For additional information, visit: Littelfuse.com/high-speed
Note: High-Speed fuses are designed for fixed installations. They
are not intended for use in moving vehicle applications.
Description
The L25S Series is a traditional North American Bolted style
high-speed fuse for protection of power semiconductor
devices that are rated up to 250 V ac and 200 V dc.
Littelfuse POWR-SPEED® products offer optimized circuit
protection at the extremely fast speed required to protect
power semiconductor devices such as silicon controlled
rectifiers (SCR’s), diodes, thyristors, triacs, transistors, and
similar solid-state devices. These devices are used in power
equipment including variable speed drives, power rectifiers,
UPS systems, dc power supplies, and in a wide range of
electronic equipment. May be used wherever extremely
fast-acting, current-limiting fuses are used with no time
delay required.
Features/Benefits
Compliance with US and Canadian requirements Traditional North American Bolted Style dimensions
Class aR performance Direct bus-bar mount or stud mount design
RoHS compliant applications
Applications
Power converters (inverters, rectifiers, UPS)
Power supplies
Industrial heaters
Variable speed drives
Battery chargers
Soft starters
137
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
Electrical Specifications
CATALOG NUMBER AMPERAGE RATING
VOLTAGE RATING INTERRUPT RATING
AC DC AC DC
L25S001 1 250 250 200 kA 20 kA
L25S002 2 250 250 200 kA 20 kA
L25S003 3 250 250 200 kA 20 kA
L25S004 4 250 250 200 kA 20 kA
L25S005 5 250 250 200 kA 20 kA
L25S006 6 250 250 200 kA 20 kA
L25S008 8 250 250 200 kA 20 kA
L25S010 10 250 250 200 kA 20 kA
L25S012 12 250 250 200 kA 20 kA
L25S015 15 250 250 200 kA 20 kA
L25S020 20 250 250 200 kA 20 kA
L25S025 25 250 250 200 kA 20 kA
L25S030 30 250 250 200 kA 20 kA
L25S035 35 250 250 200 kA 20 kA
L25S040 40 250 250 200 kA 20 kA
L25S045 45 250 250 200 kA 20 kA
L25S050 50 250 250 200 kA 20 kA
L25S060 60 250 250 200 kA 20 kA
L25S070 70 250 250 200 kA 20 kA
L25S080 80 250 250 200 kA 20 kA
L25S090 90 250 250 200 kA 20 kA
L25S100 100 250 250 200 kA 20 kA
L25S125 125 250 250 200 kA 20 kA
L25S150 150 250 250 200 kA 20 kA
L25S175 175 250 250 200 kA 20 kA
L25S200 200 250 250 200 kA 20 kA
L25S225 225 250 200 200 kA 20 kA
L25S250 250 250 200 200 kA 20 kA
L25S275 275 250 200 200 kA 20 kA
L25S300 300 250 200 200 kA 20 kA
L25S350 350 250 200 200 kA 20 kA
L25S400 400 250 200 200 kA 20 kA
L25S450 450 250 200 200 kA 20 kA
L25S500 500 250 200 200 kA 20 kA
L25S600 600 250 200 200 kA 20 kA
L25S700 700 250 200 200 kA 20 kA
L25S800 800 250 200 200 kA 20 kA
L25S SERIES TRADITIONAL HIGH-SPEED FUSES
138
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
SERIES AMPERAGE AMPERE CODE CATALOG
NUMBER
ORDERING
NUMBER PACK QUANTITY UPC
L25S 1 001. L25S001 L25S001.T 10 Pcs/Box 07945884001
L25S 2 002. L25S002 L25S002.T 10 Pcs/Box 07945884002
L25S 3 003. L25S003 L25S003.T 10 Pcs/Box 07945884003
L25S 4 004. L25S004 L25S004.T 10 Pcs/Box 07945884004
L25S 5 005. L25S005 L25S005.T 10 Pcs/Box 07945884005
L25S 6 006. L25S006 L25S006.T 10 Pcs/Box 07945884006
L25S 8 008. L25S008 L25S008.T 10 Pcs/Box 07945884008
L25S 10 010. L25S010 L25S010.T 10 Pcs/Box 07945884010
L25S 12 012. L25S012 L25S012.T 10 Pcs/Box 07945884012
L25S 15 015. L25S015 L25S015.T 10 Pcs/Box 07945884015
L25S 20 020. L25S020 L25S020.T 10 Pcs/Box 07945884020
L25S 25 025. L25S025 L25S025.T 10 Pcs/Box 07945884025
L25S 30 030. L25S030 L25S030.T 10 Pcs/Box 07945884030
L25S 35 035. L25S035 L25S035.T 10 Pcs/Box 07945884035
L25S 40 040. L25S040 L25S040.T 10 Pcs/Box 07945884040
L25S 45 045. L25S045 L25S045.T 10 Pcs/Box 07945884045
L25S 50 050. L25S050 L25S050.T 10 Pcs/Box 07945884050
L25S 60 060. L25S060 L25S060.T 10 Pcs/Box 07945884060
L25S 70 070. L25S070 L25S070.V 5 Pcs/Box 07945884070
L25S 80 080. L25S080 L25S080.V 5 Pcs/Box 07945884080
L25S 90 090. L25S090 L25S090.V 5 Pcs/Box 07945884090
L25S 100 100. L25S100 L25S100.V 5 Pcs/Box 07945884100
L25S 125 125. L25S125 L25S125.V 5 Pcs/Box 07945884125
L25S 150 150. L25S150 L25S150.V 5 Pcs/Box 07945884150
L25S 175 175. L25S175 L25S175.V 5 Pcs/Box 07945884175
L25S 200 200. L25S200 L25S200.V 5 Pcs/Box 07945884200
L25S 225 225. L25S225 L25S225.V 5 Pcs/Box 07945884225
L25S 250 250. L25S250 L25S250.V 5 Pcs/Box 07945884250
L25S 275 275. L25S275 L25S275.V 5 Pcs/Box 07945884275
L25S 300 300. L25S300 L25S300.V 5 Pcs/Box 07945884300
L25S 350 350. L25S350 L25S350.V 5 Pcs/Box 07945884350
L25S 400 400. L25S400 L25S400.V 5 Pcs/Box 07945884400
L25S 450 450. L25S450 L25S450.V 5 Pcs/Box 07945884450
L25S 500 500. L25S500 L25S500.V 5 Pcs/Box 07945884500
L25S 600 600. L25S600 L25S600.V 5 Pcs/Box 07945884600
L25S 700 700. L25S700 L25S700.V 5 Pcs/Box 07945884700
L25S 800 800. L25S800 L25S800.V 5 Pcs/Box 07945884800
Ordering Information
Note: High-Speed fuses are designed for fixed installations. They are not intended for use in moving vehicle applications.
L25S SERIES TRADITIONAL HIGH-SPEED FUSES
139
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
A 5
B
C
D
F
G
E
H
Fig. 3
AMPERE
RATING
FIG.
NO.
DIMENSIONS INCHES (MM)
A B C D E F G H
1 – 30 1 2 (50.8) — 1⁄2 (12.7) 9
⁄16 (14.3) — — — —
31 – 60 2 15⁄8 (41.3) 21⁄4 (57.2) 21⁄2 (63.5) 33⁄16 (81.0) 13⁄16 (20.6) 23⁄32 (18.3) 11⁄32 (8.7) 1⁄8 (3.2)
61 – 200 3 15⁄8 (41.3) 25⁄16 (58.7) 27⁄16 (61.9) 31⁄8 (79.4) 17⁄32 (31.0) 1 (25.4) 5⁄16 (7.9) 3⁄16 (4.8)
201 – 700 3 119⁄32 (40.5) 29⁄32 (57.9) 229⁄32 (73.8) 327⁄32 (97.6) 11⁄2 (38.1) 1 (25.4) 13⁄32 (10.3) 1⁄4 (6.4)
701 – 800 3 119⁄32 (40.5) 29⁄32 (57.9) 229⁄32 (73.8) 327⁄32 (97.6) 2 (50.8) 11⁄2 (38.1) 13⁄32 (10.3) 1⁄4 (6.4)
E
H
F
G
A
B
C
D
Fig, 2
A
C
D
Fig. 1
Dimensions
Note: High-Speed fuses are designed for fixed installations. They are not intended for use in moving vehicle applications.
Figure 1 Figure 2 Figure 3
L25S SERIES TRADITIONAL HIGH-SPEED FUSES
140
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
600 V ac • Very Fast-Acting • 1–800 A
Description
The L60S and KLC series is a traditional North American
style high-speed fuse for protection of power semiconductor
devices that are rated up to 600 V ac. These fuse series
are typically used for replacement purposes only. For new
designs L70QS series is recommended.
Features/Benefits
Compliance with US and Canadian requirements
Traditional North American cylindrical & bolted
style dimensions
Class aR performance
Applications
Small power converters
Power supplies
Control circuits
Specifications
Voltage Rating 600 V ac
Ampere Range 1–800 A
Interrupting Rating 200 kA rms
Approvals UL Recognized (File: E71611)
CSA Recognized (File: LR29862)
Country of Origin Mexico
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to 35 °C with Relative Humidity <65 %
Part Numbering System
xxxx xxx .X
Package Quantity
Series
Amp Code
Refer to Amp Code
Column in Ordering
Information Table
L60S
KLC X = 1 (110–80 0A)
V = 5 (70–100 A)
T = 10 (1–60 A)
Recommended Fuse Holders
1LFS101/1LFS102
LSCR001/LSCR002
Web Resources
For additional information, visit: Littelfuse.com/high-speed
Ordering Information
See the next two pages.
L60S Series
KLC Series
L60S/KLC SERIES TRADITIONAL HIGH-SPEED FUSES
141
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
L60S/KLC SERIES TRADITIONAL HIGH-SPEED FUSES
L60S SERIES
SERIES AMPERAGE AMPERE CODE CATALOG NUMBER ORDERING NUMBER PACK QUANTITY UPC
L60S 1 001. L60S001 L60S001.T 10 Pcs/Box 07945810100
L60S 2 002. L60S002 L60S002.T 10 Pcs/Box 07945810101
L60S 3 003. L60S003 L60S003.T 10 Pcs/Box 07945810102
L60S 4 004. L60S004 L60S004.T 10 Pcs/Box 07945810103
L60S 5 005. L60S005 L60S005.T 10 Pcs/Box 07945810104
L60S 6 006. L60S006 L60S006.T 10 Pcs/Box 07945810105
L60S 8 008. L60S008 L60S008.T 10 Pcs/Box 07945810107
L60S 10 010. L60S010 L60S010.T 10 Pcs/Box 07945810108
L60S 12 012. L60S012 L60S012.T 10 Pcs/Box 07945810109
L60S 15 015. L60S015 L60S015.T 10 Pcs/Box 07945810110
L60S 17.5 17.5 L60S17.5 L60S17.5T 10 Pcs/Box 07945810135
L60S 20 020. L60S020 L60S020.T 10 Pcs/Box 07945810111
L60S 25 025. L60S025 L60S025.T 10 Pcs/Box 07945810112
L60S 30 030. L60S030 L60S030.T 10 Pcs/Box 07945810113
L60S 35 035. L60S035 L60S035.T 10 Pcs/Box 07945810114
L60S 40 040. L60S040 L60S040.T 10 Pcs/Box 07945810115
L60S 45 045. L60S045 L60S045.T 10 Pcs/Box 07945810116
L60S 50 050. L60S050 L60S050.T 10 Pcs/Box 07945810117
L60S 60 060. L60S060 L60S060.T 10 Pcs/Box 07945810118
L60S 70 070. L60S070 L60S070.V 5 Pcs/Box 07945810119
L60S 80 080. L60S080 L60S080.V 5 Pcs/Box 07945810120
L60S 90 090. L60S090 L60S090.V 5 Pcs/Box 07945810121
L60S 100 100. L60S100 L60S100.V 5 Pcs/Box 07945810122
L60S 125 125. L60S125 L60S125.X 1 Pcs/Box 07945810123
L60S 150 150. L60S150 L60S150.X 1 Pcs/Box 07945810124
L60S 175 175. L60S175 L60S175.X 1 Pcs/Box 07945810125
L60S 200 200. L60S200 L60S200.X 1 Pcs/Box 07945810126
L60S 225 225. L60S225 L60S225.X 1 Pcs/Box 07945810137
L60S 250 250. L60S250 L60S250.X 1 Pcs/Box 07945810127
L60S 300 300. L60S300 L60S300.X 1 Pcs/Box 07945810128
L60S 350 350. L60S350 L60S350.X 1 Pcs/Box 07945810129
L60S 400 400. L60S400 L60S400.X 1 Pcs/Box 07945810130
L60S 450 450. L60S450 L60S450.X 1 Pcs/Box 07945810131
L60S 500 500. L60S500 L60S500.X 1 Pcs/Box 07945810132
L60S 600 600. L60S600 L60S600.X 1 Pcs/Box 07945810133
L60S 700 700. L60S700 L60S700.X 1 Pcs/Box 07945810136
L60S 800 800. L60S800 L60S800.X 1 Pcs/Box 07945810134
Ordering Information
Note: High-Speed fuses are designed for fixed installations. They are not intended for use in moving vehicle applications.
142
Fuses
Littelfuse.com © 2022 Littelfuse, Inc.
Fuses – High-Speed
High-Speed Fuses
5
L60S/KLC SERIES TRADITIONAL HIGH-SPEED FUSES
KLC* SERIES
SERIES AMPERAGE AMPERE CODE CATALOG NUMBER ORDERING NUMBER PACK QUANTITY UPC
KLC 1 001. KLC001 0KLC001.T 10 Pcs/Box 07945823031
KLC 2 002. KLC002 0KLC002.T 10 Pcs/Box 07945823041
KLC 3 003. KLC003 0KLC003.T 10 Pcs/Box 07945823047
KLC 4 004. KLC004 0KLC004.T 10 Pcs/Box 07945823053
KLC 5 005. KLC005 0KLC005.T 10 Pcs/Box 07945823055
KLC 6 006. KLC006 0KLC006.T 10 Pcs/Box 07945823058
KLC 7 007. KLC007 0KLC007.T 10 Pcs/Box 07945823061
KLC 8 008. KLC008 0KLC008.T 10 Pcs/Box 07945823063
KLC 10 010. KLC010 0KLC010.T 10 Pcs/Box 07945823065
KLC 12 012. KLC012 0KLC012.T 10 Pcs/Box 07945823066
KLC 15 015. KLC015 0KLC015.T 10 Pcs/Box 07945823068
KLC 17.5 17.5 KLC17.5 0KLC17.5T 10 Pcs/Box 07945823069
KLC 20 020. KLC020 0KLC020.T 10 Pcs/Box 07945823071
KLC 25 025. KLC025 0KLC025.T 10 Pcs/Box 07945823072
KLC 30 030. KLC030 0KLC030.T 10 Pcs/Box 07945823073
KLC 35 035. KLC035 0KLC035.T 10 Pcs/Box 07945823074
KLC 40 040. KLC040 0KLC040.T 10 Pcs/Box 07945823075
KLC 45 045. KLC045 0KLC045.T 10 Pcs/Box 07945823076
KLC 50 050. KLC050 0KLC050.T 10 Pcs/Box 07945823077
KLC 60 060. KLC060 0KLC060.T 10 Pcs/Box 07945823078
KLC 70 070. KLC070 0KLC070.V 5 Pcs/Box 07945823079
KLC 80 080. KLC080 0KLC080.V 5 Pcs/Box 07945823080
KLC 90 090. KLC090 0KLC090.V 5 Pcs/Box 07945823081
KLC 100 100. KLC100 0KLC100.V 5 Pcs/Box 07945823082
KLC 110 110. KLC110 0KLC110.X 1 Pcs/Box 07945823083
KLC 125 125. KLC125 0KLC125.X 1 Pcs/Box 07945823084
KLC 150 150. KLC150 0KLC150.X 1 Pcs/Box 07945823086
KLC 175 175. KLC175 0KLC175.X 1 Pcs/Box 07945823087
KLC 200 200. KLC200 0KLC200.X 1 Pcs/Box 07945823088
KLC 225 225. KLC225 0KLC225.X 1 Pcs/Box 07945823089
KLC 250 250. KLC250 0KLC250.X 1 Pcs/Box 07945823090
KLC 300 300. KLC300 0KLC300.X 1 Pcs/Box 07945823091
KLC 350 350. KLC350 0KLC350.X 1 Pcs/Box 07945823092
KLC 400 400. KLC400 0KLC400.X 1 Pcs/Box 07945823093
KLC 450 450. KLC450 0KLC450.X 1 Pcs/Box 07945823095
KLC 500 500. KLC500 0KLC500.X 1 Pcs/Box 07945823096
KLC 600 600. KLC600 0KLC600.X 1 Pcs/Box 07945823098
KLC 700 700. KLC700 0KLC700.X 1 Pcs/Box 07945823101
KLC 800 800. KLC800 0KLC800.X 1 Pcs/Box 07945823103
*KLC series fuses are recommended for replacement use only.
Ordering Information
Note: High-Speed fuses are designed for fixed installations. They are not intended for use in moving vehicle applications.
143
Fuses
© 2022 Littelfuse, Inc. Littelfuse.com
Fuses – High-Speed
High-Speed Fuses
5
L60S/KLC SERIES TRADITIONAL HIGH-SPEED FUSES
A
B
C
D
F
G
E
H
Fig. 3
AMPERE
RATING
FIG.
NO.
DIMENSIONS INCHES (MM)
A B C D E F G H
L60S SERIES, 600 V AC
1 – 30 1 5 (127.0) — 5
⁄8 (15.9) 13⁄16 (20.6) — — — —
31 – 60 2 225⁄32 (70.6) 37⁄16 (87.3) 311⁄16 (93.7) 43⁄8 (111.1) 13⁄16 (20.6) 23⁄32 (18.3) 11⁄32 (8.7) 1⁄8 (3.2)
61 – 100 2 229⁄32 (73.8) 317⁄32 (89.7) 325⁄32 (96.0) 415⁄32 (113.5) 11⁄16 (27.0) 23⁄32 (18.3) 11⁄32 (8.7) 1⁄8 (3.2)
101 – 200 2 229⁄32 (73.8) 39⁄16 (90.5) 33⁄4 (95.3) 413⁄32 (111.9) 15⁄16 (33.3) 1 (25.4) 5⁄16 (7.9) 3⁄16 (4.8)
201 – 400 2 229⁄32 (73.8) 331⁄32 (100.8) 45⁄32 (105.6) 51⁄8 (130.2) 137⁄64 (40.1) 1 (25.4) 13⁄32 (10.3) 1⁄4 (6.4)
401 – 600 2 27⁄8 (73.0) 331⁄32 (100.8) 49⁄64 (105.2) 51⁄8 (130.2) 21⁄16 (52.8) 11⁄2 (38.1) 13⁄32 (10.3) 1⁄4 (6.4)
601 – 800 2 31⁄32 (77.0) 55⁄32 (133.4) 511⁄32 (135.7) 71⁄4 (184.2) 21⁄2 (63.5) 2 (50.8) 17⁄32 (13.5) 3⁄8 (9.5)
KLC SERIES, 600 V AC
1 – 30 2 17⁄8 (47.6) 21⁄2 (63.5) — 27⁄8 (73.0) 9⁄16 (14.3) 13⁄32 (10.3) 1⁄4 (6.4) 3⁄64 (1.2)
31 – 60 2 23⁄4 (69.9) 33⁄8 (85.7) 35⁄8 (92.1) 45⁄16 (109.5) 13⁄16 (20.6) 23⁄32 (18.3) 11⁄32 (8.7) 1⁄8 (3.2)
61 – 100 3 27⁄8 (73.0) 321⁄32 (92.9) 41⁄16 (103.2) 5 (127.0) 1 (25.4) 3⁄4 (19.1) 13⁄32 (10.3) 1⁄8 (3.2)
101 – 200 3 227⁄32 (72.2) 317⁄32 (89.7) 43⁄8 (111.1) 53⁄32 (129.4) 11⁄2 (38.1) 1 (25.4) 13⁄32 (10.3) 1⁄4 (6.4)
201 – 400 3 227⁄32 (72.2) 421⁄32 (118.3) 427⁄32 (123.0) 61⁄4 (158.8) 2 (50.8) 15⁄8 (41.3) 9⁄16 (14.3) 1⁄4 (6.4)
401 – 800 3 227⁄32 (72.2) 421⁄32 (118.3) 511⁄32 (135.7) 61⁄4 (158.8) 21⁄2 (63.5) 2 (50.8) 9⁄16 (14.3) 3⁄8 (9.5)
E
H
F
G
A
B
C
D
Fig, 2
A
C
D
Fig. 1
Dimensions
Disclaimer Notice – Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining
or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury,
death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose
not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as
set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.
Littelfuse.com/Product-Disclaimer
Note: High-Speed fuses are designed for fixed installations. They are not intended for use in moving vehicle applications.
Littelfuse.com 144 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES INDICATING FUSE BLOCKS
Smaller Footprint
Provides Space Savings
DIN-Rail Mounting
Eases Installation
Indication Improves
Functionality
An Indication of Value
The Littelfuse LF Series Fuse Blocks and Covers offer
generous space savings and a greater value over previous
generations. View the different series classes for available
indication, snap-to-release DIN rail mounting, universal
mounting holes and touch-safe covers.
© 2022 Littelfuse, Inc. 145 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
600 V
Specifications
Voltage Ratings 600 V
Ampere Ratings 0–600 A
Leakage Current <0.6 mA at 600 V
Materials:
Base Thermoplastic
Fuse Clip Tin plated copper alloy
Box Lug Aluminum
Pressure Plate Zinc plated steel
Screw Zinc plated steel
Flammability Rating UL 94 V-0
Approvals UL Listed (File: E14721)
CSA Certified (File: LR7316)
Environmental RoHS Compliant, Lead (Pb) Free
REACH Compliant
Recommended Fuses
Time Delay
Series: JTD_ID
Series: JTD
Fast Acting
Series: JLS
For information about touch-safe Class J fuse holders, visit:
Littelfuse.com/lfpsj
Web Resources
For sample requests, downloadable CAD drawings, fuse
block cover datasheet and other technical information, visit:
Littelfuse.com/fuseblocks
Littelfuse.com/lfj
Description
The Littelfuse 600 V Class J blocks offer generous space
savings and enhanced value over previous generations, such
as indication, snap-to-release DIN-rail mounting and universal
mounting holes.
Features/Benefits
Space-saving design—up to 45 % smaller
Universal mounting holes for easy replacement Indication offered on all versions except 200–600 A One hand release from DIN rail for ferrule style fuses
Reinforced fuse clips are standard on all Class J blocks
Covers available for 100 A and lower to enhance safety
Both hex and slot set screw options available on 30 A
and 60 A box lugs
Ordering Information (Class J 600 V) AMPERE RATING POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE
RANGE WIRE TYPE
BASE
TEMP
RATING
DIN RAIL
INDICATION
COVER
ORDERING
NUMBER*
BASE
PART
NUMBER
TERMINAL SUFFIX
BOX LUG
HEX
BOX LUG
SLOT
PRESSURE
PLATE SCREW
30
1 LFJ600301 CID-HX CID PID SID
2.8 N-m (25 in-lbs)
C 6–14 AWG CU
Only
Solid / Stranded
2 LFJ600302 CID-HX CID PID SID P 10–14 AWG 125 °C • • LFJ60030FBC
3 LFJ600303 CID-HX CID PID SID S 10–22 AWG
60
1 LFJ600601 CID-HX CID — — 5.6 N-m (50 in-lbs) 2–4 AWG
2 LFJ600602 CID-HX CID — — CU-AL 125 °C • • LFJ60060FBC
2.8 N-m (25 in-lbs) 6–14 AWG 3 LFJ600603 CID-HX CID — —
100
1 LFJ601001 CID — — — 13.6 N-m (120 in-lbs) 2/0–6 AWG
4.5 N-m (40 in-lbs) 8 AWG CU-AL 130 °C — • LFJ60100FBC**
3 LFJ601003 CID — — — 4.0 N-m (35 in-lbs) 10–14 AWG
200 1 LFJ602001 C — — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130 °C — — — 3 LFJ602003 C — — —
400 1 LFJ604001 C — — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130 °C — — — 3 LFJ604003 C — — —
600 1 LFJ606001 C — — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130 °C — — — 3 LFJ606003 C — — —
Note: Reinforcing springs standard on all Class J fuse blocks.
*Covers sold individually. One cover needed for each pole.
**Cover is not compatible with 70–100 A JLS series fuses
Patent
US8810420
LF SERIES CLASS J FUSE BLOCKS
Littelfuse.com 146 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
B OL-LFJ60030CID Littelfuse
® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 3/21/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
LFJ60030-CID SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/21/2011 501865ERP - RELEASE MRY
B 6/11/2015 514412ECP/D - ADD DIMENSION TOLERANCES MRY
SERIES
43.2 1.00
[1.70 0.039]
56.5 1.00
[2.23 0.039]
7.4 0.50 [0.29 0.020]
12.5 0.50 [0.49 0.020]
21.4 0.50 [0.84 0.020]
21.8 0.50 [0.86 0.020]
29.2 0.50 [1.15 0.020] 55.9 0.50 [2.20 0.020]
34.0 0.50 [1.34 0.020]
39.2 0.50 [1.54 0.020]
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 30 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 2.8 N-m (25 IN-LBS)
WIRE RANGE: 6 -14 AWG Cu ONLY
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
R2.8 0.10 [0.11 0.004]
TYP.
9.50.10 5.10.25
[0.380.00 0.200.01]
9.50.10 5.10.25
[0.380.00 0.200.01]
R2.8 0.10 [0.11 0.004]
TYP
43.2 1.00
[1.70 0.039]
56.5 1.00
[2.23 0.039]
9.50.10 5.10.25
[0.380.00 0.200.01]
R2.8 0.10 [0.11 0.004]
TYP
5.60.25 THRU
[0.220.01 THRU]
5.60.25 THRU
[0.220.01 THRU]
5.60.25 THRU
[0.220.01 THRU]
3.6
[0.14]
REF
94.1 1.00 [3.71 0.039]
43.2 1.00
[1.70 0.039]
56.5 1.00 [2.23 0.039]
82.6 0.50 [3.25 0.020]
65.9 0.50 [2.59 0.020]
60.7 0.50 [2.39 0.020]
49.5 1.00 [1.95 0.039]
17.8
[0.70]
REF
600 V 30 A
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
C OL-LFJ60060 Littelfuse
® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 3/21/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
LFJ60060 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/21/2011 501865ERP - RELEASE MRY
B 2/9/2012 504264ECP - UPDATE TORQUE LDL
C 6/11/2015 514412ECP/D - ADD DIMENSION TOLERANCES MRY
97.2 1.00 [3.83 0.039]
3.6
[0.14]
REF
42.4 0.50 [1.67 0.020]
12.0 0.50 [0.47 0.020]
22.5 0.50 [0.89 0.020]
32.9 0.50 [1.30 0.020]
52.5 1.00 [2.07 0.039]
81.2 0.50 [3.20 0.020]
50.8 0.50 [2.00 0.020]
119.9 0.50 [4.72 0.020]
89.5 0.50 [3.52 0.020]
56.9 1.00 [2.24 0.039]
21.1
[0.83]
REF
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 60 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 2.8 N-m (25 IN-LBS) 6-14 AWG
5.6 N-m (50 IN-LBS) 2-4 AWG
WIRE RANGE: 2 -14 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
R3.4 0.15 [0.13 0.006]
TYP
52.5 1.00 [2.07 0.039]
R3.4 0.15 [0.13 0.006]
TYP
52.4 1.00 [2.06 0.039] R3.4 0.15 [0.13 0.006]
TYP
REVISION
REV DATE DESCRIPTION
A 3/21/2011 501865ERP - RELEASE MRY
138.2 [5.44]
48.8 [1.92]
5.3 [.21]
11.7 [.46]
37.1 [1.46]
72.5 [2.86]
R3.6 [.14]
TYP.
136.1 [5.36]
17.3 [.68]
49.0 [1.93]
87.1 [3.43]
72.5 [2.86]
n7.1 THRU
v n13.5 x 15.2
n.28 THRU [ ] v n.53 x .60
66.5 [2.62]
21.0 [.83]
600 V 60 A
600 V 100 A
Dimensions mm (inches)
LF SERIES CLASS J FUSE BLOCKS
© 2022 Littelfuse, Inc. 147 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFJ60400 Series Littelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/18/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFJ60400 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 6/13/2011 502552ERP - RELEASE MRY
76.2 [3.00]
254.0 [10.00]
236.7 [9.32]
15.9 [.63]
84.4 [3.32]
12.7 [.50]
16.0 [.63]
60.2 [2.37]
63.5 [2.50]
101.6 [4.00]
146.1 [5.75]
152.4 [6.00]
101.6 [4.00]
152.4 [6.00]
42.2 [1.66]
194.6 [7.66]
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 400 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 31.1 N-m (275in-lb)
WIRE RANGE: 350kcmil-1/0 Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
n8.6 THRU
v n19.1 x 11.2
n.34 THRU [ ] v n.75 x .44
n8.6 THRU
v n19.1 x 11.2
n.34 THRU [ ] v n.75 x .44
R4.3 [.17]
TYP.
n8.6 THRU
v n19.1 x 11.2
n.34 THRU [ ] v n.75 x .44
C
MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
REVISION
REV DATE DESCRIPTION
A 6/13/2011 502552ERP - RELEASE MRY
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 600 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
298.5 [11.75]
101.6 [4.00]
119.0 [4.69]
304.8 [12.00]
15.9 [.63]
110.6 [4.35]
179.5 [7.07]
28.6 [1.13]
73.0 [2.88]
12.7 [.50]
292.1 [11.50]
n7.1 THRU
v n14.2 x 11.2
n.28 THRU [ ] v n.56 x .44
n7.1 THRU
v n14.2 x 11.2
n.28 THRU [ ] v n.56 x .44
119.0 [4.69]
179.5 [7.07]
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFJ60200 Series Littelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/18/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFJ60200 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 6/13/2011 502552ERP - RELEASE MRY
76.2 [3.00]
155.7 [6.13]
203.2 [8.00]
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 200 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 31.1 N-m (275in-lb)
WIRE RANGE: 250kcmil-6 Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
12.7 [.50]
63.5 [2.50]
77.9 [3.07]
56.4 [2.22]
99.3 [3.91]
12.7 [.50]
190.5 [7.50]
15.9 [.63]
72.4 [2.85]
n8.6 THRU
v n19.1 x 10.2
n.34 THRU [ ] v n.75 x .40
n8.6 THRU
v n19.1 x 10.2
n.34 THRU [ ] v n.75 x .40
Dimensions mm (inches)
600 V 400 A
600 V 600 A
600 V 200 A
LF SERIES CLASS J FUSE BLOCKS
Littelfuse.com 148 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES CLASS H/K5 AND R FUSE BLOCKS
250 V • 600 V
Description
The Littelfuse Class H/K5 and R blocks offer many benefits
such as indication, snap-to-release DIN rail mounting and
mounting flexibility for easier installation. Class H and Class
R fuse blocks are dimensionally the same, but Class R blocks
incorporate a rejection feature, which only allows Class R
fuses to be inserted.
Features/Benefits
Accommodates a wide range of existing mounting
configurations
Indication offered on most 250 V and 600 V versions
One hand release from DIN rail for ferrule style fuses
Reinforced fuse clips are standard on all Class H and
Class R fuse blocks
Covers available for 100 A and lower to enhance safety
Both hex and slot set screw options available on 60
Ampere, 600 Volt Class R box lugs
Specifications
Voltage Rating 250 V, 600 V
Ampere Ratings 0-600 A
Leakage Current <0.6 mA at 600 V
Withstand Rating Class H: 10 kA RMS SYM
Class R: 200 kA RMS SYM
Materials:
Base Thermoplastic
Fuse Clip Tin plated copper alloy
Box Lug Aluminum
Pressure Plate Zinc plated steel
Screw Zinc plated steel
Flammability Rating UL94 V-0
Approvals UL Listed (File: E14721)
CSA Certified (File: LR7316)
Environmental RoHS Compliant, Lead (Pb) Free
Recommended Fuses
Class H/K5 Blocks – 250 V
NLN
Class R Blocks – 250 V
FLNR/FLNR_ID, KLNR, LLNRK
Class H/K5 Blocks – 600 V
NLS
Class R Blocks – 600 V
FLSR/FLSR_ID, KLSR, LLSRK/LLSRK_ID, IDSR
Web Resources
Sample requests, downloadable CAD drawings and other
technical information:
Littelfuse.com/lfh
Littelfuse.com/lfr
Ordering Information (Class H 250 V)
AMP
RATING
POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE
RANGE WIRE TYPE
BASE
TEMP
RATING
DIN
RAIL
INDICATION
COVER
ORDERING
NUMBER* BASE PART
NUMBER
SUFFIX
BOX
LUG
PRESSURE
PLATE SCREW
30
1 LFH250301 C P S
2.8 N-m (25 in-lbs)
C 6-14 AWG
CU Only
Solid/
Stranded
2 LFH250302 C P S P 10-14 AWG 125 ˚C • — LFH25030FBC
3 LFH250303 C P S S 10-22 AWG
60
1 LFH250601 CID — — 5.6 N-m (50 in-lbs) 2-4 AWG
2 LFH250602 CID — — CU-AL 125 ˚C • • LFH25060FBC
2.8 N-m (25 in-lbs) 6-14 AWG 3 LFH250603 CID — —
100
1 LFH251001 CID — — 13.6 N-m (120 in-lbs) 2/0-6 AWG
4.5 N-m (40 in-lbs) 8 AWG CU-AL 130 ˚C — • LFH25100FBC
3 LFH251003 CID — — 4.0 N-m (35 in-lbs) 10-14 AWG
200 1 LFH252001 C — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130 ˚C — — — 3 LFH252003 C — —
400 1 LFH254001 C — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130 ˚C — — — 3 LFH254003 C — —
600 1 LFH256001 C — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130 ˚C — — — 3 LFH256003 C — —
Note: Reinforcing springs standard on all Class H fuse blocks. *Covers sold individually. One cover needed for each pole.
© 2022 Littelfuse, Inc. 149 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES CLASS H/K5 AND R FUSE BLOCKS
Note: Reinforcing springs standard on all Class H fuse blocks.
Note: Reinforcing springs standard on all Class R fuse blocks.
Note: Reinforcing springs standard on all Class R fuse blocks. *Covers sold individually. One cover needed for each pole.
Ordering Information (Class R 600 V) AMP RATING POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE
RANGE WIRE TYPE
BASE
TEMP
RATING
SNAP
TO
RELEASE
INDICATION
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
SUFFIX
BOX
LUG
HEX
BOX
LUG
SLOT
PRESSURE
PLATE SCREW
30
1 LFR600301 — CID PID SID
2.8 N-m (25 in-lbs)
C 6-14 AWG
CU Only
Solid/
Stranded
2 LFR600302 — CID PID SID P 10-14 AWG 130 ˚C • • LFH60030FBC
3 LFR600303 — CID PID SID S 10-22 AWG
60
1 LFR600601 CID-HX CID — — 5.6 N-m (50 in-lbs) 2-4 AWG
2 LFR600602 CID-HX CID — — CU-AL 130 ˚C • • LFH60060FBC
2.8 N-m (25 in-lbs) 6-14AWG 3 LFR600603 CID-HX CID — —
100
1 LFR601001 CID — — — 13.6 N-m (120 in-lbs) 2/0-6AWG
4.5 N-m (40 in-lbs) 8 AWG CU-AL 130 ˚C — • LFH60100FBC
3 LFR601003 CID — — — 4.0 N-m (35 in-lbs) 10-14 AWG
200 1 LFR602001 C — — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130 ˚C — — — 3 LFR602003 C — — —
400 1 LFR604001 C — — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130 ˚C — — — 3 LFR604003 C — — —
600 1 LFR606001 C — — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130 ˚C — — — 3 LFR606003 C — — —
Ordering Information (Class R 250 V)
AMP
RATING
POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE
RANGE WIRE TYPE
BASE
TEMP
RATING
SNAP
TO
RELEASE
INDICATION
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
SUFFIX
BOX
LUG
PRESSURE
PLATE SCREW
30
1 LFR250301 C P S
2.8 N-m (25 in-lbs)
C 6-14 AWG
CU Only
Solid/
Stranded
2 LFR250302 C P S P 10-14 AWG 125˚C • — LFH25030FBC
3 LFR250303 C P S S 10-22 AWG
60
1 LFR250601 CID — — 5.6 N-m (50 in-lbs) 2-4 AWG
2 LFR250602 CID — — CU-AL 125˚C • • LFH25060FBC
2.8 N-m (25 in-lbs) 6-14 AWG 3 LFR250603 CID — —
100
1 LFR251001 CID — — 13.6 N-m (120 in-lbs) 2/0-6 AWG
4.5 N-m (40 in-lbs) 8 AWG CU-AL 130˚C — • LFH25100FBC
3 LFR251003 CID — — 4.0 N-m (35 in-lbs) 10-14 AWG
200 1 LFR252001 C — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130˚C — — — 3 LFR252003 C — —
400 1 LFR254001 C — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130˚C — — — 3 LFR254003 C — —
600 1 LFR256001 C — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130˚C — — — 3 LFR256003 C — —
Ordering Information (Class H 600 V)
AMP
RATING
POLES
ORDERING NUMBER
TORQUE
TERMINAL
WIRE
RANGE WIRE TYPE
BASE
TEMP
RATING
SNAP
TO
RELEASE
INDICATION
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
SUFFIX
BOX
LUG
PRESSURE
PLATE SCREW
30
1 LFH600301 CID PID SID
2.8 N-m (25 in-lbs)
C 6-14 AWG
CU Only
Solid/
Stranded
2 LFH600302 CID PID SID P 10-14 AWG 130˚C • • LFH60030FBC
3 LFH600303 CID PID SID S 10-22 AWG
60
1 LFH600601 CID — — 5.6 N-m (50 in-lbs) 2-4 AWG
2 LFH600602 CID — — CU-AL 130˚C • • LFH60060FBC
2.8 N-m (25 in-lbs) 6-14AWG 3 LFH600603 CID — —
100
1 LFH601001 CID — — 13.6 N-m (120 in-lbs) 2/0-6AWG
4.5 N-m (40 in-lbs) 8 AWG CU-AL 130˚C — • LFH60100FBC
3 LFH601003 CID — — 4.0 N-m (35 in-lbs) 10-14 AWG
200 1 LFH602001 C — — 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130˚C — — — 3 LFH602003 C — —
400 1 LFH604001 C — — 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130˚C — — — 3 LFH604003 C — —
600 1 LFH606001 C — — 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130˚C — — — 3 LFH606003 C — —
Littelfuse.com 150 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES CLASS H/K5 AND R FUSE BLOCKS
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFH25030C Littelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/15/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFH25030-C SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/15/2011 501851ERP - RELEASE MRY
31.9 [1.26]
28.6 [1.13] 48.5 [1.91]
6.8 [.27]
74.7 [2.94]
40.1 [1.58]
8.4 [.33] 5.6 [.22]
R2.8 [.11]
TYP
n5.6 THRU
[n.22 THRU]
R2.8 [.11]
TYP
SPECIFICATIONS:
VOLTAGE RATING: 250V
AMPERE RATING: 30 AMPERES
INTERRUPT RATING: 10kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 2.8 N-m (25 IN-LBS)
WIRE RANGE: 6-14 AWG Cu ONLY
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
SERIES
76.5 [3.01]
3.6 [.14]
38.2 [1.51]
44.6 [1.76]
4.8 [.19]
13.0 [.51]
15.6 [.61]
23.8 [.94]
16.3 [.64]
32.2 [1.27]
15.9 [.63]
31.8 [1.25]
42.9 [1.69]
38.2 [1.51] 38.2 [1.51]
R2.8 [.11]
TYP
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFH25060 Series Littelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/15/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFH25060 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/15/2011 501851ERP - RELEASE MRY
119.7 [4.71]
37.3 [1.47]
70.7 [2.78] 104.1 [4.10]
57.4 [2.26]
24.9 [.98]
R2.8 [.11]
TYP
SPECIFICATIONS:
VOLTAGE RATING: 250V
AMPERE RATING: 60 AMPERES
INTERRUPT RATING: 10kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 5.6 N-m (50 IN-LBS) 2-4 AWG
2.8 N-m (25 IN-LBS) 6-14 AWG
WIRE RANGE: 2-14 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
43.9 [1.73]
75.7 [2.98]
9.7 [.38]
14.8 [.58]
22.4 [.88]
55.8 [2.20]
43.1 [1.70]
5.5 [.21]
89.2 [3.51]
76.5 [3.01]
43.9 [1.73]
75.7 [2.98]
R2.8 [.11]
TYP
R2.8 [.11]
TYP
REVISION
REV DATE DESCRIPTION
A 3/15/2011 501851ERP - RELEASE MRY
B 12/8/2016 516738ECP/D - ADD TOLERANCES MRY
177.8 0.50 [7.00 0.02]
46.0 0.50 [1.81 0.02]
126.3 0.50 [4.97 0.02]
66.0 0.50 [2.60 0.02]
22.9 0.50 [.90 0.02]
R3.4 [.13]
TYP
53.6 0.50 [2.11 0.02]
72.6 0.50 [2.86 0.02]
133.0 0.50 [5.23 0.02]
11.3 0.50 [.45 0.02]
20.3 0.50 [.80 0.02]
34.7 0.50 [1.37 0.02] 60.5 0.50 [2.38 0.02]
100.6 0.50 [3.96 0.02]
51.5 0.50 [2.03 0.02]
91.6 0.50 [3.61 0.02]
53.6 0.50 [2.11 0.02]
72.6 0.50 [2.86 0.02]
133.0 0.50 [5.23 0.02]
R3.4 [.13]
TYP
250 V 30 A
250 V 60 A
250 V 100 A
Dimensions mm (inches)
© 2022 Littelfuse, Inc. 151 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES CLASS H/K5 AND R FUSE BLOCKS
DES PLAINES, ILLINOIS3RD ANGLE
PROJECTION
LittelfuTITLE
DRW DATE
M. York 3/15/2MATL SPEC UNLESS OTHERWISE SPECIBRACKETS [ ] ARE INCHES DITO BE INTERPRDENOTES CDENOTES CDENOTES AOF PROCESAND TRACKLITTELFUSEDENOTES CMUST BE WSHOWN ONALLOW FORCPK
?
CP
REV DATE A 5/24/2011 181.1 [7.13]
76.2 [3.00]
228.6 [9.00]
n8.6 THRU
[n.34 THRU]
72.4 [2.85]
15.9 [.63]
n8.7 THRU
v n19.1 x 10.2
n.34 THRU [ ] v n.75 x .40
R4.3 [.17]
TYP
63.5 [2.50]
12.7 [.50]
SPECIFICATIONS:
VOLTAGE RATING: 250V
AMPERE RATING: 200 AMPERES
INTERRUPT RATING: 10kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 31.1 N-m (275 IN-LBS)
WIRE RANGE: 250kcmil-6 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
63.5 [2.50]
52.6 [2.07]
128.5 [5.06]
12.7 [.50]
19.1 [.75]
165.1 [6.50]
184.2 [7.25]
215.9 [8.50]
52.5 [2.07]
128.7 [5.07]
n19.1 x 9.5
[n.75 x .38]
n8.6 THRU
[n.34 THRU]
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFH25400 Series Littelfuse® REVISION DRWG NO.
TITLE
D
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/15/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFH25400 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 5/24/2011 501832ERP - RELEASE MRY
88.9 [3.50]
292.1 [11.50]
95.3 [3.75]
15.9 [.63]
266.7 [10.50]
n8.6 THRU
v n19.1 x 11.2
n.34 THRU [ ] v n.75 x .44
n8.6 THRU
v n19.1 x 11.2
n.34 THRU [ ] v n.75 x .44
84.4 [3.32]
15.9 [.63]
SPECIFICATIONS:
VOLTAGE RATING: 250V
AMPERE RATING: 400 AMPERES
INTERRUPT RATING: 10kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 31.1 N-m (275 IN-LBS)
WIRE RANGE: 350kcmil-1/0 Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
108.0 [4.25]
184.2 [7.25]
22.2 [.88]
66.7 [2.63]
95.3 [3.75]
196.9 [7.75]
15.9 [.63]
250.8 [9.88]
D
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
REVISION
REV DATE DESCRIPTION
A 5/24/2011 501832ERP - RELEASE MRY
355.6 [14.00]
114.3 [4.50]
114.3 [4.50]
317.5 [12.50]
19.1 [.75]
114.3 [4.50]
n7.1 THRU
v n14.2 x 11.2
n.28 THRU [ ] v n.56 x .44
110.6 [4.35]
15.9 [.63]
n7.1 THRU
v n14.2 x 11.2
n.28 THRU [ ] v n.56 x .44
n8.6 THRU
v n19.1 x 11.2
n.34 THRU [ ] v n.75 x .44
SPECIFICATIONS:
VOLTAGE RATING: 250V
AMPERE RATING: 600 AMPERES
INTERRUPTRATING:10kA139.7 [5.50]
215.9 [8.50]
19.1 [.75]
34.9 [1.38]
79.4 [3.13]
241.3 [9.50]
298.5 [11.75]
250 V 200 A
250 V 400 A
250 V 600 A
Dimensions mm (inches)
Littelfuse.com 152 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES CLASS H/K5 AND R FUSE BLOCKS
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFH60030CID Littelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/15/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFH60030-CID SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/15/2011 501851ERP - RELEASE MRY
166.7 [6.56]
38.4 [1.51]
73.1 [2.88] 107.9 [4.25]
20.7 [.82]
52.5 [2.07]
R3.4 [.13]
TYP
R2.6 [.10]
TYP
SERIES
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 30 AMPERES
INTERRUPT RATING: 10kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 2.8 N-m (25 IN-LBS)
WIRE RANGE: 6-14 AWG Cu ONLY
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
47.6 [1.87]
56.0 [2.20]
118.6 [4.67]
127.1 [5.00]
16.8 [.66]
21.5 [.85]
6.4 [.25]
19.2 [.76] 51.6 [2.03]
41.1 [1.62] 75.9 [2.99]
86.4 [3.40]
47.6 [1.87] 56.0 [2.20]
R3.4 [.13]
TYP
R2.6 [.10]
TYP
R3.4 [.13]
TYP
R2.6 [.10]
TYP
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
B OL-LFH60060 Littelfuse
® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 3/15/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
LFH60060 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/15/2011 501851ERP - RELEASE MRY
B 3/2/2017 517214ECP/D - ADD DIMENSION TOLERANCES MRY
184.2 1.50 [7.25 0.06]
43.8 1.00 [1.73 0.04]
7.1 THRU
12.7 12.7
.28 THRU
[ .50 .50]
R3.4 [.13]
TYP
83.6 1.00 [3.29 0.04] 123.3 1.00 [4.86 0.04]
59.7 0.50 [2.35 0.02]
22.9 0.50 [.90 0.02]
SERIES
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 60 AMPERES
INTERRUPT RATING: 10kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 5.6 N-m (50 IN-LBS) 2-4 AWG
2.8 N-m (25 IN-LBS) 6-14 AWG
WIRE RANGE: 2-14 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
55.2 0.50 [2.18 0.02]
74.2 0.50 [2.92 0.02]
134.6 0.50 [5.30 0.02]
11.4 0.50 [.45 0.02]
19.9 0.50 [.78 0.02]
29.8 0.50 [1.17 0.02]
32.4 0.50 [1.28 0.02]
59.6 0.50 [2.35 0.02]
69.5 0.50 [2.74 0.02]
99.4 0.50 [3.91 0.02]
109.3 0.50 [4.30 0.02]
55.2 0.50 [2.18 0.02]
74.2 0.50 [2.92 0.02]
R3.4 [.13]
TYP
7.1 THRU
12.7 12.7
.28 THRU
[ .50 .50]
R3.4 [.13]
TYP
7.1 THRU
12.7 12.7
.28 THRU
[ .50 .50]
C
DRW DATE
FINISH GOOD WT
MYk3/15/2011MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SCALE
NTSREVISION
REV DATE DESCRIPTION
A 3/15/2011 501851ERP - RELEASE MRY
228.6 [9.00]
R3.4 [.13]
TYP
53.4 [2.10]
145.3 [5.72]
66.0 [2.60]
22.9 [.90]
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 100 AMPERES
INTERRUPT RATING: 10kA
TERMINALTYPEBOXLUG64.6 [2.54]
15.0 [.59]
19.6 [.77]
33.8 [1.33]
172.8 [6.80]
61.0 [2.40]
79.8 [3.14]
107.0 [4.21]
125.7 [4.95]
64.6 [2.54]
172.8 [6.80]
R3.4 [.13]
TYP
600 V 30 A
600 V 60 A
600 V 100 A
Dimensions mm (inches)
© 2022 Littelfuse, Inc. 153 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES CLASS H/K5 AND R FUSE BLOCKS
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFH60200 Series Littelfuse® REVISION DRWG NO.
TITLE
D
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/15/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFH60200 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 5/24/2011 501832ERP - RELEASE MRY
244.3 [9.62]
76.2 [3.00]
12.7 [.50]
52.3 [2.06]
84.2 [3.32]
228.6 [9.00]
12.7 [.50]
31.8 [1.25]
n7.1 THRU
v n18.3 x 10.2
n.28 THRU [ ] v n.72 x .40
n8.7 THRU
v n19.1 x 10.2
n.34 THRU [ ] v n.75 x .40
n8.6 THRU
[n.34 THRU]
R4.3 [.17]
TYP
52.3 [2.06]
72.4 [2.85]
15.9 [.63]
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 200 AMPERES
INTERRUPT RATING: 10kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 31.1 N-m (275 IN-LBS)
WIRE RANGE: 250kcmil-6 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
160.1 [6.31]
192.0 [7.56]
63.5 [2.50]
44.5 [1.75]
63.5 [2.50]
165.1 [6.50]
76.7 [3.02]
84.1 [3.31]
160.3 [6.31]
196.9 [7.75]
n19.1 x 10.2
[n.75 x .40]
n8.6 THRU
[n.34 THRU]
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFH60400 Series Littelfuse® REVISION DRWG NO.
TITLE
D
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/15/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFH60400 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 5/24/2011 501832ERP - RELEASE MRY 88.9 [3.50]
368.3 [14.50]
15.9 [.63]
22.2 [.88]
95.3 [3.75]
146.1 [5.75]
266.7 [10.50]
15.9 [.63]
84.4 [3.32]
15.9 [.63]
n8.6 THRU
v n19.1 x 11.2
n.34 THRU [ ] v n.75 x .44
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 400 AMPERES
INTERRUPT RATING: 10kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 31.1 N-m (275 IN-LBS)
WIRE RANGE: 350kcmil-1/0 Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
222.3 [8.75]
273.1 [10.75]
66.7 [2.63]
73.0 [2.88]
250.8 [9.88]
95.3 [3.75]
273.1 [10.75]
n8.6 THRU
v n19.1 x 11.2
n.34 THRU [ ] v n.75 x .44
3RD ANGLE
PROJECTION
TITLED
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/15/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SCALE
NTS
REVISION
REV DATE DESCRIPTION 114.3 [4.50] A 5/24/2011 501832ERP - RELEASE MRY
431.8 [17.00]
19.1 [.75]
114.3 [4.50]
177.8 [7.00]
317.5 [12.50]
n8.6 THRU
v n19.1 x 11.2
n.34 THRU [ ] v n.75 x .44
110.6 [4.35]
15.9 [.63]
n7.1 THRU
v n14.2 x 11.2
n.28 THRU [ ] v n.56 x .44
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 600 AMPERES
INTERRUPT RATING: 10kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 42.4 N-m (375 IN-LBS)
WIRE RANGE: 500kcmil-4 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
254.0 [10.00]
34.9 [1.38]
79.4 [3.13]
95.3 [3.75]
19.1 [.75]
298.5 [11.75]
114.3 [4.50]
317.5 [12.50]
n7.1 THRU
v n14.2 x 11.2
n.28 THRU [ ] v n.56 x .44
600 V 200 A
600 V 400 A
600 V 600 A
Dimensions mm (inches)
Littelfuse.com 154 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
300 V • 600 V
Specifications
Voltage Ratings 300 V/600 V
Ampere Ratings 0–600 A
Leakage Current <0.6 mA at 600 V
Withstand Rating 200 kA RMS SYM
Materials:
Base Thermoplastic
Fuse Clip Tin plated copper alloy
Box Lug Aluminum
Fuse Studs Zinc plated steel
Pressure Plate Zinc plated steel
Screw Zinc plated steel
Flammability Rating UL 94 V-0
Approvals UL Listed (File: E14721)
CSA Certified (File: LR7316)
Environmental RoHS Compliant, Lead (Pb) Free
Recommended Fuses
300 V JLLN
600 V JLLS
Web Resources
Sample requests, downloadable CAD drawings and other
technical information:
Littelfuse.com/lft
Littelfuse.com/fuseblocks
Description
The Littelfuse Class T fuse blocks offer many advantages
such as space saving design, mounting flexibility for easier
installation, snap-to-release DIN rail mounts and available
covers.
Features/Benefits
Space-saving design Accommodates a wide range of existing mounting
configurations One hand release from DIN rail for 30–60 A fuses
Reinforced fuse clips are standard
Covers available for most amperages to enhance safety Both hex and slot set screw options available on 60 A
box lugs
AMPERE
RATING POLE
ORDERING NUMBER
TORQUE WIRE
RANGE
WIRE
TYPE
BASE TEMP
RATING
DIN RAIL
MOUNT
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
TERMINAL SUFFIX
BOX LUG
HEX
BOX LUG
SLOT
PRESSURE
PLATE SCREW
30
1 LFT300301
— C — —
5.6 N-m (50 in-lbs) 2–4 AWG
CU-AL
Solid/Stranded
2 LFT300302 125 ˚C • LFT30030FBC
2.8 N-m (25 in-lbs) 6–14 AWG 3 LFT300303
60
1 LFT300601
C-HX C — —
5.6 N-m (50 in-lbs) 2–4 AWG
2 LFT300602 125 ˚C • LFT30060FBC
2.8 N-m (25 in-lbs) 6–14 AWG 3 LFT300603
100
1 LFT301001
CS — — —
13.6 N-m (120 in-lbs) 2/0–6 AWG
4.5 N-m (40 in-lbs) 8 AWG 130 ˚C — LFT30100FBC
3 LFT301003 4.0 N-m (35 in-lbs) 10–14 AWG
200 1 LFT302001 CS — — — 31.1 N-m (275 in-lbs) 250 kcmil-6 130 ˚C — — 3 LFT302003
400 1 LFT304001 CS — — — (2) 31.1 N-m (275 in-lbs) 250 kcmil-6 130 ˚C — — 3 LFT304003
600 1 LFT306001 CS — — — (2) 42.4 N-m (375 in-lbs) 500 kcmil-6 130 ˚C — — 3 LFT306003
Ordering Information (Class T 300 V)
LF SERIES CLASS T FUSE BLOCKS
© 2022 Littelfuse, Inc. 155 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
Ordering Information (Class T 600 V)
AMPERE
RATING POLES
ORDERING NUMBER
TORQUE WIRE
RANGE
WIRE
TYPE
BASE TEMP
RATING
DIN RAIL MOUNT
COVER
ORDERING
NUMBER*
BASE
ORDERING
NUMBER
TERMINAL SUFFIX
BOX LUG
HEX
BOX LUG
SLOT
PRESSURE
PLATE SCREW
30
1 LFT600301
— C P S
5.6 N-m (50 in-lbs) 2–4 AWG † see
note
Solid/Stranded
2 LFT600302 125 ˚C • LFT60030FBC
2.8 N-m (25 in-lbs) 6–14 AWG 3 LFT600303
60
1 LFT600601
C-HX C — — 5.6 N-m (50 in-lbs) 2–4 AWG
CU-AL
2 LFT600602 125 ˚C • LFT60060FBC
2.8 N-m (25 in-lbs) 6–14 AWG 3 LFT600603
100
1 LFT601001
CS — — —
13.6 N-m (120 in-lbs) 2/0–6 AWG
4.5 N-m (40 in-lbs) 8 AWG 130 ˚C — LT60100FBC
3 LFT601003 4.0 N-m (35 in-lbs) 10–14 AWG
200 1 LFT602001 CS — — — 31.1 N-m (275 in-lbs) 250 kcmil-6 130 ˚C — LT60200FBC 3 LFT602003
400 1 LFT604001 CS — — — (2) 31.1 N-m (275 in-lbs) 250 kcmil-6 130 ˚C — LT60400FBC 3 LFT604003
600 1 LFT606001 CS — — — (2) 42.4 N-m (375 in-lbs) 500 kcmil-6 130 ˚C — LT60600FBC 3 LFT606003
* Covers sold individually. One cover needed for each pole.
†
Wire type for pressure plate and screw terminal is CU only
LF SERIES CLASS H/K5 AND R FUSE BLOCKS
Littelfuse.com 156 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
B OL-LFT30060 Littelfuse
® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
LLOGAN 3/22/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
LFT30060 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/22/2011 501890ERP - RELEASE MRY
B 2/9/2012 504264ECP - UPDATE TORQUE LDL
73.7 [2.90]
4.5 [.18]
24.6 [.97]
36.8 [1.45]
8.2 [.32]
16.4 [.65]
46.9 [1.85]
30.5 [1.20]
69.1 [2.72]
52.7 [2.07]
4.5 [.18]
TYP.
41.9 [1.65]
SPECIFICATIONS:
VOLTAGE RATING: 300V
AMPERE RATING: 60 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 2.8 N-m (25 IN-LBS) 6-14 AWG
5.6 N-m (50 IN-LBS) 2-4 AWG
WIRE RANGE: 2 -14 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
36.8 [1.45]
4.5 [.18]
TYP
36.8 [1.45]
4.5 [.18]
TYP
17.8 [.70]
Dimensions mm (inches)
300 V 30 A
300 V 60 A
300 V 100 A
LF SERIES CLASS T FUSE BLOCKS
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
B OL-LFT30030 Series Littelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/22/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFT30030 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/22/2011 501890ERP - RELEASE MRY
B 2/9/2012 504264ECP - UPDATE TORQUE LDL
21.8 [.86]
71.1 [2.80]
3.7 [.15]
n4.5 [.18]
TYP.
35.6 [1.40]
6.9 [.27]
40.9 [1.61] 15.0 [.59]
25.9 [1.02] 44.9 [1.77]
59.9 [2.36] 35.6 [1.40]
SPECIFICATIONS:
VOLTAGE RATING: 300V
AMPERE RATING: 30 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 2.8 N-m (25 IN-LBS) 6-14 AWG
5.6 N-m (50 IN-LBS) 2-4 AWG
WIRE RANGE: 2 -14 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
35.6 [1.40]
n4.5 [.18]
TYP
35.6 [1.40]
n4.5 [.18]
TYP
19.7 [.78]
REVISION
REV DATE DESCRIPTION
A 7/26/2011 502931ERP - RELEASE MRY
34.8 [1.37]
133.4 [5.25]
7.9 [.31]
17.4 [.69]
66.7 [2.63]
n5.2 THRU
v n9.5 x 12.7
n.21 THRU [ ] v n.38 x .50
n6.4 THRU
v n13.2 x 11.2
n.25 THRU [ ] v n.52 x .44
104.6 [4.12]
R3.2 [.13]
TYP
n5.2 THRU
v n9.5 x 12.7
n.21 THRU [ ] v n.38 x .50
17.4 [.69] 15.9 [.63]
47.6 [1.88]
7.9 [.31]
9.5 [.38]
26.9 [1.06]
26.0 [1.03]
42.8 [1.69]
9.5 [.38]
66.7 [2.63]
123.8 [4.88]
123.8 [4.88]
78.6 [3.10]
© 2022 Littelfuse, Inc. 157 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
Dimensions mm (inches)
300 V 200 A
300 V 400 A
300 V 600 A
LF SERIES CLASS T FUSE BLOCKS
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFT30200 SerieLittelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECFINISH GOOD WT
M. York 3/22/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCINTO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF SCALE
LFT30200 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 7/26/2011 502931ERP - RELEASE MRY
38.1 [1.50]
177.8 [7.00]
19.1 [.75]
9.5 [.38]
114.3 [4.50]
R3.6 [.14]
TYP
15.9 [.63]
57.2 [2.25]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
SPECIFICATIONS:
VOLTAGE RATING: 300V
AMPERE RATING: 200 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
TERMINAL TORQUE: 31.1 N-m (275 in-lb)
WIRE RANGE: 250kcmil-6 Cu/Al
SOLID/STRANDED
FUSE TORQUE: 13.6 N-m (120 in-lb)
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
168.3 [6.63]
88.9 [3.50]
9.5 [.38]
22.2 [.88]
92.1 [3.63]
9.5 [.38]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
168.3 [6.63]
95.3 [3.75]
19.1 [.75]
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFT30400 Series Littelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/22/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFT30400 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 7/26/2011 502931ERP - RELEASE MRY
206.2 [8.12]
57.2 [2.25]
9.5 [.38]
28.6 [1.13]
171.5 [6.75]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
n7.1 THRU
v n16.0 x 12.7
n.28 THRU [ ] v n.63 x .50
15.9 [.63]
SPECIFICATIONS:
VOLTAGE RATING: 300V
AMPERE RATING: 400 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
TERMINAL TORQUE: 31.1 N-m (275 in-lb)
WIRE RANGE: 250kcmil-6 Cu/Al
SOLID/STRANDED
FUSE TORQUE: 19.2 N-m (170 in-lb)
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
12.7 [.50]
103.1 [4.06]
85.7 [3.38]
127.0 [5.00]
9.5 [.38]
103.1 [4.06]
196.7 [7.75]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
n7.1 THRU
v n16.0 x 12.7
n.28 THRU [ ] v n.63 x .50
60.6 [2.38]
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
CPK
?REVISION
REV DATE DESCRIPTION
A 7/26/2011 502931ERP - RELEASE MRY
222.3 [8.75]
69.9 [2.75]
8.8 [.35]
9.5 [.38]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
209.6 [8.25]
60.3 [2.38]
n8.4 THRU
v n19.1 x 12.7
n.33 THRU [ ] v n.75 x .50
15.9 [.63]
74.4 [2.93]
SPECIFICATIONS:
213.5 [8.41]
60.3 [2.38]
54.0 [2.13]
79.4 [3.13]
111.1 [4.38]
130.2 [5.13]
149.2 [5.88]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU
9.5 [.38] [ ] v n.50 x .50
212.7 [8.38]
300 V 200 A
300 V 400 A
300 V 600 A
Littelfuse.com 158 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
Dimensions mm (inches)
LF SERIES CLASS T FUSE BLOCKS
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
C OL-LFT60060 Littelfuse
® REVISION DRWG NO.
TITLE
D
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
LLOGAN 3/22/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
OUTLINE
SCALE
LFT60060 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/22/2011 501890ERP - RELEASE MRY
B 2/9/2012 504264ECP - UPDATE TORQUE LDL
C 8/12/20 522716ECP/D - ADD TOLERANCES MRY
39.9 .375 [1.57 0.015]
73.4 1.50 [2.89 0.0591]
3.7 [.15]
9.5 [.38]
37.3 [1.47]
76.1 .375 [3.00 0.015]
45.7 [1.80]
112.3 .375 [4.42 0.015]
81.9 [3.23]
54.0 .375 [2.13 0.015]
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 60 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 2.8 N-m (25 IN-LBS) 6-14 AWG
5.6 N-m (50 IN-LBS) 2-4 AWG
WIRE RANGE: 2 -14 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
R2.8 [.11]
TYP
37.3 [1.47]
R2.8 [.11]
TYP
37.3 [1.47]
R2.8 [.11]
TYP
21.1 [.83]
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
B OL-LFT60030C Littelfuse
® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/22/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
LFT60030C SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 3/22/2011 501890ERP - RELEASE MRY
B 2/9/2012 504264ECP - UPDATE TORQUE LDL
89.7 [3.53]
7.6 [.30]
24.6 [.97]
17.0 [.67]
R2.9 [.11]
TYP.
46.9 [1.85]
29.8 [1.17]
44.8 [1.77]
69.1 [2.72] 41.9 [1.65]
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 30 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
SUGGESTED TORQUE: 2.8 N-m (25 IN-LBS) 6-14 AWG
5.6 N-m (50 IN-LBS) 2-4 AWG
WIRE RANGE: 2 -14 AWG Cu/Al
SOLID/STRANDED
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. LR7316)
52.0 [2.05]
44.8 [1.77]
R2.9 [.11]
TYP
44.8 [1.77]
R2.9 [.11]
TYP
17.8 [.70]
4.5 [.18]
SERIES
REVISION
REV DATE DESCRIPTION
A 7/26/2011 502931ERP - RELEASE MRY
34.8 [1.37]
153.9 [6.06]
9.5 [.38]
17.5 [.69]
77.0 [3.03]
104.6 [4.12]
7.9 [.31]
15.9 [.63]
47.6 [1.88]
7.9 [.31]
26.0 [1.03]
42.8 [1.69]
77.0 [3.03]
R3.2 [.13]
TYP
n6.4 THRU
v n13.2 x 11.2
n.25 THRU [ ] v n.52 x .44
n5.2 THRU
v n9.5 x 12.7
n.21 THRU [ ] v n.38 x .50
61.8 [2.44]
78.6 [3.10]
96.8 [3.81]
9.5 [.38]
144.4 [5.69] 144.4 [5.69]
n5.2 THRU
v n9.5 x 12.7
n.21 THRU [ ] v n.38 x .50
600 V 30 A
600 V 60 A
600 V 100 A
© 2022 Littelfuse, Inc. 159 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
Dimensions mm (inches)
LF SERIES CLASS T FUSE BLOCKS
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFT60200 Series Littelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/22/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFT60200 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 7/26/2011 502931ERP - RELEASE MRY
38.1 [1.50]
196.9 [7.75]
9.5 [.38]
19.1 [.75]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
114.3 [4.50]
9.5 [.38]
98.4 [3.88]
15.9 [.63]
57.2 [2.25]
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 200 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
TERMINAL TORQUE: 31.1 N-m (275 IN-LB)
WIRE RANGE: 250kcmil-6 Cu/Al
SOLID/STRANDED
FUSE TORQUE: 13.6 N-m (120 IN-LB)
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
n7.1 THRU
v n15.9 x 12.7
n.28 THRU [ ] v n.63 x .50
19.1 [.75]
187.3 [7.38]
9.5 [.38]
187.3 [7.38]
95.3 [3.75]
104.8 [4.13]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
DES PLAINES, ILLINOIS 60016
3RD ANGLE
PROJECTION
A OL-LFT60400 Series Littelfuse® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
M. York 3/22/2011
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
SHEET 1 OF 1
SCALE
LFT60400 SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 7/26/2011 502931ERP - RELEASE MRY 57.2 [2.25]
228.6 [9.00]
9.5 [.38]
28.6 [1.13]
12.7 [.50]
114.3 [4.50]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
n7.1 THRU
v n16.0 x 12.7
n.28 THRU [ ] v n.63 x .50
171.5 [6.75]
15.9 [.63]
60.3 [2.38]
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 400 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
TERMINAL TORQUE: 31.1 N-m (275 in-lb)
WIRE RANGE: 250kcmil-6 Cu/Al
SOLID/STRANDED
FUSE TORQUE: 19.2 N-m (170 in-lb)
APPROVALS: UL LISTED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 007316_0_000)
85.7 [3.38]
127.0 [5.00]
44.5 [1.75]
219.1 [8.63]
9.5 [.38]
142.9 [5.63]
114.3 [4.50]
219.1 [8.63]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
n7.1 THRU
v n16.0 x 12.7
n.28 THRU [ ] v n.63 x .50
28.6 [1.13]
C
MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
?
CP
REVISION
REV DATE DESCRIPTION
A 7/26/2011 502931ERP - RELEASE MRY
SPECIFICATIONS:
VOLTAGE RATING: 600V
AMPERE RATING: 600 AMPERES
INTERRUPT RATING: 200kA
TERMINAL TYPE: BOX LUG
69.9 [2.75]
247.7 [9.75]
9.5 [.38] 9.5 [.38]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
209.6 [8.25]
60.3 [2.38]
123.8 [4.88]
n8.4 THRU
v n19.1 x 12.7
n.33 THRU [ ] v n.75 x .50
15.9 [.63]
74.4 [2.93]
54.0 [2.13]
79.4 [3.13]
130.2 [5.13]
60.3 [2.38]
149.2 [5.88]
238.1 [9.38]
n7.1 THRU
v n12.7 x 12.7
n.28 THRU [ ] v n.50 x .50
9.5 [.38]
238.1 [9.38]
600 V 200 A
600 V 400 A
600 V 600 A
Littelfuse.com 160 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES CLASS G FUSE BLOCKS
480 V • 600 V
Ordering Information (Class G 600 V)
AMP
RATING
POLES
ORDERING NUMBER
WIRE
TYPE
BASE
TEMP
RATING
DIN RAIL
MOUNT
TERMINAL INFORMATION
BASE
PART
NUMBER
SUFFIX
BOX TERMINAL WIRE RANGE TORQUE
LUG
PRESSURE
PLATE SCREW
15
1 LFG600151 CDINR PQDINR SQDINR
CU Only
Solid/Stranded
•
Box Lug 6-14 AWG 4.0 N-m (35 in-lbs)
2 LFG600152 CDINR PQDINR SQDINR 150˚ C Pressure Plate 10-14 AWG 2.3 N-m (20 in-lbs)
3 LFG600153 CDINR PQDINR SQDINR Screw 10-14 AWG 2.3 N-m (20 in-lbs)
20
1 LFG600201 CDINR PQDINR SQDINR
•
Box Lug 6-14 AWG 4.0 N-m (35 in-lbs)
2 LFG600202 CDINR PQDINR SQDINR 150˚ C Pressure Plate 10-14 AWG 2.3 N-m (20 in-lbs)
3 LFG600203 CDINR PQDINR SQDINR Screw 10-14 AWG 2.3 N-m (20 in-lbs)
Ordering Information (Class G 480 V)
AMP
RATING
POLES
ORDERING NUMBER
WIRE
TYPE
BASE
TEMP
RATING
DIN RAIL
MOUNT
TERMINAL INFORMATION
BASE
PART
NUMBER
SUFFIX
BOX TERMINAL WIRE RANGE TORQUE
LUG
PRESSURE
PLATE SCREW
30
1 LFG480301 CDINR PQDINR SQDINR
CU Only
Solid/Stranded
•
Box Lug 6-14 AWG 4.0 N-m (35 in-lbs)
2 LFG480302 CDINR PQDINR SQDINR 150˚ C Pressure Plate 10-14 AWG 2.3 N-m (20 in-lbs)
3 LFG480303 CDINR PQDINR SQDINR Screw 10-14 AWG 2.3 N-m (20 in-lbs)
60
1 LFG480601 CDINR — —
CU/Al • Box Lug
2-4 AWG 5.6 N-m (50 in-lbs)
2 LFG480602 CDINR — — 125˚ C
6-14 AWG 2.8 N-m (25 in-lbs)
3 LFG480603 CDINR — —
Description
All Littelfuse Class G fuse blocks offer snap-to-release
DIN rail mounting and universal mounting holes. Class
G fuse blocks are designed for use with time-delay
current limiting Class G fuses.
Features/Benefits
• Universal mounting holes for easy replacement
• One hand release from DIN rail for most amperages
• Meet requirements for branch circuit protection
Specifications
Voltage Ratings 600 VAC (0–20 A)
480 VAC (25–60 A)
Ampere Ratings 0–60 A
Flammability Rating UL94 V-0
Approvals UL Listed (File: E14721)
CSA Certified (File: LR7316)
Recommended Fuses
Time Delay
Series: SLC........................................................................ 26
Web Resources
For additional technical information visit:
littelfuse.com/lfg
littelfuse.com/fuseblocks
© 2022 Littelfuse, Inc. 161 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES CLASS G FUSE BLOCKS
76.2 (3.00)
38.1 (1.50)
19.1 (0.75)
8.5 (0.34) 5.3 (0.21)
4.1 (0.16)
R2.2 (0.09)
TYP.
9.3 (0.37)
16.4 (0.65)
21.7 (0.85)
38.1 (1.50)
R2.7 (0.11)
TYP.
R2.6 (0.10)
TYP.
6.5 (0.26)
15.4 (0.61)
25.5 (1.01)
34.4 (1.36)
59.9 (2.36)
35.6 (1.40)
R2.3 (0.09)
TYP.
21.8 (0.86)
95.3 (3.75)
55.1 (2.17)
8.3 (0.33) 6.8 (0.27)
R2.3 (0.09)
TYP.
3.7 (0.15)
6.8 (0.27)
15.1 (0.59)
25.8 (1.02)
40.9 (1.61)
6.8 (0.27)
15.1 (0.59)
25.8 (1.02)
44.9 (1.77)
59.9 (2.36)
35.6 (1.40)
600 V 15 & 20 A
480 V 30 A
480 V 60 A
Dimensions mm (inches)
Littelfuse.com 162 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES CLASS CC/CD AND MIDGET (10x38 mm) FUSE BLOCKS
600 V
Ordering Information (L600CM Class CC and Midget Combination 30 A) AMP RATING
POLES COMBINATION 2 CLASS CC / 1 MIDGET
ORDERING NUMBER CONNECTOR
TYPE TORQUE WIRE
RANGE WIRE TYPE BASE
TEMP
COVER
ORDERING
NUMBER† CLASS CC MIDGET NON-DIN DINR
30 2 1 L60030CM3PQ — Pressure Plate
w/Q.C. Terminal
2.3 N-m
(20 in-lbs) 10–14 AWG CU Only
Solid / Stranded 125 ˚C SPL001
* Gangable – † Covers sold individually. One cover needed for each pole.
Description
The Littelfuse Class CC, CD and midget blocks offer
generous space savings and enhanced value. DIN-rail
mounting and universal mounting holes are available as
well as an indication feature on all Class CD fuse blocks.
Features/Benefits
• Space-saving design
• Universal mounting holes for easy replacement
• Indication offered on CD blocks
• One hand release from DIN rail optional
• Rejection feature that prevents the insertion of fuses
with lower interrupting rating or voltage ratings
• Clip design reduces resistance and heat
• Non DIN-rail fuse blocks have interlocking feature
allowing ganging for any number of poles
• Covers available for all amperages to enhance safety
• Both hex and slot set screw options available on LFC
Class CD 60 A box lugs
Specifications
Voltage Rating 600 V ac/dc
Ampere Ratings L600M Midget (10x38): 30 A
L600C Class CC: 30 A
LFC Class CD: 60 A
L600CM Class CC & Midget: 30 A
Dielectric strength 1200 V minimum
Materials Clip/terminals: Tin-plated copper alloy
Box lug: Copper
Screw & captive pressure plate: Zinc-plated steel
Base: Thermoplastic
UL94 V-0 flammability rating
Withstand Rating L60030C: 200 kA
(SCCR) L60030M: 10 kA, 20 kA or 100 kA based on the
Midget fuse used
LFC600: 200 kA
Approvals L600M: UL Recognized (File: E14721)
CSA Certified (File: LR7316)
L600C: UL Listed (File: E14721)
CSA Certified (File: LR7316)
LFC: UL Listed (File: E14721)
CSA Certified (File: LR7316)
L600CM: UL Recognized (File: E14721)
CSA Certified (File: LR7316)
Environmental RoHS Compliant, Lead (Pb) Free
Recommended Fuses
Class CC Blocks: CCMR, KLDR, KLKR
Class CM Block: Fuses same as CC & Midget Blocks
Class CD Blocks: CCMR
Midget Blocks: BLF, BLN, BLS, FLA, FLM, FLQ,
FLU, KLK, KLKD, KLQ
Web Resources
Sample requests and technical downloads:
Littelfuse.com/fuseblocks
Ordering Information (L600C Class CC and L600M Midget 30 A) AMP RATING POLES
CLASS CC ORDERING NUMBER MIDGET ORDERING NUMBER CONNECTOR
TYPE TORQUE WIRE
RANGE WIRE TYPE BASE
TEMP
COVER
ORDERING
NUMBER NON-DIN* DINR NON-DIN* DINR †
30
1 L60030C1C L60030C1CDINR L60030M1C L60030M1CDINR
Box Lug 4.0 N-m
(35 in-lbs) 6–14 AWG
CU Only
Solid / Stranded
2 L60030C2C L60030C2CDINR L60030M2C L60030M2CDINR 125 ˚C SPL001
3 L60030C3C L60030C3CDINR L60030M3C L60030M3CDINR
30
1 L60030C1PQ L60030C1PQDINR L60030M1PQ L60030M1PQDINR
Pressure Plate
w/Q.C. Terminal
2.3 N-m
(20 in-lbs) 2 L60030C2PQ L60030C2PQDINR L60030M2PQ L60030M2PQDINR 10–14 AWG 125 ˚C SPL001
3 L60030C3PQ L60030C3PQDINR L60030M3PQ L60030M3PQDINR
30
1 L60030C1SQ L60030C1SQDINR L60030M1SQ L60030M1SQDINR Screw
w/Q.C. Terminal
2.3 N-m
(20 in-lbs) 2 L60030C2SQ L60030C2SQDINR L60030M2SQ L60030M2SQDINR 10–14 AWG 125 ˚C SPL001
3 L60030C3SQ L60030C3SQDINR L60030M3SQ L60030M3SQDINR
© 2022 Littelfuse, Inc. 163 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
Dimensions mm (inches)
LF SERIES CLASS CC/CD AND MIDGET (10x38 mm) FUSE BLOCKS
35.56
[1.400]
84.97
[3.345]
76.20
[3.000]
19.05
[0.750] 35.56
[1.400]
84.97
[3.345]
76.20
[3.000]
38.10
[1.500] 59.94 [2.360]
76.20 [3.000]
35.56 [1.400]
84.56 [3.329]
(2) PLACES
UNLATCHED
REVISION
REV DATE DESCRIPTION
A 4/6/2011 501967ERP - RELEASE MRY
B 1/23/18 518779ECP/D - ADD WIDTH, LENGTH AND HEIGHT TOLERANCES MRY
C 2/27/19 520462ECP/D - UPDATE WIDTH, LENGTH & HEIGHT DIMS & TOLERANCE MRY
D 3/5/19 520513ECP/D - UPDATE HEIGHT TOLERANCE MRY
E 3/7/19 520532ECP/D - UPDATE LENGTH TOLERANCE MRY
F 3/7/19 520534ECP/D - UPDATE HEIGHT TOLERANCE MRY
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
24.3 [.96]
18.7 [.74]
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
24.3 [.96]
33.2 [1.31]
43.1 [1.70]
51.9 [2.05]
10.0 [.40] 37.5 [1.48]
19.63
[.773]
76.20
[3.000]
38.37 [1.511]
33.2 [1.31]
57.11 [2.248]
31.75 [1.250]
Ordering Information (LFC Class CD 60 A)
AMP
RATING POLES
INDICATING
ORDERING
NUMBER
NON-INDICATING
ORDERING
NUMBER
CONNECTOR
TYPE TORQUE WIRE RANGE WIRE TYPE
BASE
TEMP
RATING
DIN RAIL
MOUNT
COVER
ORDERING
NUMBER†
60
1 LFC600601CID LFC600601C
Box Lug with
Slot Screw
5.6 N-m (50 in-lbs) 2–4 AWG
CU-AL Solid /
Stranded 125 ˚C • LFC60060FBC
2 LFC600602CID LFC600602C
2.8 N-m (25 in-lbs) 6–14 AWG 3 LFC600603CID LFC600603C
60
1 LFC600601CID-HX LFC600601C-HX
Box Lug with
Hex Screw
5.6 N-m (50 in-lbs) 2–4 AWG
2 LFC600602CID-HX LFC600602C-HX
2.8 N-m (25 in-lbs) 6–14 AWG 3 LFC600603CID-HX LFC600603C-HX
† Covers sold individually. One cover needed for each pole.
REVISION
REV DATE DESCRIPTION
A 4/6/2011 501967ERP - RELEASE MRY
B 1/23/18 518779ECP/D - ADD WIDTH, LENGTH AND HEIGHT TOLERANCES MRY
C 2/27/19 520462ECP/D - UPDATE WIDTH, LENGTH & HEIGHT DIMS & TOLERANCE MRY
D 3/5/19 520513ECP/D - UPDATE HEIGHT TOLERANCE MRY
E 3/7/19 520532ECP/D - UPDATE LENGTH TOLERANCE MRY
F 3/7/19 520534ECP/D - UPDATE HEIGHT TOLERANCE MRY
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
24.3 [.96]
18.7 [.74]
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
24.3 [.96]
33.2 [1.31]
43.1 [1.70]
51.9 [2.05]
10.0 [.40] 37.5 [1.48]
19.63
[.773]
76.20
[3.000]
38.37 [1.511]
33.2 [1.31]
57.11 [2.248]
31.75 [1.250]
L600M Midget, L600C Class CC and L600CM Combination 30 A
L600M-DINR Midget and L600C-DINR Class CC 30 A
REVISION
REV DATE DESCRIPTION
A 4/6/2011 501967ERP - RELEASE MRY
B 1/23/18 518779ECP/D - ADD WIDTH, LENGTH AND HEIGHT TOLERANCES MRY
C 2/27/19 520462ECP/D - UPDATE WIDTH, LENGTH & HEIGHT DIMS & TOLERANCE MRY
D 3/5/19 520513ECP/D - UPDATE HEIGHT TOLERANCE MRY
E 3/7/19 520532ECP/D - UPDATE LENGTH TOLERANCE MRY
F 3/7/19 520534ECP/D - UPDATE HEIGHT TOLERANCE MRY
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
24.3 [.96]
18.7 [.74]
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
24.3 [.96]
33.2 [1.31]
43.1 [1.70]
51.9 [2.05]
10.0 [.40] 37.5 [1.48]
19.63
[.773]
76.20
[3.000]
38.37 [1.511]
33.2 [1.31]
57.11 [2.248]
31.75 [1.250]
REVISION
REV DATE DESCRIPTION
A 4/6/2011 501967ERP - RELEASE MRY
B 1/23/18 518779ECP/D - ADD WIDTH, LENGTH AND HEIGHT TOLERANCES MRY
C 2/27/19 520462ECP/D - UPDATE WIDTH, LENGTH & HEIGHT DIMS & TOLERANCE MRY
D 3/5/19 520513ECP/D - UPDATE HEIGHT TOLERANCE MRY
E 3/7/19 520532ECP/D - UPDATE LENGTH TOLERANCE MRY
F 3/7/19 520534ECP/D - UPDATE HEIGHT TOLERANCE MRY
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
24.3 [.96]
18.7 [.74]
38.1 [1.50]
R2.2 [.09]
TYP
5.6 [.22]
14.5 [.57]
24.3 [.96]
33.2 [1.31]
43.1 [1.70]
51.9 [2.05]
10.0 [.40] 37.5 [1.48]
19.63
[.773]
76.20
[3.000]
38.37 [1.511]
33.2 [1.31]
57.11 [2.248]
31.75 [1.250]
Littelfuse.com 164 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
Dimensions mm (inches)
LF SERIES CLASS CC/CD AND MIDGET (10x38 mm) FUSE BLOCKS
49.5 [1.95]
3.6 [0.14]
9.8 [0.39]
21.9 [0.86]
36.5 [1.44]
9.8 [0.39]
21.9 [0.86]
36.5 [1.44]
48.6 [1.91]
49.5 [1.95]
48.6 [1.91]
49.5 [1.95]
63.2 [2.49]
75.2 [2.96]
9.8 [0.39]
24.1 [0.95]
21.9 [0.86]
R2.2 [0.09]
TYP
R2.2 [0.09]
TYP
R2.2 [0.09]
TYP
82.6 [3.25]
49.5 [1.95]
LFC Class CD 60 A
49.5 [1.95]
3.6 [0.14]
9.8 [0.39]
21.9 [0.86]
36.5 [1.44]
9.8 [0.39]
21.9 [0.86]
36.5 [1.44]
48.6 [1.91]
49.5 [1.95]
48.6 [1.91]
49.5 [1.95]
63.2 [2.49]
75.2 [2.96]
9.8 [0.39]
24.1 [0.95]
21.9 [0.86]
R2.2 [0.09]
TYP
R2.2 [0.09]
TYP
R2.2 [0.09]
TYP
82.6 [3.25]
49.5 [1.95] 49.5 [1.95]
3.6 [0.14]
9.8 [0.39]
21.9 [0.86]
36.5 [1.44]
9.8 [0.39]
21.9 [0.86]
36.5 [1.44]
48.6 [1.91]
49.5 [1.95]
48.6 [1.91]
49.5 [1.95]
63.2 [2.49]
75.2 [2.96]
9.8 [0.39]
24.1 [0.95]
21.9 [0.86]
R2.2 [0.09]
TYP
R2.2 [0.09]
TYP
R2.2 [0.09]
TYP
82.6 [3.25]
49 49.5 [1.95] .5 [1.95]
3.6 [0.14]
9.8 [0.39]
21.9 [0.86]
36.5 [1.44]
9.8 [0.39]
21.9 [0.86]
36.5 [1.44]
48.6 [1.91]
49.5 [1.95]
48.6 [1.91]
49.5 [1.95]
63.2 [2.49]
75.2 [2.96]
9.8 [0.39]
24.1 [0.95]
21.9 [0.86]
R2.2 [0.09]
TYP
R2.2 [0.09]
TYP
R2.2 [0.09]
TYP
82.6 [3.25]
49.5 [1.95]
© 2022 Littelfuse, Inc. 165 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
Description
The PC board-mounted midget fuse holder is a one-piece
holder designed to provide a more robust and secure
solution. It offers a smaller footprint and flexible
mounting options.
For use with Midget-style fuses and fuse covers, it is
UL Recognized and can be covered for additional protection.
Features/Benefits
• Through hole PCB mounting
• Robust and secure block design
• All-in-one package offers easy installation
• Space saving footprint
• Touch Safe cover/puller available
• 3-pole configurations
Applications
• HVAC market
• Industrial manufacturing
• Mass production facilities
Specifications
Voltage Rating 600 V ac/dc
Amperage Rating 30 A
Approval UL Recognized (File: E14721)
Mounting Method Through hole solder/PCB
Ordering Information
CATALOG NUMBER ORDERING NUMBER
Block L60030M3PCB L60030M3PCB
Cover* SPL001PCB SPL0001PCBT
*Covers are single pole—need to order a quantity of 3 for each block.
Recommended Fuses
Midget (10 x 38 mm) series...............................................30
Web Resources
For additional technical information visit:
Littelfuse.com/fuseblocks
Dimensions mm (inches)
BOARD MOUNT MIDGET (10X38 mm) FUSE HOLDER
600 V
1.47 (.058)
(18 PLACES) 2.54 (.100) 2.54 (.100)
41.61
(1.638)
29.57
(1.164)
22.86 (.900)
6.02 (.237)
SPL001PCB Cover
29.57 [1.164]
1.47 [.058]
(18 PLACES) 2.54 [.100]
41.61 [1 .638]
22.86 [.900]
6.02 [.237]
2.54 [.100]
46.99 (1.850)
3
600 V 30 A
100,000 A RMS SYM.
L60030M3PCB
3.15 (1.305) 36.97 (1.455)
Dimensions mm (inches)
Littelfuse.com 166 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
CLASS CC AND MIDGET FUSE BLOCK ACCESSORIES
FBDIN1 Rail Adapter
Features/Benefits
• DIN Rail adaptor for 30 A Midget, Class CC and Class G
fuse blocks
• Patented design with no tools necessary for installation
• Permits snap-mounting of 30 A Midget, Class CC and
Class G fuse blocks to standard and low profile 35 mm
symmetrical DIN rails and 32 mm asymmetrical DIN rails
• Easy removal via disconnect tab
Web Resources
For additional technical information visit:
littelfuse.com/fbdin1
Dimensions Inches
Recommended Fuse Blocks
Midget-Style and Class CC
Class G
New DIN-rail mountable fuse holders available.
1.22"
0.665"
3.0"
Features/Benefits
• 600 V 1
⁄10-30 A Class CC and Midget fuse cover puller
that offers increased protection when removing fuses
• Simple removal without the need for a separate puller
• Meets Dead-Front requirements
• Easily gangable with 1⁄ 8" diameter wire
• For use with all 600 V Class CC and Midget 1
⁄10-30 A fuses
• Label provided for easy fuse identification
Recommended Fuse Blocks
L60030C
L60030M
Web Resources
For additional technical information visit:
littelfuse.com/spl001
SPL001 Cover Puller Dimensions Inches
© 2022 Littelfuse, Inc. 167 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES FUSE BLOCK COVERS
Description
Littelfuse fuse block covers protect personnel from
accidentally coming into contact with energized parts.
Covers are for use with Littelfuse UL class fuse blocks.
Review the ordering information or contact the factory for
available covers.
Ordering Information
Specifications
Connection Snap to fuse body
Molded Base Black thermoplastic
Flammability Rating UL94 V-0
Approvals UL Listed (File: E184929)
CSA Certified
(File: 007316_0_000 Class 6225-01)
Features/Benefits
• Added safety to personnel
• Ventilated to avoid fuse derating
• Reusable
• UL listed and CSA certified
• Available for Class H/R, Class J, Class T and Class CD
• Convenient snap-on feature
• Allows visibility of indicator fuse block light
Web Resources
Downloadable CAD drawings, dimensions and other
technical information, visit
Littelfuse.com/fuseblocks
UL CLASS FUSE BLOCK BASE
PART NUMBER* VOLTAGE AMPERAGE COVER ORDERING NUMBER
Class H/R LFH25030 / LFR25030 250 30 LFH25030FBC
Class H/R LFH25060 / LFR25030 250 60 LFH25060FBC
Class H/R LFH25100 / LFR25100 250 100 LFH25100FBC
Class H/R LFH60030 / LFR60030 600 30 LFH60030FBC
Class H/R LFH60060 / LFR60060 600 60 LFH60060FBC
Class H/R LFH60100 / LFR60100 600 100 LFH60100FBC
Class J LFJ60030 600 30 LFJ60030FBC
Class J LFJ60060 600 60 LFJ60060FBC
Class J LFJ60100 600 100 LFJ60100FBC†
Class T LFT30030 300 30 LFT30030FBC
Class T LFT30060 300 60 LFT30060FBC
Class T LFT30100 300 100 LFT30100FBC
Class T LFT60030 600 30 LFT60030FBC
Class T LFT60060 600 60 LFT60060FBC
Class T LFT60100 600 100 LT60100FBC
Class T LFT60200 600 200 LT60200FBC
Class T LFT60400 600 400 LT60400FBC
Class T LFT60600 600 600 LT60600FBC
Class CD LFC60060 600 60 LFC60060FBC
Class CC L60030C 600 30 SPL001
* Part number shown excludes reference to number of poles and terminal type
† Cover is not compatible with 70-100 A JLS series fuses
Littelfuse.com 168 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES FUSE BLOCK COVERS
Dimensions in mm (inches)
Class H/R
Also available at Littelfuse.com/fuseblocks
96.52
(3.800)
22.61
(0.890)
250 V 30 A
250 V 100 A 185.45
(7.301)
38.86
(1.530)
250 V 60 A 138.43
(5.450)
32.64
(1.285)
600 V 30 A 177.16
(6.975)
26.37
(1.038)
600 V 60 A 193.72
(7.627)
35.46
(1.396)
600 V 100 A
240.28
(9.460)
43.18
(1.700)
© 2022 Littelfuse, Inc. 169 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES FUSE BLOCK COVERS
120.35
(4.758)
35.29
(1.389)
600 V 60 A
600 V 30 A
104.75
(4.124)
24.89
(0.980)
600 V 100 A
154.23
(6.072)
37.74
(1.486)
Dimensions in mm (inches)
Class J
Also available at Littelfuse.com/fuseblocks
300 V 30 A
300 V 100 A
85.33
(3.360)
18.03
(0.710)
116.84
(4.600)
32.74
(1.289)
300 V 60 A 88.98
(3.503)
15.65
(0.616)
Dimensions in mm (inches)
Class T
Littelfuse.com 170 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LF SERIES FUSE BLOCK COVERS
600 V 30 A
104.65
(4.120)
20.11
(0.819)
600 V 60 A 93.47
(3.680)
34.29
(1.350)
600 V 100 A 117.35
(4.620)
25.68
(1.011)
Dimensions in mm (inches)
Class T
Also available at Littelfuse.com/fuseblocks
157.48
(6.200)
30.42
(1.198)
600 V 200 A
600 V 400 A 220.98
(8.700)
53.26
(2.097)
600 V 600 A 154.23
(6.072)
37.74
(1.486)
116.76
(4.597)
24.87
(0.979)
600 V 60 A
Dimensions in mm (inches)
Class CD
© 2022 Littelfuse, Inc. 171 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
LPXV TOUCH-SAFE FUSE HOLDERS
1500 V • 30 A
Specifications
Voltage Ratings 1500 Vdc
Amperage Rating 30 A
SCCR Rating 15 kA
Fuse Type 10x85mm
Material Thermoplastic
Operating Temperature -40°C to +125°C
Flammability Rating UL94 V-0
Temperature Stability Body: 125˚ C
Carrier: 140˚ C
Approvals UL 4248-18 Listed (File: E345481)
IEC 60269-1 & IEC 60269-2
Environmental RoHS compliant, Lead (Pb) free
Ordering Information
Description
The Littelfuse LPXV fuse holder is designed to hold
1500 V 10x85mm fuses.
Features/Benefits
• Finger-Safe design offers personnel protection
• No fuse pullers or tools required for fuse removal
• 35 mm DIN Rail Mountable
• Compact design
Recommended Fuses
Littelfuse SPXV 1500 V Fuses............................................ 58
Web Resources
Download the complete datasheet and other technical
documents: Littelfuse.com/lpxv
SERIES VOLTAGE
(Vdc) POLES CATALOG
NUMBER
ORDERING
NUMBER
PACK
QTY
TERMINAL INFORMATION
TERMINAL
TYPE WIRE TYPE NUMBER
OF WIRES WIRE SIZE TORQUE
LPXV 1500 1 LPXV001 LPXV0001Z 5 Box Lug
90˚ Max
CU Only
Stranded
1 6-4 AWG
(16-25 mm2
)
22-26 lb-in
(2.5-3 N-m)
1 18-8 AWG
(.75-10 mm2
)
18-22 lb-in
(2-2.5 N-m)
2* 18-6 AWG
(.75-16 mm2
)
18-22 lb-in
(2-2.5 N-m)
*Must be the same cross-sectioned size
5.1
(130.0)
.88
(22.3)
2.54
(64.5)
4.11
(104.5)
2.28
(58.0)
1.89
(48.0)
1.57
(40.0)
Look for this logo to indicate products that are used in solar applications. Visit our website
littelfuse.com/solar for the latest updates on approvals, certifications, and new products.
Dimensions Inches (mm)
6
Littelfuse.com 172 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LFXV15 SERIES SOLAR FUSE BLOCK & COVER
1500 V • 35–60 A
*For replacement only: Fuse Block LFXV150601C or Cover LFXV15060FBC
REACH
Description
The Littelfuse LFXV15 series fuse block and cover is
designed to hold 1500 V size 20 x 127 mm fuses rated
35–60 amperes. Suitable for photovoltaic systems (string
and high-capacity combiner boxes) with fault currents up to
50 kA.
With available ampere ratings up to 60 A, more strings can
be pre-combined in harnesses to reduce the number of
inputs into combiner boxes, thereby decreasing installation
time and labor costs.
Features/Benefits
Dead-front cover design offers personnel protection
Ventilated design keeps the fuse running cooler, even at
high ambient temperatures and current ratings, to increase
fuse longevity
Narrower width accommodates more blocks in a panel to
maximize space
Designed for easy fuse removal and replacement to
minimize maintenance time. No tools required
35 mm DIN-rail mounting option for quick assembly and
installation Accepts both wire and busbar for added flexibility
Positive lock feature secures the fuse puller in the block
when the fuse is absent
Recommended Fuses
Littelfuse SPXV 20 x 127 mm fuses rated 35–60 amperes.
Specifications
Voltage Ratings 1500 V dc
Amperage Rating 60 A
Withstand Rating 50 kA
Power Acceptance 24.1W Maximum
Fuse Size 20 x 127 mm
Material Thermoplastic
Fuse Clip: Tin-plated copper alloy
Screws: Tin-plated aluminum
Operating Temperature -55 ˚C to +125 ˚C
Flammability Rating UL94 V-0
Temperature Stability Base: 130 ˚C
Cover: 140 ˚C
Approvals Block: UL 4248-19 Listed
(File E345481)
Cover: UL Listed Fuse Accessory
(File E184929)
Environmental RoHS compliant, Lead (Pb) free, REACH
Recommended DIN Rail TH 35-7,5 per IEC 60715
WIRE TYPE
75 ˚C or 90 ˚C
CU Only
Stranded
UL Class B and Class C wire
IEC Class 5 Flexible Wire (self-certified)
BUSBAR SPECIFICATIONS
TERMINAL THICKNESS WIDTH TORQUE
Maximum 0.250 in
(6.35 mm)
0.290 in
(7.37 mm)
25 lb-in
(2.8 N-m)
Minimum 0.125 in
(3.18 mm)
0.200 in
(5.08 mm)
25 lb-in
(2.8 N-m)
VOLTAGE
(V dc)
AMPERE
RATING POLES FUSE BLOCK & COVER
ORDERING NUMBER
CONNECTOR
TYPE DRIVE TORQUE WIRE RANGE WIRE TYPE
1500 60 1 LFXV15060-BC* Box Lug 3/16
Inch Hex
5.6 N-m (50 lb-in) 2–4 AWG
CU only Stranded (35–25 mm2
)
2.8 N-m (25 lb-in) 6–14 AWG
(16–2.5 mm2
)
Ordering Information
*For replacement only: Fuse Block LFXV150601C or Cover LFXV15060FBC
Web Resources
Download the complete datasheet and other technical
documents: Littelfuse.com/LFXV15
© 2022 Littelfuse, Inc. 173 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
LFXV15 SERIES SOLAR FUSE BLOCK & COVER
LFXV15 Features & Benefits
Narrow width of holder
accommodates more blocks
in a panel to maximize space
(34.79 mm; 1.37 in)
Fuse puller hooks
facilitate easy removal
Thermoplastic barriers for
additional safety
SPXV Solar Fuse
(not included)
#10 panel mounting holes available
for installation flexibility
35 mm DIN-rail clip mounting option
for quick assembly and installation
Positive lock feature secures the fuse puller
in the block when the fuse is absent
Accepts both wire and busbar
for added flexibility
Handle designed for easy fuse removal
and replacement to minimize
maintenance time. No tools required.
Dead-front cover design
offers personnel protection
Ventilated design keeps fuse
running cooler, even at high
ambient temperatures and current
ratings, to increase fuse longevity
6
Littelfuse.com 174 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LFXV15 SERIES SOLAR FUSE BLOCK & COVER
Dimensions Millimeters (in)
Fuse Block: LFXV150601C
Fuse Cover: LFXV15060FBC
Fuse Block & Cover Assembly: LFXV15060-BC
Look for this logo to indicate products that are used in solar applications. Visit our website
Littelfuse.com/Solar for the latest updates on approvals, certifications, and new products.
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
B Littelfuse
® REVITITLE
DRW DATE
myork 9/24/2021
MATL SPEC UNLESS OTHERWISE SPECIFIED, DIMENSIONBRACKETS [ ] ARE INCHES DIMENSIONING ANTO BE INTERPRETED IN ACCORDDENOTES CRITICAL CHARACDENOTES CPK DIMENSIONS, DENOTES A CHARACTERISTIOF PROCESS PERFORMANCEAND TRACKING TO BE DEFINLITTELFUSE INSPECTION INSDENOTES CP DIMENSIONS, -MUST BE WITHIN THE DIMENSHOWN ON DRAWING AND IALLOW FOR MAXIMUM TOOL CPK
CP
LFXV15060-B CRITICAL CHARACTERISTIC REVISIOREV DATE A 9/24/21 52423B 11/9/21 524457ECP/D - UPDA77.70
[3.059]
FUSE BLOCK & COVER ASSEMBLY: LFXV15060-BC
34.79
[1.370]
181.22
[7.135]
176.05
[6.931]
27.41
[1.079]
49.70
[1.957] 53.27
[2.097]
204.98
[8.070]
FUSE BLOCK COVER: LFXV15060FBC
181.22
[7.135]
176.05
[6.931]
34.79
[1.370]
50.67
[1.995]
FUSE BLOCK: LFXV150601C (x2) #10 MOUNTING HOLE
56.11
[2.209]
31.75
[1.250] 17.39
[0.685]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
B Littelfuse
® REVISIONTITLE
DRW DATE
myork 9/24/2021
MATL SPEC FINISUNLESS OTHERWISE SPECIFIED, DIMENSIONS ABRACKETS [ ] ARE INCHES DIMENSIONING AND DO TO BE INTERPRETED IN ACCORDANCDENOTES CRITICAL CHARACTERIDENOTES CPK DIMENSIONS, -MIDENOTES A CHARACTERISTIC THOF PROCESS PERFORMANCE. PROAND TRACKING TO BE DEFINED LITTELFUSE INSPECTION INSTRUDENOTES CP DIMENSIONS, -MINMUST BE WITHIN THE DIMENSIOSHOWN ON DRAWING AND INITIALLOW FOR MAXIMUM TOOL LIFCPK
CP
SCALLFXV15060-BC ONTS
CRITICAL CHARACTERISTIC FOR REVISION
REV DATE DESA 9/24/21 524234GCPB 11/9/21 524457ECP/D - UPDATE L77.70
[3.059]
FUSE BLOCK & COVER ASSEMBLY: LFXV15060-BC
34.79
[1.370]
181.22
[7.135]
176.05
[6.931]
27.41
[1.079]
49.70
[1.957] 53.27
[2.097]
204.98
[8.070]
FUSE BLOCK COVER: LFXV15060FBC
181.22
[7.135]
176.05
[6.931]
34.79
[1.370]
50.67
[1.995]
FUSE BLOCK: LFXV150601C (x2) #10 MOUNTING HOLE
56.11
[2.209]
31.75
[1.250] 17.39
[0.685]
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
B OL-LFLittelfuse
® REVISION DRWG NOTITLE
DRW DATE
myork 9/24/2021
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMBRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUTO BE INTERPRETED IN ACCORDANCE WITH ANSI DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VDENOTES A CHARACTERISTIC THAT PROVIDEOF PROCESS PERFORMANCE. PROCEDURE FORAND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALMUST BE WITHIN THE DIMENSIONAL LIMITATSHOWN ON DRAWING AND INITIALLY LOCATEALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
LFXV15060-BC OUTLINE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETYREVISION
REV DATE DESCRIPTION
A 9/24/21 524234GCP - RELEASE MB 11/9/21 524457ECP/D - UPDATE LFXV150601C D77.70
[3.059]
FUSE BLOCK & COVER ASSEMBLY: LFXV15060-BC
34.79
[1.370]
181.22
[7.135]
176.05
[6.931]
27.41
[1.079]
49.70
[1.957] 53.27
[2.097]
204.98
[8.070]
FUSE BLOCK COVER: LFXV15060FBC
181.22
[7.135]
176.05
[6.931]
34.79
[1.370]
50.67
[1.995]
FUSE BLOCK: LFXV150601C (x2) #10 MOUNTING HOLE
56.11
[2.209]
31.75
[1.250] 17.39
[0.685]
© 2022 Littelfuse, Inc. 175 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
LFPXV TOUCH-SAFE FUSE HOLDERS
1500 V • 30 A
Specifications
Voltage Ratings 1500 V dc
Amperage Rating 32 A
SCCR Rating 50 kA
Power Dissipation: 8W Maximum
Fuse Type 10x85 mm
Material Thermoplastic
Fuse Clip: Silver plated copper alloy
Screws: Zinc plated steel
Operating Temperature -55 ˚C to +125 ˚C
Flammability Rating UL94 V-0
Temperature Stability Body: 130 ˚C
Carrier: 140 ˚C
Approvals UL 4248-19 Listed (File: E345481)
IEC 60269-6
Environmental RoHS compliant, Lead (Pb) free, REACH
Recommended DIN Rail TH 35-7,5 per IEC 60715
Ordering Information
Description
The Littelfuse LFPXV fuse holder is designed to hold
1500 V 10x85 mm fuses.
Features/Benefits
• Finger-Safe design offers personnel protection
• No fuse pullers or tools required for fuse removal
• 35 mm DIN Rail Mountable
• Evaluated for use with copper alloy busbars
• Compact design
Recommended Fuses
Littelfuse SPXV/SPXV-S Fuses
Web Resources
Download the complete datasheet and other technical
documents: Littelfuse.com/LFPXV
SERIES VOLTAGE
(Vdc) POLES CATALOG
NUMBER
ORDERING
NUMBER
PACK
QTY
TERMINAL INFORMATION
TERMINAL
TYPE
NUMBER
OF WIRES WIRE SIZE TORQUE
LFPXV 1500 1 LFPXV001 LFPXV0001Z 20 Box Lug
1 4-14 AWG
(25-2.5 mm2
)
24-28 lb-in
(2.71-3.16 N-m)
1 16-18 AWG
(1.5-0.75 mm2
)
18-22 lb-in
(2.03-2.49 N-m)
2* 6-14 AWG
(16-2.5 mm2
)
26-30 lb-in
(2.94-3.69 N-m)
2* 16-18 AWG
(1.5-0.75 mm2
)
20-24 lb-in
(2.26-2.71 N-m)
*Must be the same wire type and cross sectioned size
Look for this logo to indicate products that are used in solar applications. Visit our website
littelfuse.com/solar for the latest updates on approvals, certifications, and new products.
WIRE TYPE
75 ˚C or 90 ˚C
CU Only
Stranded
UL Class B and Class C wire
AlphaWire PV series Photovoltaic Wire
IEC Class 5 Flexible Wire
BUSBAR SPECIFICATIONS
TERMINAL THICKNESS WIDTH TORQUE
Maximum 0.188 in
(4.78 mm)
0.290 in
(7.37 mm) 24-28 lb-in
(2.71-3.16 N-m)
Minimum 0.125 in
(3.18 mm)
0.200 in
(5.08 mm)
6
Littelfuse.com 176 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
Specifications
Voltage Ratings 1000 Vdc
Ampere Ratings 200, 400, 450 A
Flammability Rating UL94 V-0
Termination Type Box Lug or Stud Mount
Base Temp Rating 130˚ C
Approvals UL 4248-18 Listed
File: E345481 Vol. 1
Environmental RoHS Compliant
Recommended Fuses
SPFJ Solar Series.............................................................. 63
Web Resources
Download CAD drawings, dimensions and other technical
information: littelfuse.com/LFJ1000
Clip-to-Box Stud-to-Stud Clip-to-Stud
Description
The LFJ1000 series fuse block is specifically designed
for the Littelfuse SPFJ 1000 V Solar Fuse. It meets UL
electrical requirements, is available in multiple amperages,
and comes in a variety of fuse mounting and termination
configurations; fuse clip to box lug, fuse stud to wire stud
and fuse clip to wire stud.
Features/Benefits
• Narrow width increases space savings
• Range of amperages to match all SPFJ fuse options
• Box Lug termination style accommodates a wide
range of cable sizes
• Stud-mounted option increases convenience
• Approval for use with copper or aluminum lugs
allowing for design flexibility
Ordering Information
(Clip-to-Box Lug 1000 V)
AMPERAGE ORDERING
NUMBER
INTERRUPT
RATING
WIRE RANGE
STANDARD (METRIC) WIRE TYPE RECOMMENDED
TORQUE
200 LFJ102001C 20 kA 250 kcmil - #6 (127mm2
- 16mm2
)
Cu/Al Solid/
Stranded
275 in-lb (31.1 N-m)
400 LFJ104001C 10 kA 350 kcmil - 1/0 (177mm2
- 55mm2
) 275 in-lb (31.1 N-m)
450 LFJ104501C 20 kA 500 kcmil - #4 (253mm2 - 25mm2
) 375 in-lb (42.4 N-m)
LFJ1000 SERIES SOLAR FUSE BLOCKS
1000 Vdc • Clip-to-Box • Stud-to-Stud • Clip-to-Stud
(Stud-to-Stud 1000 V)
AMPERAGE ORDERING
NUMBER
INTERRUPT
RATING
RECOMMENDED TORQUE MAX. BUSBAR
THICKNESS
RECOMMENDED BASE TORQUE
FUSE TERMINAL BOLT SIZE TORQUE
200 LFJ102001STST 20 kA 65 in-lb (7.3 N-m) 200 in-lb (22.6 N-m) .774” (19.66 mm)
1/4”
5/16”
30-40 in-lb
40-50 in-lb 400 LFJ104001STST 10 kA 170 in-lb (19.2 N-m) 200 in-lb (22.6 N-m) .555” (14.10 mm)
450 LFJ104501STST 20 kA 300 in-lb (33.9 N-m) 300 in-lb (33.9 N-m) .570” (14.18 mm)
(Clip-to-Stud 1000 V)
AMPERAGE ORDERING
NUMBER
INTERRUPT
RATING
RECOMMENDED TORQUE MAX. BUSBAR
THICKNESS
RECOMMENDED BASE TORQUE
TERMINAL BOLT SIZE TORQUE
200 LFJ102001CST 20 kA 200 in-lb (22.6 N-m) .774” (19.66 mm)
1/4”
5/16”
30-40 in-lb
40-50 in-lb 400 LFJ104001CST 10 kA 200 in-lb (22.6 N-m) .555” (14.10 mm)
450 LFJ104501CST 20 kA 300 in-lb (33.9 N-m) .570” (14.18 mm)
© 2022 Littelfuse, Inc. 177 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
LFJ1000 SERIES SOLAR FUSE BLOCKS
1000 Vdc
Look for this logo to indicate products that are used in solar applications. Visit our website
Littelfuse.com/solar for the latest updates on approvals, certifications, and new products.
Clip-to-Box
200 A
200 A
200 A
400 A
400 A
400 A
450 A
450 A
450 A
Stud-to-Stud
Clip-to-Stud
84.4
(3.32)
76.2
(3.00)
57.2
(2.25)
19.1
(0.75)
108.0
(4.25)
146.1
(5.75)
254.0
(10.0)
15.9
(0.63)
[ ]
ø8.6 THRU ⊔ø19.1 11.2
ø0.34 THRU ⊔ø0.75 0.44
15.88
(0.63)
110.58
(4.35)
101.60
(4.00)
76.20
(3.00)
25.40
(1.00) 123.83
(4.88)
174.63
(6.88)
298.45
(11.75)
[ ]
ø7.1 THRU ⊔ø14.2 x 11.2
ø0.28 THRU ⊔ø0.56 x 0.44
72.4
(2.85)
69.9
(2.75)
50.8
(2.00)
19.1
(0.75)
77.9
(3.07)
155.7
(6.13)
15.9
(0.63)
[ ]
ø8.64 THRU ⊔ø19.1 10.2
ø0.34 THRU ⊔ø0.75 0.40
Dimensions mm (inches)
20.88
(.822)
105.41
(4.150) 87.33
(3.438)
87.33
(3.438)
111.13
(4.375) 195.53
(7.698)
79.76
(3.140)
34.14
(1.344)
74.93
(2.950)
50.00
(1.969)
231.70
(9.122)
22.10
(.870)
∅ 8.64 THRU ⊔∅19.05 10.16
∅ 0.34 THRU [⊔∅0.75 0.40 ]
7/16-14 UNC-2A
1/4-20 UNC-2A
16.13
(.635)
40.79
(1.606)
135.80
(5.347) 108.41
(4.268)
152.40
(6.000)
1/2-13 UNC-2A
254.91
(10.036)
99.61
(3.922)
309.70
(12.193)
30.17
(1.188)
51.11
(2.012)
101.1(4.0081.28
(3.200)
8.61
(.339)
29.49
(1.161)
8.61
(.339) 33.02
(1.300)
∅ 8.64 THRU ⊔∅19.05 10.16
∅ 0.34 THRU [⊔∅0.75 0.40 ]
33.02
(1.30) 29.49
(1.161)
TYP
120.17
(4.731)
133.35
(5.250) 230.94
(9.092)
90.08
(3.547)
278.43
(10.962)
76.20
(3.000)
96.42
(3.796) 8.61
(.339) 8.61
(.339)
∅ 8.64 THRU ⊔∅19.05 10.16
∅ 0.34 THRU [⊔∅0.75 0.40 ]
7/16-14 UNC-2A 3/8-16 UNC-2A
28.57
(1.125)
46.36
(1.825)
74.93
(2.950)
16.13
(.635)
[ ]
ø8.6 THRU ⊔ø19.1 10.2
ø.34 THRU ⊔ø.75 0.40
110.8
(4.36)
101.6
(4.00)
135.8
(5.35)
34.3
(1.35)
309.7
(12.19) 173.9
(6.85) 165.3
(6.51) 144.4
(5.69)
67.3
(2.65)
29.5
(1.16)
33.0
(1.30)
51.1
(2.01)
16.1
(.64)
84.6
(3.33)
76.2
(3.00)
29.5
(1.16)
33.0
(1.30)
21.6
(.85)
120.2
(4.73)
128.8
(5.07)
149.7
(5.89)
158.3
(6.23)
278.4
(10.96)
54.6
(2.15)
46.4
(1.83)
16.1
(.64)
[ ]
ø8.6 THRU ⊔ø19.1 10.2
ø.34 THRU ⊔ø.75 0.40
[ ]
ø8.6 THRU ⊔ø19.1 10.2
ø.34 THRU ⊔ø.75 0.40
16.1
(.64)
74.9
(2.95)
14.0
(.55)
105.4
(4.15)
126.3
(4.97)
231.7
(9.12)
36.0
(1.42) 50.0
(1.97)
22.1
(.87)
20.9
(.82)
40.8
(1.61)
6
Littelfuse.com 178 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
Description
The Littelfuse LPHV fuse holder is designed to house
1000 V fuses. It is not designed for load break but is ideal
for isolating photovoltaic module strings for maintenance
and meets UL requirements for 1000 V solar fuse protection
Features/Benefits
• Touch-safe design offers protection when replacing fuses
• Compact design
• 35 mm DIN Rail Mountable
• Available in 1-, 2-, 3- and 4-pole configurations
• No fuse pullers or tools required for fuse removal
Multi-Pole Assembly Kit
Kits are used to create multi-pole holders from 1-pole LPHV
fuse holders. Please contact factory for more information
Dimensions Inches (mm)
Ordering Information
Specifications
Voltage Rating 1000 VDC
Amperage Rating 30 A
SCCR Rating 20 kA
Power Dissipation 4 W Maximum
Fuse Type 10 X 38 mm up to 1000 VDC
Housing Material Thermoplastic
Terminal Screws Zinc Plated Steel, Phillips/Slotted Head
Pressure Plate Nickel Plated Steel
Fuse Clip Material: Silver Plated Copper Alloy
Operating Temperature -55°C to +125°C
Flammability Rating UL94 V-0
Approval Self-certified 1000 VDC
IEC 60269-2, -4, -6
Environmental RoHS compliant, Lead (Pb) Free
Web Resources
Sample requests, downloadable CAD drawings and other
technical information: Littelfuse.com/lphv
More information about solar applications:
Littelfuse.com/solar
Recommended Fuses
Look for this logo to indicate products that are used in solar applications. Visit our website
Littelfuse.com/solar for the latest updates on approvals, certifications, and new products.
SERIES POLES CATALOG
NUMBER
ORDERING
NUMBER
TERMINAL
TYPE
WIRE
TYPE
WIRE
RANGE
TERMINAL
TORQUE ROHS
LPHV 1 LPHV001 LPHV0001Z
Pressure Plate
75˚ C or 90˚ C
CU Only
Stranded /
[Solid]
#8-14 AWG (2-10 mm2
) /
[#10-14 AWG (2-6 mm2
)]
17.7 in-lbs
(2 N-m)
•
LPHV 2 LPHV002 LPHV0002Z •
LPHV 3 LPHV003 LPHV0003Z •
LPHV 4 LPHV004 LPHV0004Z •
ORDERING NUMBER DESCRIPTION
CYHP001 20 Connector Pincers & 10 handle Pins
CYHP002 Connector Pincer Only
CYHP003 Handle Pin Only
LPHV POWR-SAFE FUSE HOLDERS
1000 VDC
2.33
(59.18)
1.40 (35.56) 2.1
(53.34) 2.8
(71.12) 0.7
(17.78)
3.06
(77.72)
1.67 (42.42) 0.5
(12.7)
10x38 mm 1000 VDC Fuses
SPF 1000 V Series ............................................................. 62
FLU 1000 V Series ............................................................. 31
© 2022 Littelfuse, Inc. 179 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
4-pole
LPSC / LPSM POWR-SAFE FUSE HOLDERS
600 V
Description
Littelfuse POWR-SAFE dead front holders provide optimum
protection to personnel for Class CC and midget-style fuses.
Features/Benefits
Indicating and non-indicating options available 1-, 2-, 3- and 4-pole configurations Easy installation and fuse removal with no additional
pullers or tools required
35 mm DIN-rail mountable
Ventilated design for cooler operation
Recommended Fuses
Class CC
Midget-style (10 x 38 mm)
Ordering Information
INDICATING NON-INDICATING
CATALOG FUSE TYPE POLES
NUMBER
ORDERING
NUMBER
CATALOG
NUMBER
ORDERING
NUMBER
LPSC001ID LPSC0001ZXID LPSC001 LPSC0001Z Class CC 1
LPSC002ID LPSC0002ZXID LPSC002 LPSC0002Z Class CC 2
LPSC003ID LPSC0003ZXID LPSC003 LPSC0003Z Class CC 3
LPSC004ID LPSC0004ZXID LPSC004 LPSC0004Z Class CC 4
LPSM001ID LPSM0001ZXID LPSM001 LPSM0001Z Midget 1
LPSM002ID LPSM0002ZXID LPSM002 LPSM0002Z Midget 2
LPSM003ID LPSM0003ZXID LPSM003 LPSM0003Z Midget 3
LPSM004ID LPSM0004ZXID LPSM004 LPSM0004Z Midget 4
Mulit-Pole Assembly Kit Ordering No. CYHP0001Z-KIT
(Kit contains 20 connector pincers & 10 handle pins)
Specifications
Voltage Rating 600 V ac/dc
Ampere Rating 30 A
Interrupting Rating 200 kA (Class CC)
100 kA (Midget)
Terminal Type Pressure plate
Suggested Torque 17.7 in–lbs
Wire Range #8–#14 CU
Housing Thermoplastic
Fuse Clip Silver plated copper
Zinc Plated Steel Zinc plated steel
Terminal Screws Nickel plated steel
Operating Temperature -50 ˚C to +125 ˚C
Flammability Rating UL 94 V-0
Approvals UL Listed (LPSC File: E14721)
UL Recognized (LPSM File: E14721)
CSA Certified (LPSC/LPSM File: LR7316)
Environmental RoHS Compliant, Lead (Pb) Free
Web Resources
Download CAD drawings and other technical information:
Littelfuse.com/lpsc
Littelfuse.com/lpsm
Dimensions Inches (mm) 1.40 (35.56) 2.1
(53.34) 2.8
(71.12) 0.7
(17.78)
3.09
(78.50)
1-pole 2-pole 3-pole
2.40 MAX
(61.0)
1.40 (35.56) 2.1
(53.34) 2.8
(71.12) 0.7
(17.78)
3.09
(78.50)
1.67 (42.46)
1.38 (35.00)
4-pole
WIRE TYPE
75 ˚C
CU Only
8−14 Stranded UL Class B and Class C wire
10−14 Solid wire
6
Littelfuse.com 180 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
Specifications
Voltage Ratings 600 Vac/dc
Interrupting Rating 200 kA
Ampere Rating 30 and 60 A
LEDs 110 V – 600 V
Terminal Type Pressure Plate
Material Thermoplastic
Flammability Rating UL94 V-0
Terminal Screws Phillips / Slotted
Approvals UL Listed (File: E14721)
CSA Certified (File: 2529839
Environmental RoHS compliant
Ordering Information
Multi-Pole Assembly Kit
Kits are used to create multi-pole holders from 1-pole LFPSJ
fuse holders. Please contact factory for more information.
Web Resources
Download CAD drawings and other technical information:
littelfuse.com/lfpsj
Recommended Fuses
Class J - JTD, JTD_ID, JLS ................................................ 21
30 Amp
60 Amp
LFPSJ POWR-SAFE DEAD FRONT CLASS J FUSE HOLDERS
600 V
Description
Littelfuse Class J POWR-SAFE Dead Front holders
provide optimum protection to personnel and are
UL Listed and CSA Certified.
Features
• Indicating and non-indicating options available
• IP20 degree of protection
• Dual LED indication distinguishes polarity in
DC power applications
• Small compact design offers ultimate flexibility
• 35mm DIN Rail Mountable
• 1-, 2-, and 3-pole configurations
• Easy installation and fuse removal with no
additional pullers or tools required
Dimensions mm (inches)
Note: These dimensions are for reference only. Please contact factory for additional information.
AMP
POLES
PINCER
QUANTITY
PIN
QUANTITY
ASSEMBLY
SETS
ORDERING
NUMBER
30 2 30 10 10 LF3J2PAK
30 3 60 10 10 LF3J3PAK
60 2 30 10 10 LF6J2PAK
60 3 60 10 10 LF6J3PAK
Connector Pincer Handle Pin
AMP
POLES
INDICATION
ORDERING
NUMBER
PACK
QTY.
WIRE TYPE
WIRE
RANGE TORQUE
30
1 – LFPSJ301.Z 6
Stranded
0.75mm2
– 1mm2
1.5mm2
– 50mm2
18 – 1 AWG
2.5 N-m
4.0 N-m
35 lb-in
2 – LFPSJ302.Z 3
3 – LFPSJ303.Z 2
30
1 • LFPSJ301.ZXID 6
2 • LFPSJ302.ZXID 3
3 • LFPSJ303.ZXID 2
60
1 – LFPSJ601.Z 6
2.5mm2
– 50mm2
14 – 1 AWG
4.0 N-m
35 lb-in
2 – LFPSJ602.Z 3
3 – LFPSJ603.Z 2
60
1 • LFPSJ601.ZXID 6
2 • LFPSJ602.ZXID 3
3 • LFPSJ603.ZXID 2
LFPSJ-ID
30A 600V
LFPSJ-ID
30A 600V
LFPSJ-ID
30A 600V
LFPSJ-ID
30A 600V
LFPSJ-ID
30A 600V
LFPSJ-ID
30A 600V
108.0
(4.251)
72.0
(2.835)
36.0
(1.417)
72.08
(2.838)
49.0
(1.929)
7.0
(.276)
117.0
(4.606)
86.0
7.0 (3.386)
(.276)
58.0
(2.283)
116 (4.567)
40.0
(1.575)
LFPSJ-ID
60A 600V
LFPSJ-ID
60A 600V
LFPSJ-ID
60A 600V
LFPSJ-ID
60A 600V
LFPSJ-ID
60A 600V
LFPSJ-ID
60A 600V
80.0
(3.150)
120
(4.72)
© 2022 Littelfuse, Inc. 181 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
BUS BAR SYSTEM
POWR-BAR Distribution
Ordering Information
Description
A key objective for panel designers is safe distribution
of power to multiple fuse holders in a compact design.
The Littelfuse UL 508 Listed bus bar system eliminates
most wire terminations in a timesaving package. A power
distribution block and associated conductors are no longer
needed to feed multiple POWR-SAFE fuse holders.
Features/Benefits
• Touch-safe design offers protection when replacing fuses
• Compact design
• 35 mm DIN Rail Mountable
• Available in one and three phase configurations
• No fuse pullers or tools required for fuse removal
• Can be cut down to optimal size
Recommended Fuse Holders
LPSM / LPSC (600 Vac/dc)............................................... 155
LPHV (1000 Vdc).............................................................. 154
Web Resources
Download CAD drawings, dimensions and other technical
information: littelfuse.com/busbar
Specifications
Voltage Ratings 600 Vac/dc
1000 Vdc*
Current Ratings
CROSS SECTION (mm2
) 18 mm2 25 mm2
END FED 80 A 100 A
CENTER FED 160 A 200 A
SCCR 10 kA, 100 kA†
Conductor Copper
Pitch 17.8 mm
Approvals UL 508 Listed (File E328654)
Environmental RoHS Compliant, Lead (Pb) free
*1 Phase 18 mm2
rated 1000 Vdc up to 160 A when center fed
1 Phase 25 mm2
rated 1000 Vdc up to 200 A when center fed † When protected directly upstream by Class J 175 amperes max
(18 mm2
bus bar) and Class J 200 amperes max (25 mm2
bus bar).
Accessories
Endcaps are standard with all 3 phase configurations except 57-pole.
Endcaps are not needed for the 1 phase configurations from the factory or
if the copper bus is trimmed per the supplied instructions.
Power feed lugs and protective covers are extra.
Pole Protective Covers
PART
NUMBER QUANTITY
CTPT5 5
Endcaps
PART
NUMBER PHASE QUANTITY
EDCP42 Single 50
EDCP7 Three 50
3 PHASE, 25 mm2
LENGTH
ORDERING (mm)
NUMBER POLES
3PH6P25mm 6 104
3PH9P25mm 9 158
3PH12P25mm 12 214
3PH15P25mm 15 266
3PH57P25mm 57 1009
1 PHASE, 18 mm2
LENGTH
ORDERING (mm)
NUMBER POLES
1PH3P18mm 3 50
1PH4P18mm 4 79
1PH6P18mm 6 104
1PH9P18mm 9 155
1PH12P18mm 12 208
1PH15P18mm 15 270
1PH57P18mm 57 1009
1 PHASE, 25 mm2
LENGTH
ORDERING (mm)
NUMBER POLES
1PH3P25mm 3 50
1PH4P25mm 4 79
1PH6P25mm 6 104
1PH9P25mm 9 155
1PH12P25mm 12 208
1PH15P25mm 15 270
1PH57P25mm 57 1009
3 PHASE, 18 mm2
LENGTH
ORDERING (mm)
NUMBER POLES
3PH6P18mm 6 104
3PH9P18mm 9 158
3PH12P18mm 12 214
3PH15P18mm 15 266
3PH57P18mm 57 1009
EDCP42 EDCP7
BB17 BB18 BB19 BB20
Power Feed Lug
PART
NUMBER WIRE RANGE WIRE
TYPE TORQUE PHASE FUSE HOLDER
BB17 #10 - 1/0 AWG CU 50 lb-in Single LPSM/LPSC/LPHV
BB18 #10 - 1/0 AWG CU 50 lb-in Three LPSM/LPSC
BB19 #10 - 1/0 AWG CU 50 lb-in Single LFPSM/LFPSC
BB20 #10 - 1/0 AWG CU 50 lb-in Three LFPSM/LFPSC
Power Feed Lugs are 115A 1000V AC/DC rated
6
Littelfuse.com 182 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LPSM QUICK CONNECT POWR-SAFE FUSE HOLDERS
6.20 (.244)
9.90 (.390)
6.77 (.267)
80.00 (3.15)
59.70 (2.35)
11.99 (4.72)
17.80 (.701)
Specifications
Voltage Rating 600 Vac/dc
Amperage Rating 30 A
Approval UL Recognized (File No. E14721)
CSA Certified (File No. LR7316)
IEC 60269-2
CCC Approved
Terminal Type 1/4” Quick Connect Terminals
Fuse Type Midget (10 X 38 mm) series
Material Thermoplastic
Flammability Rating UL94 V-0
SCCR Rating Same as Fuse Rating
Ordering Information
POLES CATALOG NUMBER ORDERING NUMBER
1 LPSM001QCID LPSM0001ZQCID
2 LPSM002QCID LPSM0002ZQCID
3 LPSM003QCID LPSM0003ZQCID
4 LPSM004QCID LPSM0004ZQCID
2-Pole Assembly Kit Ordering No. CYHP0001Z-KIT
(Kit contains 20 connector pincers & 10 handle pins.)
Recommended Fuses
Midget-Style (10x38mm) ................................................... 30
Web Resources
Download CAD drawings and other technical information:
littelfuse.com/lpsmqc
Description
The LPSM midget fuse holder series is a dead front
design providing protection to personnel when installing
and removing fuses. The compact fuse holder mounts
quickly onto 35 mm DIN rail, decreasing panel layout
and assembly time. This product has two Quick Connect
terminals on both the top and bottom of the holder,
offering an additional connection option. It is available in
1-, 2-, 3- and 4-pole configurations.
Features/Benefits
• Dual 1
⁄4” Quick Connect Terminals on Top and
Bottom of Holder
• Meets Dead Front requirements
• Mountable on 35 mm DIN Rail
• Local LED Indication
Dimensions mm (inches)
© 2022 Littelfuse, Inc. 183 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
354 SERIES 3AG OMNI BLOCK®
Molded Base Type Fuse Block
X X
.55" MAX. 45
X X X X X X X X
A
.312" REF. DIA. C BORE
.06" REF. DEEP (.10 REMAINS)
1.4"
2.19" REF.
.625"
TYP.
.25"
TYP.
.146" REF.
DIA. THRU
.08" REF.
.08" REF. DIA.
.10" DIA. .156" DIA.
.65"
.53" REF.
1.4" .06" DIA. (2)
1.46"
REF.
Dimensions Inches
Web Resources
For additional technical information visit: littelfuse.com
Description
A low profile fuse block featuring individual barriers that
reinforce the fuse clips while providing greater protection
against clip damage and electrical shock. The unique design
permits self-alignment of clips to fuse cap. This, plus a
one-piece clip/terminal, assures low contact resistance.
Specifications
Dielectric Strength 1500 V Minimum
Clip/Terminals Tin-Plated Spring Brass; two different style clips
can be supplied for circuit identity or polarization
Base Glass reinforced Thermoplastic:
Gray except anit-rotation series which is black
Flammability Rating UL94 V-0
Ambient Temperature –40˚C to +85˚C
Ordering Information
CATALOG
NUMBER TERMINALS VOLTAGE CURRENT RATING
UL CSA
354 000 Solder 600VAC/VDC* 30 A 30 A
354 600 3/16” Q.C. 600VAC/VDC 20 A 20 A
354 800 1/4” Q.C. 600VAC/VDC 20 A 20 A
354 900 1/4” Q.C. 600VAC/VDC 30 A 25 A
354 101-GY P.C. Board 600VAC/VDC 15 A 15 A
*30 A capability is based on temperature rise with #10 AWG wire properly soldered.
Technical Information
SOLDER TYPE TERMINALS 3/16” Q.C.
TERMINALS†
1/4” Q.C.
TERMINALS
1/4” Q.C.
TERMINALS† POLES DIM “A”
354 001GY 354 601GY 354 801GY 354 901GY 1 .50”
354 002GY 354 602GY 354 802GY 354 902GY 2 1.12”
354 003GY 354 603GY 354 803GY 354 903GY 3 1.75”
354 004 GY 354 604GY 354 804GY 354 904GY 4 2.38”
354 005GY 354 605GY 354 805GY 354 905GY 5 3.00”
354 006GY 354 606GY 354 806GY 354 906GY 6 3.63”
354 007GY 354 607GY 354 807GY 354 907GY 7 4.25”
354 008GY 354 608GY 354 808GY 354 908GY 8 4.88”
354 009GY 354 609GY 354 809GY 354 909GY 9 5.50”
354 010GY 354 610GY 354 810GY 354 910GY 10 6.13”
354 011GY 354 611GY 354 811GY 354 911GY 11 6.75”
354 012GY 354 612GY 354 812GY 354 912GY 12 7.38”
354 021BL* 354 621BL* 354 821BL* 354 921BL* 1 .50”
354 101GY — — — 1 .50”
† NEMA style
* With Anti-Rotation Boss
Recommended Fuses
3AG Cartridge ................................................................... 34
6
Littelfuse.com 184 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
Features/Benefits
• Ergonomically designed fuse pullers designed to safely
remove power fuses
• Molded design offers more comfortable and natural
grip than traditional pullers, increasing performance
Specifications
FUSE PULLERS & POWR-JAW CLIP CLAMPS
MFP • LPFP • GFP • 097023
Web Resources
For additional technical information visit:
littelfuse.com/clipclamps
Web Resources
For additional technical information visit:
littelfuse.com/fusepullers
Ordering Information
CATALOG
NUMBER
ORDERING
NUMBER VOLTS AMPERES
LCC1 0LCC1 250 0-30
LCC2 0LCC2 250 35-60
LCC2 0LCC2 600 0-30
LCC4 0LCC4 600 35-60
LCC5 0LCC5 250 or 600 70-100
LCC6 0LCC6 250 or 600 110-200
LCC7 0LCC7 250 or 600 225-400
LCC8 0LCC8 250 or 600 450-600
Note: POWR-JAW Clip Clamps are sold individually, not in pairs.
A minimum of 1/8” of clearance between the fuse block barrier and fuse clip is required to
install Clip Clamps.
TYPE OF FUSE
PULLER PART NUMBER FUSE SIZE (DIAMETER)
Midget Fuse MFP 3
⁄16" - 1
⁄2" fuses
Pocket Fuse LPFP
250 V fuses from 0-200 A
600 V fuses from 0-100 A
9
⁄16" - 119⁄32" fuses
Giant Fuse GFP
250 V fuses from 61-600 A
600 V fuses from 61-400 A
11
⁄16" - 219⁄32" fuses
Tri-puller 097023 For ATO, MINI and glass fuses
Features/Benefits
• Improve contact between fuse and clip
• Help prevent unnecessary heat from poor contact
due to the loss of spring force. This reduces:
1. Nuisance fuse opening
2. Premature aging of surrounding components
• High temperature phenolic resin knob for durability
• Wide range of coverage with simple design
GFP
097023
MFP
LPFP
LCC Series POWR-JAW
© 2022 Littelfuse, Inc. 185 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
LFFB SERIES LIMITER BLOCK / LHFB INLINE HOLDER
LFFB
86.61 (3.410)
62.0 (2.44)
25.4 (1.0)
11.94 (0.470)
23.88 (0.940)
2x 49.14 (1.935)
2x 16.19 (0.637)
12.19 (0.480)
12.6 C’BORE X 82, (2) HOLES 2x 5.84 (0.230)
2x 13.0 (0.512)
LHFB
Dimensions mm (inches)
Recommended Fuses
CNL/CNN/CNN_E Fork Lift fuses...................................... 64
HAZGARD (581 series) fuse............................................. 64
Description
The LFFB series fuse block is designed to accept bolt-down
style limiter fuses. Applications include but are not limited to
forklifts, golf carts and other low-voltage battery equipment.
It is specifically designed for the HAZGARD™ fuse but can
be used for CNN and CNL series fuses as well.
Specifications
Voltage Rating 150 Vac/Vdc
Ampere Rating 800 A
Approvals UL Recognized (File: E14721)
Construction Base—Thermoplastic
Studs—Steel Zinc Plated
Ordering Information
CATALOG NUMBER ORDERING NUMBER
LFFB003 LFFB0003Z
Web Resources
Sample requests and other technical information:
littelfuse.com/lffb
Specifications
Voltage Rating 32 V
Ampere Rating 30 A
Fuses 1
/4” x 11
/4” fuses
Wire Size Accepts #16 to #18 gauge wire
Operating Temperature -20˚ C to 80˚ C
Installation Instructions
1. Thread wire through fuse holder body
2. Strip wire insulation per strip gauge
3. Crimp wire to fuse clip*
4. Pull wire through and seat fuse clip in the holder body
5. Insert desired fuse type and rating
6. Snap holder body together
*Recommended crimping tools: Thomas & Betts No. WT-111M
Note: Wire is not supplied with the holder.
Web Resources
Sample requests and other technical information:
littelfuse.com/lhfb
Description
The Littelfuse LHFB waterproof in-line fuse holder is ideal
for harsh environments. The LHFB holder features the
voltage and ampere rating molded into the body, along with
a wire strip gauge. It also withstands solvents and vibration.
Features/Benefits
• Waterproof in-line fuse holder for harsh environments
• One-piece molded thermoplastic body
• Bright green color offers high visibility
• Voltage and ampere rating molded into body
6
Littelfuse.com 186 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
571 & 572 SERIES PANEL-MOUNT FUSE HOLDERS
571
Ordering Information
0.86"
[21.84]
0.92"
[23.37] 0.890" [22.6]
1.12"
[28.45]
1.310"
[33.3]
1.34"
[34.04]
2.10"
[53.34]
1.74"
[44.20]
1.312"
[33.33]
.172 DIA.
Load [4.37]
Line
Mounting Hole
Specifications
Voltage Rating 600 V
Ampere Rating 30 A for Class CC and Midget fuses
Dielectric Strength 4000 V Minimum
Terminals Tin-plated brass combination solder & quick-connect
O-Rings 901-184 (body), 901-260 (knob)
Molded Parts Black thermoplastic
Approvals UL Recognized (File: E14721)
UL Recognized for branch circuit protection
(571OCC/RCC)
CSA Certified (File: LR7316)
Flammability Rating UL94 V-0
Base Temp Rating 110 °C
Web Resources
Additional technical information: Littelfuse.com/571
572
Specifications
Voltage Rating 600 V
Ampere Rating 30 A for Class CC and Midget fuses
Dielectric Strength 4000 V Minimum
Terminals Tin-plated brass combination solder & quick-connect
Molded Parts Black thermoplastic
Approvals UL Recognized (File: E14721)
UL Recognized for branch circuit protection
(5720CC/RCC) Class CC version
CSA Certified (File: LR7316)
Mounting Double "D" punch - Greenlee #61092
(14-18 gauge panel thickness recommended)
Flammability Rating UL94 V-0
Base Temp Rating 110 °C
Web Resources
Additional technical information:Littelfuse.com/572
Description
The 572 series panel mount fuse holders are
designed to minimize installation time. Its unique
design incorporates a snap-mount feature that
allows the holder to be installed without any tools
or mounting hardware.
Description
Panel mount fuse holders are for Midget-Style
and Class CC fuses. Class CC fuses have a
rejection feature on one end cap, which mates
with the rejection feature of Littelfuse Class CC
fuses holders to prevent the installation of fuses
with lower voltage ratings or interrupting ratings.
Watertight version must be front panel mounted.
STANDARD WATERTIGHT BOTTOM
TERMINAL
FUSE LENGTH
RANGE*
FOR USE
CATALOG ORDERING CATALOG ORDERING WITH
571027 05710027L 571027P 05710027LXP Straight 15
⁄16” – 13
⁄8” Midget
Fuses 571028 05710028L 571028P 05710028LXP Rt. Angle
571007 05710007L 571007P 05710007LXP Straight 113⁄32” – 11
⁄2” Midget
Fuses 571008 05710008L 571008P 05710008LXP Rt. Angle
5710CC 057100CCL 5710CCP 057100CCLXP Straight 11
⁄2” Class CC
Fuses 571RCC 05710RCCL 571RCCP 05710RCCLXP Rt. Angle
*Fuse diameter is 13⁄32”
Note: Contact factory for versions with pre-assembled wire leads.
Ordering Information
STANDARD WATERTIGHT BOTTOM
TERMINAL
FUSE LENGTH
RANGE†
FOR USE
CATALOG ORDERING CATALOG ORDERING WITH
572027 05720027L 572027P 05720027LXP Straight 15
⁄16” – 13
⁄8” Midget
Fuses 572028 05720028L 572028P 05720028LXP Rt. Angle
572007 05720007L 572007P 05720007LXP Straight 113⁄32” – 11
⁄2” Midget
Fuses 572008 05720008L 572008P 05720008LXP Rt. Angle
5720CC 057200CCL 5720CCP 057200CCLXP Straight 11
⁄2” Class CC
Fuses 572RCC 05720RCCL 572RCCP 05720RCCLXP Rt. Angle
†Fuse diameter is 13/32”
Note: Contact factory for versions with pre-assembled wire leads.
Dimensions Inches (mm)
Dimensions Inches (mm)
0.756”
1.20”
(30.5)
2.40”
2.10” 0.69”
0.913”
Load
Line
Mounting Hole
© 2022 Littelfuse, Inc. 187 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
342 SERIES 3AG (1
/4" X 11
/4") PANEL MOUNT FUSE HOLDERS
Traditional Panel Mount Type
Right Angle Terminal
FLUTED KNOB KNURLED KNOB
CATALOG/ORDERING TERMINAL
NUMBER
CATALOG/ORDERING
NUMBER
342004 03420004X 342022A 03420022X Solder
342028A 03420028X 342048A 03420048X 3
/16” Q.C.
342828 03420828X 342848A 03420848X 1
/4” Q.C.
.7"
.11" DIA.
.090" X .12"
HOLE 1.31"
.78"
1"
.3"
.7"
1"
.4"
.020" .032"
.502"
.510" .45"
FLATS
TYP.
.69"
HEX
FLATS
.475"
.480" .085" X .12"
HOLE
.78"
1"
.7"
1"
.020"
.78"
1"
.032"
.63"
.14" DIA. HOLE
.502"
.510"
.187"
.475"
.480"
.69"
DIA.
.69"
HEX
FLATS
.250"
.69"
DIA.
TYP. .56"
.69" DIA.
.59"
DETENT .06" DIA.HOLE
.45"
FLATS
TYP.
.085" X .12"
HOLE
.78"
1"
.7"
1"
.020"
.78"
1"
.032"
.63"
.14" DIA. HOLE
.502"
.510"
.187"
.475"
.480"
.69"
DIA.
.69"
HEX
FLATS
.250"
.69"
DIA.
TYP. .56"
.69" DIA.
.59"
DETENT .06" DIA.HOLE
.45"
FLATS
TYP.
Straight Terminal Right Angle Terminal
Right Angle
Terminal
Fluted Knob
Straight Terminal
Knurled Knob
Dimensions Inches
QPL
QPL
Dimensions
in inches
Straight Terminal
FLUTED KNOB KNURLED KNOB
CATALOG/ORDERING TERMINAL
NUMBER
CATALOG/ORDERING
NUMBER
342014A 03420014X 342012A 03420012X Solder
342038A 03420038X 342058A 03420058X 3
/16” Q.C.
342838A 03420838X 342858A 03420858X 1
/4” Q.C.
Specifications
Electrical Rated at 20 A for any voltage up to 250 V
Dielectric Strength 2400 V minimum
Mounting Withstands 15 lb-in mounting torque;
maximum panel thickness .187”
Molded Parts Black thermoplastic (UL94 V-0)
Knob Bayonet style with lettering
Terminals Copper & copper alloy. Tin plated, except ¼”
Quick-Connect terminals are nickel plated
Ambient Temperature –40˚C to +85˚C
Recommended Fuses
3AG Cartridge ................................................................... 34
Web Resources
Additional technical information available at:
littelfuse.com/342
342 Series (Watertight Panel Mount Type) Specifications
Electrical Rated at 20 A for any voltage up to 250 V
Dielectric Strength 1500 V minimum
Mounting Withstands 15 lb-in mounting torque;
maximum panel thickness is .250”
Molded Parts Black thermoset (UL94 V-0)
Knob Screw type
Seal O-ring provides a watertight seal on the
front side of the panel per MIL-PRF-19207
Terminals Copper & copper alloy. Tin plated. Solder type
Ambient Temperature –40˚C to +85˚C
Hardware O-rings (2) and hex nut, unassembled
Ordering Information
Recommended Fuses
3AG Cartridge ................................................................... 34
Description
Panel Mount Fuse holders for 3AG (1
/4" x 11
/4") fuses. Both
fluted and knurled knob terminal options are available.
Ordering Information
Web Resources
Additional technical information available at: littelfuse.com/342
CATALOG NUMBER ORDERING NUMBER
342006A 0342006ZXA
6
Littelfuse.com 188 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
345 SERIES PANEL MOUNT FUSE HOLDERS
International Shock-Safe Panel Mount Type
Insulation Resistance 10,000 megaohm minimum at 500 Vdc
Contact Resistance Less than .005 ohm average at currents up to 1 A
Mounting Threaded styles withstand 15 in-lb mounting torque
Profile panel thickness .032” min/310” max.
Quick mount panel thickness .012” min/360” max.
Rear mount panel thickness.012” min/260” max.
Body Material Black glass-filled thermoplastic (UL94 V-0)
Knob Material Grey, blue or black glass-filled thermoplastic (UL94 V-0)
Hex Nut Material Black glass-filled thermoplastic
Knob Finger-Grip, Fuse Extractor type or Screwdriver Slot,
Fuse Extractor type with plated copper alloy insert
Plated copper alloy contact clips.
Spring loaded, locking mechanism provides an antitease feature and will not vibrate loose
Terminals Copper alloy, Tin-plated
Ambient Temperature –40˚C to +85˚C
Hardware Threaded style fuse holders are supplied with
a thermoplastic hex nut unassembled
Quick mount style fuse holders are supplied with
a push-on type retaining nut, black oxide finish,
unassembled
A synthetic rubber O-ring will be supplied only
with the screwdriver slot knob when the drip-proof
version is requested
AGENCY
APPROVAL
FILE
NUMBER 3AG 5 X 20 mm 2AG
UL E75961 20 A 250 V 10 A 250 V 10 A 250 V
CSA LR91788 20 A 250 V 10 A 250 V 10 A 250 V
VDE 116895E 10 A 250 V 10 A 250 V —
Note: To order with a metal internal tooth lockwasher (L) and/or neoprene panel washer (N)
and/or drip-proof synthetic rubber “O” ring with Neoprene washer (NP) [Screwdriver slot
knob only], add the appropriate suffix (L, N, or NP) respectively.
Please refer to Technical Application Guide section for information
on proper fuse holder de-rating.
Description
Designed to eliminate electrical
shock as defined by IEC Standards
60065 and 60127, these panelmount fuses holders offer a wide
variety of options. This allows for
inventory reduction and versatility.
Features/Benefits
• Anti-tease feature eliminates
circuit interruption when knob
is accidentally depressed
• Five fuse holder types
for maximum flexibility
• Two knob styles—
screwdriver slot and fingergrip
• Drip proof option available on
screwdriver slot knob style
• Two terminal choices
depending on application
Web Resources
For more informations, visit:
littelfuse.com/shocksafe
Recommended Fuses
Ordering Information
Specifications
Glass / Electronic Fuses.................................................... 33
EXAMPLE:
(Complete Assembly with Options) Series Number
FUSE SIZE
2
3
5
LF
RF
HS
LS
QS
8
7
4
3
2
1 L
N
NP
Lockwasher
Neoprene Washer
Drip-Proof O-Ring†
with Neoprene Washer
*Options (L, N, NP) can be ordered
individually or in combination.
†Screwdriver slot knob only.
2AG
.177” x .570”
3/16” (Right Angle)
Dual Purpose Solder/QC
3/16” (Right Angle)
NEMA QC
1/4” (Right Angle)
NEMA/DIN QC
1/4” (Straight)
NEMA/DIN QC
3/16” (Straight)
NEMA QC
3/16” (Straight)
Dual Purpose Solder/QC Rear Mount Body
Black Fingergrip Knob
Low Profile Body
Black Fingergrip Knob
High Profile Body
Screwdriver Slot Knob
Low Profile Body
Screwdriver Slot Knob
Quick Mount Body
Screwdriver Slot Knob
Screwdriver Slot Knob
2AG–Blue Knob
3AG–Grey Knob
5 x 20 mm–Black Knob
3AG
.250” x 1.250”
5 x 20 mm
.197” X .787”
STYLE TERMINALS OPTIONS*
345 3 LS 7 LNP
© 2022 Littelfuse, Inc. 189 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
LSCR SERIES HIGH-SPEED FUSE BLOCKS
Description
Littelfuse LSCR series is a comprehensive line of modular
fuse blocks, designed to accommodate a wide range of
high-speed and UL power fuses. These LSCR series blocks
have a modular stud-type design that enables easy mounting
in panel boards.
Features/Benefits
Modular design reduces inventory requirements
Sold in pairs for convenience
Supplied with nut and belleville washer
Electrical & Mechanical Specifications
700 V • 1000 V • 1500 V
Specifications
Voltage Rating 700 V / 1000 V / 1500 V
Ampere Rating 400 A, 800 A and 1200 A
Withstand Rating 200 kA / 250 kA
Approvals UL Recognized (File: E14721)
cURus Recognized (E14721)
CSA Certified (File: 73160)
Material Base Molded phenolic or thermoplastic
Terminal Construction Steel, zinc-plated
Flammability Rating UL 94 V-0
Environmental RoHS compliant
Country of Origin LSCR0xx - China
LSCR1xx - USA
Web Resources
For more information, visit: Littelfuse.com/LSCR
CATALOG/
ORDERING
NUMBER
AMPERE
RATING
VOLTAGE
RATING
INTERRUPTING
RATING INSULATOR SUGGESTED STUD
TORQUE
MOUNTING
FASTNER
SIZE
SUGGESTED
FASTENER
TORQUE
AGENCY
APPROVALS
AC DC AC DC MATERIAL MAX. BASE
TEMPERATURE (in.lbs) (N•m) (in.lbs) (N•m) UR cURus CSA
LSCR001 400 A 700 V 1500 V 200 kA 250 kA Molded Phenolic 150 °C (302 °F) 61 6.8 #10 20–25 2.3–2.8 • •
LSCR002 800 A 700 V 1500 V 200 kA 250 kA Molded Phenolic 150 °C (302 °F) 192 21.6 #10 20–25 2.3–2.8 • •
LSCR101 400 A 1000 V 1000 V 200 kA 200 kA Thermoplastic 125 °C (257 °F) 67.5–82.5 7.6–9.3 #10 12 max 1.3 max •
LSCR102 800 A 1000 V 1000 V 200 kA 200 kA Thermoplastic 125 °C (257 °F) 207–253 23.4–28.6 #10 12 max 1.3 max •
LSCR103 1200 A 1000 V 1000 V 200 kA 200 kA Thermoplastic 125 °C (257 °F) 270–330 30.5–37.3 1/4" 12 max 1.3 max •
6
Littelfuse.com 190 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
LSCR SERIES HIGH-SPEED FUSE BLOCKS
Dimensions mm (inches)
LSCR103
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-LSCR000
Littelfuse
® REVISION DRWG NO.
TITLE
B
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 2/17/2015
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
LSCR SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 2/17/2015 514064GCP - RELEASE MRY
62.87
[2.48]
33.46
[1.32]
6.35
[0.25]
17.78
[0.70]
47.63
[1.88]
33.02
[1.30]
17.78
[0.70]
53.98
[2.13]
40.64
[1.60]
25.40
[1.00]
12.70
[0.50]
25.40
[1.00]
92.25
[3.63]
60.33
[2.38]
12.70
[0.50]
1/4-20" x 1.00"
USABLE LENGTH
3/8-16" x 1.00"
USABLE LENGTH
5.15 x 7.62 SLOT
[0.203 x 0.30]
5.15 x 7.62 SLOT
[0.203 x 0.30]
PART NUMBER VOLTAGE RATING AMPERE RATING SUGGESTED TORQUE
LSCR001 700 400A 6.8 N-m (61 IN-LBS)
LSCR002 700 800A 21.6 N-m (192 IN-LBS)
SPECIFICATIONS:
VOLTAGE RATING: SEE CHART
AMPERE RATING: SEE CHART
INTERRUPT RATING: 200kA AC/ 20kA DC
SUGGESTED TORQUE: SEE CHART
APPROVALS: UL RECOGNIZED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 73160)
DATA SHEET REVISION: 021115
LSCR001
LSCR002
6.35
[0.25]
LSCR001
LSCR101
LSCR002
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A OL-LSCR000
Littelfuse
® REVISION DRWG NO.
TITLE
B
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 2/17/2015
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
LSCR SERIES OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 2/17/2015 514064GCP - RELEASE MRY
62.87
[2.48]
33.46
[1.32]
6.35
[0.25]
17.78
[0.70]
47.63
[1.88]
33.02
[1.30]
17.78
[0.70]
53.98
[2.13]
40.64
[1.60]
25.40
[1.00]
12.70
[0.50]
25.40
[1.00]
92.25
[3.63]
60.33
[2.38]
12.70
[0.50]
1/4-20" x 1.00"
USABLE LENGTH
3/8-16" x 1.00"
USABLE LENGTH
5.15 x 7.62 SLOT
[0.203 x 0.30]
5.15 x 7.62 SLOT
[0.203 x 0.30]
PART NUMBER VOLTAGE RATING AMPERE RATING SUGGESTED TORQUE
LSCR001 700 400A 6.8 N-m (61 IN-LBS)
LSCR002 700 800A 21.6 N-m (192 IN-LBS)
SPECIFICATIONS:
VOLTAGE RATING: SEE CHART
AMPERE RATING: SEE CHART
INTERRUPT RATING: 200kA AC/ 20kA DC
SUGGESTED TORQUE: SEE CHART
APPROVALS: UL RECOGNIZED (FILE NO. E14721)
CSA CERTIFIED (FILE NO. 73160)
DATA SHEET REVISION: 021115
LSCR001
LSCR002
6.35
[0.25]
LSCR102
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
Littelfuse® REVISION DRWG NO.
TITLE
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
A OL-LSCR102
B
myork 9/2/2015
1000V 800A FUSE HOLDER OUTLINE
NTS
REVISION
REV DATE DESCRIPTION
A 5/17/16 515753GCP - RELEASE PER EM2797 MRY
© 2022 Littelfuse, Inc. 191 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
FUSE SERIES
CATALOG NUMBER LSCR001 LSCR002 LSCR101 LSCR102 LSCR103
TERMINAL SIZE 1/4–20 UNC 3/8–16 UNC 1/4–20 UNC 3/8–16 UNC 1/2–13 UNC
VOLTAGE RATING 700 V ac/1500 V dc 700 V ac/1500 V dc 1000 V ac/dc 1000 V ac/dc 1000 V ac/dc
AMPERE RATING 400 A 800 A 400 A 800 A 1200 A
L15S
70–400 X X
500–800 X X
L17T
70–250 X X
300–800 X X
L25S
35–200 X X
225–800 X X
L50S
35–200 X X
225–800 X X
700–800 X
L50QS
35–200 X X
225–800 X X
700–800 X
L60S
35–200 X X
225–800 X X
700–800 X
KLC
35–60 X X
70–800 X X
225–800 X
L70S
35–100 X X
125–800 X X
450–800 X
L70QS
35–100 X X
125–800 X X
450–800 X
JLLN
70–200 X X
225–800 X X
700–1200 X
JLLS
70–200 X X
225–800 X X
700–1200 X
JLS
70–100 X X
110–200 X X
225–400 X X
450–600 X X
SPFJ
70–100 X X
125–200 X X
250–400 X X
450 X
L75QS
35–100 X X
125–800 X X
450–800 X
High-Speed Fuse Block Selection Guide
LSCR SERIES HIGH-SPEED FUSE BLOCKS
6
Littelfuse.com 192 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
Specifications
Voltage Rating 600 V
Ampere Range 1 – 400 A
Approvals UL Recognized E14721
Material Base: 150˚ C general purpose phenolic
Terminal: Tin plated aluminum
Web Resources
Download CAD drawings and other technical information:
littelfuse.com/1lfs
Dimensions Inches (mm)
1LFS SERIES HIGH-SPEED FUSE BLOCKS
600V • 1-400 A
Description
Littelfuse modular style high-speed semiconductor fuse
blocks accommodate a wide range of semiconductor fuses.
Blocks are provided in pairs with fuse mounting hardware.
Features/Benefits
• Modular design reduces inventory requirements
• Sold in pairs for convenience
• Constructed of general purpose phenolic (with tin plated
aluminum terminations)
Ordering Information
1LFS101
CATALOG
NUMBER
AMPERE
RATING WIRE RANGE WIRE
RATING APPROVALS
1LFS101 100 A #2/0 - 14 CU/AL 120 in-lbs UL Recognized
1LFS102 400 A 250MCM - #6 CU/AL 275 in-lbs UL Recognized
FUSE SERIES AMPERE RATINGS
L15S 70-100
L25S 35-100
L50S 35-100
L60S 35-100
KLC 1-100
1LFS101
FUSE SERIES AMPERE RATINGS
L15S 70-400
L25S 70-200
L50S 125-200
L60S 125-200
1LFS102
Recommended Fuses 1LFS102
© 2022 Littelfuse, Inc. 193 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
Connectors
Box lug connectors are designed for use with a single or
multiple, solid or class B or C stranded conductor. For UL
approved use of more than one conductor per connector
opening, contact Littelfuse Technical Service. Manufacturers
of cable terminations can furnish crimp-on sleeves for fine
stranded conductors which permit these conductors to be
used with box lugs.
Ampere Ratings
The ampere rating per pole for power distribution blocks is
based on the line ampacity of 75°C insulated conductors per
NEC® Table 310.16. If 60°C insulated conductors are used,
load must not exceed the ampacity of 60°C conductors.
Use of conductors rated in excess of 75°C is permitted (for
example 90°C), however, load must not exceed the ampacity
of 75°C conductors.
Specifications
Voltage Rating 600 V
Current Rating Based on NEC Table 310.16, using 75°C copper wire
SCCR Consult Factory
Material Phenolic rated at 150°C and Thermoplastic
rated at 125°C (LD1400 and LS1300 series only)
Connector Aluminum: Highly conductive aluminum, tin plated
Copper: Highly conductive copper, tin plated
Flammability Rating UL94 V-0
Approvals UL Recognized - 0LD/0LS Series (File: E171395)
LFD/LFS Series (File: E309688)
CSA Certified - 0LD/0LS Series (File: LR700111)
LFD/LFS Series (File: 007316_0_000)
UL Listed - 0LD57xxxx (File: E482231)
Environmental RoHS compliant, Lead (Pb) free
Ordering Information
See Selection Guide on next page
Web Resources
For dimension, CAD and 3-D drawings, visit:
Littelfuse.com/powrbloks
POWR-BLOKS
Distribution Blocks • Splicer Blocks • Covers
Description
POWR-BLOKS power distribution blocks offer a safe,
convenient way of splicing cables, providing a fixed junction
tap-off point or splitting primary power into secondary
circuits. Lx2xxx-DIN series offers integral DIN-Rail mount
and an optional hinged safety cover.
Optional power distribution block covers provide protection
against accidental shorting between poles caused by
loose wires, tools, or other conductive material. They also
protect personnel from accidentally contacting energized
connectors.
Applications
Typical applications include heating, air conditioning and
refrigeration systems, elevator systems, material handling
equipment, control panels, motor controls, switchgear,
and anywhere power needs to be distributed to more
than one load.
Hinged Plastic Covers
Clear Plastic Covers
6
Littelfuse.com 194 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
POWR-BLOKS
Distribution Block Selection Guide
Note: AL = Aluminum / CU = Copper *Covers sold separately
AMP
PER
POLE
POLES
CONNECTOR
MATERIAL
LINE CONNECTION LOAD CONNECTION
FIGURE
CATALOG/
ORDERING
NUMBER
*PLASTIC
COVER
ORDERING
NUMBER
CONNECTOR
IMAGE
OPENINGS
PER POLE
LUG TYPE WIRE
RANGE
TORQUE
RANGE
CONNECTOR
IMAGE
OPENINGS
PER POLE LUG TYPE WIRE
RANGE
TORQUE
RANGE
115 1
AL
1 Slotted #2 - #14 35-50 in-lbs 4 Slotted #10 - #18 7 in-lbs 10 0LD14401Z LPBC1441
115 2 1 Slotted #2 - #14 35-50 in-lbs 4 Slotted #10 - #18 7 in-lbs 10 0LD14402Z LPBC1442
115 3 1 5/32" Hex #2 - #14 50-40 in-lbs 4 5/64" Hex #10 - #18 7 in-lbs 2 LFD14003Z LPBC13
115 4 1 Slotted #2 - #14 35-50 in-lbs 4 Slotted #10 - #18 7 in-lbs 10 0LD14404Z LPBC1444
175 1
AL
1 5/16" Hex 2/0 - #14 35-120 in-lbs 4 Slotted #4 - #14 35 in-lbs 3 0LD25701Z LPBC21
175 2 1 3/16" Hex 2/0 - #14 40-120 in-lbs 4 1/8" Hex #4 - #14 35 in-lbs 3 LFD25702Z LPBC22
175 3 1 3/16" Hex 2/0 - #14 40-120 in-lbs 4 1/8" Hex #4 - #14 35 in-lbs 3 LFD25703Z LPBC23
175 1
AL
1 3/16" Hex 2/0 - #14 35-120 in-lbs 4 1/8" Hex #4 - #14 35 in-lbs 4 0LD25701ZXDIN 0LCH1321Z
175 2 1 3/16" Hex 2/0 - #14 35-120 in-lbs 4 1/8" Hex #4 - #14 35 in-lbs 4 0LD25702ZXDIN 0LCH1322Z
175 3 1 3/16" Hex 2/0 - #14 35-120 in-lbs 4 1/8" Hex #4 - #14 35 in-lbs 4 0LD25703ZXDIN 0LCH1323Z
175 Adder 1 – 2/0 - #14 35-120 in-lbs 4 – #4 - #14 35 in-lbs 4 0LD2570AZXDIN -
175 1
CU
1 3/16" Hex 2/0 - #14 35-120 in-lbs 4 Slotted #4 - #14 35 in-lbs 3 0LD29701Z LPBC21
175 2 1 3/16" Hex 2/0 - #14 35-120 in-lbs 4 Slotted #4 - #14 35 in-lbs 3 0LD29702Z LPBC22
175 3 1 3/16" Hex 2/0 - #14 35-120 in-lbs 4 Slotted #4 - #14 35 in-lbs 3 0LD29703Z LPBC23
175 1
CU
1 3/16" Hex 2/0 - #14 35-120 in-lbs 4 Slotted #4 - #14 35 in-lbs 4 0LD29701ZXDIN 0LCH1321Z
175 2 1 3/16" Hex 2/0 - #14 35-120 in-lbs 4 Slotted #4 - #14 35 in-lbs 4 0LD29702ZXDIN 0LCH1322Z
175 3 1 3/16" Hex 2/0 - #14 35-120 in-lbs 4 Slotted #4 - #14 35 in-lbs 4 0LD29703ZXDIN 0LCH1323Z
175 Adder 1 – 2/0 - #14 35-120 in-lbs 4 – #4 - #14 35 in-lbs 4 0LD2970AZXDIN -
175 2
AL
1 5/16" Hex 2/0 - #14 35-120 in-lbs 4 Slotted #4 - #14 35 in-lbs 1 0LD04022Z LPBC02
175 3 1 5/16" Hex 2/0 - #14 35-120 in-lbs 4 Slotted #4 - #14 35 in-lbs 1 0LD04023Z LPBC03
175 2
AL
1 5/16" Hex 2/0 - #14 35-120 in-lbs 6 Slotted #4 - #14 35 in-lbs 1 0LD04012Z LPBC02
175 3 1 3/16" Hex 2/0 - #14 40-120 in-lbs 6 1/8" Hex #4 - #14 35 in-lbs 1 LFD04013Z LPBC03
175 1
AL
1 5/16" Hex 2/0 - #14 35-120 in-lbs 6 1/8" Hex #4 - #14 35 in-lbs 4 0LD25801ZXDIN 0LCH1321Z
175 2 1 5/16" Hex 2/0 - #14 35-120 in-lbs 6 1/8" Hex #4 - #14 35 in-lbs 4 0LD25802ZXDIN 0LCH1322Z
175 3 1 5/16" Hex 2/0 - #14 35-120 in-lbs 6 1/8" Hex #4 - #14 35 in-lbs 4 0LD25803ZXDIN 0LCH1323Z
175 Adder 1 5/16" Hex 2/0 - #14 35-120 in-lbs 6 1/8" Hex #4 - #14 35 in-lbs 4 0LD2580AZXDIN -
310 3 AL 1 5/16" Hex 350kcmil - #6 40-120 in-lbs 2 3/16" Hex 2/0 - #14 35-120 in-lbs 9 0LD335543Z 0LCH1333Z
310 2
AL
1 5/16" Hex 350kcmil - #6 275 in-lbs 6 Slotted #4 - #14 35 in-lbs 1 0LD04042Z LPBC02
310 3 1 5/16" Hex 350kcmil - #6 275 in-lbs 6 Slotted #4 - #14 35 in-lbs 1 0LD04043Z LPBC03
335 1
AL
1 5/16" Hex 400kcmil - #6 275 in-lbs 4 Slotted #2 - #14 35-50 in-lbs 5 0LD35521Z LPBC31
335 2 1 5/16" Hex 400kcmil - #6 275 in-lbs 4 Slotted #2 - #14 35-50 in-lbs 5 0LD35522Z LPBC32
380 3 1 3/8" Hex 500kcmil - #6 375 in-lbs 4 5/32" Hex #2 - #14 35-50 in-lbs 5 LFD35523Z LPBC33
335 1
AL
1 5/16" Hex 400kcmil - #6 275 in-lbs 6 Slotted #2 - #14 35-50 in-lbs 5 0LD35531Z LPBC31
335 2 1 5/16" Hex 400kcmil - #6 275 in-lbs 6 Slotted #2 - #14 35-50 in-lbs 5 0LD35532Z LPBC32
380 3 1 3/8" Hex 500kcmil - #6 375 in-lbs 6 5/32" Hex #2 - #14 40-50 in-lbs 5 LFD35533Z LPBC33
335 1
AL
1 Slotted 400kcmil - #6 275 in-lbs 8 Slotted #2 - #14 35-50 in-lbs 6 0LD45601Z LPBC41
335 2 1 Slotted 400kcmil - #6 275 in-lbs 8 Slotted #2 - #14 35-50 in-lbs 6 0LD45602Z LPBC42
335 3 1 Slotted 400kcmil - #6 275 in-lbs 8 Slotted #2 - #14 35-50 in-lbs 6 0LD45603Z LPBC43
350 1
AL
2 3/16" Hex 2/0 - #14 35-120 in-lbs 6 Slotted #4 - #14 35 in-lbs 5 0LD35551Z LPBC31
350 2 2 3w/16" Hex 2/0 - #14 35-120 in-lbs 6 Slotted #4 - #14 35 in-lbs 5 0LD35552Z LPBC32
350 3 2 3/16" Hex 2/0- #14 40-120 in-lbs 6 1/8" Hex #4 - #14 35 in-lbs 5 LFD35553Z LPBC33
350 1
CU
2 Slotted 2/0 - #14 35-120 in-lbs 6 1/8" Hex #4 - #14 35 in-lbs 5 0LD39551Z LPBC31
350 2 2 Slotted 2/0 - #14 35-120 in-lbs 6 1/8" Hex #4 - #14 35 in-lbs 5 0LD39552Z LPBC32
350 3 2 Slotted 2/0 - #14 35-120 in-lbs 6 1/8" Hex #4 - #14 35 in-lbs 5 0LD39553Z LPBC33
380 1
CU
1 Slotted 500kcmil - #6 375 in-lbs 6 5/32" Hex #2 - #14 35-50 in-lbs 5 0LD39531Z LPBC31
380 2 1 Slotted 500kcmil - #6 375 in-lbs 6 5/32" Hex #2 - #14 35-50 in-lbs 5 0LD39532Z LPBC32
380 3 1 Slotted 500kcmil - #6 375 in-lbs 6 5/32" Hex #2 - #14 35-50 in-lbs 5 0LD39533Z LPBC33
380 1
AL
1 Slotted 500kcmil - #4 375 in-lbs 6 Slotted #2 - #14 35-50 in-lbs 6 0LD45511Z LPBC41
380 2 1 Slotted 500kcmil - #4 375 in-lbs 6 Slotted #2 - #14 35-50 in-lbs 6 0LD45512Z LPBC42
380 3 1 Slotted 500kcmil - #4 375 in-lbs 6 Slotted #2 - #14 35-50 in-lbs 6 0LD45513Z LPBC43
380 1
AL
1 3/8" Hex 500kcmil - #4 375 in-lbs 6 5/16" Hex 2/0 - #14 35-120 in-lbs 7 0LD55791Z LPBC51
380 2 1 3/8" Hex 500kcmil - #4 375 in-lbs 6 5/16" Hex 2/0 - #14 35-120 in-lbs 7 0LD55792Z LPBC52
380 3 1 3/8" Hex 500kcmil - #4 375 in-lbs 6 5/16" Hex 2/0 - #14 40-120 in-lbs 7 LFD55793Z LPBC53
© 2022 Littelfuse, Inc. 195 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
POWR-BLOKS
Distribution Block Selection Guide
AMP
PER
POLE
POLES
CONNECTOR
MATERIAL
LINE CONNECTION LOAD CONNECTION
FIGURE
CATALOG/
ORDERING
NUMBER
*PLASTIC
COVER
ORDERING
NUMBER
CONNECTOR
IMAGE
OPENINGS
PER POLE LUG TYPE WIRE
RANGE
TORQUE
RANGE
CONNECTOR
IMAGE
OPENINGS
PER POLE LUG TYPE WIRE
RANGE
TORQUE
RANGE
380 1
AL
1 3/8" Hex 500kcmil- #4 375 in-lbs 8 5/32" Hex #2 - #14 35-50 in-lbs 7 0LD55941Z LPBC51
380 2 1 3/8" Hex 500kcmil- #4 375 in-lbs 8 5/32" Hex #2 - #14 35-50 in-lbs 7 0LD55942Z LPBC52
380 3 1 3/8" Hex 500kcmil- #4 375 in-lbs 8 5/32" Hex #2 - #14 35-50 in-lbs 7 0LD55943Z LPBC53
380 1
AL
1 Slotted 500kcmil - #4 375 in-lbs 12 Slotted #2 - #14 35-50 in-lbs 7 0LD55521Z LPBC51
380 2 1 Slotted 500kcmil - #4 375 in-lbs 12 Slotted #2 - #14 35-50 in-lbs 7 0LD55522Z LPBC52
380 3 1 3/8" Hex 500kcmil - #4 375 in-lbs 12 5/32" Hex #2 - #14 40-50 in-lbs 7 LFD55523Z LPBC53
420 1 AL 1 1/2" Hex 600kcmil- #2 375 in-lbs 3 3/16" Hex 1/0 - #14 35-120 in-lbs 9 0LD35881Z 0LCH1331Z
6 5/32" Hex #2 - #14 35-50 in-lbs
420 3 AL 1 1/2" Hex 600kcmil- #2 375 in-lbs 3 3/16" Hex 1/0 - #14 35-120 in-lbs 9 0LD35883Z 0LCH1333Z 6 5/32" Hex #2 - #14 35-50 in-lbs
420 1
AL
1 1/2" Hex 600kcmil- #2 375 in-lbs 12 1/8" Hex #4 - #14 35 in-lbs 9 0LD35951Z 0LCH1331Z
420 2 1 1/2" Hex 600kcmil- #2 375 in-lbs 12 1/8" Hex #4 - #14 35 in-lbs 9 0LD35952Z 0LCH1332Z
510 1
AL
2 5/16" Hex 250kcmil - #6 275 in-lbs 12 1/8" Hex #4 - #14 35 in-lbs 9 0LD35961Z 0LCH1331Z
510 2 2 5/16" Hex 250kcmil - #6 275 in-lbs 12 1/8" Hex #4 - #14 35 in-lbs 9 0LD35962Z 0LCH1332Z
510 3 2 5/16" Hex 250kcmil - #6 275 in-lbs 12 1/8" Hex #4 - #14 35 in-lbs 9 0LD35963Z 0LCH1333Z
760 1
AL
2 3/8" Hex 500kcmil - #6 375 in-lbs 8 5/16" Hex 2/0 - #14 35-120 in-lbs 7 0LD55861Z LPBC51
760 2 2 3/8" Hex 500kcmil - #6 375 in-lbs 8 5/16" Hex 2/0 - #14 35-120 in-lbs 7 0LD55862Z LPBC52
760 3 2 3/8" Hex 500kcmil - #4 375 in-lbs 8 3/16" Hex 2/0 - #14 40-120 in-lbs 7 LFD55863Z LPBC53
760 1
CU
2 3/8" Hex 500kcmil- #4 375 in-lbs 8 3/16" Hex 2⁄0 - #14 35-120 in-lbs 7 0LD59861Z LPBC51
760 2 2 3/8" Hex 500kcmil- #4 375 in-lbs 8 3/16" Hex 2⁄0 - #14 35-120 in-lbs 7 0LD59862Z LPBC52
760 3 2 3/8" Hex 500kcmil- #4 375 in-lbs 8 3/16" Hex 2⁄0 - #14 35-120 in-lbs 7 0LD59863Z LPBC53
760 1
AL
2 3/8" Hex 500kcmil- #6 375 in-lbs 12 Slotted #4 - #14 35 in-lbs 7 0LD55921Z LPBC51
760 2 2 3/8" Hex 500kcmil- #6 375 in-lbs 12 Slotted #4 - #14 35 in-lbs 7 0LD55922Z LPBC52
760 3 2 3/8" Hex 500kcmil- #4 375 in-lbs 12 1/8" Hex #4 - #14 35 in-lbs 7 LFD55923Z LPBC53
760 1
CU
2 3/8" Hex 500kcmil- #6 375 in-lbs 12 Slotted #2 - #14 35-50 in-lbs 7 0LD59921Z LPBC51
760 2 2 3/8" Hex 500kcmil- #6 375 in-lbs 12 Slotted #2 - #14 35-50 in-lbs 7 0LD59922Z LPBC52
760 3 2 3/8" Hex 500kcmil- #6 375 in-lbs 12 Slotted #2 - #14 35-50 in-lbs 7 0LD59923Z LPBC53
760 3 AL 2 1/2" Hex 500kcmil - #4 375 in-lbs 12 5/16" Hex #2 - #14 35-50 in-lbs 7 0LD54083Z LPBC53
840 3 AL 2 1/2" Hex 600kcmil- #2 375 in-lbs
4 5/16" Hex 3/0 - #6 120 in-lbs
7 0LD54113Z LPBC53 4 5/16" Hex #4 - #14 35 in-lbs
950 1 AL 2 9/16" Hex 750kcmil - 1/0 600 in-lbs 10 3/16" Hex 2/0 - #14 50-120 in-lbs 8 0LD57041Z 0LCH1351Z
950 3 AL 2 9/16" Hex 750kcmil - 1/0 600 in-lbs 10 3/16" Hex 2/0 - #14 50-120 in-lbs 8 0LD57043Z 0LCH1351Z
950 1 AL 2 9/16" Hex 750kcmil - 1/0 600 in-lbs 3 5/16" Hex 250kcmil - #6 275 in-lbs 8 0LD57051Z 0LCH1351Z 12 5/32" Hex #2 - #14 40-50 in-lbs
950 3 AL 2 9/16" Hex 750kcmil - 1/0 600 in-lbs 3 5/16" Hex 250kcmil - #6 275 in-lbs 8 0LD57053Z 0LCH1351Z 12 5/32" Hex #2 - #14 40-50 in-lbs
950 1 AL 2 9/16" Hex 750kcmil - 1/0 600 in-lbs 4 1/4" Hex 3/0 - #6 180 in-lbs 8 0LD57071Z 0LCH1351Z 12 5/32" Hex #2 - #14 40-50 in-lbs
950 3 AL 2 9/16" Hex 750kcmil - 1/0 600 in-lbs 4 1/4" Hex 3/0 - #6 180 in-lbs 8 0LD57073Z 0LCH1351Z 12 5/32" Hex #2 - #14 40-50 in-lbs
Note: AL = Aluminum / CU = Copper
*Covers sold separately
6
Littelfuse.com 196 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
POWR-BLOKS
Splicer Block Selection Guide
AMP
PER
POLE
POLES
CONNECTOR
MATERIAL
LINE CONNECTION LOAD CONNECTION
FIGURE
CATALOG/
ORDERING
NUMBER
*PLASTIC
COVER
ORDERING
NUMBER
CONNECTOR
IMAGE
OPENINGS
PER POLE LUG TYPE WIRE
RANGE
TORQUE
RANGE
CONNECTOR
IMAGE
OPENINGS
PER POLE LUG TYPE WIRE RANGE TORQUE
RANGE
115 1
AL
1 Slotted #2 - #14 35-50 in-lbs 1 Slotted #2 - #14 35-50 in-lbs 10 0LS13301Z LPBC1441
115 2 1 Slotted #2 - #14 35-50 in-lbs 1 Slotted #2 - #14 35-50 in-lbs 10 0LS13302Z LPBC1442
115 3 1 5/32" Hex #2 - #14 40-50 in-lbs 1 5/32" Hex #2 - #14 40-50 in-lbs 2 LFS13003Z -
115 4 1 Slotted #2 - #14 35-50 in-lbs 1 Slotted #2 - #14 35-50 in-lbs 10 0LS13304Z LPBC1444
115 1
AL
1 Slotted #2 - #14 35-50 in-lbs 1 Slotted #2 - #14 35-50 in-lbs 3 0LS25521Z LPBC21
115 2 1 Slotted #2 - #14 35-50 in-lbs 1 Slotted #2 - #14 35-50 in-lbs 3 0LS25522Z LPBC22
115 3 1 Slotted #2 - #14 35-50 in-lbs 1 Slotted #2 - #14 35-50 in-lbs 3 0LS25523Z LPBC23
150 1
CU
1 3/16" Hex 1/0 - #14 35-120 in-lbs 1 3/16" Hex 1/0 - #14 35-120 in-lbs 3 0LS21211Z LPBC21
150 2 1 3/16" Hex 1/0 - #14 35-120 in-lbs 1 3/16" Hex 1/0 - #14 35-120 in-lbs 3 0LS21212Z LPBC22
150 3 1 3/16" Hex 1/0 - #14 35-120 in-lbs 1 3/16" Hex 1/0 - #14 35-120 in-lbs 3 0LS21213Z LPBC23
175 1
AL
1 5/16" Hex 2/0 - #14 35-120 in-lbs 1 5/16" Hex 2/0 - #14 35-120 in-lbs 3 0LS25721Z LPBC21
175 2 1 5/16" Hex 2/0 - #14 35-120 in-lbs 1 5/16" Hex 2/0 - #14 35-120 in-lbs 3 0LS25722Z LPBC22
175 3 1 3/16" Hex 2/0 - #14 40-120 in-lbs 1 3/16" Hex 2/0 - #14 40-120 in-lbs 3 LFS25723Z LPBC23
175 1
AL
1 5/16" Hex 2/0 - #14 35-120 in-lbs 1 5/16" Hex 2/0 - #14 35-120 in-lbs 4 0LS25721ZXDIN 0LCH1321Z
175 2 1 5/16" Hex 2/0 - #14 35-120 in-lbs 1 5/16" Hex 2/0 - #14 35-120 in-lbs 4 0LS25722ZXDIN 0LCH1322Z
175 3 1 5/16" Hex 2/0 - #14 35-120 in-lbs 1 5/16" Hex 2/0 - #14 35-120 in-lbs 4 0LS25723ZXDIN 0LCH1323Z
175 Adder 1 – 2/0 - #14 35-120 in-lbs 1 – 2/0 - #14 35-120 in-lbs 4 0LS2572AZXDIN -
175 1
CU
1 5/16" Hex 2/0 - #14 35-120 in-lbs 1 5/16" Hex 2/0 - #14 35-120 in-lbs 4 0LS29721ZXDIN 0LCH1321Z
175 2 1 5/16" Hex 2/0 - #14 35-120 in-lbs 1 5/16" Hex 2/0 - #14 35-120 in-lbs 4 0LS29722ZXDIN 0LCH1322Z
175 3 1 5/16" Hex 2/0 - #14 35-120 in-lbs 1 5/16" Hex 2/0 - #14 35-120 in-lbs 4 0LS29723ZXDIN 0LCH1323Z
175 Adder 1 – 2/0 - #14 35-120 in-lbs 1 – 2/0 - #14 35-120 in-lbs 4 0LS2972AZXDIN -
255 1
AL
1 5/16" Hex 250kcmil - #6 275 in-lbs 1 5/16" Hex 250kcmil - #6 275 in-lbs 5 0LS31231Z LPBC31
255 2 1 5/16" Hex 250kcmil - #6 275 in-lbs 1 5/16" Hex 250kcmil - #6 275 in-lbs 5 0LS31232Z LPBC32
255 3 1 5/16" Hex 250kcmil - #6 275 in-lbs 1 5/16" Hex 250kcmil - #6 275 in-lbs 5 0LS31233Z LPBC33
255 1
CU
1 3/8" Hex 250kcmil - #6 375 in-lbs 1 3/8" Hex 250kcmil - #6 375 in-lbs 5 0LS31241Z LPBC31
255 2 1 3/8" Hex 250kcmil - #6 375 in-lbs 1 3/8" Hex 250kcmil - #6 375 in-lbs 5 0LS31242Z LPBC32
255 3 1 3/8" Hex 250kcmil - #6 375 in-lbs 1 3/8" Hex 250kcmil - #6 375 in-lbs 5 0LS31243Z LPBC33
310 2
AL
1 5/16" Hex 350kcmil - #6 275 in-lbs 1 5/16" Hex 350kcmil - #6 275 in-lbs 1 0LS03032Z LPBC02
310 3 1 5/16" Hex 350kcmil - #6 275 in-lbs 1 5/16" Hex 350kcmil - #6 275 in-lbs 1 0LS03033Z LPBC03
310 1
AL
1 5/16" Hex 350kcmil - #6 275 in-lbs 1 5/16" Hex 350kcmil - #6 275 in-lbs 5 0LS31261Z LPBC31
310 2 1 5/16" Hex 350kcmil - #6 275 in-lbs 1 5/16" Hex 350kcmil - #6 275 in-lbs 5 0LS31262Z LPBC32
310 3 1 5/16" Hex 350kcmil - #6 275 in-lbs 1 5/16" Hex 350kcmil - #6 275 in-lbs 5 0LS31263Z LPBC33
350 3 AL 2 5/16" Hex 2/0 - #14 35-120 in-lbs 2 5/16" Hex 2/0 - #14 35-120 in-lbs 9 0LS33053Z 0LCH1333Z
420 1
AL
1 1/2" Hex 600kcmil - #4 500 in-lbs 1 1/2" Hex 600kcmil - #4 500 in-lbs 6 0LS45571Z LPBC41
420 2 1 1/2" Hex 600kcmil - #4 500 in-lbs 1 1/2" Hex 600kcmil - #4 500 in-lbs 6 0LS45572Z LPBC42
420 3 1 1/2" Hex 600kcmil - #4 500 in-lbs 1 1/2" Hex 600kcmil - #4 500 in-lbs 6 0LS45573Z LPBC43
510 3 AL 2 5/16" Hex 250kcmil - #6 275 in-lbs 2 5/16" Hex 250kcmil - #6 275 in-lbs 9 0LS33203Z 0LCH1333Z
620 1
AL
2 5/16" Hex 350kcmil - #4 275 in-lbs 2 5/16" Hex 350kcmil - #4 275 in-lbs 7 0LS51291Z LPBC51
620 2 2 5/16" Hex 350kcmil - #4 275 in-lbs 2 5/16" Hex 350kcmil - #4 275 in-lbs 7 0LS51292Z LPBC52
620 3 2 5/16" Hex 350kcmil - #4 275 in-lbs 2 5/16" Hex 350kcmil - #4 275 in-lbs 7 0LS51293Z LPBC53
760 1
AL
2 3/8" Hex 500kcmil - #4 375 in-lbs 2 3/8" Hex 500kcmil - #4 375 in-lbs 7 0LS53011Z LPBC51
760 2 2 3/8" Hex 500kcmil - #4 375 in-lbs 2 3/8" Hex 500kcmil - #4 375 in-lbs 7 0LS53012Z LPBC52
760 3 2 3/8" Hex 500kcmil - #4 375 in-lbs 2 3/8" Hex 500kcmil - #4 375 in-lbs 7 0LS53013Z LPBC53
Note: AL = Aluminum / CU = Copper
Note: *Covers sold separately
© 2022 Littelfuse, Inc. 197 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
POWR-BLOKS
Distribution Block and Splicer Block Outline Drawings
Figure 1
Dimensions Inches (mm)
2-pole 3-pole
Figure 2
Figure 3
1-pole 2-pole 3-pole
3-pole
6
Littelfuse.com 198 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
POWR-BLOKS
Distribution Block and Splicer Block Outline Drawings
Dimensions Inches (mm)
Figure 5
1-pole 2-pole 3-pole
Figure 6
1-pole 2-pole 3-pole
Figure 4
1-pole 2-pole 3-pole Adder
© 2022 Littelfuse, Inc. 199 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
POWR-BLOKS
Distribution Block and Splicer Block Outline Drawings
Dimensions Inches (mm)
Figure 8
1-pole 3-pole
Figure 9
1-pole 2-pole 3-pole
Figure 7
1-pole 2-pole 3-pole
6
Littelfuse.com 200 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
POWR-BLOKS
Distribution Block and Splicer Block Outline Drawings
Dimensions Inches (mm)
CHICAGO, ILLINOIS 60631
3RD ANGLE
PROJECTION
A1 OL-for datasheet
Littelfuse
® REVISION DRWG NO.
TITLE
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
MYORK 12/7/2017
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SHEET 1 OF 1
SCALE
0LD1440 & 0LS1330 Series for datasheet
NTS
REVISION
REV DATE DESCRIPTION
A1 12/7/17 CREATED FOR DATASHEET UPDATE MRY
7.11
[0.28]
35.98
[1.42]
5.03
[0.20]
58.12
[2.29]
49.07
[1.93]
R.10 X .06
[2.6 X .15]
THRU TYP.
21.46
[0.85]
14.20
[0.56]
16.13
[0.64]
37.59
[1.48]
48.39
[1.91]
69.85
[2.75]
10.73
[0.42] 10.73
[0.42]
10.73
[0.42]
41.20
[1.62]
15.21
[0.60]
17.78
[0.70]
1-pole 2-pole 4-pole
1-pole 2-pole 4-pole
Figure 10
© 2022 Littelfuse, Inc. 201 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
Features/Benefits
• Global part meeting UL standards
• Space saving design
• Integrated touch-safe cover to increase safety
• IP20 protection rating
• Mounts to DIN rail or panels
• Reliable brass connections for excellent continuity
in a smaller design
Specifications
Voltage Rating UL: 600 VAC/VDC
Ampere Rating 80 – 335 A
Material Thermoplastic
Connector GDBxxxx: Brass
GDBAxxxx: Aluminum (Tin Plated)
Flammability Rating UL94 V-0
Approvals UL Recognized (File: E309688, E171395)
UL Listed (File: E482231)
CSA Certified (File: 700111)
Operating Temperature -40°C to +90°C
Storage Temperature -40°C to +100°C
Relative Humidity 50% @ 40°C, 90% @ 20°C
Environmental RoHS compliant
Description
POWR-BLOKS Global Distribution Blocks add safety and
mounting versatility to our distribution block solutions. The
Global Distribution Blocks are approved to UL standards.
The Global Distribution Blocks are IP20 finger safe to reduce
the risk of contact and eliminate the need for block or panel
covers. Installation is quick and easy, all blocks can be
mounted on DIN rail or to the panel.
Electrical Specifications
CATALOG/
ORDERING
NUMBER
POLES
AMPS
WIRE RANGE OVERCURRENT PROTECTION
FUSE REQUIRED SCCR IN
RMS
SYM
AMPS
AGENCY
APPROVALS LINE
CONNECTION LOAD CONNECTION
LINE OPENINGS
PER POLE
OPENINGS
PER POLE LOAD CLASS J
(JTD_ID)
Class T
(JLLN,
JLLS)
Class RK1
(LLNRK,
LLSRK, KLNR,
KLSR)
Class RK5
(FLNR, FLSR,
IDSR)
CLASS G
(SLC)
CLASS CC
(CCMR,
KLDR,
KLKR)
UR
cURus
UL
CSA
GDB60801Z 1 80 1 #8 - #4 6
#8 - #4
80 - - - - - 100,000 • #10 - #14 - - - - -
GDB61151Z 1 115 1
#8 - #2
6 #14 - #4 125 - - - - - 100,000 • #10 - #6 - - - - -
GDB61153Z 3 115 1 #8 - #2 6 #14 - #4 125 - - - - - 100,000 •
GDBAD211Z 1 115 1 #14 - #2 1 #14 - #2 175 225 100 60 60 30 100,000 • •
GDBAD241Z 1 115 1 #10 - #2 4 #14 - #10 125 200 100 30 60 30 65,000 • •
GDB61601Z 1 160 1 #8 - 2/0 6 #14 - #4 175 - - - - - 100,000 •
GDB61753Z 3 175 1 #8 - 2/0 6 #14 - #4 175 - - - - - 100,000 •
GDBAD421Z 1 200 1 #8 - 3/0 1 #8 - 3/0 225 225 200 60 60 30 100,000 • •
GDBAP421Z 1 200 1 #8 - 3/0 1 #8 - 3/0 225 225 200 60 60 30 100,000 • •
GDBAD451Z 1 200 1
#8 - 3/0
4
#8 - #2 225 225 200 60 60
30 100,000 • • #8 - 3/0 #14 - #8 100 110 100 30 60
GDBAP451Z 1 200 1
#8 - 3/0
4
#8 - #2 225 225 200 60 60
30 100,000 • • #8 - 3/0 #14 - #8 100 110 100 30 60
GDB63101Z 1 310 1 3/0 - 350
kcmil 11
#14 - #2
#14 - #6 350 - - - - - 100,000 •
#14 - #8
GDBAD741Z 1 335 1
#6 - 400
kcmil 8 #14 - #2 - - - - - - 10,000 • •
#14 - 3/0
Web Resources
For additional information visit Littelfuse.com/gdb
6
Littelfuse.com 202 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
Mechanical Specification
CATALOG/
ORDERING
NUMBER
POLES
AMP
RATING
PER POLE
(UL)
LINE CONNECTION LOAD CONNECTION
OPENINGS
PER POLE
OPENING
DIAMETER
SCREW
TYPE
WIRE
RANGE
TORQUE
LB-IN (NM)
OPENINGS
PER POLE
OPENING
DIAMETER
SCREW
TYPE
WIRE
RANGE
TORQUE
LB-IN (NM)
GDB60801Z 1 80 1 0.28 in
(7.0 mm) Slotted #8 – #4
(Cu) 13.5 (1.5) 6
2x 0.28 in
(2x 7.0 mm) Slotted
#8 - #4
(Cu) 13.5 (1.5)
4x 0.18 in
(4x 4.5 mm)
#10 - #14
(Cu) 7.2 (0.8)
GDB61151Z 1 115 2 0.39 in
(10.0 mm) Hex 4 mm
#8 – #2
(Cu) 31 (3.5) 6 0.28 in
(7.0 mm) Slotted #14 – #4
(Cu) 17.5 (2) #10 – #6
(Cu)
GDB61153Z 3 115 1 0.39 in
(10.0 mm) Hex 4mm #8 - #2 (Cu) 31 (3.5) 6 0.25 in
(6.5 mm) Hex 3mm #14 - #4
(Cu) 17.5 (2)
GDBAD211Z 1 115 1 0.323 in
(8.2 mm) Hex 4 mm #14 - #2
(Cu/Al)
35 (4.0) #14 - #10
40 (4.5) #8
45 (5.1) #6 - #4
50 (5.6) #3 - #2
1 0.323 in
(8.2 mm) Hex 4 mm #14 - #2
(Cu/Al)
35 (4.0) #14 - #10
40 (4.5) #8
45 (5.1) #6 - #4
50 (5.6) #3 - #2
GDBAD241Z 1 115 1 0.312 in
(7.9 mm) Hex 4 mm #14 - #2
(Cu/Al)
35 (4.0) #14 - #10
40 (4.)5 #8
45 (5.1) #6 - #4
50 (5.6) #3 - #2
4 0.159 in
(4.0 mm) Hex 2 mm #14 - #10
(Cu/Al) 7 (0.8)
GDB61601Z 1 160 1 0.49 in
(12.5 mm) Hex 5mm #8 - 2/0
(Cu) 35.5 (4) 6 0.28 in
( 7.0 mm) Slotted #14 - #4
(Cu) 17.5 (2.0)
GDB61753Z 3 175 1 0.47 in
(12.0 mm) Hex 5mm #8 - 2/0
(Cu) 35.5 (4) 6 0.25 in
( 6.5 mm) Hex 3mm #14 - #4
(Cu) 17.5 (2.0)
GDBAD421Z 1 200 1 0.531 in
(13.5 mm) Hex 6mm #14 - 3/0
(Cu/Al)
50 (5.6) #14 - #10
180 (20.3) #8 - 3/0 1 0.531 in
(13.5 mm) Hex 6mm #14 - 3/0
(Cu/Al)
50 (5.6) #14 - #10
180 (20.3) #8 - 3/0
GDBAP421Z 1 200 1 0.531 in
(13.5 mm) Hex 6mm #14 - 3/0
(Cu/Al)
50 (5.6) #14 - #10
180 (20.3) #8 - 3/0 1 0.531 in
(13.5 mm) Hex 6mm #14 - 3/0
(Cu/Al)
50 (5.6) #14 - #10
180 (20.3) #8 - 3/0
GDBAD451Z 1 200 1 0.531 in
(13.5 mm) Hex 6mm #14 - 3/0
(Cu/Al)
50 (5.6) #14 - #10
180 (20.3) #8 - 3/0 4 0.313 in
(7.9mm) Hex 5mm #14 - #2
(Cu/Al)
40 (4.5) #14 - #10
50 (5.6) #8 - #2
GDBAP451Z 1 200 1 0.531 in
(13.5 mm) Hex 6mm #14 - 3/0
(Cu/Al)
50 (5.6) #14 - #10
180 (20.3) #8 - 3/0 4 0.313 in
(7.9mm) Hex 5mm #14 - #2
(Cu/Al)
40 (4.5) #14 - #10
50 (5.6) #8 - #2
GDB63101Z 1 310 1 0.75 in
(19.0 mm) Hex 8mm 3/0 - 350
kcmil (Cu) 230 (26.0) 11
2x 0.35 in
(2x 9.0mm)
Slotted
#14 - #2
(Cu) 31 (3.5)
5x 0.25 in
(5x 6.5mm)
#14 - #6
(Cu)
18 (2.0)
4x 0.21 in
(4x 5.3mm)
#14 - #8
(Cu)
GDBAD741Z 1 335 1 0.516 in
(13.1 mm)
Hex
8mm & 6mm
#14 - 400
kcmil
(Cu/Al)
40 (4.5)#14 - #8
80 (9.0) #6 - #2
8 0.375 in
(9.5 mm) Hex 5mm #14 - #2
(Cu/Al)
40 (4.5) #14 - #8
120 (13.6) #1 - #3/0
275 (31.10 #6 - #1/0
375 (42.4) 2/0 - 400
kcmil
80 (9.0) #6 - #2
© 2022 Littelfuse, Inc. 203 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
4x Ø 0.18
(4x Ø 4.5)
3x Ø 0.24
(3x Ø 6)
Ø 0.22
(Ø 5.5)
0.08
(2)
0.75
(19)
2.58
(65.5)
1.06
(27) 0.20
(5)
0.16
(4)
0.24
(6)
0.26
(6.5)
0.39
(10)
1.22
(31.1)
1.84
(46.8)
0.11
(2.7)
1.38
(35)
0.69
(17.5)
0.75
(19)
0.20
(5.0)
Ø 0.22
(Ø 5.5)
1.80
(45.8)
0.24
(6.0) 0.26
(6.5)
1.06
0.20 (27) (5.0)
0.16
(4.0)
2.9
(74)
0.53
(13.5)
1.67
(42.3) 1.38
(35)
0.69
(17.5) 0.05
(1.3)
0.39
(10)
Ø 0.22
(Ø 5.5)
GDB60801Z
GDB61151Z
Dimensions Inches (mm)
0.98
(25)
3.62
(92)
3.16
(80.3)
1.38
(35)
0.08
(2.0)
2.0
(50)
1.4
(35)
0.24
(6.0)
GDB61601Z
6
Littelfuse.com 204 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
1.50
(38)
2.80
(71)
3.14
(80)
0.54
(13.8)
1.69
(43)
2.07
(52.5)
0.20
(5.2)
2.07
(52.5)
2.28
(58)
0.20
(5.2)
0.43
(11.2)
GDB61153Z
GDB61753Z
Dimensions Inches (mm)
1.75
(44.5)
1.93
(49)
0.85
(21.5)
0.09
(2.3)
3.74
(95)
3.34
(84.8)
0.69
(17.5)
0.98
(25)
0.09
(2.2)
1.38
(35)
GDB63101Z
© 2022 Littelfuse, Inc. 205 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
GDBAD211Z
GDBAD241Z
Dimensions Millimeters (in)
6
Littelfuse.com 206 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
GDBAD421Z
Dimensions Millimeters (in)
© 2022 Littelfuse, Inc. 207 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
GDBAP421Z
Dimensions Millimeters (in)
6
Littelfuse.com 208 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
Dimensions Millimeters (in)
GDBAD451Z
© 2022 Littelfuse, Inc. 209 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
GDBAP451Z
Dimensions Millimeters (in)
6
Littelfuse.com 210 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
GDB SERIES TOUCH-SAFE POWR-BLOKS
Global Distribution Blocks
GDBAD741Z
Dimensions Millimeters (in)
© 2022 Littelfuse, Inc. 211 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
Specifications
Voltage Rating 500 Vac, 125 Vdc
Ampere Rating 15 A
Fuse Type 1
⁄4” x 11
⁄4”
Fuse Clips Tin-plated brass
Wire Black 18 AWG, 150˚ C Stranded
Molded Body Single piece thermoplastic
Flammability Rating UL94 V-0
Approvals UL Recognized (File: E14721)
Environmental RoHS complaint, Lead (Pb) free
Storage Temperature -40˚ C to 80˚ C
Operating Temperature -55˚ C to 125˚ C
Ordering Information
Web Resources
For more information, visit: littelfuse.com/150322
CATALOG NUMBER ORDERING NUMBER STANDARD PACK
150322 01500322H 100 PIECES
Dimensions mm (inches)
Recommended Fuses
3AG (312, 313 Series) ....................................................... 34
3AB (314, 326, 505 Series)............................................... 33
Description
The 150322 is a 500 Vac/125 Vdc rated inline fuse
holder ideal for applications where supplemental
protection is needed, such as lighting ballasts and
power supplies. 8-inch pre-stripped wire leads and
fuse clips come preassembled for quick installation.
Features/Benefits
• Single piece body minimizes component count
• High voltage rating accommodates many
power applications
• Wire leads are pre-attached to fuse clips for
quick assembly
• Single piece molded body
• UL Recognized
Twist-Lock
155 Series
In-Line Mount
32 V 3AG, SFE
Heavy-Duty Bayonet
155 Series
In-Line Mount
32 V 3AG
Special Type
150 Series
In-Line Mount
250 V 2AG, 5x20mm
Additional In-Line Glass Fuse Holders
Dimensions Inches
IN-LINE GLASS FUSE HOLDERS
150322
6
Littelfuse.com 212 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
TO
LOAD
ELECTRICAL TAPE
TO
LOAD
TO
SOURCE
ELECTRICAL TAPE
Description
Recently redesigned, the Littelfuse 600 VAC/VDC in-line
watertight fuse holders allow maximum protection for high
humidity and corrosive environments. The fuse holders are
designed to be touch-safe and flexible for use in a variety
of applications. See the list below for the redesigned part
numbers.
Applications
• Street lighting and parking lot lighting
• Sports lighting and various outdoor illuminated signs
• Boat electrical circuits, tractors/yard equipment and
general outdoor circuit protection (such as traffic
signals, alley lighting and electric wheelchairs)
Specifications
Voltage rating 600 VAC/VDC
Ampere rating up to 30 A
Interrupting rating 200 kA rms symmetrical (with Class CC fuses)
Approvals LEB/LEX series UL Recognized Miscellaneous
Fuse holder per UL UL 4248 (File: E14721)
CSA Certified per C22.2, No. 39 (File: LR7316)
LEC/LEY series UL Listed Class CC Branch Circuit
Fuse holder per UL 512 (File: E14721)
CSA Certified per C22.2, No. 39 (File: LR7316)
Features/Benefits
• Design increases safety by individual device
disconnection for easy servicing, eliminating shock risk
• Increases efficiency by preventing faulted ballast from
severely damaging fixture or device
• Watertight seal
• Variety of terminations available for flexible design
• Insulating boots available for harsh environments
Recommended Fuses
LEB/LEX series:
Accepts all Littelfuse Midget and Class CC series fuses
CCMR............................................................................... 27
KLDR, KLKR...................................................................... 28
BLF, BLN, FLM, FLQ, KLK, KLKD ..................................... 30
LEC/LEY series:
Accepts only Littelfuse Class CC fuses
CCMR............................................................................... 27
KLDR, KLKR...................................................................... 28
Web Resources
Download CAD drawings, dimensions and other technical
information: littelfuse.com/in-line
IMPROVED
Look for these part numbers featuring our
improved design
• Better surface area for ergonomic comfort, improved grip
and better torque
• More pronounced seating – automatically seats as user
begins twisting
• Chamfered edges for additional installation comfort
BASE PART
NUMBER
PREVIOUS ORDERING
NUMBER
NEW ORDERING
NUMBER
LEB-AA 0LEB00AAX 0LEB00AAXK
LEB-AA-S 0LEB0AASX 0LEB0AASXK
LEB-AB 0LEB00ABX 0LEB00ABXK
LEB-AYC-S 0LEBAYCSX 0LEBAYCSXK
LEB-BB 0LEB00BBX 0LEB00BBXK
LEB-JJ 0LEB00JJX 0LEB00JJXK
LEB-JJ-S 0LEB0JJSX 0LEB0JJSXK
LEB/LEX LEC/LEY
IN-LINE WATERTIGHT FUSE HOLDERS
© 2022 Littelfuse, Inc. 213 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
IN-LINE WATERTIGHT FUSE HOLDERS
Recommended Crimping Tools
The following crimping tools or equivalents may be used
on either the non-breakaway or breakaway watertight
in-line fuse holders.
TERMINAL SIZE T&B PART NUMBER BURNDY PART
NUMBER
A WT161M –
B WT161M MR4C
C M5-GREY Hypress Y34A
D M5-BROWN Hypress Y34A
4.5"
10.3"
( ASSEMBLED LENGTH )
5.4"
( ASSEMBLED LENGTH )
4.5"
9.3"
( ASSEMBLED LENGTH )
WPB1 BOOT
(OPTIONAL)
WPB1 BOOT
(OPTIONAL)
INSULATING BOOT (STANDARD)
INSULATING BOOT (STANDARD)
4.2"
4.5"
9.3"
( ASSEMBLED LENGTH )
10.3" ( ASSEMBLED LENGTH )
5.3"
( ASSEMBLED LENGTH )
Dimensions Inches
1-Pole
1-Pole Breakaway
2-Pole
2-Pole Breakaway
A & B Crimp Terminal
C & D Crimp Terminal
J Terminal
Y Terminal
Insulating Boots
• Molded from engineering-grade thermoplastics which
provide high resistance to corrosive environments
• Standard with all breakaway style fuse holders
• For watertight protection of non-breakaway Y-pole
termination, order one WPB1 and one WPB3 boot
ORDERING NUMBER TERMINAL TYPE
WPB1 A, B, C, D, J
WPB3 Y
SERIES DESCRIPTION
LEB One-pole in-line fuse holder for Midget and Class CC fuses
LEC One-pole in-line fuse holder for Class CC fuses
LET One-pole in-line fuse holder with
permanently installed solid neutral
LEX Two-pole in-line fuse holder for Midget and Class CC fuses
LEY Two-pole in-line fuse holder for Class CC fuses
Ordering Information
To order Littelfuse in-line fuse holders by part number,
refer to the charts on the next page.
LEB - AA - S
Littelfuse Series
Load Side/Terminal Size
Breakaway Feature
Line Side/Terminal Size
6
Littelfuse.com 214 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
IN-LINE WATERTIGHT FUSE HOLDERS
SINGLE POLE DOUBLE POLE LOAD TERMINAL SELECTION LINE TERMINAL SELECTION
STANDARD
PART
NUMBER
BREAKAWAY
PART
NUMBER
STANDARD
PART
NUMBER
BREAKAWAY
PART
NUMBER
TERMINAL
TYPE
LOAD
TERMINAL
WIRE SIZE
RANGE
NUMBER
OF WIRES
PER
TERMINAL
SOLID
WIRE
STRANDED
WIRE
TERMINAL
TYPE
LINE
TERMINAL
WIRE SIZE
RANGE
NUMBER
OF WIRES
PER
TERMINAL
SOLID
WIRE
STRANDED
WIRE
LEB-AA-K
LEC-AA
LEB-AA-SK
LEC-AA-S
LEX-AA
LEY-AA
LEX-AA-S
LEY-AA-S
Copper
Crimp
#12 to #8
#12
1
2 •
• •
• Copper
Crimp
#12 to #8
#12
1
2 •
• •
•
LEB-AB-K
LEC-AB
LEB-AB-S
LEC-AB-S
LEX-AB
LEY-AB
LEX-AB-S
LEY-AB-S
Copper
Crimp
#12 to #8
#12
1
2 •
• •
• Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
LEB-AC
LEC-AC —
— LEX-AC
LEY-AC — Copper
Crimp
#12 to #8
#12
1
2 •
• •
• Copper
Crimp
#8
#4
2
1 •
— •
•
LEB-AD
LEC-AD —
— LEX-AD
LEY-AD —
— Copper
Crimp
#12 to #8
#12
1
2 •
• •
• Copper
Crimp
#6
#2
2
1 •
— •
•
LEB-AJ
LEC-AJ
LEB-AJ- S
LEC-AJ-S — — Copper
Crimp
#12 to #8
#12
1
2 •
• •
• Copper
Set-Screw
#12 to #8
#10 to #2
1
1 •
— —
•
LEB-AYC
LEC-AYC
LEB-AYC-SK
LEC-AYC-S
LEX-AYC
LEY-AYC
LEX-AYC-S
LEY-AYC-S
Copper
Crimp
#12 to #8
#12
1
2 •
• •
•
"Y" Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1 •
— —
•
LEB-BA
LEC-BA
LEB-BA-S
LEC-BA-S
LEX-BA
LEY-BA
LEX-BA-S
LEY-BA-S
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
Copper
Crimp
#12 to #8
#12
1
2 •
• •
•
LEB-BB-K
LEC-BB
LEB-BB-S
LEC-BB-S
LEX-BB
LEY-BB
LEX-BB-S
LEY-BB-S
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
LEB-BC
LEC-BC —
— LEX-BC
LEY-BC —
— Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
Copper
Crimp
#8
#4
2
1 •
— •
•
LEB-BD
LEC-BD —
— LEX-BD
LEY-BD —
— Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
Copper
Crimp
#6
#2
2
1 •
— •
•
LEB-BJ
LEC-BJ
LEB-BJ-S
LEC-BJ-S —
— —
— Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
Copper
Set-Screw
#12 to #8
#10 - #2
1
1 •
— —
•
LEB-BYC
LEC-BYC
LEB-BYC-S
LEC-BYC-S
LEX-BYC
LEY-BYC
LEX-BYC-S
LEY-BYC-S
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
"Y" Type
Copper
Set-Screw
#12 to #8
#10 - #2
1
1 •
— —
•
LEB-CA
LEC-CA —
— LEX-CA
LEY-CA —
— Copper
Crimp
#8
#4
2
1 •
— •
• Copper
Crimp
#12 to #8
#12
1
2 •
• •
•
LEB-CB
LEC-CB —
— LEX-CB
LEY-CB —
— Copper
Crimp
#8
#4
2
1 •
— •
• Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
LEB-CC
LEC-CC —
— LEX-CC
LEY-CC —
— Copper
Crimp
#8
#4
2
1 •
— •
• Copper
Crimp
#8
#4
2
1 •
— •
•
LEB-CD
LEC-CD —
— LEX-CD
LEY-CD —
— Copper
Crimp
#8
#4
2
1 •
— •
• Copper
Crimp
#6
#2
2
1 •
— •
•
LEB-CJ
LEC-CJ —
— LEX-CJ
LEY-CJ —
— Copper
Crimp
#8
#4
2
1 •
— •
• Copper
Set-Screw
#12 to #8
#10 - #2
1
1 •
— •
•
LEB-CYC
LEC-CYC —
— LEX-CYC
LEY-CYC —
— Copper
Crimp
#8
#4
2
1 •
— •
•
"Y" Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1 •
— —
•
LEB-DA
LEC-DA —
— LEX-DA
LEY-DA —
— Copper
Crimp
#6
#2
2
1 •
— •
• Copper
Crimp
#12 to #8
#12
1
2 •
• —
•
LEB-DB
LEC-DB —
— LEX-DB
LEY-DB —
— Copper
Crimp
#6
#2
2
1 •
— •
• Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
LEB-DC
LEC-DC —
— LEX-DC
LEY-DC —
— Copper
Crimp
#6
#2
2
1 •
— •
• Copper
Crimp
#8
#4
2
1 •
— •
•
LEB-DD
LEC-DD —
— LEX-DD
LEY-DD —
— Copper
Crimp
#6
#2
2
1 •
— •
• Copper
Crimp
#6
#2
2
1 •
— •
•
LEB-DJ
LEC-DJ —
— LEX-DJ
LEY-DJ —
— Copper
Crimp
#6
#2
2
1 •
— •
• Copper
Set-Screw
#12 to #8
#10 - #8
2
1 •
— •
•
LEB-DYC
LEC-DYC —
— LEX-DYC
LEY-DYC —
— Copper
Crimp
#6
#2
2
1 •
— •
•
"Y" Type
Copper
Set-Screw
#12 to #8
#10 to #8
1
1 •
— —
•
LEB-JJ-K
LEC-JJ
LEB-JJ-SK
LEC-JJ-S
LEX-JJ
LEY-JJ
LEX-JJ-S
LEY-JJ-S
Copper
Set-Screw
#12 to #8
#10 to #2
1
1 •
— —
• Copper
Set-Screw
#12 to #8
#10 to #2
1
1 •
— —
•
LEB-JYC
LEC-JYC
LEB-JYC-S
LEC-JYC-S —
— —
— Copper
Set-Screw
#12 to #8
#10 to #2
1
1 •
— —
•
"Y" Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1 •
— —
•
Ordering Information (1-Pole LEB/LEC and 2-Pole LEX/LEY for Class CC and Midget Fuses)
© 2022 Littelfuse, Inc. 215 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
IN-LINE WATERTIGHT FUSE HOLDERS
STANDARD
PART
NUMBER
BREAKAWAY
PART
NUMBER
FUSE
TYPE
LOAD TERMINAL SELECTION LINE TERMINAL SELECTION
TERMINAL
TYPE
LOAD
TERMINAL
WIRE SIZE
RANGE
NUMBER
OF WIRES
PER
TERMINAL
SOLID
WIRE
STRANDED
WIRE
TERMINAL
TYPE
LINE
TERMINAL
WIRE SIZE
RANGE
NUMBER
OF WIRES
PER
TERMINAL
SOLID
WIRE
STRANDED
WIRE
LET-AA LET-AA-S Solid
Neutral
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
LET-AB LET-AB-S Solid
Neutral
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
LET-AYC LET-AYC-S Solid
Neutral
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
“Y” Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
LET-BA LET-BA-S Solid
Neutral
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
Copper
Crimp
#12 to #8
#12
1
2
•
•
•
•
LET-BB LET-BB-S Solid
Neutral
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
Copper
Crimp
#10
#6
#4
2 •
•
—
•
•
• 1
1
LET-BYC LET-BYC-S Solid
Neutral
Copper
Crimp
#10
#6
#4
2
1
1
•
•
—
•
•
•
“Y” Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
LET-JJ LET-JJ-S Solid
Neutral
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
LET-JYC LET-JYC-S Solid
Neutral
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
“Y” Type
Copper
Set-Screw
#12 to #8
#10 to #2
1
1
•
—
—
•
Ordering Information (Terminals)
TERMINAL DESIGNATION TERMINAL DESCRIPTION NUMBER OF WIRES
PER TERMINAL WIRE RANGE SOLID
WIRE
STRANDED
WIRE
A Copper Crimp 1 #12-#8 • •
2 #12 • •
B Copper Crimp
2 #10 • •
1 #6 • •
1 #4 — •
C Copper Crimp 2 #8 • •
1 #4 — •
D Copper Crimp 2 #6 • •
1 #2 — •
J Copper Set-Screw 1 #12-#8 • —
1 #10-#2 — •
Y (2 terminals) “Y” Style Copper Set-Screw 1 #12-#8 • —
1 #10-#2 — •
Ordering Information (Solid Neutral LET Fuse Holders)
6
Littelfuse.com 216 © 2022 Littelfuse, Inc.
Blocks and Holders
Fuse Blocks and Holders
6
IN-LINE WATERTIGHT FUSE HOLDERS
Two-Pole Breakaway Holder
Description
New Littelfuse LEXT-YY-S and LEX-YYC-S series breakaway
fuse holders meet state and federal highway commission
safety standards requiring fuse holders to readily disconnect
from power in case of a pole knockdown.
The breakaway feature consists of a receptacle permanently
attached to the power line and a fuse holder with matching
terminals. If a knockdown occurs, the parts separate, leaving
the energized conductor recessed and unexposed.
Applications
• Street lighting
• Marinas
• Travel trailer parks
• Physically strained fuse holders applications
Features/Benefits
• LEXT-YY version has a permanently installed “neutral”
slug to prevent the neutral from accidentally being fused
• LEX-YYC version allows for fusing of line-to-line loads or
other applications requiring two fuses to disconnect
under strain
• Fiberglass polymer body resists damage from impact
• Four “Y” type set-screw terminals accommodate a wide
range of solid and stranded copper conductors
• O-ring and terminal boots form watertight seal,
preventing leakage
Specifications
Part numbers LEXT-YY-S (Solid neutral)
LEX-YYC-S
Voltage Rating 600 Vac/Vdc
Ampere Rating 30 A
Interrupting Rating 200 kA with Class CC Fuses
Y Terminals Tin Plated Copper w/ set screws
Wire Size 1 solid #12 to #8 or
1 stranded #10 to #2
Approvals UL Recognized (File: E14721)
CSA Certified (File: LR7316)
Recommended Fuses
Accepts all Littelfuse Midget and Class CC series fuses
CCMR............................................................................... 27
KLDR, KLKR...................................................................... 28
BLF, BLN, FLM, FLQ, KLK, KLKD ..................................... 30
Four WPB3 insulating boots come standard with the
LEXT-YY-S and LEX-YY-C-S fuse holders. Molded from
non-conductive engineering grade thermoplastic to deliver
a watertight seal in corrosive environments, they can be
trimmed to the specific conductor size insuring a snug fit.
Web Resources
Additional technical information:
littelfuse.com/in-line
ORDERING
NUMBER
FUSE
TYPE
LOAD TERMINAL SELECTION LINE TERMINAL SELECTION
TERMINAL
TYPE
LOAD
TERMINAL
WIRE SIZE
RANGE
NUMBER OF
WIRES PER
TERMINAL
SOLID
WIRE
STRANDED
WIRE
TERMINAL
TYPE
LINE
TERMINAL
WIRE SIZE
RANGE
NUMBER OF
WIRES PER
TERMINAL
SOLID
WIRE
STRANDED
WIRE
LEXTYYS LEXT0YYSX Midget
Class CC
“Y” type
Copper
Set-Screw
#12 to #8 1 • — “Y” type
Copper
Set-Screw
#12 to #8
#10 to #2
1 • —
#10 to #2 1 — • 1 — •
LEXYYCS 0LEXYYCSX Midget
Class CC
“Y” type
Copper
Set-Screw
#12 to #8
#10 to #2
1 • — “Y” type
Copper
Set-Screw
#12 to #8
#10 to #2
1 • —
1 — • 1 — •
Ordering Information
© 2022 Littelfuse, Inc. 217 Littelfuse.com
Blocks and Holders
Fuse Blocks and Holders
IN-LINE WATERTIGHT FUSE HOLDERS
Two-Pole Breakaway Holder
4 9/16"
( ASSEMBLED LENGTH )
11 1/4"
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
4 9/16"
( ASSEMBLED LENGTH )
11 1/4"
( ASSEMBLED LENGTH )
5 1/8"
( ASSEMBLED LENGTH )
PERMANENT
NEUTRAL SLUG
LEXT-YY-S
LEX-YY-C-S
Dimensions Inches
6
Littelfuse.com 218 © 2022 Littelfuse, Inc.
Section Overview
The Littelfuse switch products, designed for performance and
reliability, come in a variety of voltage and amperage offerings
to accommodate a range of applications. They are ideal for many
markets including solar/PV, OEM, energy storage, oil and gas,
railway, and uninterruptable power supply (UPS).
SWITCH PRODUCTS
Dc Disconnect Switches LS7 Series (1500 V)..................................219
Dc Disconnect Switch LS6 Series (500 V) ...................................... 227
Dc Disconnect Switch LS6 Series (1000 V) .................................... 231
Dc Disconnect Switch LS6R Series (1500 V).................................. 235
Table of Contents
© 2022 Littelfuse, Inc. 219 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
1500 V Dc • 250 A
Description
The Littelfuse LS7R dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow of
current safely to prevent shock hazards when trying to isolate
circuits or repair systems. It is a 1500 V dc disconnect for
ungrounded systems.
Features/Benefits
The patented operation system minimizes damage
caused by arcs upon disconnection to increase product
reliability and longevity Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for
added safety The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the
product’s lifespan The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions
Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
Electrical vehicle chargers
Specifications
UL 98B Standards
Total Voltage Rating 1500 V dc
Amperage Rating 250 A
SCCR Rating 10 kA
Ambient Temperature -20 to 50 °C (-4 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current
DC21B Rating 250 A / 1500 V dc
Other Characteristics
Power Losses at 250 A 8.26 watts
Maximum Busbar
Connection Range 1 bar x 5 mm (.20”) H x 32 mm (1.25”) L
Number of Circuits/Switches 1
Tightening Torque 159 lbf-in (18 N•m)
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
Recommended Accessories
Panel Handle with Shaft LDSSA11
For closed panel door access
Direct Handle LDSSI11
For open panel door access
Auxiliary Contact LDMAU11
Remotely indicates switch position
Spacers LDMEL11
Increase distance between switch and mounting plate
REACH
LS7R0250 1500 V DC SERIES
Littelfuse.com 220 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
LS7R0250 1500 V DC SERIES
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M*
M**
M***
Busbar
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M*
M**
M***
Busbar
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M*
M**
M***
Busbar
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
Part Numbering System
LS7R 0250 2P S 00L
Configuration Type
Amperage Terminal Measurement
Series UL product
Ordering Information
DC DISCONNECT SWITCH
PART NUMBER VOLTAGE AMPERAGE INSTALLATION CONFIGURATION SINGLE UNIT WEIGHT
LS7R02502PS00L 1500 V dc 250 A Ungrounded Type 2P 3 kg
Dimensions Millimeters (Inches)
Dc Disconnect Switch Switch - Side View Panel Handle with Shaft
LDSSA11
Switch - 3D Installation View Busbar
QTY
COPPER BUSBAR
M (TERMINAL TORQUE)
(+5 % | -10 %)
COPPER BUSBAR
H MAX
(CU)
COPPER BUSBAR
L MAX
(CU)
N•M LBF•INCH MM INCH MM INCH
1 M10 18 159 5 13/64 32 1 1/4
MINIMUM BUSBAR SECTION
M ACCORDING TO UL 98B
M (+5 % | -10 %)
N•M LBF•INCH
* T20 M4 1.2 10.6
** — M4 1.5 13.3
*** Allen M5 1.5 13.3
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M**
M***
1
© 2022 Littelfuse, Inc. 221 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
LS7R0320 1500 V DC SERIES
1500 V Dc • 320 A
Description
The Littelfuse LS7R dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow of
current safely to prevent shock hazards when trying to isolate
circuits or repair systems. It is a 1500 V dc disconnect for
ungrounded systems.
Features/Benefits
The patented operation system minimizes damage
caused by arcs upon disconnection to increase product
reliability and longevity
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for
added safety
The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the
product’s lifespan
The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters
Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection UPS: switching and isolation of batteries
Electrical vehicle chargers
Specifications
UL 98B Standards
Total Voltage Rating 1500 V dc
Amperage Rating 320 A
SCCR Rating 10 kA
Ambient Temperature -20 to 50 °C (-4 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current
DC21B Rating 320 A / 1500 V dc
Other Characteristics
Power Losses at 320 A 13.55 watts
Maximum Busbar
Connection Range 1 bar x 5 mm (.20”) H x 40 mm (1.58”) L
Number of Circuits/Switches 1
Tightening Torque 159 lbf-in (18 N•m)
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
Recommended Accessories
Panel Handle with Shaft LDSSA11
For closed panel door access
Direct Handle LDSSI11
For open panel door access
Auxiliary Contact LDMAU11
Remotely indicates switch position
Spacers LDMEL11
Increase distance between switch and mounting plate
REACH
Littelfuse.com 222 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
LS7R0320 1500 V DC SERIES
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M*
M**
M***
Busbar
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M*
M**
M***
Busbar
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M*
M**
M***
Busbar
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
Part Numbering System
LS7R 0320 2P S 00L
Configuration Type
Amperage Terminal Measurement
Series UL product
Ordering Information
DC DISCONNECT SWITCH
PART NUMBER VOLTAGE AMPERAGE INSTALLATION CONFIGURATION SINGLE UNIT WEIGHT
LS7R03202PS00L 1500 V dc 320 A Ungrounded Type 2P 3 kg
Dimensions Millimeters (Inches)
Dc Disconnect Switch Switch - Side View Panel Handle with Shaft
LDSSA11
Switch - 3D Installation View Busbar
QTY
COPPER BUSBAR
M (TERMINAL TORQUE)
(+5 % | -10 %)
COPPER BUSBAR
H MAX
(CU)
COPPER BUSBAR
L MAX
(CU)
N•M LBF•INCH MM INCH MM INCH
1 M10 18 159 5 13/64 40 1 37/64
MINIMUM BUSBAR SECTION
M ACCORDING TO UL 98B
M (+5 % | -10 %)
N•M LBF•INCH
* T20 M4 1.2 10.6
** — M4 1.5 13.3
*** Allen M5 1.5 13.3
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M**
M***
1
© 2022 Littelfuse, Inc. 223 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
LS7R0400 1500 V DC SERIES
1500 V Dc • 400 A
Description
The Littelfuse LS7R dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow of
current safely to prevent shock hazards when trying to isolate
circuits or repair systems. It is a 1500 V dc disconnect for
ungrounded systems.
Features/Benefits
The patented operation system minimizes damage
caused by arcs upon disconnection to increase product
reliability and longevity
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for
added safety
The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the
product’s lifespan
The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions
Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
Electrical vehicle chargers
Specifications
UL 98B Standards
Total Voltage Rating 1500 V dc
Amperage Rating 400 A
SCCR Rating 10 kA
Ambient Temperature -20 to 50 °C (-4 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current
DC21B Rating 400 A / 1500 V dc
Other Characteristics
Power Losses at 400 A 21.15 watts
Maximum Busbar
Connection Range 2 bars x 4 mm (.16”) H x 32 mm (1.25”) L
Number of Circuits/Switches 1
Tightening Torque 159 lbf-in (18 N•m) for M10 screw
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
Recommended Accessories
Panel Handle with Shaft LDSSA11
For closed panel door access
Direct Handle LDSSI11
For open panel door access
Auxiliary Contact LDMAU11
Remotely indicates switch position
Spacers LDMEL11
Increase distance between switch and mounting plate
REACH
Littelfuse.com 224 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
LS7R0400 1500 V DC SERIES
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M*
M**
M***
Busbar
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M*
M**
M***
Busbar
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M*
M**
M***
Busbar
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
Part Numbering System
LS7R 0400 2P S 00L
Configuration Type
Amperage Terminal Measurement
Series UL product
Ordering Information
DC DISCONNECT SWITCH
PART NUMBER VOLTAGE AMPERAGE INSTALLATION CONFIGURATION SINGLE UNIT WEIGHT
LS7R04002PS00L 1500 V dc 400 A Ungrounded Type 2P 3 kg
Dimensions Millimeters (Inches)
Dc Disconnect Switch Switch - Side View Panel Handle with Shaft
LDSSA11
Switch - 3D Installation View Busbar
QTY
COPPER BUSBAR
M (TERMINAL TORQUE)
(+5 % | -10 %)
COPPER BUSBAR
H MAX
(CU)
COPPER BUSBAR
L MAX
(CU)
N•M LBF•INCH MM INCH MM INCH
2 M10 18 159 4 5/32 32 1¼
MINIMUM BUSBAR SECTION
M ACCORDING TO UL 98B
M (+5 % | -10 %)
N•M LBF•INCH
* T20 M4 1.2 10.6
** — M4 1.5 13.3
*** Allen M5 1.5 13.3
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
30 [1.18"] 72.5 [2.85"]
10.5 [4.13"]
ØM10
M
M**
M***
1
© 2022 Littelfuse, Inc. 225 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
LS7R0500 1500 V DC SERIES
1500 V Dc • 500 A
Description
The Littelfuse LS7R dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow of
current safely to prevent shock hazards when trying to isolate
circuits or repair systems. It is a 1500 V dc disconnect for
ungrounded systems.
Features/Benefits
The patented operation system minimizes damage
caused by arcs upon disconnection to increase product
reliability and longevity
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for
added safety
The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the
product’s lifespan
The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions
Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters
Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
Electrical vehicle chargers
Specifications
UL 98B Standards
Total Voltage Rating 1500 V dc
Amperage Rating 500 A
SCCR Rating 10 kA
Ambient Temperature -20 to 50 °C (-4 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current
DC21B Rating 500 A / 1500 V dc
Other Characteristics
Power Losses at 500 A 33.05 watts
Maximum Busbar
Connection Range 2 bars x 5 mm (.20”) H x 32 mm (1.25”) L
Number of Circuits/Switches 1
Tightening Torque 212 lbf-in (24 N•m)
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
Recommended Accessories
Panel Handle with Shaft LDSSA11
For closed panel door access
Direct Handle LDSSI11
For open panel door access
Auxiliary Contact LDMAU11
Remotely indicates switch position
Spacers LDMEL11
Increase distance between switch and mounting plate
REACH
Littelfuse.com 226 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
LS7R0500 1500 V DC SERIES
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
35 [1.38"] 70 [2.76"]
12.5 [4.92"]
ØM12
M
M*
M**
Busbar
M***
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
35 [1.38"] 70 [2.76"]
12.5 [4.92"]
ØM12
M
M*
M**
Busbar
M***
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
35 [1.38"] 70 [2.76"]
12.5 [4.92"]
ØM12
M
M*
M**
Busbar
M***
28.5 [1.12"]
108 [4.25"] 45 [1.76"]
MAX 166 [6.53"]
MIN 13 [0.51"]
4 [0.16"]
Part Numbering System
LS7R 0500 2P S 00L
Configuration Type
Amperage Terminal Measurement
Series UL product
Ordering Information
DC DISCONNECT SWITCH
PART NUMBER VOLTAGE AMPERAGE INSTALLATION CONFIGURATION SINGLE UNIT WEIGHT
LS7R05002PS00L 1500 V dc 500 A Ungrounded Type 2P 3 kg
Dimensions Millimeters (Inches)
Dc Disconnect Switch Switch - Side View Panel Handle with Shaft
LDSSA11
Switch - 3D Installation View Busbar
QTY
COPPER BUSBAR
M (TERMINAL TORQUE)
(+5 % | -10 %)
COPPER BUSBAR
H MAX
(CU)
COPPER BUSBAR
L MAX
(CU)
N•M LBF•INCH MM INCH MM INCH
2 M12 24 212 5 13/64 32 1¼
MINIMUM BUSBAR SECTION
M ACCORDING TO UL 98B
M (+5 % | -10 %)
N•M LBF•INCH
* T20 M4 1.2 10.6
** — M4 1.5 13.3
*** Allen M5 1.5 13.3
190 [7.48"]
150 [5.90"]
115 [4.53"]
150 [5.91"]
212 [8.35"]
95 [3.74"]
130 [5.12"]
188 [7.40"]
158.3 [6.23"]
198.3 [7.81"]
210 [8.27"]
170 [6.69"]
170 [6.69"]
35 [1.38"] 70 [2.76"]
12.5 [4.92"]
ØM12
M
M**
M***
© 2022 Littelfuse, Inc. 227 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
REACH
LS60250 500 V DC SERIES
500 V Dc • 250 A
Description
The Littelfuse LS6 dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow
of current safely to prevent shock hazards when trying to
isolate circuits or repair systems.
Features/Benefits
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for added
safety
The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the product’s
lifespan The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions
Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters
Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
Electrical vehicle chargers
Specifications
UL 98B Standards
Total Voltage Rating 500 V dc
Amperage Rating 250 A
SCCR Rating 10 kA
Ambient Temperature -20 to 50 °C (-4 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current
DC21B Rating 250 A/500 V dc
Other Characteristics
Power Losses at 250 A 10.08 watts
Minimum Connection
Wire Range/AWG 400 kcmil/MCM (203 mm2
)
Maximum Connection
Wire Range/AWG 500 kcmil/MCM (253 mm2
)
Number of Circuits/Switches 1
Mechanical Operations 8,000
Tightening Torque 159 lbf-in (18 N•m)
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
Recommended Accessories
Panel handle with shaft LDSSA11 for closed panel
door access
Direct handle LDSSI11 for open panel door access
Auxiliary contacts LD5LAU01 remotely indicate
switch position
Phase barriers LDRSF11 (Type 1V) and LDRSF12
(Type 2L) isolate sections to eliminate arcing between
the phases
Terminal lug LDRTL11W safely connects electrical and
mechanical devices (phase barriers must be used in order
to maintain the required clearance)
Terminal shrouds LDRCU11W offer protection against
direct contact after wiring
Spacers LDREL11W increase distance between switch
and mounting plate
Type 2L
Dc Ungrounded
Type 1V
Dc Grounded with Handle Attached
Littelfuse.com 228 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
LS60250 500 V DC SERIES
Part Numbering System Configuration
LS6 0250 1V S 00L
Configuration Type
1V = 1 Pole
2L = 2 Pole
Amperage
Terminal Measurement
Series
UL product
Ordering Information
Type 1V (1 Pole) Type 2L (2 Pole)
DC DISCONNECT SWITCH
SERIES TOTAL VOLTAGE AMPERAGE INSTALLATION CONFIGURATION POLES SINGLE UNIT WEIGHT
LS602501VS00L 500 V dc 250 A Grounded Type 1V 1 2 kg
LS602502LS00L 500 V dc 250 A Ungrounded Type 2L 2 3 kg
Dimensions Millimeters
Dc Disconnect Switch Panel Handle with Shaft
LDSSA11
Connection diagram
1V
1 1’
LS602501VS00L
Dimensions
7/8-14 UNF
TORQUE /PAR
500 lb.inch/56 Nxm
10-32 UNF
TORQUE /PAR
26,55 lb.inch/3 Nxm
2x
115
45
145
58 67
25
50
134
ø12,5
ø5,5
ø14
413
217
193
150
130
96
26,5 4
max. 166
min.13
130
10
27
45
140
125 3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 18 159
Connection diagram
1V
1 1’
LS602501VS00L
Dimensions
7/8-14 UNF
TORQUE /PAR
500 lb.inch/56 Nxm
10-32 UNF
TORQUE /PAR
26,55 lb.inch/3 Nxm
2x
115
45
145
58 67
25
50
134
ø12,5
ø5,5
ø14
413
217
193
150
130
96
26,5 4
max. 166
min.13
130
10
27
45
140
125 3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 18 159
Connection diagram
1V
1 1’
LS602501VS00L
Dimensions
7/8-14 UNF
TORQUE /PAR
500 lb.inch/56 Nxm
10-32 UNF
TORQUE /PAR
26,55 lb.inch/3 Nxm
2x
115
45
145
58 67
25
50
134
ø12,5
ø5,5
ø14
413
217
193
150
130
96
26,5 4
max. 166
min.13
130
10
27
45
140
125 3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 18 159
Auxiliary Contact
LD5AU01
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
Connection diagram
1V
1 1’
LS602501VS00L
Dimensions
7/8-14 UNF
TORQUE /PAR
500 lb.inch/56 Nxm
10-32 UNF
TORQUE /PAR
26,55 lb.inch/3 Nxm
2x
5145
58 67
25
50
134
ø12,5
ø5,5
ø14
413
217
193
150
130
96
26,5 4
max. 166
min.13
130
10
27
45
140
125 3/0
85 mm2
min
-
400 kcmil
240 mm2
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
LDRTL11W
3/0
85 MM2
MIN
---
400 KCMIL
240 MM2
MAX
CONDUCTOR
TEMPERATURE
RATING
COPPER WIRE ONLY
M (TERMINAL
TORQUE)
(+5% | -10%)
N•M LB.INCH
75 °C M10 18 159
LS602501MS00L
Dimensions
Connection diagram
1 1’
115
45
225
98 107
25
50 50
214
50
ø12,5
ø5,5
ø14
96
26,5 4
max. 166
min.13
130
10
183,5
27
45
205
3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperarating
75ºC 2 1
2’ 1’
Switch + Direct Handle
- Side View
Terminal Lug Measurements
Torque and Cable
Capacity Instructions
© 2022 Littelfuse, Inc. 229 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
LS60400 500 V DC SERIES
500 V dc • 400 A • 1 Pole
500 V dc • 400 A • 2 Pole (250 V dc per pole)
Description
The Littelfuse LS6 dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow
of current safely to prevent shock hazards when trying to
isolate circuits or repair systems.
Features/Benefits
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for added
safety The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the product’s
lifespan The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions
Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters
Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
Web Resources
For more information, visit:
littelfuse.com/DcDisconnectSwitch
Specifications
UL 98B Standards
Total Voltage Rating 500 V dc
Amperage Rating 400 A
SCCR Rating 10 kA
Ambient Temperature -20 to 50 °C (-4 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current DC21B
Rating 400 A / 500 V dc
Other Characteristics
Power Losses at 400 A 2 Pole (2L): 9.2 watts/pole
1 Pole (1V): 18.4 watts total
Minimum Connection
Wire Range / AWG 300 kcmil/MCM (152 mm2
)
Maximum Connection
Wire Range / AWG 350 kcmil/MCM (177 mm2
)
Number of Circuits/Switches 1
Mechanical Operations 8,000
Tightening Torque 212 lbf-in (24 N•m)
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
REACH
2 Pole (Type 2L)
Dc Ungrounded
1 Pole (Type 1V)
Dc Grounded with Handle Attached
Recommended Accessories
Panel handle with shaft LDSLA21 for closed panel
door access
Direct handle LDSLI21 for open panel door access
Auxiliary contacts LD5LAU01 remotely indicate
switch position
Phase barriers LDRSF21 (Type 1V) and LDRSF22
(Type 2L) isolate sections to eliminate arcing between
the phases
Terminal lug LDRTL22W safely connects electrical and
mechanical devices (phase barriers must be used in order
to maintain the required clearance)
Terminal shrouds LDRCU21W offer protection against
direct contact after wiring
Spacers LREL21W increase distance between switch and
mounting plate
Littelfuse.com 230 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
LS60400 500 V DC SERIES
Part Numbering System Configuration
LS6 0400 1V S 00L
Configuration Type
1V = 1 Pole
2L = 2 Pole
Amperage
Terminal Measurement
Series
UL product
Ordering Information
DC DISCONNECT SWITCH
SERIES TOTAL VOLTAGE AMPERAGE INSTALLATION CONFIGURATION POLES SINGLE UNIT WEIGHT
LS604001VS00L 500 V dc 400 A Grounded Type 1V 1 2 kg
LS604002LS00L 500 V dc 400 A Ungrounded Type 2L 2 3 kg
Dimensions Millimeters
Dc Disconnect Switch Panel Handle with Shaft
LDSLA21
2 1
2’ 1’
2L
LS604002LS00L
Dimensions
Connection diagram
DO NOT USE IN
GROUNDED INSTALLATIONS
181
169,5
91
35 ø12,5
ø6,5
ø16
90
131,5 max. 119
min. 13
40,4 5
165
155
526
274
243
191
165
65
6 AWG
16 mm2 min
-
350 kcmil
185 mm2
max
Lug Bolt
11/16-16 UNF
-
TORQUE / PAR
375 lb.inch
42 N•m
2x
2x
DR-TL22
14
42
60
143
60
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 24 212
2 1
2’ 1’
2L
LS604002LS00L
Dimensions
Connection diagram
DO NOT USE IN
GROUNDED INSTALLATIONS
181
169,5
91
35 ø12,5
ø6,5
ø16
90
131,5 max. 119
min. 13
40,4 5
165
155
526
274
243
191
165
65
6 AWG
16 mm2 min
-
350 kcmil
185 mm2
max
Lug Bolt
11/16-16 UNF
-
TORQUE / PAR
375 lb.inch
42 N•m
2x
2x
DR-TL22
14
42
60
143
60
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 24 212
2 1
2’ 1’
2L
LS604002LS00L
Dimensions
Connection diagram
DO NOT USE IN
GROUNDED INSTALLATIONS
181
169,5
91
35 ø12,5
ø6,5
ø16
90
131,5 max. 119
min. 13
40,4 5
165
155
526
274
243
191
165
65
6 AWG
16 mm2 min
-
350 kcmil
185 mm2
max
Lug Bolt
11/16-16 UNF
-
TORQUE / PAR
375 lb.inch
42 N•m
2x
2x
DR-TL22
14
42
60
143
60
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 24 212
Type 2L (2 Pole)
LS602501MS00L
Dimensions
Connection diagram
1 1’
115
45
225
98 107
25
50 50
214
50
ø12,5
ø5,5
ø14
96
26,5 4
max. 166
min.13
130
10
183,5
27
45
205
3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperarating
75ºC Type 1V (1 Pole)
2 1
2’ 1’
Auxiliary Contact
LD5AU01
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
LDRTL22W
16 MM2
MIN
---
350 KCMIL
185 MM2
MAX
CONDUCTOR
TEMPERATURE
RATING
COPPER WIRE ONLY
M (TERMINAL
TORQUE)
(+5% | -10%)
N•M LB.INCH
75 °C M10 24 212
2 1
2’ 1’
2L
LS604002LS00L
Dimensions
Connection diagram
DO NOT USE IN
GROUNDED INSTALLATIONS
181
169,5
91
35 ø12,5
ø6,5
ø16
90
131,5
max. 119
min. 13
40,4 5
165
155
526
274
243
191
165
65
6 AWG
16 mm2 min
-
350 kcmil
185 mm2
max
Lug Bolt
11/16-16 UNF
-
TORQUE / PAR
375 lb.inch
42 N•m
2x
2x
DR-TL22
14
42
60
Temperature
rating
Copper wire
only
M +5%
-10%
Switch + Direct Handle
- Side View
Terminal Lug Measurements
Torque and Cable
Capacity Instructions
© 2022 Littelfuse, Inc. 231 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
LS60250 1000 V DC SERIES
REACH 1000 V Dc • 250 A
Description
The Littelfuse LS6 dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow
of current safely to prevent shock hazards when trying to
isolate circuits or repair systems.
Features/Benefits
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier
to stop conduction when switch is in off position for
added safety
The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the
product’s lifespan
The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters
Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection UPS: switching and isolation of batteries
Electrical vehicle chargers
Type 2E
Dc Ungrounded
Type 1M
Dc Grounded with Handle Attached
Specifications
UL 98B Standards
Total Voltage Rating 1000 V dc
Amperage Rating 250 A
SCCR Rating 10 kA
Ambient Temperature -20 to 50 °C (-4 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current
DC21B Rating 250 A/1000 V dc
Other Characteristics
Power Losses at 250 A 19.59 watts
Minimum Connection
Wire Range/AWG 400 kcmil/MCM (203 mm2
)
Maximum Connection
Wire Range/AWG 500 kcmil/MCM (253 mm2
)
Number of Circuits/Switches 1
Mechanical Operations 8,000
Tightening Torque 159 lbf-in (18 N•m)
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
Recommended Accessories
Panel handle with shaft LDSSA11 for closed panel
door access
Direct handle LDSSI11 for open panel door access
Auxiliary contacts LD5LAU01 remotely indicate
switch position
Phase barriers LDRSF11 (Type 1M) and LDRSF13
(Type 2E) isolate sections to eliminate arcing between
the phases
Terminal lug LDRTL11W safely connects electrical and
mechanical devices (phase barriers must be used in order
to maintain the required clearance)
Terminal shrouds LDRCU13W offer protection against
direct contact after wiring
Spacers LDREL11W increase distance between switch
and mounting plate
Littelfuse.com 232 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
LS60250 1000 V DC SERIES
Part Numbering System Configuration
LS6 0250 1M S 00L
Configuration Type
1M = 1 Pole
2E = 2 Pole
Amperage
Terminal Measurement
Series
UL product
Ordering Information
LS602501MS00L
Dimensions
Connection diagram
1 1’
7/8-14 UTORQU500 lb.in10-32 UTORQU26,55 lb2x
115
45
225
98 107
25
50 50
214
50
ø12,5
ø5,5
ø14
96
26,5 4
max. 166
min.13
130
10
183,5
27
45
205
3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperature
rating
CN75ºC M10 1M (1 Pole) 2E (2 Pole)
1 1’ 2 2’
DC DISCONNECT SWITCH
SERIES TOTAL VOLTAGE AMPERAGE INSTALLATION CONFIGURATION POLES SINGLE UNIT WEIGHT
LS602501MS00L 1000 V dc 250 A Grounded Type 1M 1 2 kg
LS602502ES00L 1000 V dc 250 A Ungrounded Type 2E 2 3 kg
Dimensions Millimeters
Dc Disconnect Switch
LS602501MS00L
Dimensions
Connection diagram
1 1’
7/8-14 UNF
TORQUE /PAR
500 lb.inch/56 Nxm
10-32 UNF
TORQUE /PAR
26,55 lb.inch/3 Nxm
2x
115
45
225
98 107
25
50 50
214
50
ø12,5
ø5,5
ø14
96
26,5 4
max. 166
min.13
130
10
183,5
27
45
205
3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 18 159
Panel Handle with Shaft
LDSSA11
Dimensions
1 1’
7/8-14 UTORQUE 500 lb.inc10-32 UNTORQUE 26,55 lb.i2x
115
45
225
98 107
25
50 50
214
50
ø12,5
ø5,5
ø14
96
26,5 4
max. 166
min.13
130
10
183,5
27
45
205
3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperature
rating
CoNx75ºC M10 1LS602501MS00L
Dimensions
Connection diagram
1 1’
7/8-14 UNF
TORQUE /PAR
500 lb.inch/56 Nxm
10-32 UNF
TORQUE /PAR
26,55 lb.inch/3 Nxm
2x
225
98 107
25
50 50
214
50
ø12,5
ø5,5
ø14
96
26,5 4
max. 166
min.13
130
10
183,5
27
45
205
3/0
85 mm2
min
-
400 kcmil
240 mm2
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
LDRTL11W
3/0
85 MM2
MIN.
---
400 KCMIL
240 MM2
MAX.
CONDUCTOR
TEMPERATURE
RATING
COPPER WIRE
ONLY
M (TERMINAL
TORQUE)
(+5% | -10%)
N•M LB.INCH
75 °C M10 18 159
Auxiliary Contact
LD5AU01
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
LS602501MS00L
Dimensions
Connection diagram
1 1’
7/8-14 UNF
TORQUE /PAR
500 lb.inch/56 Nxm
10-32 UNF
TORQUE /PAR
26,55 lb.inch/3 Nxm
2x
115
45
225
98 107
25
50 50
214
50
ø12,5
ø5,5
ø14
96
26,5 4
max. 166
min.13
130
10
183,5
27
45
205
3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 18 159
Switch + Direct Handle
- Side View
Terminal Lug Measurements
Torque and Cable
Capacity Instructions
© 2022 Littelfuse, Inc. 233 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
LS60400 1000 V DC SERIES
1000 V dc • 400 A • 1 Pole
1000 V dc • 400 A • 2 Pole (500 V dc per pole)
1 Pole (Type 1M)
Dc Grounded with Handle Attached
2 Pole (Type 2E)
Dc Ungrounded
REACH
Description
The Littelfuse LS6 dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow
of current safely to prevent shock hazards when trying to
isolate circuits or repair systems.
Features/Benefits
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for added
safety
The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the product’s
lifespan
The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions
Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters
Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
Web Resources
For more information, visit:
littelfuse.com/DcDisconnectSwitch
Specifications
UL 98B Standards
Total Voltage Rating 1000 V dc
Amperage Rating 400 A
SCCR Rating 10 kA
Ambient Temperature -20 to 50 °C (-4 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current DC21B
Rating 400 A/1000 V dc
Other Characteristics
Power Losses at 400 A 2 Pole (2E): 18.4 watts/pole
1 Pole (1M): 36.11 watts total
Minimum Connection
Wire Range / AWG 300 kcmil/MCM (152 mm2
)
Maximum Connection
Wire Range / AWG 350 kcmil/MCM (177 mm2
)
Number of Circuits/Switches 1
Mechanical Operations 8,000
Tightening Torque 212 lbf-in (24 N•m)
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
Recommended Accessories
Panel handle with shaft LDSLA21 for closed panel
door access
Direct handle LDSLI21 for open panel door access
Auxiliary contacts LD5LAU01 remotely indicate s
witch position
Phase barriers LDRSF21 (Type 1M) and LDRSF23
(Type 2E) isolate sections to eliminate arcing between
the phases Terminal lug LDRTL22W safely connects electrical and
mechanical devices (phase barriers must be used in
order to maintain the required clearance)
Terminal shrouds LDRCU23W offer protection against
direct contact after wiring Spacers LDREL21W increase distance between switch
and mounting plate
Littelfuse.com 234 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
LS60400 1000 V DC SERIES
Part Numbering System Configuration
LS6 0400 1M S 00L
Amperage
Terminal Measurement
Series
UL product
LS602501MS00L
Dimensions
Connection diagram
1 1’
7/8-14 UTORQU500 lb.i10-32 UTORQU26,55 lb2x
115
45
225
98 107
25
50 50
214
50
ø12,5
ø5,5
ø14
96
26,5 4
max. 166
min.13
130
10
183,5
27
45
205
3/0
85 mm2
min
-
400 kcmil
240 mm2
max
Temperature
rating
CN75ºC M10 Type 1M (1 Pole) Type 2E (2 Pole)
1 1’ 2 2’
Ordering Information
DC DISCONNECT SWITCH
SERIES TOTAL VOLTAGE AMPERAGE INSTALLATION CONFIGURATION POLES SINGLE UNIT WEIGHT
LS604001MS00L 1000 V dc 400 A Grounded Type 1M 1 2 kg
LS604002ES00L 1000 V dc 400 A Ungrounded Type 2E 2 3 kg
Dimensions Millimeters
Dc Disconnect Switch
604001MS00L
mensions
onnection diagram
1 1’
1M
232,5
286
279,5
141
65
35 ø12,5
ø6,5
ø16
65 65
145
131,5 max. 119
min. 13
40,4 5
165
260
6 AWG
16 mm2 min
-
350 kcmil
185 mm2
max
Lug Bolt
11/16-16 UNF
-
TORQUE / PAR
375 lb.inch
42 Nxm
2x
2x
DR-TL22
14
42
60
143
60
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 24 212
Switch + Direct Handle
- Side View
LS604001MS00L
Dimensions
Connection diagram
1 1’
1M
232,5
286
279,5
141
65
35 ø12,5
ø6,5
ø16
65 65
145
131,5 max. 119
min. 13
40,4 5
165
260
6 AWG
16 mm2 min
-
350 kcmil
185 mm2
max
Lug Bolt
11/16-16 UNF
-
TORQUE / PAR
375 lb.inch
42 Nxm
2x
2x
DR-TL22
14
42
60
143
60
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 24 212
Panel Handle with Shaft
LDSLA21
LS604001MS00L
Dimensions
Connection diagram
1 1’
1M
232,5
286
279,5
141
65
35 ø12,5
ø6,5
ø16
65 65
145
131,5 max. 119
min. 13
40,4 5
165
260
6 AWG
16 mm2 min
-
350 kcmil
185 mm2
max
Lug Bolt
11/16-16 UNF
-
TORQUE / PAR
375 lb.inch
42 Nxm
2x
2x
DR-TL22
14
42
60
143
60
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºC M10 24 212
LDRTL22W
3/0
85 MM2
MIN.
---
400 KCMIL
240 MM2
MAX.
CONDUCTOR
TEMPERATURE
RATING
COPPER WIRE ONLY
M (TERMINAL
TORQUE)
(+5% | -10%)
N•M LB.INCH
75 °C M10 24 212
LS604001MS00L
Dimensions
Connection diagram
1 1’
1M
232,5
286
279,5
141
65
35 ø12,5
ø6,5
ø16
65 65
145
131,5
max. 119
min. 13
40,4 5
165
260
6 AWG
16 mm2 min
-
350 kcmil
185 mm2
max
Lug Bolt
11/16-16 UNF
-
TORQUE / PAR
375 lb.inch
42 Nxm
2x
2x
DR-TL22
14
42
60
Temperature
rating
Copper wire
only
M +5%
-10%
Nxm lb.inch
75ºCM1024212Configuration Type
1M = 1 Pole
2E = 2 Pole
Auxiliary Contact
LD5AU01
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
Terminal Lug Measurements
Torque and Cable
Capacity Instructions
© 2022 Littelfuse, Inc. 235 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
LS6R0250 1500 V DC SERIES
1500 V Dc • 250 A REACH
Description
The Littelfuse LS6R dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow
of current safely to prevent shock hazards when trying to
isolate circuits or repair systems.
Features/Benefits
The patented operation system minimizes damage
caused by arcs upon disconnection to increase product
reliability and longevity
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for added
safety
The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the product’s
lifespan
The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
Electrical vehicle chargers
Specifications
UL 98B Standards
Total Voltage Rating 1500 V dc
Amperage Rating 250 A
SCCR Rating 10 kA
Ambient Temperature -20 to 50 °C (-4 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current
DC21B Rating 250 A/1500 V dc
Other Characteristics
Power Losses at 250 A 4.13 watts
Maximum Busbar
Connection Range 2 bars x 4 mm (.16”) H x 30 mm (1.18”) L
Number of Circuits/Switches 1
Mechanical Operations 8,000
Tightening Torque 212 lbf-in (24 N•m)
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
Recommended Accessories
Panel Handle with Shaft LDSSA11
For closed panel door access
Direct Handle LDSSI11
For open panel door access
Auxiliary Contact LD5LAU01
Remotely indicates switch position
Type CB
Dc Ungrounded
Type 4D
Dc Grounded with handle attached
Littelfuse.com 236 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
LS6R0250 1500 V DC SERIES
Part Numbering System Configuration
Ordering Information
Type 4D (1 Pole) Type CB (2 Pole)
1
1’
UP
DOWN
2
2’
1
1’
UP
DOWN
LS6R 0250 CB S 00L
DC DISCONNECT SWITCH
SERIES TOTAL VOLTAGE AMPERAGE INSTALLATION CONFIGURATION POLES SINGLE UNIT WEIGHT
LS6R02504DS00L 1500 V dc 250 A Grounded Type 4D 1 4.5 kg
LS6R0250CBS00L 1500 V dc 250 A Ungrounded Type CB 2 4.5 kg
Dimensions Millimeters
Dc Disconnect Switch Switch - Side View Panel Handle with Shaft
LDSSA11
Busbar
Auxiliary Contact
LD5AU01
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
LS6R0400CBD00L
Dimensions
Connection diagram
2
2’
1
1’
UP
DOWN
150
H max
(Cu)
L max
(Cu) M
mm lb.inch mm lb.inch Nxm lb.inch
250 A 4 5/32 30 1-3/16 M12 24 212
320 A
400 A 4 5/32 32 1-1/4 M12 24 212
J
250 A 25
320 A
400 A 30
225
217
193
157
108 205
ø12,5
ø5,5
12
45
115
170
J
max 166
min 13
45
102
172
10
4
4
45
102
4
4 45
27
117
0º 90º
265
130
245
Standard
fixing
BUSBAR
H MAX
(CU)
BUSBAR
L MAX
(CU)
COPPER BAR
M (TERMINAL
TORQUE)
(+5 % | -10 %)
MM INCH MM INCH N•M LB.INCH
4 5/32 36 1 3/16 M12 24 212
25
Terminal Measurement
UL product
Configuration Type
CB = 2 Pole
4D = 1 Pole
Amperage
Series
LS6R0400CBD00L
Dimensions
Connection diagram
2
2’
1
1’
UP
DOWN
150
H max
(Cu)
L max
(Cu) M
mm lb.inch mm lb.inch Nxm lb.inch
250 A 4 5/32 30 1-3/16 M12 24 212
320 A
400 A 4 5/32 32 1-1/4 M12 24 212
J
250 A 25
320 A
400 A 30
225
217
193
157
108 205
ø12,5
ø5,5
12
45
115
170
J
max 166
min 13
45
102
172
10
4
4
45
102
4
4 45
27
117
0º 90º
265
130
245
Standard
fixing
LS6R0400CBD00L
Dimensions
Connection diagram
2
2’
1
1’
UP
DOWN
150
H max
(Cu)
L max
(Cu) M
mm lb.inch mm lb.inch Nxm lb.inch
250 A 4 5/32 30 1-3/16 M12 24 212
320 A
400 A 4 5/32 32 1-1/4 M12 24 212
J
250 A 25
320 A
400 A 30
225
217
193
157
108 205
ø12,5
ø5,5
12
45
115
170
J
max 166
min 13
45
102
172
10
4
4
45
102
4
4 45
27
117
0º 90º
265
130
245
Standard
fixing
© 2022 Littelfuse, Inc. 237 Littelfuse.com
Switch Products − Dc Disconnect Switch
Switch Products
7
LS6R0400 1500 V DC SERIES
1500 V Dc • 400 A REACH
Description
The Littelfuse LS6R dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow
of current safely to prevent shock hazards when trying to
isolate circuits or repair systems.
Features/Benefits
The patented operation system minimizes damage
caused by arcs upon disconnection to increase product
reliability and longevity
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for added
safety
The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the product’s
lifespan
The internally-located "sandwich-type" 2-contact
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in shortcircuit conditions
Meets UL 94 flammability requirements with selfextinguishing/non-flammable materials to prevent fires
Applications
Solar/PV systems: combiner boxes, recombiner boxes
and inverters
Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
Electrical vehicle chargers
Specifications
UL 98B Standards
Total Voltage Rating 1500 V dc
Amperage Rating 400 A
SCCR Rating 10 kA
Ambient Temperature -30 to 50 °C (-22 to 122 °F)
IEC 60947-3 Standards
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Rating Uimp 12 kV
Operational Current
DC21B Rating 400 A/1500 V dc
Other Characteristics
Power Losses at 400 A 10.58 watts
Maximum Busbar
Connection Range 2 bars x 4 mm (.16”) H x 32 mm (1.26”) L
Number of Circuits/Switches 1
Mechanical Operations 8,000
Tightening Torque 212 lbf-in (24 N•m)
Material Plastic housing
Silver-plated copper terminals
Base Mounting Screws
Flammability Rating UL 94 V-0
Approvals UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
Environmental RoHS compliant
REACH
Country of Origin Spain
Recommended Accessories
Panel Handle with Shaft LDSSA11
For closed panel door access
Direct Handle LDSSI11
For open panel door access
Auxiliary Contact LD5LAU01
Remotely indicates switch position
Type CB
Dc Ungrounded
Type 4D
Dc Grounded with handle attached
Littelfuse.com 238 © 2022 Littelfuse, Inc.
Switch Products − Dc Disconnect Switch
Switch Products
7
Part Numbering System Configuration
LS6R 0400 CB D 00L
Configuration Type
CB = 2 Pole
4D = 1 Pole
Amperage
Terminal Measurement
Series
UL product
Ordering Information
Type 4D (1 Pole) Type CB (2 Pole)
1
1’
UP
DOWN
2
2’
1
1’
UP
DOWN
DC DISCONNECT SWITCH
SERIES TOTAL VOLTAGE AMPERAGE INSTALLATION CONFIGURATION POLES SINGLE UNIT WEIGHT
LS6R04004DD00L 1500 V dc 400 A Grounded Type 4D 1 4.5 kg
LS6R0400CBD00L 1500 V dc 400 A Ungrounded Type CB 2 4.5 kg
Dimensions Millimeters
Dc Disconnect Switch Switch - Side View Panel Handle with Shaft
LDSSA11
Busbar
Auxiliary Contact
LD5AU01
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
--, D
21 8 2 8
N 2.9 4.5
lJl
r ' .......
lJl
w Q -n
I'- I\ .,
Jj
22.2
28.2 10.3
□
Auxiliary contacts LD5LAU01
diagram
LS6R0400CBD00L
Dimensions
Connection diagram
2
2’
1
1’
UP
DOWN
150
H max
(Cu)
L max
(Cu) M
mm lb.inch mm lb.inch Nxm lb.inch
250 A 4 5/32 30 1-3/16 M12 24 212
320 A
400 A 4 5/32 32 1-1/4 M12 24 212
J
250 A 25
320 A
400 A 30
225
217
193
157
108 205
ø12,5
ø5,5
12
45
115
170
J
max 166
min 13
45
102
172
10
4
4
45
102
4
4 45
27
117
0º 90º
265
130
245
Standard
fixing
BUSBAR
H MAX
(CU)
BUSBAR
L MAX
(CU)
COPPER BAR
M (TERMINAL
TORQUE)
(+5 % | -10 %)
MM INCH MM INCH N•M LB.INCH
4 5/32 32 1¼ M12 24 212
30
LS6R0400CBD00L
Dimensions
Connection diagram
2
2’
1
1’
UP
DOWN
150
H max
(Cu)
L max
(Cu) M
mm lb.inch mm lb.inch Nxm lb.inch
250 A 4 5/32 30 1-3/16 M12 24 212
320 A
400 A 4 5/32 32 1-1/4 M12 24 212
J
250 A 25
320 A
400 A 30
225
217
193
157
108 205
ø12,5
ø5,5
12
45
115
170
J
max 166
min 13
45
102
172
10
4
4
45
102
4
4 45
27
117
0º 90º
265
130
245
Standard
fixing
LS6R0400CBD00L
Dimensions
Connection diagram
2
2’
1
1’
UP
DOWN
150
H max
(Cu)
L max
(Cu) M
mm lb.inch mm lb.inch Nxm lb.inch
250 A 4 5/32 30 1-3/16 M12 24 212
320 A
400 A 4 5/32 32 1-1/4 M12 24 212
J
250 A 25
320 A
400 A 30
225
217
193
157
108 205
ø12,5
ø5,5
12
45
115
170
J
max 166
min 13
45
102
172
10
4
4
45
102
4
4 45
27
117
0º 90º
265
130
245
Standard
fixing
LS6R0400 1500 V DC SERIES
© 2022 Littelfuse, Inc. 239 Littelfuse.com
LFCP Fused Selection Coordination Panel ...................................... 236
LCP Fused Selective Coordination Panel......................................... 238
LPS Series POWR-Switch (Shunt Trip Disconnect)........................ 240
PRE-ENGINEERED SOLUTIONS
Table of Contents
Section Overview
POWR-GARD’s pre-engineered solutions include electrical
panels engineered to meet NEC requirements, as well as
fused and non-fused disconnect switches. These customizable,
one-piece solutions save time and money by streamlining the
installation process and minimizing system downtime.
Littelfuse.com 240 © 2022 Littelfuse, Inc.
Pre-Engineered Solutions
Pre-Engineered Solutions
8
Selective Coordination Panel
LFCP SERIES FUSED COORDINATION PANEL
Specifications
Voltage Ratings 600 V ac or less*
Ampere Ratings 60 A, 100 A and 200 A
Conductor Terminals See next page
UL Listed UL 67 Enclosed Panelboard
SCCR 200 kA at 600 V ac
Code Requirements
NEC requires that the following systems be selectively
coordinated:
Health Care Essential Electrical Systems (NEC 517.26)
Elevators (NEC 620.62)
Emergency Systems (NEC 700.32 in 2017)
(NEC700.28 in 2014)
Legally Required Standby Systems (NEC 701.18)
Critical Operations Power Systems (NEC 708.54)
Description
The Littelfuse LFCP series fused coordination panel is a compact
fusible and easily configurable pre-engineered panel for circuits
requiring selective coordination. Rated up to 600 V ac, this
coordination panel saves time and money, plus increases safety,
by minimizing system downtime.
The advanced LFCP series is available with 200 kA SCCR rating
using Class CC and J fuses and can be used on branch and feeder/
service entrance circuits.
Applications
Elevators Hospitals and medical centers
Hotels
Entertainment industry Amusement parks and stadiums Multi-unit residential constructions
Schools
Web Resources
For more information, visit: Littelfuse.com/LFCP
Additional Design Options
200 % neutral rating Spare fuse storage (holds 10 spare CC fuses)
Surge protective device overvoltage protection
* Suitable for 120/208, 277/480 and 600 V ac applications
Features/Benefits
Meets NEC selective coordination code requirements
Main lug only or main fused disconnect options available
Class CC fuse holders have built-in open-circuit indication
35 A–200 A Class J fuses are available with open-circuit
indication
Uses standard disconnects and Class CC and J fuses
Feed-through lugs available
Neutral options are configurable for service entrance
Ground options can be field isolated
Copper bus standard
Surface mount
Available in standard 20” width enclosure for easy
installation
Door-in-door construction standard
NEMA 1 indoor enclosure
© 2022 Littelfuse, Inc. 241 Littelfuse.com
Pre-Engineered Solutions
Pre-Engineered Solutions
8
Part Numbering System
Warranty – Visit www.littelfuse.com/warranty for details.
LFCP SERIES FUSED COORDINATION PANEL
ENCLOSURE
SIZE
PANEL
CIRCUIT
"A"
DIMENSIONAL
HEIGHT
"B"
DIMENSIONAL
HEIGHT
TYPE(S) MAIN WIRE
RANGE (AWG)
NEUTRAL WIRE
RANGE (AWG)
GROUND WIRE
RANGE (AWG)
FEED-THROUGH
WIRE RANGE
(AWG)
20"Wx50"H
200 A 1273.2
[50.125]
1133.5
[44.625]
MLO 6–300 kcmil 4–600 kcmil 6–350 kcmil N/A
Fused Disconnect 4–300 kcmil 4–600 kcmil 6–350 kcmil 6–3/0
100 A Fused Disconnect 14–2/0 6–350 kcmil 6–350 kcmil 6–3/0
20"Wx32"H
175 A 816.0
[32.125]
676.3
[26.625]
MLO 6–3/0 6–350 kcmil*
4–600 kcmil* 6–350 kcmil N/A
60 A Fused Disconnect 14–4 6–350 kcmil 6–350 kcmil 6–3/0
Physical Characteristics
Note: 200 % neutral wire ranges are shown.
*Dependent on specific panel amperage to provide 200 % rated neutral.
C
MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
Front View with Door Assembly Removed Front Trim
Type 1 (NEMA) Enclosure
152.4
[6.00]
508.0
[20.00]
511.2
[20.13]
422.3
[16.63]
B
A
Door in Door Assembly
with Catch & Lock
Series A mm [in] B mm [in]
LFCP2FD 1273.2
[50.125]
1133.5
[44.625]
LFCP2ML 1273.2
[50.125]
1133.5
[44.625]
LFCP1FD 1273.2
[50.125]
1133.5
[44.625]
LFCP1ML 816.0
[32.125]
676.3
[26.625]
LFCP6FD 816.0
[32.125]
676.3
[26.625]
C
DRW DATE
GRAMS/PIECE
FINISH GOOD WT
myork 4/21/2021
MATL SPEC FINISH
UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN
BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATING. TOLERANCING
TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
SCALE
NTS
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
Front View with Door Assembly Removed Front Trim
Type 1 (NEMA) Enclosure
152.4
[6.00]
508.0
[20.00]
511.2
[20.13]
422.3
[16.63]
B
A
Door in Door Assembly
with Catch & Lock
Series A mm [in] B mm [in]
LFCP2FD 1273.2
[50.125]
1133.5
[44.625]
LFCP2ML 1273.2
[50.125]
1133.5
[44.625]
LFCP1FD 1273.2
[50.125]
1133.5
[44.625]
LFCP1ML 816.0
[32.125]
676.3
[26.625]
LFCP6FD 816.0
[32.125]
676.3
[26.625]
C
MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
Front View with Door Assembly Removed Front Trim
Type 1 (NEMA) Enclosure
152.4
[6.00]
508.0
[20.00]
511.2
[20.13]
422.3
[16.63]
B
A
Door in Door Assembly
with Catch & Lock
Series A mm [in] B mm [in]
LFCP2FD 1273.2
[50.125]
1133.5
[44.625]
LFCP2ML 1273.2
[50.125]
1133.5
[44.625]
LFCP1FD 1273.2
[50.125]
1133.5
[44.625]
LFCP1ML 816.0
[32.125]
676.3
[26.625]
LFCP6FD 816.0
[32.125]
676.3
[26.625]
C
MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
Front View with Door Assembly Removed Front Trim
Type 1 (NEMA) Enclosure
152.4
[6.00]
508.0
[20.00]
511.2
[20.13]
422.3
[16.63]
B
A
Door in Door Assembly
with Catch & Lock
Series A mm [in] B mm [in]
LFCP2FD 1273.2
[50.125]
1133.5
[44.625]
LFCP2ML 1273.2
[50.125]
1133.5
[44.625]
LFCP1FD 1273.2
[50.125]
1133.5
[44.625]
LFCP1ML 816.0
[32.125]
676.3
[26.625]
LFCP6FD 816.0
[32.125]
676.3
[26.625]
C
MATL SPEC FINISH
DENOTES CRITICAL CHARACTERISTICS.
DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE
DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION
OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT
AND TRACKING TO BE DEFINED IN
LITTELFUSE INSPECTION INSTRUCTIONS.
DENOTES CP DIMENSIONS, -MINIMUM CP VALUE
MUST BE WITHIN THE DIMENSIONAL LIMITATIONS
SHOWN ON DRAWING AND INITIALLY LOCATED TO
ALLOW FOR MAXIMUM TOOL LIFE.
CPK
CP
CRITICAL CHARACTERISTIC FOR PART SAFETY/COMPLIANCE
Front View with Door Assembly Removed Front Trim
Type 1 (NEMA) Enclosure
152.4
[6.00]
508.0
[20.00]
511.2
[20.13]
422.3
[16.63]
B
A
Door in Door Assembly
with Catch & Lock
Series A mm [in] B mm [in]
LFCP2FD 1273.2
[50.125]
1133.5
[44.625]
LFCP2ML 1273.2
[50.125]
1133.5
[44.625]
LFCP1FD 1273.2
[50.125]
1133.5
[44.625]
LFCP1ML 816.0
[32.125]
676.3
[26.625]
LFCP6FD 816.0
[32.125]
676.3
[26.625]
Dimensions Millimeters (inches)
LFCP6 FD 30 – 00 4 S B T = Littlefuse Catalog Number LFCP6FD30-004SBT
Side View Front View with
Door Assembly Removed
Front Trim
Type 1 (NEMA) Enclosure
Door in Door Assembly
with Catch & Lock
LITTELFUSE PANEL
CATALOG NUMBER MAIN DEVICE TOTAL BRANCH
CIRCUITS
60 A BRANCH CIRCUITS
(AVAILABLE IN 3 POLE ONLY) PANEL VOLTAGE SURGE
PROTECTION FEED BUSBAR
PLATING
Required Required Required Required Required Optional Optional Optional
Catalog
Number Rating Type Code Quantity Code Quantity Code Type Code Type Code Type Code Type Code
LFCP6
LFCP1
LFCP2
60 A
100 A
200 A
Fused
Disconnect FD 18
24
30
36
42
18
24
30
36
42
0
3
6
9
12
00
03
06
09
12
120/208 V*
277/480 V*
2
4
SPD2**
Series S
Top
(Standard) Blank Un-plated
(Standard) Blank
Main Lug
Only ML Bottom B
Tin T
Silver A
*Contact factory for 240 V single phase option.
** Contact factory for SPD with neutral to ground protection.
Littelfuse.com 242 © 2022 Littelfuse, Inc.
Pre-Engineered Solutions
Pre-Engineered Solutions
8
Pre-Engineered Solutions
LCP FUSED COORDINATION PANEL
Selective Coordination Panel
Features/Benefits
• Meets NEC® requirements
• Class CC and J fuse holders have built-in
open-circuit indication
• Fast-acting UL Listed fuses protect against short circuits
• Feed through/sub feed lugs and 84-circuit
configuration available
• Ground and neutral bars
• Copper bus standard
Advanced Design Options
• MLO, Main Circuit Breaker, or Main Fused Pullout device
• Fused Class T branch circuit pullout
• Spare fuse cabinet accessory (holds six spare fuses)
• SPD overvoltage protection
• Any NEMA enclosure required
• High amperage sub-fed branch breakers (J60A)
Specifications
Voltage Ratings 120/208, 120/240, 277/480 VAC
Main Bus Rating 100 A - 400 A Standard
Conductor Terminals 6 AWG - 300 kcmil
UL Listed UL 67 Panel boards and UL 50 Enclosures
SCCR 100 kA Max*
* The following current-limiting fuses must be used directly upstream for 100kA SCCR.
1. 120/208 Volt Panels – LLNRK 100 A max, JTD_ID 200 A max, or JLLN 200 A max
2. 120/240 Volt Panels – LLSRK_ID 200 A max, JTD_ID 200 A max, or JLLS 200 A max
3. 277/480 Volt Panels – LLSRK_ID 200 A max, JTD_ID 200 A max, or JLLS 200 A max
Web Resources
For more information, visit: littelfuse.com/lcp
Description
The Littelfuse Coordination Panel provides a simple,
time-saving solution for circuits that require selective
coordination. This UL Listed product saves time and money,
and increases safety by minimizing system downtime.
Applications
• Elevators
• Hospitals
• Hotel and Entertainment Industry
• Amusement Parks and Stadiums
Code Requirements
Systems required by the NEC® to be selectively
coordinated include:
• Health Care Essential Electrical Systems (NEC 517.26)
• Elevators (NEC 620.62)
• Emergency Systems (NEC 700.32 in 2017)
(NEC 700.28 in 2014)
• Legally Required Standby Systems (NEC 701.18)
• Critical Operations Power Systems (NEC 708.54)
†Fuses quoted separately to meet panel specifications. Coordination for breakers >60 A depends on upstream and
downstream devices. More specialized configurations are also available. Contact factory for more information.
Note: The Littelfuse LPS and LCP products are custom
designed products that fall outside standard specifications.
Customizable Options (select one from each column)
NUMBER
OF
CIRCUITS
VOLTAGE MAIN DEVICES NEUTRAL
RATING
PANEL
MOUNTING
PANEL
DOOR
FUSE
HOLDERS
BRANCH CIRCUIT
PROTECTION
DEVICES
(1-3 POLE)†
PANEL
FEED OPTIONAL LUGS
STANDARD
ENCLOSURE
RATING
2 - 42 120/208 V 3P, 4 W
120/240 V 1P, 3 W
277/480 V 3P, 4 W
125, 225, 400 or
600 A MLO
Up to 600 A MCB
or Main Fuse
Pullout
100%
200%
Surface
Flush
Standard
Door-in-door
30 A Class CC
60 A Class J
>100A Class T
10 A- 60 A fused
circuit breaker
70 A-200 A
fused pullouts
Sub-fed circuit
breakers >60 A
(not fused)
Top
Bottom
None
Sub-Fed
(MLO panels)
Feed-Through
NEMA 1
NEMA 3R
NEMA 4X
NEMA 12
© 2022 Littelfuse, Inc. 243 Littelfuse.com
Pre-Engineered Solutions
Pre-Engineered Solutions
8
LCP FUSED COORDINATION PANEL
Selective Coordination Panel
Inner Line
GND Bus
Neutral Detail
Neutral Detail
(6 AWG - 300 kcmil) Cu/Al
Incoming Main Lugs
Cutler Hammer
GHB (480 V) or BAB (208 V)
Circuit Breakers
(or Pullouts)
LPSC001ID POWR-Safe
Dead front Class CC 600 VAC
Fuseholder for use with Littelfuse
CCMR, KLKR or KLDR Class CC fuses
or POWR-Safe LPSJ holders for use
the Class J fuses. (Fuses not included)
LPSC001ID POWR-Safe
Dead front Class CC 600 VAC
Fuseholder for use with Littelfuse
CCMR, KLKR or KLDR Class CC fuses
or POWR-Safe LPSJ holders for use
the Class J fuses. (Fuses not included)
Front Trim
Type 1 (NEMA) Enclosure
Front View with Front Removed
Hinged Door with
Catch and Lock
Dimensions in mm [inches]
Dimensions in mm [inches]
GND Bus
Inner Line
(6 AWG - 300 kcmil) Cu/Al
Incoming Main Lugs
Cutler Hammer
GHB (480 V) or BAB (208 V)
Circuit Breakers
(or Pullouts)
Front Trim
Type 1 (NEMA) Enclosure Front View with Front Removed Hinged Door with
Catch and Lock
[6.00]
152.4
[6.00]
152.4
[28.00]
711.2
[28.00]
711.2
[36.00]
914.4
[24.00]
609.6
[16.50]
419.1
[28.00]
711.2
[42.00]
1066.8
[30.00]
762
[16.50]
419.1
[9.69]
246.06 [8.94]
227.01
[28.00]
711.2
[9.69]
246.06
[8.94]
227.01
Dimensions mm (inches)
Standard Coordination Panel Board (up to 30 circuits)
Standard Coordination Panel Board (31-42 circuits)
Inner Line
GND Bus
Neutral Detail
Neutral Detail
(6 AWG - 300 kcmil) Cu/Al
Incoming Main Lugs
Cutler Hammer
GHB (480 V) or BAB (208 V)
Circuit Breakers
(or Pullouts)
LPSC001ID POWR-Safe
Dead front Class CC 600 VAC
Fuseholder for use with Littelfuse
CCMR, KLKR or KLDR Class CC fuses
or POWR-Safe LPSJ holders for use
the Class J fuses. (Fuses not included)
LPSC001ID POWR-Safe
Dead front Class CC 600 VAC
Fuseholder for use with Littelfuse
CCMR, KLKR or KLDR Class CC fuses
or POWR-Safe LPSJ holders for use
the Class J fuses. (Fuses not included)
Front Trim
Type 1 (NEMA) Enclosure
Front View with Front Removed
Hinged Door with
Catch and Lock
Dimensions in mm [inches]
Dimensions in mm [inches]
GND Bus
Inner Line
(6 AWG - 300 kcmil) Cu/Al
Incoming Main Lugs
Cutler Hammer
GHB (480 V) or BAB (208 V)
Circuit Breakers
(or Pullouts)
Front Trim
Type 1 (NEMA) Enclosure Front View with Front Removed Hinged Door with
Catch and Lock
[6.00]
152.4
[6.00]
152.4
[28.00]
711.2
[28.00]
711.2
[36.00]
914.4
[24.00]
609.6
[16.50]
419.1
[28.00]
711.2
[42.00]
1066.8
[30.00]
762
[16.50]
419.1
[9.69]
246.06 [8.94]
227.01
[28.00]
711.2
[9.69]
246.06
[8.94]
227.01
Note: The Littelfuse LCP Series products are custom designed
products that fall outside standard specifications.
Dimensions may change depending on panel components.
More specialized configurations are also available.
Contact factory for more information.
Littelfuse.com 244 © 2022 Littelfuse, Inc.
Pre-Engineered Solutions
Pre-Engineered Solutions
8
LPS SERIES SHUNT TRIP DISCONNECT SWITCH
Description
The Littelfuse® LPS Series provides a simple and
economical solution for applications that require selective
coordination and shunt trip capabilities.
Utilizes Class J time-delay fuses that are easily
coordinated with other system overcurrent devices.
The shunt trip capability allows the LPS Series to meet
the ANSI/ASME standard that requires power to be
automatically disconnected before water is turned on by
the fire safety system.
Applications
• Elevator circuits
• Data processing rooms
• Building emergency systems
Web Resources
Download technical information: Littelfuse.com/LPS
Specifications (Disconnect Switch)
Supply Voltage Rating* 208 V, 240 V, 480 V
Ampere Range 30 A, 60 A, 100 A, 200 A, 400 A
Enclosures NEMA 1 (standard)
NEMA 3R, NEMA 4, NEMA 12 (optional)
Approvals UL Listed (File: E219511)
*Contact factory for 600 V options.
Specifications (Shunt Trip)
Voltage Rating 120 V, 60 Hz
Max Inrush 4 A
Max On time 1.5 cycles
Momentary Inrush 140 VA
SCCR Refer to Operations and Maintenance
Manual*
*Contact factory for 400 A panel SCCR
Features/Benefits
• Pre-engineered single unit, which makes procurement
easier than systems with multiple components
• Reduces labor costs up to 66% and total installation
costs by over 30%
• Pre-installed UL Listed Class J fuse holder – unique
Class J size eliminates the need for any rejection type
fuse clips
• Optional features offer flexibility for a variety of applications
• Color coded control power terminal blocks
• UL Listed package
• Cu and AI wire rated
• Pre-wired control circuits lower installation time
• Lockable operating handle meets all code and safety
requirements (accepts up to 3 locks)
• Every unit is fully tested before delivery
Options
• Control power transformer with fuses and blocks
• Fire safety interface relay
• Key to test switch
• Pilot light ”On”
• Isolated neutral lug
• Mechanical interlock auxiliary contact for hydraulic
elevators with automatic recall (5 amp 120 V ac rated)
• Fire alarm voltage monitoring relay
• Enclosure
• Surge Protection Device
• Option to bypass alarm when performing maintenance
(-AZ option)
• XPress-Ship™ service offers 48 hours direct shipment
service on select fully loaded LPS Series Shunt Trip
Disconnect Switches
© 2022 Littelfuse, Inc. 245 Littelfuse.com
Pre-Engineered Solutions
Pre-Engineered Solutions
8
LPS SERIES SHUNT TRIP DISCONNECT SWITCH
LITTELFUSE
SWITCH
CATALOG
NUMBER
CONTROL
POWER
TRANSFORMER
STD. 100 VA
WITH PRI &
SEC FUSE
(120 V SEC.)
"FIRE SAFETY
INTERFACE RELAY
(3 PDT, 10 A, 120 V)
KEY TO TEST
SWITCH
PILOT LIGHT
"ON"
ISOLATED
NEUTRAL LUG
MECHANICAL
INTERLOCK AUX.
CONTACT FOR
HYDRAULIC
ELEVATORS WITH
AUTOMATIC RECALL
(5 A,120 V AC)
FIRE ALARM
SHUNT TRIP
VOLTAGE
MONITORING
RELAY
OPTIONAL
ENCLOSURE
SURGE
PROTECTION
DEVICE
AZ OPTION
(BYBASS FIRE
ALARM DURING
MAINTENANCE
TEST)
REQUIRED REQUIRED REQUIRED OPTIONAL OPTIONAL OPTIONAL REQUIRED REQUIRED OPTIONAL OPTIONAL OPTIONAL** BASE RATING RATING OPTION CODE RATING OPTION CODE RATING OPTION CODE RATING OPTION CODE RATING OPTION CODE RATING OPTION CODE RATING OPTION CODE RATING OPTION CODE OPTION CODE OPTION CODE
LPS3* 30 A 208 V T20 24 V dc Coil R2 120 V K Red R 30 A N6 1 NO & 1 NC A 1-Pole F1 NEMA 3R U S -AZ
LPS6* 60 A 240 V T24 120 V ac Coil R1 Green G 60 A N6 2 NO & 2 NC B 3-Pole F3 NEMA 4 Y
LPS1* 100 A 480 V T48 White W 100 A N1 NEMA 12 Z
LPS2* 200 A 200 A N2
LPS4* 400 A 400 A N4
*Part Numbers: Any voltage can be paired with any amperage. Options can be any combination but the ratings must match the option code. Not all options are required. Contact factory for
600 V control power transformer option.
** All switches with “-AZ” option automatically include option codes B and F3. The B and F3 option codes are not used in part number system but will be included in the unit.
Note: When ordering - desired options must be listed in the order shown above. Typical options include Control Power Transformer, Fire Safety Interface Relay,
Mechanical Interlock Auxiliary Contact and Fire Alarm Voltage Monitoring Relay.
Example Catalog Number from Desired Options
Dimensions of Enclosure
CATALOG
SERIES
AMPERE
RATING
NEMA 1
DIMENSIONS
NEMA 3R
DIMENSIONS
NEMA 4, 12
DIMENSIONS LUG SIZE SHIPPING
WEIGHT (LBS)
LPS3 30 24”H x 20”W x 9”D 24”H x 20”W x 8”D 24”H x 20”W x 10”D #14 - #8 AL or CU 75
LPS6 60 24”H x 20”W x 9”D 24”H x 20”W x 8”D 24”H x 20”W x 10”D #14 - #2 AL or CU 75
LPS1 100 24”H x 20”W x 9”D 24”H x 20”W x 8”D 24”H x 20”W x 10”D #8 - 1/0 AL or CU 75
LPS2 200 30”H x 20”W x 9”D 30”H x 24”W x 8”D 30”H x 20”W x 10”D #6 - 250 kcmil AL or CU 85, 115*, 120**
LPS4 400 48”H x 36”W x 10”D 48”H x 36”W x 12”D 48”H x 36”W x 10”D (2) 250 kcmil - 3/0 AL or CU 225
* NEMA 3R
** NEMA 4 & NEMA 12
Note: Over-size enclosures used to accommodate control power transformer, interface relay and terminal blocks.
Ordering Information
Complete catalog numbers consist of switch catalog numbers and the desired options. See example below.
Littelfuse XPress-Ship™ service offers 48 hours** direct-shipment
service on select fully-loaded LPS Series Shunt Trip Disconnect
Switches to meet your urgent system requirements on time.
XPress-Ship™ switches include three JTD_ID Series
fuses rated at the device’s maximum ampacity.
AMPERE
RATING
VOLTAGE
RATING CATALOG NUMBER XPress-Ship™
ORDERING NUMBER
60 A 208 V LPS6T20R1KGN6BF3-AZ XPS6T20R1KGN6F3-AZ*
60 A 480 V LPS6T48R1KGN6BF3-AZ XPS6T48R1KGN6F3-AZ*
100 A 208 V LPS1T20R1KGN1BF3-AZ XPS1T20R1KGN1F3-AZ*
100 A 480 V LPS1T48R1KGN1BF3-AZ XPS1T48R1KGN1F3-AZ*
100 A 480 V LPS1T48R1KGN1BF3 XPS1T48R1KGN1BF3
200 A 208 V LPS2T20R1KGN2BF3-AZ XPS2T20R1KGN2F3-AZ*
200 A 480 V LPS2T48R1KGN2BF3 XPS2T48R1KGN2BF3
*AZ option includes B & F3 options.
**XPress-Ship™ 48 hour service requires ordering from XPress-Ship™ Ordering Numbers shown above and is subject to a maximum of any combination of three switches per customer order.
XPress-Ship™ service offers 48 hour shipment from the factory through standard ground transportation. For expedited delivery, contact your local Littelfuse Representative.
XPress-Ship™
US Only
LPS1 T20 R1 K G N1 B F3 U S -AZ = Littelfuse Catalog Number LPS1T20R1KGN1BF3US-AZ
Littelfuse.com 246 © 2022 Littelfuse, Inc.
Pre-Engineered Solutions
Pre-Engineered Solutions
8
LPS SERIES SHUNT TRIP DISCONNECT SWITCH
Shunt-Trip Operation
The disconnecting means is a shunt-trip operated switch. The control power source for the shunt-trip operator is a 120 V ac
supply originating in the Littelfuse LPS Series disconnect. Current to the shunt-trip device is switched by an isolation relay,
which is in turn controlled by the FACP (Fire Alarm Control Panel).
The control signal may be either 24 V dc from the FACP (option R2) or a “dry” contact closure in the FACP (option R1).
In the case of a “dry” contact closure, the sensing voltage is 120 V ac originating in the Littelfuse LPS Series disconnect.
CAUTION: When using the “dry” contact closure, option R1, DO NOT supply 120 V ac from the FACP as equipment
damage or personnel injury may occur.
A key test option (option K) is available to test the shunt-trip circuit.
Supervisory Indication
Additionally, an optional separate relay can be specified to monitor the 120 Vac control power source in the Littelfuse LPS
Series disconnect. This relay (option FR) is used to provide supervisory indication of “Control Power Available” as required by
NFPA 72 Section 6.15.4.4.
SCCR Table
CURRENT RATING INTERRUPTING RATINGS (KA)
208 V AC 240 V AC 480 V AC 600 V AC
30A 150 150 65 25
60A 150 150 65 25
100A 150 150 65 25
200A 150 150 65 25
All Littelfuse LPS Series disconnect switches are UL Listed and designed for safe access by qualified personnel. When
maintenance or shutdown service is required, no energized parts are exposed inside the enclosure when the disconnect
switch is manually turned to the OFF position. For proper maintenance safety precautions, always turn off incoming power
to the Littelfuse LPS Series switch when possible. When servicing any live electrical equipment, always wear appropriate
personal protective equipment.
Fuse Table
DISCONNECT SWITCH
VOLTAGE/TRANSFORMER TYPE
PRIMARY FUSES (2) SECONDARY FUSE (1) SPD PART
FUSE TYPE FUSE RATING (AMPS) FUSE TYPE FUSE RATING (AMPS) NUMBER
208/120 V ac KLDR001 1 FLM1.12 1-1/8 SPD2-150-3P0-R
240/120 V ac KLDR.500 1/2 FLM1.12 1-1/8 SPD2-150-3P0-R
480/120 V ac KLDR.400 4/10 FLM1.12 1-1/8 SPD2-350-3P0-R
600/120 V ac KLDR.250 1/4 FLM1.12 1-1/8 SPD2-480-3P0-R
Power Wiring Torque Specifications
CHARACTERISTICS LPS3 LPS6 LPS1 LPS2 LPS4
Amps 30 60 100 200 400
MCS Wire Size 14 - 1/0 14 - 1/0 14 - 1/0 4 - 300 kcmil (2) 3/0 - 250 kcmil
Molded Case Switch (MCS) Mfr. ABB ABB ABB ABB ABB
MCS Catalog No. XT2HU3125DFF000XXX XT2HU3125DFF000XXX XT2HU3125DFF000XXX XT4HU3250DFF000XXX T5H400DWS4
MCS Lug Type KXT2CUAL1 KXT2CUAL1 KXT2CUAL1 KXT4CUAL2C KT5400-3
MCS Lug Torque (in-lbs) 50 in-lb* 50 in-lb* 50 in-lb* 200 in-lb* 275 in-lb*
Fuse Block Mfr. LITTELFUSE LITTELFUSE LITTELFUSE LITTELFUSE LITTELFUSE
Fuse Block Catalog No. LFJ60030-3 LFJ60060-3 LFJ60100-3 LFJ60200-3 LFJ60400-3
Fuse Lug Torque (in-lbs) 25 in-lb† 45 in-lb† 120 in-lb† 275 in-lb† 275 in-lb†
Neutral Lug Mfr. LITTELFUSE LITTELFUSE LITTELFUSE LITTELFUSE LITTELFUSE
Neutral Lug Catalog No. LS21211 LS21211 LS21211 LS31231 LS455712
Neutral Lug Torque (in-lbs) 35 in-lb† 45-120 in-lb† 120 in-lb† 275 in-lb† 500 in-lb†
Ground Lug Mfr. PANDUIT PANDUIT PANDUIT PANDUIT PANDUIT
Ground Lug Catalog No. LAMA 1/0-14-Q LAMA 1/0-14-Q LAMA 1/0-14-Q LAMA 250-56-Q LAMA 350-38-Q
Ground Lug Torque 25 in-lb‡ 45 in-lb‡ 120 in-lb‡ 275 in-lb‡ 275 in-lb‡
Note: Torque specs apply only to wire compression screws. Other requirements may exist for attachment of lugs and accessories to these devices. See manufacturer data.
*Per ABB.com
† Littelfuse Device nameplate data.
‡ Panduit, “Torque Chart for Aluminum Mechanical Connectors”.
© 2022 Littelfuse, Inc. 247 Littelfuse.com
Section Overview
System overvoltage is a growing concern in the electrical industry.
Component miniaturization has resulted in increased sensitivity
to many devices. The majority of these devices are unable to
handle high currents that result from Electrostatic Discharge (ESD)
and other voltage transients. Littelfuse® offers a broad range of
overvoltage protection to safeguard against these conditions.
Industrial Varistor Products ....................................................... 248
LVSP Series Surge Suppression Fuses .................................... 250
BVSP Series Surge Protection Device.......................................251
SUPPRESSION PRODUCTS
Table of Contents
Littelfuse.com 248 © 2022 Littelfuse, Inc.
Suppression Products
Suppression Products
9
Suppression Products
OVERVOLTAGE SUPPRESSION PRODUCTS
Varistors, Surge Fuses and Varistor Assemblies
What Are Transients?
Transients are short duration surges of electrical energy that
result from the sudden release of previously stored energy.
In terms of electrical and electronic circuits, this energy can
be released through intentional, controlled switching action,
or induced into a circuit from external sources. If the
voltage magnitude of the transient is large enough, circuit
component damage or malfunction of the circuit may result.
Transient Voltage Scenarios
The switching of inductive loads generates high energy
transients that increase in magnitude with increasingly
heavy loads. When the inductive load is switched off, the
collapsing magnetic field is converted into electrical energy,
which takes the form of a double exponential transient.
Depending on the source, these transients can be as large
as hundreds of volts and hundreds of amps with duration
times of 400 milliseconds.
Typical sources of inductive transients are:
• Generators • Motors
• Relays • Transformers
These examples are extremely common in electrical and
electronic systems. Because the sizes of the loads vary
according to the application, the wave shape, duration,
peak current, and peak voltage are all variables which
exist in real world transients. Once these variables
can be approximated, a suitable suppressor technology
can be selected.
Overvoltage Applications
• Industrial, High Energy AC Products such as Solenoids,
Motor Drives and Robotics
• Telecommunications Products
• UPS, AC Panels, Power Supplies, Circuit Breakers
(TVSS Products)
• Portable and Automotive Electronic Equipment
Lightning Induced Transients
Transients induced by lightning are not the result of a direct
strike. When a lightning strike occurs, the event creates
a magnetic field which can induce transients of large
magnitude in nearby electrical cables.
Technological Solutions for
Transient Threats
Because of the various types of transients and applications,
it is necessary to employ protection devices with different
characteristics in different applications. Littelfuse offers the
broadest range of circuit protection technologies.
Overvoltage Protection Portfolio Includes:
MOVs (Metal Oxide Varistors)
A ceramic technology that offers medium to very high
energy ratings for a wide range of applications. Available in
screw terminal, radial, square and axial leaded connections.
Discrete TVS Diode
This Silicon Avalanche Diode Technology is available in
surface mount and axial leaded packages. It offers protection
from medium to very high energy transients and can be
used in wide range of applications.
Transient Sources and Magnitude
VOLTAGE CURRENT RISE-TIME DURATION
Lightning 25 kV 20 kA 10 µs 50 ms
Switching 600 V 500 A 50 µs 500 ms
EMP 300 kV 10 A 20 ns 1 ms
ESD 15 kV 30 A 1-5 ns 100 ns
© 2022 Littelfuse, Inc. 249 Littelfuse.com
Suppression Products
Suppression Products
9
OVERVOLTAGE SUPPRESSION PRODUCTS
Varistors, Surge Fuses and Varistor Assemblies
Industrial High Energy Terminal MOV
SERIES
NAME1
OPERATING
AC VOLTAGE
RANGE
OPERATING
DC VOLTAGE
RANGE
PEAK
CURRENT
RANGE2
(A)
PEAK
ENERGY
RANGE3
OPERATING
TEMPERATURE
RANGE
MOUNT/
FORM
FACTOR
DISC SIZE
AGENCY
ROHS
LEAD FREE
UL
CSA
BA/BB 130-2800 175-3500 50,000
70,000 450-10,000
-55 to +85°C
Screw /
Clip
Terminals
60 mm • •
DA/DB 130-750 175-970 40,000 270-1050 40 mm • • •
HA 130-750 175-970 25,000
40,000 200-1050
Industrial
Packaged
Radial Leads
32, 40 mm • • • •
TMOV34S® 115-750 — 40,000 235-1050 34 mm • • •
HB34,
HG34, HF34 130-750 175-970 40,000 270-1050 34 mm • • • •
DHB34 250-2800 330-3500 20,000
70,000 330-10,000 34 mm •
CA 250-2800 330-3500 20,000
70,000 330-10,000 Bare Disc 60 mm •
High Power TVS Diodes
SERIES
NAME1
PACKAGE
TYPE
REVERSE STANDOFF
VOLTAGE (VR
)
PEAK PULSE
POWER RANGE 1
(PPP)
PEAK PULSE
CURRENT
(I
PP 8x20µs)
OPERATING
TEMPERATURE
HALOGEN
FREE
ROHS
COMPLIANT
15KPA P600 17-280 15,000 W
Not Applicable -85° to +302° F
(-55° to +175° C)
• •
20KPA P600 20.0-300 20,000 W • •
30KPA P600 28.0-288 30,000 W • •
AK6 Radial Lead 58-430 NA 6,000 A
-67° to +347° F
(-55° to +150° C)
• •
AK10 Radial Lead 58-430 NA 10,000 A • •
Radial Leaded MOV
SERIES
NAME1
OPERATING
AC VOLTAGE
RANGE
OPERATING
DC VOLTAGE
RANGE
PEAK
CURRENT
RANGE2
(A)
PEAK
ENERGY
RANGE3
OPERATING
TEMPERATURE
RANGE
MOUNT/
FORM
FACTOR
DISC SIZE
AGENCY
ROHS
LEAD FREE
UL
CSA
VDE
CECC
TMOV®/iTMOV® 115-750 — 6000-10,000 35-480
-55 to +85°C Radial
Leaded
14, 20, 34 mm • • • • • •
TMOV®
25S 115-750 — 20,000 170-670 25 mm •
• •
UltraMOVTM 130-625 170-825 1750-10,000 12.5-720 7, 10, 14, 20,
25 mm • • • • • •
UltraMOVTM 25S 115-750 150-970 22,000 230-890 25 mm • • • • • •
C-III 130-660 3500-9000 40-530 10, 14, 20 mm • • • • •
LA 130-1000 175-1200 1200-6500 11-360 7, 10, 14,
20 mm • • • • • •
ZA 4-460 5.5-615 50-6500 0.1-52 5, 7, 10, 14,
20 mm • • • • •
1. Detailed information about most product series listed here can be found on littelfuse.com/varistor
2. Not an applicable parameter for Crowbar devices
3. Value shown in Joules
Littelfuse.com 250 © 2022 Littelfuse, Inc.
Suppression Products
Suppression Products
9
LVSP SURGE SUPPRESSION FUSE
600 V ac • 5–100 kA 8/20 µs
Description
The Littelfuse Varistor Protection (LVSP) Fuses are intended
for the protection of TVSS products. The LVSP series has
been designed to survive 8/20 µs lightning surges without
opening. This allows the TVSS to perform the necessary
suppression. The LVSP is not rated for continuous current
and the ratings are specific 8/20 µs surge capability.
The LVSP series can be used to facilitate TVSS module
compliance to UL 1449 in permanently connected
applications (abnormal overvoltage, unlimited current
conditions).
Features/Benefits
Very current limiting under AC short-circuit conditions
Available in multiple mounting configurations
(cartridge, bolt-in, PC board mount)
Provides short circuit protection in TVSS systems and
complements the Littelfuse line of overvoltage products
(HA, HB34, TMOV® and iTMOV® varistors as well
as the AK-10 series TVS diodes)
Applications
TVSS products
Surge Protective Devices
Specifications
Voltage Rating 600 V ac
Interrupting Rating 200 kA
Surge Withstand Rating 5–100 kA 8/20 µs surge withstand
Approvals UL Recognized (File: E71611)
Environmental RoHS Compliant
Applicable Standards UL 248-1
Recommended Fuse Blocks
LVSP (5-20)-2
L60030M (open block) • LPSM (dead front)
LVSP (30-80)-2
LFJ60030 (open block) • LFPSJ30 (dead front)
LVSP (100)
LFJ60100 (open block)
Web Resources
Download other technical information:
littelfuse.com/LVSP
Electrical Specifications SURGE RATING (KA 8/20 µs) RATING CODE VOLTAGE RATING (V) INTERRUPT RATING (KA)
CARTRIDGE LEADED BOLT-IN
NOMINAL
MELTING
I
2
T (A2
S)
NOMINAL
CLEARING
I
2
T (A2
S)
Ipeak@100 kA
60 Hz (A) CATALOG
NUMBER
ORDERING
NUMBER
CATALOG
NUMBER
ORDERING
NUMBER
CATALOG
NUMBER
ORDERING
NUMBER
5 0005 600 200 LVSP5-2 LVSP0005TX2 LVSP5-R LVSP0005TXR – – 359 981 3,700
10 0010 600 200 LVSP10-2 LVSP0010TX2 LVSP10-R LVSP0010TXR – – 1,300 3,210 5,823
15 0015 600 200 LVSP15-2 LVSP0015TX2 LVSP15-R LVSP0015TXR – – 3,267 6,235 7,765
20 0020 600 200 LVSP20-2 LVSP0020TX2 LVSP20-R LVSP0020TXR – – 4,940 11,710 8,135
30 0030 600 200 LVSP30-2 LVSP0030TX2 – – LVSP30 LVSP0030T 11,950 35,325 12,478
40 0040 600 200 LVSP40-2 LVSP0040TX2 – – LVSP40 LVSP0040T 20,550 61,700 15,250
60 0060 600 200 LVSP60-2 LVSP0060TX2 – – LVSP60 LVSP0060T 39,240 145,555 19,604
80 0080 600 200 LVSP80-2 LVSP0080TX2 – – LVSP80 LVSP0080T 75,000 254,000 24,600
100 0100 600 200 – – – – LVSP100-L LVSP0100VXL 160,747 413,000 36,600
© 2022 Littelfuse, Inc. 251 Littelfuse.com
Suppression Products
Suppression Products
9
LVSP SURGE SUPPRESSION FUSE
.328
(8.33)
1.5
(38.1)
.410
(10.41)
2.25
(57.15)
.812
(20.62)
.328
(8.33)
1.53
(38.86)
.410
(10.41)
Cartridge 5-20 kA
Bolt-In 30-80 kA
Cartridge 30-80 kA
Bolt-In 100 kA
Leaded 5-20 kA
2.25
(57.15)
3.04
(77.21)
.816
(20.73)
Dimensions Inches (mm)
4.62
(117.35)
3.62
(91.95) 2.62
(66.55)
Littelfuse.com 252 © 2022 Littelfuse, Inc.
Suppression Products
Suppression Products
9
BVSP SERIES SURGE PROTECTION DEVICE
600 Vac • 10 kA
Specifications
Voltage Rating 600 Vac
Interrupting Rating 200 kA
Ratings 10 kA 8 x 20 µs surge withstand
Ordering Information
SERIES
8 X 20 µS
SURGE
RATING (A)
PACKAGE
QUANTITY
MOUNTING
METHOD
CATALOG
NUMBER
ORDERING
NUMBER
BVSP 10,000 10 Ferrule BVSP10-2 BVSP0010TX2
BVSP 10,000 10 PCB Tabs BVSP10-R BVSP0010TXR
Electrical Specifications
CATALOG
NUMBER
8 X 20 µS
SURGE
RATING (A)
NOMINAL
MELTING I2
T
(A2
S)
NOMINAL
CLEARING I2
T
(A2
S)
Ipeak @ 200 kA
60 HZ (A)
BVSP10-2 10,000 1,580 9,960 8,160
BVSP10-R 10,000 1,580 9,960 8,160
Dimensions Inches (mm)
.328
(8.33)
1.5
(38.1)
.410
(10.41)
.328
(8.33)
1.53
(38.86)
.410
(10.41)
Ferrule Version PCB Version
Description
The Littelfuse® BVSP surge protection device (SPD) is
intended for the protection of transient voltage surge
suppressions (TVSS) systems. The BVSP series has been
designed to survive the 8 x 20 µs lightning surges described
in various standards (UL 1449, IEC 61000-4-5 and IEEE
C62.41) without opening. This allows the TVSS to perform
the necessary suppression. The BVSP is not rated for
continuous current and the ratings are specific 8 x 20 µs
surge capability. The BVSP series can be used to facilitate
TVSS module compliance to UL 1449 in permanently
connected applications (abnormal overvoltage, unlimited
current conditions).
Features/Benefits
• Very current limiting under AC short-circuit conditions
• Available in ferrule and printed circuit board (PCB)
configurations
• Provides short circuit protection in TVSS systems and
complements the Littelfuse line of overvoltage products
(HA, HB34, TMOV® and iTMOV® varistors as well
as the AK-10 series TVS diodes)
Applications
• TVSS products
• Surge arrestors
Recommended Fuse Holders
L60030M (open block)................................................... 107
LPSM (dead front) ......................................................... 117
© 2022 Littelfuse, Inc. 253 Littelfuse.com
Fuse Reducers ................................................................................... 254
Box Cover Units ................................................................................. 255
Fuse Replacement & Custom Kits ................................................... 256
Electronic Fuse Display & Spare Fuse Cabinet................................ 257
Table of Contents
Section Overview
Miscellaneous Accessories include custom-built solutions designed
specifically to meet code requirements, fuse reducers, box cover units
and an assortment of useful fuse and holder accessories.
MISCELLANEOUS PRODUCTS
Littelfuse.com 254 © 2022 Littelfuse, Inc.
Miscellaneous Products
Miscellaneous
10
FUSE REDUCERS
¶Fuse and reducer combination is slightly larger in diameter than 100 A Class J fuses. For
specific applications, contact factory.
Class J reducers cannot be used in bolt-on applications.
Description
Littelfuse® fuse reducers allow smaller size fuses to be
installed into existing fuse clips to prevent overfusing.
Features/Benefits
• Simple installation
• Reduces inventory requirements
• Silver brazed joints for maximum strength
• UL Listed (File: E136855)
• CSA Certified (File: LR92899)
Web Resources
Download technical information: littelfuse.com/lruh
littelfuse.com/lrur
littelfuse.com/lruj
Dimensions
Refer to the fuse section of this catalog for fuse dimensions.
Recommended Fuses
Class H/K5 Fuse Reducers
NLN / NLS...........................................................................20
Class R Fuse Reducers
FLNR / FLSR....................................................................... 17
FLNR_ID / FLSR_ID ............................................................ 17
IDSR ................................................................................... 16
LLNRK / LLSRK................................................................... 13
LLSRK_ID ........................................................................... 13
KLNR / KLSR....................................................................... 15
Class J Fuse Reducers
JTD_ID / JTD ..............................................................................21
JLS ..............................................................................................22
600 Volt
CATALOG / ORDERING NUMBER FUSE CLIP FUSE
CLASS H/K5 CLASS R CLASS J CASE SIZE
LRU 663 LRU 663 R LRUJ63 60 A 30 A
LRU 216 LRU 216 R LRUJ13 100 A 30 A
LRU 616 LRU 616 R LRUJ16¶ 100 A 60 A
LRU 626 LRU 626 R LRUJ26 200 A 60 A
LRU 2621 LRU 2621 R LRUJ21 200 A 100 A
LRU 2641 LRU 2641 R LRUJ41 400 A 100 A
LRU 2642 LRU 2642 R LRUJ42 400 A 200 A
LRU 2661 LRU 2661 R — 600 A 100 A
LRU 2662 LRU 2662 R — 600 A 200 A
LRU 2664 LRU 2664 R† LRUJ64 600 A 400 A
†Only one reducer required.
Ordering Information
250 Volt
CATALOG / ORDERING NUMBER FUSE CLIP FUSE
CLASS H/K5 CLASS R CASE SIZE
LRU 263 LRU 263 R 60 A 30 A
LRU 213 LRU 213 R 100 A 30 A
LRU 216 LRU 216 R 100 A 60 A
LRU 226 LRU 226 R 200 A 60 A
LRU 2621 LRU 2621 R 200 A 100 A
LRU 2641 LRU 2641 R 400 A 100 A
LRU 2642 LRU 2642 R 400 A 200 A
LRU 2661 LRU 2661 R 600 A 100 A
LRU 2662 LRU 2662 R 600 A 200 A
LRU 2664 LRU 2664 R* 600 A 400 A
*Only one reducer required.
© 2022 Littelfuse, Inc. 255 Littelfuse.com
Miscellaneous Products
Miscellaneous
10
BOX COVER UNITS
Description
Provide economical method of protecting small motors
against overcurrent damage.
Applications
• Edison-Base plug fuses (TOO, TLO)
• Type S plug fuses (SOO, SLO) with adapters (SAO)
Specifications
Voltage Rating 125 V
Max Ampere Rating 15 A
Approvals UL Listed parts (Except LSSY-RL)
Web Resources
Sample requests, downloadable CAD drawings and other
technical information: www.littelfuse.com/boxcover
FIGURE
NUMBER
LITTELFUSE
PART NUMBER
BOX COVER FEATURES
TO BE
EDISON BASE MOUNTED ON FUSE HOLDER
GROUNDING
RECEPTACLE
SINGLE POLE
SWITCH
TWO POLE
SWITCH
PILOT
LIGHT
1
LSOU 1 — — — — 2-1⁄4" Handy Box
LSOW 1 — — — — 2-3⁄4” Switch Box
LSOX 1 — — — — 4" Octagon Box
LSOY 1 — — — — 4" Square Box
2
LSRU* 1 1 — — — 2-1⁄4" Handy Box
LSRW 1 1 — — — 2-3⁄4” Switch Box
LSRY 1 1 — — — 4" Square Box
3
LSSU* 1 — 1 — — 2-1⁄4" Handy Box
LSSW 1 — 1 — — 2-3⁄4" Switch Box
LSSX 1 — 1 — — 4" Octagon Box
LSSY* 1 — 1 — — 4" Square Box
4 LSOY-B 2 — — — — 4" Square Box
5 LSSY-L 1 — 1 — 1 4" Square Box
6 LSSY-RL 1 1 1 — 1 4" Square Box
7 LSCY 2 — 2 — — 4" Square Box
8 LSKA 2 1 (250V) — — — 4-11⁄16" Square Box
9 LSTY 2 — — 1 — 4" Square Box
*UL Listed (File No. E308725)
Littelfuse.com 256 © 2022 Littelfuse, Inc.
Miscellaneous Products
Miscellaneous
10
FRCK SERIES FUSE REPLACEMENT & CUSTOM KITS
Description
Fuse Replacement and Custom Kits help reduce downtime
by providing mobile storage and organization for replacement
fuses. The FRCK Series provides a custom solution that can
be filled with multiple fuse series that are more common or
specific to your needs or application.
Features/Benefits
n Custom sized compartments fit various fuse series
n Large kit features a convenient handle for carrying
n Kits are sold empty for complete customization
n Each kit comes with a blank label on the inside cover
so users can write in part numbers or use bar code
labels to help with refills.
Web Resources
Additional information: littelfuse.com/kits
Ordering Information
KIT SIZE DIMENSIONS
L X W X H (INCHES) DESCRIPTION CATALOG NUMBER
Large 16.00 x 12.00 x 10.00 Mobile organizer with 2 small and 3 medium drawers;
Unique FRACK Label for Oil & Gas FRCK-OG
Large 16.00 x 12.00 x 10.00 Mobile organizer with 2 small and 3 medium drawers FRCK-LG
Medium 14.00 x 9.13 x 2.00 14” organizer with adjustable dividers FRCK-MD
Small 8.25 x 4.25 x 1.00 8” organizer with up to 6 compartments FRCK-SM
FRCK-OG & FRCK-LG FRCK-MD FRCK-SM
© 2022 Littelfuse, Inc. 257 Littelfuse.com
Miscellaneous Products
Miscellaneous
10
FUSE DISPLAYS AND CABINETS
3AB (CERAMIC)
NORMAL-BLO FUSES
3AB (CERAMIC)
SLO-BLO® FUSES
QUANTITY CATALOG
NUMBER QUANTITY CATALOG
NUMBER
25 314 15A 25 326 8A
25 314 20A 20 326 10A
25 314 30A — —
Description
• Steel cabinet with piano hinges that can be locked
to prevent unauthorized access. Weather stripped to
reduce the accumulation of dust, dirt and moisture
• Convenient inventory card located inside door.
Measures 30"H × 24" W × 12"D. Keyhole mounting
holes 16" on center for easy installation
Ordering Information
TYPE CATALOG NUMBER ORDERING NUMBER
Spare Fuse Cabinet LSFC LSFC
Spare Keys LKEY001 LKEY0001Z
Description
This wall-mountable or free-standing modular rack system
prominently displays Littelfuse glass and automotive fuses.
Additional sections can be quickly snapped on for a larger
product selection. Each rack features a cross reference
guide to help customers locate the proper replacement fuse.
Features/Benefits
• Holds 720 (144 5-packs) of the most popular glass,
ceramic, and automotive fuses
• Designed to save space—measures 14"H × 9"W × 4"D
Suitable for wall or counter mounting
• Includes cross reference, product identification
guide, and back-up card for easy reordering
• Expandable with modular section that can hold
240 fuses (48 5-packs) per section
Web Resources
Additional information: littelfuse.com/lsfc
Fully stocked rack includes the following parts
3AG (GLASS)
FAST ACTING FUSES
3AG (GLASS)
SLO-BLO® FUSES
QUANTITY CATALOG
NUMBER QUANTITY CATALOG
NUMBER
25 312 1⁄ 2A 25 313 1⁄ 2A
50 312 1A 25 313 3⁄ 4A
25 312 1 1⁄ 2A 25 313 1A
75 312 2A 25 313 1 1⁄ 2A
25 312 2 1⁄ 2A 50 313 2A
75 312 3A 25 313 2 1⁄ 2A
25 312 4A 25 313 3A
25 312 5A 25 313 4A
25 312 10A 25 313 5A
Electronic Fuse Display
Spare Fuse Cabinet
Ordering Information
TYPE CATALOG NUMBER ORDERING NUMBER
Fully Stocked Display 094324PG 00940324ZXPG
Empty Display Rack FDR001PG 0FDR0001ZXPG
Additional Sections MRS001PG 0MRS0001ZXPG
Section Overview
This Technical Application Guide or ‘Fuseology’ section provides the
information needed to select the correct types of Littelfuse POWR-GARD®
fuses for most applications. If there are any questions or if additional
data is needed for a specific use, call the Littelfuse Technical Support
and Engineering Service Group at 1-800-TEC-FUSE (1-800-832-3873),
email them at techline@littelfuse.com or visit us at littelfuse.com.
Fuseology Fundamentals........................................................... 259
Selection Considerations........................................................... 261
Time-current Curves and Peak Let-through Charts.................... 265
Selective Coordination............................................................... 267
UL/CSA Fuse Classes and Applications..................................... 270
Terms and Definitions................................................................ 272
Motor Protection Tables............................................................. 279
Condensed Fuse Cross Reference ............................................ 282
Alphanumeric Index of Catalog Numbers.................................. 281
Table of Contents
Technical Information
White papers, and a library
of technical information is
available online at
littelfuse.com/technicalcenter
TECHNICAL APPLICATION GUIDE
Littelfuse.com 258 © 2022 Littelfuse, Inc.
© 2022 Littelfuse, Inc. 259 Littelfuse.com
Technical Application Guide
Technical
11
FUSEOLOGY FUNDAMENTALS
I. OVERCURRENT PROTECTION
FUNDAMENTALS
(FUSES AND HOW THEY WORK)
Introduction
An important part of developing quality overcurrent protection
is an understanding of system needs and overcurrent
protective device fundamentals. This section discusses these
topics with special attention to the application of fuses. If you
have additional questions, call our Technical Support Group at
1-800-TEC-FUSE (1-800-832-3873). Definitions of terms used
in this section are located towards the end of this Technical
Application Guide.
Why Overcurrent Protection?
All electrical systems eventually experience overcurrents.
Unless removed in time, even moderate overcurrents
quickly overheat system components, damaging insulation,
conductors, and equipment. Large overcurrents may melt
conductors and vaporize insulation. Very high currents
produce magnetic forces that bend and twist bus bars.
These high currents can pull cables from their terminals and
crack insulators and spacers.
Too frequently, fires, explosions, poisonous fumes and
panic accompany uncontrolled overcurrents. This not only
damages electrical systems and equipment, but may cause
injury or death to personnel nearby.
To reduce these hazards, the National Electrical Code®
(NEC®), OSHA regulations, and other applicable design and
installation standards require overcurrent protection that will
disconnect overloaded or faulted equipment.
Industry and governmental organizations have developed
performance standards for overcurrent devices and testing
procedures that show compliance with the standards and
with the NEC. These organizations include: the American
National Standards Institute (ANSI), National Electrical
Manufacturers Association (NEMA), and the National
Fire Protection Association (NFPA), all of which work in
conjunction with Nationally Recognized Testing Laboratories
(NRTL) such as Underwriters Laboratories (UL).
Electrical systems must meet applicable code requirements
including those for overcurrent protection before electric
utilities are allowed to provide electric power to a facility.
What is Quality Overcurrent Protection?
A system with quality overcurrent protection has the
following characteristics:
1. Meets all legal requirements, such as NEC®, OSHA, local
codes, etc.
2. Provides maximum safety for personnel, exceeding
minimum code requirements as necessary.
3. Minimizes overcurrent damage to property, equipment,
and electrical systems.
4. Provides coordinated protection. Only the protective
device immediately on the line side of an overcurrent
opens to protect the system and minimize unnecessary
downtime.
5. Is cost effective while providing reserve interrupting
capacity for future growth.
6. Consists of equipment and components not subject to
obsolescence and requiring only minimum maintenance
that can be performed by regular maintenance personnel
using readily available tools and equipment.
Overcurrent Types and Effects
An overcurrent is any current that exceeds the ampere rating of
conductors, equipment, or devices under conditions of use. The
term “overcurrent” includes both overloads and short-circuits.
Overloads
An overload is an overcurrent confined to normal current
paths in which there is no insulation breakdown.
Sustained overloads are commonly caused by installing
excessive equipment such as additional lighting fixtures
or too many motors. Sustained overloads are also caused
by overloading mechanical equipment and by equipment
breakdown such as failed bearings. If not disconnected
within established time limits, sustained overloads
eventually overheat circuit components causing thermal
damage to insulation and other system components.
Overcurrent protective devices must disconnect circuits and
equipment experiencing continuous or sustained overloads
before overheating occurs. Even moderate insulation
overheating can seriously reduce the life of the components
and/or equipment involved. For example, motors overloaded
by just 15% may experience less than 50% of normal
insulation life.
Temporary overloads occur frequently. Common causes
include temporary equipment overloads such as a machine
tool taking too deep of a cut, or simply the starting of an
inductive load such as a motor. Since temporary overloads
are by definition harmless, overcurrent protective devices
should not open or clear the circuit.
It is important to realize that fuses selected must have
sufficient time-delay to allow motors to start and temporary
overloads to subside. However, should the overcurrent
continue, fuses must then open before system components
are damaged. Littelfuse POWR-PRO® and POWR-GARD®
time-delay fuses are designed to meet these types of
protective needs. In general, time-delay fuses hold 500% of
the rated current for a minimum of ten seconds, yet will still
open quickly on higher values of current.
Littelfuse.com 260 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
Even though government-mandated high-efficiency motors
and NEMA Design E motors have much higher locked rotor
currents, POWR-PRO® time-delay fuses such as the FLSR_
ID, LLSRK_ID, or IDSR series have sufficient time-delay to
permit motors to start when the fuses are properly selected
in accordance with the NEC®.
Short-Circuits
A short-circuit is an overcurrent flowing outside of its normal
path. Types of short-circuits are generally divided into
three categories: bolted faults, arcing faults, and ground
faults. Each type of short-circuit is defined in the Terms and
Definitions section.
A short-circuit is caused by an insulation breakdown or
faulty connection. During a circuit’s normal operation, the
connected load determines current. When a short-circuit
occurs, the current bypasses the normal load and takes a
“shorter path,” hence the term ‘short-circuit’. Since there is
no load impedance, the only factor limiting current flow is
the total distribution system’s impedance from the utility’s
generators to the point of fault.
A typical electrical system might have a normal load impedance
of 10 ohms. But in a single-phase situation, the same system
might have a load impedance of 0.005 ohms or less. In order
to compare the two scenarios, it is best to apply Ohm’s Law (I
= E/R for AC systems). A 480 volt single-phase circuit with the
10 ohm load impedance would draw 48 amperes (480/10 = 48).
If the same circuit has a 0.005 ohm system impedance when
the load is shorted, the available fault current would increase
significantly to 96,000 amperes (480/0.005 = 96,000).
As stated, short-circuits are currents that flow outside
of their normal path. Regardless of the magnitude of
overcurrent, the excessive current must be removed quickly.
If not removed promptly, the large currents associated
with short-circuits may have three profound effects on an
electrical system: heating, magnetic stress, and arcing.
Heating occurs in every part of an electrical system when
current passes through the system. When overcurrents
are large enough, heating is practically instantaneous. The
energy in such overcurrents is measured in ampere-squared
seconds (I2
t). An overcurrent of 10,000 amperes that lasts for
0.01 seconds has an I2
t of 1,000,000 A2
s. If the current could
be reduced from 10,000 amperes to 1,000 amperes for the
same period of time, the corresponding I2
t would be reduced
to 10,000 A2
s, or just one percent of the original value.
If the current in a conductor increases 10 times, the I2
t
increases 100 times. A current of only 7,500 amperes
can melt a #8 AWG copper wire in 0.1 second. Within
eight milliseconds (0.008 seconds or one-half cycle), a
current of 6,500 amperes can raise the temperature of #12
AWG THHN thermoplastic insulated copper wire from its
operating temperature of 75°C to its maximum short-circuit
temperature of 150°C. Any currents larger than this may
immediately vaporize organic insulations. Arcs at the point
of fault or from mechanical switching such as automatic
transfer switches or circuit breakers may ignite the vapors
causing violent explosions and electrical flash.
Magnetic stress (or force) is a function of the peak current
squared. Fault currents of 100,000 amperes can exert forces
of more than 7,000 lb. per foot of bus bar. Stresses of this
magnitude may damage insulation, pull conductors from
terminals, and stress equipment terminals sufficiently such
that significant damage occurs.
Arcing at the point of fault melts and vaporizes all of the
conductors and components involved in the fault. The arcs
often burn through raceways and equipment enclosures,
showering the area with molten metal that quickly starts fires
and/or injures any personnel in the area. Additional short-circuits
are often created when vaporized material is deposited on
insulators and other surfaces. Sustained arcing-faults vaporize
organic insulation, and the vapors may explode or burn.
Whether the effects are heating, magnetic stress, and/or
arcing, the potential damage to electrical systems can be
significant as a result of short-circuits occurring.
II. SELECTION CONSIDERATIONS
Selection Considerations for Fuses (600 volts and below)
Since overcurrent protection is crucial to reliable electrical
system operation and safety, overcurrent device selection
and application should be carefully considered. When
selecting fuses, the following parameters or considerations
need to be evaluated:
• Current Rating
• Voltage Rating
• Interrupting Rating
• Type of Protection and Fuse Characteristics
• Current Limitation
• Physical Size
• Indication
Current Rating
The current rating of a fuse is the AC or DC current,
expressed in amperes, which the fuse is capable of carrying
continuously under specified conditions. Fuses selected
for a circuit must have ampere ratings that meet NEC®
requirements, namely those found in NEC® Articles 240 and
430. These NEC® requirements establish maximum ratings
and in some cases, minimum ratings. When selecting a
fuse, it is generally recommended to select a current rating
as close as possible to the system’s normal running current.
FUSEOLOGY FUNDAMENTALS
© 2022 Littelfuse, Inc. 261 Littelfuse.com
Technical Application Guide
Technical
11
Voltage Rating
The voltage rating of a fuse is the maximum AC or DC
voltage at which the fuse is designed to operate. Fuse
voltage ratings must equal or exceed the circuit voltage
where the fuses will be installed, and fuses used in DC
circuits must be specifically rated for DC applications. In
terms of voltage, fuses may be rated for AC only, DC only, or
both AC and DC. However, exceeding the voltage ratings or
using an AC only fuse in a DC circuit could result in violent
destruction of the fuse.
The standard 600 volt rated fuses discussed in this section
may be applied at any voltage less than or equal to their
rating. For example, a 600 volt fuse may be used in a 277
volt or even a 32 volt system, but not any system exceeding
600 volts.
NOTE: This does not apply to semiconductor fuses and medium
voltage fuses. See the semiconductor and medium voltage fuse
application information on littelfuse.com for voltage limitations
of these fuses.
Interrupting Rating
The interrupting rating of a fuse is the highest available
symmetrical rms alternating current that the fuse is required
to safely interrupt at its rated voltage under standardized test
conditions. A fuse must interrupt all overcurrents up to its
interrupting rating without experiencing damage. Standard
UL fuses are available with interrupting ratings of 10,000 A,
50,000 A, 100,000 A, 200,000 A, and 300,000 A.
NEC® Article 110.9 requires that all equipment intended
to break current at fault levels have an interrupting rating
sufficient for the system voltage and current available at
the equipment’s line terminals. Refer to Figure 1. It is vitally
important to select fuses with interrupting ratings which
equal or exceed the available fault current.
The recommendation to standardize on fuses with at least
a 200,000 ampere interrupting rating (AIR) ensures that all
fuses have an adequate interrupting rating while providing
reserve interrupting capacity for future increases in available
fault current.
300,000 AIR Fuses
Littelfuse POWR-PRO® fuse series have a Littelfuse SelfCertified interrupting rating of 300,000 amperes rms
symmetrical. The 300,000 ampere testing was performed
in a Nationally Recognized Testing Laboratory, and the tests
were UL witnessed. UL has ruled that fuses with a UL
interrupting rating greater than 200,000 amperes must be
marked as “Special Purpose Fuses” and may not be labeled
as UL Listed Class RK5, RK1, L, etc.
Type of Protection and Fuse Characteristics
Time current characteristics determine how fast a fuse
responds to overcurrents. All fuses have inverse time
characteristics; that is, the fuse opening time decreases as
the magnitude of overcurrent increases. When properly rated
in accordance with NEC® requirements, fuses provide both
overload and short-circuit protection to system conductors
and components. However, in some instances such as when
fuses are used to backup circuit breakers or to provide motor
branch circuit short-circuit and ground fault protection, fuses
provide only short-circuit protection. A fuse’s response to
overcurrents is divided into short-circuits and overloads.
Short-Circuits
A fuse’s short-circuit response is its opening time on highervalue currents. For power fuses, higher-value currents are
generally over 500-600% of the fuse’s current rating. As
stated earlier, all fuses have inverse time characteristics: the
higher the current, the faster the opening time. Since shortcircuits should be removed quickly, inverse time is especially
important for short-circuit protection.
Overloads
While fuses must disconnect overloaded conductors and
equipment before the conductors and components are
seriously overheated, they should not disconnect harmless
temporary overloads. To provide sufficient overload
protection for system conductors, UL has established
maximum fuse opening times at 135% and 200% of a
fuse’s current rating. All UL Listed fuses for application in
accordance with the National Electrical Code® must meet
these limits whether they are fast-acting or time-delay fuses.
As just stated, a fuse is designed to respond to two types
of overcurrents – short circuits and overloads. As a result,
selecting the proper fuse for a given application usually
involves deciding whether to use a time-delay fuse or a
fast-acting fuse. A more in-depth review of both possible
scenarios is important at this time.
SELECTION CONSIDERATIONS
Main Switchboard
Available Fault
Current = 125,000A
Available Fault
All fuses in main switchboard Current = 85,000A
must have an A.I.R. of at least
125,000A. Next higher standard
rating is 200,000A.
Fuses in panel must have at
least an 85,000 A.I.C. Next higher
standard rating is 100,000A., but
best choice is time-delay fuses
with 200,000 A.I.R.
Figure 1 – Interrupting Rating Requirements per NEC
Littelfuse.com 262 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
Fast-Acting (Normal-Opening) Fuses
Fast-acting fuses (sometimes called “Normal-opening”
fuses) have no intentional time-delay. Typical opening
times at 500% of the fuse ampere rating range from 0.05
second to approximately 2 seconds. Fast-Acting fuses
are suitable for non-inductive loads such as incandescent
lighting and general-purpose feeders, or branch circuits
with little or no motor load. When protecting motors and
other inductive loads, fast-acting fuses must be rated at
200-300% of load currents to prevent nuisance opening on
in-rush currents. Fuses with such increased ratings no longer
furnish adequate protection from overloads and only provide
short-circuit protection. Overload relays or other overload
protection devices must be provided to properly protect
conductors and equipment from overload conditions.
All fast-acting fuses provide fast short-circuit response
within their interrupting rating. Some are considered currentlimiting, such as UL Class T and Class J. Others are noncurrent-limiting, such as UL Class H.
Time-Delay (SLO-BLO®) Fuses
Most UL Class CC, CD, G, J, L, RK5 and RK1 fuses, plus
some of the UL Listed Miscellaneous fuses are considered
time-delay. If so, they are identified as such on the fuse
label with the words “Time-Delay”, “T-D”, “D”, or some
other suitable marking. Minimum time-delay varies with
the fuse class, and to some degree with the fuse ampere
rating. UL standards for POWR-GARD® fuse series FLNR,
FLNR_ID, FLSR, FLSR_ID, IDSR (UL Class RK5), LLNRK,
LLSRK, LLSRK_ID (UL Class RK1), and JTD, JTD_ID (UL
Class J) require these fuses to carry 500% rated current for a
minimum of 10 seconds. Standards for CCMR and KLDR (UL
Class CC and CD) and SLC (UL Class G) fuses require them
to carry 200% rated current for a minimum of 12 seconds.
Although there is no UL Classification for time-delay Class
L fuses, it is still permissible for them to be marked “TimeDelay.” The amount of time-delay is determined by the
manufacturer. Littelfuse KLPC series and KLLU series fuses
will hold 500% current for 10 seconds or more.
In addition to providing time-delay for surges and short time
overloads, time-delay fuses meet all UL requirements for
sustained overload protection. On higher values of current,
time-delay fuses are current-limiting; meaning they remove
large overcurrents in less than one-half cycle (0.00833
seconds). Time-delay fuses provide the best overall protection
for both motor and general purpose circuits, and eliminate
nuisance fuse opening and most situations of downtime.
Compared to fast-acting fuses, time-delay fuses can be
selected with ratings much closer to a circuit’s operating
current. For example, on most motor circuits Class RK5 and
RK1 fuses can be rated at 125-150% of a motor’s full load
current (FLA). This provides superior overload and shortcircuit protection, and often permits the use of smaller,
less expensive disconnect switches. Time-delay fuses
have gradually replaced most one-time (UL Class K5) and
renewable (UL Class H) fuses. Today, more than 50% of all
fuses sold by electrical distributors are time-delay fuses.
Dual Element Fuses
Littelfuse time-delay FLNR, FLNR_ID, FLSR, FLSR_ID, IDSR
(UL Class RK5), and LLNRK, LLSRK, LLSRK_ID (UL Class RK1),
and some JTD, JTD_ID (UL Class J) series fuses have true
dual-element construction meaning the fuse has an internal
construction consisting of separate short-circuit and overload
sections or elements. Time-delay elements are used for
overload protection, and separate fast acting fuse elements or
links are used to provide current-limiting short-circuit protection.
Very Fast-Acting Fuses
This category of fuses exists for limited applications. The
principle use of very fast acting fuses is to protect solidstate electronic components, such as semiconductors.
Fuse series designated as ‘High-Speed (Semiconductor)
Fuses’ have special characteristics including quick overload
response, very low I2
t and Ipeak currents, and peak transient
voltages, that provide protection for components that cannot
withstand line surges, low value overloads, or short-circuit
currents. Very fast-acting fuses are designed for very fast
response to overloads and short-circuits, and are very
current-limiting.
Effect of Ambient Temperature on Fuses
The current carrying capacity of fuses is 110% of the fuse
rating when installed in a standard UL test circuit and tested
in open air at 25°C ambient. This allows for derating to 100%
of rating in an enclosure at 40°C ambient.
SELECTION CONSIDERATIONS
A
A
B
B
0 0
20
40
60
20
40
60
AMBIENT TEMPERATURE
PERCENT OF UPRATING
PERCENT OF DOWNRATING
KEY TO CHART:
Curve A - Slo-Blo® Fuse
Curve B - Medium and Fast-Acting Fuses
FUSE RERATING CURVE
-60°C
-76°F
-40°C
-40°F
-20°C
-4°F
0°C
32°F
20°C
68°F
40°C
104°F
60°C
140°F
80°C
176°F
100°C
212°F
120°C
248°F
140°C
264°F
Figure 2 – Fuse Rerating Curve
© 2022 Littelfuse, Inc. 263 Littelfuse.com
Technical Application Guide
Technical
11
Current Limitation
A current-limiting fuse is one that opens and clears a fault
in less than 180 electrical degrees, or in other words, within
the first half electrical cycle (0.00833 seconds). See the
definition of Current-limiting Fuse and Figure 13 in the Terms
and Definitions section.
NEC® Article 240.2 states that a current-limiting overcurrent
protective device must reduce the peak let-through current to a
value substantially less than the potential peak current that would
have occurred if the fuse were not used in the circuit or were
replaced with solid conductors of the same impedance. The total
destructive heat energy (I2
t) to the circuit and its components is
greatly minimized as a result of using current-limiting fuses.
It is important to note that UL Class H ‘Renewable’ fuses
designed decades ago are considered non-current limiting. Other
than Midget fuses, almost all other fuse types used in today’s
electrical systems and applications are considered currentlimiting per the above parameters. This selection consideration
now involves determining the degree or level of current limitation
required to properly protect a given device or system.
It is also important to point out that matching fuse holders
and/or fuse blocks must reject non-current-limiting fuses and
accept only current-limiting fuses of the stated UL Class.
Physical Size
While often overlooked, the physical size or overall
dimensions of the fuse to be used in a given application is
another important selection consideration to evaluate. There
is a trend toward reduction of size in almost everything, and
electrical equipment is no exception. Fuse size is actually
determined by the size and dimensions of the fuse block or
disconnect switch in which it is installed.
While saving space may be an important factor when
selecting the proper fuses, other considerations should not
be overlooked. Some of these include:
• Does the smallest fuse have the most desirable
characteristics for the application?
• Does the equipment in which the fuse will be installed
provide adequate space for maintenance?
• Do smaller fuses coordinate well with the system’s other
overcurrent protection?
If looking at just physical dimensions, a 600 volt, 60 ampere,
200,000 AIR, time-delay, dual-element UL Class CD fuse is smaller
than a similarly rated UL Class J fuse, which is in turn, considerably
smaller than a similarly rated UL Class RK1 or Class RK5 fuse.
However, smaller-sized fuses can sometimes have less time-delay
or more nuisance openings than their larger counterparts, so it is
always important to consider all factors involved.
Indication
The newest consideration for selecting the best fuse for a
given application is indication. Many of the more commonly
used UL fuse classes are now available in both indicating
and non-indicating versions. Built-in, blown-fuse indication
that quickly identifies which fuse or fuses within an electrical
panel or system have blown can be found on the Littelfuse
POWR-PRO® LLSRK_ID Class RK1, FLNR_ID, FLSR_ID and
IDSR Class RK5, and JTD_ID Class J fuse series.
The indicating feature on these fuses provides reduced
downtime, increased safety, and reduced housekeeping or
troubleshooting headaches and delays. Littelfuse Indicator®
fuses will help lower the costs associated with downtime,
provide longer fuse life by minimizing nuisance openings,
increase system performance by minimizing equipment
damage, and improve safety by minimizing accidents.
III. GENERAL FUSING RECOMMENDATIONS
Based on the above selection considerations, the following
is recommended:
Fuses with ampere ratings from 1/10 through 600 amperes
• When available fault currents are less than 100,000
amperes and when equipment does not require the more
current-limiting characteristics of UL Class RK1 fuses,
FLNR and FLSR_ID Series Class RK5 current-limiting fuses
provide superior time-delay and cycling characteristics at a
lower cost than RK1 fuses. If available fault currents exceed
100,000 amperes, equipment may need the additional
current-limitation capabilities of the LLNRK, LLSRK and
LLSRK_ID series Class RK1 fuses.
• Fast-acting JLLN and JLLS series Class T fuses possess
space-saving features that make them especially suitable
for protection of molded case circuit breakers, meter
banks, and similar limited-space applications.
• Time-delay JTD_ID and JTD series Class J fuses are used
in OEM motor control center applications as well as other
MRO motor and transformer applications requiring spacesaving IEC Type 2 protection.
• Class CC and Class CD series fuses are used in control
circuits and control panels where space is at a premium.
The Littelfuse POWR-PRO CCMR series fuses are best
used for protection of small motors, while the Littelfuse
KLDR series fuses provide optimal protection for control
power transformers and similar devices.
For questions about product applications, call our Technical
Support Group at 800-TEC-FUSE.
SELECTION CONSIDERATIONS
Littelfuse.com 264 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
Fuses with ampere ratings from 601 through 6,000 amperes
For superior protection of most general-purpose and motor
circuits, it is recommended to use the POWR-PRO® KLPC
series Class L fuses. The Class L fuses are the only timedelay fuse series available in these higher ampere ratings.
Information on all the Littelfuse fuse series referenced above
can be found on the UL/CSA Fuse Classes and Applications
Charts found later in this Technical Application Guide.
IV. SELECTION CONSIDERATIONS FOR
FUSE HOLDERS
Equally important to the selection of the proper fuse is the
correct selection of the proper fuse holder or fuse block for
a given application. Fuse holders are available using most
of the same Selection Considerations outlined above for UL
fuse classes. Considerations for fuse holders include:
• Current Rating
• Voltage Rating
• Interrupting Rating
• Physical Size
• Indication
Additional selection considerations for fuse holders and fuse
blocks include:
• Number of poles
• Mounting configuration
• Connector type
Number of Poles
The number of poles for each set of fuses is determined by
the characteristics of the circuit. Most fuse block series are
available in 1, 2, or 3 pole configurations, although some are
also available with four or more poles. The option to gang
individual fuse blocks into longer strips will be determined
by the available space and type of wire being used.
Mounting Configuration
Depending on the fuse block design, another selection
consideration to evaluate is how the fuse block is mounted
or inserted into the panel. Historically, fuse blocks simply
screwed into the back of the panel, but many newer designs
have now added (or replaced the screw-in design with) a DIN
rail mounting capability. The DIN rail mounting feature allows
the blocks to be quickly installed and removed from the rails.
Connector Type
For Littelfuse fuse blocks, a choice of three connector types
or wire terminations is available:
• Screw – for use with spade lugs or ring terminals.
• Screw with Pressure Plate – for use with solid or
stranded wire without terminal and recommended for
applications where vibration will be a factor.
• Box Lug – the most durable of the three options and
used with all types of solid wire and Class B and Class C
stranded wire.
There are a few additional aspects to keep in mind when
selecting the fuse holder or fuse block needed for a given
application. UL Class H blocks accept Class H, Class K5, and
Class R fuses. Similarly, Midget-style fuse blocks accept
both Midget and UL Class CC fuses.
Both UL Class R and Class CC fuse holders contain a
rejection feature which prevents the insertion of a different
Class or type of fuse. The physical size and dimensions of
UL Class J and Class T fuses accomplish the same thing in
preventing the insertion of a different Class of fuse as well.
V. CIRCUIT PROTECTION CHECKLIST
To select the proper overcurrent protective device for an
electrical system, circuit and system designers should ask
themselves the following questions before a system is
designed:
• What is the normal or average current expected?
• What is the maximum continuous (three hours or more)
current expected?
• What inrush or temporary surge currents can be
expected?
• Are the overcurrent protective devices able to distinguish
between expected inrush and surge currents, and open
under sustained overloads and fault conditions?
• What kind of environmental extremes are possible? Dust,
humidity, temperature extremes and other factors need
to be considered.
• What is the maximum available fault current the
protective device may have to interrupt?
• Is the overcurrent protective device rated for the system
voltage?
• Will the overcurrent protective device provide the safest
and most reliable protection for the specific equipment?
• Under short-circuit conditions, will the overcurrent
protective device minimize the possibility of a fire or
explosion?
• Does the overcurrent protective device meet all the
applicable safety standards and installation requirements?
Answers to these questions and other criteria will help to
determine the type overcurrent protection device to use for
optimum safety, reliability and performance.
SELECTION CONSIDERATIONS
© 2022 Littelfuse, Inc. 265 Littelfuse.com
Technical Application Guide
Technical
11
The performance capabilities of various fuses are graphically
represented by two different types of fuse characteristic
curves: time-current curves and peak let-through charts.
These curves and charts define the operating characteristics
of a given fuse, and assist system designers and engineers
in selecting the proper fuse to protect equipment and
electrical systems.
Understanding Time-current Curves
Time-current curves provide a graphical representation
or plot of a fuse’s average melting (opening) time at any
current. Time-current curves for Littelfuse POWR-GARD®
fuses can be found online at
littelfuse.com/technicalcenter.
In order to make the curves more readable, the performance
information is presented on log-log paper. The overcurrent
values appear across the bottom and increase in magnitude
from left to right. Average melting times appear on the
left-hand side of the curve and increase in magnitude from
bottom to top. The ampere ratings of the individual fuses
for a given series are listed at the top and increase in rating
from left to right. Figure 4 shows the average melting time
curves for a typical time-delay fuse series.
As discussed earlier in the Fuseology Fundamentals
section, time-delay, fast-acting, and very fast-acting fuses
all respond differently based on the overcurrents occurring
in the systems each is protecting. To illustrate the basic
differences between each type of fuse, Figure 5 compares
the average melting times for 100 and 600 amp ratings
of three fuse types: Littelfuse dual-element, time-delay
LLSRK series class RK1 fuses (green); Littelfuse normal
opening NLS series class K5 fuses (red); and Littelfuse very
fast acting L60S series semiconductor fuses (blue).
To better illustrate this point, Table 3 also compares the
opening times for each of these fuses.
Peak Let-through Charts
Peak let-through charts illustrate the maximum instantaneous
current through the fuse during the total clearing time. This
represents the current limiting ability of a fuse.
Fuses that are current-limiting open severe short-circuits
within the first half-cycle (180 electrical degrees or 0.00833
seconds) after the fault occurs. Current-limiting fuses also
reduce the peak current of the available fault current to a
value less than would occur without the fuse. This reduction
is shown in Figure 6.
A fuse’s current-limiting effects are shown graphically on
Peak Let-through charts such as the one shown in Figure 7.
The values across the chart’s bottom represent the available
FUSE CHARACTERISTIC CURVES AND CHARTS
1000
800
600
400
300
200
100
80
60
40
30
20
10
8
6
4
3
2
1
.8
.6
.4
.3
.2
.1
.08
.06
.04
.03
.02
.01
200
300
400
600
800
1000
2000
3000
4000
6000
8000
10000
20000
30000
40000
60000
80000
100000
10
20
30
40
60
80
100
15 A
30 A
60 A
100 A
200 A
400 A
600 A
TIME IN SECONDS
CURRENT IN AMPERES
1000
800
600
400
300
200
100
80
60
40
30
20
10
8
6
4
3
2
1
.8
.6
.4
.3
.2
.1
.08
.06
.04
.03
.02
.01
200
300
400
600
800
1000
2000
3000
4000
6000
8000
10000
20000
30000
40000
60000
80000
100000
10
20
30
40
60
80
100 100 AMP
600 AMP
GREEN = TIME-DELAY FUSE
RED = NORMAL OPENING FUSE
BLUE = VERY-FAST ACTING FUSE
TIME IN SECONDS
CURRENT IN AMPERES
AMPERE
RATING FUSE TYPE OPENING TIME IN SECONDS
500% RATING 800% RATING 1200% RATING
100
TIME-DELAY 12 secs. 0.9 secs. 0.14 secs.
NORMAL OPENING 2 secs. 0.7 secs. 0.3 secs.
VERY FAST-ACTING 1.3 secs. 0.02 secs. >0.01 secs.
600
TIME-DELAY 14 secs. 0.7 secs. 0.045 secs.
NORMAL OPENING 10 secs. 3 secs. 1.1 secs.
VERY FAST-ACTING 2 secs. 0.05 secs. >0.01 secs.
Figure 4 – Average Melting Time Curves for Typical Time-Delay
Fuse Series
Figure 5 – Comparison of Average Melting Times for
Three Fuse Types
Table 3 – Comparative Opening Times for Time-Delay, FastActing, and Very Fast-Acting Fuses
Littelfuse.com 266 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
(also referred to as potential or prospective) rms symmetrical
fault current. The values on the chart’s left side represent
the instantaneous available peak current and the peak letthrough current for various fuse ratings.
To better explain the function of these charts, let’s run
through an example. Start by entering the chart on the
bottom at 100,000 rms symmetrical amperes and read
upwards to the A-B line. From this point, read horizontally
to the left and read the instantaneous peak let-thru current
of 230,000 amperes. In a circuit with a typical 15% shortcircuit power factor, the instantaneous peak of the available
current is approximately 2.3 times the rms symmetrical
value. This occurs since the A-B line on the chart has a
2.3:1 slope.
The diagonal curves that branch off the A-B line illustrate the
current-limiting effects of different fuse ampere ratings for
a given fuse series. To continue the example from above,
enter the chart in Figure 7 on the bottom at 100,000 rms
symmetrical amperes and read upwards to the intersection
of the 200 ampere fuse curve. Now read from this point
horizontally to the left and read a peak let-through current of
approximately 20,000 amperes.
What this tells us is that the 200 ampere fuse has reduced
the peak current during the fault from 230,000 amperes to
20,000 amperes. In other words, this is the current-limiting
effect of the 200 ampere fuse. 20,000 amperes is less than
one-tenth of the available current. This is important because
the magnetic force created by current flow is a function of
the peak current squared. If the peak let-through current of
a current-limiting fuse is one-tenth of the available peak, the
magnetic force is reduced to less than 1/100 of what would
occur without the fuse.
Using the Peak Let-through Charts
(“Up-Over-and-Down”)
Peak Let-through Charts for Littelfuse POWR-GARD® fuses
can be found online at littelfuse.com/technicalcenter.
These charts are useful in determining whether a given fuse
can properly protect a specific piece of equipment.
For example, given an available fault-current of 100,000
rms symmetrical amperes, determine whether 600 amp
250 volt time-delay Class RK1 fuses can sufficiently protect
equipment that has a 22,000 amp short-circuit rating. Refer
to Figure 8.
Start by locating the 100,000 A available fault-current on the
bottom of the chart (Point A) and follow this value upwards
to the intersection with the 600 amp fuse curve (Point B).
Next, follow this point horizontally to the left to intersect
with the A-B line (Point C). Finally, read down to the bottom
of the chart (Point D) to read a value of approximately 18,000
amps.
Can the fuse selected properly protect the equipment for
this application? Yes, the POWR-PRO® LLNRK 600 ampere
RK1 current-limiting fuses have reduced the 100,000
amperes available current to an apparent or equivalent
18,000 amps. When protected by 600 amp LLNRK RK1
fuses, equipment with short-circuit ratings of 22,000 amps
may be safely connected to a system having 100,000
available rms symmetrical amperes.
This method, sometimes referred to as the “Up-Over-andDown” method, may be used to:
1. Provide back-up short-circuit protection to large air
power circuit breakers.
2. Enable non-interrupting equipment such as bus duct to be
FUSE CHARACTERISTIC CURVES AND CHARTS Current
Time
Peak current which would
occur without current limitation
Peak Let-Thru Current
Figure 14
100
1000000
200000
300000
400000
600000
800000
100000
20000
30000
40000
60000
80000
10000
2000
3000
4000
6000
8000
1000
200
300
400
600
800
100
200
300
400
600
800
1000
2000
3000
4000
6000
8000
10000
20000
30000
40000
60000
80000
100000
200000
FUSE
AMPERE
RATING
600
400
200
100
60
30
A
B
AVAILABLE FAULT CURRENT
SYMMETRICAL R.M.S. AMPERES
PEAK LET-THRU IN AMPERES
Figure 7 – Peak Let-through Charts
Figure 6 – Current limiting effect of fuses
© 2022 Littelfuse, Inc. 267 Littelfuse.com
Technical Application Guide
Technical
11
SELECTIVE COORDINATION
installed in systems with available short-circuit currents
greater than their short circuit (withstand) ratings.
However, this method may not be used to select fuses for
backup protection of molded case or intermediate frame
circuit breakers. National Electrical Code® (NEC®) Article
240.86 requires Series Ratings. Refer to the NEC® for more
information.
UL Listed fuse-to-circuit breaker series ratings are now
available from most national load center and panelboard
manufacturers. Listings are shown in their product digests,
catalogs, and online. Many local builders have also obtained
fuse-to-circuit breaker series ratings. For additional
information contact the Littelfuse Technical Support Group at
1-800-TEC-FUSE (1-800-832-3873).
Short-Circuit Current Rating (SCCR)
Since 2005, the NEC® has required Industrial Control Panels
to be labeled with their SCCR. These labels allow users
and inspectors to compare the SCCR of the equipment
to the available fault current in order to avoid potential
hazards in facilities.
Selective Coordination
A “coordinated” or “selective” system is a system whose
overcurrent protective devices have been carefully chosen and
their time-current characteristics coordinated.
Only the overcurrent device immediately on the line side of an
overcurrent will open for any overload or short-circuit condition.
To further clarify, refer to the Terms and Definitions section
for the definition of Selective Coordination and Figure 15 for a
graphical example.
Since the advent of electrical and electronic equipment,
businesses have become entirely dependent on the
continuous availability of electric energy. Loss of power
halts all production and order processing, yet expenses
continue to increase. Even many UPS systems become
unintentionally non-selective causing power loss to
computers and other critical equipment. Non-selectivity may
defeat otherwise well-engineered UPS systems.
In a selective system, none of this occurs. Overloads and
faults are disconnected by the overcurrent protective device
immediately on the line side of the problem. The amount of
equipment removed from service is minimized, the faulted
or overloaded circuit is easier to locate, and a minimum
amount of time is required to restore full service.
For these and many other reasons, selectivity is the
standard by which many systems are judged and designed.
Fuse Selectivity
To get a better sense of how to ensure that fuses are
selectively coordinated within an electrical system, refer
to Figure 4 shown earlier in this Technical Application
Guide. This figure shows typical average melting timecurrent curves for one class of fuses. Note that the curves
are roughly parallel to each other and that for a given
overcurrent, the smaller fuse ratings respond quicker than
the larger ratings. The heat energy required to open a fuse
is separated into melting I2
t and arcing I2
t (see definition of
Ampere-Squared-Seconds). The sum of these is the total
clearing I2
t.
For a system to be considered coordinated, the smaller
fuse total clearing I2
t must be less than the larger fuse
melting I2
t. In other words, if the downstream (branch)
fuse opens the circuit before the overcurrent affects
the upstream (feeder) fuse element, the system will be
considered selective. This can be determined by analyzing
curves displaying melting and total clearing I2
t, or from
minimum melting and maximum clearing time-current
curves.
But the simplest method of coordinating low voltage power
fuses is by using a Fuse Coordination Table such as the
one shown in Table 4. This table is only applicable for the
Littelfuse POWR-PRO® and POWR-GARD® fuse series listed.
Tables such as this greatly reduce design time. For example,
the coordination table shows that POWR-PRO KLPC Class
L fuses coordinate at a two-to-one ratio with other Class L
fuses, with POWR-PRO LLNRK / LLSRK / LLSRK_ID series
100
1000000
200000
300000
400000
600000
800000
100000
20000
30000
40000
60000
80000
10000
2000
3000
4000
6000
8000
1000
200
300
400
600
800
100
200
300
400
600
800
1000
2000
3000
4000
6000
8000
10000
20000
30000
40000
60000
80000
100000
200000 FUSE
AMPERE
RATING
600
400
200
100
60
30
A
B
D A
C B
AVAILABLE FAULT CURRENT
SYMMETRICAL R.M.S. AMPERES
PEAK LET-THRU IN AMPERES
Figure 8 – Peak Let-through Chart for POWR-PRO® LLNRK Class
RK1 Dual-Element Fuses Using the Up-Over-and-Down Method
Littelfuse.com 268 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
Class RK1 fuses, and POWR-PRO JTD / JTD_ID series Class
J fuses.
In the system shown in Figure 9, the 3000 amp Class L
main fuses are at least twice the ratings of the 1500, 1200,
and 1000 amp Class L feeder fuses. Using the 2:1 ratio
just referenced above, it is determined that these fuses
will coordinate. The Coordination Table also shows that the
LLSRK_ID series time-delay RK1 feeder and branch circuit
fuses coordinate at a two-to-one ratio with the Class L
feeder fuses, so the entire system in Figure 9 would be
considered 100% coordinated.
Circuit Breaker Coordination
As a result of the numerous types of circuit breakers
and circuit breaker trip units available in today’s market,
developing a coordinated circuit breaker system or
coordinating circuit breakers with fuses is beyond the scope
of this Technical Application Guide. For further questions,
contact the Littelfuse Technical Support Group.
NEC® Requirements for Selective
Coordination
Component Short-Circuit Protecting Ability
As shown in Figure 10, the NEC® requires equipment
protection to be coordinated with overcurrent protective
devices and the available fault current in order to prevent
extensive damage to the equipment. Essentially, this
means that electrical equipment must be capable of
withstanding heavy overcurrents without damage or be
properly protected by overcurrent protective devices that
will limit damage.
When a severe fault occurs in an unprotected circuit, current
immediately increases to a very high value. This is the
available or prospective fault current. Some fuses respond
so quickly to the increasing current that they interrupt
current within the first half-cycle - or before the current even
reaches its first peak. This is illustrated in Figure 6 found
earlier in the Technical Application Guide. Such fuses are
termed “current-limiting fuses.”
Current-limiting fuses stop damaging current faster than
any other protective device, and greatly reduce or totally
prevent component damage from high fault currents. This
performance capability helps users meet the NEC® Article
110.10 requirements listed in Figure 10.
Pre-Engineered Solutions
Applicable code requirements also continue to expand with
each new edition of the National Electrical Code®. As of the
2014 edition of the NEC®, the following requirements need
to be met – and can be, utilizing Littelfuse POWR-GARD®
Pre-Engineered Solutions:
• NEC 517.26 – Healthcare Essential Electrical Systems
• NEC 620.82 – Elevators
• NEC 700.32 – Emergency Systems
• NEC 701.27 – Legally Required Standby Systems
• NEC 708.54 – Critical Operations Power Systems
SELECTIVE COORDINATION
LINE-SIDE FUSES LOAD-SIDE FUSES
AMPERE
RANGE UL CLASS
LITTELFUSE
CATALOG
NUMBER
TIME-DELAY FUSES
AMPERE RANGE, UL CLASS AND CATALOG NO.
FAST-ACTING FUSES
AMPERE RANGE, UL CLASS AND CATALOG NO.
601-6000 601-4000 30-600 30-600 30-600 0-30 30-600 30-1200 30-600 1-60
L L RK1 J RK5 CC RK1 T J G
KLPC
LDC KLLU LLNRK
LLSRK_ID
JTD_ID
JTD
FLNR_ID
FLSR_ID
IDSR
CCMR KLNR
KLSR
JLLN
JLLS JLS SLC
601-6000 L KLPC 2:1 2:1 2:1 2:1 4:1 2:1 2:1 2:1 2:1 N/A
601-4000 L KLLU 2:1 2:1 2:1 2:1 4:1 2:1 2:1 2:1 2:1 N/A
601-2000 L LDC 2:1 2:1 2:1 2:1 4:1 2:1 2:1 2:1 2:1 N/A
30-600 RK1 LLNRK N/A N/A 2:1 2:1 8:1 2:1 3:1 3:1 3:1 4:1
30-600 RK1 LLSRK_ID N/A N/A 2:1 2:1 8:1 2:1 3:1 3:1 3:1 4:1
30-600 J JTD_ID N/A N/A 2:1 2:1 8:1 2:1 3:1 3:1 3:1 4:1
30-600 RK5 IDSR N/A N/A 1.5:1 1.5:1 2:1 2:1 1.5:1 1.5:1 1.5:1 1.5:1
30-600 RK5 FLNR_ID N/A N/A 1.5:1 1.5:1 2:1 2:1 1.5:1 1.5:1 1.5:1 1.5:1
30-600 RK5 FLSR_ID N/A N/A 1.5:1 1.5:1 2:1 2:1 1.5:1 1.5:1 1.5:1 1.5:1
30-600 RK1 KLNR N/A N/A 3:1 3:1 8:1 N/A 3:1 3:1 3:1 4:1
30-600 RK1 KLSR N/A N/A 3:1 3:1 8:1 N/A 3:1 3:1 3:1 4:1
30-1200 T JLLN N/A N/A 3:1 3:1 8:1 N/A 3:1 3:1 3:1 4:1
30-1200 T JLLS N/A N/A 3:1 3:1 8:1 N/A 3:1 3:1 3:1 4:1
30-600 J JLS N/A N/A 3:1 3:1 8:1 N/A 3:1 3:1 3:1 4:1
1-60 G SLC N/A N/A 3:1 3:1 4:1 N/A 2:1 2:1 2:1 2:1
Table 4 – Fuse Coordination Table. Selecting the Correct Fuse Ampere Ratio to Maintain Selectively Coordinated Systems.
(Ratios are expressed as Line-Side Fuse to Load-Side Fuse.)
© 2022 Littelfuse, Inc. 269 Littelfuse.com
Technical Application Guide
Technical
11
The Littelfuse product line of Pre-Engineered Solutions
includes:
• LPS Series POWR-Switch (single elevator shunt-trip
disconnect switch)
• LCP Selective Coordination Panel
These products continue to gain in popularity because they
meet NEC® requirements and offer simple, economical
solutions for a variety of applications.
Visit littelfuse.com/lcp for more information on Littelfuse
Pre-Engineered Solution products and corresponding
selective coordination requirements.
SELECTIVE COORDINATION
KLPC
3000
KLPC
1500
KLPC
1200
KLPC
1000
LLSRK
200
LLSRK
200
LLSRK
400
LLSRK
400
Figure 9 – Example of Selectively Coordinated Fused System
NATIONAL ELECTRICAL CODE®
ARTICLE 110 – Requirements for Electrical Installations
I. General
110.3. Examination, Identification, Installation, and Use of Equipment.
(A) Examination. In judging equipment, considerations such as the following shall be evaluated:
(5) Heating effects under normal conditions of use and also under abnormal conditions likely to arise in service.
(6) Arcing effects.
(B) Installation and Use. Listed or labeled equipment shall be used or installed in accordance with any instructions included in the listing
or labeling.
110.9 Interrupting Rating. Equipment intended to interrupt current at fault levels shall have an interrupting rating at nominal circuit
voltage sufficient for the current that is available at the line terminals of the equipment.
Equipment intended to interrupt current at other than fault levels shall have an interrupting rating at nominal circuit voltage sufficient for
the current that must be interrupted.
110.10 Circuit Impedance, Short-Circuit Current Ratings, and Other Characteristics. The overcurrent protective devices, the
total impedance, the equipment short-circuit current ratings, and other characteristics of the circuit to be protected shall be selected and
coordinated to permit the circuit protective devices used to clear a fault to do so without extensive damage to the electrical equipment of
the circuit. This fault shall be assumed to be either between two or more of the circuit conductors or between any circuit conductor and
the equipment grounding conductor(s) permitted in 250.118. Listed equipment applied in accordance with their listing shall be considered
to meet the requirements of this section.
ARTICLE 240 – Overcurrent Protection
240.1 Scope. Parts I through VII of this article provide the general requirements for overcurrent protection and overcurrent protective
devices not more than 1000 volts, nominal. Part VIII covers overcurrent protection for those portions of supervised industrial installations
operating at voltages of not more than 1000 volts, nominal. Part IX covers overcurrent protection over 1000 volts, nominal.
Informational Note: Overcurrent protection for conductors and equipment is provided to open the circuit if the current reaches a value
that will cause an excessive or dangerous temperature in conductors or conductor insulation. See also Articles 110.9 for requirements for
interrupting ratings and 110.10 for requirements for protection against fault currents.
(Reproduced by permission of NFPA per 2014 Edition of NEC)
Figure 10 – National Electrical Code Requires Effective Overcurrent Protection
Littelfuse.com 270 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
UL/CSA FUSE CLASSES AND APPLICATIONS
CLASS L
STANDARDS: UL Standard 248-10,
CSA Standard C22.2, No. 106, classified as HRCI-L
VOLTAGE RATING: 600 volts, AC and/or DC
CURRENT RATINGS: 601-6000 amps
KLPC also available 200-600A; LDC also available 150-600A
INTERRUPTING RATING: AC: 200,000 amps rms symmetrical
DC: 50,000, 100,000, or 200,000 amps
Not interchangeable with any other UL fuse class.
Time delay: Class L fuses may be marked “Time-Delay” although UL does not
investigate time-delay characteristics of Class L fuses.
KLPC & KLLU: 10 seconds at 500% current rating
LDC: 4 seconds at 500% current rating
LF SERIES: KLPC, KLLU, LDC
PAGE: 8
CLASS R
STANDARDS: UL Standard 248-12,
CSA Standard C22.2, No. 106, classified as HRCI-R
VOLTAGE RATINGS: 250 and 600 volts, AC; 125 and 300 volts DC
CURRENT RATINGS: 0-600 amps
INTERRUPTING RATING: 200,000 amps rms symmetrical
TWO CLASSES: RK1 and RK5
Time delay is optional for Class R fuses.
Time Delay fuses are required to hold 500% current rating for a minimum of ten seconds.
Same dimensions as UL Class H fuses, terminals modified to provide rejection feature.
Fits UL Class R fuse holders which reject non Class R fuses.
Physically interchangeable with UL Class H, NEMA Class H, and UL Classes K1 &
K5 when equipment has Class H fuse holders.
CLASS K
STANDARDS: UL Standard 248-9; No CSA Standard
VOLTAGE RATINGS: 250 and 600 volts, AC
CURRENT RATING: 0-600 amps
INTERRUPTING RATINGS: Three permitted: 50,000, 100,000, and 200,000 amps
rms symmetrical
Time delay is optional for Class K fuses.
Time Delay fuses are required to hold 500% current rating for a minimum of ten seconds.
Same Dimensions and Physically interchangeable with UL Class H fuse holders.
Class K fuses are not permitted to be labeled Current Limiting because there is no rejection feature as required by NEC® Article 240-60(B).
CLASS J
STANDARDS: UL Standard 248-8,
CSA Standard C22.2, No. 106, classified as HRCI-J
VOLTAGE RATING: 600 volts, AC
CURRENT RATINGS: 0-600 amps
INTERRUPTING RATING: 200,000 amps rms symmetrical
Not interchangeable with any other UL fuse class.
Time delay optional: Minimum of 10 seconds at 500% current rating.
LF SERIES: Time Delay: JTD_ID, JTD
Fast Acting: JLS
PAGE: 21
CLASS G
STANDARDS: UL Standard 248-5
CSA Standard C22.2, No. 106, classified as HRCI Misc.
VOLTAGE RATING: 480 volts, AC
CURRENT RATINGS: 0-60 amps
INTERRUPTING RATING: 100,000 amps rms symmetrical
Not interchangeable with any other UL fuse class.
Time delay optional: Minimum of 12 seconds at 200% current rating.
LF SERIES: SLC
PAGE: 26
CLASS RK1
High degree of current limitation.
Provides IEC Type 2 (no damage)
protection for motor starters and
control components. Time Delay
optional, LLSRK_ID Series provides
visual indication of blown fuse.
LF SERIES: Time Delay: LLNRK,
LLSRK, LLSRK_ID
Fast Acting: KLNR, KLSR
PAGE: 13
CLASS RK5
Moderate degree of current limitation, adequate for most applications. Time delay optional.
FLNR_ID, FLSR_ID and IDSR series
provides visual indication of blown
fuse.
LF SERIES: FLNR, FLNR_ID,
FLSR, FLSR_ID, and IDSR
PAGE: 16
CLASS K5
Same prescribed degree of current
limitation as RK5 fuses when
tested at 50,000 or 100,000 amps
rms symmetrical.
LF SERIES: NLN, NLS
PAGE: 20
CLASS T
STANDARDS: UL Standard 248-15
CSA Standard C22.2, No. 106, classified as HRCI-T
VOLTAGE RATINGS: 300 and 600 volts AC, 125 and 300 volts DC
CURRENT RATINGS: 0-1200 amps
900 to 1200 amps UL Recognized for 600V version
INTERRUPTING RATING: 200,000 amps rms symmetrical
Fast-Acting fuses. High degree of current limitation.
Very small fuses; space-saving and non-interchangeable with any other UL fuse class.
LF SERIES: JLLN, JLLS
PAGE: 24
CLASS CC/CD
STANDARDS: UL Standard 248-4,
CSA Standard C22.2, No. 106, classified as HRCI Misc.
VOLTAGE RATING: 600 volts, AC
CURRENT RATINGS: UL Class CC: 0-30 amps
UL Class CD: 35-60 amps
INTERRUPTING RATINGS: 200,000 amps rms symmetrical
Time delay optional: Minimum of 12 seconds at 200% current rating.
LF SERIES: Time Delay: CCMR (motors), KLDR (transformers)
Fast Acting: KLKR
PAGE: 27
CLASS K1
Same prescribed degree of current
limitation as RK1 fuses when
tested at 50,000 or 100,000 amps
rms symmetrical.
LF SERIES: Time Delay: LLNRK,
LLSRK
Fast Acting: KLNR,
KLSR
PAGE: 13
Overcurrent and short-circuit protection of power and lighting feeders and branch circuits
Current Limiting
Fuses which meet the requirements for current limiting fuses are required to be labeled “Current Limiting”. Fuse labels must
include: UL/CSA fuse class, manufacturer’s name or trademark, current rating, AC and/or DC voltage rating, and AC and/or DC
interrupting rating. “Time Delay”, “D”, “TD” or equivalent may also be included on the label when the fuse complies with the
time delay requirements of its class.
© 2022 Littelfuse, Inc. 271 Littelfuse.com
Technical Application Guide
Technical
11
UL/CSA FUSE CLASSES AND APPLICATIONS
FUSES FOR SUPPLEMENTARY OVERCURRENT PROTECTION
STANDARDS: UL Standard 248-14; CSA Standard C22.2,
No. 59-1. Three Classifications covered:
NOTE: Fuses may be rated for AC and/or DC when suitable for
such use.
(1) MICRO FUSES
Voltage ratings: UL, 125 volts; CSA, 0-250 volts
Current ratings: UL, 0-10 amps; CSA, 0-60 amps
Interrupting rating: 50 amps rms symmetrical
(2) MINIATURE FUSES (CSA classifies these as Supplemental Fuses)
Voltage ratings: UL, 125 or 250 volts; CSA, 0-600 volts
Current ratings: UL, 0-30 amps; CSA, 0-60 amps
Interrupting rating: 10,000 amps rms symmetrical
(3) MISCELLANEOUS CARTRIDGE FUSES (CSA classifies these as
Supplemental Fuses)
Voltage ratings: UL, 125-1000 volts; CSA, 0-100 volts
Current ratings: UL, 0-30 amps; CSA 0-60 amps
Interrupting ratings: 10,000, 50,000, or 100,000 amps rms symmetrical
Time delay (Optional); Minimum delay at 200% fuse rating:
5 seconds for fuses rated 3 amps or less
12 seconds for fuses rated more than 3 amps
LF SERIES: BLF, BLN, BLS, FLA, FLM, FLQ, FLU, KLK, KLQ KLKD, SPF
NOTE: Littelfuse electronic fuses are also covered by these standards; see
electronic section of this catalog, or littelfuse.com for complete listing.
PAGE: 30
SPECIAL PURPOSE FUSES
There are no UL Standards covering this category of fuses. These fuses have
special characteristics designed to protect special types of electrical or electronic
equipment such as diodes, SCR, transistors, thyristors, capacitors, integrally fused
circuit breakers, parallel cable runs, etc.
Fuses may be UL Recognized for use as a component in UL Listed equipment.
UL Recognized fuses are tested for characteristics such as published interrupting
capacity. They are also covered by UL re-examination service.
Non-renewable
VOLTAGE RATINGS: up to 1000 volts AC and/or DC
AMPERE RATINGS: up to 6000 amperes
INTERRUPTING RATINGS: up to 200,000 amperes
Many of these fuses are extremely current limiting. When considering application of
these fuses, or if you have special requirements, contact Littelfuse Technical Support
Group for assistance.
LF SERIES: KLC, L15S, L25S, L50QS, L50S, L60S, L70QS, L70S, JLLS 900 amp
through 1200 amp
PAGES: 70
CLASS H
STANDARDS: UL Standard 248-6
CSA Standard C22.2, No. 59.1
Also known as NEMA Class H, and sometimes
referred to as “NEC” or “Code” fuses
VOLTAGE RATINGS: 250 and 600 volts, AC
AMPERE RATINGS: 0-600 amps
INTERRUPTING RATINGS: 10,000 amps rms symmetrical
Two types: one-time and renewable
Physically interchangeable with UL Classes K1 & K5;
Fits UL Class H fuse holders which will also accept K1, K5, RK5, and RK1 fuses.
Manufacturers are upgrading Class H One-time fuses to Class K5 per UL Standard
248-9D, See Class K fuses.
ONE-TIME FUSES
(NON-RENEWABLE)
Time delay: Optional
Time-delay fuses must hold 500%
current rating for a minimum of ten
seconds.
LF SERIES: NLKP
PAGE: 20
RENEWABLE FUSES
Only Class H fuses may be renewable. While time delay is optional,
no renewable fuses meet requirements for time delay.
Some renewable fuses have a moderate amount of time delay, referred
to as “time lag” to differentiate
from true time delay.
LF SERIES: Discontinued - Please
cross to RK5 or RK1 class fuses
PLUG FUSES
STANDARDS: UL Standard 248-11,
CSA Standard C22.2, No. 59.1
VOLTAGE RATINGS: 125 volts AC only
AMPERE RATINGS: 0-30 amps
INTERRUPTING RATINGS: 10,000 amps rms symmetrical. Interrupting
rating need not be marked on fuse.
Two types: Edison-base and Type S
EDISON-BASE: Base is same as standard light bulb. All amp ratings interchange
able. NEC® permits Edison-base plug fuses to be used only as replacements for
existing fuses, and only when there is no evidence of tampering or overfusing.
TYPE S: Not interchangeable with Edison-base fuses unless non-removable Type
S fuse adapter is installed in Edison-base fuse socket. To prevent overfusing,
adapters have three ampere ratings: 10-15, 16-20, and 21-30 amps.
Time delay: Fuses may be time delay, if so, they are required to hold 200% of rating
for 12 seconds minimum.
NOTE: Plug fuses may be used where there is not more than 125 volts between
conductors or more than 150 volts from any conductor to ground. This permits their
use in 120/240 volts grounded, single-phase circuits.
LF SERIES: Edison-base: TOO, TLO
Type S: SOO, SLO
Type S Adapters: SAO
PAGE: 65
Non-Current Limiting
Overcurrent and short-circuit protection of power and lighting feeders and branch circuits
Additional Resources and POWR-GARD® Products
Littelfuse is continually developing new technical resources
and products that meeting evolving industry standards.
For the latest information, visit:
littelfuse.com
Littelfuse.com 272 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
Adjustable Alarm Level – A setting on a protection relay at
which an LED or an output contact operates to activate a visual
or audible alarm.
Adjustable Time Delay – A setting on a protection relay that
determines the time between the fault detection and relay
operation.
AIC or A.I.C. – See Interrupting Capacity.
AIR or A.I.R. – See Interrupting Rating.
Alarm Relay Contact – The output of the relay that acts as a
switch and is connected to a visual or audible alarm.
Ambient Temperature – The air temperature surrounding a
device. For fuses or circuit breakers in an enclosure, the air
temperature within the enclosure.
Ampacity – The current in amperes that a conductor can carry
continuously under the conditions of use without exceeding
its temperature rating. It is sometimes informally applied to
switches or other devices which are more properly referred to
by their ampere rating.
Ampere Rating – The current rating, in amperes, that is marked
on fuses, circuit breakers, or other equipment.
Ampere-Squared-Seconds (I2
t) – A means of describing the
thermal energy generated by current flow. When a fuse is
interrupting a current within its current-limiting range, the term
is usually expressed as melting, arcing, or total clearing I2
t.
• Melting I2
t is the heat energy passed by a fuse after an
overcurrent occurs and until the fuse link melts. It equals
the rms current squared multiplied by the melting time in
seconds. For times less than 0.004 seconds, melting I2
t
approaches a constant value for a given fuse.
• Arcing I2
t is the heat energy passed by a fuse during its
arcing time. It is equal to the rms arcing current squared (see
definition below), multiplied by arcing time.
• Clearing I2
t (also Total Clearing I2
t) is the ampere-squared
seconds (I2
t) through an overcurrent device from the
inception of the overcurrent until the current is completely
interrupted. Clearing I2
t is the sum of the Melting I2
t plus the
Arcing I2
t.
Analog Output – A 0–1 mA, 4–20 mA or 0–5 Vdc signal from
a protection relay used to pass information to a device or
controller.
Arc-Blast – A pressure wave created by the heating, melting,
vaporization, and expansion of conducting material and
surrounding gases or air.
Arc-Flash – The sudden release of heat energy and intense
light at the point of an arc. Can be considered a short-circuit
through the air, usually created by accidental contact between
live conductors.
Arc Gap – The distance between energized conductors or
between energized conductors and ground. Shorter arc gaps
result in less energy being expended in the arc, while longer
gaps reduce arc current. For 600 volts and below, arc gaps of
1.25 inches (32 mm) typically produce the maximum incident
energy.
Arc Rating – A rating assigned to material(s) that relates to the
maximum incident energy the material can resist before break
open of the material or onset of a second-degree burn. The arc
rating is typically shown in cal/cm².
Arcing Current (See Figure 11) – The current that flows through
the fuse after the fuse link has melted and until the circuit is
interrupted.
Figure 11 – Arcing and melting currents plus arcing, melting and clearing
times
Arcing I2
t – See Ampere-Squared-Seconds (I2
t).
Arcing Fault – A short-circuit that arcs at the point of fault. The
arc impedance (resistance) tends to reduce the short-circuit
current. Arcing faults may turn into bolted faults by welding of
the faulted components. Arcing faults may be phase-to-phase
or phase-to-ground.
Arcing Time (See Figure 11) – The time between the melting
of a fuse link or parting of circuit breaker contacts, until the
overcurrent is interrupted.
Arc Voltage (See Figure 12) – Arc voltage is a transient voltage
that occurs across an overcurrent protection device during
the arcing time. It is usually expressed as peak instantaneous
voltage (Vpeak or Epeak), or on rare occasion as rms voltage.
Asymmetrical Current – See Symmetrical Current.
Available Short-Circuit Current (also Available or
Prospective Fault Current) – The maximum rms Symmetrical
Current that would flow at a given point in a system under
bolted-fault conditions. Short-circuit current is maximum during
the first half-cycle after the fault occurs. See definitions of
Bolted Fault and Symmetrical Current.
TERMS AND DEFINITIONS
Current
Time
Peak Let-Thru Current
Peak current which would
occur without current limitation
Arcing Energy (I2
t)
Melting Energy (I2
t)
Melting
Time Arcing
Time
Arcing
Current
Melting
Current
© 2022 Littelfuse, Inc. 273 Littelfuse.com
Technical Application Guide
Technical
11
Blade Fuse – See Knife Blade Fuse.
Body – The part of a fuse enclosing the fuse elements and
supporting the contacts. Body is also referred to as cartridge,
tube, or case.
Bolted Fault – A short-circuit that has no electrical resistance
at the point of the fault. It results from a firm mechanical
connection between two conductors, or a conductor and
ground. Bolted faults are characterized by a lack of arcing.
Examples of bolted faults are a heavy wrench lying across two
bare bus bars, or a crossed-phase condition due to incorrect
wiring
Boundaries of Approach – Protection boundaries established
to protect personnel from shock and Arc-Flash hazards.
Calorie – The amount of heat needed to raise the temperature
of one gram of water by one degree Celsius.1 cal/cm² is
equivalent to the exposure on the tip of a finger by a cigarette
lighter for one second.
Cartridge Fuse – A fuse that contains a current-responsive
element inside a tubular fuse body with cylindrical ferrules (end
caps).
Case Size (also Cartridge Size) – The maximum allowable
ampere rating of a cartridge fuse having defined dimensions
and shape. For example, case sizes for UL Listed Class H, K, J,
RK1, and RK5 are 30, 60, 100, 200, 400, and 600 amperes. The
physical dimensions vary with fuse class, voltage, and ampere
rating. UL Standards establish the dimensions for each UL
Fuse Class. This catalog’s product section contains case size
dimensions for all Littelfuse POWR-GARD® fuses.
Clearing I2
t – See Ampere-Square-Seconds (I2
t).
Clearing Time (see Figure 11) – The time between the initiation
of an overcurrent condition to the point at which the overcurrent
is interrupted. Clearing Time is the sum of Melting Time and
Arcing Time.
Conformal Coating – Coating used to protect circuit boards
from pollutants, corrosion, and mildew.
Contacts (Fuse) – The external metal parts of the fuse used to
complete the circuit. These consist of ferrules, caps, blades or
terminals, as shown in this catalog.
Coordination or Coordinated System – See Selective
Coordination.
Continuous Load – An electrical load where the maximum
current is expected to continue for three hours or more.
CT Loop – The electrical circuit between a current transformer
and a protection relay or monitoring device.
Current-Based Protection – Protection parameters (trip-levels/
data collection etc.) derived from current levels in a circuit.
Current-limiting Fuse (See Figure 13) – A fuse which, when
interrupting currents within its current-limiting range, reduces
the current in the faulted circuit to a magnitude substantially
less than that obtainable in the same circuit if the device was
replaced with a solid conductor having comparable impedance.
To be labeled “current limiting,” a fuse must mate with a
fuse block or fuse holder that has either a rejection feature or
dimensions that will reject non-current-limiting fuses.
Figure 13 – Current-limiting Fuse
Current-limiting Range - For an individual overcurrent
protective device, the current-limiting range begins at the
lowest value of rms symmetrical current at which the device
becomes current-limiting (the threshold current) and extends
to the maximum interrupting capacity of the device. See
definitions of Threshold Current and Interrupting Capacity.
Current Rating – See Ampere Rating.
Current Transformer (CT) – A transformer that produces a
current in its secondary circuit in a known proportion to current
in its primary circuit.
Data Logging – Collecting and storing information in a
format that can be reviewed for trending, troubleshooting and
reporting.
DFT (Discrete Fourier Transform) Harmonic Filter – An
algorithm used to measure the fundamental component of
current and voltage and reject harmonics. This allows lower trip
settings and eliminates nuisance trips due to harmonics.
TERMS AND DEFINITIONS
INSTANTANEOUS ARC VOLTAGE
183% OF CYCLEPEAK
RESTORED VOLTAGE
Figure 2
PEAK
Current
Time
Fault occurs
Arc is extinguished
Current before fault
Fuse opens and
clears short circuit
in less than ½ cycle
Current which would
flow if not interrupted
Figure 12 – Transient overvoltage during arcing time
Littelfuse.com 274 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
Distance to Arc – Refers to the distance from the receiving
surface to the arc center. The value used for most calculations is
typically 18 inches.
Dual-Element Fuse – A fuse with internal construction
consisting of a separate time-delay overload element(s) that
interrupts overcurrents up to approximately 500%-600% of
its nominal rating, plus separate fuse links that quickly open
higher value currents. All dual-element fuses have time delay,
but, since there are other methods of achieving time delay,
not all time-delay fuses have dual-element construction.
See Time-Delay Fuse.
EFCT (Earth Fault Current Transformer) – A current
transformer engineered to accurately detect low level
ground-fault current.
Electrical Hazard Analysis – A study performed to identify the
potential electrical hazards to which personnel may be exposed.
The analysis should address both shock and Arc-Flash hazards.
Electrically Safe Work Condition – Condition where the
equipment and or circuit components have been disconnected
from electrical energy sources, locked/tagged out, and tested to
verify all sources of power are removed.
Element – A fuse’s internal current-carrying components that
melt and interrupt the current when subjected to an overcurrent
of sufficient duration or value. Also called fuse link.
Fail-Safe Mode (also known as Under Voltage or UV) –
Output relay is energized during normal (not tripped) operation.
If the protection relay loses supply voltage, the system will trip
or alarm.
Fast-Acting Fuse – May also be termed Normal-opening fuse,
this is a fuse that has no intentional or built-in time delay. Actual
opening time is determined by the fuse class, the overcurrent,
and other conditions. Fast-acting is indicated on the fuse label
by “Fast-Acting”, “F-A”, “F”, or other suitable marking.
Fault – Same as Short-Circuit and used interchangeably.
Fault Current – The current that flows when a phase conductor
is faulted to another phase or ground.
Feeder Protection – Overcurrent or overvoltage devices
installed on a feeder circuit to supplement, compliment or
replace downstream protective devices.
Filler – A material, such as granular quartz, used to fill a section
or sections of a fuse and aid in arc quenching.
Filter – An algorithm used to measure the fundamental
component of current and voltage and reject harmonics. This
allows lower trip settings and eliminates nuisance trips due to
harmonics.
Flash Hazard Analysis – A study that analyzes potential
exposure to Arc-Flash hazards. The outcome of the study
establishes Incident Energy levels, Hazard Risk Categories,
Flash Protection Boundaries, and required PPE. It also helps
define safe work practices.
Flash Protection Boundary – A protection boundary
established to protect personnel from Arc-Flash hazards.
The Flash Protection Boundary is the distance at which
an unprotected worker can receive a second-degree
burn to bare skin.
Fuse – An overcurrent protective device consisting of one
or more current carrying elements enclosed in a body fitted
with contacts, so that the fuse may be readily inserted into or
removed from an electrical circuit. The elements are heated by
the current passing through them, thus interrupting current flow
by melting during specified overcurrent conditions.
Ground Continuity Monitor - A protection relay that
continuously monitors a ground conductor and trips if this
conductor opens or shorts to the ground-check conductor.
Ground-Fault – Unintentional contact between a phase
conductor and ground or equipment frame. The words
“ground” and “earth” are used interchangeably when it comes
to electrical applications.
Ground-Fault Current – The current that returns to the supply
neutral through the ground-fault and the ground-return path.
Ground-Fault Protection – A system that protects
equipment from damaging ground-fault current by operating a
disconnecting means to open all ungrounded conductors of a
faulted circuit. This protection is at current levels less than those
required to operate a supply circuit overcurrent device.
Ground-Fault Relay – A protection relay designed to detect
a phase-to-ground-fault on a system and trip when current
exceeds the pickup setting for greater than the trip time setting.
Hazard Risk Category – A classification of risks (from 0 to
4) defined by NFPA 70E®. Each category requires PPE and is
related to incident energy levels.
High-Resistance Grounding – Achieved when a neutralground resistor (NGR) is used to limit the current to a low level.
Typically high-resistance grounding is 25 A and lower. See LowResistance Grounding.
I
2
t – See Ampere-Squared-Seconds (I2
t).
IEEE Device Numbers – The devices in switching equipment
are referred to by numbers, according to the functions they
perform. These numbers are based on a system which has
been adopted as standard for automatic switchgear by IEEE.
This system is used on connection diagrams, in instruction
books and in specifications.
IEC Type 2 Protection – Fused protection for control
components that prevents damage to these components under
short-circuit conditions. See definition of No Damage.
TERMS AND DEFINITIONS
© 2022 Littelfuse, Inc. 275 Littelfuse.com
Technical Application Guide
Technical
11
Incident Energy – The amount of thermal energy impressed on
a surface generated during an electrical arc at a certain distance
from the arc. Typically measured in cal/cm2
.
Instantaneous Peak Current (Ip or Ipeak) – The maximum
instantaneous current value developed during the first
half-cycle (180 electrical degrees) after fault inception. The
peak current determines magnetic stress within the circuit.
See Symmetrical Current.
Insulation Monitoring – Monitoring the resistance from phase
to ground to detect insulation breakdown on a system.
Interrupting Capacity (AIC) – The highest available
symmetrical rms alternating current (for DC fuses the highest
direct current) at which the protective device has been tested,
and which it has interrupted safely under standardized test
conditions. The device must interrupt all available overcurrents
up to its interrupting capacity. Also commonly called interrupting
rating. See Interrupting Rating below.
Interrupting Rating (IR, I.R., AIR or A.I.R.) – The highest RMS
symmetrical current, at specified test conditions, which the
device is rated to interrupt. The difference between interrupting
capacity and interrupting rating is in the test circuits used to
establish the ratings.
Inverse-time Characteristics – A term describing protective
devices whose opening time decreases with increasing current.
IR or I.R. (also AIR or A.I.R.) – See Interrupting Rating above.
Kiloamperes (kA) – 1,000 amperes.
Knife Blade Fuse – Cylindrical or square body fuses with flat
blade terminals extending from the fuse body. Knife blades may
be designed for insertion into mating fuse clips and/or
to be bolted in place. Knife blade terminals may include a
rejection feature that mates with a similar feature on a fuse
block of the same class.
Leakage Current – Very low level ground-fault current, typically
measured in milliamperes (mA, thousandths of amperes).
Limited Approach Boundary – An approach boundary
to protect personnel from shock. A boundary distance is
established from an energized part based on system voltage. To
enter this boundary, unqualified persons must be accompanied
with a qualified person and use the proper PPE.
Low-Resistance Grounding – A Resistance Grounded System
that allows high currents to flow during a ground-fault. Typically
100A and higher is considered Low-Resistance grounding. See
High-Resistance Grounding.
Melting Current (see Figure 11) – The current that flows
through the fuse from the initiation of an overcurrent condition
to the instant arcing begins inside the fuse.
Melting I2
t – See Ampere-Squared-Seconds (I2
t).
Melting Time (see Figure 11) – The time span from the initiation
of an overcurrent condition to the instant arcing begins inside
the fuse.
Motor Protection – Overload protection designed to protect
the windings of a motor from high current levels. Modern
motor protection relays add many additional features, including
metering, data logging and communications.
NEC – In general, the National Electrical Code® (NEC®).
Specifically, as referenced herein, NEC refers to NFPA
Standard 70, National Electrical Code, National Fire Protection
Association, Quincy, MA 02269.
Sections of the NEC reprinted herein, and/or quotations
there from, are done so with permission. The quoted and
reprinted sections are not the official position of the National
Fire Protection Association which is represented only by the
Standard in its entirety. Readers are cautioned that not all
authorities have adopted the most recent edition of the NEC;
many are still using earlier editions.
Neutral Grounding Resistor (NGR) – A current-limiting
resistor connecting the power-system neutral to ground.
No Damage – A term describing the requirement that a system
component be in essentially the same condition after the
occurrence of a short-circuit as prior to the short-circuit.
Non-renewable Fuse – A fuse that must be replaced
after it has opened due to an overcurrent. It cannot be
restored to service.
Normal-opening Fuse – See Fast-Acting Fuse.
Nuisance Trip – An undesired change in relay output due to
misinterpreted readings.
One-time Fuse – Technically, any non-renewable fuse. However,
the term usually refers to UL Class H fuses and to fast acting
UL Class K5 fuses. Such fuses are not current-limiting and do
not have a rejection feature. One-time fuses are also referred to
as “Code” fuses.
Open CT Hazard – An open-circuited CT secondary
can develop a dangerously high voltage when the
primary is energized.
Overcurrent – Any current larger than the equipment,
conductor, or devices are rated to carry under
specified conditions.
Overload – An overcurrent that is confined to the normal
current path (e.g., not a short-circuit), which if allowed
to persist, will cause damage to equipment and/or
wiring. Additional information regarding fuse applications
for overload protection can be found earlier in this
Technical Application Guide.
TERMS AND DEFINITIONS
Littelfuse.com 276 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
Peak Let-through Current (See Figure 14) – The maximum
instantaneous current that passes through an overcurrent
protective device during its total clearing time when the
available current is within its current-limiting range.
Figure 14 – Peak Let-through Current
Phase Current – The current present in a phase conductor.
Phase Voltage – The voltage measured between a phase
conductor and ground.
Power Factor (X/R) – As used in overcurrent protection,
power factor is the relationship between the inductive
reactance (X) and the resistance (R) in the system during a
fault. Under normal conditions a system may be operating at
a 0.85 power factor (85%). When a fault occurs, much of the
system resistance is shorted out and the power factor may
drop to 25% or less. This may cause the current to become
asymmetrical. See definition of Symmetrical Current. The
UL test circuits used to test fuses with interrupting ratings
exceeding 10,000 amperes are required to have a power factor
of 20% or less. Since the power factor of test circuits tends to
vary during test procedures, actual test circuits are usually set
to a 15% power factor. The resulting asymmetrical current has
an rms value of 1.33 times the available symmetrical rms. The
instantaneous peak current of the first peak after the fault is
2.309 times the available symmetrical rms.
PPE – An acronym for Personal Protective Equipment. It can
include clothing, tools, and equipment.
Primary Rating (for CTs) – The current rating of the primary
side of a current transformer. The first number in the ratio 500:5
is the primary rating. Under ideal conditions 500 A of primary
current flow through the CT will produce 5 A of current out the
secondary terminals.
Prohibited Approach Boundary – An approach boundary
to protect personnel from shock. Work in this boundary
is considered the same as making direct contact with an
energized part. Only qualified persons are allowed to enter this
boundary and they must use the proper PPE.
Prospective Current – See Available Short-Circuit Current.
Protection Boundaries – Boundaries established to protect
personnel from electrical hazards.
Pulsing – Modulating the ground-fault current on a resistance
grounded system using a contactor to short out part of the NGR
elements (or to open one of two NGRs connected in parallel).
Another version of pulsing is imposing a higher frequency signal
on power lines and using a wand detector to locate the point of
fault on a conductor.
QPL (Qualified Products List) – A list of approved fuses and
holders that meet various Military specifications.
Qualified Person – A person who is trained, knowledgeable,
and has demonstrated skills on the construction and operation
of the equipment, and can recognize and avoid electrical
hazards that may be encountered.
Rating – A designated limit of operating characteristics based
on definite conditions such as current rating, voltage rating and
interrupting rating.
Rectifier Fuse – See High-Speed Semiconductor Fuses.
Rejection Feature – The physical characteristic(s) of a fuse
block or fuse holder that prevents the insertion of a fuse unless
it has the proper mating characteristics. This may be achieved
through the use of slots, grooves, projections, or the actual
physical dimensions of the fuse. This feature prevents the
substitution of fuses of a Class or size other than the Class
and size intended.
Relay – An electrical switch that opens and closes a
contact (or contacts) under the control of another circuit.
Typically an electromagnet.
Renewable Element (also Renewable Link) – A renewable
fuse current-carrying component that is replaced to restore
the fuse to a functional condition after the link opens due to an
overcurrent condition.
Renewable Fuse – A fuse that may be readily restored to
service by replacing the renewable element after operation.
Resistance-Grounded System – An electrical system in
which the transformer or generator neutral is connected to
ground through a current-limiting resistor. See Solidly Grounded
System, Ungrounded System.
Restricted Approach Boundary – An approach boundary
to protect personnel from shock. A boundary distance is
established from an energized part based on system voltage.
Only qualified persons are allowed in the boundary and they
must use the proper PPE.
Selective Coordination (See Figure 15) – In a selectively
coordinated system, only the protective device immediately
on the line side of an overcurrent opens. Upstream protective
devices remain closed. All other equipment remains in service,
which simplifies the identification and location of overloaded
TERMS AND DEFINITIONS Current
Time
Peak current which would
occur without current limitation
Peak Let-Thru Current
© 2022 Littelfuse, Inc. 277 Littelfuse.com
Technical Application Guide
Technical
11
equipment or short-circuits. For additional information, refer
to the Selective Coordination pages of this Technical
Application Guide.
Figure 15 – Selective Coordination Example
Semiconductor Fuse – (Also known as High-Speed Fuses)
A fuse specifically designed to protect semiconductors such
as silicon rectifiers, silicon-controlled rectifiers, thyristors,
transistors, and similar components.
Sensitive Ground-Fault Protection – Protection designed
to accurately detect extremely low ground-fault current levels
without nuisance tripping.
Shock – A trauma subjected to the body by electrical current.
When personnel come in contact with energized conductors,
it can result in current flowing through their body often causing
serious injury or death.
Short-Circuit (See Figure 16) – A current flowing outside its
normal path, caused by a breakdown of insulation or by faulty
equipment connections. In a short-circuit, current bypasses the
normal load. Current is determined by the system impedance
(AC resistance) rather than the load impedance. Short-circuit
currents may vary from fractions of an ampere to 200,000
amperes or more.
Short-Circuit Current Rating (SCCR) – The prospective
symmetrical fault current at a nominal voltage to which an
apparatus or system is able to be connected without sustaining
damage exceeding defined acceptance criteria.
Short-Circuit Rating – The maximum RMS symmetrical shortcircuit current at which a given piece of equipment has been
tested under specified conditions, and which, at the end of the
test is in essentially the same condition as prior to the test.
Short-circuit ratings (also called withstand ratings) apply to
equipment that will be subjected to fault currents, but which
are not required to interrupt them. This includes switches,
busway (bus duct), switchgear and switchboard structures,
motor control centers and transformers.
Most short-circuit ratings are based on tests which last three
complete electrical cycles (0.05 seconds). However, if the
equipment is protected during the test by fuses or by a circuit
breaker with instantaneous trips, the test duration is the time
required for the overcurrent protective device to open
the circuit.
When protected as such during testing, the equipment
instructions and labels must indicate that the equipment
shall be protected by a given fuse class and rating or by a
specific make, type, and rating of circuit breaker. Circuit
breakers equipped with short-delay trip elements instead of
instantaneous trip elements have withstand (short-circuit)
ratings in addition to their interrupting rating. The breaker must
be able to withstand the available fault current during the time
that opening is delayed.
Solidly Grounded System – An electrical system in which
the neutral point of a wye connected supply transformer is
connected directly to ground.
Symmetrical Current – The terms “Symmetrical Current”
and “Asymmetrical Current” describe an AC wave symmetry
around the zero axis. The current is symmetrical when the
peak currents above and below the zero axis are equal in value,
as shown in Figure 17 (next page). If the peak currents are
not equal, as shown in Figure 18, the current is considered
asymmetrical. The degree of asymmetry during a fault is
determined by the change in power factor (X/R) and the point in
the voltage wave when the fault occurs. See definition of Power
Factor. In general, lower short-circuit power factors increase the
degree of asymmetry.
TERMS AND DEFINITIONS
In a selective system:
For a fault at "X" only fuse "C" will open.
For a fault at "Y" only fuse "F" will open. X
B C D E
A
F G H J
Y CURRENT FLOW
GEN.
LOAD
Accidental
connection
creates fault GEN.
LOAD
In a "normal" circuit,
current is determined by
load IMPEDANCE
(Heavy lines indicate
increased current)
In a short-circuit, current is limited
only by impedance of fault path.
Current may increase to many times
load current.
Figure 16 – Current Flow in Normal and Short Circuit Situations
Littelfuse.com 278 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
Figure 17 – Symmetrical Current
Figure 18 – Asymmetrical Current
Threshold Current – The minimum current for a given fuse
size and type at which the fuse becomes current-limiting. It is
the lowest value of available rms symmetrical current that will
cause the device to begin opening within the first 1/4 cycle (90
electrical degrees) and completely clear the circuit within 1/2
cycle (180 electrical degrees). The approximate threshold current
can be determined from the fuse’s peak let-through charts.
(See Figure 19.)
Threshold Ratio – Consists of the threshold current divided
by the ampere rating of a specific type or class of overcurrent
device. A fuse with a threshold ratio of 15 becomes currentlimiting at 15 times its current rating.
Time-Delay Fuse – Fuses designed with an intentional, built-in
delay in opening. When compared to fast-opening fuses, timedelay fuses have an increased opening time for overcurrents
between approximately 200% and 600% of the fuse’s current
rating. Time-delay is indicated on the fuse label by “Time-Delay”,
“T-D”, “D”, or other suitable marking. Time-delay in the overload
range (200%-600% of the fuse rating) permits the fuse to
withstand system switching surges, motor starting currents, and
other harmless temporary overcurrents.
UL Standards require time-delay Class H, K, RK1, RK5, and J
fuses to hold 500% of their normal current rating for a minimum
of 10 seconds. They must also pass the same opening time
tests (135% and 200% of current rating) as fast acting fuses.
Time-delay Class CC, CD, G, Plug, and Miscellaneous fuses
have different requirements. For more information, please
refer to the corresponding descriptions provided in the Product
Information Section.
For the UL Standard, Class L fuses have no standard timedelay. The time-delay varies from series to series for a given
manufacturer, as well as from manufacturer to manufacturer. For
reference, Littelfuse KLPC series POWR-PRO® fuses hold 500%
of rated current for a minimum of 10 seconds.
Ungrounded System – An electrical system in which no point
in the system is intentionally grounded. This was most common
in process industries where continuity of service during a singlephase-to-ground-fault was required.
Unqualified Person – A person that does not possess
all the skills and knowledge or has not been trained for a
particular task.
Voltage Rating – The maximum rms AC voltage and/or the
maximum DC voltage at which the fuse is designed to operate.
For example, fuses rated 600 volts and below may be applied
at any voltage less than their rating. There is no rule for applying
AC fuses in DC circuits such as applying the fuse at half its AC
voltage rating. Fuses used on DC circuits must have DC ratings.
Withstand Rating – See Short-Circuit.
TERMS AND DEFINITIONS
Equal
Peaks
Symmertrical Current
Zero Axis
Unequal
Peaks
Asymmertrical Current
Zero Axis
Zero Axis
Unequal
Peaks
Asymmertrical Current
Zero Axis
1000
4000
A
B
Fuse approximate
threshold current = 4000A
Peak let-through current
Available Fault Current Symmetrical RMS Amperes
Peak Let-Through in Amperes
Figure 19 – Determining Threshold Current from Peak
Let-through Chart
© 2022 Littelfuse, Inc. 279 Littelfuse.com
Technical Application Guide
Technical
11
Using AC Motor Protection Tables to Select
Fuse Ratings
Time-delay RK1 and RK5 fuse ratings selected in
accordance with the following recommendations also
meet NEC® requirements for Motor Branch circuit and
Short-Circuit Protection.
Selecting Fuses for Motor Running Protection
Based on Motor Horsepower
Motor horsepower and motor Full Load Amperes (FLA)
shown are taken from NEC® Tables 430.248 through
430.250 covering standard speed AC motors with normal
torque characteristics. Fuse ratings for motors with special
characteristics may need to vary from given values.
If motor running protection will be provided by the
fuses, select fuse ratings for correct type of motor
from Motor Protection Table Columns headed,
“Without Overload Relays.”
If overload relays will provide principal motor running
protection, select fuse ratings for correct type of motor
from Motor Protection Table Columns headed, “Back-up
Running Protection” or “With Overload Relays.” Fuse ratings
selected from these columns coordinate with most UL
Class 10 and 20 overload relays which covers over 90%
of motor applications.
Selecting Fuses for Motor Running Protection
Based on Motor Actual Full Load Currents
Better protection is achieved when fuse ratings are based on
motor actual FLA obtained from motor nameplates. Locate
motor nameplate FLA in the column appropriate for the
type of motor and type of protection required. Then select
the corresponding ampere rating of the fuse from the first
column of that line.
MOTOR PROTECTION TABLES
TIME DELAY
UL CLASS RK1
OR RK5 FUSE
AMPERE RATING
MOTOR RUNNING PROTECTION
(USED WITHOUT PROPERLY SIZED
OVERLOAD RELAYS)
MOTOR FULL-LOAD AMPS
BACK-UP MOTOR RUNNING
PROTECTION (USED WITH PROPERLY
SIZED OVERLOAD RELAYS)
MOTOR FULL-LOAD AMPS
MOTOR SERVICE
FACTOR OF 1.15 OR
GREATER OR WITH
TEMP. RISE NOT
OVER 40°C.
MOTOR SERVICE
FACTOR LESS
THAN 1.15 OR
WITH TEMP. RISE
GREATER
THAN 40°C.
MOTOR SERVICE
FACTOR OF 1.15 OR
GREATER OR WITH
TEMP. RISE NOT
OVER 40°C.
MOTOR SERVICE
FACTOR LESS
THAN 1.15 OR
WITH TEMP. RISE
GREATER
THAN 40°C
1
⁄10 0.08-0.09 0.09-0.10 0-0.08 0-0.09 1
⁄8 0.10-0.11 0.11-0.125 0.09-0.10 0.10-0.11 15⁄100 0.12-0.15 0.14-0.15 0.11-0.12 0.12-0.13 2 ⁄10 0.16-0.19 0.18-0.20 0.13-0.16 0.14-0.17 1
⁄4 0.20-0.23 0.22-0.25 0.17-0.20 0.18-0.22 3
⁄10 0.24-0.30 0.27-0.30 0.21-0.24 0.23-0.26 4
⁄10 0.32-0.39 0.35-0.40 0.25-0.32 0.27-0.35 1
⁄2 0.40-0.47 0.44-0.50 0.33-0.40 0.36-0.43 6
⁄10 0.48-0.60 0.53-0.60 0.41-0.48 0.44-0.52 8
⁄10 0.64-0.79 0.70-0.80 0.49-0.64 0.53-0.70
1 0.80-0.89 0.87-0.97 0.65-0.80 0.71-0.87
11
⁄8 0.90-0.99 0.98-1.08 0.81-0.90 0.88-0.98
11
⁄4 1.00-1.11 1.09-1.21 0.91-1.00 0.99-1.09
14
⁄10 1.12-1.19 1.22-1.30 1.01-1.12 1.10-1.22
11
⁄2 1.20-1.27 1.31-1.39 1.13-1.20 1.23-1.30
16
⁄10 1.28-1.43 1.40-1.56 1.21-1.28 1.31-1.39
18
⁄10 1.44-1.59 1.57-1.73 1.29-1.44 1.40-1.57
2 1.60-1.79 1.74-1.95 1.45-1.60 1.58-1.74
21
⁄4 1.80-1.99 1.96-2.17 1.61-1.80 1.75-1.96
21
⁄2 2.00-2.23 2.18-2.43 1.81-2.00 1.97-2.17
28
⁄10 2.24-2.39 2.44-2.60 2.01-2.24 2.18-2.43
3 2.40-2.55 2.61-2.78 2.25-2.40 2.44-2.60
32 ⁄10 2.56-2.79 2.79-3.04 2.41-2.56 2.61-2.78
31
⁄2 2.80-3.19 3.05-3.47 2.57-2.80 2.79-3.04
4 3.20-3.59 3.48-3.91 2.81-3.20 3.05-3.48
41
⁄2 3.60-3.99 3.92-4.34 3.21-3.60 3.49-3.91
5 4.00-4.47 4.35-4.86 3.61-4.00 3.92-4.35
56
⁄10 4.48-4.79 4.87-5.21 4.01-4.48 4.36-4.87
6 4.80-4.99 5.22-5.43 4.49-4.80 4.88-5.22
61
⁄4 5.00-5.59 5.44-6.08 4.81-5.00 5.23-5.43
7 5.60-5.99 6.09-6.52 5.01-5.60 5.44-6.09
71
⁄2 6.00-6.39 6.53-6.95 5.61-6.00 6.10-6.52
8 6.40-7.19 6.96-7.82 6.01-6.40 6.53-6.96
9 7.20-7.99 7.83-8.69 6.41-7.20 6.97-7.83
10 8.00-9.59 8.70-10.00 7.21-8.00 7.84-8.70
12 9.60-11.99 10.44-12.00 8.01-9.60 8.71-10.43
15 12.00-13.99 13.05-15.00 9.61-12.00 10.44-13.04
171
⁄2 14.00-15.99 15.22-17.39 12.01-14.00 13.05- 15.21
20 16.00-19.99 17.40-20.00 14.01-16.00 15.22-17.39
25 20.00-23.99 21.74-25.00 16.01-20.00 17.40-21.74
30 24.00-27.99 26.09-30.00 20.01-24.00 21.75-26.09
35 28.00-31.99 30.44-34.78 24.01-28.00 26.10-30.43
40 32.00-35.99 34.79-39.12 28.01-32.00 30.44-37.78
45 36.00-39.99 39.13-43.47 32.01-36.00 37.79-39.13
50 40.00-47.99 43.48-50.00 36.01-40.00 39.14-43.48
60 48.00-55.99 52.17-60.00 40.01-48.00 43.49-52.17
70 56.00-59.99 60.87-65.21 48.01-56.00 52.18-60.87
75 60.00-63.99 65.22-69.56 56.01-60.00 60.88-65.22
80 64.00-71.99 69.57-78.25 60.01-64.00 65.23-69.57
90 72.00-79.99 78.26-86.95 64.01-72.00 69.58-78.26
100 80.00-87.99 86.96-95.64 72.01-80.00 78.27-86.96
110 88.00-99.99 95.65-108.69 80.01-88.00 86.97-95.65
125 100.00-119.99 108.70-125.00 88.01-100.00 95.66-108.70
150 120.00-139.99 131.30-150.00 100.01-120.00 108.71-130.43
175 140.00-159.99 152.17-173.90 120.01-140.00 130.44-152.17
200 160.00-179.99 173.91-195.64 140.01-160.00 152.18-173.91
225 180.00-199.99 195.65-217.38 160.01-180.00 173.92-195.62
250 200.00-239.99 217.39-250.00 180.01-200.00 195.63-217.39
300 240.00-279.99 260.87-300.00 200.01-240.00 217.40-260.87
350 280.00-319.99 304.35-347.82 240.01-280.00 260.88-304.35
400 320.00-359.99 347.83-391.29 280.01-320.00 304.36-347.83
450 360.00-399.99 391.30-434.77 320.01-360.00 347.84-391.30
500 400.00-479.99 434.78-500.00 360.01-400.00 391.31-434.78
600 480.00-600.00 521.74-600.00 400.01-480.00 434.79-521.74
Selection of Class RK5 Fuses (FLNR_ID / FLSR_ID / IDSR Series) or POWR-PRO® Class
RK1 Fuses (LLNRK / LLSRK / LLSRK_ID Series) Based on Motor Full Load Amps
Motor Protection
White Paper
Download our white paper
on motor protection at
littelfuse.com/technicalcenter
Littelfuse.com 280 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
MOTOR PROTECTION TABLES
MOTOR
HP
FULL LOAD
AMPS
WITHOUT OVERLOAD
RELAYS WITH OVERLOAD RELAYS
SWITCH OR
FUSE CLIP
RATING
S.F. = 1.15 OR
MORE, TEMP
RISE NOT
OVER 40°C
S.F. = LESS
THAN 1.15 OR
TEMP RISE
MORE THAN
40°C
S.F. = 1.15 OR
MORE, TEMP
RISE NOT
OVER 40°C
S.F. = LESS
THAN 1.15 OR
TEMP RISE
MORE THAN
40°C
460 VOLT 3-PHASE MOTORS (480V CIRCUIT) 1
⁄2 1.1 14
⁄10 11
⁄4 14
⁄10 14
⁄10 30 3 ⁄4 1.6 2 18 ⁄10 2 2 30
1 2.1 21
⁄2 21
⁄4 28 ⁄10 21
⁄2 30
11
⁄2 3.0 31
⁄2 32 ⁄10 4 31
⁄2 30
2 3.4 4 31
⁄2 41
⁄2 4 30
3 4.8 56 ⁄10 5 6 56 ⁄10 30
5 7.6 9 8 10 9 30
71
⁄2 11 12 12 15 15 30
10 14 171
⁄2 15 171
⁄2 171
⁄2 30
15 21 25 20 30 25 30
20 27 30* 30* 35 35 60
25 34 40 35 45 40 60
30 40 50 45 50 50 60
40 54 60* 60* 70 60* 100
50 65 80 70 90 75 100
60 77 90 80 100 90 100
75 96 110 110 125 125 200
100 124 150 125 175 150 200
125 156 175 175 200 200 200
150 180 225 200* 225 225 400
200 240 300 250 300 300 400
575 VOLT 3-PHASE MOTORS (600V CIRCUIT) 1
⁄2 0.9 11
⁄8 1 11
⁄8 11
⁄8 30 3 ⁄4 1.3 16 ⁄10 14
⁄10 16 ⁄10 16 ⁄10 30
1 1.7 2 18 ⁄10 21
⁄4 2 30
11
⁄2 2.4 3 21
⁄2 3 3 30
2 2.7 32 ⁄10 28 ⁄10 31
⁄2 32 ⁄10 30
3 3.9 41
⁄2 4 5 41
⁄2 30
5 6.1 71
⁄2 7 8 71
⁄2 30
71
⁄2 9 10 10 12 12 30
10 11 12 12 15 15 30
15 17 20 171
⁄2 25 20 30
20 22 25 25 30 30 30
25 27 30* 30* 35 35 60
30 32 40 35 40 40 60
40 41 50 45 60 50 60
50 52 60 60 70† 60 60
60 62 75 70 80 75 100
75 77 90 80 100 90 100
100 99 110 110 125 125 200
125 125 150 125 175 150 200
150 144 175 150 200 175 200
200 192 225 200* 250 225 400
NOTES
S.F. = Motor Service Factor
* Fuse Reducers Required
† 100 Amp Switch Required
MOTOR
HP
FULL LOAD
AMPS
WITHOUT OVERLOAD
RELAYS WITH OVERLOAD RELAYS
SWITCH OR
FUSE CLIP
RATING
S.F. = 1.15 OR
MORE, TEMP
RISE NOT
OVER 40°C
S.F. = LESS
THAN 1.15 OR
TEMP RISE
MORE THAN
40°C
S.F. = 1.15 OR
MORE, TEMP
RISE NOT
OVER 40°C
S.F. = LESS
THAN 1.15 OR
TEMP RISE
MORE THAN
40°C
120 VOLT 1-PHASE MOTORS (120V CIRCUIT) 1
⁄6 4.4 5 5 56 ⁄10 56 ⁄10 30 1
⁄4 5.8 7 61
⁄4 71
⁄2 7 30 1
⁄3 7.2 9 8 9 9 30 1
⁄2 9.8 12 10 15 12 30 3 ⁄4 13.8 15 15 171
⁄2 171
⁄2 30
1 16 20 171
⁄2 20 20 30
11
⁄2 20 25 20 25 25 30
2 24 30 25 30 30 30
230 VOLT 1-PHASE MOTORS (240V CIRCUIT) 1
⁄6 2.2 21
⁄2 21
⁄2 28 ⁄10 28 ⁄10 30 1
⁄4 2.9 31
⁄2 32 ⁄10 4 31
⁄2 30 1
⁄3 3.6 41
⁄2 4 41
⁄2 41
⁄2 30 1
⁄2 4.9 56 ⁄10 56 ⁄10 61
⁄4 6 30 3 ⁄4 6.9 8 71
⁄2 9 8 30
1 8 10 9 10 10 30
11
⁄2 10 12 10 15 12 30
2 12 15 12 15 15 30
3 17 20 171
⁄2 25 20 30
5 28 35 30* 35 35 60
71
⁄2 40 50 45 50 50 60
10 50 60 50 70 60 60
200 VOLT 3-PHASE MOTORS (208V CIRCUIT) 1
⁄2 2.5 3 28 ⁄10 32 ⁄10 3 30 3 ⁄4 3.7 41
⁄2 4 5 41
⁄2 30
1 4.8 6 56 ⁄10 61
⁄4 6 30
11
⁄2 6.9 8 71
⁄2 71
⁄2 8 30
2 7.8 9 8 10 9 30
3 11 12 12 15 15 30
5 17.5 20 20 25 25 30
71
⁄2 25.3 30* 25* 35 30* 60
10 32.2 40 35 45 40 60
15 48.3 60 50 70† 60 60
20 62.1 75 70 80 75 100
25 78.2 90 80 100 90 100
30 92 110 100* 125 110 200
40 120 150 125 150 150 200
50 150 175 150 200 175 200
60 177 200* 200* 225 225 400
75 221 250 250 300 300 400
100 285 350 300 400 350 400
125 359 400* 400* 450 450 600
150 414 500 450 600 500 600
230 VOLT 3-PHASE MOTORS (240V CIRCUIT) 1
⁄2 2.2 28 ⁄10 21
⁄2 28 ⁄10 28 ⁄10 30 3 ⁄4 3.2 4 31
⁄2 4 4 30
1 4.2 5 41
⁄2 56 ⁄10 5 30
11
⁄2 6.0 71
⁄2 61
⁄4 71
⁄2 71
⁄2 30
2 6.8 8 71
⁄2 9 8 30
3 9.6 12 10 12 12 30
5 15.2 171
⁄2 171
⁄2 20 171
⁄2 30
71
⁄2 22 25 25 30 30 30
10 28 35 30* 35 35 60
15 42 50 45 60 50 60
20 54 60* 60* 70 70 100
25 68 80 75 90 80 100
30 80 100 90 100 100 100
40 104 125 110 150 125 200
50 130 150 150 175 150 200
60 154 175 175 200 200 200
75 192 225 200* 250 225 400
100 248 300 250 350 300 400
125 312 350 350 400 400 400
150 360 450 400* 450 450 600
200 480 600 500 600 600 600
Selection of Class RK5 Fuses (FLNR_ID / FLSR_ID / IDSR Series) or POWR-PRO® Class
RK1 Fuses (LLNRK / LLSRK / LLSRK_ID Series) Based on Motor Horsepower
Motor Protection
White Paper
Download our white paper
on motor protection at
littelfuse.com/technicalcenter
© 2022 Littelfuse, Inc. 281 Littelfuse.com
Technical Application Guide
Technical
11
MOTOR PROTECTION TABLES
MOTOR F.L.A. JTD_ID / JTD
AMPERE RATING MOTOR F.L.A. JTD_ID / JTD
AMPERE RATING MOTOR F.L.A. JTD_ID / JTD
AMPERE RATING
0.00 – 0.60 8 ⁄10 12.1 – 14.5 17 1
/2 76.1 – 84.0 110
0.61 – 0.80 1 14.6 – 17.0 20 84.1 – 90.0 125
0.81 – 1.00 11
⁄4 17.1 – 21.0 25 90.1 – 102 150
1.01 – 1.20 11
⁄2 21.1 – 25.0 30 103 – 125 175
1.21 – 1.65 2 25.1 – 28.5 35 126 – 144 200
1.66 – 2.00 21
⁄2 28.6 – 34.0 40 145 – 162 225
2.01 – 2.40 3 34.1 – 37.0 45 163 – 180 250
2.41 – 3.30 4 37.1 – 41.0 50 181 – 204 300
3.31 – 4.10 5 41.1 – 48.0 60 205 – 240 350
4.11 – 4.90 6 48.1 – 52.0 70 241 – 288 400
4.91 – 6.40 8 52.1 – 59.0 80 289 – 312 450
6.41 – 8.00 10 59.1 – 66.0 90 313 – 360 500
8.01 – 9.80 12 66.1 – 76.0 100 361 – 432 600
9.81 – 12.0 15
NOTE: For severe motor starting conditions, fuses may be sized up to 225% motor F.L.A. (See NEC® Article 430.52 for Exceptions)
MOTOR FULL LOAD CURRENT (F.L.A.)
CCMR
AMPERE RATING
FOR MOTORS WITH AN ACCELERATION
TIME OF 2 SECONDS OR LESS
FOR MOTORS WITH AN ACCELERATION
TIME OF 5 SECONDS OR LESS
FOR MOTORS WITH AN ACCELERATION
TIME OF 8 SECONDS OR LESS
MIN. F.L.A. (1) MAX F.L.A. (3) MIN. F.L.A. (1) MAX F.L.A. (3) MIN F.L.A. (2) MAX F.L.A. (3)
0.2 0.2 0.2 0.2 0.2 0.2 3 ⁄10
0.3 0.4 0.3 0.4 0.3 0.3 1
⁄2
0.4 0.6 0.4 0.5 0.4 0.5 8 ⁄10
0.5 0.7 0.5 0.6 0.5 0.6 1
0.6 1.0 0.6 0.9 0.6 0.8 11
⁄4
0.8 1.1 0.8 1.0 0.7 0.9 11
⁄2
0.9 1.3 0.9 1.1 0.8 1.0 18 ⁄10
1.1 1.4 1.1 1.2 0.9 1.1 2
1.2 2.1 1.2 2.1 1.2 1.8 21
⁄2
1.5 2.6 1.5 2.6 1.4 2.3 3
1.8 3.0 1.8 3.0 1.6 2.6 31
⁄2
2.1 3.4 2.1 3.2 1.8 2.8 4
2.3 3.9 2.3 3.3 2.0 2.8 41
⁄2
2.6 4.3 2.6 3.4 2.3 2.8 5
2.9 4.8 2.9 3.7 2.5 3.1 56 ⁄10
3.3 5.2 3.3 4.0 2.7 3.4 6
3.5 5.4 3.5 4.1 2.8 3.5 61
⁄4
3.6 5.7 3.6 4.2 3.2 3.7 7
4.1 5.8 4.1 4.3 3.4 3.8 71
⁄2
4.3 6.2 4.3 4.6 3.6 4.2 8
4.6 6.9 4.6 5.2 4.0 4.5 9
5.2 7.7 5.2 5.8 4.5 4.9 10
5.8 8.9 5.8 6.6 5.4 5.5 12
6.9 10.0 6.9 7.7 6.7 6.7 15
8.9 13.5 8.9 10.0 6.8 9.0 20
11.5 15.8 11.2 (2) 11.8 9.0 11.0 25
14.3 17.8 13.4 (2) 13.4 10.0 15.0 30
20.7 23.3 16.1 17.9 15.6 15.9 35
23.7 26.7 18.4 20.5 17.8 18.2 40
26.6 30.0 20.7 23.1 20.0 20.4 45
30.0 33.3 23.0 25.6 22.3 22.7 50
35.5 40.0 27.6 30.1 26.7 27.3 60
1 Based on NEC® requirement limiting the rating of time-delay fuses to 175% of motor
F.L.A., or next higher rating.
2 Based on NEC® exception permitting fuse rating to be increased, but not to exceed,
225% motor F.L.A., however per NEC® Article 430.52 Class CC (0-30) fuses can now be
sized up to 400% of motor F.L.A.
3 Based on Littelfuse CCMR time-delay characteristics.
NOTE: These values were calculated for motors with Locked Rotor
Current (LRA), not exceeding the following values:
MOTOR F.L.A. *LRA
0.00 – 1.00 850%
1.01 – 2.00 750%
2.01 – 10.0 650%
10.1 – 17.8 600%
*If motor LRA varies from these values, contact Littelfuse.
Selection of POWR-PRO® Class J Fuses (JTD_ID / JTD Series)
Based on Motor Full Load Amps
Selection of CCMR Time-Delay Fuses Based on Motor Full Load Amps
Littelfuse.com 282 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
CONDENSED CROSS REFERENCE GUIDE
This cross reference covers the most popular fuses for which there is a similar Littelfuse standard item. Furnished for your
convenience, it is meant to serve as a guide for product selection. We suggest you check all applicable specifications before
making substitutions. For special applications, more complete information, and for fuse block and medium voltage fuse cross
referencing, visit Littelfuse.com or call 1-800-TEC-FUSE (1-800-832-3873).
Competitor Littelfuse
10KOTN NLN
10KOTS NLS
50KOTN NLN
50KOTS NLS
170M PSR
A013F L15S
A015F L15S
A015R L15S
A025F L25S
A050F L50S
A060F L60S
A070F L70S
A13X L15S
A25X L25S †
A2D-R LLNRK §
A2K-R KLNR
A3T JLLN
A4BQ KLPC
A4BT KLLU or KLPC
A4BY KLPC or KLLU
A4J JLS
A50P (type 1 & 4) L50S
A50QS L50QS
A60X L60S
A6D-R LLSRK_ID §
A6K-R KLSR
A6T JLLS
A70P L70S
A70QS L70QS
ABC 314
ACK CCK
AG SLC
AGA AGA
AGC 312
AGU (1-30A) BLN
AGW AGW
AJT JTD_ID
AMG MEG
AMI MID
ANL CNL §
ANN CNN_E
ASO SPF
ATC ATO (287)
AT-DE FLNR_ID ‡
ATDR CCMR §
ATM (Mersen) KLKD
ATMR KLKR §
ATQ FLQ
ATQR KLDR
AX 481
A_UD PSR
BAF BLF
BAN BLN
BBS BLS
Competitor Littelfuse
C519 229
C520 225
CHSF L50QS
CJ JLS
CJS JLS
CLF KLPC or KLLU
CLL KLLU or KLPC
CLU KLLU or KLPC
CM BLF
CRN-R FLNR_ID ‡
CRS-R FLSR_ID
CTN-R KLNR
CTS-R KLSR
DCT SPF †
DFJ LDFJ
EBS BLS
ECNR FLNR_ID ‡
ECSR FLSR_ID
ERN FLNR +
ERS FLSR +
FNA FLA
FNM FLM
FNQ FLQ
FNQ-R KLDR
FRN-R FLNR_ID ‡
FRS-R FLSR_ID
FWA L15S † §
FWH L50QS
FWP L70QS
FWX L25S * †
GDA 216
GDB 217
GDC 218
GDL 313
GEB LEB
GEBN LET
GFA 251
GFN FLA
GGC 312
GGM 235
GLR LGR
GMA 235
GMD 239
GMT 481
HCLR KLKR
HCTR KLDR
HEB LEB
HET LET
HLR LHR
HP10M SPF
HP6J SPFJ *
HSJ LDFJ
JDL JTD_ID
JFL JLS
Competitor Littelfuse
JHC JTD_ID
JHL LDFJ
JJN JLLN
JJS JLLS
JKS JLS
KAA L15S
KAB L25S
KAC KLC
KBH L50S
KLM KLKD
KLU KLLU or KLPC
KN KLNR
KON NLN
KOS NLS
KRP-C KLPC
KS KLSR
KTK KLK
KTKR KLKR
KTNR KLNR
KTSR KLSR
KTU 601-2000A LDC
KTU 2500-6000A KLPC
LCL KLPC or KLLU
LCU LDC
LENRK LLNRK
LESRK LLSRK_ID
LKU KLLU
LONRK LLNRK
LOSRK LLSRK_ID
LPCC CCMR
LPJ (SP) JTD_ID
LPNRK (SP) LLNRK §
LPSRK (SP) LLSRK_ID
MCL KLK
MCR 251
MDA 326
MDL 313
MDQ 313
MDV 315
MDX 313
MEN FLM
MEQ FLQ
MID FLA
MOF BLN
MOL BLF
MTH 312
NCLR KLNR
NON NLN
Competitor Littelfuse
NOS NLS
NRN NLN
NRN (15-60A) NLKP
NRS NLS
OT NLN
OTM BLF or BLN
OTN NLN
OTS NLS
PC_UD PSR
PSC PSR
PV-(1-30)A10F SPF
PV-(50A-200A)1XL15 SPNH
REN FLNR +
RES FLSR +
RF FLNR +
RFA L15S
RFC KLC
RFL (750V) L70S (700 V)
RFN (Mersen) FLNR +
RFS (Mersen) FLSR +
RFV L50S
RHN KLNR
RHS KLSR
S SOO
SA SAO
SC SLC
SEC SLC
SF13X L15S
SF25X L25S
SF50P L50S
SF60X L60S
SF70P L70S
SFE SFE
SL SLO
T TOO
TJN JLLN
TJS JLLS
TL TLO
TR FLNR_ID ‡ / §
TRM FLM
TRN-R FLNR_ID ‡ / §
TRS FLSR_ID §
TRS-R FLSR_ID §
XL25X L25S
XL50F L50S *
XL70F L70S *
A fuse may be used in circuits where the fuse’s voltage rating is equal to or greater than the circuit
voltage, unless otherwise stated on the fuse. For example, the FLSR_ID indicating fuse has a voltage
rating of 75-600 volts. This fuse can be used on 600 volts, 480 volts, 250 volts, 125 volts, or 75 volts.
Never use a fuse in a circuit having a higher rated voltage than the fuse.
* Check specific mounting dimensions before substituting.
† Check characteristics and dimensions for application before substituting.
‡ For 1/10 - 30 amperes, order non-indicating FLNR series fuses.
§ Verify voltage for DC applications.
+ Littelfuse product is a non-renewable fuse.
© 2022 Littelfuse, Inc. 283 Littelfuse.com
Technical Application Guide
Technical
11
ALPHANUMERIC INDEX
Product Name Page Number
097023 122
150322 131
1LFS Series 121
215 Series 35
216 Series 35
217 Series 35
218 Series 35
224 Series 34
225 Series 34
229 Series 34
230 Series 34
235 Series 35
239 Series 35
251 Series 33
273 Series 33
287 Series 36
297 Series 36
299 Series 36
312 Series 34
313 Series 34
314 Series 34
315 Series 34
318 Series 34
324 Series 34
325 Series 34
326 Series 34
342 Series 125
345 Series 126
354 Series 121
451 Series 33
477 Series 33
481 Series 51
505 Series 33
571 Series 117
572 Series 117
ATO Series 36
BLF Series 30
BLN Series 30
BLS Series 31
Box Cover Units 167
Bus Bar Series 119
BVSP Series 164
Cable Limiters 67
CCMR Series 27
Class CC 27
Class CD 27
Class G 26
Class J 21
Class K5 20
Class L 8
Product Name Page Number
Class RK1 13
Class RK5 16
Class T 24
CNL Series 64
CNN / CNN_E Series 64
Coordination Panels 155
Cylindrical Fuses 68
Definitions 184
Displays 169
Distribution Blocks 130
E-Rated Fuses 42
Electronic Fuses 32
FBDIN1 110
FLA Series 31
FLM Series 30
FLNR Series 17
FLNR_ID Series 17
FLQ Series 30
FLSR Series 17
FLSR_ID Series 17
FLU Series 31
Fork-Lift Fuses 64
FRCK Series 168
Fuse Blocks, Fuse Holders 90
Fuse Classifications 182
Fuse Reducers 166
Fuseology 171
GDB Series 137
GFP 122
HAZGARD™ 64
High-Speed Fuses 70
IDSR Series 16
In-Line Fuse Holders 148
JCASE Series 37
JLLN Series 24
JLLS Series 24
JLS Series 22
JTD/JTD_ID Series 21
KLC Series 81
KLDR Series 28
KLK Series 30
KLKD Series 30
KLKR Series 28
KLLU Series 9
KLNR Series 15
KLPC Series 8
KLQ Series 31
KLSR Series 15
L15S Series 85
L17T Series 50
Product Name Page Number
L25S Series 81
L50QS Series 75
L50S Series 81
L60030C, L60030M Series 107
L60030MPCB 103
L60S Series 81
L70QS Series 78
L70S Series 83
LCC Series 122
LCP Series 155
LD Series 130
LDC Series 10
LEB Series 148
LEC Series 148
LET Series 148
LEX Series 148
LEX YY Series 152
LEXT YY Series 152
LEY Series 148
LF Series Covers 111
LFC600 107
LFCL Series 67
LFFB003 123
LFG480, LFG600 Series 105
LFH250, LFH600 Series 94
LFJ 1000V Series 114
LFJ600 Series 91
LFNH 60
LFPSJ 118
LFPXV 113
LFR250, LFR600 Series 91
LFT300, LFT600 Series 100
LGR Series 66
LHFB 123
LHR Series 66
Live Parts 48
LLNRK Series 13
LLSRK/ LLSRK_ID Series 13
LMF Series 66
LPBC Series 130
LPFP 122
LPS 157
LPSC 117
LPSM 117
LPSM-QC 120
LPXV Series 112
LRU Series 166
LS Series 130
LSCR Series 127
LSCY 167
Littelfuse.com 284 © 2022 Littelfuse, Inc.
Technical Application Guide
Technical
11
Product Name Page Number
LSKA 167
LSOU 167
LSOW 167
LSOX 167
LSOY 167
LSOY-B 167
LSRU 167
LSRW 167
LSRX 167
LSRY 167
LSSU 167
LSSW 167
LSSX 167
LSSY 167
LSTY 167
LTFD Series 55
LVSP Series 163
MAXI Series 36
Medium Voltage 39
MEGA Series 65
MFP 122
Midget Fuses 30
MINI Series 36
MOV 161
MROplus 3
NLKP Series 20
NLN Series 20
NLS Series 20
OEM Products 69
Overvoltage Suppression 161
Plug Fuses 65
Potential Transformer 47
POWR-BLOKS™ 130
POWR-PRO® Fuses 3
Pre-Engineered Solutions 154
PSR Series 171
R-Rated Fuses 40
Semiconductor Fuses 70
SLC Series 26
Solar Fuses 56
SPF Series 62
SPFI Series 61
SPFJ Series 63
SPL001 110
Splicer Blocks 130
SPNH Series 60
SPXI Series 59
SPXV Series 58
Stud-Mounted Fuse Blocks 127
Suppression Products 160
Technical Information 170
Product Name Page Number
Telecom Fuses 49
TLN Series 51
TLO Series 65
TLS Series 52
TMOV 162
TOO Series 65
Varistors 162
WPB Series 149
ALPHANUMERIC INDEX
Kaunas
Amsterdam
Bellingham
Boston
Fort Collins
Essen
Saskatoon
Seoul Tokyo
Tsukuba
Suzhou
Wuxi
Beijing
Noida
Seongnam
Shanghai
Kunshan
Taipei
Chu-pei
Dongguan
Shenzhen
Hong Kong
Lipa City
Singapore
São Paulo
Taguig
Legnago
Bremen
Lampertheim
Deventer
Charneca de Caparica
Chippenham
San Sabastian
LeidenLauf
Ozegna
Burlington
Beverly
Troy
Muzquiz Matamoros
Piedras Negras
Eagle Pass
Manaus
Rapid City Lake Mills
Rock Falls Chicago
Mount Prospect
Champaign
Fremont
Aliso Viejo
Long Beach
Milpitas
Orange
Santa Clara
LOCALocal Resources for a L RESOURCES FOR A GLOBGLOBAL AL MARKETMarket
Protection Relays & Controls Catalog (PF130N)
The comprehensive line of electronic and microprocessorbased protection relays, timers, and flashers safeguard
equipment and personnel to prevent expensive damage,
downtime or injury due to electrical faults.
Solar Products Catalog (PF140N)
Littelfuse solar products are designed specifically for
photovoltaic applications where issues such as heat,
efficiency, longevity and global standards impact the choices
in selecting circuit protection.
Visit Technical Resources at Littelfuse.com
Technical information is only a click away. The Littelfuse Technical
Resources contains datasheets, product manuals, whitepapers,
application guides, demos, on-line design tools, and more.
An Extension of Your Team
Technical Hotline (+1 800-TEC-FUSE or +1 800-832-3873)
Littelfuse engineers are a phone call away to help identify potential issues and provide
product recommendations to resolve problems.
Application and Field Support
Our experienced product and application engineers work step-by-step with customers
from design to installation to determine the best solution.
© 2022 Littelfuse, Inc.
FORM PF101N
Rev: 4-A-042022
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for
their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.
North America
Littelfuse World Headquarters
8755 West Higgins Road, Suite 500
Chicago, IL 60631, USA
Littelfuse SymCom
1241 Concourse Drive
Rapid City, SD 57703, USA
Littelfuse Startco
140 – 15 Innovation Boulevard
(The Galleria Building)
Saskatoon, SK S7N 2X8, Canada
Tel: +1-306-373-5505
Technical Support:
Tel: +1-800-TEC-FUSE
E-mail: techline@littelfuse.com
Customer Service:
Tel: +1-800-227-0029
E-mail: PG_CSG@littelfuse.com
Asia
Littelfuse
Unit 1604B Desay Building,
Gaoxin Nanyi Ave.
Hi-Tech Industrial Park
Nashan District
Shenzen, 518057, China
+86 755 8207 0760
Europe
Littelfuse
Julius-Bamberger-Str. 8a
Bremen, D-28279, Germany
+49 421 82 87 3 147
Hartland Controls now part of Littelfuse
807 Antec Road
Rock Falls, IL 61071, USA
Tel: +1-815-626-5170
Littelfuse products are certified to many
standards around the world. To check
certifications on specific components, please
refer to the specific product datasheet on
Littelfuse.com.
Conocimientos aplicados | Respuestas entregadas
CATÁLOGO DE CONTROLADORES Y
RELEVADORES DE PROTECCIÓN
PROTECCIÓN DE BOMBAS Y MOTORES PROTECCIÓN CONTRA FALLAS DE CONEXIÓN A TIERRA PROTECCIÓN DE ALIMENTACIÓN
PROTECCIÓN CONTRA ARCO ELÉCTRICO RELEVADORES DE INTERCAMBIO Y CONTROL MONITOREO DE CONDUCTOR DE CONEXIÓN A TIERRA
MONITOREO DE NGR Y RESISTENCIA DE CONEXIÓN A TIERRA MONITORES DE SISTEMAS CA/SENSORES DE CARGA
CONTROLADORES DE BOMBA CONTROL DE TORRES E ILUMINACIÓN DE OBSTRUCCIÓN TEMPORIZADORES LUCES INTERMITENTES
Se agregaron más de 1000 piezas de Littelfuse
MotorSaver ®
, PumpSaver ®
y SSAC.
Nuevos relevadores de arco eléctrico
AF0500 con protección de zona y AF0100 con diseño compacto y de bajo costo
AF0500
Relevador de arco
eléctrico
AF0100
Relevador de arco
eléctrico
MP8000
Protección de motores
Aplicación para teléfonos
inteligentes
MP8000
Relevador de seguridad
para motores
Nuevo relevador de seguridad MP8000 para motores
inteligentes con funciones de Bluetooth ®
1
Sus preguntas serán resueltas, en cualquier momento.
Seleccione su método preferido para la selección de productos
entre los siguientes.
Por aplicación.........................................................................................................................Página 6
Por características .........................................................................................................Páginas 7-10
Preguntas comunes y por categoría de producto:
Guía de selección de productos.................................................................................Páginas 11-14
Por categoría de productos y número de pieza: Tabla de contenido .....................Páginas 2-5
Por palabra clave o número de parte: Índice alfanumérico .............................Páginas 517-520
CARACTERÍSTICA PGR-8800 AF0100 AF0500
Detección de corriente ✔
Sensores de puntos ✔ ✔ ✔
Sensores de fibra óptica ✔ - ✔
Protección contra arco eléctrico Páginas 14, 73
Serie ARP Página 157
Series ASQU/ASTU Página 270
Abrazaderas y sujetadores Página 486
APLICACIONES PROBLEMAS COMUNES CATEGORÍA DE PRODUCTOS DE PROTECCIÓN (N.º DE PÁGINA)
GENERADORES
- Ruptura del aislamiento debido a vibración y corrosión
- Las corrientes de falla de conexión a tierra a menudo superan la
corriente de cortocircuito
- Riesgos de arco eléctrico de generadores locales y en paralelo
Averías de conexión a tierra (pág. 43)
Conexión a tierra por resistencia (pág. 61)
Arco Eléctrico (pág. 73)
TRANSFORMADORES - Sobrecarga y sobrevoltaje Conexión a tierra por resistencia (pág. 61)
Alimentador (pág. 69)
Relevadores contra arco eléctrico
PROTECCIÓN DE MOTORES Y BOMBAS
PGR-6100 Relevador de aislamiento y detección de fallas de conexión a tierra en motores.............................94
7
PROTECCIÓN CONTRA ARCO ELÉCTRICO
DETECCIÓN DEL ARCO ELÉCTRICO
Detección rápida de un arco eléctrico para reducir daños al equipo y para el personal
Diseñado para utilizarse con Monitoreo del estado operativo de los sensores equipo original
SERIE AF0500
pág. 77
SERIE PGR-8800
pág. 75
D0920
pág. 74
Detección de sobrecorriente
SÍ NO
NO
Diseñado para utilizarse con
Monitoreo del estado operativo de los sensores equipo original
SÍ
Seleccione la
categoría del
producto
PASO 1
Seleccione las
características
aplicables en cada
categoría
PASO 2
Encuentre el producto
recomendado para su
aplicación
PASO 3
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols 2 ©2018 Controladores y Relevadores de Protección de Littelfuse
Controladores y relevadores de protección
ÍNDICE
PROTECCIÓN DEL ALIMENTADOR
Serie FPU-32 Unidad de protección de alimentación......................................70
Serie FPS Sistema de protección de alimentador .....................................71
PROTECCIÓN CONTRA ARCO ELÉCTRICO
D0920 Unidad de detección de arco eléctrico.................................74
Serie PGR-8800 Relevador de arco eléctrico..................................................75
Serie AF0500 Relevador de arco eléctrico..................................................77
Serie AF0100 Relevador de arco eléctrico..................................................79
Serie A0220 Sensor de luces....................................................................80
PGA-1100 Diodo lógico..........................................................................81
RELEVADORES Y CONTROLADORES
DE CAMBIO
Serie PHS Control de fase ..........................................................................84
Serie SIR Relevadores aislados de estado sólido ....................................86
Serie SLR Relevador de estado sólido - No aislado .................................88
TCR9C Controlador de temperatura .....................................................90
PROTECCIÓN DE MOTORES Y BOMBAS
Serie PGR-6100 Relevador de aislamiento y detección de fallas
de conexión a tierra en motores......................................94
PGR-6101-120 Relevador de aislamiento y detección de fallas
de conexión a tierra en motores......................................95
Serie MPU-32 Unidad de protección del motor......................................96
Serie MPS Sistema de protección del motor ....................................98
Serie MPU-32-X69X Kit de acondicionamiento del relevador
de seguridad para motores............................................100
Serie MPS-469X Kit de acondicionamiento del relevador
de seguridad para motores............................................100
111-Insider-P/
231-Insider-P Monitor para bombas monofásicas...............................101
232-Insider Monitor para bombas monofásicas...............................104
111P/233P /
Serie 233P-1.5 Monitor para bombas monofásicas...............................106
234-P Monitor para bombas monofásicas ..............................108
235P Monitor para bombas monofásicas...............................110
Serie MP8000 Bluetooth® Monitor de voltaje y corriente....................112
Serie 777 Monitor de voltaje y corriente trifásico.........................114
Serie 777/77C Monitor de voltaje y corriente monofásica...................118
Serie 777-KW/HP-P2 Monitor de voltaje y corriente trifásico.........................120
Serie 777-AccuPower Monitor de voltaje y corriente trifásico.........................123
Serie 77C-KW/HP Monitor de voltaje y corriente monofásica...................125
SIO-RTD-02-00 Monitor de entrada de temperatura..............................128
ENCUENTRE EL PRODUCTO
ADECUADO PARA SU APLICACIÓN
Aplicaciones típicas del producto ........................................................................6
Comparación de funciones de productos........................................................ 7-10
Guía de selección de productos.................................................................... 11-41
Índice alfanumérico................................................................................... 517-520
PROTECCIÓN DE FALLAS
DE CONEXIÓN A TIERRA
Sistemas de CA sin conexión a tierra
Serie EL3100 Indicador de voltaje de fase y fallas de conexión a tierra ...44
Serie PGR-3100 Sistema de indicación de fallas de conexión a tierra ..........45
Serie PGR-3200 Monitor de aislamiento ........................................................46
Sistemas de CC sin conexión a tierra
Serie SE-601 Monitor de fallas de conexión a tierra CC ...........................47
Sistema CA/CC conectado a tierra
Serie EL731 Relevador de alta sensidibilidad para falla a tierra CA/CC....48
Sistemas de conexión directa a tierra
Serie SE-701 Monitor de fallas de conexión a tierra.................................50
Serie SE-703 Monitor de falla a tierra .......................................................51
Serie SE-704 Monitor de falla a tierra .......................................................52
Interruptores de circuito de fallas en conexión a tierra
Serie SB6000 Bloqueo industrial contra choques eléctricos .....................53
Generador y protección de función única
Serie PGR-4300 Relevador de seguridad de fallas de conexión
a tierra en un generador.......................................................55
MONITOREO DE CONDUCTOR A TIERRA
Series SE-105/SE-107 Monitor de verificación y fallas en conexión
a tierra ........................................................................58
Serie SE-134C/SE-135 Monitor de verificación y detección de fallas de
conexión a tierra.........................................................59
RESISTENCIA DE CONEXIÓN A TIERRA /
MONITOREO DE NGR
Diagrama para dimensionar el resistor de conexión de neutro a tierra.............61
Serie SE-325 Monitor para resistor de conexión de neutro a tierra..........62
Series SE-330/
SE-330HV Monitor de resistor de neutro a tierra..................................63
Serie SE-330AU Monitor de resistor de neutro a tierra..................................65
Serie NGR Paquetes de resistencia del conexión de neutro .................66
Serie NGRM-ENC Monitor de resistor de neutro a tierra con carcasa.............67
1
2
3
6
7
5
4
©2018 Controladores y Relevadores de Protección de Littelfuse 3 www.littelfuse.com/relayscontrols
Controladores y relevadores de protección
Conocimientos aplicados | Respuestas entregadas
ÍNDICE
CONTROLADORES DE BOMBAS/
CONTROLADORES PARA NIVEL DE LÍQUIDOS
Serie ACBC-120 Controlador de alarma/Unidad de carga
de la batería..............................................................130
Serie PC-102 Interruptor de doble canal........................................132
PC-105 Controlador de bomba de 5 canales ........................133
Serie PC-XXX-LLC-CZ Relevador de control del nivel de líquidos...............134
Serie PC-XXX-LLC-GM Relevador de control del nivel de líquidos...............134
201-100-SLD Detector de falla en sellos de un solo canal............136
460-15-100-LLS Sensor de nivel de líquidos de un solo canal...........137
460-15-100-SLD Detector de falla en sellos de un solo canal............139
Serie LLC1 Control de nivel de líquidos de placa abierta ..........141
Serie LLC2 Control de nivel de líquidos de placa abierta ..........143
Serie LLC4 Control de nivel de líquidos de conector octal ........145
Serie LLC5 Control de nivel de líquidos......................................147
Serie LLC6 Control de nivel para límite bajo en líquidos ..........149
Serie LLC8 Control de nivel para límite bajo en líquidos ..........151
Relevadores alternativos
Serie ALT Relevadores alternativos de conexión rápida
de 8 Pines.................................................................153
ALT-XXX-1-SW /
Serie ALT-XXX-3-SW Relevadores alternativos..........................................155
Serie ARP Relevadores alternativos .........................................157
50R-400-ALT Relevadores alternativos .........................................159
Relevadores intrínsecamente seguros
ISS-100 Interruptor intrínsecamente seguro.........................................160
ISS-101 Interruptor intrínsecamente seguro.........................................161
Serie ISS-102 Interruptor intrínsecamente seguro de dos canales...............163
Serie ISS-105 Interruptor intrínsecamente seguro de cinco canales.............165
MONITORES DE SISTEMAS DE CA/
SENSORES DE CARGA
Transductores y relevadores de monitoreo de corriente
Serie CP5 Monitor de corriente monofásico.............................168
LSR-0 Sensor de carga, relevador de bajo costo ...............169
Serie LSR-XXX Sensores de carga....................................................170
Serie LSRU Sensores de carga....................................................171
Series LSRX/LSRX-C Sensores de carga, relevadores de bajo costo ........173
Series ECS Sensores de corriente .............................................175
Series ECSW Sensores de corriente .............................................178
Series TCS Sensores de corriente .............................................181
Serie TCSA Transductores de corriente ......................................183
Serie DCSA Transductores de corriente ......................................185
Serie LCS10T12/LPM Indicadores de corriente ..........................................187
Relevadores de monitoreo de voltaje
Serie 50R Monitor de voltaje monofásico ................................188
Serie 201-XXX-SP Monitor de fase/voltaje monofásico........................190
Serie 201-XXX-SP-DPDT Monitor de fase/voltaje monofásico........................192
Serie 202-200-SP Monitor de fase/voltaje monofásico........................194
Serie 460-XXX-SP Monitor de fase/voltaje monofásico........................196
Serie 102A Monitor de fase/voltaje trifásico .............................198
Serie 201A Monitor de fase/voltaje trifásico .............................200
Serie 201A-AU Monitor de fase/voltaje trifásico .............................202
Serie 201-XXX-DPDT Monitor de fase/voltaje trifásico .............................204
Serie 202 Monitor de fase/voltaje trifásico .............................206
Serie 250A Monitor de fase/voltaje trifásico .............................208
Serie 350 Monitor de fase/voltaje trifásico .............................210
Serie 355 Monitor de fase/voltaje trifásico .............................212
Serie 455 Monitor de fase/voltaje trifásico .............................214
Serie 460 Monitor de voltaje trifásico......................................216
Serie 601 Monitor de frecuencia y voltaje trifásico.................218
601-CS-D-P1 Monitor de potencia en sistema trifásico................220
Serie WVM ..................................................................................222
Serie DLMU ..................................................................................224
Serie HLMU ..................................................................................227
PLMU11 Monitor de voltaje....................................................229
Serie PLM Monitor de voltaje....................................................231
Serie TVW ..................................................................................233
Serie TVM ..................................................................................235
Serie PLR ..................................................................................237
Serie PLS ..................................................................................239
HLVA6I23 Monitor monofásico .................................................241
Serie KVM ..................................................................................243
MONITOREO E INDICACIÓN REMOTOS
Serie RM1000 Monitor remoto...................................................................246
Serie RM2000 Monitor remoto...................................................................248
Informer Herramienta de diagnóstico remoto...................................250
Informer-MS Herramienta de diagnóstico remoto...................................252
MÓDULOS DE COMUNICACIÓN
RS485MS-2W Módulo de comunicación ...................................................254
CIO-MB/
CIO-120-MB Módulo de comunicaciones................................................255
CIO-DN-P/
CIO-120-DN-P Interfaz Devicenet™ ...........................................................257
CIO-777-PR Interfaz Profibus..................................................................259
CIO-EN Interfaz Modbus-TCP y Modbus-RTU.................................260
COM 4-20 Módulo de salida para utilizar con el 777-AccuPower ......261
11
9
10
8 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols 4 ©2018 Controladores y Relevadores de Protección de Littelfuse
Controladores y relevadores de protección
ÍNDICE
RELEVADORES DE RETARDO DE TIEMPO
Guía de funcionamiento del temporizador........................................................264
Multifunción
Serie TRDU........................................................................................................265
Serie TRU ..........................................................................................................268
Serie ASQU/ASTU.............................................................................................270
Serie DSQU/DSTU.............................................................................................272
Dedicado
En retardo
Serie T10...........................................................................................................274
Retardo al encendido
Serie ERDM.......................................................................................................275
Serie HRDM ......................................................................................................277
Serie KRDM.......................................................................................................279
Serie KRPS ........................................................................................................281
Serie KSD1........................................................................................................284
Serie KSDU........................................................................................................286
Serie KSPS ........................................................................................................288
Serie MSM........................................................................................................291
Serie ORM.........................................................................................................293
Series TDM/TDMH/TDML................................................................................297
Series TDU/TDUH/TDUL...................................................................................299
Serie TH1...........................................................................................................301
THD1B410.5S....................................................................................................303
Series TMV8000/TSU2000 ...............................................................................305
Serie TRM .........................................................................................................307
Serie TS1...........................................................................................................309
Serie TSD1 ........................................................................................................311
Retardo de encendido, normalmente cerrado
TS441165 ..........................................................................................................313
Retardo de apagado
Serie HRDB........................................................................................................315
Series HRPS/HRIS.............................................................................................317
Serie KRDB........................................................................................................319
Serie KSDB........................................................................................................321
Serie ORB..........................................................................................................323
Series TDB/TDBH/TDBL....................................................................................325
Serie TDUB........................................................................................................327
Serie THDB........................................................................................................329
Serie TRB...........................................................................................................331
Serie TSB...........................................................................................................333
Serie TSDB........................................................................................................335
Un disparo
Serie HRDS........................................................................................................337
HSPZA22SL.......................................................................................................339
Serie KRDS........................................................................................................341
Serie KSDS........................................................................................................343
Serie ORS..........................................................................................................345
PRS65................................................................................................................347
Series TDS/TDSH/TDSL....................................................................................348
Serie TDUS........................................................................................................350
Series THC/THS ................................................................................................352
Serie THDS........................................................................................................354
Serie TRS...........................................................................................................356
Serie TSDS........................................................................................................358
Serie TSS...........................................................................................................360
Intervalo
Serie ERDI .........................................................................................................362
Serie HRDI.........................................................................................................364
Serie KRDI.........................................................................................................366
Serie KSD2........................................................................................................368
Serie KSPU........................................................................................................370
Series TDI/TDIH/TDIL........................................................................................372
Series TDUI/TDUIH/TDUIL................................................................................374
Serie THD2........................................................................................................376
Serie THD7........................................................................................................378
Series TS2/TS6 .................................................................................................380
Serie TSD2 ........................................................................................................382
Serie TSD6 ........................................................................................................384
Serie TSD7 ........................................................................................................386
Un disparo reiniciable
Serie KRD9........................................................................................................388
TSD94110SB .....................................................................................................390
Recircular
ERD3425A .........................................................................................................391
Serie ESDR........................................................................................................393
Serie HRDR........................................................................................................396
Serie KRD3........................................................................................................398
Serie KRDR........................................................................................................400
Serie KSD3........................................................................................................402
Serie KSDR........................................................................................................404
Serie KSPD........................................................................................................406
Serie RS.............................................................................................................408
Serie TDR ..........................................................................................................410
THD3C42A0.......................................................................................................412
TSD3411S..........................................................................................................414
Serie TSDR........................................................................................................416
12
©2018 Controladores y Relevadores de Protección de Littelfuse 5 www.littelfuse.com/relayscontrols
Controladores y relevadores de protección
Conocimientos aplicados | Respuestas entregadas
ÍNDICE
Porcentaje
PTHF4900DK......................................................................................................418
Función dual
Serie TDMB.......................................................................................................420
ESD52233..........................................................................................................422
Serie KRPD........................................................................................................424
HVAC
Serie CT.............................................................................................................426
T2D120A15M....................................................................................................428
Serie TA.............................................................................................................430
Serie TAC1.........................................................................................................432
Serie TL.............................................................................................................434
TSA141300........................................................................................................436
Dispensadora de monedas
Serie HRV..........................................................................................................437
CONTROLADORES DE LUCES
INTERMITENTES E ILUMINACIÓN
DE TORRES
Luces intermitentes
Serie FSU1000 ............................................................................................440
Serie FS100 Luz intermitente de corriente baja .....................................442
Serie FS100 Luz intermitente de potencia intermedia ...........................444
Serie FS20 ............................................................................................446
Serie FS300 ............................................................................................448
FS491 ............................................................................................450
Serie FS500 ............................................................................................451
Serie SC3/SC4 Controladores de secuencia ...............................................453
Controladores para iluminación de obstrucción y torres
Serie FA/FS ............................................................................................455
Serie FB Relevadores de alarma para faro incandescente y luces
intermitentes .....................................................................457
SCR490D Relevador de alarma para luces de obstrucción ...............458
Serie SCR Relevador de alarma para luces universales ....................459
FB9L Relevador de alarma para luces universales ....................461
SCR9L Relevador de alarma para luces universales ....................463
Serie PCR Control de fotografías.........................................................465
ACCESORIOS
Software ......................................................................................................468
Eléctricos ......................................................................................................469
Módulos de referencia de conexión a tierra, acopladores
de alta tensión y probadores de relevador.......................................................472
Indicación remota..............................................................................................473
Módulos y adaptadores de comunicación........................................................476
Adaptadores y terminaciones...........................................................................477
Control de nivel de líquidos..............................................................................478
Transformadores de corriente (CT)
Guía de selección de CT....................................................................................479
Transformadores de corriente...........................................................................480
Transformadores de medición e instrumentación ...........................................481
Gráfica de dimensionamiento de transformadores de corriente......................482
Carcasas y adaptadores de montaje
Adaptadores de montaje en panel....................................................................483
Adaptadores de montaje en superficie y en riel DIN........................................485
Abrazaderas y sujetadores a presión................................................................486
Carcasas y cubiertas herméticas......................................................................487
Conectores........................................................................................................488
DESCRIPCIÓN GENERAL SOBRE PROTECCIÓN
Glosario de términos.........................................................................................490
Introducción.......................................................................................................493
I. Introducción a los relevadores de seguridad .......................................493
II. Aplicaciones de los relevadores ..........................................................494
III. Aplicaciones de los CT ........................................................................502
IV. Conversión de resistencia de conexión a tierra .................................503
Números de dispositivo IEEE/ANSI y sufijos típicos........................................506
APÉNDICE
Planos dimensionales.......................................................................................507
ÍNDICE ALFANUMÉRICO
Índice alfanumérico...........................................................................................517
13
14
15
16
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols 6 ©2018 Controladores y Relevadores de Protección de Littelfuse
Controladores y relevadores de protección
APLICACIONES DE PRODUCTO TÍPICAS
APLICACIONES PROBLEMAS COMUNES CATEGORÍA DE PRODUCTOS DE PROTECCIÓN (N.º DE PÁGINA)
GENERADORES
- Ruptura del aislamiento debido a vibración y corrosión
- Las corrientes de falla de conexión a tierra a menudo superan la
corriente de cortocircuito
- Riesgos de arco eléctrico de generadores locales y en paralelo
Falla de conexión a tierra (pág. 43)
Conexión a tierra por resistencia (pág. 61)
Arco Eléctrico (pág. 73)
TRANSFORMADORES - Sobrecarga y sobrevoltaje Conexión a tierra por resistencia (pág. 61)
Alimentador (pág. 69)
MECANISMOS DE CONTROL
Y MCC
- Promedio de mayor tiempo inactivo (IEEE 493-1997)
- Riesgo de arco eléctrico para el personal de mantenimiento y que
trabaja con equipo con energía viva
- Una falla en una carga o alimentador activa toda la línea
Falla de conexión a tierra (pág. 43)
Conexión a tierra por resistencia (pág. 61)
Motor (pág. 93)
Alimentador (pág. 69)
Arco Eléctrico (pág. 73)
Control de bomba (pág. 129)
PANEL DE CONTROL Y
TABLEROS - Corriente de nivel bajo no detectada por OCPD típicos Falla de conexión a tierra (pág. 43)
CONTROLADORES
- Las frecuencias de cambio generan activaciones falsas
- Los controladores conectados a tierra por resistencia requieren protección
de fallas de conexión y alta sensibilidad para frecuencia amplia.
Falla de conexión a tierra (pág. 43)
Motor (pág. 93)
Arco Eléctrico (pág. 73)
MOTORES Y BOMBAS
- Fallas en el bobinado debido a sobrecargas, agua, polvo o vibración
- Daños en la bomba debido a ejecución en seco, sin succión, ciclos
rápidos, fallas en los sellos (bombas sumergibles), sobrecalentamiento,
entrada conectada, impulsor atorado o fallas de voltaje.
Falla de conexión a tierra (pág. 43)
Motor (pág. 93)
Monitoreo de voltaje (pág. 167)
Control de bomba (pág. 129)
CIRCUITOS DE ALIMENTACIÓN
- La tensión mecánica y la temperatura generan daños severos
- La protección de dispositivos electromecánicos antiguos es difícil de
mantener
- Los alimentadores no coordinados causan tiempos inactivos
innecesarios
Falla de conexión a tierra (pág. 43)
Alimentador (pág. 69)
EQUIPO PORTÁTIL
- El movimiento causa fallas en los conductores y deterioro del aislamiento
- Requerimiento para mantener a un nivel bajo el potencial de fallas de
conexión a tierra
- Pérdida de conexión a tierra o resistencia conectada a tierra debido a
conexiones dañadas
Falla de conexión a tierra (pág. 43)
Alimentador (pág. 69)
Arco Eléctrico (pág. 73)
Monitoreo de conductor de conexión a tierra (pág. 57)
Conexión a tierra de resistencia/monitoreo NGR (pág. 61)
CONEXIÓN A TIERRA
DE RESISTORES - Resistores de circuito abierto debido a corrosión y conexiones flojas Conexión a tierra por resistencia (pág. 61)
AGUA/AGUAS RESIDUALES
- Peligros de electrocución en el personal que trabaja en bombas
sumergibles o cerca de fuentes de agua y electricidad
- Daños en la bomba debido a ejecución en seco, sin succión, ciclos
rápidos, fallas en los sellos (bombas sumergibles), sobrecalentamiento,
entrada conectada, impulsor atorado o fallas de voltaje.
- Riesgo alto de arco eléctrico y exposición a vapor debido a la humedad
- Los conductores eléctricos pueden causar explosiones en atmósferas
con metano explosivo
- El H2S genera fallas prematuras en dispositivos electrónicos
Falla de conexión a tierra (pág. 43)
Motor (pág. 93)
Arco Eléctrico (pág. 73)
Control de bomba (pág. 129)
Retardo de tiempo (pág. 262)
Conexión a tierra por resistencia (pág. 61)
HVACR
- Los problemas de voltaje causan fallas prematuras
- Los ciclos cortos aumentan el desgaste y deterioro de los compresores
- Un contactor desgastado causa problemas de voltaje en motores
de compresores
- Ciclo rápido
- Condición de voltaje bajo/caída de voltaje
- Vibraciones en el contactor
- Fase inversa en un sistema trifásico
- Sobrecarga
Motor (pág. 93)
Retardo de tiempo (pág. 262)
©2018 Controladores y Relevadores de Protección de Littelfuse 7 www.littelfuse.com/relayscontrols
Controladores y relevadores de protección
Conocimientos aplicados | Respuestas entregadas
COMPARACIÓN DE CARACTERÍSTICAS
Utilice la tabla de características a continuación y la Guía de selección de productos en las páginas 11-41 y elija el relevador de seguridad o monitor adecuados para su aplicación.
CARACTERÍSTICA SE-601 EL731 PGR-3100 PGR-3200 SE-502
SE-701
SE-703
SE-704
SE-105
SE-107
SE-134C
SE-135 SE-325
SE-330
SE-330HV
SE-330AU
Detecta GF según el voltaje ✔ ✔ ✔ ✔ ✔
Detecta GF según la corriente ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Detecta el GF CC ✔ ✔
Captación de GF ajustable ✔ ✔ ✔ ✔ ✔ ✔ ✔
Retardo de tiempo ajustable ✔ ✔ ✔ ✔ ✔ ✔ ✔
Restablecimiento remoto ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Salida analógica ✔ ✔ ✔ ✔ ✔
Opción de control automático de
protección ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Filtro armónico ✔ ✔ ✔ ✔ ✔ ✔ ✔
Monitoreo de circuito CT ✔ ✔ ✔
Monitoreo de aislamiento ✔
Monitoreo de verificación de
conexión a tierra ✔ ✔
Monitoreo de resistor de conexión
a tierra ✔ ✔
PTC/RTD Sobretemperatura ✔
Comunicaciones ✔ ✔
Terminado general ‡ ✔ ✔ ‡ ‡ ‡ ✔ ✔ ✔ ✔
Relevadores de protección de conexión a tierra
Relevadores contra arco eléctrico
CARACTERÍSTICA PGR-8800 AF0100 AF0500
Detección de corriente ✔
Sensores de puntos ✔ ✔ ✔
Sensores de fibra óptica ✔ - ✔
Monitoreo por cable en entradas de sensor ✔ ✔ ✔
USB ✔ ✔ ✔
Alimentación eléctrica CC ✔ ✔ ✔
Alimentación eléctrica CA ✔ ✔ ✔
Registro de datos ✔ ✔
Multizona ✔
Comunicaciones ✔ ✔
NOTA: Las tablas se incluyen como referencia únicamente y describen configuraciones opcionales
y estándar. Para ver las especificaciones exactas de un producto, consulte la página del catálogo
correspondiente.
‡ Opcional
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols 8 ©2018 Controladores y Relevadores de Protección de Littelfuse
Controladores y relevadores de protección
COMPARACIÓN DE CARACTERÍSTICAS
Controladores de bombas
FUNCIONES MP8000 777-KW 77C-KW MPU-32 MPS
Voltaje de alimentación Monofásico o trifásico de
90–690 V CA
Trifásico
200-480 V CA*
Monofásico
100-240 V CA* 65-265 V CA, 80-275 V CC
Corriente monitoreada 0,5-1000 A
(>100 A con CT externos) 2-800 A (>90 A con CT externos)* Compatible con un amplio rango de CT externos
Clasificación HP Cualquiera 871 Cualquiera
Compatibilidad con tablero de control - - - - -
Sobrecarga ✔ ✔ ✔
Carga mínima/Pozo seco/Restricción de flujo ✔ ✔ ✔ ✔
Corriente mínima/Pozo seco/Restricción de flujo ✔ ✔ ✔
Sobrecorriente/Obstrucción ✔ ✔ ✔ ✔ ✔
Modo de sobrecorriente reducida ✔ ✔
Desbalance de corriente,
pérdida de fase/fase inversa ✔ ✔ ✔ ✔
Sobrevoltaje/bajo voltaje ✔ ✔ ✔ ✔
Desbalance de voltaje ✔ ✔ ✔
Falla de conexión a tierra Calculada Calculada Calculada ✔ ✔
Sobretemperatura ✔ ✔
Modelo térmico dinámico ✔ ✔
Sobrefrecuencia/Frecuencia baja ✔ ✔
Falla de aceleración/Velocidad baja ✔ ✔
Factor de alimentación ✔
Ciclo rápido/Avance lento ✔ ✔ ✔ ✔ ✔
Control de encendido ✔
Diferencial ✔ ✔
Clasificación nominal de contacto de salida 10 A a 240 V CA 10 A a 240 V CA* 8 A a 250 V CA
CT internos ✔ (hasta 100 A)* ✔ (hasta 90 A)*
Medición en unidad Pantalla de 3 dígitos Caracteres de 4 líneas x 20
Pantalla remota Vía teléfono inteligente ✔ ✔ ✔ ✔
Botón de restablecimiento remoto ✔ ✔ ✔ ✔
Registro de datos Últimas 1000 fallas Últimas fallas Últimas fallas 100 eventos 64 eventos
Comunicaciones locales RS-485 RS-485 RS-232 RS-485
Comunicaciones por Bluetooth® y aplicación
para teléfonos inteligentes** ✔ COMUNICACIONES POR RED (Opcional)
Modbus TCP ✔ ✔ ✔ ✔
Modbus RTU ✔ ✔ ✔ ✔ ✔
DeviceNet ✔ ✔ ✔
Profibus ✔ ✔
Ethernet/IP ✔ ✔ ✔
Allen-Bradley DF1 ✔
Salida analógica ✔ ✔
Entrada analógica (Prog.) ✔
Entrada digital (Prog.) ✔ ✔
Terminado general ✔ ✔
Temp. de funcionamiento en grados centígrados -40 a 70 -20 a 70 -20 a 70 -40 a 60 -40 a 60
Garantía 5 años 10 años
Certificaciones UL, CSA, CE Certificado UL, CSA, CE, RCM
*Existen otras versiones con diversos rangos de voltaje, rangos de monitoreo de corriente, clasificaciones nominales de contactos de salida y monitoreo de temperatura. Para obtener más información, consulte las hojas de datos
de series específicas.
** Aplicación de Littelfuse disponible para teléfonos inteligentes y tabletas iPhone® y Android™
©2018 Controladores y Relevadores de Protección de Littelfuse 9 www.littelfuse.com/relayscontrols
Controladores y relevadores de protección
Conocimientos aplicados | Respuestas entregadas
COMPARACIÓN DE CARACTERÍSTICAS
Controladores de bombas
FUNCIONES 111P 111-INSIDER-P,
231-INSIDER-P 232-INSIDER 233P 234-P 235P
Voltaje de alimentación Monofásico
115 V CA
Monofásico
115 V CA o 230 V CA
Monofásico
230 V CA
Monofásico
230 V CA
Monofásico
230 V CA
Monofásico
230 V CA
Corriente monitoreada - - - - - -
Clasificación HP 1/3 – 1 HP 1/3 – 1/2 HP o
1/3 – 1 HP 1/3 – 1 HP 1/3 – 1,5 HP o
1/3 – 3 HP 1/3 – 3 HP 5 – 15 HP
(se requiere de CT externo)
Compatibilidad con tablero de control -
Franklin™, Pentek®,
CentriPro™,
Flint & Walling™, Grundfos®
(modelos fabricados a partir de del
segundo semestre de 2014)
Grundfos®
(modelos fabricados antes
de mediados de 2014)
- Grundfos® -
Sobrecarga
Carga mínima/Pozo seco/Restricción de flujo ✔ ✔ ✔ ✔ ✔ ✔
Corriente mínima/Pozo seco/Restricción de flujo
Sobrecorriente/Obstrucción ✔ ✔ ✔ ✔ ✔ ✔
Modo de sobrecorriente reducida
Desbalance de corriente,
pérdida de fase/fase inversa
Sobrevoltaje/bajo voltaje ✔ ✔ ✔ ✔ ✔ ✔
Desbalance de voltaje
Falla de conexión a tierra
Sobretemperatura
Modelo térmico dinámico
Sobrefrecuencia/Frecuencia baja
Falla de aceleración/Velocidad baja
Factor de alimentación
Ciclo rápido/Avance lento ✔ ✔ ✔ ✔ ✔ ✔
Control de encendido
Diferencial
Clasificación nominal de contacto de salida
CT internos
Medición en unidad
Pantalla remota Capacidad de pantalla remota al utilizar el Informer por IR
Botón de restablecimiento remoto
Registro de datos Capacidad de pantalla remota al utilizar el Informer por IR
Comunicaciones locales
Comunicaciones por Bluetooth® y aplicación para
teléfonos inteligentes** COMUNICACIONES POR RED (Opcional)
Modbus TCP
Modbus RTU
DeviceNet
Profibus
Ethernet/IP
Allen-Bradley DF1
Salida analógica
Entrada analógica (Prog.)
Entrada digital (Prog.)
Terminado general
Temp. de funcionamiento en grados centígrados -40 a 60 -40 a 60 -40 a 60 -40 a 60 -40 a 60 -40 a 60
Garantía 5 años
Certificaciones cULus cURus cCSAus, cURus cULus cULus
*Existen otras versiones con diversos rangos de voltaje, rangos de monitoreo de corriente, clasificaciones nominales de contactos de salida y monitoreo de temperatura. Para obtener más información, consulte las hojas de datos
de series específicas.
** Aplicación de Littelfuse disponible para teléfonos inteligentes y tabletas iPhone® y Android™
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols 10 ©2018 Controladores y Relevadores de Protección de Littelfuse
Controladores y relevadores de protección
COMPARACIÓN DE CARACTERÍSTICAS
Relevadores de seguridad para motores y alimentadores
FUNCIÓN/CARACTERÍSTICA (IEEE#) MP8000 777 77C MPU-32 MPS FPU-32 FPS
Voltaje de alimentación
Monofásico o
trifásico de
90–690 V CA
Trifásico
200-480 V CA*
Monofásico de
100-240 V CA* 65-265 V CA, 80-275 V CC
Corriente monitoreada 0,5-1000 A (>100 A
con CT externos) 2-800 A (>90 A con CT externos)* Compatible con un amplio rango de CT externos
Sobrecarga (49, 51) ✔ ✔ ✔ ✔ ✔
Carga baja ✔ ✔
Sobrecorriente (50, 51)/Obstrucción ✔ ✔ ✔ ✔ ✔ ✔ ✔
Modo de sobrecorriente reducida ✔ ✔ ✔ ✔
Corriente baja (37) ✔ ✔ ✔ ✔ ✔
Desbalance de corriente,
pérdida de fase/fase inversa (37) ✔ ✔ ✔ ✔ ✔ ✔
Sobrevoltaje (59)/Bajo voltaje (27) ✔ ✔ ✔ ✔ ✔
Desbalance de voltaje (47) ✔ ✔ ✔ ✔
Averías de conexión a tierra (50G/N, 51G/N) Calculada Calculada Calculada ✔ ✔ ✔ ✔
Sobretemperatura (49) * ✔ ✔ ✔ ✔
Modelo térmico dinámico ✔ ✔ ✔ ✔
Sobrefrecuencia/Frecuencia baja (81) ✔ ✔ ✔ ✔
Falla de aceleración/Velocidad baja ✔ ✔
Factor de alimentación (5) ✔ ✔
Ciclo rápido/Avance lento ✔ ✔ ✔ ✔ ✔
Control de encendido ✔
Control de interruptores automáticos ✔
Diferencial (87) ✔ ✔
Protección del alimentador ✔ ✔
Sobrecorriente a plazo definido ✔ ✔
Sobrecorriente a plazo progresivo ✔
Clasificación nominal de contacto de salida 10 A a 240 V CA 10 A a 240 V CA* 8 A a 250 V CA
CT internos ✔ (hasta 100 A) ✔ (hasta 90 A)*
Medición en unidad Pantalla de 3 dígitos Caracteres de 4 líneas x 20
Pantalla remota Vía teléfono
inteligente ✔ ✔ ✔ ✔ ✔ ✔
Botón de restablecimiento remoto ✔ ✔ ✔ ✔ ✔ ✔
Registro de datos Últimas 1000 fallas Últimas fallas Últimas fallas 100 eventos 64 eventos 100 eventos 64 eventos
Comunicaciones locales RS-485 RS-485 RS-232 RS-485 RS-232 RS-485
Comunicaciones por Bluetooth® y aplicación
para teléfonos inteligentes** ✔ COMUNICACIONES POR RED (Opcional)
Modbus TCP ✔ ✔ ✔ ✔ ✔ ✔
Modbus RTU ✔ ✔ ✔ ✔ ✔ ✔ ✔
DeviceNet ✔ ✔ ✔ ✔ ✔
Profibus ✔ ✔ ✔
Ethernet/IP ✔ ✔ ✔ ✔ ✔
Allen-Bradley DF1 ✔ ✔
Salida analógica ✔ ✔ ✔ ✔
Entrada analógica (Prog.) ✔ ✔
Entrada digital (Prog.) ✔ ✔ ✔ ✔
Terminado general ✔ ✔ ✔ ✔
Temp. de funcionamiento en grados
centígrados -40 a +70 -20 a +70 -20 a +70 -40 a +60 -40 a +60 -40 a +60 -40 a +60
Garantía 5 años 5 años 5 años 10 años 10 años 10 años 10 años
Certificaciones UL, CSA, CE Certificado UL, CSA, CE, RCM
*Existen otras versiones con diversos rangos de voltaje, rangos de monitoreo de corriente, clasificaciones nominales de contactos de salida y monitoreo de temperatura. Para obtener más información, consulte las hojas de datos
de series específicas.
** Aplicación de Littelfuse disponible para teléfonos inteligentes y tabletas iPhone® y Android™
NOTA: Los números de dispositivos IEEE se muestran en paréntesis seguido de las características aplicables.
©2018 Controladores y Relevadores de Protección de Littelfuse 11 www.littelfuse.com/relayscontrols
Guía de selección de productos
Conocimientos aplicados | Respuestas entregadas
GUÍA DE SELECCIÓN DE PRODUCTOS
Protección de conexión a tierra ........................................................... 12
Monitoreo de conductor a tierra.......................................................... 13
Monitoreo de NGR/Conexión a tierra de resistencia.......................... 13
Protección del alimentador.................................................................. 14
Protección contra arco eléctrico .......................................................... 14
Controladores y relevadores alternativos ........................................... 15
Protección de motores y bombas......................................................... 16
Controladores de bombas.................................................................... 18
Monitores de sistemas de CA / Sensores de carga............................ 22
Temporizadores.................................................................................... 26
Control de luces intermitentes, iluminación de obstrucción y torres..... 39
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
12
PROTECCIÓN DE CONEXIÓN A TIERRA
SERIE
EL3100
pág. 44
PGR‑3100
pág. 45
SERIE
SE-704
pág. 52
SERIE
SE-601
pág. 47
SERIE
PGR‑3200
pág. 46
SERIE
PGR‑4300
pág. 55
SERIE
SE-701
pág. 50
SERIE
SE-703
pág. 51
SB6100
pág. 53
Tipo de
conectores
Identificación de
fallas de conexión
a tierra y reducción
de sobrevoltaje
transitorio
Tipo de
conectores
Detección y
restricción de
fallas de conexión
a tierra Tipo de conectores Conexión a tierra de
resistencia
Contacto de salida
Sólidamente conectado
a tierra
NO
Relevadores de protección de conexión a tierra
CC CA
NO
NO
NO
SÍ
3 clases
Lógica de control
Detección de falla en el
aislamiento
3 clases
Lógica de control
Reducción del potencial
para arco eléctrico
3 clases
Lógica de control Protección personal
3 clases
Lógica de control Detección de fallas de
conexión a tierra por
medición de voltaje de fase
CA
SÍ NO
NO
Medición digital y comunicaciones Tipo de conectores
Tipo de conectores Detección de fallas de conexión
a tierra de CA/CC
SÍ
SÍ
Conversión
Sistema de con‑
exión a tierra por
resistencia
Conversión
Sistema de con‑
exión a tierra por
resistencia
GENERADOR AS 2081:2011
RANGO AMPLIO 10 mA-5 A
SERIE
EL731
pág. 48
Tipo de
conectores Detección de
corrientes de nivel
bajo con fallas de
conexión a tierra
CC + MFV
CC - 6 kHz
SÍ
SÍ
CONECTADO A TIERRA
Detección de fallas de conexión a tierra
en un sistema conectado a tierra
NO
SIN CONEXIÓN A TIERRA
Detección de fallas de conexión a tierra en un
sistema no conectado a tierra
SÍ
Guía de selección de productos
13
MONITOREO DE NGR/CONEXIÓN A
TIERRA DE RESISTENCIA
SERIE
SE-330
pág. 63
SERIES SE-330 Y
SE-701
(utilizar en conjunto)
pág. 63 pág. 50
SERIE
SE-325
pág. 62
SERIE
NGR
pág. 66
CONEXIÓN A TIERRA DE RESISTENCIA DE CA
Resuelva los problemas comúnmente asociados con sistemas sin
conexión a tierra y sistemas con conexión directa a tierra y monitoree la
conexión de neutro a tierra
Tipo de conectores Monitoreo de
continuidad de
resistencia de conexión
a tierra de neutro (NGR)
Impulsos, filtrado digital, Tipo de conectores
comunicaciones o software
Sistemas de conexión a tierra de resistencia y monitores de NGR
Tipo de conectores
Implemente la conexión
a tierra por resistencia
3 clases
Lógica de control Identifique el alimentador defectuoso
SÍ
SÍ
NO
NO
MONITOREO DE
CONDUCTOR A TIERRA
SERIES SE-105 Y
SE-107
pág. 58
SERIES SE-134C
Y SE-135
pág. 59
Relevadores de monitoreo de conductor a tierra
3 clases
Lógica de control Voltaje de cable
<5 kV >5 kV
VERIFICACIÓN DE LA CONEXIÓN A
TIERRA Y FALLAS EN LA CONEXIÓN
Asegúrese de que existe una continuidad del
conductor de conexión a tierra para el equipo portátil
y las bombas sumergibles, e identifique las fallas en la
conexión a tierra.
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
14
PROTECCIÓN DEL ALIMENTADOR
SERIE
FPU‑32
pág. 70
SERIE
FPS
pág. 70
AVANZADO
Monitoreo del voltaje y
la corriente a través de
un sistema modular con
funciones de protección
integrada, control de
interruptores, medición y
registro de datos.
ESTÁNDAR
Protección de los
alimentadores de
distribución en instalaciones
de tratamiento de aguas
residuales, productos
químicos, petróleo,
procesamiento y fabricación.
Relevadores de protección en la alimentación
Tipo de conectores
Protección de corriente y
medición de sobrecorriente
bajo directriz IEEE/IEC
Tipo de conectores Protección de corriente,
protección de voltaje y
medición de sobrecorriente
bajo directriz IEEE/IEC
SERIE
AF0500
pág. 77
SERIE
PGR‑8800
pág. 75
D0920
pág. 74
SERIE
AF0100
pág. 79
Relevadores contra arco eléctrico
PROTECCIÓN CONTRA
ARCO ELÉCTRICO
Detección de sobrecorriente
SÍ NO
NO
SÍ NO
Diseñado para utilizarse con
Monitoreo del estado operativo de los sensores equipo original
SÍ
DETECCIÓN DEL ARCO ELÉCTRICO
Detección rápida de arcos eléctricos para reducir
daños en los equipos y riesgos en el personal
Zonas múltiples, comunicaciones,
y registro de datos
Guía de selección de productos
15
Relevadores de cambio de estado sólido Relevadores de cambio
para control de fase
CONTROLADORES Y RELEVADORES ALTERNATIVOS
CONTROL DE FASE
Diseñado para cambiar
la intensidad de la luz, la
variación de la velocidad de
ventilación, o controlar la
temperatura de un calentador
CONTROL DE TEMPERATURA
Controlador de punto de ajuste único
con corriente alta, salida en estado
sólido para cargas resistivas
RELEVADORES
DE ESTADO SÓLIDO
Diseñados para aplicaciones
industriales que requieren operaciones
fiables y resistentes
SERIE
SIR2
pág. 86
SERIE
SLR
pág. 88
SERIE
SIR1
pág. 86
SERIE
PHS
pág. 84
Alimentación eléctrica Conmutación de
voltaje cero para
cargas resistivas e
incandescentes
Diseñado para utilizarse con
equipo original Cambio aleatorio para
cargas inductivas
Cambio aleatorio para
cargas inductivas
SÍ
SÍ
NO
NO
Diseñado para utilizarse con
equipo original
Aislamiento óptico entre la entrada de control
de voltaje y la salida de estado sólido
TCR9C
pág. 90
Relevadores de control
de temperatura
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
16
SERIE
PGR‑6100
pág. 94
111P
pág. 106
SERIE
SIO-RTD-02-00
pág. 128
PROTECCIÓN COMPLEMENTARIA (MOTOR)
Protección de motores contra la degradación del
aislamiento, sobrecalentamiento o fallas de ventilación
BÁSICA (BOMBA)
Protección de bombas monofásicas contra obstrucciones (pozo
seco), restricciones de flujo o válvula cerrada, impulsor atascado,
ciclo rápido y alto/bajo voltaje
Alimentación
eléctrica Protección
de fallas de
conexión
a tierra y
monitoreo del
aislamiento
Monitoreo de
la temperatura
con detectores
de temperatura
por resistencia
(DTR)
Herramienta
de diagnóstico
manual
útil para la
resolución de
problemas
PROTECCIÓN DE MOTORES Y BOMBAS
Alimentación eléctrica Opciones de montaje
Alimentación eléctrica Voltaje Alimentación eléctrica Voltaje
Protección de motores y bombas de nivel básico
SERIE 233P
pág. 106
235P
pág. 110
111INSIDER-P
pág. 101
231INSIDER-P
pág. 101
232INSIDER
pág. 104
234-P
pág. 108
INFORMER
pág. 250, 475
MONTAJE EN SUPERFICIE TABLERO ABIERTO
115 V
<3 HP
230 V 115 V
1/3-1 HP 1/3-3 HP
GRUNDFOS®
>5 HP
230 V
Tipo de
conectores HP
Tipo de
conectores
Tipo de tablero
de control
Tipo de conectores HP
FRANKLIN™,
PENTEK®,
CENTRIPRO™
PARA TODAS
LAS UNIDADES
MONOFÁSICAS
BÁSICAS EN
ESTA PÁGINA
Guía de selección de productos
17
SERIE
77C
pág. 118
SERIE
777-KW/
HP-P2
pág. 120
SERIE
MPU-32
pág. 96
SERIE
777-P2
pág. 114
SERIE
MP8000
pág. 112
SERIE
77C-KW/HP
pág. 125
PROTECCIÓN DE MOTORES Y BOMBAS
ESTÁNDAR CON BLUETOOTH®
Protección multifunción para bombas y motores
de voltaje medio y bajo, trifásicos y monofásicos
con datos en tiempo real, programación
y resolución de problemas a través de
aplicaciones para iPhone® o Android™.
ESTÁNDAR
Protección multifunción para motores de voltaje medio y bajo
Tipo de
conectores Trifásico
Tipo de
conectores Monofásico
Alimentación eléctrica Protección contra baja tensión para aplicaciones con bombas Protección contra baja tensión Alimentación eléctrica
para aplicaciones con bombas
Tipo de conectores Protección de temperatura y
sobrecorriente reducida
Tipo de conectores Potencia de salida de
4-20 mA
NO SÍ NO
NO
SÍ
SÍ SÍ NO
Protección estándar de bombas y motores Protección estándar de bombas
y motores con Bluetooth®
777-ACCUPOWER
Y COM 4-20
(utilizar en conjunto)
pág. 123 pág. 261
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
18
CANAL ÚNICO CANAL DUAL
SÍ NO CONECTOR DE 8 PINES
CARRIL DIN
Opciones de montaje
3 clases
Lógica de control
Fugas en los sellos y
sobrecalentamiento
Fugas en
sello dual
CONTROLADORES DE BOMBAS
201-100-SLD
pág. 136
PC-102CICILT
pág. 132
PC-102CICIDL
pág. 132
460-15100-SLD
pág. 139
Detectores de fugas en sellos
Diseñado para utilizarse con
equipo original Funcionalidades del controlador
SERIE
MPU-32-X69X
pág. 100
SERIE
MPS-469X
pág. 100
SERIE MPS
pág. 98
PROTECCIÓN DE MOTORES Y BOMBAS
RETROADAPTACIONES
Unidad cableada de reemplazo
de conexión y funcionamiento
para relevadores viejos y de
otras marcas
AVANZADO
Protección integral del voltaje
y control de activación para bombas y
motores de voltaje medio
DETECTORES DE FUGAS EN SELLOS
Detectan fugas en los sellos y sobrecalentamiento
del motor en bombas sumergibles
Protección avanzada de bombas
y motores
Acondicionamiento
Guía de selección de productos
19
SERIE
PC-XXX- LLC-GM
pág. 134
SERIE
LLC6
pág. 149
SERIE
LLC4
pág. 145
SERIE
LLC5
pág. 147
SERIE
LLC2
pág. 143
SERIE
PC-XXX- LLC-CZ
pág. 134
460-15- 100-LLS
pág. 137
SERIE
LLC1
pág. 141
SERIE
LLC8
pág. 151
CONTROLES DEL NIVEL DE LÍQUIDO
Control de operaciones de bombeo de líquidos para bombeo y succión
NO
Alimentación eléctrica
Estilos de terminales
Alimentación
Compatibilidad eléctrica Alimentación eléctrica Estilos de terminales
CONTROLADORES DE BOMBAS
Alimentación eléctrica
Opciones de montaje
SÍ
CONTROL DEL NIVEL DE
LÍQUIDO PARA SERIE 16M
DE GEM
CONTROL DEL NIVEL DE
LÍQUIDO SERIE PNR Y PNRU
DE CROUZET
Límite de protección
de nivel bajo de
líquido, que cumple
con certificación
UL 353
Límite de
protección de nivel
bajo de líquido,
que cumple con
certificación UL 353
CONECTOR DE 8 PINES
CONECTOR DE 8 PINES CONECTOR DE 11 PINES
MONTAJE EN RIEL
DIN/SUPERFICIE
TABLERO ABIERTO
POR SONDA
TERMINAL INDIVIDUAL TERMINAL DOBLE
TERMINAL DOBLE
TERMINAL INDIVIDUAL
Controladores de nivel de líquido
Alimentación eléctrica
Tipo de detección
PC-105
pág. 133
FLOTANTE
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
20
INDIVIDUAL
SÍ
SÍ SÍ SÍ
SÍ SÍ SÍ
SÍ SÍ
NO NO NO
NO
NO NO
NO
NO NO
11 PINES, DPDT 11 PINES, DPDT
Alimentación eléctrica
Configuración del interruptor flotante
Selector de modo
3 clases
Lógica de control Selector de modo
3 clases
Lógica de control Selector de modo
Tipo de
conectores
Contactos
nominales en
600 V CA
SERIE
ARPX1S
pág. 157
SERIE
ARPX2S
pág. 157
SERIE
ARPX3S
pág. 157
ARP41
pág. 157
ARP43
pág. 157
SERIE
ALT-XXX3-SW
pág. 155
50R-400ALT
pág. 159
SERIE
ALT-XXXS-SW
pág. 133
SERIE
ALT-XXX-S
pág. 133
SERIE
ALT-XXXX-SW
pág. 133
SERIE
ALT-XXX1-SW
pág. 155
SERIE
ALT-XXX-X
pág. 133
DUAL
Relevadores de cambio
Tipo de
conectores Retardo
antioscilación
Tipo de
conectores Retardo
antioscilación
Retardo
antioscilación
Tipo de conectores Retardo antioscilación Tipo de conectores Retardo antioscilación
Tipo de
8 pines, SPDT conectores
Tipo de
8 pines, SPDT conectores
RELEVADORES DE CAMBIO
Se utilizan en aplicaciones de bombeo doble para equilibrar el tiempo de ejecución de ambas bombas
CONTROLADORES DE BOMBAS
DUAL MÁS FLOTANTE
DE PARO
SÍ SÍ
Guía de selección de productos
21
ACBC-120- SD
pág. 130
ACBC-120
pág. 130
ISS-100
pág. 160
ISS-105- ISO
pág. 165
ISS-105- ISO-4
pág. 165
ISS-105- ISO-3
pág. 165
ISS-105
pág. 165
SERIE
ISS-102
pág. 163
ISS-101
pág. 161
Alimentación eléctrica Opciones de montaje
Alimentación eléctrica Número de canales
CANAL ÚNICO DOS CANALES TRES CANALES CUATRO
CANALES
CINCO
CANALES
CONECTOR DE 8 PINES
MONTAJE EN RIEL
DIN/SUPERFICIE
Relevadores intrínsecamente seguros Controlador de bombas
intrínsecamente seguro
CONTROLES DE ALARMA/
CARGADORES DE BATERÍAS
Control de alarma de doble propósito/
cargador de baterías para paneles
de control de bombas
RELEVADORES
INTRÍNSECAMENTE SEGUROS
Se utilizan para interactuar entre áreas
peligrosas y no peligrosas
CONTROLADOR DE BOMBAS
INTRÍNSECAMENTE SEGURO
Programable para controlar/ecualizar el
tiempo de ejecución de 2, 3, o 4 bombas,
con la capacidad de interactuar entre
áreas peligrosas y no peligrosas
Control de alarma/
Cargador de baterías
CONTROLADORES DE BOMBAS
Alimentación eléctrica Conector de 12 pines incluido
SÍ NO
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
22
202-RP
pág. 206
SERIE
201A-AU
pág. 202
PLMU11
pág. 229
SERIE
201A
pág. 200
SERIE
460
pág. 216
SERIE
PLM
pág. 231
SERIE
PLS
pág. 239
SERIE
PLR
pág. 237
SERIE
DLMU
pág. 224
MONTAJE EN SUPERFICIE
MONTAJE EN RIEL DIN/SUPERFICIE
MONITORES DE VOLTAJE (1 de 2)
Mediciones de voltaje altamente precisas y exactas para brindar mayor sensibilidad
mientras se reducen las interrupciones no deseadas
SÍ NO
Alimentación eléctrica
Opciones de montaje
Diseñado para utilizarse en Fase inversa únicamente
Diseñado para utilizarse con
equipo original Porcentaje de desbalance
en voltaje ajustable
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
Alimentación eléctrica Trifásico
SERIE
201-XXXDPDT
pág. 204
CONECTOR DE 11 PINES
Relevador de monitoreo de voltaje
SÍ
Alimentación eléctrica Protección contra voltaje no balanceado
NO
NO
Diseñado para utilizarse con
equipo original Fase inversa únicamente
SÍ
RANGO DE 2 %-8 %
RANGO DE 2 %-10 %
CONECTOR DE 8 PINES
NO
Diseñado para utilizarse con
equipo original Retardo de disparo ajustable y
desbalance ajustable
SÍ
Tipo de
conectores Protección
contra fallas
en contactor
con/sin
herramienta
de diagnóstico
manual
SERIE 455 E
INFORMER-MS
(utilizar en conjunto)
pág. 214 / pág. 252, 475
SÍ
SÍ NO
Guía de selección de productos
23
SERIE
250A
pág. 208
SERIE
601
pág. 218
SERIE
HLMU
pág. 227
SERIE
WVM
pág. 222
SERIE
350
pág. 210
202
pág. 206
SERIE
TVM
pág. 235
SERIE
355
pág. 212
SERIE
102A
pág. 198
SERIE
TVW
pág. 233
SÍ
SÍ
SÍ NO NO
NO
MONITORES DE VOLTAJE (1 de 2)
(Continuación de página anterior)
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
Relevador de monitoreo de voltaje
SÍ
SÍ
NO NO
NO
BORNES DE TORNILLO
FORMA C
Tipo de conectores
Contactos de salida
Alimentación eléctrica Retardos de disparo
ajustable
Alimentación eléctrica Rango de voltaje
ajustable
Alimentación eléctrica NO Nominal 600 V
Porcentaje de
desbalance ajustable
Monitoreo de la
frecuencia
2 CONTACTOS FORMA C
Diseñado para utilizarse con
Memoria defectuosa equipo original Universal 190-480 V CA
CONTACTOS FAST-ONS
FORMA C
SÍ
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
24
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
SERIE
201-XXXSP-DPDT
pág. 192
SERIE
201XXX-SP
pág. 190
SERIE
50R
pág. 188
HLVA6I23
pág. 241
202-200SP
pág. 194
SERIE
KVM
pág. 243
SERIE
460XXX-SP
pág. 196
MONITORES DE VOLTAJE (2 de 2)
(Continuación de página anterior)
SÍ
SÍ
SÍ
SÍ SÍ
NO
NO NO
NO
SÍ NO
Diseñado para utilizarse con
equipo original Terminales de tornillo
Diseñado para utilizarse con
equipo original
Retardo de restablecimiento
ajustable
Salida de relevador
de potencia
2 contactos Forma C aislados Tipo de conectores
Alimentación eléctrica Monofásico
MONTAJE EN SUPERFICIE CONECTOR DE 8 PINES
Relevador de monitoreo de voltaje
MONTAJE EN RIEL DIN/
SUPERFICIE
MONITORES DE CORRIENTE/SENSORES DE
CARGA (1 de 2)
Controladores multipropósito utilizados para protección de
bombas y motores y para proporcionar alimentación de circuito
cerrado en un sistema, como relevadore de prueba para indicar
que una carga está energizada, entre otras funciones...
Alimentación eléctrica Unidad autónoma
LSRX
pág. 173
LSR-0
pág. 169
SERIE
LSRX-C
pág. 173
Alimentación eléctrica Opciones de montaje Alimentación eléctrica Salida del relevador
SÍ SÍ NO
NO
SPDT Forma C
Bloque de terminal no
conectable
SÍ NO
SPST FORMA A
CONEXIONES
RÁPIDAS DE
6,35 MM (0,25")
Monitoreo de corriente/Relevadores
de detección de cargas
Guía de selección de productos
25
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
SERIE
DCSA
pág. 185
SERIES
LCS10T12 Y LPM
(Requiere de unidad LPM)
pág. 187
SERIE
TCSA
pág. 183
SERIE
TCS
pág. 181
TOROIDE INTEGRADO
SENSOR DE CORRIENTE
REMOTO
Tipo de conectores Transductor de corriente CA
(salida de 4-20 mA)
SERIE
ECSW
pág. 178
SERIE
ECS
pág. 175
SERIE
CP5
pág. 168
SÍ
SÍ
NO NO
Diseñado para utilizarse con
equipo original Disparo de retardo ajustable Bloque de terminales
de tornillo
Bornes de tornillo
CONTROL DE VOLTAJE
SÍ
SÍ NO
MONITORES DE CORRIENTE/SENSORES DE CARGA
(2 de 2)
(Continuación de página anterior)
SÍ
SÍ
Diseñado para utilizarse con
Enlace accionado equipo original
Tipo de conectores Punto de disparo individual
SERIE
LSRU
pág. 171
SERIE
LSR-XXX
pág. 170
NO
Salida de estado sólido
de 1 Amp
SÍ NO
NO
NO
CONEXIONES
RÁPIDAS DE
6,35 MM (0,25")
INDICADOR LED
DE CORRIENTE
Monitoreo de corriente/Relevadores de detección de cargas
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
26
TEMPORIZADORES
HRPSD12HI
pág. 317
SERIE
HRIS
pág. 317
SERIE
KRPD
pág. 424
SERIE
KRPS
pág. 281
SERIE
KSPD
pág. 406
SERIE
KSPS
pág. 288
HSPZA22SL
pág. 339
SERIE
KSPU
pág. 370
PROGRAMABLE DESDE FÁBRICA
El microprocesador de circuitos brinda una excelente precisión y estabilidad
1 de 12 FUNCIONES
DUALES
1 de 12 FUNCIONES
INDIVIDUALES
Salida del relevador de alta potencia Alimentación eléctrica Alimentación eléctrica Salida de estado sólido
Diseñado para utilizarse con
equipo original Función dual
SÍ Alimentación eléctrica Salida del relevador
SÍ
SÍ
NO
NO
NO
Temporizadores programables desde fábrica
Alimentación eléctrica
Función individual
Alimentación eléctrica
Función individual Ajuste de interruptor Alimentación eléctrica DIP
Ajuste de interruptor Alimentación eléctrica DIP
Tipo de conectores Contactos aislados Alimentación eléctrica Función dual
SÍ NO SÍ NO
SÍ
SÍ
NO
NO
Guía de selección de productos
27
TEMPORIZADORES
SERIE
TRDU
pág. 265
SERIE
TRU
pág. 268
SERIE
DSQU
pág. 272
SERIE
DSTU
pág. 272
SERIE
ASTU
pág. 270
SERIE
ASQU
pág. 270
MULTIFUNCIÓN
Relevadores de sincronización universales y completamente programables
CONEXIONES
RÁPIDAS
CONEXIONES
RÁPIDAS
BLOQUES DE
TERMINAL
BLOQUES DE
TERMINAL
PERILLA INTEGRADA INTERRUPTOR DIP
Funciones de sincronización Alimentación eléctrica
disponibles Salida de estado sólido Alimentación eléctrica
Alimentación eléctrica Estilo de terminación Alimentación eléctrica Estilo de terminación
Diseñado para utilizarse con
equipo original Ajustes de sincronización
Alimentación eléctrica Salida del relevador SÍ NO
Temporizadores multifunción
6
21
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
28
SERIE
HRDM
pág. 277
SERIE
TRM
pág. 307
T10
pág. 274
SERIE
KRDM
pág. 279
SERIE
ERDM
pág. 275
SERIE
TDML
pág. 297
SERIE
PRLM
pág. 295
SERIE
ORM
pág. 293
SERIE
MSM
pág. 291
SERIE
TDMH
pág. 297
SERIE
TDM
pág. 297
ESPECIFICADO — FUNCIÓN INDIVIDUAL
Amplia oferta de productos para cumplir los requisitos de la industria y de los fabricantes de piezas originales
Alimentación eléctrica Tipo de contacto
Contactos de 480/600 V Alimentación eléctrica
Alimentación eléctrica Rangos de sincronización
Alimentación eléctrica Estilo del empaque
1-1023 s en
incrementos
de 1 s
0,1-102,3 s en
incrementos
de 0,1 s
Temporizadores de retardo de encendido
RETARDO AL ENCENDIDO
Tipo de conectores Salida del relevador
CONECTOR DE 8 U
11 PINES
Alimentación eléctrica Aislado
SÍ
Alimentación eléctrica Ajuste de interruptor DIP
SÍ NO
SPDT
DPDT
CONECTOR DE 8 PINES
Relevador
con DPDT
o SPDT
aislado
Relevador
de DPDT
aislado
MONTAJE EN PC/
CABLE TRENZADO
PARA REEMPLAZAR
TEMPORIZADORES
BIMETÁLICOS
ABRIR TARJETA DE PC
SÍ NO
SÍ NO
TEMPORIZADORES
10-10 230 s en
incrementos
de 10 s
NO
MONTAJE EN SUPERFICIE
Guía de selección de productos
29
SERIE
TH1
pág. 301
THD1B410.5S
pág. 303
TMV8000
pág. 305
SERIE
TDU
pág. 299
SERIE
KSDU
pág. 286
SERIE
KSD1
pág. 284
SERIE
TSD1
pág. 311
TSU2000
pág. 305
SERIE
TS1
pág. 309
TS441165
pág. 313
ESPECIFICADO — FUNCIÓN INDIVIDUAL
(Continuación de página anterior)
Alimentación eléctrica Corriente baja (1 A)
Normalmente cerrado Tipo de conectores
Temporizadores de retardo de encendido
SÍ
SÍ
Alimentación eléctrica Estado sólido con contactos normalmente abiertos
Corriente alta (6, 10, o 20 A) Alimentación eléctrica
NO
NO
INTERRUPTOR DIP
Rangos de sincronización Alimentación eléctrica
Alimentación eléctrica Estilo de ajuste
FIJO/EXTERNO PERILLA
INTEGRADA
FIJO/PERILLA
INTEGRADA/EXTERNO
0,1 segundo a
600 min en 4 rangos
0,1 segundo a
1000 min en 6 rangos
0,1 segundo a
1000 min en 6 rangos
0,1 segundo a 100 h
en 7 rangos
FIJOS
EXTERNO
TEMPORIZADORES
Alimentación eléctrica Rangos de sincronización
FIJOS
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
30
SERIE
ORB
pág. 323
SERIE
KRDB
pág. 319
SERIE
HRDB
pág. 315
SERIE
TDBL
pág. 325
SERIE
TRB
pág. 331
SERIE
TDBH
pág. 325
SERIE
TDB
pág. 325
ESPECIFICADO — FUNCIÓN INDIVIDUAL
Amplia oferta de productos para cumplir los requisitos de la industria y de los FABRICANTES DE PIEZAS ORIGINALES
Rangos de sincronización Alimentación eléctrica
Alimentación eléctrica Rangos de sincronización
Alimentación eléctrica Estilo del empaque
Temporizadores de retardo de conexión
RETARDO A LA CONEXIÓN
Tipo de conectores Salida del relevador
CONECTOR DE 8 U
11 PINES
Alimentación
eléctrica Aislado
Alimentación
eléctrica Aislado
SÍ
Ajuste de interruptor DIP Alimentación eléctrica
SÍ NO
Alimentación eléctrica
Estado sólido
con contactos
normalmente abiertos
NO
SPDT/DPDT
SPDT
0,1 s a 1000 min en
6 rangos
0,1 s a 100 min en
5 rangos
TEMPORIZADORES
1-1023 s
en incrementos
de 1 s
0,1-102,3 s
en incrementos
de 0,1 s
10-10 230 s
en incrementos
de 10 s
ABRIR TARJETA
DE PC
MONTAJE EN
SUPERFICIE
Guía de selección de productos
31
SÍ NO
SERIE
THDB
pág. 329
SERIE
THD7
pág. 378
SERIE
TSB
pág. 333
SERIE
TSDB
pág. 335
SERIE
TSD7
pág. 386
SERIE
KSDB
pág. 321
SERIE
TDUB
pág. 327
ESPECIFICADO — FUNCIÓN INDIVIDUAL
(Continuación de página anterior)
INTERRUPTOR
DIP
Alimentación eléctrica Estilo de ajuste Alimentación eléctrica Estilo de ajuste
Alimentación eléctrica Corriente baja (1 A)
Temporizadores de retardo de conexión
Rango de temperatura para funcionamiento extendido Alimentación eléctrica
Alimentación eléctrica Corriente alta
(6, 10, o 20 A) NO
SÍ
FIJO/EXTERNO
1 s a 1000 min en
5 rangos
Rangos de sincronización Alimentación eléctrica
FIJO/PERILLA
INTEGRADA/EXTERNO
FIJO/PERILLA
INTEGRADA/EXTERNO
TEMPORIZADORES
0,1 segundo a
1000 min en 6 rangos
0,05 s a 600 s en
4 rangos
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
32
TSD94110SB
pág. 390
SERIE
KRDS
pág. 341
SERIE
ORS
pág. 345
SERIE
ERDI
pág. 362
SERIE
KRD9
pág. 388
SERIE
TDSL
pág. 348
SERIE
TRS
pág. 356
PRS65
pág. 347
SERIE
TDSH
pág. 348
SERIE
HRDS
pág. 337
SERIE
TDS
pág. 348
ESPECIFICADO — FUNCIÓN INDIVIDUAL
Amplia oferta de productos para cumplir los requisitos de la industria y de los fabricantes de piezas originales
Alimentación
eléctrica
Rangos de
sincronización
Alimentación eléctrica Rangos de sincronización
Alimentación eléctrica Estilo del empaque
Temporizadores de un solo accionamiento
UN SOLO ACCIONAMIENTO
Tipo de conectores Accionamiento
múltiple
CONECTOR DE 8 U
11 PINES
Alimentación
Salida del relevador eléctrica
SÍ
SÍ
0,1 s a 1000 min
en 6 rangos
Alimentación eléctrica Aislado
Alimentación eléctrica Ajuste de interruptor DIP
SÍ
SÍ
NO
Alimentación
eléctrica Salida del relevador
NO
SÍ
NO NO
NO
TEMPORIZADORES
1-1023 s
en incrementos
de 1 s
0,1-102,3 s
en incrementos
de 0,1 s
10-10 230 s
en incrementos
de 10 s
DPDT SPDT
SÍ
Alimentación
eléctrica Aislado
ABRIR TARJETA
DE PC
MONTAJE EN
SUPERFICIE
Alimentación eléctrica Fijo/Perilla/Ajuste externo
NO
Alimentación
eléctrica Ajuste por perilla
solamente
Guía de selección de productos
33
SERIE
THDS
pág. 354
THC421C
pág. 352
SERIE
TSDS
pág. 358
SERIE
THS
pág. 352
SERIE
KSDS
pág. 343
SERIE
TSS
pág. 360
SERIE
TDUS
pág. 350
ESPECIFICADO — FUNCIÓN INDIVIDUAL
(Continuación de página anterior)
INTERRUPTOR DIP
Rangos de sincronización Alimentación eléctrica
Alimentación
eléctrica
Rangos de
sincronización
Alimentación eléctrica Corriente baja (1 A) Alimentación eléctrica Estilo de ajuste
Aplicaciones para expendedoras de monedas Alimentación eléctrica
Temporizadores de un solo accionamiento
FIJO/PERILLA
INTEGRADA/EXTERNO
0,05 s a 600 s
en 4 rangos
0,1 segundo a
1000 min
en 6 rangos
0,1 segundo a
1000 min en 6 rangos
0,1 segundo a 600 s
en 4 rangos
SÍ
SÍ NO
Alimentación eléctrica Estado sólido con contactos
normalmente abiertos
Alimentación eléctrica Rango de temperatura
para funcionamiento
extendido
Alimentación eléctrica Rango de temperatura
para funcionamiento
extendido
Alimentación eléctrica Corriente alta (6, 10, o 20 A)
NO
SÍ NO
TEMPORIZADORES
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
34
SERIE
THD7
pág. 378
SERIE
HRDI
pág. 364
SERIE
KRDI
pág. 366
SERIE
THD2
pág. 376
SERIE
TDIL
pág. 372
SERIE
ERDI
pág. 362
SERIE
TDIH
pág. 372
SERIE
TDI
pág. 372
ESPECIFICADO — FUNCIÓN INDIVIDUAL
Amplia oferta de productos para cumplir los requisitos de la industria y de los fabricantes de piezas originales
Rangos de sincronización Alimentación eléctrica
Alimentación eléctrica Estilo del empaque
1-1023 s en
incrementos de 1 s
0,1-102,3 s en
incrementos de 0,1 s
10-10 230 s en
incrementos de 10 s
Temporizadores de intervalo
INTERVALO
Tipo de conectores Salida del relevador
CONECTOR DE 8 PINES
MONTAJE EN SUPERFICIE
Alimentación eléctrica Aislado
SÍ
SÍ
NO SÍ
NO
Alimentación eléctrica Salida de estado sólido
Alimentación eléctrica Corriente alta
(6, 10, o 20 A)
0,1 s a 1000 min en
6 rangos
1 s a 1000 min en
5 rangos
TEMPORIZADORES
Rangos de sincronización Alimentación eléctrica
NO
DPDT SPDT
Guía de selección de productos
35
SERIE
TDUI
pág. 374
SERIE
TS2
pág. 380
SERIE
TSD2
pág. 382
SERIE
TS6
pág. 380
SERIE
TSD6
pág. 384
SERIE
KSD2
pág. 368
SERIE
TSD7
pág. 386
ESPECIFICADO — FUNCIÓN INDIVIDUAL
(Continuación de página anterior)
INTERRUPTOR DIP FIJO/EXTERNO
Alimentación eléctrica Alimentación eléctrica Corriente baja (1 A) Estilo de ajuste
Rangos de sincronización Alimentación eléctrica
CC
Temporizadores de intervalo
FIJO/PERILLA
INTEGRADA/EXTERNO
1 s a 1000 min
en 5 rangos
0,05 s-600 s en
4 rangos
CA
Alimentación eléctrica Voltaje de entrada
0,1 s a 1000 min en
6 rangos
CA
Alimentación eléctrica Voltaje de entrada
CC
TEMPORIZADORES
0,1 segundo a 100 h
en 7 rangos
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
36
NO
SERIE
KSD3
pág. 402
THD3C42A0
pág. 412
TSD3411S
pág. 414
SERIE
TDR
pág. 410
ERD3425A
pág. 391
SERIE
HRDR
pág. 396
SERIE
KRD3
pág. 398
SERIE
KRDR
pág. 400
ESPECIFICADO — FUNCIÓN INDIVIDUAL
Amplia oferta de productos para cumplir los requisitos de la industria y de los fabricantes de piezas originales
Alimentación
Salida del relevador eléctrica
Alimentación eléctrica Aislado
Alimentación eléctrica Tipo de contactos Rangos de sincronización Alimentación eléctrica
Alimentación
eléctrica
Luces intermitentes
de ciclo continuo
Alimentación eléctrica Corriente baja (1 A)
Alimentación eléctrica Rango de temperatura para
funcionamiento extendido
Corriente alta (6, 10, o 20 A) Alimentación eléctrica
Alimentación eléctrica Estado sólido con contactos
normalmente abiertos
Alimentación
eléctrica Estilo del empaque
SÍ
SÍ
SÍ
0,1 s a 1000 min
en 6 rangos
FIJOS
0,1 segundo a 1000 min
en 6 rangos
Temporizadores de ciclo continuo
CICLO CONTINUO
CONECTOR DE 8 PINES
NO
NO SÍ
SPDT DPDT
Alimentación eléctrica Estilo de ajuste
FIJO/PERILLA
INTEGRADA/EXTERNO
FIJO/PERILLA INTEGRADA
TEMPORIZADORES
NO
MONTAJE EN SUPERFICIE
SÍ NO
Guía de selección de productos
37
SERIE
RS
pág. 408
SERIE
TSDR
pág. 416
PTHF4900DK
pág. 418
SERIE
ESDR
pág. 393
SERIE
KSDR
pág. 404
ESPECIFICADO — FUNCIÓN INDIVIDUAL
(Continuación de página anterior)
PERILLA/EXTERNO/FIJO
EXTERNO
INTERRUPTOR DIP
Alimentación eléctrica Estilo de ajuste
Alimentación eléctrica Voltaje de entrada
CA
CA/CC
PORCENTAJE
Temporizadores de ciclo continuo Temporizadores por porcentaje
TEMPORIZADORES
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
38
SERIE
T2D120A15M
pág. 428
SERIE
TDMB
pág. 420
SERIE
TA
pág. 430
SERIE
ESD52233
pág. 422
SERIE
CT
pág. 426
SERIE
HRV
pág. 437
SERIE
TAC1
pág. 432
SERIE
TL
pág. 434
ESPECIFICADO
Amplia oferta de productos para cumplir los requisitos de la industria y de los fabricantes de piezas originales
Alimentación
eléctrica
Retardo en
ventilación
Alimentación eléctrica Protección contra pérdida de
intensidad por voltaje bajo
Alimentación eléctrica SÍ Retardo por bloqueo
SÍ
SÍ
NO
NO NO
NO
Temporizadores específicos - HVAC
FUNCIÓN DUAL HVAC EXPENDEDORA DE
MONEDAS
Tipo de conectores Ciclo anticortocircuitos con
encendido aleatorio Tipo de conectores Ciclo anticortocircuitos
con encendido aleatorio
Temporizadores específicos -
Función dual
Temporizadores específicos -
Expendedoras de monedas
TEMPORIZADORES
TSA141300
pág. 436
SÍ
RETARDO DE
ENCENDIDO/
INTERVALO
RETARDO DE
ENCENDIDO/
RETARDO DE APAGADO
Guía de selección de productos
39
FS126
FS127
FS146
pág. 442
FS143
FS152
FS162
pág. 444
FS224
pág. 446
SERIE
SC3/SC4
pág. 453
SERIE
FSU1000
pág. 440
SERIE
FS500
pág. 451
FS219-45
pág. 446
FS491
pág. 450
FS324
pág. 448
FS312
pág. 448
24, 120, o 230 V CA 24 V CC
24 V CC
24 o 120 V CA
AMPERAJE BAJO
12 V CC
12 V CC
45-150
(PERSONALIZADO)
75 (FIJO)
10-180
(PERSONALIZADO)
90 (FIJO) 45-150
(PERSONALIZADO)
75 (FIJO)
NO
Rastreador de 3 o 4 canales diseñado para circuitos de Alimentación eléctrica
iluminación secuencial para cargas en luces incandescentes
Diseñado para utilizarse con
Destellos por minutos (FPM) equipo original
Alimentación eléctrica Estado sólido sin
piezas móviles SÍ
SÍ
NO
10-100 INTEGRADO Y
AJUSTABLE
Tipo de
conectores Pequeña
falla para
LED ajustable
o cargas
resistivas
Tipo de conectores Alta protección para
ruidos en la línea y
transitorios eléctricos
para aplicaciones
automotrices
60-150
(PERSONALIZADO)
75 (FIJO)
Luces intermitentes
LUCES INTERMITENTES
Diseñadas para potenciar lámparas y luces LED que se encienden y apagan reiteradamente
CONTROL DE LUCES INTERMITENTES, ILUMINACIÓN DE OBSTRUCCIÓN Y TORRES
Para control de cargas resistivas, inductivas e incandescentes Tipo de conectores
Alimentación eléctrica Amperaje medio
24-240 V CA;
1, 6, 10 o 20 AMP
CONECTOR DE 8 PINES
Seleccione la categoría del producto PASO 1 Seleccione las características aplicables en cada categoría PASO 2 Encuentre el producto recomendado para su aplicación PASO 3
40
CONTROL DE LUCES INTERMITENTES, ILUMINACIÓN DE OBSTRUCCIÓN Y TORRES
SERIE
FB
pág. 457
SCR9L
pág. 463
SCR490D
pág. 458
SERIE
SCR
pág. 459
FB9L
pág. 461
Alimentación eléctrica Tipo de conectores Diseñadas para detectar fallas en diversos tipos de luces Se utilizan para
monitorear de forma
remota marcadores
incandescentes que
fallan constantemente y
luces de obstrucción
Tipo de conectores Se utilizan para
monitorear el
funcionamiento de un
faro incandescente de
dos lámparas y faros
intermitentes
LUCES INTERMITENTES Y
BALIZAS INCANDESCENTES
FAROS/LUCES LATERALES
FIJAS
FAROS CON ILUMINACIÓN
LED INTERMITENTE
FAROS CON ILUMINACIÓN
LED FIJAS/INTERMITENTE
LUCES DE OBSTRUCCIÓN
FAROS O
LUCES DE OBSTRUCCIÓN LUCES UNIVERSALES
RELEVADORES DE ALARMAS
Monitorean cualquier falla en luces intermitentes y faros incandescentes, luces de obstrucción y universales
Relevadores de alarmas
Guía de selección de productos
41
CONTROL DE LUCES INTERMITENTES, ILUMINACIÓN DE OBSTRUCCIÓN Y TORRES
SERIE
PCR
pág. 465
SERIE
FS
pág. 455
SERIE
FA
pág. 455
CONTROL DE FOTOGRAFÍAS
Diseñadas para cumplir los requisitos más estrictos
de control de iluminación de obstrucción y en
torres. Están calibradas desde fábrica para cumplir
las especificaciones de FAA y FCC
LUCES INTERMITENTES
(DESACTIVADAS) MÓDULOS AUXILIARES
Luces intermitentes y faros de torre Control de fotografías
LUCES INTERMITENTES Y FAROS DE TORRE
Diseñadas para utilizarse en torres de comunicación, chimeneas,
torres de enfriamiento, edificios de gran altura, puentes y torres de
redes eléctricas
www.littelfuse.com/relayscontrols 42 ©2018 Controladores y Relevadores de Protección de Littelfuse
Controladores y Relevadores de protección
Conocimientos aplicados | Respuestas entregadas
43
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
1
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols
PROTECCIÓN DE FALLA A TIERRA
Cree ambientes de trabajo más seguros y reduzca los incidentes debido a arcos
eléctricos sin afectar el tiempo de funcionamiento de las operaciones críticas.
Vitales en los entornos de fabricación y procesamiento, los relevadores sensibles
para protección de falla a tierra detectarán la ruptura de la resistencia en el
aislamiento sin disparos perjudiciales. La ruptura de la resistencia en el aislamiento
puede ocasionarse por humedad, vibración, químicos y polvo.
Sistemas CA sin conexión a tierra
Serie EL3100 Indicador de voltaje entre fases y fallas
de conexión a tierra............................................................44
Serie PGR-3100 Sistema de indicador de fallas de conexión a tierra ........45
Serie PGR-3200 Monitor de aislamiento .....................................................46
Sistema CC sin conexión a tierra
Serie SE-601 Monitor de fallas de conexión a tierra CC.........................47
Sistema CA/CC conectado a tierra
Serie EL731 Relevador de falla a tierra de alta sensibilidad CA/CC ....48
Sistemas sólidamente puestos a tierra
Serie SE-701 Monitor de fallas de conexión a tierra ..............................50
Serie SE-703 Monitor de falla a tierra ...................................................51
Serie SE-704 Monitor de falla a tierra ...................................................52
Interruptores de circuitos con fallas de conexión a tierra -
Protección de personal
Serie SB6000 Bloqueo industrial de choques eléctricos .........................53
Generador y función individual
Serie PGR-4300 Relevador de seguridad de fallas de conexión
a tierra para un generador ................................................55
Para obtener más información…
y para descargar nuestras notas
técnicas y documentación sobre
protección de fallas de conexión a tierra
con VFD, visite
Littelfuse.com/TechnicalCenter
44
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
1
www.littelfuse.com/EL3100
Protección de fallas de conexión a tierra - Sistemas CA sin conexión a tierra
SERIE EL3100
Indicador de voltaje de fases y fallas
de conexión a tierra
Descripción
El EL3100 es un sistema de indicación de voltaje de fases y fallas de
conexión a tierra que consta de sistemas trifásicos. El EL3100 cumple
con los requisitos del Código Eléctrico Nacional (NEC) y el Código
Eléctrico Canadiense (CEC) para detectores de conexión a tierra en
sistemas de corriente alterna sin conexión a tierra. Las conexiones de
voltaje se implementan en el EL3100 para sistemas de 208, 240, 480,
y 600-V. El EL3100 consta de tres luces LED de color verde que indican
la presencia de voltaje fase a tierra y un LED de color rojo que indica
una falla en la conexión. El EL3100 puede operar de forma autónoma
o mediante cinco indicadores LED remotos. Una salida del relevador
de estado sólido brinda información sobre fallas en la conexión. El
relevador de salida se cierra cuando el voltaje neutro trifásico varía
como consecuencia de una falla a tierra.
Especificaciones
Voltaje de entrada Entrada B: DTP: 208/240 V CA
Entrada A: 480/600 V CA
Dimensiones H 87 mm (3,43"); A 112,5 mm (4,43")
P 56 mm (2,2")
Aprobaciones Certificado con CSA, certificación UL (E340889),
RCM (Australia)
Terminado general Característica estándar
Garantía 5 años
Montaje DIN, Superficie
NÚMERO DE PEDIDO MONTAJE
EL3100-00 DIN, superficie
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Conforme con código CEC
y NEC®
Cumple el Código Eléctrico Nacional (NEC®) Artículo 250.21 y el
Código Eléctrico Canadiense, Parte 1, Sección 10-106 (2) que definen
los requisitos para sistemas sin conexión a tierra.
LED de control remoto para
voltaje bajo El voltaje del sistema no se indica en la ubicación del LED remoto
Indicación de voltaje de
fase
Indica la presencia de voltaje tanto en sistemas conectados a tierra
como en sistemas sin conexión a tierra
Relevador de salida Permite indicaciones remotas sobre fallas de conexión a tierra
Características y beneficios
(Indicador de voltaje
de fase y fallas
de conexión
a tierra)
EL3100
LED
remotos
AH
G
AL BH BL CH CL
DN
DR
DG
DA
DB
DC
Relevador
de salida
A
B
C
Nota: X=R para LED rojo y V para LED verde
Y=0 sin etiqueta y 1 para etiqueta con fallas de conexión a tierra
LED remotos
Luces LED IP67 de 16 mm de alta densidad
disponibles en colores rojo y verde.
Accesorios
A
A
ACCESORIOS REQUISITOS
RK-310X-0Y Opcional
Littelfuse se reserva el derecho de realizar cambios de producto sin previo aviso. El material en este documento es exacto tal como se comprobó en el momento de su publicación. Visite Littelfuse.com para
obtener información actualizada.
45
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
1
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pgr-3100
Protección de fallas de conexión a tierra - Sistemas CA sin conexión a tierra
Descripción
El PGR-3100 indica la presencia de voltaje en cada fase de un sistema
trifásico. Los LED en el panel se iluminan cuando hay presencia de
voltaje. Al ocurrir una falla de conexión, se reduce el voltaje en la fase
que presenta fallas para establecer conexión a tierra, lo que ocasiona
que los LED en la fase con fallas se atenúen y los LED para las fases
con funcionamiento normal generen mayor intensidad de luz. El Código
Eléctrico Nacional (NEC®) Artículo 250.21(B) y el Código Eléctrico
Canadiense, Parte 1, Sección 10-106 (2) establecen que los sistemas
CA sin conexión a tierra deben tener detectores de conexión a tierra,
tales como el PGR-3100, instalados en el sistema. Se puede utilizar
transformadores potenciales (PT) externos para reducir el voltaje del
sistema, que permite que el PGR-3100 sea implementado a cualquier
voltaje del sistema. Los PT no son necesarios para voltajes de sistema
superiores a 600 V CA.
Especificaciones
Voltaje de entrada Hasta de 600 V CA 50/60 Hz
Indicador de cierre del paso
de voltaje < 30 V CA de línea para conexión a tierra
Dimensiones H 88,9 mm (3,5"); A 108 mm (4,3");
P 54 mm (2,1")
Botón de prueba Local
Aprobaciones certificado por CSA, certificado de UL
Terminado general Característica estándar
Garantía 5 años
Montaje Panel
NÚMERO DE PEDIDO MONTAJE
PGR-3100 Montaje en panel
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Conformidad con los
códigos NEC® y CEC
Cumple el Código Eléctrico Nacional (NEC®) Artículo 250.21(B) y el
Código Eléctrico Canadiense, Parte 1, Sección 10-106 (2) que definen los
requisitos para sistemas sin conexión a tierra.
LED para fases Indican la presencia de una falla de conexión a tierra y la fase que
presenta fallas, además del voltaje fase a tierra en la unidad energizada.
LED redundantes LED redundantes de larga duración (dos por fase) para
mayor exactitud
Botón de prueba de luces Verifica que los LED funcionen
Características y beneficios A
PGR-3100
ALIMENTACIÓN
NO CONECTADA
A TIERRA
B
C
A
L2
PGR-3200
L1
B
C
(Sistema indicador
de fallas de conexión
a tierra)
(Monitor de aislamiento)
Littelfuse se reserva el derecho de realizar cambios de producto sin previo aviso. El material en este documento es exacto tal como se comprobó en el momento de su publicación. Visite Littelfuse.com para
obtener información actualizada.
PGR-3100-PNL
Carcasa montada en panel
PGR-3100-PNL es la unidad PGR-3100
integrada en una carcasa de acero inoxidable
compacta para una fácil instalación y
acondicionamiento. Entre las opciones
está una alarma visual, una alarma audible
con función de silencio y reinicio. Las
dimensiones son 8"E x 8"A x 4" P.
ACCESORIOS
NÚMERO
DE PEDIDO OPCIONES ALIMENTACIÓN
ELÉCTRICA CARCASA INDICACIÓN
PGR-3100-PNL - A B - C D
0 = Sin opciones,
prueba de luces de
120 V realizada por
el cliente
1 = Transformador
incluido para
prueba de luces de
120 V
0 = Voltaje bajo
(120, 208, 240), con
o sin fusión
1 = Voltaje alto
(480, 600), con o
sin fusión
0 = Carcasa
NEMA 4
1 = 316
Acero inoxidable
Opciones
futuras
Accesorios
SERIE PGR-3100
Sistema de indicación de fallas de conexión a tierra
46
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
1
www.littelfuse.com/pgr-3200
Protección de fallas de conexión a tierra - Sistema CA sin conexión a tierra
A
L2
PGR-3200
L1
B
C
(Monitor de aislamiento)
Descripción
El PGR-3200 detecta fallas de conexión a tierra monitoreando
constantemente la integridad del aislamiento de los sistemas eléctricos
sin conexión a tierra. El relevador monitorea el aislamiento para
identificar daños y proporciona mantenimiento preventivo y resolución
de problemas ante fallas de conexión a tierra existentes por medio de
dos advertencias y un nivel de alarma. El PGR-3200 opera en sistemas
sin conexión a tierra monofásicos o trifásicos de hasta 6 kV.
El PGR-3200 también puede utilizarse en sistemas conectados a tierra
para monitorear daños en el aislamiento, mientras la red eléctrica está
desactivada. Los terminales (27-28) del modo de funcionamiento están
conectados a los interruptores automáticos o contactos auxiliares para
desactivar el relevador cuando el contactor o los interruptores estén
cerrados.
Especificaciones
Números de dispositivos IEEE Relevador para baja tensión (27)
Relevador detector de conexión a tierra (64)
Voltaje de entrada Ver información para pedir
Dimensiones H 75 mm (3"); A 100 mm (3,9"); P 115 mm (4,5")
Clasificaciones de resistencia Advertencia de aislamiento eléctrico (30 kΩ y 50 kΩ)
Alarma de aislamiento eléctrico (10 kΩ)
Modo de funcionamiento
del contacto Sin control automático de protección
Botón de prueba Local
Botón de reconfiguración Local y remoto
Contactos de salida Dos Forma C
Salida analógica 0-1 mA
Terminado general Consultar en fábrica
Aprobaciones Certificado por UL (E183688)
Garantía 5 años
Montaje DIN, Superficie
NÚMERO DE PEDIDO CONTROL DE ALIMENTACIÓN
PGR-3200 240 V CA(1)
PGR-3200-120 120 V CA
Información para pedir
Diagrama de circuitos simplificado
Nota: Para un óptimo terminado general comuníquese con la fábrica. Para convertir a
un sistema conectado a tierra por resistencia, consulte los materiales de resistores de
neutro a tierra.
(1) UL no disponible
Acoplador de alta tensión serie PGH
Para sistemas entre 1300 V y 6000 V, es necesario
instalar un acoplador de alta tensión serie PGH.
Ohmímetro analógico PGA-0510
Ohmetro analógico PGA-0510 opcional permite la
medición de la resistencia de aislamiento eléctrico.
CARACTERÍSTICAS BENEFICIOS
Conformidad con los
códigos NEC® y CEC
Cumple el Código Eléctrico Nacional (NEC®) Artículo 250.21(B) y el Código
Eléctrico Canadiense, Parte 1, Sección 10-106 (2) que definen los requisitos
para sistemas sin conexión a tierra.
Contacto de salida
(50 kΩ)
Contacto de salida Forma C para alarmar cuando la resistencia de
aislamiento eléctrico es inferior a 50 kΩ
Contacto de salida
(10 kΩ)
Contacto de salida Forma C para activarse cuando la resistencia de
aislamiento eléctrico es inferior a 10 kΩ
Salida analógica
(0-1 mA)
Proporciona el medio para conectarse a un medidor opcional
(PGA-0510) o a un sistema de control
Montaje en riel DIN o
superficie Diversas opciones para una fácil instalación
Características y beneficios
Accesorios
A
A
ACCESORIOS REQUISITOS
Serie PGH Requiere de >1.300 V
PGA-0510 Opcional
SERIE PGR-3200
Monitor de aislamiento
47
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
1
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/se-601
Protección de fallas de conexión a tierra - Sistema de CC sin conexión a tierra
Descripción
El SE-601 es un relevador para detección de fallas de conexión a tierra
basado en un microprocesador para sistemas de CC sin conexión
a tierra. Brinda alta protección contra fallas de conexión a tierra sin
los problemas asociados con disparos no deseados. La corriente de
falla de conexión se monitorea utilizando un Módulo de referencia
a tierra Serie SE-GRM, que consta de una red de resistores que
limitan la corriente de falla de conexión a 25 mA. El SE-601 se utiliza
en sistemas de CC sin conexión a tierra que varían desde circuitos
de control industriales de 24 V CC hasta sistemas solares y de
transporte de 1000 V CC.
SERIE SE-601 (PGR-2601)
Monitor de fallas de conexión a tierra de CC
Especificaciones
Números de dispositivo IEEE Relevador de sobrecorriente CC (76G)
Voltaje de entrada Ver información para pedir
Dimensiones H 75 mm (3"); A 55 mm (2,2"); P 115 mm (4,5")
Configuraciones del nivel
de disparo 1-20 mA
Configuraciones del tiempo
de disparo 0,05-2,5 s
Contactos de salida Forma A y Forma B aislados
Modo de funcionamiento
del contacto Con o sin control automático de protección
seleccionable
Botón de prueba Local
Botón de reconfiguración Local y remoto
Salida analógica 0-5 V
Terminado general Consultar en fábrica
Aprobaciones Certificado por CSA, certificado de UL (E340889),
CE (Unión Europea), C-Tick (Australiana)
Garantía 5 años
Montaje en DIN, Superficie (estándar)
Panel (con adaptador PMA-55 o PMA-60)
NÚMERO DE PEDIDO CONTROL DE ALIMENTACIÓN
SE-601-OU 120/240 V CA/V CC
SE-601-OD 12/24 V CC
SE-601-OT 48 V CC
ACCESORIOS REQUISITOS
Serie SE-GRM Requerido
PGA-0500 Opcional
PMA-55 Opcional
PMA-60 Opcional
Nota: Para un óptimo terminado general comuníquese con la fábrica.
Información para pedir
Diagrama de circuitos simplificado
Módulo de referencia a tierra Serie SE-GRM
Accesorio requerido, utilizado para conectar el
Monitor de fallas de conexión a tierra SE-601 CC en la
unidad de CC.
Medidor de porcentaje (%) de corriente analógico
PGA-0500
El medidor analógico opcional montado en el panel
indica la corriente de falla de conexión a tierra como
un porcentaje de 22 mA.
CARACTERÍSTICAS BENEFICIOS
Pastilla ajustable
(1-20 mA)
Consta de diez configuraciones que brindan un amplio rango de
protección de nivel bajo
Retardo de tiempo ajustable
(50 milisegundos-2,5 s)
Retardo de disparo ajustable que permite una protección instantánea
o respuesta con retardo
Contactos de salida Contactos de salida Forma A y Forma B para el funcionamiento de
circuitos de disparo y de alerta separados
Salida analógica
(0-5 V)
Proporciona el medio para conectarse a un medidor
(PGA-0500) o a un sistema de control
Memoria de disparo no volátil Retiene el estado de disparo cuando está sin energía para simplificar
la resolución de problemas
Modo de funcionamiento de
contacto seleccionable
Modos de funcionamiento con o sin control automático de protección
que permiten que la conexión se derive o reducir el voltaje en el
disyuntor
Basado en microprocesador No requiere de calibración que reduce costos de mantenimiento
Características y beneficios
Accesorios
A
MÓDULO DE REFERENCIA
A TIERRA
ALIMENTACIÓN
NO CONECTADA
A TIERRA
L2
SE-601
SERIE SE-GRM
L1
+
-
(Monitor de fallas de
conexión a tierra CC)
A
48
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
1
www.littelfuse.com/el731
CT1 CT2
L2
L1
ALIMENTACIÓN
CA CONECTADA
A TIERRA
SERIE EL731
(Relevador sensible
de ltración a tierra
CA/CC)
A
B
C
CT1
L2
L1
SERIE EL731
(Relevador sensible
de ltración a tierra
CA/CC)
ALIMENTACIÓN
CC CONECTADA
A TIERRA
+
–
Descripción
El EL731 es un relevador de alta sensibilidad de falla a tierra de CA/
CC basado en un microprocesador que ofrece cobertura completa
para un amplio rango de frecuencias desde 0 hasta 6000 Hz. Para
todo el rango de frecuencias se requiere de dos CT, o se puede
utilizar un CT para sistemas de detección de alta o baja frecuencia
solamente. Una entrada de sensor RTD/PTC permite protección
contra sobrecalentamiento de un motor o unidad. El EL731 ofrece
configuraciones de medición, disparo y alarma protegidos por
contraseña y comunicaciones por red opcionales. Se utiliza
principalmente para brindar mayor protección contra fallas de
conexión a tierra de bajo nivel en unidades de velocidad variable, y
circuitos de CC.
SERIE EL731
Relevador de falla a tierra de
alta sensibilidad CA/CC
NÚMERO DE PEDIDO CONTROL
DE ALIMENTACIÓN COMUNICACIONES
EL731-00-X0 120/240 V CA/V CC Ninguno
EL731-01-X0 120/240 V CA/V CC DeviceNet™
EL731-02-X0 120/240 V CA/V CC Profibus®
EL731-03-X0 120/240 V CA/V CC EtherNet/IP™
EL731-04-X0 120/240 V CA/V CC Modbus® TCP
EL731-10-X0 48 V CC y 24 V CA Ninguno
EL731-11-X0 48 V CC y 24 V CA DeviceNet™
EL731-12-X0 48 V CC y 24 V CA Profibus®
EL731-13-X0 48 V CC y 24 V CA EtherNet/IP™
EL731-14-X0 48 V CC y 24 V CA Modbus® TCP
EL731-20-X0 24 V CC Ninguno
EL731-21-X0 24 V CC DeviceNet™
EL731-22-X0 24 V CC Profibus®
EL731-23-X0 24 V CC EtherNet/IP™
EL731-24-X0 24 V CC Modbus® TCP
Información para pedir
Diagrama de circuitos simplificado
ACCESORIOS REQUISITOS
CET SERIE EFCT Unidad requerida
Unidad de comunicación Serie AC700-CUA Opcional
Kit de montaje en superficie AC700-SMK Opcional
Carcasa hermética (IP66) AC700-CVR-00 para
aplicaciones de montaje en panel Opcional
Medidor analógico PGA-0520 Opcional
Accesorios
Transformador de corriente para falla de conexión a
tierra Serie EFCT
Transformador de corriente de secuencia cero
específicamente diseñado para detección de nivel bajo.
A
A A
A
Modo CA Modo CC
Protección de fallas de conexión a tierra – CA/CC Sistema conectado a tierra
Nota: Al definir un número de pieza, reemplace la “X” con “1” para producto conforme con AS/NZS 2081:2011, o de lo contrario defina con “0”.
Adaptador de comunicación Serie AC700-CUA
Adaptadores de comunicaciones de interfaz por red y
actualización de firmware opcional de instalación en el
campo para unidad EL731.
Carril DIN AC700-SMK y adaptador de montaje en
superficie
El EL731 se conecta en el adaptador para montaje
posterior.
Para ver un diagrama de conexiones detallado, consulte la página siguiente.
49
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
1
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/EL731
14 L1 L2/N
TIERRA
NC
TC
TB
TA
TC
TB
TA
TC PTC RTD
4-20mA PGA-0520
EFCT-X
EFCT-X
ALIMEN.
t˚
+t˚ TB
TA
AB
AA
SALIDA ANALÓGICA
RESTABLECIMIENTO REMOTO
RTD/PTC
LÍNEA 1 LÍNEA 2/N COMUNICACIÓN POR RED
OPCIONAL
FALLA
20-6000 HZ CT
DC-90 HZ CT
RST
GND
SH1
S12
S11
SH2
S22
S21
19
K1
22
25
K2
K3
20
16
15
18
21
23
24
26
17
2
1
5
4
3
11
10
9
8
7
6
13
12
(RELEVADOR SENSIBLE
DE FILTRACIÓN A TIERRA CA/CC)
EL731
+ –
Especificaciones
Números de dispositivos IEEE Fallas de conexión CA (50G/N, 51G/N),
Fallas de conexión CC (79G),
Sobrecalentamiento PTC (49),
Temperatura RTD (38, 49)
Voltaje de alimentación 120/240 V CA/V CC, 24 V CC,
48 V CC/24 V CA
Configuraciones del nivel
de disparo 30-5000 mA CA y CC
Configuraciones del nivel
de alarma 30-5000 mA CA y CC
Retardo en disparo 0,05-2 s
Contactos de salida 3 Forma C (programables)
Modo de funcionamiento
del contacto Con o sin control automático de protección
Restablecer Panel frontal y remoto
Frecuencia Respuesta, CT1 0-90 Hz
Frecuencia Respuesta, CT2 20-6000, 190-6000, 20-90, 20-3000 Hz;
seleccionable
Transformador de corriente Serie EFCT-x
Detección por CT Detección de apertura y cierre
Terminales Conector, fijación por cables,
0,2-2,5 mm2
(24-12 AWG)
Comunicaciones EtherNet/IP™, DeviceNet™, Profibus®, Modbus® TCP
(opcional)
Salida analógica 4-20 mA (seleccionable 0-5 A o
configuración de nivel de disparo de 0-100 %)
Terminado general Característica estándar
Dimensiones H 48 mm (1,9"); A 96 mm (3,8");
P 129 mm (5")
Aprobaciones Certificado por UL (E340889), CSA, RCM (Australia), CE
Garantía 5 años
Montaje Panel; superficie y DIN (con AC700-SMK opcional)
CARACTERÍSTICAS BENEFICIOS
Pastilla ajustable (30-5000 mA) La configuración de disparo ajustable proporciona un amplio rango de protección de nivel bajo y coordinación del sistema
Rango de frecuencia (0-90 Hz, 20-6000 Hz) Opera en modo CA o CC, o en ambos. Utilice rangos combinados o individuales. Medición separada
Pantalla OLED de 32 caracteres Medición de falla a tierra, configuración y programación
Indicación LED local Activación visual, alarma, indicación de conexión CT
Monitoreo de circuito CT Se activa cuando la CT no está conectada
Salida analógica (4-20 mA) Se conecta a la DCS. Permite la conexión con un medidor opcional (PGA-0520) o sistema de control
Retardo de tiempo ajustable Retardo de disparo ajustable para una rápida protección y coordinación del sistema
Configuraciones de disparo y alarmas Detecta una condición en deterioro antes de que ocurran daños
Entrada del sensor de temperatura Protección de la temperatura del motor o la unidad
Contactos de salida 3 funciones programables: 2 alarmas de funcionamiento y 1 circuito de disparo
Comunicación por red Conexión opcional para la red de la planta
Filtrado armónico Elimina los disparos no deseados debido al ruido armónico
Basado en microprocesador No requiere de calibración lo que reduce costos por mantenimiento
Alimentación eléctrica universal Proporciona flexibilidad para diversas aplicaciones
Características y beneficios
Diagrama de conexiones
Protección de fallas de conexión a tierra – CA/CC Sistema conectado a tierra
SERIE EL731
Relevador de alta sensibilidad de falla a tierra de CA/CC
Littelfuse se reserva el derecho de realizar cambios de producto sin previo aviso. El material en este documento es exacto tal como se comprobó en el momento de su publicación. Visite Littelfuse.com para
obtener información actualizada.
50
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
1
www.littelfuse.com/se-701
Descripción
El SE-701 es un relevador de seguridad contra fallas de conexión a
tierra basado en un microprocesador para resistencias y sistemas con
conexión directa a tierra. Además de utilizarse en sistemas comunes,
es particularmente idóneo para utilizarse en sistemas con contenido
armónico considerable. El SE-701 puede brindar protección en plantas
principales, protección para alimentadores o protección para cargas
individuales. La correcta selección de los transformadores de corriente
permite obtener el rango de alcance deseado. Puede conectar los
contactos de salida para utilizarlos en circuitos de interruptivos de
seguridad o en circuitos de atención por alarmas. La salida analógica
es compatible con un PLC o un medidor.
SERIE SE-701 (PGR-5701)
Monitor de fallas de conexión a tierra
Especificaciones
Números de dispositivos IEEE Fallas de conexión a tierra (50G/N, 51G/N)
Voltaje de entrada Ver Información para pedir
Dimensiones H 75 mm (3"); A 55 mm (2,2"); P 115 mm (4,5")
Configuraciones del nivel
de disparo Clasificación primaria CT de 1-99 %
Configuraciones del tiempo
de disparo 0,05-2,5 s
Modo de funcionamiento
del contacto Con o sin control automático de protección seleccionable
Filtrado armónico Característica estándar
Botón de prueba Característica estándar
Botón de reinicio Característica estándar
Monitoreo de circuito CT Característica estándar
Contactos de salida Forma A y Forma B aislados
Aprobaciones Certificado por CSA, certificado de UL (E340889),
CE (Unión Europea), C-Tick (Australiana)
Salida analógica 0-5 V
Terminado general Consultar en fábrica
Garantía 5 años
Montaje en DIN, Superficie (estándar)
Panel (con adaptador PMA-55 o PMA-60)
NÚMERO DE PEDIDO CONTROL DE ALIMENTACIÓN
SE-701-OU 120/240 V CA/V CC
SE-701-OD 12/24 V CC
SE-701-OT 48 V CC
SE-701-O3 24 V CA
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Pastilla ajustable (1-99 %)
Configuración de disparo según la entrada primaria del CT, y
puede utilizarse con cualquier unidad CT. Mínimo de 50 mA con
la Serie EFCT.
Retardo de tiempo ajustable
(50 milisegundos-2,5 s)
El retardo de disparo ajustable permite una rápida protección y
coordinación del sistema
Contactos de salida
Contactos de salida de fallas de conexión a tierra Forma A y
Forma B para el funcionamiento de circuitos de disparo y de
alerta separados
Salida analógica (0-5 V) Permite la conexión con un medidor opcional (PGA-0500) o un
sistema de control
Monitoreo de circuito CT Se activa cuando la CT no está conectada
DFT seleccionable o filtrado
para detección de picos Compatible con unidades de velocidad variable
Filtrado armónico Elimina las interrupciones no deseadas
Memoria de disparo
no volátil
Retiene el estado de disparo cuando está sin energía para
simplificar la resolución de problemas
Basado en
microprocesador
No requiere de calibración lo que reduce costos por
mantenimiento
Alimentación
eléctrica universal
Permite el funcionamiento en aplicaciones donde un lado del
PT está defectuoso, brindando así flexibilidad para diversas
aplicaciones
Características y beneficios
Nota: Para un óptimo terminado general comuníquese con la fábrica.
ACCESORIOS REQUISITOS
Transformador de corriente Requerido
PGA-0500 Opcional
PMA-55, PMA-60 Opcional
Tensión de bloqueo SE-EFVC Opcional
Accesorios
Transformador de corriente para fallas de conexión
a tierra
El modelo del transformador de corriente requerido
depende de la aplicación. Ofrecemos una variedad de
CT sensibles con líneas primarias de 5-30 A.
Medidor de porcentaje (%) de corriente analógico
PGA-0500
El medidor analógico opcional montado en el panel
indica la corriente de falla de conexión a tierra como
un porcentaje de la clasificación primaria.
A
B
A
B
C
L2
L1
ALIMENTACIÓN
ELÉCTRICA
SERIE SE-701
(Monitor de fallas
de conexión a tierra)
CT A
Protección de fallas de conexión a tierra - Sistemas con conexión directa a tierra
51
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
1
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/se-703
Protección de fallas de conexión a tierra - Sistemas con conexión directa a tierra
Descripción
El SE-703 es un relevador de seguridad contra fallas de conexión a tierra
basado en un microprocesador para resistencias y sistemas con
conexión directa a tierra. Ofrece detección de fallas de conexión a tierra
de alta sensibilidad a un nivel de 25 mA y puede utilizarse en sistemas
con alto contenido armónico. El SE-703 puede brindar protección para
alimentadores, o protección para cargas individuales. Puede conectar los
contactos de salida para utilizarlos en circuitos de interruptivos de
seguridad o en circuitos de indicación por alarmas. La salida analógica es
compatible con un PLC o un medidor. El SE-703 está específicamente
diseñado para cumplir con la directriz AS/NZS 2081:2011.
SERIE SE-703
Monitor de falla a tierra
Especificaciones
Números de dispositivos IEEE Averías de conexión a tierra (50G/N, 51G/N)
Voltaje de entrada Ver Información para pedir
Dimensiones H 75 mm (3"); A 55 mm (2,2"); P 115 mm (4,5")
Configuraciones del nivel
de disparo 25-500 mA
Configuraciones del tiempo
de disparo INST-500 ms
Modo de funcionamiento
de contacto Control automático de protección
Filtrado armónico Característica estándar
Botón de prueba Característica estándar
Botón de reinicio Característica estándar
Monitoreo de circuito CT Característica estándar
Contactos de salida Forma A y Forma B aislados
Aprobaciones Certificado por CSA, certificado de UL (E340889),
CE (Unión Europea), RCM (Australiana)
Conforme con directriz AS/NZS 2081:2011
Salida analógica 0-5 V
Terminado general Sí
Garantía 5 años
Montaje DIN, Superficie (estándar), Panel
(con adaptador PMA-55 o PMA-60)
NÚMERO DE PEDIDO CONTROL DE ALIMENTACIÓN
SE-703-OU 120/240 V CA/V CC
SE-703-OD 12/24 V CC
SE-703-OT 48 V CC
SE-703-O3 24 V CA
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Pastilla ajustable
(25-500 mA)
La configuración de disparo ajustable proporciona un amplio rango de
protección de nivel bajo y coordinación del sistema
Retardo del tiempo ajustable
(INST-500 ms)
El retardo de disparo ajustable permite una rápida protección y
coordinación del sistema
Contactos de salida Contactos de salida de fallas de conexión a tierra Forma A y Forma B para
el funcionamiento de circuitos de disparo y de alerta separados
Salida analógica
(0-5 V)
Permite la conexión con un medidor opcional (PGA-0500) o un sistema
de control
Monitoreo de circuito CT Se activa cuando la CT no está conectada
Modo de funcionamiento
del contacto
Modo de funcionamiento de control automático para aplicaciones de
voltaje bajo
Filtrado armónico Elimina las interrupciones no deseadas
Memoria de disparo
no volátil
Retiene el estado de disparo cuando está sin energía para simplificar la
resolución de problemas
Basado en microprocesador No requiere de calibración lo que reduce costos por mantenimiento
Alimentación eléctrica
universal
Permite el funcionamiento en aplicaciones donde un lado del PT está
defectuoso, brindando así flexibilidad para diversas aplicaciones
Características y beneficios
ACCESORIOS REQUISITOS
Serie EFCT Requerido
PGA-0500 Opcional
PMA-55 Opcional
PMA-60 Opcional
Tensión de bloqueo SE-EFVC Opcional
CT A
L2
L1
ALIMENTACIÓN
ELÉCTRICA
CONECTADA
A TIERRA
SERIE SE-703
(Monitor de ltración
a tierra)
A
B
C
Accesorios
Transformador de corriente para falla de conexión a
tierra Serie EFCT
Transformador de corriente de secuencia cero
específicamente diseñado para detección de nivel bajo.
Medidor de porcentaje (%) de corriente analógico
PGA-0500
El medidor analógico opcional montado en el panel indica
la corriente de falla de conexión a tierra como un punto de
ajuste o 5 A.
Serie PMA-60 – Adaptador de montaje
Necesario para montaje en panel y cumplir con directriz
AS/NZS 2081:2011
A
B
C
52
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
1
www.littelfuse.com/se-704
Protección de fallas de conexión a tierra - Sistemas con conexión directa a tierra
Descripción
El SE-704 es un relevador de seguridad contra fallas de conexión a
tierra basado en un microprocesador para resistencias y sistemas con
conexión directa a tierra. Ofrece detección de fallas de conexión a
tierra de alta sensibilidad a un nivel de 10 mA y puede utilizarse en
sistemas con alto contenido armónico. El SE-704 puede brindar
protección para alimentadores, o protección para cargas individuales.
Puede conectar los contactos de salida para utilizarlos en circuitos
interruptivo de seguridad o en circuitos de indicación por alarmas. La
salida analógica es compatible con un PLC o un medidor.
SERIE SE-704 (PGR-4704)
Monitor de falla a tierra
Especificaciones
Números de dispositivos IEEE Falla de conexión a tierra (50G/N, 51G/N)
Voltaje de entrada Ver Información para pedir
Dimensiones H 75 mm (3"); A 55 mm (2,2"); P 115 mm (4,5")
Configuraciones del nivel
de disparo 10 mA-5 A
Configuraciones del tiempo
de disparo 30-2000 ms
Modo de funcionamiento
del contacto Con o sin control automático de protección
seleccionable
Filtrado armónico Característica estándar
Botón de prueba Característica estándar
Botón de reinicio Característica estándar
Monitoreo de circuito CT Característica estándar
Contactos de salida Forma A y Forma B aislados
Aprobaciones certificado de UL (E340889), CSA, CE (Unión Europea)
C-Tick (Australiana)
Salida analógica 0-5 V y 0-1 mA
Terminado general Opcional
Garantía 5 años
Montaje en DIN, Superficie (estándar)
Panel (con adaptador PMA-55 o PMA-60)
NÚMERO DE PEDIDO CONTROL DE ALIMENTACIÓN
SE-704-0U 120/240 V CA/V CC
SE-704-0D 12/24 V CC
SE-704-0T 48 V CC
SE-704-03 24 V CA
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Pastilla ajustable
(10 mA-5 A)
La configuración de disparo ajustable proporciona un amplio rango de
protección de nivel bajo y coordinación del sistema
Retardo de tiempo ajustable
(30 ms-2 s)
El retardo de disparo ajustable permite una rápida protección y
coordinación del sistema
Contactos de salida Contactos de salida de fallas de conexión a tierra Forma A y Forma B para
el funcionamiento de circuitos de disparo y de alerta separados
Salida analógica
(0-5 V y 0-1 mA)
Permite la conexión con un medidor opcional (PGA-0500)
o un sistema de control
Monitoreo de circuito CT Se activa cuando la CT no está conectada
Modo de funcionamiento de
contacto seleccionable
Modos de funcionamiento con control automático de protección o sin éste
que permiten que la conexión se derive o reducir el voltaje en el disyuntor
Filtrado armónico Elimina las interrupciones no deseadas
Memoria de
disparo no volátil
Retiene el estado de disparo cuando está sin energía para simplificar la
resolución de problemas
Basado en microprocesador No requiere de calibración lo que reduce costos por mantenimiento
Alimentación eléctrica
universal
Permite el funcionamiento en aplicaciones donde un lado del PT
está defectuoso, brindando así flexibilidad para diversas aplicaciones
Características y beneficios
Nota: Para un óptimo terminado general comuníquese con la fábrica.
ACCESORIOS REQUISITOS
Serie SE-CS30 Requerido
PGA-0500 Opcional
PMA-55, PMA-60 Opcional
Accesorios
Transformador para fallas de conexión a tierra Serie
SE-CS30
Transformador de corriente de secuencia cero
específicamente diseñado para detección de nivel bajo.
Se incluye un acondicionador de flujo para prevenir la
saturación.
Medidor de porcentaje (%) de corriente analógico
PGA-0500
El medidor analógico opcional montado en el panel indica
la corriente de falla de conexión a tierra como un punto
de ajuste o 5 A.
A
CT
L2
L1
ALIMENTACIÓN
ELÉCTRICA
CONECTADA
A TIERRA
SERIE SE-704
(Monitor de ltración a tierra)
A
B
C
A
B
53
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
1
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/IndustrialShockBlock
NÚMERO DE
PEDIDO
VOLTAJE
(V)
NIVEL DE
DISPARO (mA) CATEGORÍA/CLASE UL
SB6100-00X-0 208
20 (fijo)
GFCI para fines especiales
Clase C UL 943C SB6100-10X-0 240
SB6100-20X-0 480
SB6100-30X-0 600 GFCI para fines especiales
Clase D UL 943C
SB6100-01X-0 208
6, 10-100 en
incrementos
de 10
Dispositivo de protección
contra fallas de conexión a
tierra para equipo (EGFPD)
UL 943/UL 1053
SB6100-11X-0 240
SB6100-21X-0 480
SB6100-31X-0 600
Información para pedir
CARACTERÍSTICAS BENEFICIOS
Curva de disparo en
tiempo inverso UL 943
Detecta e interrumpe para proteger al personal y reducir la
probabilidad de disparos no deseados
Tiempo de disparo mínimo
< 20 mseg.
Reduce el riesgo de fibrilación ventricular por corriente de fuga de
250 mA y superior
Nivel de disparo fijo UL 943C
(GFCI 20 mA)
Protección de personal para sistemas con corriente de fuga superior al
estándar de 6 mA establecido bajo directriz UL 943 Clase A
Niveles de disparo seleccionables
(EGFPD)
Brinda mayor seguridad cuando un cliente opera la unidad con una
configuración inferior a 20 mA (GFCI) y la configuración superior a
20 mA puede reducir las interrupciones no deseadas en sistemas con
corriente de fuga alta.
Función de monitoreo/interrupción
de conexión a tierra UL 943C
Protege contra choques eléctricos activándose toda vez que se
interrumpa la continuidad del cable a tierra entre el bloqueo industrial
de choques eléctricos y la carga.
Voltaje bajo, pérdida de intensidad,
detección de vibración
Garantiza un correcto funcionamiento y prolonga la vida útil del
contactor interno
3 fusibles de entrada de Clase T
de 600 V
Los fusibles brindan protección contra la sobrecorriente para circuitos
de 100 A y una clasificación de corriente contra cortocircuitos superior
(SCCR) de 50 kA.
Terminado general Los circuitos internos están recubiertos para protegerlos contra la
humedad y corrosión, aun así son reparables
Interfaz del operador Muestra el estado de la unidad, los tipos de alarma, el porcentaje de
corriente de fuga, y posee funciones de prueba y reinicio
Contacto auxiliar Proporciona un contacto usualmente abierto para indicación remota
Prueba automática Todas las opciones ISB (revisión 01 o superior) incluyen una función de
prueba automática
Arrancador del motor Permite que el usuario inicie y detenga el motor desde la interfaz
Características y beneficios
Diagrama de circuitos simplificado
Industrial
CONTACTO
AUXILIAR
K
CARGA
SB-OPI
(Interfaz del
operador)
G
DISPOSITIVO DE
TERMINACIÓN
INCLUIDO PARA MODELOS SB6100
G
L1
L2
L3
SB6100
*
GC
* Para una carga monofásica, empalme L2 y L3 y
utilizar L1 y L2 como terminales de entrada
A
B
Nota: x=0 para modelos de chasis abierto y 1 para modelos sellados
Descripción
Interruptor de circuitos con fallas de conexión a tierra para fines
especiales (GFCI), Clase C y Clase D
El bloqueo industrial de choques eléctricos (ISB) es un dispositivo de protección
diseñado para cumplir los requisitos más recientes del GFCI para fines especiales
definidos por la directriz UL 943C. Los El ISB es la primera y única unidad GFCI
permanentemente conectada de Clase C y Clase D en el mercado. GFCI Clase C
son aptos para utilizarse en sistemas donde el voltaje línea a línea es de 480 V o
menor con un nivel de disparo de 20 mA, mientras que los GFCI Clase D se pueden
emplear en sistemas de 600 V. Estas mejoras a los GFCI Clase A estándar (nivel
de disparo de 6 mA utilizados en sistemas de 240 V o menos) se implementaron
para permitir el uso de GFCI en aplicaciones industriales. El ISB incluye una
característica de prueba automática y cumple con la directriz UL1998 para software
en componentes programables estándar.
Dispositivo de protección contra fallas de conexión a tierra para equipo
(EGFPD)
El ISB también viene disponible con configuraciones de protección ajustables como
un EGFPD. Los modelos EGFPD pueden ser programados para activarse a 6 mA o
desde 10 hasta 100 mA en incrementos de 10 mA. Esto ofrece mayor flexibilidad
debido a que los dispositivos GFCI no permiten integrar un nivel de disparo ajustable.
Clasificación y modelos
El ISB (GFCI y EGFPD) está disponible para voltajes desde 208 hasta 600 V con
una corriente de carga máxima total de 100 A, y una unidad de protección por
sobrecorriente integrada y suministrada por Littelfuse con fusibles Clase T. La
carga puede ser de 1 fase (línea a línea) o de 3 fases; sin embargo, no puede tener
una línea neutra. La red eléctrica puede estar sólidamente conectada a tierra o
conectada a tierra con resistencia alta.
Hay dos opciones para carcasas disponibles: modelos de chasis abierto con
certificado UL disponibles para instalación en unidades eléctricas existentes y
modelos sellados con certificado UL que incluyen una carcasa NEMA-4X para
instalaciones independientes.
Monitor de cable a tierra (carga a tierra)
El ISB además monitorea la conexión del cable a tierra (carga a tierra) entre el ISB y
la carga. Esta es una función necesaria para los dispositivos GFCI y es opcional para
los dispositivos EGFPD. Si se interrumpe la conexión, el ISB generará una alarma
cambiando el estado de los contactos de alarma. Este circuito de monitoreo incluye
un cable extra (cable piloto) entre el ISB y la carga (ya que la corriente de monitoreo
es baja, solo se requiere de un cable pequeño). En la carga, el cable piloto está
conectado a un dispositivo final. El otro extremo del dispositivo final se conecta a la
carga en tierra (generalmente en la carcasa).
*Patentado
Interruptores de circuitos con fallas de conexión a tierra - Protección de personal
SERIE SB6000
Modelo sellado* Modelo de chasis abierto*
Interfaz del operador*
54
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
1
Interfaz del operador
(AC6000-OPI-00)
1N5339B - Dispositivo final
Terminación para verificación de conexión
a tierra con guía axial, incluida con la serie
SB6000
SE-TA6 - Ensamblefinal
Ensamble de terminación opcional con
terminales y orificios de montaje
Ensamble final SE-TA6-SM
de montaje por pernos
Para verificación de conexión a tierra opcional
para bombas sumergibles
AC6000-CART-00
Carretilla de dos ruedas
Opcional para el montaje del ISB que permite
el desplazamiento de la unidad mientras está
desconectada
AC6000-MNT-00
Marco de montaje
Opcional para el montaje del ISB a una carretilla
u otra superficie. Incluido con la unidad
AC6000-CART-00.
www.littelfuse.com/IndustrialShockBlock
Especificaciones
Clasificación del voltaje Ver información para pedir
Clasificación de la corriente 100 A (continua)
Carga Trifásica, 3 cables (sin neutro) o monofásica
(línea a línea), 60 Hz
Cortocircuitos 50 000 A
Clasificación de la corriente
Configuraciones del nivel
de disparo Seleccionable (6, 10, 20, 30, 40, 50, 60, 70, 80, 90,
100 mA), o fijo a 20 mA
Configuración del tiempo
de disparo Curva de disparo de tiempo inverso
Carcasa NEMA 4X, de poliéster, con bloqueo
Temperatura de
funcionamiento –35 °C (–31 °F) a +40 °C (104 °F),
hasta +66 °C (151 °F) con reducción de los valores
especificados
Requisitos para cableado 2/0 AWG (máximo)
Aprobación GFCI: certificado UL (modelos sellados) y UL Componente
reconocido (modelos de chasis abierto) egfpd: certificado
de cULus (modelos sellados) y cURus
Componente reconocido (modelos de chasis abierto);
conforme con UL1998 (revisión 01 o superior); Todos los
modelos con certificación CSA
Dimensiones Sellados: H 453,8 mm (17,9”);
A 406,2 mm (16”); P 223,3 mm (8,8”)
Chasis abierto: H 455,0 mm (17,9”);
A 340,7 mm (13,4”); P 174,9 mm (6,8”)
Garantía 1 año
Accesorios Diagrama de conexiones
El SB6100 está instalado en línea entre la alimentación o el dispositivo de
protección de sobrecorriente existente y la carga.
El SB6100 de chasis abierto puede instalarse en equipo eléctrico y la versión
sellada generalmente se instala en pared.
Alimentación entrante
Bloqueo
industrial
de choques
eléctricos SB6100
Modelo sellado
Interruptores
automáticos
SB6100
Bloqueo
industrial
de choques
eléctrico
Modelo de
chasis abierto
Interruptores
automáticos
Littelfuse se reserva el derecho de realizar cambios de producto sin previo aviso. El material en este documento es exacto tal como se comprobó en el momento de su publicación. Visite Littelfuse.com para
obtener información actualizada.
Interruptores de circuitos con fallas de conexión a tierra - Protección de personal
SERIE SB6000
A
B
ACCESORIOS REQUISITOS PÁGINA
AC6000-OPI-00 Incluido N/A
1N5339B Incluido 477
SE-TA6 Opcional 477
SE-TA6-SM Opcional 477
SE-TA6ASF-WL Opcional 477
AC6000-CART-00 Opcional N/A
AC6000-MNT-00 Opcional N/A
Información para pedir - Accesorios
55
Relevadores de protección
PROTECCIÓN DE FALLA A TIERRA
1
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pgr-4300
Protección contra fallas de conexión a tierra – Generador y función individual
SERIE PGR-4300 (GFA300)
Relevador de seguridad contra fallas de
conexión a tierra en un generador
NÚMERO DE PEDIDO CONTROL DE ALIMENTACIÓN
PGR-4300-12 12 V CC
PGR-4300-24 24 V CC
PGR-4300-120 120 V CA
Descripción
El relevador de seguridad contra fallas de conexión para generador
PGR-4300 proporciona un método simple para la detección de una
condición de falla de conexión en generadores sin la necesidad de
transformadores de corriente (CT). Esto simplifica la instalación
considerablemente. Además, es compatible con conmutadores
de transferencia de cuatro y tres poleas. Este relevador también
monitorea la continuidad de la ruta de neutro a tierra. El PGR4300 es ideal para cualquier generador o aplicación donde no hay
suficiente espacio para instalar CT.
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
No requiere de CT Ahorra espacio y simplifica la instalación
Pastilla ajustable
(100-1200 A)
La configuración de disparo ajustable proporciona un amplio rango
de protección y permite la coordinación del sistema
Retardo del tiempo ajustable
(0-1 s)
El retardo de disparo ajustable permite una rápida protección y
coordinación del sistema
Contactos de salida Contactos de salida para fallas de conexión a tierra Forma C para
fines de alarma y disparo
Salida analógica
(0-1 mA)
Proporciona el medio para conectarse a un medidor opcional
(PGA-0500) o a un sistema de control
Alarma de continuidad N-G Monitorea la integridad neutro a tierra y genera alarmas si la ruta
crea un circuito abierto
Filtrado pasivo Elimina las interrupciones no deseadas
Características y beneficios
Medidor de porcentaje (%) de corriente
analógico PGA-0500
El medidor analógico opcional montado en el
panel indica la corriente de falla de conexión a
tierra como un punto de ajuste.
Accesorios
ACCESORIOS REQUISITOS
PGA-0500 Opcional
PMA-55 Opcional
PMA-60 Opcional
Nota: Para un óptimo terminado general, comuníquese con la fábrica.
Especificaciones
Números de dispositivos IEEE Averías de conexión a tierra (50G/N, 51G/N)
Voltaje de entrada Ver información para pedir
Dimensiones H 75 mm (3"); A 55 mm (2,2");
P 115 mm (4,5")
Configuraciones del nivel
de disparo 100-1200 A
Configuraciones de retardo
del tiempo de disparo 0-1 s
Modo de funcionamiento
del contacto Sin control automático de protección
Botón de prueba Local
Botón de reconfiguración Local y remoto
Contactos de salida Forma C
Salida analógica 0-1 mA
Terminado general Consultar en fábrica
Aprobaciones Certificado por UL (E183688)
Garantía 5 años
Montaje en DIN, Superficie (estándar)
Panel (con adaptador PMA-55 o PMA-60)
PGR-4300
(Relevador de fallas
de conexión a tierra
en generador)
Control
Alimentación
eléctrica
G
56
Relevadores de protección
www.littelfuse.com/relayscontrols ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
©2018 Controladores y Relevadores de Protección de Littelfuse 57 www.littelfuse.com/relayscontrols
MONITOREO DE CONDUCTOR A TIERRA
2
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas
Para obtener más información…
y para descargar nuestras fichas técnicas
sobre verificación y detección de fallas de
conexión a tierra, visite
Littelfuse.com/Ground-faultPaper
MONITOREO DE CONDUCTOR A TIERRA
Monitorea constantemente la integridad del conductor a tierra para proteger el equipo
portátil contra voltajes peligrosos generados por fallas en la conexión a tierra.
Serie SE-105 / SE-107 Monitor de verificación y detección de fallas
de conexión a tierra...............................................58
Serie SE-134C / SE-135 Monitor de verificación y detección de fallas
de conexión a tierra...............................................59
58 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas
MONITOREO DE CONDUCTOR A TIERRA
2
www.littelfuse.com/se-105, www.littelfuse.com/se-107
SERIE SE-105/SE-107
Monitor de verificación y detección de fallas
de conexión a tierra
Descripción
El SE-105/SE-107 es una combinación de un monitor de conductor
conectado a tierra y un relevador de detección de fallas de conexión
a tierra para sistemas de resistencia conectados a tierra. Monitorea
constantemente la integridad del conductor a tierra para proteger
el equipo portátil contra voltajes peligrosos generados por fallas en
la conexión a tierra. El SE-105/SE-107 es una excelente opción para
cables de arrastre de 5 kV o menores, en aplicaciones de minería
subterránea. Para voltajes más altos o aplicaciones por cables
extensos, refiérase a la serie SE-134C/SE-135.
Especificaciones
Números de dispositivo IEEE Relevador de bloqueo o verificación (3GC),
Averías de conexión a tierra (50G/N, 51G/N)
Voltaje de entrada Ver información para pedir
Dimensiones H 150 mm (5,9"); A 109 mm (4,3");
P 100 mm (4")
Configuraciones del nivel
de disparo 0,5; 2; 4 A
Configuraciones del tiempo
de disparo 0,1-1 s
Modo de funcionamiento
del contacto Con o sin control automático de protección seleccionable
(SE-105)
Control automático de protección solamente (SE-107)
Filtrado armónico Característica estándar
Botón de reconfiguración Local y remoto
Contactos de salida Forma A y aislado eléctricamente
Aprobaciones certificado de CSA, certificación UL (E340889),
C-Tick (Australiana)
Terminado general Característica estándar
Garantía 5 años
Montaje Superficie
NUMERO DE PARTE CONTROL DE ALIMENTACIÓN
SE-105 120 V CA
SE-105D 120 V CA/V CC
SE-105E 240 V CA
SE-107 120 V CA
SE-107D 120 V CA/V CC
SE-107E 240 V CA
Información para pedir
Para conocer las opciones de pedidos, consulte el manual en línea.
Diagrama de circuitos simplificado
Transformador de corriente Serie CT200
El CT requerido detecta la corriente con fallas de conexión
a tierra.
1N5339B - Dispositivo de terminación
Terminación para verificación de conexión a tierra con guía
axial de 5 W; incluida con la serie SE-105/SE-107.
SE-TA6 Ensamble de terminación
Ensamble de terminación opcional con terminales y orificios
de montaje
Ensamble de terminación SE-TA6-SM de montaje por pernos
Terminación para verificación de conexión a tierra opcional
de 50 Wresistente y compacto para bombas sumergibles. La
terminal de alambre facilita la instalación.
Accesorios
A
B
CABLE DE
ARRASTRE CT
L2
L1
DISPOSITIVO DE
TERMINACIÓN
A
G
GC
C
B ALIMENTACIÓN
ELÉCTRICA
CONECTADA
A TIERRA
M
SERIE SE-105
SERIE SE-107
(Monitor de
verificación
y fallas de
conexión a tierra)
B
CARACTERÍSTICAS BENEFICIOS
Ajuste de disparo
(0,5; 2; 4 A)
La unidad puede utilizarse en una amplia variedad de
aplicaciones de cables de arrastre
Retardo del tiempo ajustable
(0,1-2 s)
Retardo de disparo ajustable para una rápida protección y
coordinación del sistema
Filtro armónico Previene operaciones en falso
Ensamble de terminación con
características de efecto zener
Proporciona verificación de enlace para comprobar la
conexión a tierra de forma confiable
Circuito de verificación de conexión a tierra
y control automático de protección
Garantiza que el circuito de conexión a tierra permanezca
protegido incluso en caso de fallas en el equipo
Terminado general Su revestimiento adicional protege el tablero de circuitos en
entornos severos
SE-105: ajustable para bajo voltaje (UV) o
modo de disparo derivado Brinda flexibilidad para diversas aplicaciones
SE-107 SE-107: modo de disparo de bajo
voltaje (UV) solamente
Elimina la posibilidad de un cambio no autorizado en el
circuito de disparo
Características y beneficios
ACCESORIOS REQUISITOS
Serie CT200 Requerido
1N5339B Incluido
SE-TA6, SE-TA6-SM Opcional
Serie SE-TA6A Opcional
RK-102, RK-105, RK-105I Opcional
RK-13 Opcional
PPI-600V Opcional
A
Monitoreo de conductor a tierra
©2018 Controladores y Relevadores de Protección de Littelfuse 59
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas
MONITOREO DE CONDUCTOR A TIERRA
2
www.littelfuse.com/se-134c, www.littelfuse.com/se-135
Monitoreo de conductor a tierra
SERIE SE-134C/SE-135
Monitor de verificación y detección de fallas
de conexión a tierra Descripción
El SE-134C/SE-135 es una combinación basada en microprocesador de
un monitor conectado a tierra y un relevador de detección de fallas de
conexión a tierra o sistemas con conexión directa a tierra. Monitorea
constantemente la integridad del conductor a tierra para proteger
el equipo portátil contra voltajes peligrosos generados por fallas en
la conexión a tierra. El SE-134C/SE-135 ha sido probado en campo
en monitoreo de cables de arrastre en equipo móvil de gran tamaño
tales como dragas, palas mecánicas, cables de potencia para grúas
de muelle, grúas de acople lateral, elevadoras-apiladoras, bombas
sumergibles y bandas transportadoras portátiles.
Especificaciones
Números de dispositivo IEEE Relevador de bloqueo o verificación (3GC),
Averías de conexión a tierra (50G/N, 51G/N)
Voltaje de entrada 65-265 V CA; 85-275 V CC; 18-72 VCC
Dimensiones H 213 mm (8,4"); A 99 mm (3,9"); P 132 mm (5,2")
Configuraciones del nivel
de disparo 0,5-12,5 A para SE-CS10, 2-50 A para SE-CS40
Configuraciones del tiempo
de disparo 0,1-2,5 s
Modo de funcionamiento
del contacto Con o sin control automático de protección seleccionable
Filtrado armónico Característica estándar
Botón de prueba Característica estándar
Botón de restablecimiento Característica estándar
Contactos de salida Forma A y Forma B aislados eléctricamente, dos Forma C
Aprobaciones Certificado de CSA, certificación UL (E340889),
C-Tick (Australia)(3), CE(3)
Terminado general Característica estándar
Garantía 5 años
Montaje Panel, superficie
Resistencia de disparo GC 28 Ω (Estándar), 45 Ω (Opción XGC)
NÚMERO
DE PARTE OPCIÓN ALIMENTACIÓN
ELÉCTRICA COMUNICACIÓN
SE-134C Vacío o XGC
0=120/240 V CA/V CC
0=Ninguna 1=24/48 V CC (1)
SE-135 Vacío o XGC
0=120/240 V CA/V CC 0=Ninguna
1=24/48 V CC (1) (2) 3=Ethernet (1)
Información para pedir
(1) CE/C-Tick no disponible.
(2) No disponible con opción de Ethernet 3.
(3) Ver información para pedir.
Consulte la guía de selección de transformadores de corriente y la información de accesorios.
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Captación ajustable
(0,5-12,5 A para SE-CS10)
(2-50 A para SE-CS40)
La unidad puede utilizarse en una amplia variedad de aplicaciones
de cables de arrastre
Retardo del tiempo ajustable
(0,1-2,5 s)
Retardo de disparo ajustable para una rápida protección y
coordinación del sistema
Contactos de salida Alarmas separadas para fallas de verificación y conexión a tierra
Indicación LED para verificación
de conexión a tierra
La indicación de cables de verificación abiertos o en corto
facilita la identificación de fallas
Monitoreo de enlace CT Se activa cuando la CT no está conectada
Rechazo de alta inducción
de AC
Permite que la unidad pueda utilizarse en aplicaciones con alto
voltaje y cables extensos
Filtro DFT (armónico) Impide la ejecución errónea
Ensamble de terminación con
características de efecto zener
Proporciona verificación de enlace para comprobar la conexión a
tierra de forma confiable
Circuitos de control automático
de protección
Garantiza que los circuitos de verificación y conexión a tierra
permanezcan protegidos incluso en caso de fallas en el equipo
Terminado general Su revestimiento adicional protege el tablero de circuitos en
entornos severos
Opción XGC Aumenta la longitud máxima del cable para monitorear los
cables de verificación de conexión a tierra (10 km generalmente)
Características y beneficios
ACCESORIOS REQUISITOS
Serie SE-CS10 Requerido
Serie SE-CS40 (para SE-135) Opcional
Serie SE-TA6A (para SE-134C) Requerido
Combinación de SE-TA12A/SE-TA12B (para SE-134C) Opcional
Serie SE-TA12A (para SE-135) Requerido
SE-IP65CVR-G Opcional
RK-132 Opcional
PPI-600V Opcional
CABLE DE
ARRASTRE CT
L2
L1
DISPOSITIVO DE
TERMINACIÓN
A
G
GC
C
B ALIMENTACIÓN
ELÉCTRICA
CONECTADA
A TIERRA
M
SERIE SE-134C
SERIE SE-135
(Monitor de
verificación y
fallas de conexión
a tierra)
B
A
Transformador de corriente de fallas de conexión
a tierra Serie SE-CS10 o SE-CS40
El transformador de corriente de secuencia en cero
detecta la corriente con fallas de conexión a tierra.
Ensamble de terminación Serie SE-TA6A, o Serie
SE-TA12A
Ensamble de terminación requerido;
temperatura compensada.
Accesorios
A
B
60 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols
61
Relevadores de protección
MONITOREO DE CONEXIÓN A TIERRA/RESISTENCIA DE CONEXIÓN A TIERRA
3
©2018 Controladores y Relevadores de Protección de Littelfuse www.littelfuse.com/relayscontrols
Conocimientos aplicados | Respuestas entregadas
Para obtener más información…
y para descargar nuestros documentos
preliminares sobre por qué los NGR
requieren monitoreo continuo, visite
Littelfuse.com/TechnicalCenter
Diagrama de dimensionado del resistor
de conexión de neutro a tierra
Voltaje del sistema
(Línea a línea)
Corriente de potencia nominal
NGR y resistencia Clasificación del tiempo
208 V 5 A/24 Ohmios Continuo
480 V 5 A/55 Ohmios Continuo
600 V 5 A/69 Ohmios Continuo
2400 V 5 A/277 Ohmios o 10 A/139 Ohmios Continuo o 10 s
4160 V 5 A/480 Ohmios o 10 A/240 Ohmios Continuo o 10 s
13 800 V 10 A/798 Ohmios o 200 A/40 Ohmios 10 s
25 000 V 200 A/72 Ohmios o 400 A/36 Ohmios 10 s
34 500 V 200 A/100 Ohmios o 400 A/50 Ohmios 10 s
Nota: Los valores indicados aplican para transformadores de cualquier tamaño y son típicos.
Nota: La tabla anterior es para fines ilustrativos únicamente. Los valores reales pueden diferir según
varios aspectos del sistema específico, tales como la corriente de carga capacitiva y los resultados del
estudio de coordinación.
MONITOREO DE CONEXIÓN A TIERRA/
RESISTENCIA DE CONEXIÓN A TIERRA
Monitorea constantemente la integridad del conductor a tierra para proteger el
equipo portátil contra voltajes peligrosos generados por fallas en la conexión
a tierra
Diagrama de dimensionado del resistor de conexión de neutro a tierra...........61
Serie SE-325 Monitor de resistor de conexión de neutro a tierra.......62
Serie SE-330/
SE-330HV Monitor de resistor de conexión de neutro a tierra.......63
Serie SE-330AU Monitor de resistor de conexión de neutro a tierra.......65
Serie NGR Paquetes de resistencia de conexión de neutro ............66
Serie NGRM-ENC Monitor de resistor de conexión de neutro
a tierra sellado ...............................................................67
62
Relevadores de protección
MONITOREO DE CONEXIÓN A TIERRA/RESISTENCIA DE CONEXIÓN A TIERRA
3
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/se-325
Monitoreo del resistor de conexión neutro a tierra
SERIE SE-325 (PGM-8325)
Monitor del resistor de conexión neutro a tierra
Descripción
El monitor del resistor de conexión neutro a tierra SE-325 se utiliza
en sistemas de conexión a tierra de resistencia hasta de 25 kV para
monitorear la integridad de la ruta neutro a tierra y para detectar
fallas de conexión a tierra. El monitor mide la corriente y el voltaje
en un transformador o generador de conexión neutro a tierra y la
continuidad del resistor de neutro a tierra (NGR). El SE-325 coordina
estas tres mediciones para detectar conexión errónea, corrosión,
fallas de conexión a tierra, o fallas en el NGR, y proporciona una
alarma o activa el contacto de salida.
NÚMERO DE PARTE CONTROL DE ALIMENTACIÓN
SE-325 120 V CA
SE-325D 120 V CA/V CC
SE-325E 240 V CA
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Monitoreo NGR continuo
Detecta fallas del resistor en segundos, reduce el
riesgo de sobrevoltaje transitorio, elimina el riesgo de
problemas por detección de fallas de conexión
Detección de fallas de
conexión a tierra
Protección principal o secundaria para detectar una falla
en la conexión a tierra en cualquier sistema monitoreado
Disparo ajustable(0,5-4 A) Seleccione el nivel de sensibilidad más alto sin
funcionamiento errónea
Retardo del tiempo
ajustable(0,1-2 s)
El retardo de disparo ajustable permite la coordinación del
sistema
Contactos de salida Contacto de salida Forma A
Modo de funcionamiento
de contacto seleccionable
Modos de funcionamiento con control automático de
protección o sin éste que permiten que la conexión se
derive o reducir el voltaje en el disyuntor
Características y beneficios
NGR
L2
CT
L1
SERIE SE-325
SERIE ER
(Resistor de detección)
(Monitor NGR)
A
B
ACCESORIOS REQUISITOS
Serie CT200 Requerido
Serie ER Requerido
SE-MRE-600 Opcional
RK-325, RK-325I, RK-302 Opcional
RK-13 Opcional
NGRM-ENC Opcional
Especificaciones
Números de dispositivo IEEE Averías de conexión a tierra (50G/N, 51G/N),
Sobrevoltaje (59N), Relé de bloqueo (86),
Relé de verificación (3)
Voltaje de entrada Ver información para pedir
Dimensiones H 150 mm (5,9"); A 109 mm (4,3"); P 100 mm (4")
Configuraciones del nivel
de disparo GF 0,5-4 A
Configuraciones del tiempo
de disparo GF 0,1-2 s
Configuraciones del nivel
de disparo RF 20-400 V CA (sistemas ≤5 kV)
100-2000 V CA (sistemas >5 kV)
Modo de funcionamiento
del contacto Con o sin control automático de protección seleccionable
Botón de restablecimiento Característica estándar
Contactos de salida Forma A
Aprobaciones certificado de CSA, certificación UL (E340889),
C-Tick (Australiana)
Terminado general Característica estándar
Garantía 5 años
Montaje Superficie
Transformador de corriente Serie CT200
El CT requerido detecta la corriente con fallas de
conexión a tierra.
B
Accesorios
A Resistor de monitoreo Serie ER
Interfaz requerida entre la red eléctrica y el SE-325.
Elimina los niveles de voltaje peligrosos en el monitor.
Restablecimiento e indicación remota Serie RK
Indicación remota de montaje en panel opcional
y ensambles de restablecimiento. Disponible en
configuraciones NEMA 1 o NEMA 4.
Para conocer las opciones de pedidos, consulte el manual en línea.
63
Relevadores de protección
MONITOREO DE CONEXIÓN A TIERRA/RESISTENCIA DE CONEXIÓN A TIERRA
3
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/se-330, www.littelfuse.com/se-330hv
Monitoreo del resistor de conexión neutro a tierra
Descripción
La serie SE-330 es un relé de monitoreo con resistor de conexión de
neutro a tierra y detección de fallas de conexión a tierra avanzado. Mide
la corriente neutra, el voltaje de neutro a tierra, y la resistencia de
neutro a tierra. Proporciona monitoreo continuo de la ruta de neutro a
tierra para verificar que el resistor de neutro a tierra (NGR) está intacto.
Este aspecto es de gran importancia, ya que un NGR abierto interpreta
problemas en la protección contra fallas de conexión y detecta la
corriente y esto podría generar una falsa determinación de que el
sistema está funcionando correctamente. El SE-330 puede utilizarse en
transformadores y generadores de voltaje bajo y medio con conexión a
tierra de resistencia alta o baja aplicable en instalaciones de tratamiento
de aguas residuales, productos químicos, petróleo, pupla y papel,
procesamiento y fabricación. Para aplicaciones de alto voltaje, utilice la
Serie SE-330HV. Para aplicaciones que requieren del cumplimiento con
la Directriz australiana AS/NZS 2081.3:2002, consulte la Serie SE-330AU.
Monitoreo del resistor
El SE-330 combina los valores medidos de resistencia, corriente, y
voltaje para verificar constantemente que el NGR esté intacto. Tiene la
capacidad de detectar fallas en un resistor independientemente de si
hay fallas o no en la conexión a tierra. Los resistores de detección se
adaptan al voltaje del sistema y se utilizan para monitorear el NGR en
sistemas de hasta 72 kV.
Monitoreo de fallas de conexión a tierra
El SE-330 utiliza un transformador de corriente idóneo para la
aplicación para detectar de forma confiable corrientes con fallas de
conexión a tierra tan bajas como de 100 mA. El filtrado DFT garantiza
que no se generen activaciones falsas debido a ruidos armónicos
provenientes de unidades de velocidad ajustable. En caso tal de
presentarse una falla de conexión a tierra y la apertura del resistor, el
SE-330 detectará la falla por medio de mediciones del voltaje, donde
otros relevadores de detección de corriente directa serían ineficientes.
Localización de fallas en la conexión a tierra a
través de impulsos
El SE-330 tiene la capacidad de controlar un contactor de impulsos,
que se utiliza para conmutar la resistencia del NGR en un paquete
NGR compatible con impulsos eléctricos. La corriente de detección
de fallas de conexión a tierra resultante se distingue de las corrientes
de carga y el ruido, y solo indicará un flujo ascendente de la falla de
conexión, facilitando la ubicación de la falla, incluso sin alimentadores
de aislamiento o cargas de interrupción.
SERIES SE-330, SE-330HV
Monitor del resistor de conexión neutro a tierra
Diagrama de circuitos simplificado
NGR
L2
CT
L1
SERIE SE 330
ER SERIES
(Resistor de detección)
(Monitor NGR)
A
B
NÚMERO
DE PEDIDO
ALIMENTACIÓN
ELÉCTRICA COMUNICACIÓN
CONTACTO DE
ESTADO OPERATIVO
DE LA UNIDAD K4
SE-330 - X X - 0 X
SE-330
para
todas las
aplicaciones
35 kV o
menos
SE-330HV
para
aplicaciones
de 72 kV.
0=120/240
V CA/V CC
2=48 V CC
0=solo USB
1=DeviceNet
3=EtherNet
(Dual RJ45)
4=EtherNet
(Fibra SC y RJ45)
5=EtherNet
(Fibra SC dual)
6=IEC61850 Dual RJ45)
7=IEC61850
(Fibra SC y RJ45)
8=IEC61850
(Fibra SC dual)
0=Normalmente
abierto
1=Normalmente
cerrado
Nota: Para aplicaciones australianas, refiérase a la Serie SE-330AU.
Información para pedir
ACCESORIOS REQUISITOS
Resistor de detección Serie ER Requerido
Transformador de corriente Requerido
SE-IP65CVR-G Opcional
SE-MRE-600 Opcional
RK-332 Opcional
NGRM-ENC Opcional
PGA-0520 Opcional
SE-330-SMA Opcional
Littelfuse se reserva el derecho de realizar cambios de producto sin previo aviso. El material en este
documento es exacto tal como se comprobó en el momento de su publicación. Visite Littelfuse.com
para obtener información actualizada.
Resistor de detección Serie ER
Interfaz requerida entre la red eléctrica y la serie SE-330/
SE-330HV. Elimina los niveles de voltaje peligrosos en
el relé.
Transformador de corriente para falla de conexión a
tierra Serie EFCT
Detección de corriente de fallas de conexión a tierra de
alta sensibilidad (principal de 5 A).
Transformador de corriente de fallas de conexión a
tierra Serie SE-CS30
Detección de corriente de fallas de conexión a tierra de
alta sensibilidad (principal de 30 A).
Otro transformador de corriente
Para NGR de resistencia baja elija un CT principal
equivalente a la clasificación nominal NGR. Las entradas
se proporcionan para CT secundarios de 1 a 5 A.
Cubierta transparente articulada SE-IP65CVR-G
Cubierta a prueba de agua, resistente a impactos, y
protección IP65.
Accesorios
A
B
Para ver un diagrama de conexiones detallado, consulte la página siguiente.
64
Relevadores de protección
MONITOREO DE CONEXIÓN A TIERRA/RESISTENCIA DE CONEXIÓN A TIERRA
3
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/se-330, www.littelfuse.com/se-330hv
CONTROL
ENCENDIDO
ESTADO
DE LA UNIDAD
ACTIVACIÓN
POR PULSO
(SE-330
SOLAMENTE)
RESTABLECER
DE PUNTA O
POR IMPULSOS
FALLA DEL
RESISTOR
FALLA DE
CONEXIÓN
A TIERRA
+
SISTEMA DE
ENCENDIDO
NEUTRAL (X0)
R
EFCT
1 A
5 A
COMÚN
G
SALIDA
ANALÓGICA de
4-20 mA
+24 V CC
0 V
(obligatorio)
(obligatorio)
MONITOR DE RESISTOR
DE CONEXIÓN DE
NEUTRO A TIERRA
SERIE ER SERIE SE-330
FAMILIA EFCT
RESISTOR DE DETECCIÓN
TRANSFORMADOR
DE CORRIENTE
29
28
27
26
11
10
9
8
3
2
1
25
24
23
17
16
15
13
12
22
21
20
19
18
7
R 6
G
N
(K1)
(K2)
(K3)
A
B
Especificaciones
Números de dispositivo IEEE Averías de conexión a tierra (50G/N, 51G/N, 59N), relevador de bloqueo (86),
relevador de verificación (3)
Voltaje de entrada Ver información para pedir
Dimensiones H 213 mm (8,4"); A 98 mm (3,9"); P 132 mm (5,2")
Configuraciones del nivel
de disparo GF 2 a 100 % de la clasificación nominal principal CT en incrementos del 1 %
Configuraciones del tiempo
de disparo GF 0,1-10 s
Configuraciones del nivel
de captación Vn 20-2000 V CA (sistemas≤5 kV) 100-10 000 V CA (sistemas >5 kV)
Modo de funcionamiento
del contacto Con o sin control automático de protección seleccionable (K1, K2, K3)
Filtrado armónico Característica estándar
Botón de restablecimiento Característica estándar
Contactos de salida Dos Forma A y dos Forma C
Circuito por impulsos 1-3 s en incrementos de 0,2 s (SE-330 solamente)
Aprobaciones certificado de CSA, certificación UL (E340889),
CE (Unión Europea), C-Tick (Australiana)
Comunicaciones Mini USB (estándar); DeviceNet (opcional), IEC 61850 (opcional)
TCP Modbus y EtherNet/IP (opcional)
Salida analógica 4-20 mA, potenciada por enlace o automáticamente
Terminado general Característica estándar
Garantía 5 años
Montaje Panel y superficie (opcional)
Monitoreo del resistor de conexión neutro a tierra
CARACTERÍSTICAS IEEE # BENEFICIOS
Monitoreo NGR continuo 3 Detecta fallas del resistor en segundos, reduce el riesgo de sobrevoltaje transitorio, elimina el riesgo de problemas por
detección de fallas de conexión
Detección de fallas de conexión a tierra 50G/N, 51G/N, 59N Protección principal o secundaria para detectar una falla en la conexión a tierra en cualquier sistema monitoreado
Disparo ajustable (2-100 %) Elija el nivel de sensibilidad más alto sin funcionamiento fallida, y ajustable en incrementos de 1 % (configuración MEM)
Retardo del tiempo ajustable (0,1-10 s) El retardo de disparo ajustable permite una rápida protección y coordinación del sistema
Compatibilidad CT universal Permite el uso de un CT que proporciona la configuración de fallas de conexión a tierra requerida
Contactos de salida Dos Forma C (fallas de conexión a tierra, fallas del resistor), dos Forma A (Activación/Pulsos, Operativo)
Salida analógica (4-20 mA) Se conecta a un medidor opcional PGA-0520 o a un sistema de control
Salida de impulsos (SE-330 solamente) Controla el funcionamiento de un circuito de ubicación de fallas de conexión por impulsos
Registros de disparo Grabador integrado para 100 eventos (con fecha y hora) que ayuda con el diagnóstico del sistema
Filtrado armónico (DFT) Elimina las activaciones falsas debido al ruido armónico de las unidades ASD
Comunicaciones locales Puerto mini USB para ver los valores calculados, ajustar configuraciones, y verificar los registros de eventos
Registro de datos Tarjeta microSD integrada (incluida) que puede utilizarse para registro de datos a largo plazo
Comunicaciones por red
Analice remotamente los valores y registros de eventos, restablezca activaciones, y ajuste las activaciones remotas
Opciones de protocolo disponibles:
IEC 61850 - con interfaces dual RJ45, fibra SC y RJ45, o interfaz de fibra SC dual
Modbus TCP y Ethernet/IP - con interfaces dual RJ45, fibra SC y RJ45, o interfaz de fibra SC dual
DeviceNet - con interfaz CAN
Software Software de interfaz PC (SE-MON330) disponible en Littelfuse.com/RelaySoftware
Modo de funcionamiento de
contacto seleccionable
Modos de funcionamiento con control automático de protección o sin éste que permiten que la conexión se derive o reducir el
voltaje en el disyuntor o el circuito de alarmas (Activación, Averías de conexión a tierra, Relevadores de fallas en el resistor)
Modo de restablecimiento seleccionable Activador seleccionable o funcionamiento de programación automática
Pulsador de calibración Garantiza que la sensibilidad para fallas en el resistor sea la correcta
Salida de unidad en estado operativo Verifica que el SE-330 esté funcionando correctamente
Terminado general Los circuitos internos están revestidos con terminado general para proteger contra la humedad y la corrosión
Características y beneficios
VOLTAJE DEL
SISTEMA
(VOLTIOS)
RESISTOR DE CONEXIÓN NEUTRO A TIERRA RESISTOR DE DETECCIÓN NIVEL DE CAPTACIÓN DE
FALLAS DE CONEXIÓN A TIERRA
(AMPERIOS)
NIVEL DE CAPTACIÓN VN
CORRIENTE (VOLTIOS)
(AMPERIOS)
RESISTENCIA
(OHMIOS) MODELO RESISTENCIA (CONFIGURACIÓN
DE CONMUTADOR S5)
480 5 55 ER-600VC 20 kΩ 2.5 170
600 5 69 ER-600VC 20 kΩ 2.5 200
2,400 5 277 ER-5KV 20 kΩ 2.5 800
4,160 5 480 ER-5KV 20 kΩ 3 1,700
7,200 10 416 ER-15KV 100 kΩ 2 170 x 5 = 850
14,400 15 554 ER-15KV 100 kΩ 3 340 x 5 = 1.700
Valores típicos
Nota: La tabla anterior es para fines ilustrativos únicamente. Los valores reales pueden diferir según varios aspectos del sistema específico, tales como la corriente de carga capacitiva y los resultados del estudio de
coordinación.
Diagrama de conexiones
SERIES SE-330, SE-330HV
Littelfuse se reserva el derecho de realizar cambios de producto sin previo aviso. El material en este documento es exacto tal como se comprobó en el momento de su publicación. Visite Littelfuse.com para
obtener información actualizada.
65
Relevadores de protección
MONITOREO DE CONEXIÓN A TIERRA/RESISTENCIA DE CONEXIÓN A TIERRA
3
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/se-330au
SERIE SE-330AU
Monitor del resistor de neutro a tierra
Diagrama de circuitos simplificado
NER
L2
CT
L1
SERIE
SE-330AU
SERIE ER
(Resistor de detección)
(Monitor de NER) A
B
ACCESORIOS REQUISITOS
Resistor de detección Serie ER Requerido
Transformador de corriente Requerido
SE-IP65CVR-G Opcional
SE-MRE-600 Opcional
RK-332 Opcional
Especificaciones
Voltaje de entrada Ver información para pedir
Dimensiones H 213 mm (8,4"); A 98 mm (3,9"); P 132 mm (5,2")
Configuraciones del nivel
de disparo GF 0,125-30 A
Configuraciones del tiempo
de disparo GF 0,1-0,5 s
Configuraciones del nivel
de disparo Vn 20-2 000 V CA (sistemas ≤5 kV)
100-10 000 V CA (sistemas >5 kV)
Contactos de salida Dos Forma A y dos Forma C
Modo de funcionamiento Control automático de protección
Filtrado armónico Característica estándar
Restablecimiento Pulsador de panel frontal y entrada remota
Aprobaciones C-Tick (Australiana), CE
Comunicaciones Mini USB (estándar); DeviceNet (opcional), IEC 61850
(opcional), TCP Modbus y EtherNet/IP (opcional)
Salida analógica 4-20 mA, potenciada por enlace o automáticamente
Terminado general Característica estándar
Garantía 5 años
Montaje Panel y superficie (opcional)
Monitoreo del resistor de neutro a tierra
Descripción
La serie SE-330AU es un relé de monitoreo de resistor a tierra y fallas
de conexión a tierra avanzado para transformadores y generadores de
voltaje bajo y medio. Monitorea la corriente neutra, voltaje de neutro a
tierra, y resistencia de neutro a tierra. Proporciona monitoreo continuo
de la ruta neutro a tierra para verificar que el resistor de neutro a tierra
(NER) está intacto. Este aspecto es de gran importancia, ya que un
NER abierto interpreta problemas en la protección contra fallas de
conexión y detecta la corriente y esto podría generar una falsa
determinación de que el sistema está funcionando correctamente.
La función de fallas de conexión a tierra del SE-330AU cumple con la
directriz AS/NZS 2081.3:2002. Las salidas incluyen cuatro salidas de
relé y una salida analógica. Incluye un puerto mini USB para ver los
valores calculados, ajustar configuraciones y verificar los registros de
eventos. Tarjeta microSD integrada que puede utilizarse para registro
de datos a largo plazo. Opciones de comunicaciones por red
disponibles. Para aplicaciones que no requieren de aprobación
AS/NZS 2081, consulte las Series SE-330 o SE-330HV.
Monitoreo del resistor
El SE-330AU combina los valores medidos de resistencia, corriente, y
voltaje para verificar constantemente que el NER esté intacto. Tiene
capacidad de detectar fallas en un resistor independientemente de si
hay fallas o no en la conexión a tierra. Los resistores de detección se
adaptan al voltaje del sistema y se utilizan para monitorear NGR en
sistemas de hasta 35 kV.
Monitoreo de fallas de conexión a tierra
El SE-330AU utiliza un transformador principal de 5 o 30 A para
proporcionar un rango nominal de captación de 0,125-5 A o 0,75-30 A
para cumplir con la directriz AS/NZS 2081.3:2002. El filtrado DFT
garantiza que no se generen activaciones falsas debido a ruidos
armónicos provenientes de unidades de velocidad ajustable. Incorpora
detección para CT abierto.
Resistor de detección Serie ER
Interfaz requerida entre la red eléctrica y la serie SE330AU. Elimina los niveles de voltaje peligrosos en el relé.
Transformador de corriente para falla de conexión a
tierra Serie EFCT
Detección de corriente de fallas de conexión a tierra de
alta sensibilidad (principal de 5 A).
Transformador de corriente de fallas de conexión a
tierra Serie SE-CS30
Detección de corriente de fallas de conexión a tierra de
alta sensibilidad (principal de 30 A).
Accesorios
A
B
NÚMERO DE
PARTE
ALIMENTACIÓN
ELÉCTRICA COMUNICACIÓN
CONTACTO DE
ESTADO OPERATIVO
DE LA UNIDAD K4
SE-330AU - X X - 0 X
SE-330AU
para todas las
aplicaciones
35 kV o
menos
SE-330HV
para
aplicaciones
de 72 kV.
0=120/240
V CA/V CC
2=48 V CC
0=solo USB
1=DeviceNet
3=EtherNet
(Dual RJ45)
4=EtherNet
(Fibra SC y RJ45)
5=EtherNet
(Fibra SC dual)
6=IEC61850
(Dual RJ45)
7=IEC61850
(Fibra SC y RJ45)
8=IEC61850
(Fibra SC dual)
0=Normalmente
abierto
1=Normalmente
cerrado
Información para pedir
66
Relevadores de protección
MONITOREO DE CONEXIÓN A TIERRA/RESISTENCIA DE CONEXIÓN A TIERRA
3
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ngr
Sistema de resistor de conexión de neutro a tierra
SERIE NGR
Paquete de resistencia de conexión de neutro
a tierra
Información para pedir
Para obtener información sobre los paquetes NGR
adaptados, complete y envíe el formulario disponible en
www.littelfuse.com/NGR-Quote
Para obtener información acerca del panel de control del monitor de NGR
NGRM-ENC, consulte el apartado Accesorios.
Descripción
Los resistores de conexión de neutro a tierra (NGR) se utilizan para
conectar a tierra redes eléctricas incorporando un resistor entre el
sistema de neutro y tierra. Esto reduce la corriente de fallas de conexión
potenciales a un valor predeterminado.
Un sistema de conexión a tierra de resistencia correctamente
implementado favorece tanto a sistemas con conexión directa a tierra
como a aquellos sistemas no conectados. Debido a que el sistema
está conectado a tierra, no se presentan sobrevoltajes transitorios y
la corriente de fallas de conexión a tierra puede fluir permitiéndole ser
detectada y calculada. Esto además reduce significativamente los daños
ocasionados por fallas de conexión en sistemas con conexión directa
a tierra. La corriente de fallas de conexión a tierra limitante elimina
los peligros de arco eléctrico asociados con las fallas de conexión
iniciales. Sin embargo, es necesario eliminar los peligros asociados con
la fallas eléctricas fase a fase utilizando relevadores de arco eléctrico,
relevadores de protección para alimentadores, fusibles limitadores de
corriente y otros métodos. Los relevadores contra fallas de conexión
a tierra (tales como el SE-701) pueden utilizarse en alimentadores
para brindar coordinación selectiva y la capacidad de localizar o aislar
rápidamente las fallas. Los sistemas por impulsos aplican también ya
que son otro método de ubicación de fallas conocido.
Aplicaciones
La conexión a tierra de resistencias se aplica generalmente en
transformadores y generadores cuando la seguridad y la continuidad
del servicio es la prioridad. Un alimentador defectuoso puede continuar
operando hasta que sea seguro reparar la falla, de conformidad con el
código eléctrico nacional aplicable.
Beneficios
g Elimina los incidentes por arco eléctrico y de conexión de fase a tierra
g Elimina los sobrevoltajes transitorios
g Reduce los daños por fallas en puntos de conexión
g Permite la continuidad del servicio durante una falla de conexión a tierra
g La corriente de fallas de conexión a tierra por impulsos opcional ayuda
a la localización de fallas
Características
g El resistor de detección Serie ER y el transformador de corriente para el
monitoreo NGR vienen preinstalados al interior de la carcasa
g Puede acoplarse con un transformador en zigzag para conexión a tierra
de resistencias en sistemas de conexión en triángulo sin conexión
a tierra, y una estación sistema alimentada por generadores, o un
sistema con una línea neutra inaccesible
g El monitor NGR SE-325 o SE-330 puede proporcionar monitoreo
NGR continuo y protección contra fallas de conexión a tierra; las fallas
NGR establecerán todos los métodos de protección contra fallas de
conexión por detección de corriente como inoperativos
g Los elementos del resistor en acero inoxidable previenen la corrosión
g Disponibilidad de resistores de alta capacidad nominal continua y de
corto plazo
67
Relevadores de protección
MONITOREO DE CONEXIÓN A TIERRA/RESISTENCIA DE CONEXIÓN A TIERRA
3
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ngrm-enc
Monitoreo del resistor de conexión neutro a tierra
Descripción
El monitor de resistor de conexión neutro a tierra (NGR) sellado
serie NGRM-ENC es una unidad Tipo 4X que acopla un monitor de
resistor de neutro a tierra serie Startco SE-325 o SE-330 de Littelfuse
y accesorios opcionales que incluyen un transformador de control de
alimentación (CPT) 480/600 V, indicación de fase que presenta fallas
(FPI; integrado con un indicador de voltaje entre fases y detección de
fallas de conexión a tierra EL3100), medidor de panel para filtraciones
de conexión a tierra, control por impulsos, y opciones de montaje.
Fusión adaptada incluida y las conexiones de campo enlazadas en
bloques de terminal.
SERIE NGRM-ENC
NGRM-ENC
NGR
L2
CT
L1
SERIE
SE-330
SERIE ER
(Resistor de detección)
(Monitor de NGR)
EL3100
NGRM-ENC
(SE-330 con indicación de voltaje conforme se muestra en la imagen)
DN
DA
DB
DC
Ensamble de NGR
(se pide por separado)
Diagrama de circuitos simplificado
Información para pedir
Las opciones a continuación están disponibles con un plazo de entrega menor:
NUMERO DE PARTE OPCIÓN DE RELÉ DE
PROTECCIÓN
OPCIÓN DE MONTAJE
DE MONITOR NGR
OPCIÓN DE CONTROL
POR IMPULSOS Y
AMPERÍMETRO
COMUNICACIONES
OPCIÓN DE TRANSFORMADOR
PARA CONTROL DE
ALIMENTACIÓN
NGRM-ENC-000-01 SE-325 Montaje en superficie Ninguno Ninguno CPT
NGRM-ENC-200-01 SE-330 (K4=NO) Montaje en superficie Ninguno Ninguno CPT
NGRM-ENC-201-01 SE-330 (K4=NO) Montaje en panel Ninguno Ninguno CPT
NGRM-ENC-201-11 SE-330 (K4=NO) Montaje en panel Amperímetro Ninguno CPT
NGRM-ENC-230-01 SE-330 (K4=NO) Montaje en superficie Ninguno Puertos de Ethernet/2 RJ45 CPT
NGRM-ENC-231-01 SE-330 (K4=NO) Montaje en panel Ninguno Puertos de Ethernet/2 RJ45 CPT
Opciones
El monitor de resistor de conexión neutro a tierra SE-325
mide la corriente y el voltaje en un transformador o
generador de conexión neutro a tierra y la continuidad del
resistor de neutro a tierra.
Monitor de resistor de conexión neutro a tierra SE-330
Relé de monitoreo por resistor de conexión neutro a tierra
y protección de fallas de conexión avanzado que mide la
corriente neutra, el voltaje neutro a tierra, y la resistencia
de neutro a tierra.
Indicador de voltaje entre fases y fallas de conexión a
tierra EL3100
Los LED integrados en el panel indican la fase con fallas
de conexión a tierra.
Medidor de panel
El medidor integrado en el panel muestra la corriente de
filtración a tierra como un porcentaje de la clasificación
primaria CT para fallas de conexión a tierra.
Restablecimiento e indicación remotos RK-332/RK-302
Indicación remota integrada en el panel y ensambles
de restablecimiento incluidos con la serie SE-325 y
configuraciones montadas en superficie para serie SE-330.
68
Relevadores de protección
MONITOREO DE CONEXIÓN A TIERRA/RESISTENCIA DE CONEXIÓN A TIERRA
3
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ngrm-enc
Especificaciones
Carcasa Poliéster, con bloqueo. Opciones de montaje en panel
SE-330 clasificadas con IP65. Todas las demás opciones
se clasifican como Tipo 4X.
Dimensiones H 454 mm (17,9"); A 406 mm (16");
P 264 mm (10,4")
Se requiere de espacio libre para abrir
SE-IP65CVR-G 112 mm (4,4")
Aprobaciones CCSAUS
Garantía 1 año
Información para pedir
OPCIÓN DE RELÉ DE
SEGURIDAD
OPCIÓN DE
COMUNICACIONES
POR RED
OPCIÓN DE MONTAJE
DE MONITOR NGR
OPCIÓN DE CONTROL
POR IMPULSOS Y
AMPERÍMETRO
OPCIÓN DE
TRANSFORMADOR PARA
CONTROL DE ALIMENTACIÓN
NGRM-ENC- X X X – X X
0=SE-325
1=SE-325 e indicación de voltaje
2=SE-330 (N.O. K4)
3=SE-330 (N.O. K4) e indicación
de voltaje
4=SE-330 (N.C. K4)
5=SE-330 (N.C. K4) e indicación
de voltaje
6=SE-330HV (N.O. K4)
7=SE-330HV (N.O. K4) e indicación
de voltaje
8=SE-330HV (N.C. K4)
9=SE-330HV (N.C. K4) e indicación
de voltaje
0=Comunicaciones fuera de red
1=DeviceNet(2)
3=Ethernet, dual RJ45(2)
4=Ethernet, 1 RJ45 y 1 de fibra(2)
5=Ethernet, fibra dual(2)
6=IEC 61850, dual RJ45(2)
7=IEC 61850, 1 RJ45 y 1 de fibra(2)
8=IEC 61850, fibra dual(2)
0=Montaje en superficie
Monitor NGR(4)
1=Montaje en panel
Monitor NGR(5)
0=Sin amperímetro
1=Medidor en panel de
filtración de conexión a
tierra(2)
2=Medidor en panel de
filtración de conexión a tierra
y conmutador por impulsos(3)
0=Sin CPT
1=480/600-V CPT(1)
Monitoreo del resistor de conexión neutro a tierra
SERIE NGRM-ENC
Nota (1) - Incluye fusibles, (2) - Modelos SE-330 solamente, (3) - Modelos SE-330 solamente,
excluyendo los modelos SE-330HV, (4) - Incluye indicación y restablecimiento de montaje en
panel, y conector USB para modelos SE-330, (5) - Modelos SE-330 solamente; incluye cubierta
transparente articulada IP65
Relevadores de protección
69
4PROTECCIÓN DEL ALIMENTADOR
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols
Para obtener más información…
y para descargar fichas técnicas y manuales sobre nuestros
relevadores de protección para alimentadores, haga clic en
Technical Resources en Littelfuse.com/FeederProtection
PROTECCIÓN DEL ALIMENTADOR
Protege los circuitos del alimentador de sobrecorrientes, fallas de conexión a tierra,
pérdida de fase y otras condiciones perjudiciales en aplicaciones y procesos críticos.
Proporcionan datos fundamentales para mantenimiento preventivo y predictivo, que
aumenta la vida útil del equipo, mejora la seguridad y maximiza la eficiencia.
Serie FPU-32 Unidad de protección para alimentadores........................70
Serie FPS Sistema de protección para alimentadores......................71
Relevadores de protección
70
4 PROTECCIÓN DEL ALIMENTADOR
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/fpu-32
SERIE FPU-32 (PGR-7200)
Unidad de protección del alimentador
Descripción
La unidad de protección del alimentador FPU-32 brinda funciones de
protección integrada, medición y registro de datos. Es una excelente
opción para reconversión y actualización de relevadores antiguos
gracias a su tamaño compacto y capacidad de utilizar CT existentes.
La FPU-32 se utiliza para proteger alimentadores de distribución en
instalaciones de tratamiento de aguas residuales, productos químicos,
petróleo, procesamiento y fabricación.
MPU-CIM
(Módulo de entrada de corriente)
(Unidad de protección
del alimentador)
FPU-32
CT DE FASE
CT DE FASE
CT DE FASE GF CT
L2
L1
NOTA: La FPU-32 consta de una Unidad de Protección del Alimentador
(imagen anterior) y un Módulo de Entrada de Corriente MPU-CIM (sin
imagen de ref.).
NÚMERO DE PEDIDO COMUNICACIONES
FPU-32-00-00 TIA-232
FPU-32-01-00 TIA-232 y RS-485
FPU-32-02-00 TIA-232 y DeviceNet™
FPU-32-04-00 TIA-232 y Ethernet
NOTA: Se requiere una de las siguientes unidades: Módulo de entrada de corriente MPUCIM-00-00, o Módulo de entrada de corriente MPU-CTI-RT-00 con terminales esféricos.
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Curvas de protección contra
sobrecorriente IEC y IEEE
Configuraciones de tiempo inverso y preciso para
coordinación de sistemas; previene fallas catastróficas
Dos grupos de valores de
ajuste
Crea configuraciones distintivas para fines de
mantenimiento o para dos cargas diferentes
Modo de sobrecorriente
reducida
Configuración de modo de mantenimiento para reducir el
riesgo de peligros por arco eléctrico
Registro de datos Grabadora de 100 eventos integrada y registro de datos remoto
que ayudan en la realización de diagnósticos del sistema
Sobrecarga Protección térmica para cargas conectadas
Pérdida de fase/Fase inversa
(corriente) Detecta condiciones de suministro con fallas
Desbalance (corriente) Previene el sobrecalentamiento debido a fases no
balanceadas
Comunicaciones Análisis remoto de los valores calculados, registros de
eventos y restablecimiento de activaciones
Características y beneficios
A B
ACCESORIOS REQUISITOS
CT de fase Recomendado
CT de fallas de conexión a tierra Opcional
MPU-16A-Y92A-96N Opcional
Especificaciones
Funciones de
protección (IEEE #)
Voltaje de entrada 65-265 V CA, 30 VA; 80-275 V CC, 25 W
Tiempo de disparo 800 ms a 120 V CA
Tiempo de ajuste
de la protección 100 ms, mínimo
Fuente de 24 V CC 400 mA, máximo
Mediciones CA RMS y DFT reales, ciclo/muestra pico de 32 y secuencia básica
negativa y positiva
Frecuencia 50, 60 Hz
Contactos de salida Tres Forma C
Aprobaciones Certificado de CSA, CE, C-Tick (Australiana), reconocido por UL
Comunicaciones TIA-232 (estándar); TIA-485, DeviceNet™, Ethernet (opcional)
Salida analógica 4-20 mA, programable
Terminado general Característica estándar
Garantía 10 años
Montaje
(Unidad de control) Panel (estándar)
Superficie (con kit de convertidor MPU-32-SMK)
(Módulo de entrada
de corriente) DIN, Superficie
Transformadores de corriente de fase
Los transformadores de corriente de fase son
necesarios para detectar las corrientes de fase.
Transformador de fallas de conexión a tierra
El transformador de corriente de secuencia cero
detecta la corriente con fallas de conexión a tierra.
Disponible con clasificaciones nominales de 5 A y
30 A para captación de nivel bajo.
B
Accesorios
A
Sobrecarga (49, 51)
Secuencia de fase (46)
Desbalance (46)
Pérdida de fase (46)
Sobrecorriente a plazo definido (50, 51)
Sobrecorriente a plazo progresivo (50, 51)
Averías de conexión a tierra (50G/N, 51G/N)
Temperatura de RTD/PTC (49)
Protección del alimentador–Estándar
Relevadores de protección
71
4PROTECCIÓN DEL ALIMENTADOR
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/fps
Protección del alimentador–Avanzada
SERIE FPS
Sistema de protección del alimentador
1
2
Descripción
El Sistema de protección del alimentador FPS monitorea el voltaje y
la corriente para proporcionar un paquete integral de 17 funciones de
protección. El FPS es un sistema modular con funciones de protección
integrada, control de interruptores, medición, y registro de datos.
1 Interfaz del operador (FPS-OPI)
g Pantalla amplia, luminosa y con filtro fluorescente de vacío de 4 x 20
g Muestra los valores calculados
g Accede a los puntos de ajuste
g Potenciado por unidad de control
g Montaje en panel o se integra directamente en la unidad de control
g Montaje remoto (longitud de enlace máxima de 1,2 km o 4000 ft)
g Tamaño DIN 1/2
g Ubicación peligrosa certificada
2 Unidad de control (FPS-CTU)
g Entradas de corriente—Transformadores de corriente
secundario de fase de 5 A o 1 A
g Entradas de voltaje—hasta de 600 V sin PT
g Entrada de filtración de conexión a tierra—Transformador
sensible o secundario de 5 A o 1 A
g 8 entradas digitales, 5 salidas de relevador, 1 entrada y 1
salida analógicas
g Alimentación de 24-V CC para módulos OPI y RTD, y para
entradas digitales
g Entrada para código de tiempo IRIG-B
g Tamaño DIN 1/2, montaje en superficie
g Comunicaciones por red RS-485 (Estándar)
g Comunicaciones DeviceNet™, Profibus® o Ethernet disponibles
Transformadores de corriente de fase
Los transformadores de corriente de fase son
necesarios para detectar las corrientes de fase.
Transformador de corriente para fallas de
conexión a tierra
El transformador de corriente de secuencia cero
detecta la corriente con fallas de conexión a tierra.
Disponible con clasificaciones nominales de 5 A y
30 A para captación de nivel bajo.
Módulo de entrada de temperatura MPS-RTD
El módulo opcional proporciona 8 entradas para
conectar unidades Pt100, Ni100, Ni120, y Cu10 RTD.
Cubierta SE-IP65CVR-M
Cubierta transparente con empaque opcional para
acceso limitado y protección IP65 para un módulo de
interfaz del operador.
B
C
Accesorios
A
ACCESORIOS REQUISITOS
FPS-OPI-01-00 Recomendado
SE-IP65CVR-M Opcional
CT de fase Requerido
CT de fallas de conexión a tierra Recomendado
MPS-RTD-01-00 Opcional
NÚMERO DE PEDIDO COMUNICACIONES
FPS-CTU-01-00 RS-485
FPS-CTU-02-00 RS-485 y DeviceNet™
FPS-CTU-03-00 RS-485 y Profibus®
FPS-CTU-04-00 RS-485 y Ethernet
Información para pedir
Diagrama de circuitos simplificado
CT DE FASE
CT DE FASE
CT DE FASE GF CT
L2
FPS-CTU L1
FPS-OPI
(Unidad de control)
(Interfaz del operador)
1
2
A B
Relevadores de protección
72
4 PROTECCIÓN DEL ALIMENTADOR
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/fps
Protección del alimentador–Avanzada
Diagrama de conexiones
VOLTAJES
DE FASE
FPS-CTU
UNIDAD DE CONTROL
SALIDAS DEL
RELEVADOR
MÓDULO DE E/S
ENTRADAS
DIGITALES
ENTRADA
ANALÓGICA
DE 4-20 mA
+
SALIDA
ANALÓGICA
4-20 mA
+
39 40
53 52
43 51 ...... 5 16 ...... 1 2
20 17 60 56 ...... 33 22
CONTROL DE ALIMENTACIÓN
RS-485
35 37 ......
30 29 27 26 23 22
TRANSFORMADORES DE
CORRIENTE DE FASE
TRANSFORMADOR
DE CORRIENTE PARA
FALLAS DE CONEXIÓN
A TIERRA
INTERFAZ DEL
OPERADOR
FPS-OPI
(Recomendado) (obligatorio)
(Recomendado)
MÓDULO RTD
MPS-RTD
(opcional)
A B
C
1
2
Especificaciones
Funciones de protección
(Números de dispositivo IEEE)
Voltaje de entrada 65-265 V CA, 25 VA; 80-275 V CC, 25 W
Tiempo de disparo 800 ms a 120 V CA
Tiempo de ajuste
de la protección 100 ms, mínimo
Fuente de 24 V CC 100 mA, máximo
Mediciones CA RMS y DFT reales, ciclo/muestra pico de 16 y secuencia
básica negativa y positiva
Frecuencia 50 o 60 Hz
Entradas Corriente de fase, corriente de filtración de conexión a
tierra, voltaje de fase, 7 digitales, 1 analógico
Contactos de salida 5 contactos — Ver manual del producto
Aprobaciones Certificado por CSA, C-Tick (Australiana)
Comunicaciones Allen-Bradley® DFI y Modbus® RTU (Estándar);
DeviceNet™, Profibus®, Ethernet (opcional)
Terminado general Característica estándar
Garantía 10 años
Montaje:
Unidad de control Superficie
Interfaz del operador Montaje en panel o unidad de control
Sobrecarga (49, 51)
Potencia inversa (corriente) (46)
Sobrefrecuencia (81)
Sobrecorriente (50, 51)
Baja frecuencia (81)
Averías de conexión a tierra
(50G/N, 51G/N)
Desbalance (voltaje) (47)
Temperatura de RTD (38, 49)
Desbalance (corriente) (46)
Pérdida de fase (voltaje) (47)
Sobrevoltaje (59)
Pérdida de fase (corriente) (46)
Bajo voltaje (27)
Potencia inversa (voltaje) (47)
Factor de Potencia (55)
Características y beneficios
CARACTERÍSTICAS IEEE # BENEFICIOS
Sobrecarga 49, 51 La sobrecorriente a largo plazo brinda protección térmica para cargas o alimentadores
Sobrecorriente a plazo progresivo 50, 51 Coordinación mediante curvas IEEE e IEC
Sobrecorriente a plazo definido 50, 51 Sobrecorriente instantánea para detectar fallas catastróficas
Desbalance de corriente/
Pérdida de fase/Fase inversa 46 Detecta una fase abierta o de alta impedancia
Averías de conexión a tierra 50G/N, 51G/N Tiempo definido o inverso. Detección temprana de fallas del aislamiento.
Temperatura RTD 38, 49 Protección opcional (Módulo MPS-RTD) para monitoreo de temperatura en carga
Sobrevoltaje 59 Limita la tensión al aislamiento
Bajo voltaje 27 Detecta una condición de caída de tensión peligrosa
Desbalance de voltaje 47 Detecta voltaje de alimentación inestable
Dos grupos de ajustes Minimiza los riesgos por arco eléctrico durante el mantenimiento
Control de interruptores automáticos Permite un funcionamiento local y remoto; reduce el conteo de componentes
Medición Muestra los parámetros calculados y procesados
Registro de datos Grabadora de 64 eventos integrada que ayuda en la realización de diagnósticos del sistema
Comunicaciones Análisis remoto de los valores calculados, registros de eventos y restablecimiento de activaciones
Terminado general Los circuitos internos están revestidos a conformidad para proteger contra la humedad y la corrosión
SERIE FPS
Sistema de protección del alimentador
73
5PROTECCIÓN CONTRA ARCO ELÉCTRICO
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols
Para obtener más información…
y poder descargar nuestras fichas técnicas
acerca de consideraciones clave para elegir
un relevador de arco eléctrico o nuestro
manual Reducción de la energía por arco
eléctrico, visite Littelfuse.com/ArcFlash
PROTECCIÓN CONTRA
ARCO ELÉCTRICO
Detecta rápidamente incidentes potenciales por arco eléctrico y envía una señal de
disparo para interrumpir la alimentación antes de que ocurran daños considerables.
D0920 Unidad de detección de arco eléctrico.......................74
Serie PGR-8800 Relevador de arco eléctrico........................................75
Serie AF0500 Relevador de arco eléctrico........................................77
Serie AF0100 Relevador de arco eléctrico........................................79
Serie A0220 Sensor de punto para detección de arco eléctrico ....80
PGA-1100 Diodo lógico................................................................81
74
5 PROTECCIÓN CONTRA ARCO ELÉCTRICO
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/d0920
D0920 UNIDAD DE DETECCIÓN DE ARCO ELÉCTRICO
Unidad de detección de arco eléctrico
Diagrama de instalación
Descripción
El relevador de arco eléctrico D0920 proporciona una solución práctica
y económica para el monitoreo de arco eléctrico. Pueden conectarse
directamente dos sensores de luz a un relevador.
Sensores de luz que reaccionan a la luz y tienen una zona de detección
de 180°. Los sensores cuentan con un cable de 10 o 15 m. Se
recomienda 1 o 2 sensores por compartimiento o gaveta.
Especificaciones
Suministro de Voltaje a 230 V CA +15, -30 %
Salida de tiristor 325 V CC de capacitor cargado, energía nominal de 3,5 J
Sensibilidad Ajustable 2 a 24 klux
Número de sensores Máx. 2
Tiempo de respuesta Menos de 1 ms
Consumo de energía 3,5 VA
Temperatura ambiente –25 °C a 70 °C
Dimensiones H 90 mm (3,5"); A 105 mm (4,1"); P 61 mm (2,4")
Certificación CE, CCC
NÚMERO DE PEDIDO DESCRIPCIÓN
D0920.0060
230 V CA +15, -30 %, que permanece cargado luego
de activarse, interruptor móvil en vez de interruptor
de clave, botón de restablecimiento electrónico
en vez de botón de restablecimiento mecánico,
aprobado por CCC
Información para pedir
CARACTERÍSTICAS BENEFICIOS
Módulo compacto Se adapta en diversos rangos de aplicaciones de arco eléctrico
Tiempo de disparo
<1 ms
Limita los daños por arco eléctrico y el riesgo de causar heridas
personales
Dos longitudes de
cable para sensor
óptico
Sensores de punto con cable de 10 o 15 m
Entradas para dos
sensores
Relevador de arco eléctrico individual que puede monitorear
2 sensores
Sensibilidad a la luz
ajustable
Permite un funcionamiento en entornos luminosos y máxima
sensibilidad en ambientes oscuros
Modo de servicio Permite realizar pruebas de sensor y relevador sin sistemas de
disparo
Características y beneficios
ACCESORIOS REQUISITOS
Cable detector A0033.0010
2 x 0,25 mm2
con pantalla. 100 m Opcional
Detector de arco tipo V A0220.0010 ; cable de 10 m Requerido: al menos un sensor por
Detector de arco tipo V A0220.0020; cable de 15 m zona monitoreada
Unidad de lógica de diodos PGA-1100/D1100 Opcional
Sensores de luz A0220
El sensor de luz en zona visible detecta un arco
eléctrico desde 3 kA dentro de una media esfera de
2 m de diámetro. Disponible con un cable de 10 o 15 m.
Unidad lógica de diodos PGA-1100/D1100
Para activar interruptores automáticos con múltiples
relevadores D0920
Accesorios
A
Instale los sensores en zona
visible para capturar posibles fallas
de arco eléctrico.
Monitoreo de arco eléctrico
75
5PROTECCIÓN CONTRA ARCO ELÉCTRICO
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pgr-8800
Descripción
La serie PGR-8800 es un relevador basado en un microprocesador
que limita los daños por fallas de arco eléctrico detectando la luz
proveniente de un arco eléctrico y activándose rápidamente. Las
entradas del transformador de corriente de fase se proporcionan
como protección de arco eléctrico por corriente restringida y, una vez
instaladas, se puede activar una función programable de sobrecorriente
por tiempo definido. Un sensor óptico en el PGR-8800 y un nivel
de disparo ajustable reducen la posibilidad de interrupciones no
deseadas, definiendo un límite para la luz de ambiente. Los sensores,
las entradas y las conexiones son monitoreadas para garantizar un
funcionamiento con control automático de protección. Un circuito de
disparo de estado sólido secundario proporciona una ruta de disparo
redundante. Se utiliza un puerto USB para configuración y acceso a
registros de eventos y gráficos.
Sensores ópticos
El PGR-8800 acepta tanto sensores ópticos PGA-LS10 como
PGA-LS20/PGA-LS30, diseñados para captar luces en un amplio rango
y con alta sensibilidad. Para una detección de fallas eficiente, el sensor
LED y el panel frontal indican el estado del sensor y qué sensor
presenta fallas de arco eléctrico.
Disposición del sensor
El relevador de arco eléctrico PGR-8800 y los sensores son instalados
con facilidad en proyectos de actualización y nuevos mecanismos
de control que requieren de poca o nula reconfiguración. Incluso los
sistemas detallados con múltiples fuentes de alimentación tardan
minutos en configurarse por medio de software de interfaz USB
integrado del relevador.
En general, se recomienda instalar 1 o 2 sensores por cubículo
para cubrir todas las barras colectoras verticales y horizontales, los
compartimientos de interruptores automáticos, las gavetas, y cualquier
lugar donde exista la posibilidad de fallas de arco eléctrico. Instalar un
sensor de fibra óptica en los armarios eléctricos y en áreas donde la
cobertura del sensor de puntos es incierta conlleva a una cobertura
completa y a un mayor nivel de redundancia. Incluso si la política
es trabajar solamente con sistemas sin energía, todas las áreas
de mantenimiento deberían ser monitoreadas para prevenir daños
potenciales y costos adicionales. Al menos un sensor debería tener
la capacidad de identificar una falla de arco eléctrico si una persona
bloquea los otros sensores.
Diagrama de circuitos simplificado
PGA-LS10
(Sensor de puntos)
PGA-LS20/
PGA-LS30
(Sensor de bra óptica)
PGA-1100
(Unidad lógica de diodos)
(Opcional)
Batería de seguridad
de 24 V CC
(opcional)
(Relevador de seguridad de arco eléctrico)
PGR-8800
Trip
CT DE FASE SECUNDARIOS DE 5 A (Recomendado)
L2
L1
A
B
C
A
B
SERIE PGR-8800 (D1000)
Relevador de arco eléctrico
C
D
*Se requiere de al menos un sensor. Sin embargo, el número exacto de sensores para una
cobertura adecuada depende de la aplicación.
D D D
Interruptor
automático local
Para ver un diagrama de conexiones detallado, consulte la página siguiente.
Información para pedir
NÚMERO DE PEDIDO DESCRIPCIÓN
PGR-8800-00 (UL, CE, CSA, RCM) Relevador de arco eléctrico
PGR-8800-00-CC (UL, CE, CSA, RCM) Relevador de arco eléctrico,
Terminado general
ACCESORIOS REQUISITOS
PGA-LS10 Requerido*
PGA-LS20, PGA-LS30 Requerido*
PGA-1100 Opcional
Transformador de corriente Recomendado
Monitoreo de arco eléctrico
76
5 PROTECCIÓN CONTRA ARCO ELÉCTRICO
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pgr-8800
Diagrama de conexiones
CARACTERÍSTICAS BENEFICIOS
Tiempo de disparo de arco eléctrico <1 ms Limita los daños por arco eléctrico y el riesgo de causar accidentes con el personal
Sensores múltiples (hasta 24) Módulo individual con capacidad para monitorear 6 sensores. Se pueden conectar hasta 4 unidades PGR-8800 en un sistema
Sistema de control automático de protección Monitoreo continuo de sensores ópticos y entradas que garantizan la protección
Circuito de disparo redundante Circuito de detección de arco eléctrico de seguridad en estado sólido que añade otra fase de seguridad
Sensibilidad a la luz ajustable Permite un funcionamiento en entornos luminosos y máxima sensibilidad en ambientes oscuros
Indicación LED (en la unidad y en cada sensor) 18 LED que indican el estado al instante para módulos y estado de E/S
Detección de corriente Entradas de CT de fase que brindan protección contra sobrecorriente y previenen activaciones no deseadas
Detección óptica Sensores de punto y fibra óptica que proporcionan una extensa área de detección con indicación de estado y disparo del sensor
Entradas digitales (6) Dos por cada uno: disparo remoto, inhibidor y entradas de restablecimiento
Modo de servicio Permite realizar pruebas sin sistemas de disparo
Contactor de bobina de disparo Estado sólido 24-300 V CC/24-300 V CA IGBT
Contactos de indicación Salidas de estado y Forma C
Interfaz USB El software de configuración y registro de datos utiliza una interfaz USB sin controladores ni instalación de software adicional
Sensor integrado Puede utilizarse en sistemas de un solo sensor, como un séptimo sensor y para calibración
Alimentación eléctrica universal/Unidad de
protección de la batería
Compatible con alimentación eléctrica de 100-240 V CA, 14-48 V CC o 110-250 V CC. Capacidad de cargar y utilizar una batería externa de 24 V CC
provista por el usuario
Registro de datos Grabadora de eventos integrada que ayuda en la realización de diagnósticos del sistema
Modbus Análisis remoto de los valores calculados, registros de eventos y restablecimiento de activaciones
Activación de flujo ascendente Capacidad para activar el dispositivo de flujo ascendente si el interruptor no identifica la falla
Características y beneficios
SERIE PGR-8800 (D1000)
1
31 36 37 38 39 45 46 47 48 49 50 51 52 53 54 55 56 57 59 60
4 ........ 5 8 ........ 9 12 ........ 13 16 ........ 17 20 ........ 21 24 ........
............. .....................
25 26 27 28 29 30
ESTADO ESTADO ESTADO
BOBINA DE
ACTIVACIÓN
SERVICIO ACTIVADO
ENLACE
EN LÍNEA
+ –
CONTROL DE
ALIMENTACIÓN
y BATERÍA
ENTRADAS
DIGITALES
RELEVADOR DE ARCO ELÉCTRICO
SERIE PGR-8800
RELEVADOR DE
ARCO ELÉCTRICO
PGR-8800
(opcional)
UNIDAD LÓGICA
DE DIODOS
PGA-1100
(opcional)
RELEVADOR DE
ARCO ELÉCTRICO
PGR-8800
(opcional)
RELEVADOR DE
ARCO ELÉCTRICO
PGR-8800
(opcional)
CT DE FASE
(recomendado)
CT DE FASE
(recomendado)
CT DE FASE
(recomendado)
PGA-LS10
PGA-LS20 o bien, PGA-LS30
SENSOR
ÓPTICO
PGA-LS10
PGA-LS20 o bien, PGA-LS30
SENSOR
ÓPTICO
PGA-LS10
PGA-LS20 o bien, PGA-LS30
SENSOR
ÓPTICO
PGA-LS10
PGA-LS20 o bien, PGA-LS30
SENSOR
ÓPTICO
PGA-LS10
PGA-LS20 o bien, PGA-LS30
SENSOR
ÓPTICO
PGA-LS10
PGA-LS20 o bien, PGA-LS30
SENSOR
ÓPTICO
Littelfuse se reserva el derecho de realizar cambios de producto sin previo aviso. El material en este documento es exacto tal como se comprobó en el momento de su publicación. Visite Littelfuse.com para
obtener información actualizada.
NOTA (1) - Comuníquese con Littelfuse para conocer los voltajes de la bobina de disparo superiores a 300 V CC/V CA.
Especificaciones
Números de dispositivo IEEE Sobrecorriente (50), arco eléctrico (AFD)
Voltaje de entrada 100-240 V CA, 14-48 V CC, y 110-250 V CC
Dimensiones H 130 mm (5,1"); A 200 mm (7,9"); P 54 mm (2,1")
Configuraciones de
disparo óptico 9-25 klux, 800 μs-20 s
Configuración de disparo
de corriente (A) Programable
Modo de indicación del contacto Control automático de protección
Voltaje de bobina de disparo(1) 24-300 V CC, 24-300 V CA
Modo de disparo de contacto
de bobina Con o sin control automático de protección seleccionable
Circuito de disparo redundante Característica estándar
Monitoreo de entrada Característica estándar
Interfaz USB Característica estándar
Activación, restablecimiento,
Botones de servicio Característica estándar
Sistema expandible Conecta hasta 4 unidades PGR-8800
Garantía 5 años
Montaje Superficie, DIN (con fijaciones de adaptador D0050)
Aprobaciones Tipo de aprobación UL, CE, CSA, RCM, FCC, DNV,
Tipo de aprobación ABS
Sensor de punto PGA-LS10
El sensor de luz en línea recta detecta un arco eléctrico
hasta de 3 kA dentro de una media esfera de 2 m. Estado
del sensor e indicación de disparo. Dimensiones: consulte el
manual de PGR-8800
Sensor de fibra óptica PGA-LS20/PGA-LS30
Sensor de luces de 360° para instalaciones complejas con
zonas oscuras o para operar con barras colectoras. Estado
del sensor e indicación de disparo. Dimensiones: consulte el
manual de PGR-8800
Unidad lógica de diodo PGA-1100
Este módulo permite que varios relevadores PGR-8800
activen el mismo interruptor automático, por ejemplo en un
flujo ascendente o un disyuntor no automático. Dimensiones
H 80mm (3,15”); A 20mm (0,79”);
P 70mm (2,76”)
Transformadores de corriente
Eliminan las activaciones de arco eléctrico no deseadas y
brindan protección contra sobrecorrientes.
Accesorios
A
B
D
C
Monitoreo de arco eléctrico
77
5PROTECCIÓN CONTRA ARCO ELÉCTRICO
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/af0500
Descripción
La serie AF0500 es un relevador basado en un microprocesador
que limita los daños por fallas de arco eléctrico detectando la luz
proveniente de un arco eléctrico y activándose rápidamente. La
unidad se adapta perfectamente para tableros de distribución,
transformadores y aplicaciones de convertidor de energía.
Los sensores, las entradas y las conexiones son monitoreadas para
garantizar un funcionamiento con control automático de protección.
Un circuito de disparo de estado sólido secundario proporciona
una ruta de disparo redundante. Se utiliza un puerto USB para
configuración y acceso a registros de eventos.
La AF0500 incluye una interfaz Ethernet y es compatible con
comunicaciones TCP Modbus®. La unidad permite configuración
directa para disparo por zonas, disparo de interruptor automático de
flujo ascendente y aplicaciones de disyuntores no automáticos.
Una serie de entradas de control permite la interconexión de
múltiples unidades AF0500 para conformar un sistema.
Sensores ópticos
La AF0500 acepta tanto sensores de punto PGA-LS10 como sensores
de fibra óptica PGA-LS20/PGA-LS30. Por ello, es compatible con
conjuntos de sensores de punto y fibra óptica.
Para una detección de fallas eficiente, los LED del sensor y el panel
frontal indican el estado del sensor y qué sensor presenta fallas de
arco eléctrico.
Disposición del sensor
El relevador de arco eléctrico AF0500 y los sensores se instalan
con facilidad en proyectos de retroadaptación y mecanismos de
control nuevos que requieren poca o ninguna reconfiguración.
Funciona de inmediato en aplicaciones simples sin la necesidad de
configuraciones de PC. Los sistemas más complejos con múltiples
fuentes de alimentación se configuran mediante el software de
interfaz USB integrado del relevador.
En general, se recomienda instalar 1 o 2 sensores por cubículo
para cubrir todas las barras colectoras verticales y horizontales,
los compartimientos de interruptores automáticos, las gavetas, y
cualquier lugar donde exista la posibilidad de fallas de arco eléctrico.
Instalar un sensor de fibra óptica en los armarios eléctricos y en áreas
donde la cobertura del sensor de puntos es incierta conlleva a una
cobertura completa y a un mayor nivel de redundancia. Incluso si la
política es trabajar solamente con sistemas sin energía, todas las áreas
de mantenimiento deberían ser monitoreadas para prevenir daños
potenciales y costos adicionales.
Información para pedir
SERIE AF0500
Relevador de arco eléctrico
NÚMERO DE PEDIDO DESCRIPCIÓN
AF0500-00 Relevador de arco eléctrico
AF0500-00-CC Relevador de arco eléctrico, Terminado general
CARACTERÍSTICAS BENEFICIOS
4 entradas de sensor de arco
eléctrico
Compatible con sensores de punto y de fibra
óptica
Tiempo de disparo de arco
eléctrico <1 ms
Limita los daños por arco eléctrico y el riesgo
de causar accidentes con el personal
2 salidas de disparo de alta
velocidad IGBT
Compatible con aplicaciones tales como
disparo de interruptores de flujo ascendente o
disparo de disyuntores no automáticos
Alimentación eléctrica universal Alimentación eléctrica de 100-240 V CA,
24-48 V CC, o 110-250 V CC
Sistema de control automático de
protección
Monitoreo continuo de sensores ópticos y
entradas que garantizan la protección
Indicación LED
(en unidad y en cada sensor)
Estado de disparo y del sensor tanto para los
sensores como para el relevador
Red de conexiones independiente Es posible conectar múltiples unidades AF0500
para conformar un sistema
Interfaz USB
El software de configuración y registro de
datos utiliza una interfaz USB sin controladores
ni instalación de software adicional
Registro de datos
Grabadora de eventos integrada para
diagnósticos del sistema (2048 líneas de
registro)
Interfaz de Ethernet Comunicación TCP Modbus®
Características y beneficios
Arco eléctrico
Sensor de fibra óptica
Sensores de punto
ACCESORIOS REQUISITOS
PGA-LS10 Requerido*
PGA-LS20, PGA-LS30 Requerido*
PGA-1100 Opcional
Monitoreo de arco eléctrico
78
5 PROTECCIÓN CONTRA ARCO ELÉCTRICO
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/af0500
SERIE AF0500
Aplicaciones
Activación por zonas
AF0500 puede activar 2 zonas por separado. Los sensores pueden ser
asignados a las zonas individualmente por medio de una configuración
de PC.
Disparo del interruptor de flujo ascendente
En caso de fallas en la activación del interruptor automático local,
se envía otro comando de disparo luego de un retardo breve a un
interruptor de flujo ascendente para corregir la falla.
Sensor de punto PGA-LS10
El sensor de luz en línea recta detecta un arco eléctrico
hasta de 3 kA dentro de una media esfera de 2 m.
Incluye indicación de disparo y estado del sensor.
Sensor de fibra óptica PGA-LS20/PGA-LS30
Sensor de luz de 360° para operar con barras colectoras.
Estado del sensor e indicación de disparo.
Unidad de lógica de diodos PGA-1100
Este módulo permite que múltiples relevadores de arco
eléctrico activen un interruptor automático común, por
ejemplo, un disyuntor no automático.
Accesorios
Especificaciones
Alimentación eléctrica
Universal 100-240 V CA (+10 %, -15 %) 50/60 Hz, 20 VA, 110-250 V CC
(+10 %, -20 %) 8 W
Voltaje bajo 24-48 V CC (+10 %, -20 %), 4 W
Entradas de sensor 4 entradas de sensor de luz para sensores PGA-LS10, PGALS20 y PGA-LS30
Salidas de disparo 2 interruptores IGBT
Clasificación de UL 120/240 V CA, 1800 VA, 0,75 A continuo máximo,
125/250 V CC, 138 VA, 0,75 A continuo máximo
Clasificación nominal
suplementaria
Procesa/transfiere 30 A por 0,2 s
Clasificación nominal
de voltaje 24-300 V CA, 24-300 V CC
Clasificación nominal
de corriente 20 A por 2 s, 10 A por 5 s
Comunicación Ethernet, 2 puertos con interruptor de Ethernet interno, TCP
Modbus®
Dimensiones H 130 mm (5,1"); A 200 mm (7,9"); P 54 mm (2,1")
Peso para envío 0,9 kg (2 lb)
Temperatura
de funcionamiento –40 °C a +70 °C (–40 °F a 158 °F)
Aprobaciones certificado de UL (UL508), CE, RCM, FCC, CSA
Garantía 5 años
Montaje Superficie, DIN (con sujeciones de adaptador D0050 opcional)
Zone 1 Zone 2
Sensor
Sensor
Sensor
Sensor
Activación del disyuntor no automático
En caso de un arco eléctrico en una sección del tablero eléctrico,
la AF0500 puede activar tanto el alimentador entrante como el
disyuntor no automático simultáneamente. Es por ello que la parte
afectada del tablero eléctrico está aislada de la parte no afectada.
Monitoreo de arco eléctrico
Zona 1 Incoming
Feeder
Incoming
Feeder
Bus Tie
Sensor
Sensor
Sensor
Sensor
Sensor
Sensor
Sensor
Sensor
Alimentador
entrante
Alimentador
entrante
Conector ómnibus
Upstream Breaker
Local Breaker
Incoming
Feeder
Sensor
Sensor
Sensor
Sensor
Alimentador
entrante
Interruptor
contracorriente
Interruptor local
Zona 2
79
5PROTECCIÓN CONTRA ARCO ELÉCTRICO
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse
Monitoreo de arco eléctrico Conocimientos aplicados | Respuestas entregadas
Descripción
El relevador de arco eléctrico Serie AF0100 es una solución económica
que reduce los daños por arco eléctrico detectando la luz de un
arco eléctrico y activándose rápidamente. Es posible conectar dos
sensores de luz remotos a un relevador y múltiples relevadores
AF0100 o AF0500 para monitorear sensores adicionales, brindando una
completa cobertura para un amplio rango de aplicaciones. Su estructura
compacta, montable en superficie y de riel DIN hace de esta unidad la
solución ideal para los fabricantes de equipo.
Se proporcionan dos contactos en C aislados para aplicaciones
con múltiples dispositivos que requieren ser activados. Esto es
particularmente útil para aplicaciones de generadores donde el
generador y el interruptor automático necesitan ser activados en caso
de un arco eléctrico.
El AF0100 acepta sensores de punto PGA-LS10 y sensores de fibra
óptica PGA-LS20/PGA-LS30 en cualquier combinación. Se monitorea
constantemente el estado del sensor para garantizar el funcionamiento
del control automático de protección. Un circuito de disparo redundante
de estado sólido proporciona un mecanismo de control automático
interno y una respuesta óptima de arco eléctrico durante la activación.
Los LED del sensor y el panel frontal indican el estado del sensor y la
ubicación de la falla.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Compacto Se adapta a diversos rangos de aplicaciones de arco eléctrico
Dos tipos de
sensores ópticos
Se puede utilizar sensores de punto o sensores de fibra
óptica en cualquier combinación para flexibilidad en la
cobertura
Entradas de sensor duales Un relevador puede monitorear dos sensores de arco
eléctrico
Sensibilidad a la luz
ajustable
Permite un funcionamiento en entornos luminosos y máxima
sensibilidad en ambientes oscuros
Red de conexiones
independiente
Es posible conectar múltiples unidades AF0100 o AF0500
para conformar un sistema
Sistema de control
automático de protección
Monitoreo continuo de sensores ópticos y entradas que
garantizan la protección
Interfaz USB El software de configuración es fácil de usar y no requiere de
controladores o software adicional
Estado de la unidad Garantiza la protección continua con indicaciones remotas de
diagnóstico automático y estado de la unidad
Indicación LED Indicación de estado de disparo y del sensor tanto en
relevadores como en sensores
Relevador de arco eléctrico
Diagrama de circuitos simplificado
PGA-LS10
(Sensor de punto)
PGA-LS20/
PGA-LS30
(Sensor de fibra óptica)
Alimentación
eléctrica de
24-28 V CC
o bien,
Alimentación
eléctrica de
100-240 V CA
Conexión de E/S digital para otra unidad AF0100 o AF0500
(Relevador de seguridad de arco eléctrico)
AF0100
Activación 1 Activación 2 Estado de
la unidad L2
L1
–
+
Información para pedir
NÚMERO DE PEDIDO DESCRIPCIÓN
AF0100-00 Relevador de arco eléctrico, alimentación eléctrica universal
AF0100-10 Relevador de arco eléctrico, 24-48 V CC
Sensor de punto PGA-LS10
El sensor de luz en línea recta detecta un arco eléctrico
hasta de 3 kA dentro de una media esfera de 2 m.
Incluye indicación de disparo y estado del sensor.
Sensor de fibra óptica PGA-LS20/PGA-LS30
Sensor de luz de 360° para operar con barras colectoras.
Incluye indicación de disparo y estado del sensor.
Accesorios Especificaciones
Voltaje de entrada
AF0100-00 100-240 V CA/V CC, 24-48 V CC
AF0100-10 24-48 V CC
Dimensiones H 90 mm (3,5"); A 128 mm (5");
P 60 mm (2,4")
Relevadores de error, disparo Forma C, 250 V CA/30 V CC, 6 A resistivos
Sensibilidad 10-25 klux programable
Montaje Superficie, riel DIN
Temperatura de funcionamiento -40 °C a +70 °C (-40 °F a 158 °F)
Peso de envío 1 kg (2,2 lb)
Certificaciones Contactor de fábrica
Garantía 2 años
A
B
A
B
SERIE AF0100
www.littelfuse.com/af0100
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 11.
80
5 PROTECCIÓN CONTRA ARCO ELÉCTRICO
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/a0220
Detectores de arco
SERIE A0220
Sensor de punto para detección de arco eléctrico
Rango de detección para una falla eléctrica
de 3 kA
2m
2m 2m
CABLE SENSOR TERMINAL
Rojo 1
Verde 2
Pantalla 3
NÚMERO DE PEDIDO CONTROL DE ALIMENTACIÓN
A0220.0010 Detector de arco eléctrico tipo V, de 10 m
A0220.0020 Detector de arco eléctrico tipo V, de 15 m
A0220.0030 Detector de arco eléctrico tipo V, de 10 m, con
aprobación CCC
A0220.0040 Detector de arco eléctrico tipo V, de 15 m, con
aprobación CCC
Conexión al relevador D0920
Información para pedir
CABLE
SENSOR
TERMINAL DE
SENSOR 1
TERMINAL DE
SENSOR 2
TERMINAL DE
SENSOR 3
TERMINAL DE
SENSOR 4
TERMINAL DE
SENSOR 5
TERMINAL DE
SENSOR 6
Verde 4 8 12 16 20 24
Rojo 3 7 11 15 19 23
Pantalla Chasis Chasis Chasis Chasis Chasis Chasis
Conexión al relevador PGR-8800
Descripción
El detector de arco eléctrico A0220 es un sensor fotoeléctrico.
Tiene un área de detección de 180°. La señal del sensor es una
señal de corriente en mA de 0,5 mA/klux. El sensor incluye 10 m de
cable eléctrico revestido de dos líneas que puede ser recortado o
extendido fácilmente a un máximo de 50 m. Utilice un cable Belden
85240 o uno similar (2 x 0,50 mm2
).
El sensor es compatible con relevadores de arco eléctrico D0920,
D1000 y PGR-8800 de Littelfuse.
Instalación de sensor A0220
Los sensores incluyen una plantilla perforada
cubierta con adhesivo para una fácil
instalación en panel o superficie. Todas las
dimensiones se indican en milímetros.
Fije la plantilla perforada al lugar donde
instalará el sensor. Puede utilizar tornillos
M4 o M5 o remaches ciegos (4 mm o 5 mm).
Los tornillos de montaje son M4 para los
orificios superiores. Esta plantilla se adapta
a las dimensiones de montaje para el sensor
A1000 o PGA-LS10.
Los orificios de montaje inferiores son tornillos
autorroscantes de 5 mm (rosca de 3,5 mm) o
para M5 (rosca de 4,2 mm). Esta plantilla se
adapta a las dimensiones de montaje para los
sensores A0200 y A0300.
Para reemplazar los sensores, consulte el
manual del relevador.
Especificaciones
Sensibilidad 0,5 mA/klux
Rango para D0920 2 klux-30 klux
Rango para PGR-8800 10 klux-30 klux
Temperatura ambiente –25 °C a +70 °C
Grado de protección IP65
Tabla de selección del modelo:
el detector de arco eléctrico A0220 incluye un cable de 10 m
4 x ø3,5
ø9
A0220
Guía de
perforación
81
5PROTECCIÓN CONTRA ARCO ELÉCTRICO
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pga1100
Accesorio para relevadores de arco eléctrico
PGA-1100 (D1100)
Diodo lógico
Descripción
El módulo de lógica de diodo PGA-1100 es un accesorio opcional
para los relevadores de arco eléctrico de Littelfuse.
Se utiliza en instalaciones con más de un interruptor automático
y más de un relevador de arco eléctrico. El propósito de la unidad
es separar las rutas de disparo, de modo que los interruptores
puedan ser activados independientemente.
Se utiliza en aplicaciones tales como tableros eléctricos con dos
alimentadores entrantes y un disyuntor no automático, o tableros
eléctricos con varias zonas de protección y disparo de un interruptor
automático de flujo ascendente común.
La unidad tiene tres diodos de entrada para controlar las salidas
de tres relevadores de arco eléctrico y tres diodos de salida para
controlar las bobinas de disparo de tres interruptores automáticos.
Si se requieren más de tres relés/interruptores automáticos, se
pueden instalar más unidades conectando un terminal n.º 8 de un
tablero al terminal n.º 4 del siguiente, aumentando así el número de
entradas y salidas con múltiplos de tres.
Para obtener información sobre aplicaciones, consulte los manuales
de los relevadores de arco eléctrico.
Especificaciones
Diodos Voltaje inverso de 1000 V, 3 A continuo, 25 A por 1 s
Certificación CE
Dimensiones H 70 mm (2,76"); A 20 mm (0,79"); P 80 mm (3,15")
Diagrama de circuitos simplificado
1 2 3
4 8
5 6 7
NÚMERO DE PEDIDO DESCRIPCIÓN
PGA-1100.0010 Unidad de lógica de diodos
Información para pedir
82
Relevadores de protección
www.littelfuse.com/relayscontrols ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
83
Relevadores de protección
Controladores y relevadores de conmutación
CONTROLES Y RELEVADORES DE CONMUTACIÓN
6
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
CONTROLADORES Y RELEVADORES
DE CONMUTACIÓN
Controles simples que cumplen funciones específicas tales como cambiar la
intensidad de luces; variar la velocidad de un motor, o controlar la temperatura de
un calentador.
Serie PHS Control de fase ..........................................................................84
Serie SIR Relevador de estado sólido - Aislado .......................................86
Serie SLR Relevador de estado sólido - No aislado .................................88
TCR9C Controlador de temperatura .....................................................90
84
Relevadores de protección
Controladores y relevadores de conmutación
CONTROLES Y RELEVADORES DE CONMUTACIÓN
6
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/phs
SERIE PHS
Descripción
La serie PHS es un método ideal para cambio de la intensidad de
luz, variación de la velocidad de un motor/ventilador, o control de la
temperatura de un calentador. El voltaje de salida efectivo se ajusta con
un potenciómetro externo como accesorio ideal para aplicaciones de
voltaje de línea.
Funcionamiento
En la aplicación del voltaje de entrada, el voltaje de salida efectivo puede
ser variado cambiando el valor de la resistencia exterior. A medida que
aumenta la resistencia exterior, disminuye el voltaje de salida efectivo.
Lo inverso también se aplica.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Ajuste externo -
Potenciómetro de valor
nominal 230 V CA
Permite controlar cargas pesadas directamente, su diseño
de estado sólido aumenta la vida útil
Hasta 20 A estable
fijo - 200 A de corriente de
inserción
Permite controlar cargas pesadas directamente, su diseño
de estado sólido aumenta la vida útil
Montaje de superficie
de un solo orificio Permite una fácil y rápida instalación
Accesorios
P1004-174 (100 kΩ 1 W), P1004-175 (200 kΩ 2 W)
Versa-Pot
Montable en panel, se recomienda potenciómetro
industrial para controlar el desfase de tiempo.
P0700-7 Versa-Knob
Diseñada para eje de 6,35 mm (0,25 in) de
Versa-Pot. Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Terminales hembra de 6,35 mm (0,25 in) son
fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE ENTRADA CLASIFICACIÓN NOMINAL
PHS120A10 120 V CA 10 A
PHS120A20 120 V CA 20 A
PHS120A6 120 V CA 6 A
PHS230A10 230 V CA 10 A
PHS230A20 230 V CA 20 A
PHS230A6 230 V CA 6 A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
Dispositivo de salida de triodo
V = Voltaje
L = Carga
RT = Ajuste externo
Control de fase
Para plano de dimensiones consulte: Apéndice, página 512, Figura 19.
85
Relevadores de protección
Controladores y relevadores de conmutación
CONTROLES Y RELEVADORES DE CONMUTACIÓN
6
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/phs
SERIE PHS
Especificaciones
Salida
Tipo Control de ángulo para voltaje de fase variable
Clasificación nominal Estado fijo
(en 100 % de activación)
Corriente de
inserción*
1 A 10 A
6 A 60 A
10 A 100 A
20 A 200 A
Corriente de carga mínima 100 mA
Caída de voltaje ≅ 2 V en corriente nominal
Entrada
Voltaje 120 o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea 50/60 Hz
Protección
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para montaje de
superficie
Resistencia de aislamiento ≥100 MΩ
Mecánica
Montaje * Montaje en superficie con un tornillo n.º 10 (M5 x 0,8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho de 6,35 mm
(0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso 1 A: ≅ 68 g (2,4 oz)
6, 10 y 20 A: ≅ 111 g (3,9 oz)
Ajuste externo
Potenciómetro
120 V CA 100 KΩ nominal a 1 W
230 V CA 200 KΩ nominal a 2 W
Debe tener resistencia al aislamiento ideal para
aplicaciones de voltaje de línea.
*Las unidades nominales ≥ 6A deben ser atornilladas a una superficie metálica utilizando el disipador de calor
compuesto. La temperatura máxima de la superficie de montaje es de 90 °C. Corriente de inserción: no
repetitiva por 16 ms.
Forma de onda de salida típica
86
Relevadores de protección
Controladores y relevadores de conmutación
CONTROLES Y RELEVADORES DE CONMUTACIÓN
6
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/sir
SERIE SIR
Relevador de estado sólido - Aislado
Descripción
La serie SIR está diseñada para aplicaciones industriales que requieren
de funcionamiento resistente y confiable. Proporciona una salida de
estado sólido de alta capacidad y ópticamente aislada con capacidad
de conmutación de energía hasta de 20 A en estado fijo y 200 A en
corriente de inserción. La conmutación de voltaje cero SIR2 aumenta la
vida útil de una luz incandescente hasta por 10 veces. La conmutación
aleatoria SIR1 es ideal para cargas inductivas. Al utilizar terminales
hembra completamente aislados en los cables de conexión, el sistema
cumple los requisitos para conexiones a prueba de descargas eléctricas.
Funcionamiento
La salida de estado sólido está ubicada entre las terminales n.º 1 y n.º 3,
y normalmente está abierta o cerrada sin voltaje de control aplicado
a los terminales n.º 4 y n.º 5. Cuando se aplica el voltaje de control a
los terminales n.º 4 y n.º 5, la salida de estado sólido se abre o cierra
respectivamente.
Restablecimiento: Al deshabilitar el voltaje de control se restablece
la salida. La unidad también se restablece al deshabilitar el voltaje de
salida.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto que mide
50,8 mm (2 in)
Ideal para aplicaciones de fabricantes de equipo original
donde el espacio es limitado
Estado completamente
sólido y encapsulado
Sin piezas móviles para arco eléctrico y desgaste a través
del tiempo y encapsulado para proteger contra choques
eléctricos, vibración y humedad
Clasificación nominal de
20 A y 200 A para salida de
corriente de inserción
Proporciona control directo de cargas pesadas resistivas,
incandescentes o inductivas
La salida de conmutación
está ópticamente aislada de
la entrada de control
Tiene la capacidad de conectarse entre 2 circuitos
eléctricos diferentes
Los modelos SIR1 brindan
conmutación aleatoria
Diseñados para utilizar con cargas resistivas e
incandescentes, que aumenta la vida útil de las luces hasta
por 10 veces
Los modelos SIR2 brindan
conmutación de voltaje cero Perfectos para cargas resistivas e incandescentes
Superficie de montaje
metalizada
Facilita la transferencia de calor en aplicaciones de
corriente alta
Información para pedir
MODELO CONMUTACIÓN VOLTAJE DE CONTROL CLASIFICACIÓN
NOMINAL ESTRUCTURA DE SALIDA VOLTAJE DE SALIDA
SIR1A1A4 Aleatorio 9-30 V CA o CC 3 A Normalmente abierta 120 V CA
SIR1A20A4 Aleatorio 9-30 V CA o CC 20 A Normalmente abierta 120 V CA
SIR1B6B4 Aleatorio 90-150 V CA o CC 6 A Normalmente cerrada 120 V CA
SIR1C20B6 Aleatorio 190-290 V CA o CC 20 A Normalmente cerrada 230 V CA
SIR2A20A4 Voltaje cero 9-30 V CA o CC 20 A Normalmente abierta 120 V CA
SIR2B20A4 Voltaje cero 90-150 V CA o CC 20 A Normalmente abierta 120 V CA
SIR2B20B4 Voltaje cero 90-150 V CA o CC 20 A Normalmente cerrada 120 V CA
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
Diagrama de conexiones
V = Voltaje
CV = Voltaje de control
L = Carga
La carga puede estar
conectada al terminal n.º 3
o n.º 1.
Nota: Se muestra la salida normalmente
abierta. Está disponible también la salida
normalmente cerrada.
Para plano de dimensiones consulte: Apéndice, página 512, Figura 19.
87
Relevadores de protección
Controladores y relevadores de conmutación
CONTROLES Y RELEVADORES DE CONMUTACIÓN
6
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
SERIE SIR
Especificaciones
Salida
Tipo Aislamiento óptico, estado completamente sólido
Forma SPST, NO o NC
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Clasificaciones nominales Estado fijo Corriente de
inserción*
Dispositivo
de salida
3 A 30 A Triodo
6 A 60 A Triodo
10 A 100 A Triodo
20 A 200 A Triodo
Corriente de carga mínima ≅ 50 mA
Caída de voltaje ≅ 2 V en corriente nominal
Corriente de filtración
(estado abierto) ≅ 6 mA
Entrada
Tipo Aislamiento óptico y transistor LED/fotoeléctrico
Voltaje de control 9-290 V CA/CC en 3 rangos
Consumo de energía ≤ 0,5 W
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie de
montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje* Montaje en superficie con un tornillo n.º 10 (M5 x
0,8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho de 6,35 mm
(0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-55 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
*Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto. La temperatura
máxima de la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de funciones
V = Voltage
CV = Control Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
R = Reset
= Undefined
Time
www.littelfuse.com/sir
V = Voltaje
CV = Voltaje de control
NO = Contactor
normalmente
abierto
NC = Contactor
normalmente
cerrado
R = Restablecer
= Tiempo no
definido
88
Relevadores de protección
Controladores y relevadores de conmutación
CONTROLES Y RELEVADORES DE CONMUTACIÓN
6
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/slr
SERIE SLR
Relevador de estado sólido - No aislado
L1 N/L2
V = Voltaje
S1 = Conmutador de inicio
L = Carga
Nota: Se muestra la unidad
normalmente abierta. Está disponible
también la salida normalmente
cerrada.
Descripción
La serie SLR no tiene aislamiento entre la entrada del conmutador de
control y la salida de estado sólido. Seleccione la SLR para aplicaciones
donde el conmutador de control tiene la misma fuente de voltaje que
la carga. Brinda la fiabilidad, larga duración y poco ruido de un relevador
de estado sólido, sin el costo del sistema de circuitos de aislamiento.
La serie SLR ofrece conmutación aleatoria y generalmente se utiliza en
cargas inductivas. Al utilizar terminales hembra completamente aislados
en los cables de conexión, el sistema cumple los requisitos para
conexiones a prueba de descargas eléctricas.
Funcionamiento
La salida de estado sólido se encuentra entre los terminales n.º 1 y n.º 2
y puede solicitarse como normalmente abierta o normalmente cerrada,
cuando el voltaje aplicado y el S1 está abierto. Cuando el S1 está
cerrado, se cierra, o abre, la salida de estado sólido entre los terminales
1 y 2. Si el S1 está abierto, la salida de estado sólido se abrirá, o cerrará.
Restablecimiento: Al abrir el S1 se restablece la salida a su estado
inicial. El restablecimiento se logra también al deshabilitar el voltaje
de entrada.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto que mide
50,8 mm (2 in) cuadrados
Ideal para aplicaciones de fabricantes de equipo original
donde el espacio es limitado
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni
desgaste prematuro y unidad encapsulada para proteger
contra choques eléctricos, vibración y humedad.
Clasificación nominal de
entrada hasta de 20 A
fija, 200 A de corriente de
inserción
Proporciona control directo de cargas pesadas inductivas,
resistivas, o incandescentes
Superficie de montaje
metalizada
Facilita la transferencia de calor en aplicaciones de
corriente alta
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
Información para pedir
MODELO CONMUTACIÓN VOLTAJE DE
ENTRADA
CLASIFICACIÓN
NOMINAL DE
SALIDA
ESTRUCTURA
DE SALIDA
SLR1420A Aleatorio 120 V CA 20 A Normalmente
abierta
SLR1610A Aleatorio 230 V CA 10 A Normalmente
abierta
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Para plano de dimensiones consulte: Apéndice, página 512, Figura 19.
89
Relevadores de protección
Controladores y relevadores de conmutación
CONTROLES Y RELEVADORES DE CONMUTACIÓN
6
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
SERIE SLR
Especificaciones
Salida (Contactor)
Tipo Estado sólido no aislado
Forma SPST, NO o NC
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Clasificaciones nominales Estado fijo Corriente de
inserción*
Dispositivo
de salida
1 A 10 A SCR y puente
de conexión
Rectificador
6 A 60 A Triodo
10 A 100 A Triodo
20 A 200 A Triodo
Corriente de carga mínima ≅ 50 mA
Caída de voltaje
(en corriente nominal) ≅ unidades de 2 V-6, 10 y 20 A; ≅ unidades de
2,5 V-1 A
Corriente de filtración
(estado abierto) ≤ 5 mA
Voltaje de conmutador de inicio Igual al voltaje de salida
Consumo de energía ≤ 0,5 W
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie de
montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje* Montaje en superficie con un tornillo n.º 10 (M5 x 0,8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho de 6,35 mm
(0,25 in)
Entorno
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso Unidades de 1 A: ≅ 68 g (2,4 oz)
Unidades de 6, 10, 20 A: ≅ 111 g (3,9 oz)
*Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto. La temperatura máxima
de la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
Diagrama de funciones
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
R = Reset
= Undefined
Time
www.littelfuse.com/slr
V = Voltaje
S1 = Conmutador de
inicio
NO = Contactor
normalmente
abierto
NC = Contactor
normalmente
cerrado
R = Restablecer
= Tiempo no
definido
90
Relevadores de protección
Controladores y relevadores de conmutación
CONTROLES Y RELEVADORES DE CONMUTACIÓN
6
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tcr9c
Descripción
El TCR9C de control de temperatura de estado sólido es una unidad
modular económica para el control exacto de la temperatura. La salida
de alta tensión está disponible en 20 amperios y permite controlar la
temperatura en el punto de ajuste. La superficie de montaje eficiente
permite la utilización de equipo en el disipador de calor. Diseñado para
utilizarse con cargas resistivas.
Funcionamiento
Control de punto de ajuste: el TCR9C es un controlador de temperatura
de punto de ajuste. Cuando la resistencia del termistor es alta (superior
al punto de ajuste), la salida de estado sólido se activa. Cuando la
resistencia del termistor disminuye (aumenta la temperatura) al punto
de ajuste o debajo de éste, la salida se desactiva. Cabe mencionar
que el diferencial de temperatura (carencia o aumento desmedido) se
debe principalmente al sistema como un todo. La masa del sistema, el
tamaño de los calentadores y el sensor juegan un rol fundamental. El
control del punto de ajuste individual es más eficiente cuando el tiempo
de latencia es poco, o nulo, entre el calentador y el sensor, y cuando el
calentador no está sobrecargado.
Características y beneficios
J Detección de termistor NTC para control de punto de ajuste
económico
J Salida de estado sólido para control de calentadores resistivos
J Configuración externa del punto de ajuste
J Paquete pequeño, encapsulado, montaje con un solo tornillo
J Superficie de montaje metálica que utiliza el equipo como disipador
de calor
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Especificaciones
Control
Tipo Punto de ajuste individual, temperatura negativa
Detección de coeficiente de resistencia
Tipo de sensor Termistor, coeficiente de temperatura negativa
(provista por el usuario)
Aislado eléctricamente para RMS 1500 V mín.
Ajuste Temperatura de punto de ajuste definida a través de
resistencia externa
Exactitud ≤ ± 5 % de la resistencia del punto de ajuste
Añade la tolerancia del termistor NTC y la
desviación del punto de ajuste de la temperatura
Punto de ajuste vs. Temperatura
ambiente y Voltaje de
funcionamiento ± 5 % de la resistencia del punto de ajuste
Tiempo de restablecimiento ≤ 150 ms
Entrada
Voltaje 120-240 V CA
Tolerancia ± 15 %
Frecuencia de línea CC 50/60 Hz
TCR9C
Diagrama de conexiones
Caution: NTC Thermistor must be
electrically insulated, 1500 volts RMS
minimum.
NTC
Thermistor
RT
Set Point
Adjust 5 KΩ
V = Voltaje
L = Carga
Precaución: El termistor NTC debe
estar aislado eléctricamente,
mínimo de 1500 voltios RMS.
Termistor
NTC
Controlador de temperatura
RT
Punto de ajuste
Ajuste de 5 KΩ
Para plano de dimensiones consulte: Apéndice, página 512, Figura 19.
91
Relevadores de protección
Controladores y relevadores de conmutación
CONTROLES Y RELEVADORES DE CONMUTACIÓN
6
©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
TCR9C
V = Voltaje
L = Carga
SP = Punto de ajuste
NTC = Temperatura negativa
Coeficiente del termistor
Diagrama de funciones
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
1 2 3 4 5 6 7 8 9 10
RT (kOhms)
NTC (kOhms)
Load ON
Load OFF
Note: If R T value exceeds 13kOhms, the output will
not energize.
Ajuste vs. Resistencia del termistor
Nota: Si el valor RT es mayor que 13 kΩ, la salida
no será energizada.
www.littelfuse.com/tcr9c
Salida
Tipo Estado sólido
Forma No aislado, polea única, conmutación de voltaje cero
Clasificación nominal Modelo Estado fijo Corriente
de inserción*
C 20 A 200 A*
Corriente de carga mínima 100 mA
Caída de voltaje ≅ 2 V a corriente nominal
Corriente de filtración de
estado inactivo ≅ 5 mA a 230 V CA
Protección
Voltaje disruptivo dieléctrico Terminales de ≥ 2000 V para superficie de montaje
Voltaje de aislamiento ≥100 mΩ
Sistema de circuitos Encapsulado
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10 (M5 x 0,8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho Terminales de
conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 77 g (2,7 oz)
* Debe ser atornillado a una superficie metálica utilizando el disipador de calor compuesto. La temperatura
máxima de la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
Carga activa
NTC (kΩ)
RT (kΩ)
Carga
inactiva
92 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
www.littelfuse.com/relayscontrols
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 93
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols
Para obtener más información…
y para descargar nuestro Manual de
protección de motores o documentación
técnica, haga clic en Technical Resources
en Littelfuse.com/MotorProtection
PROTECCIÓN DE MOTORES Y BOMBAS
Previenen daños en los motores ocasionados por sobrecargas, trabas, pérdidas de
fase o desbalanceo, calor de fuentes no eléctricas, puestas en marcha intensas o
ciclos de funcionamiento excesivos. Las curvas térmicas dinámicas, además de las
funciones de protección integrada, medición, y registro de datos aumentan la vida
útil de un motor y maximizan la eficiencia del proceso.
Serie PGR-6100 Relevador de aislamiento y detección de fallas de
conexión a tierra en motores...............................94
PGR-6101-120 Relevador de aislamiento y detección de fallas
de conexión a tierra en motores .........................95
Serie MPU-32 Unidad de protección del motor............................96
Serie MPS Sistema de protección del motor..........................98
Serie MPU-32-X69X Kit de retroadaptación de relevador de
seguridad para motores......................................100
Serie MPS-469X Kit de retroadaptación de relevador de
seguridad para motores......................................100
111-Insider-P /
231-Insider-P Monitor para bombas monofásicas....................101
232-Insider Monitor para bombas monofásicas....................104
111P / 233P /
Serie 233P-1.5 Monitor para bombas monofásicas....................106
234-P Monitor para bombas monofásicas ...................108
235P Monitor para bombas monofásicas....................110
Serie MP8000 Bluetooth® Monitor de voltaje y corriente..........112
Serie 777 Monitor de voltaje y corriente trifásico ..............114
Serie 777/77C Monitor de voltaje y corriente monofásica.........118
Serie 777-KW/HP-P2 Monitor de voltaje y corriente trifásico ..............120
Serie 777-AccuPower Monitor de voltaje y corriente trifásico ..............123
Serie 77C-KW/HP Monitor de voltaje y corriente monofásica.........125
SIO-RTD-02-00 Monitor de entrada de temperatura ...................128
Relevadores de protección
94 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pgr-6100
SERIE PGR-6100 (GFR4000)
Monitor de aislamiento y detección de fallas de
conexión a tierra
Descripción
El PGR-6100 combina las características de un relevador de seguridad
contra fallas de conexión a tierra y el monitor de aislamiento en un
solo equipo. Protege contra fallas de conexión a tierra monitoreando
la resistencia de aislamiento cuando el motor está sin energía y
monitoreando la corriente de fallas de conexión cuando el motor está
energizado. El PGR-6100 integra dos salidas separadas para medidores
de ohmios y corriente opcionales, y dos relevadores de alarma por
separado. Opera en sistemas sin conexión a tierra y conectados por
resistencia, o con conexión directa a tierra de una o tres fases hasta de
6 kV.
Especificaciones
Números de dispositivo IEEE Averías de conexión a tierra (50G/N, 51G/N),
Detector de fallas de conexión a tierra (64),
Relevador de alarma (74)
Voltaje de entrada Ver información para pedir
Dimensiones H 75 mm (3"); A 100 mm (3,9"); P 115 mm (4,5")
Retardo de respuesta <50 ms
Modo de funcionamiento
del contacto Con o sin control automático de protección
seleccionable
Filtrado armónico Característica estándar
Botón de prueba Característica estándar
Botón de restablecimiento Característica estándar
Monitoreo de enlace CT Característica estándar
Contactos de salida Dos Forma C
Salida analógica 0-1 mA
Aprobaciones Certificado UL (E183688) (1)
Garantía 5 años
Montaje DIN, Superficie
NÚMERO DE PEDIDO CONTROL DE ALIMENTACIÓN
PGR-6100-120 120 V CA
PGR-6100-240(1) 240 V CA (1)
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Captación GF ajustable
(10 mA-3 A)
La configuración de disparo proporciona un amplio rango de
protección de nivel bajo y coordinación del sistema
Captación de aislamiento
ajustable (250 kΩ-2 MΩ)
Puntos de ajuste de resistencia con aislamiento
personalizable para mayor protección
Retardo del tiempo
ajustable (50 ms-1 s)
Retardo de disparo ajustable para protección inmediata y
coordinación del sistema
Contactos de salida Dos contactos de salida Forma C para detección de fallas de
conexión y fallas de resistencia de aislamiento
Salidas analógicas
(0-1 mA)
Dos salidas analógicas que indican la resistencia de
aislamiento y la corriente de fallas de conexión a tierra
Monitoreo de enlace CT La alerta se cuando la CT no está conectada
Modo de funcionamiento de
contacto seleccionable
Modos de funcionamiento con o sin control automático de
protección seleccionables que permiten que la conexión se
derive o reducir el voltaje en el disyuntor
Características y beneficios
Transformadores de detección de fallas de conexión
Serie SE-CS30
Transformador de corriente de secuencia cero requerido
específicamente diseñado para detección de nivel bajo. Se
incluye un acondicionador de flujo para prevenir la saturación.
Acopladores de tensión alta de la familia PGR
El acoplador de tensión alta serie PGH requerido (para
sistemas >1300 V) debe ser conectado entre el conductor de
fase y el PGR-6100.
Medidor de porcentaje (%) de corriente analógico
PGA-0500 Ohmímetro analógico PGA-0510
Medidores de montaje en panel opcionales que indican la
corriente de falla de conexión a tierra como un porcentaje del
punto de ajuste y la resistencia de aislamiento.
Accesorios
A
B
B
ACCESORIOS REQUISITOS
Serie SE-CS30 Requerido
Familia PGH Requerido >1300 V
PGA-0500 Opcional
PGA-0510 Opcional
Protección contra fallas de conexión a tierra – Sistemas de CA conectados a tierra
Nota (1) - La opción de pedido de PGR-6100-240 no tiene certificación UL.
Para obtener un equipo con terminado general conforme opcional, comuníquese con la
fábrica.
L2
L1
A
Serie PGR-6100
GROUNDED
SUPPLY
CT
B
C
(Ground-Fault
& Insulation Monitor)
A
ALIMENTACIÓN
ELÉCTRICA
CONECTADA
A TIERRA
Monitor de aislamiento y
detección de fallas
de conexión a tierra
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 95
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pgr-6101-120
PGR-6101-120 (GFR4001)
Monitor de aislamiento y detección de fallas de
conexión a tierra
Descripción
El PGR-6101-120 combina las características de un relevador de
seguridad contra fallas de conexión a tierra y el monitor de aislamiento
en un solo equipo. Protege contra fallas de conexión a tierra
monitoreando la resistencia de aislamiento cuando el motor está sin
energía y monitoreando la corriente de fallas de conexión cuando el
motor está energizado. El PGR-6101-120 integra dos salidas separadas
para medidores de ohmios y corriente opcionales, y dos relevadores
de alarma por separado. Opera en sistemas sin conexión a tierra y
conectados por resistencia, o con conexión directa a tierra de una o tres
fases hasta de 6 kV.
Especificaciones
Números de dispositivo IEEE Averías de conexión a tierra (50G/N, 51G/N),
Detector de fallas de conexión a tierra (64),
Relevador de alarma (74)
Voltaje de entrada 120 V CA
Dimensiones H 75 mm (3"); A 100 mm (3,9"); P 115 mm (4,5")
Retardo de respuesta <50 ms
Modo de funcionamiento
del contacto Con o sin control automático de protección
seleccionable
Filtrado armónico Característica estándar
Botón de prueba Característica estándar
Botón de restablecimiento Característica estándar
Monitoreo de enlace CT Característica estándar
Contactos de salida Dos Forma C
Salida analógica 0-1 mA
Aprobaciones Certificado por UL (E183688)
Garantía 5 años
Montaje DIN, Superficie
Información para pedir
Diagrama de circuitos simplificado
CARACTERÍSTICAS BENEFICIOS
Captación GF ajustable
(30-200 mA)
La configuración de disparo proporciona un amplio rango
de protección de nivel bajo y coordinación del sistema
Captación de aislamiento
ajustable (60-600 kΩ)
Puntos de ajuste de resistencia con aislamiento
personalizable para mayor protección
Retardo del tiempo
ajustable (50-250 ms)
Retardo de disparo ajustable para protección inmediata y
coordinación del sistema
Contactos de salida Dos contactos de salida Forma C para detección de fallas
de conexión y fallas de resistencia de aislamiento
Salidas analógicas
(0-1 mA)
Dos salidas analógicas que indican la resistencia de
aislamiento y la corriente de fallas de conexión a tierra
Monitoreo de enlace CT Se activa cuando la CT no está conectada
Modo de funcionamiento
de contacto seleccionable
Modos de funcionamiento con o sin control automático de
protección seleccionables que permiten que la conexión
se derive o reducir el voltaje en el disyuntor
Características y beneficios
Transformadores de detección de fallas de conexión
Serie SE-CS30
Transformador de corriente de secuencia cero requerido
específicamente diseñado para detección de nivel bajo. Se
incluye un acondicionador de flujo para prevenir la saturación.
Acopladores de tensión alta de la familia PGH
El acoplador de tensión alta serie PGH requerido (para
sistemas >1300 V) debe ser conectado entre el conductor de
fase y el PGR-6101-120.
Medidor de porcentaje (%) de corriente analógico
PGA-0500 Ohmetro analógico PGA-0510
Medidores de montaje en panel opcionales que indican la
corriente de falla de conexión a tierra como un porcentaje del
punto de ajuste y la resistencia de aislamiento.
Accesorios
A
B
ACCESORIOS REQUISITOS
Serie SE-CS30 Requerido
Familia PGH Requerido >1300 V
PGA-0500 Opcional
PGA-0510 Opcional
Para obtener un equipo con terminado general opcional, comuníquese con la fábrica.
L2
L1
A
Serie PGR-6101
GROUNDED
SUPPLY
CT
B
C
(Ground-Fault
& Insulation Monitor)
A
Protección contra fallas de conexión a tierra – Sistemas de CA conectados a tierra
B
ALIMENTACIÓN
ELÉCTRICA
CONECTADA
A TIERRA
Monitor de aislamiento y
detección de fallas
de conexión a tierra
Relevadores de protección
96 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/mpu-32
Protección del motor–Avanzada
SERIE MPU-32 (PGR-6200)
Unidad de protección de motores
NÚMERO DE PEDIDO COMUNICACIÓN
MPU-32-00-00 TIA-232
MPU-32-01-00 TIA-232 y TIA-485
MPU-32-02-00 TIA-232 y DeviceNet™
MPU-32-04-00 TIA-232 y EtherNet/IP™ y TCP Modbus®
NOTA: Se requiere una de las siguientes unidades: Módulo de entrada de corriente MPUCIM-00-00, o Módulo de entrada de corriente MPU-CTI-RT-00 con terminales esféricos.
Información para pedir
ACCESORIOS REQUISITOS
CT de fase Requerido
MPS-RTD-01-00 Opcional
MPS-DIF-01-00 Opcional
MPU-32-SMK Opcional
CA-945 Opcional
MPU-16A-Y92A-96N Opcional
1
2
Descripción
La unidad de protección de motores MPU-32 se utiliza para brindar
protección de corriente y temperatura, medición y registro de datos para
motores de inducción de voltaje bajo trifásicos y de potencia intermedia.
Este relevador es ideal para retroadaptación y actualización de motores
antiguos u obsoletos utilizando los CT existentes. Para conocer el
procedimiento para cambiar relevadores obsoletos, consulte los kits de
adaptador de montaje en panel de la familia PMA.
1 Unidad de protección de motores
g Tres entradas de corriente CA
g Entrada para CT de filtración a tierra
g Entrada digital programable
g Fuente de 24 V CC para entrada digital
g Salida analógica de 4-20 mA programable
g Entrada de sensor de temperatura integrada
g RTD o PTC de 100-Ω-Platinum
g Tres relevadores de salida programables
g Comunicaciones locales RS-232, comunicaciones por red
opcionales
g Software de interfaz de PC (SE-Comm-RIS)
g Pantalla LCD de retroiluminación de 20 caracteres y 4 líneas
g Teclado numérico para programación y selección de pantallas
g 4 LED; 1 usuario programable
2 Módulo de entrada de corriente (MPU-CIM)
El Módulo de entrada de corriente MPU-CIM es la interfaz entre
el relevador MPU-32 y los transformadores de corriente sensitiva
secundario de 1 A y secundario de 5 A. El MPU-CIM se ordena por
separado del MPU-32 y puede ser instalado en superficie o en riel
DIN. Los terminales de fijación por cables son estándares, pero el
MPU-CTI está disponible para el equipo que requiere de terminales
esféricos.
Diagrama de circuitos simplificado
D
Transformadores de corriente de fase
Los transformadores de corriente de fase son
necesarios para detectar las corrientes de fase. Para
aplicaciones de actualización, se pueden utilizar los CT.
Transformador de corriente para fallas de conexión
a tierra
El transformador de corriente de secuencia cero
detecta la corriente con fallas de conexión a tierra.
Disponible con clasificaciones nominales de 5 A y 30 A
para captación de nivel bajo.
Módulo de entrada de temperatura MPS-RTD
El módulo opcional proporciona 8 entradas para
conectar unidades Pt100, Ni100, Ni120, y Cu10 RTD.
Módulo de corriente diferencial MPS-DIF
Protección de diferencial de motor opcional, compatible
con conexiones de transformador de corriente finales y
de balance central.
B
C
Accesorios
A
CT DE FASE
CT DE FASE
CT DE FASE GF CT
MPU-CIM MPS-RTD
RTD x 8
L2
L1
MPU-32
M
(Módulo de entrada de corriente)
(Relevador de seguridad para motores)
CT DE FASE
CT DE FASE
CT DE FASE GF CT
L2
MPS-CTU L1
M
MPS-RTD
MPS-OPI
RTD x 8
(Unidad de control)
(Módulo de entrada
de temperatura)
(Módulo de entrada
de temperatura)
(Interfaz del operador)
1
2
B
C
A
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 97
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/mpu-32
Protección del motor–Avanzada
CARACTERÍSTICAS IEEE # BENEFICIOS
Sobrecarga 49, 51 Aumenta la vida útil del motor y previene incendios y fallas del aislamiento
Modelo térmico dinámico Brinda protección durante los ciclos de encendido, funcionamiento, y enfriamiento
Comunicaciones Análisis remoto de los valores calculados, registros de eventos, restablecimiento de activaciones, y acceso a puntos de ajuste
Averías de conexión a tierra 50G/N, 51G/N Previene incendios y fallas catastróficas
Desbalance de corriente/
Pérdida de fase/Fase inversa 46 Previene el sobrecalentamiento debido a fases no balanceadas
Temperatura RTD 38, 49 Protección de temperatura RTD (módulo MPS-RTD) para protección en entornos severos o por pérdida de ventilación
Pérdida de fase/Fase inversa (corriente) 46 Detecta condiciones de suministro con fallas
Sobrecorriente 50, 51 Previene incendios y fallas catastróficas; aumenta la vida útil del motor
Atascamiento Previene daños al motor detectando estacamiento mecánicas o cargas excesivas
Corriente baja 37 Detecta niveles bajos o condiciones de carga insuficiente
Sobre temperatura PTC 49 Protección por sobre temperatura (PTC) para detección de entornos severos o pérdida de ventilación
Encendido por horas 66 Limita el encendido del motor por horas para prevenir el sobrecalentamiento
Diferencial 87 Módulo MPS-DIF opcional para protección de fallas en el bobinado
Modo de sobrecorriente reducida Minimiza los riesgos por arco eléctrico durante el mantenimiento
Medición Análisis de los parámetros calculados y medidos con la pantalla integrada
MPU-CIM Módulo de entrada de corriente separado para reducir el riesgo de peligros por CT abiertos y para facilitar su instalación
Salida analógica Proporciona los medios para medir los parámetros seleccionables
Registro de datos Grabadora de 100 eventos integrada para registro de datos
Terminado general Los circuitos internos con capa protectora para protegerlos contra la humedad y la corrosión
Características y beneficios
Diagrama de conexiones Especificaciones
Funciones de protección
(Números de
dispositivo IEEE)
Voltaje de entrada 65-265 V CA, 25 VA; 80-275 V CC, 25 W
Tiempo de disparo 800 ms a 120 V CA
Tiempo de ajuste de
la protección 100 ms, mínimo
Fuente de 24 V CC 100 mA, máximo
Mediciones CA RMS y DFT reales, ciclo/muestra pico de 16 y secuencia
básica negativa y positiva
Frecuencia 50, 60 Hz o ASD
Contactos de salida Tres Forma C programables
Comunicaciones TIA-232 (estándar); TIA-485, DeviceNet™, Ethernet (opcional)
Salida analógica 4-20 mA, programable
Terminado general Característica estándar
Garantía 10 años
Montaje
(Unidad de control) Panel (estándar)
Superficie (con kit de convertidor MPU-32-SMK)
(Módulo de entrada
de corriente) DIN, Superficie
Aprobaciones certificado de CSA, CE (Unión Europea), reconocido por UL,
C-Tick (Australiana)
Sobrecarga (49, 51)
Fase inversa (corriente) (46)
Sobrecorriente (50, 51)
Atascamiento
Averías de conexión a tierra
(50G/N, 51G/N)
Sobretemperatura PTC (49)
Temperatura RTD (38, 49)
Desbalance (corriente) (46)
Encendido por horas (66)
Diferencial (87)
Pérdida de fase (corriente) (46)
Corriente baja (37)
......
+
12 11 10 9 8 7 6 5 4 3 2 1
13 14 15 16 17 18 19
26 25
21 22 23 24 27 31
TRANSFORMADORES
DE CORRIENTE DE FASE
TRANSFORMADOR DE
CORRIENTE PARA FALLAS
DE CONEXIÓN A TIERRA
(obligatorio) (Recomendado)
MPS-RTD
(opcional)
MÓDULO DE ENTRADA
MPU-32
UNIDAD DE PROTECCIÓN DE MOTORES
UNIDAD DE TEMPERATURA
4-20 mA
SALIDA
ANALÓGICA
CIM I/0 MÓDULO
RELEVADOR 2
RELEVADOR 3
RELEVADOR 1
CONTROL DE
ALIMENTACIÓN
CORTE ANTERIOR
MÓDULO DE ENTRADA
DE CORRIENTE
MPU-CIM
MPS-DIF
MÓDULO
DIFERENCIAL
(opcional)
A B
C
D
2
1
SERIE MPU-32 (PGR-6200)
Relevadores de protección
98 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/mps
Protección del motor–Avanzada
SERIE MPS (PGR-6300)
Sistema de protección de motores
1
2
Descripción
El Sistema de protección de motores MPS monitorea el voltaje, la
corriente, y la temperatura para proporcionar un paquete integral de
2 funciones de protección. El MPS es un sistema modular con funciones
de protección integrada, control del motor, medición, y registro de datos.
Este sistema se utiliza generalmente para brindar protección en motores
de inducción de voltaje medio y bajo trifásicos con potencia intermedia.
1 Interfaz del operador (MPS-OPI)
g Pantalla amplia, luminosa y con filtro fluorescente de vacío de 4
x 20
g Muestra los valores calculados
g Accede a los puntos de ajuste
g Alimentado por unidad de control
g Montaje en panel o se integra directamente en la unidad de
control
g Montaje remoto (longitud de enlace máxima de 1,2 km o 4000 ft)
g Tamaño DIN 1/2
g Ubicación peligrosa certificada
2 Unidad de control (MPS-CTU)
g Entradas de corriente—Transformadores de corriente secundario
de fase de 5 A o 1 A
g Entradas de voltaje—hasta de 600 V sin PT
g Entrada de filtración de conexión a tierra—Transformador sensible
o secundario de 5 A o 1 A
g Entrada de tacómetro (impulsos de alta velocidad)
g 8 entradas digitales, 5 salidas de relevador, 1 entrada y 1 salida
analógicas
g Alimentación de 24-V CC para módulos OPI y RTD, y para
entradas digitales
g Entrada para código de tiempo IRIG-B
g Tamaño DIN 1/2, montaje en superficie
g Comunicaciones por red RS-485 (Estándar)
g Comunicaciones DeviceNet™, Profibus® o Ethernet disponibles
Transformadores de corriente de fase
Los transformadores de corriente (CT) son necesarios
para detectar las corrientes de fase.
Transformador de corriente para fallas de conexión
a tierra
El transformador de corriente de secuencia cero
detecta la corriente con fallas de conexión a tierra.
Disponible con clasificaciones nominales de 5 A y
30 A para captación de nivel bajo.
Módulo de entrada de temperatura MPS-RTD
El módulo opcional proporciona 8 entradas para
conectar unidades Pt100, Ni100, Ni120, y Cu10 RTD.
Módulo de corriente diferencial MPS-DIF
Protección de diferencial de motor opcional,
compatible con conexiones de transformador de
corriente finales y de balance central.
B
C
Accesorios
A
ACCESORIOS REQUISITOS
MPS-OPI-01-00 Recomendado
CT de fase Requerido
CT de fallas de conexión a tierra Recomendado
MPS-RTD-01-00 Opcional
MPS-DIF-01-00 Opcional
SE-IP65CVR-M Opcional
NÚMERO DE PEDIDO COMUNICACIONES
MPS-CTU-01-00 RS-485
MPS-CTU-02-00 RS-485 y DeviceNet™
MPS-CTU-03-00 RS-485 y Profibus®
MPS-CTU-04-00 RS-485 y EtherNet/IP™ y TCP Modbus®
Información para pedir
Diagrama de circuitos simplificado
CT DE FASE
CT DE FASE
CT DE FASE GF CT
MPU-CIM MPS-RTD
RTD x 8
L2
L1
MPU-32
M
(Módulo de entrada de corriente)
(Relevador de seguridad para motores)
CT DE FASE
CT DE FASE
CT DE FASE GF CT
L2
MPS-CTU L1
M
MPS-RTD
MPS-OPI
RTD x 8
(Unidad de control)
(Módulo de entrada
de temperatura)
(Módulo de entrada
de temperatura)
(Interfaz del operador)
1
2
B
C
A
D
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 99
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/mps
Protección del motor–Avanzada
Diagrama de conexiones
VOLTAJES
DE FASE
MPS-CTU
UNIDAD DE CONTROL
SALIDAS DEL
RELEVADOR
MÓDULO DE E/S
ENTRADAS
DIGITALES
ENTRADA
ANALÓGICA
DE 4-20 mA
+
SALIDA
ANALÓGICA
4-20 mA
+
39 40
53 52
43 51 ...... 5 16 ...... 1 2
20 17 60 56 ...... 33 22
CONTROL DE
ALIMENTACIÓN
RS-485
35 37 ......
30 29 27 26 23 22
TRANSFORMADORES
DE CORRIENTE DE FASE
TRANSFORMADOR
DE CORRIENTE
PARA FALLAS DE
CONEXIÓN A TIERRA
Interfaz del
operador
MPS-OPI
(Recomendado)
(obligatorio) (obligatorio)
MPS-RTD
MÓDULO RTD
(opcional)
(opcional)
MPS-DIF
MÓDULO
DIFERENCIAL
A B
C
D
1
2
Especificaciones
Funciones de protección
(Números de
dispositivo IEEE)
Voltaje de entrada 65-265 V CA, 25 VA; 80-275 V CC, 25 W
Tiempo de disparo 800 ms a 120 V CA
Tiempo de ajuste de
la protección 100 ms, mínimo
Fuente de 24 V CC 100 mA, máximo
Mediciones CA RMS y DFT reales, ciclo/muestra pico de 16 y secuencia básica
negativa y positiva
Frecuencia 50, 60 Hz o ASD
Entradas Corriente de fase, corriente de filtración de conexión a tierra,
voltaje de fase, 7 digitales, tacómetro, 1 analógico
Contactos de salida 5 contactos — Ver manual del producto
Aprobaciones certificado de CSA, RCM (Australiana), reconocido por UL
Comunicaciones Allen-Bradley® DFI y Modbus® RTU (Estándar);DeviceNet™,
Profibus®, Ethernet (opcional)
Terminado general Característica estándar
Garantía 10 años
Montaje
(Unidad de control) Superficie
(Interfaz del operador) Unidad de control de montaje en panel
Sobrecarga (49, 51)
Fase inversa (corriente) (46)
Sobrefrecuencia (81)
Sobrecorriente (50, 51)
Trabas
Baja frecuencia (81)
Averías de conexión a tierra
(50G/N, 51G/N)
Corriente baja (37)
Desbalance (voltaje) (47)
Averías de aceleración
Temperatura de RTD (38, 49)
Desbalance (corriente) (46)
Velocidad baja (14)
Encendido por horas (66)
Pérdida de fase (voltaje) (47)
Sobrevoltaje (59)
Diferencial (87)
Pérdida de fase (corriente) (46)
Bajo voltaje (27)
Fase inversa (voltaje) (47)
Factor de alimentación (55)
Características y beneficios
CARACTERÍSTICAS IEEE # BENEFICIOS
Sobrecarga 49, 51 Aumenta la vida útil del motor y previene incendios y fallas del aislamiento
Desbalance de corriente/
Pérdida de fase/Fase inversa 46 Previene el sobrecalentamiento y aumenta la vida útil del motor
Sobrecorriente/Atascamiento 50, 51 Previene incendios y fallas catastróficas y aumenta la vida útil del motor
Corriente baja 37 Detecta niveles bajos o condiciones de carga insuficiente
Averías de conexión a tierra 50g/N, 51G/N Previene incendios y fallas catastróficas
Temperatura RTD 38, 49 Protección de temperatura RTD (módulo MPS-RTD) para protección en entornos severos o por pérdida de ventilación
Sobrevoltaje 59 Previene la tensión por aislamiento
Bajo voltaje 27 Previene intentos de encendido cuando el motor está dañado
Desbalance de voltaje 47 Detecta voltaje de alimentación inestable
Diferencial de fase 87 Proporciona protección de alta sensibilidad para fallas en bobinado de resistencia alta
Modo térmico dinámico Brinda protección durante los ciclos de encendido, funcionamiento, y enfriamiento
Modo de sobrecorriente reducida Minimiza los riesgos por arco eléctrico durante el mantenimiento
Control de encendido Simplifica la instalación reduciendo el conteo de componentes
Medición Muestra los parámetros del motor calculados y procesados
Registro de datos Grabadora de 64 eventos integrada que ayuda en la realización de diagnósticos del sistema
Comunicaciones Análisis remoto de los valores calculados, registros de eventos y restablecimiento de activaciones
Terminado general Los circuitos internos están con terminado general para proteger contra la humedad y la corrosión
SERIE MPS (PGR-6300)
Relevadores de protección
100 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/mpu-32-X69X, www.littelfuse.com/mps-469X
Retroadaptaciones de relevador para protección del motor
SERIE MPU-32-X69X (PGR-6210)/SERIE MPS-469X (PGR-6310)
Kits de retroadaptación para protección del motor
Descripción
Los kits de renovación de Littelfuse Startco son una excelente opción
para mejorar la protección del motor, ya que brindan protección de
corriente y temperatura, medición, y registro de datos.
1 MPU-32-X69X
El kit de retroadaptación para protección del motor MPU-32-X69X
está diseñado para relevadores GE Multilin 169, 269 y 369. Incluye
el relevador de seguridad de motor MPU-32, módulo de entrada de
corriente MPU-CIM, y módulos de entrada de temperatura MPS-RTD
opcionales, que están precableados. El kit se adapta al espacio real
y generalmente pueden utilizarse en transformadores de corriente y
conexiones para simplificar el procedimiento de actualización.
2 MPS-469X
El kit de retroadaptación para protección de motor MPS-469X
reemplaza el relevador GE Multilin 469. Incluye el sistema de
protección de motor MPS y RTD opcional y los módulos de
diferencial montados en un panel que puede instalarse en
cortacircuitos 469 existentes. Se puede utilizar el transformador de
corriente y las conexiones actuales, que simplifica la actualización.
Parte
frontal
Parte
frontal
MPU-32-X69X
MPS-469X
Parte
posterior
Parte
posterior
Información para pedir del MPU-32-X69X
ENTRADAS RTD COMUNICACIONES MPU-32 CT DE FALLAS DE CONEXIÓN A TIERRA OPCIONES FUTURAS
MPU-32-X69X – X X X 00
0 = Un Platinum de 100 Ω 0 = TIA232 0 = Cableado para CT de fallas de conexión a tierra de alta
sensibilidad (secundario de 50 mA)
1 = Un Platinum de 100 Ω y
entrada de 8 puertos
Módulo MPS-RTD
1 = TIA232 y TIA485 1 = Cableado para CT de fallas de conexión a tierra secundarios
de 1 A o 5 A
2 = TIA232 y DeviceNet
4 = TIA232 y Ethernet
Información para pedir de MPS-469X
CONFIGURACIÓN DEL MODELO COMUNICACIONES MPS OPCIONES FUTURAS
MPS-469X – X X 000
0 = Ninguno 1 = RS485
1 = Un módulo MPS-RTD 2 = RS485 y DeviceNet
2 = Dos módulos MPS-RTD 3 = RS485 y Profibus
3 = Un módulo MPS-DIF 4 = RS485 y Ethernet
4 = Un módulo MPS-RTD y un módulo MPS-DIF
1
2
CARACTERÍSTICAS BENEFICIOS
Montaje Se adapta a los orificios de montaje y aperturas de panel existentes
Instalación rápida Los CT y RTD existentes se pueden utilizar para reducir el tiempo de
instalación
Probado desde la fábrica Componentes preensamblados probados al 100 % en la fábrica para
garantizar su fiabilidad
Comunicaciones Incorpora capacidades de comunicación con mecanismos de control antiguos
y mejora el desempeño del sistema
Basado en
microprocesador No requiere de calibración que reduce costos de mantenimiento
Modo de sobrecorriente
reducida
Configuración de modo de mantenimiento para reducir el riesgo de peligros
por arco eléctrico
Terminado general Protege las placas de circuitos contra la corrosión y la humedad
Protección adicional Funciones de protección adicionales, incluyendo el modelo térmico dinámico y
la capacidad de adaptarse a las curvas de sobrecorriente existentes
Características y beneficios
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 101
PROTECCIÓN DE MOTORES Y BOMBAS
7
Protección de motores y bombas Conocimientos aplicados | Respuestas entregadas
Descripción
Los productos monofásicos 111-Insider-P de Littelfuse se adaptan en
estaciones de ¹⁄³ y ½, tableros de control de 115 V y el 231-Insider-P se
adapta en estaciones de ¹⁄³ ½, ¾, y tableros de control de 1 HP, 230 V.
Ambos modelos están diseñados para proteger bombas monofásicas
contra condiciones de abatimiento (pozo seco), restricciones de flujo
o válvula cerrada, impulsor atascado, ciclo rápido, y alto voltaje/bajo
voltaje.
Un ajuste de calibración permite calibrar el Insider según
especificaciones de bombeo específicas, reduciendo así la posibilidad
de activaciones falsas o interrupciones no deseadas. Un circuito
de detección de corriente y voltaje basado en un microprocesador
monitorea constantemente la energía entrante para detectar
fluctuaciones, sobrecorriente y corriente baja. En caso de anomalías,
se puede detectar dicha pérdida de succión, el producto desactiva
su relevador de salida y se desconecta directamente del motor
de la bomba. La unidad luego acciona su temporizador de retardo
para restablecimiento configurable por el usuario (recuperación de
abatimiento [pozo seco]). Cuando el temporizador llega a cero o si se
vuelve a suministrar energía, la unidad reactiva su relevador de salida
y enciende la bomba nuevamente. Al girar la perilla de retardo en
restablecimiento en la posición “restablecer”, la unidad funcionará en
modo de restablecimiento manual.
El Insider se comunica con una herramienta de diagnóstico portátil
llamada Informer (se vende por separado). El Informer muestra
parámetros incluyendo puntos de calibración, puntos de disparo,
tiempo de ejecución y las fallas más recientes. Se incluye un Kit-12
infrarrojo (kit de fibra óptica de 12") con cada Insider, permitiéndole al
Informer acceder a estos parámetros incluso cuando el Insider está
incorporado en un tablero de control. Esto es crucial para la resolución
de problemas en la bomba durante su funcionamiento.
NOTA: Los modelos 111/231-Insider-P tienen un ajuste de la sensibilidad para el punto de disparo para
abatimiento (pozo seco). Luego de la calibración, se puede ajustar la sensibilidad para el punto de
disparo para abatimiento (pozo seco) de 70 %-90 % de la carga completa. Esto permite que la unidad sea
más adaptable a aplicaciones de bombeo variables. Si la fuente tiene poca producción, se aumenta la
sensibilidad cerca del 90 %, o si la fuente tiene alta producción, se disminuiría la sensibilidad en un 70 %
aproximadamente.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito propietario basado
en microcontrolador
El monitoreo constante del voltaje y la corriente protege las
bombas contra fallas por abatimiento (pozo seco),
restricciones de flujo o válvula cerrada, impulsor atascado,
ciclo rápido, y alto voltaje/bajo voltaje
Ajuste de la sensibilidad
integrada
Permite al usuario ajustar la sensibilidad para el punto de
disparo por abatimiento (pozo seco) de 70 %-90 % de la
carga completa.
Retardo de
restablecimiento ajustable
Permite al usuario seleccionar el retardo de tiempo de
recuperación del pozo luego de ocurrir una condición de
abatimiento (pozo seco), o para elegir el restablecimiento
manual
Enlace de comunicaciones
IR integrado
Se utiliza con el Informer, y permite al usuario ver las fallas
almacenadas, el tiempo de ejecución y también solucionar
problemas de la bomba durante su funcionamiento
Indicación LED Proporciona el estado y diagnóstico para la resolución
de problemas
Diagrama de conexiones
Ver página siguiente.
Accesorios
Informer
Una herramienta de diagnóstico portátil que utiliza un
receptor infrarrojo para acceder a información que puede
ser útil para solucionar problemas en el sistema. Incluye
el Informer IR Kit-12.
Informer IR Kit-12
El cable del adaptador infrarrojo de 12" se conecta en la
parte frontal de la unidad para brindar diagnóstico remoto
sin abrir el panel. Incluido con el Informer
Información para pedir
MODELO VOLTAJE DESCRIPCIÓN
111-Insider-P 115 V CA ¹⁄³
-½ HP, incluye el Kit-12 infrarrojo
231-Insider-P 230 V CA ¹⁄³
-1 HP, incluye el Kit-12 infrarrojo
111-INSIDER-P/231-INSIDER-P
Monitor para bombas monofásicas
www.littelfuse.com/111insiderp-231insiderp
Relevadores de protección
102 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/111insiderp-231insiderp
Especificaciones
Especificaciones funcionales
Ajustes/Configuraciones
Sobrecorriente 125 % del punto de calibración
Carga insuficiente (abatimiento
[pozo seco]) Ajustable (70 a 90 % de la energía de ejecución
calibrada)
Sobrevoltaje
111-Insider-P 132,5 V CA
231-Insider-P 265 V CA
Bajo voltaje
111-Insider-P 95 V CA
231-Insider-P 190 V CA
Número de restablecimientos
permitidos en un período de 60 s
(ciclo rápido) 4
Tiempos de retardo de disparo
Sobrecorriente 5 s
Abatimiento (pozo seco) de 4 s
Tiempos de retardo
de restablecimiento
Sobrevoltaje/Bajo voltaje 2 s
Todas las demás fallas Manual, 2-225 min
111-INSIDER-P/231-INSIDER-P
MODELO 231/111
INSIDER-P
AZUL
RELEVADOR
DE VOLTAJE
ROJO
AMARILLO
B(PRINCIPAL) Y(COM.) R(INICIO)
NEGRO NARANJA
NARANJA
ROJO
FIGURE 5: Pentek® Control Box with the PumpSaver
®
Plus Installed
DIAGRAMA DE CONEXIONES PARA TABLERO DE CONTROL PENTEK® DIAGRAMA DE CONEXIONES PARA TABLERO DE CONTROL FRANKLIN™
111-Insider-P/231-Insider-P
in Franklin™ Control Box
INTERRUPTOR DE
ESTADO SÓLIDO
B(PRINCIPAL) Y(COM.)
NEGRO
ROJO
NARANJA
AMARILLO
R(INICIO) L2 L1
AZUL 111/231
INSIDER-P
Diagrama de conexiones
Características de entrada
Voltaje de alimentación
111-Insider-P 115 V CA
231-Insider-P 230 V CA
Rango de carga
111-Insider-P ¹⁄³
– ½ HP
231-Insider-P ¹⁄³
– 1 HP
Frecuencia 50*/60 Hz
Características de salida
Clasificación nominal de
contacto de salida SPST
111-Insider-P ½ HP a 120 V CA (17 amperios, máximo)
231-Insider-P 1 HP a 240 V CA (17 amperios, máximo)
Características generales
Temperatura de funcionamiento -40 °C a 60 °C (-40 °F a 140 °F)
Potencia de entrada máxima 5 W
Marcas de seguridad
cUR** UL508, C22.2 Nro. 14
Peso 10 oz
Métodos de montaje Integrados con tableros de control Pentek®,
Franklin™, CentriPro™, Flint and Walling™ y
Grundfos®***
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
**Los módulos 111-Insider-P y 231-Insider-P tienen aprobación UL para utilizar en tableros de control 3R
Franklin™, Pentek®, y CentriPro™ al ser instalados tal como se indica en las instrucciones de instalación. Los
módulos 111-Insider-P y 231-Insider-P no fueron diseñados para brindar protección de sobrecarga, y deberían
utilizarse únicamente con motores protegidos contra impedancia o térmicamente aislados.
***Tableros de control Grundfos fabricados después del segundo semestre de 2014.
Protección de motores y bombas
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 103
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
111-INSIDER-P/231-INSIDER-P
DIAGRAMA DE CONEXIONES PARA TABLERO DE CONTROL FLINT AND WALLING™
CAPACITOR NARANJA
AZUL
NEGRO
5 AMARILLO 231/111
INSIDER-P
RELEVADOR
DE VOLTAJE
1 2
AMARILLO ROJO
B(PRINCIPAL) Y(COM.) R(INICIO) L2 L1
FIGURE 9: Flint and Walling™ Control Box with the PumpSaver
®
Plus Installed
DIAGRAMA DE CONEXIONES PARA TABLERO DE CONTROL CENTRIPRO™
RELEVADOR
DE VOLTAJE
B(PRINCIPAL) Y(COM.)
NEGRO
NARANJA
R(INICIO) L2 L1
AZUL
231/111
INSIDER-P
ROJO AMARILLO AMARILLO
FIGURE 7: CentriPro™ Control Box with the PumpSaver
®
Plus Installed
DIAGRAMA DE CONEXIONES PARA TABLERO DE CONTROL GRUNDFOS®*
Grundfos® Control Box with the PumpSaver
®
Plus Installed
CAPACITOR NARANJA
AZUL
NEGRO
5
1
2
AMARILLO
AMARILLO
ROJO
B(PRINCIPAL) Y(COM.) R(INICIO) L2 L1
MODEL 231/111
INSIDER-P
NEGRO
RELEVADOR
DE VOLTAJE
Para instrucciones de instalación, consulte el catálogo de bombeo de agua fresca en
www.Littelfuse.com/PumpProtection
Protección de motores y bombas
www.littelfuse.com/111insiderp-231insiderp
* Para tableros fabricados a partir del segundo semestre de 2014.
Ver 232-INSIDER en la página siguiente para conocer los modelos de tablero fabricados antes de 2014.
Relevadores de protección
104 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
232-INSIDER
Monitor para bombas monofásicas
Descripción
El Modelo 232-Insider monofásico de PumpSaver® cabe dentro de las
cajas de control Grundfos de ¹/3, 1/2, 3/4, y 1 HP, 230 V fabricadas antes de
mediados de 2014. El Modelo 232-Insider PumpSaver® es un monitor de
bomba diseñado para proteger bombas monofásicas contra condiciones
de abatimiento (pozo seco), restricciones de flujo o válvula cerrada,
impulsor atascado, ciclo rápido, y alto voltaje/bajo voltaje. Algunas
aplicaciones típicas incluyen pozos sépticos residenciales, pozos
sépticos comerciales, pozos de riego, y sistemas de riego para campos
de golf.
Un ajuste de calibración permite calibrar el 232-Insider según
especificaciones de bombeo específicas, reduciendo así la posibilidad
de activaciones falsas o interrupciones no deseadas. Un circuito
de detección de corriente y voltaje basado en un microprocesador
monitorea constantemente la energía entrante para detectar
fluctuaciones, sobrecorriente y corriente baja. En caso de anomalías,
se puede detectar dicha pérdida de succión, el 232-Insider desactiva
su relevador de salida y se desconecta directamente del motor de la
bomba. El 232-Insider luego acciona su temporizador de retardo para
restablecimiento configurable por el usuario (recuperación de pozo
seco). Cuando el temporizador llega a cero o si se vuelve a suministrar
energía, el 232-Insider reactiva su relevador de salida y enciende la
bomba nuevamente. Al girar la perilla de retardo en restablecimiento
en la posición “restablecer”, el 232-Insider funcionará en modo de
restablecimiento manual.
El Insider se comunica con una herramienta de diagnóstico portátil
llamada Informer (se vende por separado). El Informer muestra
parámetros incluyendo puntos de calibración, puntos de disparo, tiempo
de ejecución y las fallas más recientes. Esto es crucial para la resolución
de problemas en la bomba durante su funcionamiento.
Nota: El uso de limitadores de flujo o presiones de entrada inusualmente altas en el momento de la calibración
puede interferir con la detección de las condiciones de restricción del flujo. Comuníquese con Littelfuse para
obtener información sobre los productos que se ajustan a estas aplicaciones.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
El monitoreo constante del voltaje y la corriente protege las
bombas contra fallas por abatimiento (pozo seco), restricciones
de flujo o válvula cerrada, impulsor atascado, ciclo rápido, y alto
voltaje/bajo voltaje
Retardo de
restablecimiento ajustable
Permite al usuario seleccionar el retardo de tiempo de
recuperación del pozo luego de ocurrir una condición de
abatimiento (pozo seco), o para elegir el restablecimiento manual
Enlace de comunicaciones
IR integrado
Se utiliza con el Informer, y permite al usuario ver las fallas
almacenadas, el tiempo de ejecución y también solucionar
problemas de la bomba durante su funcionamiento
Indicación LED Proporciona el estado y diagnóstico para la resolución de
problemas
Accesorios
Informer
Una herramienta de diagnóstico portátil que utiliza un
receptor infrarrojo para acceder a información que puede
ser útil para solucionar problemas en el sistema.
Diagrama de conexiones
NEGRO
NEGRO NARANJA
AMARILLO
CAPACITOR
ROJO
YEL AMARILLO
RELEVADOR
L1 L2* Y R B
*Nota: Mueva el cable amarillo corto desde la terminal L2 a 90° hacia la terminal L2 a 45°.
232-Insider
1/3 to 1hp @ 230VAC
RESTART DELAY/CAL.
(MINS.)
800-843-8848
MADE INUSA E68520 MODEL 232-INSIDER
CONEXIONES 232-INSIDER EN TABLERO DE CONTROL GRUNDFOS®
Para obtener instrucciones de instalación, consulte el Manual de instalación.
Protección de motores y bombas
www.littelfuse.com/232insider
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 105
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/232insider
232-INSIDER
Especificaciones
Funcional
Ajustes/Configuraciones
Sobrecorriente 125 % del punto de calibración
Carga insuficiente (pozo seco) Aproximadamente 80 % del punto de
calibración
Carga insuficiente (pozo seco)
con cable de empalme de
alta sensibilidad Aproximadamente 87 % del punto de
calibración
Sobrevoltaje 265 V CA
Voltaje bajo 190 V CA
Tiempos de retardo de disparo
Sobrecorriente 5 s
Pozo seco 4 s
Tiempos de retardo de restablecimiento
Sobrevoltaje/Bajo voltaje 2 s
Todas las demás fallas
(temporizador de recuperación
de pozo seco) Manual, 2-225 minutos
Características de entrada
Voltaje de alimentación 230 V CA
Rango de carga ¹⁄3 – 1 HP
Frecuencia 50*/60 Hz
Características de salida
Clasificación nominal de contacto
de salida SPST 1 HP a 240 V CA (17 amperios, máximo)
Características generales
Temperatura de funcionamiento -40 °C a 60 °C (-40 °F a 140 °F)
Potencia de entrada máxima 5 W
Marcas de seguridad
UL UL508
CSA C22.2 Nro. 14
Peso 10 oz
Métodos de montaje Grundfos® Tablero de control fabricado antes
del segundo semestre de 2014
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
Protección de motores y bombas
Relevadores de protección
106 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/111p-233p
Protección de motores y bombas
SERIE 111P/233P/233P-1.5
Monofásico PumpSaver®
Descripción
Los Modelos 111P de Littelfuse (115 voltios, ¹⁄³ a 1 HP); 233P-1.5
(230 voltios, ¹⁄³ a 1,5 HP); y 233P (230 voltios, ¹⁄³ a 3 HP) protegen las
bombas contra condiciones de abatimiento (pozo seco), restricciones de
flujo o válvula cerrada, impulsor atascado, ciclo rápido, y alto voltaje/bajo
voltaje independientemente de si el interruptor de presión es instalado
previa o posteriormente a nuestra unidad.
Un ajuste de calibración permite calibrar la unidad según
especificaciones de bombeo específicas, reduciendo así la posibilidad
de activaciones falsas o interrupciones no deseadas. Un circuito
de detección de corriente y voltaje basado en un microprocesador
monitorea constantemente la energía entrante para detectar
fluctuaciones, sobrecorriente y corriente baja. En caso de anomalías,
se puede detectar dicha pérdida de succión, la unidad desactiva
su relevador de salida y se desconecta directamente del motor
de la bomba. La unidad luego acciona su temporizador de retardo
para restablecimiento configurable por el usuario (recuperación de
abatimiento [pozo seco]). Cuando el temporizador llega a cero o si se
vuelve a suministrar energía, la unidad reactiva su relevador de salida y
enciende la bomba nuevamente.
El módulo infrarrojo LED se comunica con una herramienta de
diagnóstico portátil llamada Informer (se vende por separado). El
Informer muestra parámetros incluyendo puntos de calibración, puntos
de disparo, tiempo de ejecución y las fallas más recientes.
Consideraciones especiales para cables de bomba más grandes que
n.º 10 AWG: en algunos casos donde se instalan motores más grandes
con conjuntos de bombas profundas, se utilizan cables de bomba que
superan el tamaño del terminal del relevadores. En tales condiciones, un
empalme corto de n.º 10 AWG o n.º 12 AWG podría ser una solución en
el tablero de control. Nota: Se debe cumplir con todos los parámetros
eléctricos nacionales, locales y estatales al implementar la solución.
NOTA: Los modelos 111P/233P/233P-1.5 tienen un ajuste de la sensibilidad para el punto de disparo en pozo
seco. Luego de la calibración, se puede ajustar la sensibilidad para el punto de disparo para abatimiento (pozo
seco) de 70 %-90 % de la carga completa. Esto permite que la unidad sea más adaptable a aplicaciones de
bombeo variables. Si la fuente tiene poca producción, se aumenta la sensibilidad cerca del 90 %, o si la fuente
tiene alta producción, se disminuiría la sensibilidad en un 70 % aproximadamente.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante del voltaje, factor de potencia, y
corriente para protección de bombas
Proceso de calibración
integrado
Calibra la unidad según la aplicación de bombeo específica y
reduce las interrupciones no deseadas
Ajuste de la sensibilidad
integrada
La perilla de sensibilidad ajustable por el usuario permite que
la unidad se adapta a diversas aplicaciones de bombeo
Accesorios
Informer
Una herramienta de diagnóstico portátil que utiliza un
receptor infrarrojo para acceder a información que puede
ser útil para solucionar problemas en el sistema.
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN
111P 115 V CA Rango de carga: ¹⁄³
- 1hp
111P-ENCL 115 V CA 111P con carcasa NEMA3R
233P 230 V CA Rango de carga: ¹⁄³
- 3hp
233P-ENCL 230 V CA 233P con carcasa NEMA3R
233P-1.5 230 V CA Rango de carga: ¹⁄³
- 1.5hp
233P-1.5-ENCL 230 V CA 233P-1.5 con carcasa NEMA3R
DEBE TENER PROTECCIÓN CONTRA
CORTOCIRCUITOS
MÁXIMA FUSIBLE 30 A RK5 O
CONMUTADOR DE TIEMPO INVERSO
DE 30 A
INTERRUPTOR DE
PRESIÓN
U OTRO CONTROL
INTERRUPTOR DE
PRESIÓN
U OTRO CONTROL
UN INTERRUPTOR DE PRESIÓN
PUEDE SER INSTALADO ANTES O
DESPUÉS DEL PUMPSAVER® PLUS
PARA MOTORES
PROTEGIDOS
TÉRMICAMENTE O
CONTRA IMPEDANCIA
TABLERO DE
CONTROL
(SEGÚN SEA
NECESARIO)
Para conocer el plano de dimensiones, consulte: Apéndice, página 511, Figura 15.
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 107
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
SERIE 111P/233P/233P-1.5
Especificaciones
Especificaciones funcionales
Ajustes/Configuraciones
Sobrecorriente 125 % del punto de calibración
Carga insuficiente (pozo seco) Ajustable (70 a 90 % de la energía de ejecución
calibrada)
Sobrevoltaje
111P 132,5 V CA
233P, 233P-1.5 265 V CA
Bajo voltaje
111P 95 V CA
233P, 233P-1.5 190 V CA
Número de restablecimientos
permitidos en un período
de 60 s (ciclo rápido) 4
Tiempos de retardo de disparo
Sobrecorriente 5 s
Abatimiento (pozo seco) de 4 s
Tiempos de retardo
de restablecimiento
Sobrevoltaje/Bajo voltaje 2 s
Todas las demás fallas Manual, 2 a 225 minutos
Características de entrada
Voltaje de alimentación
111P 115 V CA
233P-1.5, 233P 230 V CA
Rango de carga:
111P ¹⁄³
– 1 HP
233P-1.5 ¹⁄³
– 1,5 HP
233P ¹⁄³
– 3 HP
Frecuencia 50*/60 Hz
Características de salida
Clasificación nominal de
contacto de salida SPST
111P 1 HP a 120 V CA (16 amperios, máximo)
233P-1.5 1,5 HP a 240 V CA (10 amperios, máximo)
233P 3 HP a 240 V CA (17 amperios, máximo)
Características generales
Temperatura de funcionamiento -40 °C a 60 °C (-40 °F a 140 °F)
Potencia de entrada máxima 5 W
Calibre del cable Sólido o trenzado 10-22 AWG
Torque del terminal 13 libras por pulgada.
Marcas de seguridad
Certificación cUL UL508, C22.2 Nro. 14
Dimensiones H 73,66 mm (2,9"); A 133,35 mm (5,25");
P 73,99 mm (2,913")
Peso 0,4 kg (14 oz)
Métodos de montaje tornillos n.º 8
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
Protección de motores y bombas
www.littelfuse.com/111p-233p
Relevadores de protección
108 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
234-P
Descripción
El modelo PumpSaver® 234-P está diseñado para instalarse al interior de
un módulo de control GrundfosR para proteger cables calibre 1/3 – 3hp,
2 o de 3, en bombas de 230V.
El modelo 234-P protege las bombas monofásicas contra condiciones
de abatimiento (pozo seco), ciclos rápidos, impulsores atorados, y
sobretensión o sobrevoltaje sobrevoltaje. Algunas aplicaciones típicas
incluyen pozos residenciales, pozos de uso comercial, sistemas de
riego, y campos de golf y otros sistemas de aspersión.
El ajuste de la calibración permite calibrar el equipo 234-P según la
aplicación de bombeo en específico, reduciendo así la posibilidad
de activaciones falsas o perjudiciales. Un circuito único basado en
microcontroladores para detectar voltaje y corrientes monitorea
constantemente la energía entrante para identificar variaciones,
sobretensión, y pérdidas de voltaje. Al identificar una anomalía, tal como
una pérdida de succión, el 234-P desactiva su relevador de salida y
desconecta directamente el motor de la bomba. Luego, el 234-P activa
el temporizador de retraso para restablecimiento elegido por el usuario
(recuperación de abatimiento). Una vez que el temporizador llega a cero,
o si se corta la energía y es suministrada de nuevo, el 234-P desactiva
su relevador de salida y enciende la bomba nuevamente. Al dejar la
perilla de retrado para restablecimiento en la posición de reinicio, el 234-
P operará en modo de restablecimiento manual.
El 234-P se comunica con una herramiento de diagnóstico portátil
denominada Informer (se vende por separado). El Informer muestra los
parámetros, incluidos los puntos de calibración, puntos de activación,
tiempo de ejecución y las fallas más recientes. Un kit infrarrojo IR 12 (kit
de fibra óptica 12” permite que el Informer acceda a estos parámetros
incluso cuando el 234-P está incorporado en un módulo de control. Esta
función es importante para resolver problemas en la bomba mientras
ésta opera.
NOTA: Los modelos PumpSaver* tienen un ajuste de la sensibilidad para el punto de disparo en
pozo seco. Luego de la calibración, se puede ajustar la sensibilidad para el punto de disparo para
abatimiento (pozo seco) de 70 %-90 % de la carga completa. Esto permite que la unidad sea más
adaptable a aplicaciones de bombeo variables. Si la fuente tiene poca producción, se aumenta la
sensibilidad cerca del 90 %, o si la fuente tiene alta producción, se disminuiría la sensibilidad en
un 70 % aproximadamente.
No se recomienda el uso del modelo 234-P con unidades de control Deluze Grundfos®.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador
del propietario
El monitoreo constante del voltaje y la corriente
protege las bombas contra fallas por abatimiento
(pozo seco), restricciones de flujo o válvula cerrada,
impulsor atascado, ciclo rápido, y alto voltaje/bajo
voltaje
Ajuste de la sensibilidad
integrada
Permite al usuario ajustar la sensibilidad para el
punto de disparo por abatimiento (pozo seco) de 70
%-90 % de la carga completa.
Retardo de
restablecimiento
ajustable
Permite al usuario seleccionar el retardo de tiempo de
recuperación del pozo luego de ocurrir una condición
de abatimiento (pozo seco), o para elegir el
restablecimiento manual
Enlace de
comunicaciones IR
integrado
Se utiliza con el Informer, y permite al usuario ver las
fallas almacenadas, el tiempo de ejecución y también
solucionar problemas de la bomba durante su
funcionamiento
Indicación LED Proporciona el estado y diagnóstico para la resolución
de problemas
Diagrama de conexiones
CAPACITOR DE
ARRANQUE
CAPACITOR DE
OPERACIÓN
RELEVADOR
AMARILLO ROJO
NARANJA
NEGRO
NEGRO
NEGRO
AZUL
SW L1 L2 YEL RED BLK
RESTART DELAY/
1.5 to 3hp at 230VAC
_ +
IR
LINK
AMARILLO
CONEXIONES 234-P EN TABLERO DE CONTROL GRUNDFOS®
Para obtener instrucciones de instalación, consulte el Manual de instalación.
Monitor para bombas monofásicas
Protección de motores y bombas
www.littelfuse.com/234p
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 109
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/234p
234-P
Accesorios
Informer
Una herramienta de diagnóstico portátil que utiliza un
receptor infrarrojo para acceder a información que puede
ser útil para solucionar problemas en el sistema. Incluye
el Informer IR Kit-12.
Informer IR Kit-12
El cable del adaptador infrarrojo de 12" se conecta en la
parte frontal de la unidad para brindar diagnóstico remoto
sin abrir el panel. Incluido con el Informer
Especificaciones
Especificaciones funcionales
Ajustes/Configuraciones
Sobrecorriente 125 % del punto de calibración
Carga insuficiente
(abatimiento [pozo seco]) Ajustable (70 a 90 % de la energía de
ejecución calibrada)
Sobrevoltaje 265 V CA
Bajo voltaje 190 V CA
Número de restablecimientos
permitidos en un período de
60 s (ciclo rápido) 4
Tiempos de retardo de disparo
Sobrecorriente 5 s
Pozo sec 4 s
Tiempos de retardo de restablecimiento
Sobrevoltaje/Bajo voltaje 2 s
Todas las demás fallas
(temporizador de
recuperación de pozo seco) Manual, 2-225 minutos
Características de entrada
Voltaje de alimentación 230 V CA
Rango de carga ¹⁄3 – 1 HP
Frecuencia 50*/60Hz
Características de salida
Clasificación nominal de
contacto de salida SPST 3 HP a 240 V CA (17 amperios, máximo)
Características generales
Temperatura de
funcionamiento -40 °C a 60 °C (-40 °F a 140 °F)
Potencia de entrada máxima 5W
Dimensiones Se ajusta en módulos de control Grundfos®
Peso 0,4 kg (14 oz)
Métodos de montaje Módulo de control Grundfos®
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 2, contacto de 4 kV,
aéreo 6 kV
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
Protección de motores y bombas
Relevadores de protección
110 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/235p
235P
Diagrama de conexiones
Descripción
El Modelo 235P de Littelfuse está diseñado para proteger bombas
monofásicas de 5 a 15 HP, 230 V contra condiciones de abatimiento
(pozo seco), restricciones de flujo o válvula cerrada, impulsor atascado,
ciclo rápido, y alto voltaje/bajo voltaje.
Un ajuste de calibración permite calibrar el 235P según especificaciones
de bombeo específicas, reduciendo así la posibilidad de activaciones
falsas o interrupciones no deseadas. Un circuito de detección
de corriente y voltaje basado en un microcontrolador monitorea
constantemente la energía entrante para detectar fluctuaciones,
sobrecorriente y corriente baja. En caso de anomalías, se puede detectar
dicha pérdida de succión, el 235P desactiva su relevador de salida y
se desconecta directamente del motor de la bomba. La unidad luego
acciona su temporizador de retardo para restablecimiento configurable
por el usuario (recuperación de abatimiento [pozo seco]). Cuando el
temporizador llega a cero o si se vuelve a suministrar energía, la unidad
reactiva su relevador de salida y enciende la bomba nuevamente.
El 235P se comunica con una herramienta de diagnóstico portátil
llamada Informer (se vende por separado). El Informer muestra
parámetros incluyendo puntos de calibración, puntos de disparo, tiempo
de ejecución y las fallas más recientes.
Para el correcto funcionamiento de la unidad, se requiere de un
transformador de corriente externo (se vende por separado).
Consideraciones especiales para cables de bomba más grandes
que n.º 10 AWG: en algunos casos donde se instalan motores más
grandes con conjuntos de bombas profundas, se utilizan cables de
bomba que superan el tamaño del terminal del relevador. En tales
condiciones, un empalme corto de n.º 10 AWG o n.º 12 AWG podría ser
una solución en el tablero de control. Nota: Se debe cumplir con todos
los parámetros eléctricos nacionales, locales y estatales al implementar
la solución.
NOTA: El modelo 235P tiene un ajuste de la sensibilidad para el punto de disparo en pozo seco. Luego de
la calibración, se puede ajustar la sensibilidad para el punto de disparo para abatimiento (pozo seco) de
70 %-90 % de la carga completa. Esto permite que la unidad sea más adaptable a aplicaciones de bombeo
variables. Si la fuente tiene poca producción, se aumenta la sensibilidad cerca del 90 %, o si la fuente tiene alta
producción, se disminuiría la sensibilidad en un 70 % aproximadamente.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado
en microcontrolador del
propietario
El monitoreo constante del voltaje y la corriente protege las
bombas contra fallas por abatimiento (pozo seco),
restricciones de flujo o válvula cerrada, impulsor atascado,
ciclo rápido, y alto voltaje/bajo voltaje
Ajuste de la sensibilidad
integrada
Permite al usuario ajustar la sensibilidad para el punto de
disparo por abatimiento (pozo seco) de 70 %-90 % de la
carga completa.
Retardo de
restablecimiento ajustable
Permite al usuario seleccionar el retardo de tiempo de
recuperación del pozo luego de ocurrir una condición de
abatimiento (pozo seco), o para elegir el restablecimiento
manual
Enlace de comunicaciones
IR integrado
Se utiliza con el Informer, y permite al usuario ver las fallas
almacenadas, el tiempo de ejecución y también solucionar
problemas de la bomba durante su funcionamiento
Indicación LED Proporciona el estado y diagnóstico para la resolución de
problemas
MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN
235P 230 V CA 5 - 15 HP
235P-ENCL 230 V CA 233P con carcasa NEMA3R
Información para pedir
PIEZA* TAMAÑO CORRIENTE (A) RELACIÓN DE LA CORRIENTE CT
CT-0050-D10 5-7,5 HP 27.5 - 42.1 50:5
CT-0075-D10 10 HP 51 75:5
CT-0100-D10 15 HP 75 100:5
* Transformador de corriente, se vende por separado
Model 235P
Muestra la conexión interna
INTERRUPTOR DE PRESIÓN
MOTOR
DE BOMBA
MODELO 235P
EN. SAL.
TRANSFORMADOR DE CORRIENTE
DESCONECTADOR CON FUSIBLE
O INTERRUPTOR AUTOMÁTICO
BOBINA
Monitor para bombas monofásicas
Protección de motores y bombas
Para conocer el plano de dimensiones, consulte: Apéndice, página 511, Figura 15.
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 111
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
235P
Accesorios
Informer
Una herramienta de diagnóstico portátil que utiliza un
receptor infrarrojo para acceder a información que puede
ser útil para solucionar problemas en el sistema. Incluye
el Informer IR Kit-12.
Especificaciones
Especificaciones funcionales
Ajustes/Configuraciones
Sobrecorriente 125 % del punto de calibración
Carga insuficiente (pozo seco) Ajustable (70 a 90 % de la energía de ejecución
calibrada)
Sobrevoltaje 265 V CA
Voltaje bajo 190 V CA
Número de restablecimientos
permitidos en un período
de 60 s (ciclo rápido) 4
Tiempos de retardo de disparo
Sobrecorriente 5 s
Abatimiento (pozo seco) de 4 s
Tiempos de retardo
de restablecimiento
Sobrevoltaje/Bajo voltaje 2 s
Todas las demás fallas Manual, 2 a 225 minutos
Características de entrada
Voltaje de alimentación 230 V CA
Rango de carga 5-15 HP
Frecuencia 50*/60 Hz
Características de salida
Clasificación nominal de
contacto de salida SPST A300, 720 A a 240 V CA (10 amperios, máximo)
Características generales
Temperatura de funcionamiento -40 °C a 60 °C (-40 °F a 140 °F)
Potencia de entrada máxima 5 W
Calibre del cable Sólido o trenzado 10-22 AWG
Torque del terminal 13 libras por pulgada.
Marcas de seguridad
Certificación cUL UL508, C22.2 Nro. 14
Dimensiones H 73,66 mm (2,9"); A 133,35 mm (5,25");
P 73,99 mm (2,913")
Peso 0,4 kg (14 oz)
Métodos de montaje tornillos n.º 8
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
Dimensiones H 73,66 mm (2,9"); A 133,35 mm (5,25");
P 73,99 mm (2,913")
Peso 0,4 kg (14 oz)
Métodos de montaje tornillos n.º 8
Protección de motores y bombas
www.littelfuse.com/235p
Relevadores de protección
112 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas Protección de bombas y motores – Protección de motor trifásico
www.littelfuse.com/mp8000
SERIE MP8000
Descripción
El MP8000 consta de relevadores de sobrecarga electrónicos para
protección de motores avanzada, completamente programables
por Bluetooth® utilizando un teléfono inteligente o tableta iPhone®
o Android™ con la aplicación Littelfuse instalada. Fácil de utilizar y
aumenta la seguridad contra arco eléctrico ya que la aplicación permite
realizar configuraciones y analizar información operativa en tiempo real.
Para visualizar la información operativa y las fallas en la aplicación no es
necesario que el usuario abra el panel de control.
El MP8000 protege cualquier disposición de motor de carga completa
por 0,5-1000 amperios (se requiere de CT externos de 100 amperios,
mínimo). Está diseñado para sistemas monofásicos o trifásicos con
voltajes de funcionamiento de 90-690 V CA (el uso de transformadores
de potencial externos puede aumentar el rango de voltaje superior por
690 V CA). Algunas aplicaciones comunes incluyen sistemas de bandas
transportadoras, equipos de HVAC, sierras eléctricas y amoladoras,
motores de ventilación y casi cualquier aplicación de bombeo.
La protección es insuperable al combinar sobrecarga, voltaje, pérdida
de fase e inversión, desbalance de voltaje y corriente, monitoreo de
la potencia, y carga insuficiente en un solo paquete. Para aplicaciones
individuales, la interfaz Bluetooth® se puede utilizar para sincronizar
con un teléfono inteligente o tableta. Las unidades también integran
un puerto de comunicaciones Ethernet que puede utilizarse para
formar una red TCP/IP Ethernet Modbus. Las unidades pueden ser
monitoreadas y controladas remotamente desde una computadora, o
un sistema SCADA, y registrar datos por medio de una computadora
con el software Solutions opcional u otro software utilizando el mapa
de memoria del MP8000. Esta función permite que a través de una
solución simple y económica se aumente la seguridad contra arco
eléctrico.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Interfaz Bluetooth®
Indicación visual para programación, visualización de voltaje o
corriente en tiempo real, e información sobre las fallas más
recientes (fecha y hora indicadas)
Configuraciones de
corriente y voltaje
programables
Permite utilizar el equipo en un amplio rango de sistemas
3 opciones de
restablecimiento
seleccionables
Elija entre automático, semiautomático, o manual para
adaptarse mejor a las necesidades de cada aplicación
4 temporizadores de
retardo programables
Programe los tiempos de retardo por separado para disparo,
protección de ciclo rápido, enfriamiento del motor, y
restablecimiento de carga baja
Restablecimiento flexible El restablecimiento puede hacerse mediante el pulsador en el
panel, o remotamente en la red
Capacidad de
comunicaciones por red Compatible con Ethernet Modbus TCP/IP
Bluetooth® Monitor de voltaje y corriente trifásico
Diagrama de conexiones
NO
(15)
C
(13)
I.2.
I.1
MP8000
PTC
(OPCIONAL)
RESTABLECER
DESDE A2
PE
C
(95)
L1 L2 L3 A2/L
Z1 Z2 T1 T2
SUMINISTRO DE
VOLTAJE AUXILIAR
FASE A
FASE B
FASE C
100-250 V CA
85-260 V CA
TRANSFORMADOR
DE CORRIENTE DE
SECUENCIA CERO
(OPCIONAL)
A B C
NO
(96)
NC
(14)
C
PILOTO INICIAR C
DETENER
MANUAL AUTOMÁTICO
APAGAR
DESDE A1
M
A1/N
Información para pedir
MODELO VOLTAJE DE LÍNEA RANGO DE AMPERAJE TOTAL DEL MOTOR DESCRIPCIÓN
MP8000
90-690 V CA
(el uso de transformadores de potencial externos
puede aumentar el rango de voltaje superior a más
de 690 V CA)
0,5-1000 A (se requiere de CT externos de 100 A,
mínimo)
Proporciona comunicación por red remota mediante
Ethernet Modbus TCP/IP
MP8100
90-690 V CA
(el uso de transformadores de potencial externos
puede aumentar el rango de voltaje superior a más
de 690 V CA)
0,5-1000 A (se requiere de CT externos de 100 A,
mínimo)
Proporciona comunicación por red remota mediante
Ethernet Modbus TCP/IP, RS485 y estación CAN
Para conocer el plano de dimensiones, consulte: Apéndice, página 516, Figura 50.
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 113
PROTECCIÓN DE MOTORES Y BOMBAS
7
Protección de bombas y motores – Protección de motor trifásico Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/mp8000
SERIE MP8000
Características avanzadas
■ Sobrecarga (Potencia elevada)
■ Carga insuficiente (Potencia insuficiente)
■ Sobrecorriente/Trabas
■ Corriente baja
■ Desbalance de corriente
■ Pérdida de fase
■ Inversión de fase
■ Sobrevoltaje
■ Bajo voltaje
■ Desbalance de voltaje
■ Ciclo rápido/Avance lento
■ Averías del contactor
■ Averías de conexión a tierra de secuencia cero
■ PTC Sobretemperatura del motor
Especificaciones
Características funcionales
Frecuencia 50/60 Hz
Clase de disparo por
sobrecorriente TC Clase de disparo 02-60 o lineal
Características de salida
Clasificación nominal de
contacto de salida
Relevador de control SPST - Forma A
Relevador auxiliar SPDT - Forma C
Clasificación de
Capacidad experimental B300
Propósito general 5 A a 240 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -55 °C a 80 °C (-67 °F a 176 °F)
Precisión
Voltaje ± 1 %
Corriente ± 2 % (2 a 100 amperios, directa)
Temporización 2 % ± 0,5 s
Corriente GF ± 5 %
Repetibilidad
Voltaje ± 0,5 %
Corriente ± 1 % (2 a 100 amperios, directa)
Potencia de entrada máxima 5 W
Grado de contaminación 3 (estándar de terminado general)
Tipo de protección IP20
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque del terminal
(bloques de terminal
no conectables) 0,62 Nm (5,5 in-lb).
Torque del terminal
(Conexión a tierra) 0,90 Nm (7,9 in-lb).
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV,
aéreo 8 kV
Inmunidad a radiofrecuencias
(RFI), Conducida IEC 61000-4-6, Nivel 3 10 V/m
Inmunidad a radiofrecuencias
(RFI), Radiada IEC 61000-4-3, Nivel 3 10 V/m
Rápidos Transitorios Eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 3,5 kV
Sobretensión IEC 61000-4-5, Nivel 3, línea a línea 2 kV;
Nivel 4, línea a tierra 4 kV
Clasificación nominal FCC Parte 15.107 para emisiones,
Parte 15.247 para radiadores intencionales
Resistencia a cortocircuitos
Clasificación nominal 100 kA simétrica a 690 V CA
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Marcas de seguridad
cULus UL60947, UL1053, C22.2 (Archivo #E68520)
CE IEC 60947 Edición 5.2, IEC 60947-8
Tamaño máximo del conductor
(con aislamiento) 16 mm (0,63")
Dimensiones H 73,91 mm (2,91"); A 103,63 mm (4,08");
P 121,67 mm (4,79")
Peso 385,6 g (13,6 oz; 0,85 lb)
Método de montaje Montaje en superficie (4 tornillos n.º 8)
o montaje en riel DIN
Aplicación móvil Littelfuse
Averías de configuración en tiempo real
MP8000
Ícono de aplicación
Littelfuse
Relevadores de protección
114 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas Protección de bombas y motores – Protección de motor trifásico
SERIE 777
Descripción
El 777 es un relevador de sobrecarga electrónico programable diseñado
para proteger cualquier disposición de motor de carga completa por
2-800 amperios (se requiere de CT externos de 90 amperios, mínimo).
El 777 (serie de productos) es ideal para aplicaciones trifásicas de
200-480 V CA, con varias unidades especializadas para otros rangos de
voltaje y aplicaciones únicas. Algunas aplicaciones comunes incluyen
sistemas de bandas transportadoras, equipos de HVAC, sierras
eléctricas y desvastadoras, motores de ventilación y casi cualquier
aplicación de bombeo. Algunas de las aplicaciones únicas incluyen
el uso de motores sumergibles Franklin equipados con Subtrol® para
detectar temperaturas de motor altas y aplicaciones donde se requiere
de un disparo lineal rápido.
Todos los relevadores de sobrecarga brindan protección insuperable al
combinar sobrecarga, voltaje, pérdida de fase e inversión, desbalance
de voltaje y corriente, monitoreo de la potencia, y carga insuficiente en
un solo paquete. Para aplicaciones individuales, las unidades incorporan
una pantalla LED de 3 dígitos que se utiliza para programar, brindar
información operativa en tiempo real y mostrar códigos de diagnóstico
para ayudar a solucionar problemas ante una condición de falla. Las
unidades también integran un puerto de comunicaciones que se utiliza
para comunicación con los módulos enunciados en la sección de
accesorios para 777 para conformar una red Modbus, DeviceNet™,
Profibus, o Ethernet. Pueden monitorearse y controlarse remotamente
hasta 99 unidades desde una computadora, o un sistema SCADA, y
registrar datos por medio de una computadora con el software Solutions
opcional. Esta función permite satisfacer los requisitos para seguridad
de arco eléctrico de forma simple y económica.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Pantalla integrada Indicación visual para programación, visualización de voltaje
o corriente en tiempo real, y códigos para fallas recientes
Configuraciones de
corriente y voltaje
programables
Permite utilizar el equipo en un amplio rango de sistemas
3 opciones de
restablecimiento
seleccionables
Elija entre automático, semiautomático, o manual para
adaptarse mejor a las necesidades de cada aplicación
3 temporizadores de
retardo de restablecimiento
programables
Programe los tiempos de retardo de restablecimiento por
separado protección de ciclo rápido, enfriamiento del motor, y
restablecimiento por abatimiento (pozo seco)
Compatibilidad con
pantallas remotas
Aumenta la seguridad mediante pantallas remotas con datos
en tiempo real e historial de fallas, sin la necesidad de abrir
el tablero eléctrico. Ayuda a cumplir con las normas de
seguridad para arco eléctrico
Restablecimiento flexible
El restablecimiento puede realizarse mediante el pulsador
en el relevador o remotamente con el kit de
RESTABLECIMIENTO remoto 777-MRSW u OL opcional.
Capacidad de
comunicaciones por red
Compatible con Modbus, DeviceNet™, Profibus, o Ethernet
mediante el módulo de comunicaciones opcional
Monitor de voltaje y corriente trifásico
Diagrama de conexiones
TYPICAL WIRING DIAGRAM FOR MODEL 777
(20 TO 90 amps)
CONTROL DE
ALIMENTACIÓN
BOBINA
INICIAR
DETENER
AUTOMÁTICO
EN MOTOR
LITTELFUSE RECOMMENDS
USING CTs WITH TERMINALS TO
SIMPLIFY INSTALLATION.
12 - 16 AWG
STRANDED
WIRE
Información para pedir
Ver página siguiente.
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELO 777 (2 a 90 amperios)
DIAGRAMA DE CONEXIONES PARA TRANSFORMADOR DE CORRIENTE MODELO 777
(80 a 800 amperios)
www.littelfuse.com/777
LITTELFUSE RECOMIENDA
UTILIZAR CT CON TERMINALES
PARA SIMPLIFICAR LA
INSTALACIÓN.
Nota: Todos los CT deben instalarse en la misma dirección y todos los
CT secundarios deben estar cableados de igual forma, por ejemplo,
todos los terminales X1 se conectan en la ventana principal (circular)
y luego en el terminal H1 saliendo de la ventana del conductor de
conexión en bucle existente (rectangular).
Cada CT secundario debe tener cinco ciclos a través de la ventana del
conductor principal correspondiente en el modelo 777.
Cada CT secundario debe tener cinco ciclos a través de la ventana
del conductor principal correspondiente en las versiones LR de la
Serie 777 Plus.
CONTACTOR
12-16 AWG
CABLE
TRENZADO
3Ø
MOTOR
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 1.
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 115
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/777
Información para pedir
MODELO VOLTAJE DE
LÍNEA
RANGO DE AMPERAJE
TOTAL DEL MOTOR DESCRIPCIÓN
777-P2 200-480 V CA 2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de
salida de 480 VA a 240 V CA
777-LR-P2 200-480 V CA 1-800 A (se requiere de CT
externos de 9 A, mínimo) Protege los motores de rango bajo al estar conectados directamente o con FLA 10-800 con el uso de CT externos
777-HVR-P2 340-480 V CA 2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de
salida de 470 VA a 600 V CA Requerido cuando no se utiliza un transformador de control de corriente (CPT) con un
sistema de 480 V
777-HVR-LR-P2 340-480 V CA 1-800 A (se requiere de CT
externos de 9 A, mínimo)
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de
salida de 470 VA a 600 V CA Requerido cuando no se utiliza un transformador de control de corriente (CPT) con un
sistema de 480 V
777-575-P2 500-600 V CA 2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de salida
de 480 VA a 240 V CA Utilizado en Canadá y en NE, EE. UU. donde son comunes servicios de electricidad de 575 V
777-575-LR-P2 500-600 V CA 1-800 A (se requiere de CT
externos de 9 A, mínimo)
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de salida
de 480 VA a 240 V CA Utilizado en Canadá y en NE, EE. UU. donde son comunes servicios de electricidad de 575 V
777-MV-P2 100-240 V CA 10-800 A con CT externos
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de
salida de 480 VA a 240 V CA Diseñado para aplicaciones de voltaje medio donde se utilizan unidades tanto PT
como CT. Tiene multiplicadores integrados para CT de 25,5, 50,5, 100,5. El desbalance de voltaje, la protección de
fase inversa y monofásica pueden desactivarse para aplicaciones donde solo se utilizan PT
777-HRG-P2 200-480 V CA 2-90 A solamente
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de
salida de 480 VA a 240 V CA Diseñado para sistemas de resistencia alta que incorporan un CT de secuencia cero
externo que se conecta con los multiplicadores integrados para detectar fallas de conexión a tierra
777-LR-HRG-P2 200-480 V CA 10-800 A (se requiere de
CT externos)
Relevadores de sobrecarga diseñados para sistemas de resistencia alta que incorporan un CT de secuencia cero
externo que se conecta con los multiplicadores integrados para detectar fallas de conexión a tierra
777-575-HRG-P2 500-600 V CA 2-90 A solamente
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de
salida de 480 VA a 240 V CA Utilizado en Canadá y en NE, EE. UU. donde son comunes servicios de electricidad de
575 V. Diseñado para sistemas de resistencia alta que incorporan un CT de secuencia cero externo que se conecta
con los multiplicadores integrados para detectar fallas de conexión a tierra
777-575-LR-HRG-P2 500-600 V CA 10-800 A con CT externos
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de
salida de 480 VA a 240 V CA Utilizado en Canadá y en NE, EE. UU. donde son comunes servicios de electricidad de
575 V. Diseñado para sistemas de resistencia alta que incorporan un CT de secuencia cero externo que se conecta
con los multiplicadores integrados para detectar fallas de conexión a tierra
777-FT 200-480 V CA 2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona disparo de sobrecorriente lineal y contactos de relevador SPDT de salida de 480 VA a 240 V CA.
Conocidos también como relevador de seguridad, están diseñados para aplicaciones de disparo lineal rápido. El
retardo de disparo por sobrecorriente puede definirse en un rango de 500 ms y 70 s. El retardo de disparo bajo es
ideal en aplicaciones de transmisión por cadena y enlace por transmisión para prevenir sobrecargas o trabas. Otras
aplicaciones incluyen clarificadores de aguas residuales, mezcladoras, barrenadoras y bandas transportadoras. El
retardo de disparo extendido es ideal para paneles de prueba de motores en talleres de bobinados. Además incluye
tiempo de retardo de disparo por sobrecorriente y tiempo de aceleración del motor ajustables al utilizar el modo de
disparo lineal rápido
777-TS 200-480 V CA 2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona contactos de relevador SPDT de salida de 480 VA a 240 V CA. Para utilizar con motores sumergibles
Franklin equipados con Subtrol® para detectar altas temperaturas en el motor
777-LR-TS 200-480 V CA 1-9 A solamente Proporciona contactos de relevador SPDT de salida de 480 VA a 240 V CA. Para utilizar con motores sumergibles
Franklin equipados con Subtrol® para detectar altas temperaturas en el motor
777-575-TS 500-600 V CA 2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona contactos de relevador SPDT de salida de 480 VA a 240 V CA. Para utilizar con motores sumergibles
con rango nominal de 500-600 V CA Franklin equipados con Subtrol® para detectar altas temperaturas en el motor
777VA-02 200-480 V CA 2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de
salida de 480 VA a 240 V CA Tiene un punto de ajuste de retardo de restablecimiento de 2 a 500 minutos y puntos
de retardo de disparo por corriente baja de 2 a 60 minutos.
777VA-03 200-480 V CA 2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona disparo de potencia baja y alta*, disparo por sobrecorriente lineal, y contactos de relevador SPDT de
salida de 480 VA a 240 V CA Para utilizar con convertidores trifásicos y monofásicos rotativos y estáticos. Función
de activación por voltaje bajo y alto aplicable a la potencia de energía eléctrica suministrada. Funciona bien con
convertidores de fase no cargados ya que el relevador ignora los voltajes intensamente desbalanceados
* Para redes programables solamente
SERIE 777
Protección de bombas y motores– Protección de motor trifásico
Relevadores de protección
116 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
SERIE 777
Accesorios
Módulo de comunicaciones RS485MS-2W
Se requiere para activar la función de comunicaciones
Modbus en los productos modelo 77X.
Módulo de comunicaciones CIO-MB/CIO-120-MB
Interfaz Modbus-RTU con capacidad para proporcionar
control y monitoreo discreto de un relevador de
sobrecarga en una red Modbus.
Módulo de comunicaciones CIO-DN-P/CIO-120-DN-P
Interfaces DeviceNet™ con capacidad de proporcionar
control y monitoreo discreto de iniciadores de
motor, controladores y otros dispositivos en una red
DeviceNet™.
Módulo de comunicaciones CIO-777-PR
Interfaz Profibus con capacidad de proporcionar
control y monitoreo discreto de iniciadores de motor,
controladores y otros dispositivos en una red Profibus.
Módulo de comunicación CIO-EN (sin POE)
Interfaz Modbus-RTU y Modbus-TCP con capacidad para
proporcionar control y monitoreo discreto de un relevador
de sobrecarga en una red Modbus.
Adaptadores de comunicación
• Convertidor RS485-RS232 con cable y conector
• Convertidor RS485-USB con cable y conector
• Convertidor RS232-USB
Las especificaciones cumplen los estándares de
la industria
Monitor remoto RM1000
El sistema de administración de motor RM1000/777
combina la insuperable protección de motores
electrónicos y el monitoreo de motores crítico y fácil de
utilizar hasta para 16 dispositivos.
Monitor remoto RM2000
El sistema de administración de motor RM2000/777
combina la insuperable protección de motores
electrónicos y el monitoreo de motores crítico y fácil de
utilizar con registro de eventos y reloj en tiempo real para
certificación de hora y fecha.
Software Solutions: Solutions-M
Las características del software incluyen registro de
datos, monitoreo de datos en tiempo real, y monitoreo
de fallas y eventos.
Kit de restablecimiento remoto manual 777-MRSW
Permite que la línea 777 de productos MotorSaver®
y PumpSaver® sea restablecida manualmente sin
necesidad de abrir el panel.
Restablecimiento OL Kit de restablecimiento
remoto manual
Permite que la línea 777 de productos MotorSaver®
y PumpSaver® sea restablecida manualmente sin
necesidad de abrir el panel.
Especificaciones
Características funcionales
Frecuencia 50/60 Hz
Clase de disparo por
sobrecorriente TC
(unidades Serie 777 Plus) 02-60, J02-J60, L00-L60 o apagado
Clase de disparo
por sobrecorriente TC
(unidades serie 77C, 777 no Plus) 5, 10, 15, 20, 30
(el prefijo “J” activa la función de protección contra
trabas)
Características de salida
Clasificación nominal de contacto
de salida (SPDT - Forma C)
Clasificación nominal de
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 10 A a 240 V CA
Clasificación nominal de
Capacidad experimental
Modelos HVR 470 VA a 600 V CA, B600
Características generales
Rango de temperatura ambiente
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Precisión
Voltaje ± 1 %
Corriente ± 3 % (<100 amperios, directa)
Corriente GF ± 15 %
Temporización
(unidades Serie 777 Plus) ± 0,5 s
Temporización
(unidades Serie 77C, 777 no Plus) 5 % +1 segundo
Repetibilidad
Voltaje ± 0,5 % de voltaje nominal
Corriente ± 1 % (<100 amperios, directa)
Potencia de entrada máxima 10 W
Grado de contaminación 3
Tipo de protección IP20
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque del terminal 0,8 Nm (7 in-lb).
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencias
(RFI), Conducida IEC 61000-4-6, Nivel 3 10 V/m
Inmunidad a radiofrecuencias
(RFI), Radiada IEC 61000-4-3, Nivel 3 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 3,5 kV
Cortocircuito 100 kA
Sobretensión
IEC 61000-4-5, Nivel 3, línea a línea 2 kV;
Nivel 4, línea a tierra 4 kV
Conformidad con onda oscilatoria
y sobretensión ANSI/IEEE C62.41 al nivel de línea a línea de 6 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Vibración IEC 68-2-6, 10-55 Hz, 1 mm pico a pico, 2 horas,
3 ejes
Choque eléctrico IEC 68-2-27, 30 g, 3 ejes, 11 ms de duración, pulsos
de onda intermedia
Protección de bombas y motores – Protección de motor trifásico
www.littelfuse.com/777
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 117
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/777
SERIE 777
Protección de bombas y motores – Protección de motor trifásico
Marcas de seguridad
UL UL508, UL1053 (Archivo #E68520)
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2 Nro. 14
Tamaño máximo del conductor
(con aislamiento) para 777/77C 16,5 mm (0,65")
Dimensiones H 77,47 mm (3,05"); A 97,79 mm (3,85");
P 128,27 mm (5,05")
Peso 707,6 g (24,96 oz; 1,56 lb)
Método de montaje Montaje en superficie (4 tornillos n.º 8) o montaje en
riel DIN
Relevadores de protección
118 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/777-77c
SERIE 777/77C
Descripción
La serie 777/77C es relevador de sobrecarga electrónico programable
diseñado para proteger cualquier disposición de motor de carga
completa por 2-800 amperios (se requiere de CT externos de
90 amperios, mínimo). Algunas aplicaciones comunes incluyen sistemas
de bandas transportadoras, equipos de HVAC, sierras eléctricas y
amoladoras, motores de ventilación y casi cualquier aplicación de
bombeo.
Todos los relevadores de sobrecarga brindan protección insuperable al
combinar sobrecarga, carga insuficiente y voltaje en un solo paquete.
Para aplicaciones individuales, las unidades incorporan una pantalla
LED de 3 dígitos que se utiliza para programar, brindar información
operativa en tiempo real y mostrar códigos de diagnóstico para ayudar a
solucionar problemas ante una condición de falla. Las unidades también
integran un puerto de comunicaciones que se utiliza para comunicación
con los módulos enunciados en la sección de accesorios para 777 para
conformar una red Modbus, DeviceNet™, Profibus o Ethernet. Pueden
monitorearse y controlarse remotamente hasta 99 unidades desde una
computadora, o un sistema SCADA, y registrar datos por medio de una
computadora con el software Solutions opcional. Esta función permite
satisfacer los requisitos para seguridad de arco eléctrico de forma
simple y económica.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Pantalla integrada Indicación visual para programación, visualización de voltaje o
corriente en tiempo real, y códigos para fallas recientes
Configuraciones de corriente
y voltaje programables Permite utilizar el equipo en un amplio rango de sistemas
3 opciones de
restablecimiento
seleccionables
Elija entre automático, semiautomático, o manual para
adaptarse mejor a las necesidades de cada aplicación
3 temporizadores de
retardo de restablecimiento
programables
Programe los tiempos de retardo de restablecimiento por
separado protección de ciclo rápido, enfriamiento del motor, y
restablecimiento por abatimiento (pozo seco)
Compatibilidad con
pantallas remotas
Aumenta la seguridad mediante pantallas remotas con datos
en tiempo real e historial de fallas, sin la necesidad de abrir el
tablero eléctrico. Ayuda a cumplir con las normas de seguridad
para arco eléctrico
Restablecimiento flexible
El restablecimiento puede realizarse mediante el pulsador en el
relevador o remotamente con el kit de restablecimiento remoto
777-MRSW u OL-RESET opcional.
Capacidad de
comunicaciones por red
Compatible con Modbus, DeviceNet™, Profibus, o Ethernet
mediante el módulo de comunicaciones opcional
Información para pedir
MODELO VOLTAJE DE
LÍNEA
RANGO DE
AMPERAJE
TOTAL DEL MOTOR
DESCRIPCIÓN
77C 100-240 V CA
2-800 A (se
requiere de CT
externos de 90 A,
mínimo)
Proporciona contactos de
relevador SPDT de salida de
480 VA a 240 V CA
77C-LR 100-240 V CA 1-9 A solamente
Proporciona contactos de
relevador SPDT de salida de
480 VA a 240 V CA
777-
HVR-SP 340-480 V CA
2-800 A (se
requiere de CT
externos de 90 A,
mínimo)
Proporciona contactos de rel
relevador é SPDT de salida
de 470 VA a 600 V CA. Para
sistemas sin transformador de
control de energía
Monitor de voltaje y corriente monofásico
Diagrama de conexiones
A B C
LITTELFUSE RECOMMENDS USING CTs THAT HAVE TERMINALS
TO AID CONVENIENCE WHEN INSTALLING CTs.
NOTE: PHASES A & C ARE INACTIVE. USE PHASE B FOR ALL ACTIVE
CURRENT MEASUREMENTS. CT SECONDARY MUST MAKE FIVE
PASSES THROUGH THE PHASE B CONDUCTOR WINDOW.
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELOS 77C CON CONTROL DE MOTOR
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELOS 77C CON CT EXTERNO
Protección de bombas y motores– Protección de motores monofásicos
CONTROL
DE ENERGÍA
240 V CA
O MENOS
NOTA: LAS FASES A Y C
ESTÁN INACTIVAS
EN MOTOR
INICIAR
MANUAL
AUTOMÁTICO
LITTELFUSE RECOMIENDA UTILIZAR CT QUE TENGAN TERMINALES
PARA AYUDAR CON LA FÁCIL INSTALACIÓN DE LOS CT.
NOTA: LAS FASES A y C ESTÁN INACTIVAS. UTILICE LA FASE B PARA
TODAS LAS MEDIDAS DE CORRIENTE ACTIVA. EL CT SECUNDARIO
DEBE REALIZAR CINCO CICLOS A TRAVÉS DE LA VENTANA DEL
CONDUCTOR DE FASE B.
10 – 12 AWG
CABLE TRENZADO
CLASIFICACIÓN NOMINAL DE
Capacidad experimental 120-240 V CA 1Ø 480 VA A 240 V CA
50/60 HZ
1Ø
MOTOR
DETENER
APAGAR
PILOTO
BOBINA
CONTACTOR
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 1.
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 119
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
SERIE 777/77C
Accesorios
Módulo de comunicaciones RS485MS-2W
Se requiere para activar la función de comunicaciones
Modbus en los productos modelo 77X.
Adaptadores de comunicación
• Convertidor RS485-RS232 con cable y conector
• Convertidor RS485-USB con cable y conector
• Convertidor RS232-USB
Las especificaciones cumplen los estándares de la
industria
Monitor remoto RM1000
El sistema de administración de motor RM1000/777
combina la insuperable protección de motores
electrónicos y el monitoreo de motores crítico y fácil de
utilizar hasta para 16 dispositivos.
Monitor remoto RM2000
El sistema de administración de motor RM2000/777
combina la insuperable protección de motores
electrónicos y el monitoreo de motores crítico y fácil de
utilizar con registro de eventos y reloj en tiempo real para
certificación de hora y fecha.
Software Solutions: Solutions-M
Las características del software incluyen registro de
datos, monitoreo de datos en tiempo real, y monitoreo
de fallas y eventos.
Kit de restablecimiento remoto manual 777-MRSW
Permite que la línea de productos 777 de MotorSaver® y
PumpSaver® se restablezcan manualmente sin necesidad
de abrir el panel.
Restablecimiento OL Kit de restablecimiento
remoto manual
Permite que la línea de productos 777 de MotorSaver® y
PumpSaver® se restablezcan manualmente sin necesidad
de abrir el panel.
Especificaciones
Frecuencia 50/60 Hz
Características funcionales
Clase de activación por
sobrecorriente TC
(unidades serie 77C,
777 no Plus) 5, 10, 15, 20, 30 (el prefijo “J” activa la función de
protección contra trabas)
Características de salida
Clasificación nominal de
contacto de salida
(SPDT - Forma C)
Clasificación nominal de
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 10 A a 240 V CA
Clasificación nominal de
Capacidad experimental
Modelos HVR 470 VA a 600 V CA, B600
Características generales
Rango de temperatura ambiente
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Precisión
Voltaje ± 1 %
Corriente ± 3 % (<100 amperios, directa)
Corriente GF ± 15 %
Temporización (unidades
Serie 77C, 777 no Plus) 5 % +1 segundo
Repetibilidad
Voltaje ± 0,5 % de voltaje nominal
Corriente ± 1 % (<100 amperios, directa)
Potencia de entrada máxima 10 W
Grado de contaminación 3
Tipo de protección IP20
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque del terminal 0,8 Nm (7 in-lb).
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV,
aéreo 8 kV
Inmunidad a radiofrecuencias
(RFI), Conducida IEC 61000-4-6, Nivel 3 10 V/m
Inmunidad a radiofrecuencias
(RFI), Radiada IEC 61000-4-3, Nivel 3 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 3,5 kV
Cortocircuito 100 kA
Sobretensión
IEC 61000-4-5, Nivel 3, línea a línea 2 kV; Nivel 4, línea
a tierra 4 kV
Conformidad con onda oscilatoria
y sobretensión ANSI/IEEE C62.41 al nivel de línea a línea de 6 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Vibración 68-2-6, 10-55 Hz, 1 mm pico a pico,
2 horas, 3 ejes
Choque eléctrico IEC 68-2-27, 30 g, 3 ejes, 11 ms de duración, pulsos
de onda intermedia
Marcas de seguridad
UL UL508, UL1053 (Archivo #E68520)
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2
Tamaño máximo del conductor
(con aislamiento) para 777/77C 16,5 mm (0,65")
Dimensiones H 77,47 mm (3,05"); A 97,79 mm (3,85");
P 128,27 mm (5,05")
Peso 707,6 g (24,96 oz; 1,56 lb)
Método de montaje Montaje en superficie (4 tornillos n.º 8) o montaje en
riel DIN
Protección de bombas y motores– Protección de motores monofásicos
www.littelfuse.com/777-77c
Relevadores de protección
120 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/777kwhpp2
SERIE 777-KW/HP-P2
Descripción
La serie 777-KW/HP-P2 permite monitorear cargas, voltaje, pérdida
de fase y fase inversa, desbalance de corriente y voltaje, potencia y
corriente*, y activación por carga insuficiente según la potencia, todo
en un solo paquete. La función de activación por potencia insuficiente
es conveniente siempre y cuando la característica de corriente vs. carga
no sea lineal o tenga muy pocas variaciones. En términos generales, los
motores pequeños y motores de baja velocidad tienen poca variación
de corriente en un rango de carga normal. Los motores grandes que
soportan cargas livianas también muestran cambios de corriente
pequeños en un rango de carga operativa. Para aplicaciones individuales,
las unidades incorporan una pantalla LED de 3 dígitos que se utiliza
para programar, brindar información operativa en tiempo real y mostrar
códigos de diagnóstico para ayudar a solucionar problemas ante una
condición de falla.
Sin carga
Alimentación eléctrica
Corriente
Carga completa Sin carga Carga completa
La potencia es lineal, de
sensibilidad equivalente
tanto en cargas altas
como bajas.
La corriente no es lineal,
sensibilidad baja para
cargas bajas y
sensibilidad alta para
cargas altas.
Las unidades también integran un puerto de comunicaciones que se
utiliza para comunicación con los módulos enunciados en la sección
de accesorios para 777 para conformar una red Modbus, DeviceNet™,
Profibus o Ethernet. Pueden monitorearse y controlarse remotamente
hasta 99 unidades desde una computadora, o un sistema SCADA,
y registrar datos por medio de una computadora con el software
Solutions opcional.
* La activación por corriente baja y la activación por potencia alta son programables por red únicamente
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Protección contra
potencia alta y baja
Aumenta la fiabilidad para motores no lineales donde las
características de carga tienen pocas variaciones
Pantalla integrada
Indicación visual para programación, visualización de voltaje
en tiempo real, corriente, kilovatios, caballos de potencia, y
códigos para fallas recientes
Configuraciones de
corriente y voltaje
programables
Permite utilizar el equipo en un amplio rango de sistemas
3 opciones de
restablecimiento
seleccionables
Elija entre automático, semiautomático, o manual para
adaptarse mejor a las necesidades de cada aplicación
3 temporizadores de
retardo de restablecimiento
programables
Programe los tiempos de retardo de restablecimiento por
separado protección de ciclo rápido, enfriamiento del motor, y
restablecimiento por abatimiento (pozo seco)
Compatibilidad con
pantallas remotas
Aumenta la seguridad mediante pantallas remotas con datos
en tiempo real e historial de fallas, sin la necesidad de abrir
el tablero eléctrico. Ayuda a cumplir con las normas de
seguridad para arco eléctrico
Restablecimiento flexible
El restablecimiento puede realizarse mediante el pulsador en
el relevador o remotamente con el kit de restablecimiento
remoto 777-MRSW u OL-RESET opcional.
Capacidad de
comunicaciones por red
Compatible con Modbus, DeviceNet™, Profibus, o Ethernet
mediante el módulo de comunicaciones opcional
Monitor de voltaje y corriente trifásico
Diagrama de conexiones
Figure 1: Typical Wiring Diagram
EN MOTOR
CONTACTOR
BOBINA
CONTROL DE
ALIMENTACIÓN
INICIAR
AUTOMÁTICO
DETENER
2 3
A C B
M
LITTELFUSE RECOMMENDS
USING CTs WITH TERMINALS
TO SIMPLIFY INSTALLATION.
12 - 16 AWG
STRANDED
WIRE
All CTs must face the same direction, and all CT
secondaries must be wired identically, i.e. all X1
terminals enter the main (round) window and return
to H1 terminal after exiting the loop conductor
window (rectangle). Every CT secondary must
make 5 passes through the corresponding main
conductor window.
DIAGRAMA DE CONEXIONES TÍPICO PARA SERIES 777-KW/HP-P2
DIAGRAMA DE CONEXIONES DE TRANSFORMADOR
DE CORRIENTE PARA SERIE 777-KW/HP-P2
Protección de bombas y motores – Protección de motor trifásico
LITTELFUSE RECOMIENDA
UTILIZAR CT CON TERMINALES
PARA SIMPLIFICAR LA
INSTALACIÓN.
Todos los CT deben instalarse en la misma dirección
y todos los CT secundarios deben estar cableados de
igual forma, por ejemplo, todas los terminales X1 se
conectan en la ventana principal (circular) y luego en
el terminal H1 saliendo de la ventana del conductor
de conexión en bucle existente (rectangular). Cada CT
secundario debe tener 5 ciclos a través de la ventana
del conductor principal correspondiente.
CONTACTOR
12-16 AWG
CABLE
TRENZADO
3Ø
MOTOR
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 1.
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 121
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
SERIE 777-KW/HP-P2
Módulo de comunicación RS485MS-2W
Se requiere para activar la función de comunicaciones
Modbus en los productos modelo 77X.
Módulo de comunicaciones CIO-MB/CIO-120-MB
Interfaz Modbus-RTU con capacidad para proporcionar
control y monitoreo discreto de un relevador de sobrecarga
en una red Modbus.
Módulo de comunicaciones
CIO-DN-P/CIO-120-DN-P
Interfaces DeviceNet™ con capacidad de proporcionar
control y monitoreo discreto de iniciadores de motor,
controladores y otros dispositivos en una red DeviceNet™.
Módulo de comunicaciones CIO-777-PR
Interfaz Profibus con capacidad de proporcionar control y
monitoreo discreto de iniciadores de motor, controladores y
otros dispositivos en una red Profibus.
Módulo de comunicación CIO-EN (sin POE)
Interfaz Modbus-RTU y Modbus-TCP con capacidad para
proporcionar control y monitoreo discreto de un relevador
de sobrecarga en una red Modbus.
Adaptadores de comunicación
• Convertidor RS485-RS232 con cable y conector
• Convertidor RS485-USB con cable y conector
• Convertidor RS232-USB
Las especificaciones cumplen los estándares de la industria
Monitor remoto RM1000
El sistema de administración de motor RM1000/777
combina la insuperable protección de motores electrónicos
y el monitoreo de motores crítico y fácil de utilizar hasta
para 16 dispositivos.
Monitor remoto RM2000
El sistema de administración de motor RM2000/777
combina la insuperable protección de motores electrónicos
y el monitoreo de motores crítico y fácil de utilizar con
registro de eventos y reloj en tiempo real para certificación
de hora y fecha.
Software Solutions: Solutions-M
Las características del software incluyen registro de datos,
monitoreo de datos en tiempo real, y monitoreo de fallas y
eventos.
Kit de restablecimiento remoto manual 777-MRSW
Permite que la línea de productos 777 de MotorSaver® y
PumpSaver® se restablezcan manualmente sin necesidad
de abrir el panel.
Restablecimiento OL Kit de restablecimiento
remoto manual
Permite que la línea de productos 777 de MotorSaver® y
PumpSaver® se restablezcan manualmente sin necesidad
de abrir el panel.
Información para pedir
MODELO VOLTAJE DE
LÍNEA
RANGO DE AMPERAJE TOTAL
DEL MOTOR DESCRIPCIÓN
777-KW/HP-P2 200-480 V CA
(trifásico)
2-800 A (se requiere de CT
externos de 90 A, mínimo) Proporciona contactos de relevador SPDT de salida de 480 VA a 240 V CA
777-LR-KW/HP-P2 200-480 V CA
(trifásico)
1-800 A (se requiere de CT
externos de 9 A, mínimo) Proporciona contactos de relevador SPDT de salida de 480 VA a 240 V CA
777-HVR-KW/HP-P2 340-480 V CA
(trifásico)
2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona contactos de relevador SPDT de salida de 470 VA a 600 V CA. Se requiere cuando no se
utiliza un CPT (transformadores de control de potencia) en un sistema de 480 V. Se utiliza comúnmente
en aplicaciones de bombeo para ahorrar costos y conexiones extra asociadas con un CPT
777-575-KW/HP-P2 500-600 V CA
(trifásico)
2-800 A (se requiere de CT
externos de 90 A, mínimo)
Proporciona contactos de relevador SPDT de salida de 480 VA a 240 V CA. Utilizado en Canadá y en
NE, EE. UU. donde son comunes servicios de electricidad de 575 V
777-MLR-KW/HP-P2 200-480 V CA
(trifásico)
0,5-21 A y 40-740 A
con CT externos
Proporciona contactos de relevador SPDT de salida de 480 VA a 240 V CA. Se conecta directamente
sin la necesidad de conductores en circuito cerrado para 5-21 amperios (por debajo de 5 amperios
requiere de conductores en circuito cerrado), y puede utilizarse en CT externos para 40-740 amperios
Accesorios
Protección de bombas y motores – Protección de motor trifásico
www.littelfuse.com/777kwhpp2
Relevadores de protección
122 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/777kwhpp2
Especificaciones
Frecuencia 50/60 Hz
Características funcionales
Clase de activación por
sobrecorriente TC 02-60, J02-J60, L00-L60 o apagado
Características de salida
Clasificación nominal de
contacto de salida
(SPDT - Forma C)
Clasificación nominal de
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 10 A a 240 V CA
Clasificación nominal de
Capacidad experimental
para modelos HVR 470 VA a 600 V CA, B600
Características generales
Rango de temperatura ambiente
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Precisión
Voltaje ± 1 %
Corriente ± 3 % (<100 amperios, directa)
Potencia ± 4 % (<100 amperios, directa)
Corriente GF ± 15 %
Temporización ± 0,5 s
Repetibilidad
Voltaje ± 0,5 % de voltaje nominal
Corriente ± 1 % (<100 amperios, directa)
Potencia ± 2 %
Potencia de entrada máxima 10 W
Grado de contaminación 3
Tipo de protección IP20
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque del terminal 0,8 Nm (7 in-lb).
Estándares superados
Descarga electrostática
(ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencias
(RFI), Conducida IEC 61000-4-6, Nivel 3 10 V/m
Inmunidad a radiofrecuencias
(RFI), Radiada IEC 61000-4-3, Nivel 3 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 3,5 kV
Clasificación nominal
de cortocircuitos 100 kA
SERIE 777-KW/HP-P2
Sobretensión
IEC 61000-4-5, Nivel 3, línea a línea 2 kV; Nivel 4, línea
a tierra 4 kV
Conformidad con onda
oscilatoria y sobretensión
ANSI/IEEE C62.41 al nivel de línea a línea de 6 kV
Prueba de alto potencial Conforme con UL508
(2 x V nominal +1000 V por 1 minuto)
Vibración IEC 68-2-6, 10-55 Hz, 1 mm pico a pico, 2 horas,
3 ejes
Choque eléctrico IEC 68-2-27, 30 g, 3 ejes, 11 ms de duración, pulsos
de onda intermedia
Marcas de seguridad
UL UL508, UL1053 (Archivo #E68520)
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2 Nro. 14
Tamaño máximo del conductor
(con aislamiento)
para 777 16,5 mm (0,65")
Dimensiones H 77,47 mm (3,05"); A 97,79 mm (3,85");
P 128,27 mm (5,05")
Peso 707,6 g (24,96 oz; 1,56 lb)
Método de montaje Montaje en superficie (4 tornillos n.º 8) o montaje en
riel DIN
Protección de bombas y motores – Protección de motor trifásico
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 123
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/777accupower
777-ACCUPOWER
Descripción
El 777-AccuPower es un relevador de protección para motor y bombas
trifásico completamente programable. Permite ajustar los HP del motor,
el amperaje de cargas completas, y mejora la eficiencia y el factor de
alimentación para asignar y además brindará cálculos precisos sobre la
potencia de salida del motor. Esta función es muy útil en aplicaciones de
procesamiento o bombas de transmisión magnética donde la potencia
de ejecución supera la potencia de alimentación. La pantalla indica
cálculos de voltaje, corriente y potencia, además de información sobre
fallas y puntos de ajuste. La pantalla integrada simplifica la solución de
problemas y permite al usuario configurar puntos de ajuste de forma
fácil y precisa. El 777-AccuPower puede utilizarse con el módulo de
salida opcional COM 4-20 para generar una señal analógica proporcional
a la potencia del eje de salida, el RS485MS-2W (para funciones Modbus
limitadas, y para utilizar con las series RM1000/RM2000) se describe en
la sección Accesorios de la serie 777.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Mediciones de la potencia
de salida del motor
Permite utilizar la potencia de ejecución sobre la potencia
de alimentación
3 temporizadores
de retardo de
restablecimiento
programables
Programe los tiempos de retardo de restablecimiento por
separado protección de ciclo rápido, enfriamiento del motor,
y restablecimiento por abatimiento (pozo seco)
Pantalla integrada Indicación visual para programación, visualización de voltaje
o corriente en tiempo real, y códigos para fallas recientes
Compatibilidad con
pantallas remotas
Aumenta la seguridad mediante pantallas remotas de
medidores de horas de funcionamiento, códigos de las
últimas cuatro fallas, sin la necesidad de abrir el tablero
eléctrico. Ayuda a cumplir con las normas de seguridad para
arco eléctrico
Capacidad de
comunicaciones por red
Funciones Modbus limitadas utilizando el módulo de
comunicación RS485MS-2W
Accesorios
Módulo de comunicaciones RS485MS-2W
Se requiere para activar la función de comunicaciones
Modbus en los productos modelo 77X.
Módulo de comunicación de salida COM 4-20
Este módulo permite la comunicación a un PLC con
una entrada analógica y entrada sin Modbus.
Monitor remoto RM1000
El sistema de administración de motor RM1000/777
combina la insuperable protección de motores
electrónicos y el monitoreo de motores crítico y fácil
de utilizar hasta para 16 dispositivos.
Monitor remoto RM2000
El sistema de administración de motor RM2000/777
combina la insuperable protección de motores
electrónicos y el monitoreo de motores crítico y fácil
de utilizar con registro de eventos y reloj en tiempo real
para certificación de hora y fecha.
Monitor de voltaje y corriente trifásico
Diagrama de conexiones
Figure 1: Typical Wiring Diagram
CONTACTOR
2 3
A C B
M
EN MOTOR
BOBINA
CONTROL DE
ALIMENTACIÓN
INICIAR
AUTOMÁTICO
DETENER
LITTELFUSE RECOMMENDS
USING CTs WITH TERMINALS
TO SIMPLIFY INSTALLATION.
12 - 16 AWG
STRANDED
WIRE
All CTs must face the same direction, and all CT
secondaries must be wired identically, i.e. all X1
terminals enter the main (round) window and return
to H1 terminal after exiting the loop conductor
window (rectangle). Every CT secondary must
make 5 passes through the corresponding main
conductor window.
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELO 777-ACCUPOWER
DIAGRAMA DE CONEXIONES PARA TRANSFORMADOR
DE CORRIENTE
O MODELO 777-ACCUPOWER
Protección de bombas y motores – Protección de motor trifásico
LITTELFUSE RECOMIENDA
UTILIZAR CT CON TERMINALES
PARA SIMPLIFICAR LA
INSTALACIÓN.
Todos los CT deben instalarse en la misma dirección
y todos los CT secundarios deben estar cableados de
igual forma, por ejemplo, todas los terminales X1 se
conectan en la ventana principal (circular) y luego en
el terminal H1 saliendo de la ventana del conductor
de conexión en bucle existente (rectangular). Cada CT
secundario debe tener 5 ciclos a través de la ventana
del conductor principal correspondiente.
CONTACTOR
12-16 AWG
CABLE
TRENZADO
3Ø
MOTOR
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 1.
Relevadores de protección
124 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/777accupower
777-ACCUPOWER
Especificaciones
Características de entrada
Voltaje de línea 200-480 V CA
Frecuencia 50/60 Hz
Rango de amperaje para carga
completa del motor 2-800 A (se requiere de CT externos de más de 90 A)
Características funcionales
Clase de activación por
sobrecorriente TC 5, 10, 15, 20, 30 (el prefijo “J” activa la función
de protección)
Características de salida
Clasificación nominal de
contacto de salida
(SPDT - Forma C)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Precisión
Caballos de fuerza/
Kilovatios calculados
Típico ± 3 %*
Voltaje ± 1 %
Corriente ± 3 % (<100 amperios, directa)
Corriente GF ± 15 %
Temporización 5 % ± 1 segundo
Repetibilidad
Voltaje ± 0,5 % de voltaje nominal
Corriente ± 1 % (<100 amperios, directa)
Potencia de entrada máxima 10 W
Grado de contaminación 3
Clase de protección IP20, NEMA 1 (seguro para manipular)
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque del terminal 0,8 Nm (7 in-lb).
Estándares superados
Descarga electrostática
(ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a las frecuencias
por radio (RFI), Conducida IEC 61000-4-6, Nivel 3 10 V/m
Inmunidad a las frecuencias
por radio (RFI), Radiada IEC 61000-4-3, Nivel 3 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 3,5 kV
Clasificación nominal
de cortocircuitos 100 kA
Sobretensión
IEC 61000-4-5, Nivel 3, línea a línea 2 kV;
Nivel 4, línea a tierra 4 kV
Conformidad con onda circular y
sobretensión ANSI/IEEE C62.41 a un nivel de 6 kV línea a línea
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Vibración IEC 68-2-6, 10-55 Hz, 1 mm pico a pico, 2 horas,
3 ejes
Choque eléctrico IEC 68-2-27, 30 g, 3 ejes, 11 ms de duración, pulsos
de onda intermedia
Marcas de seguridad
UL UL508, UL1053
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2
Máx. Tamaño del conductor
para 777 16,5 mm (0,65") con aislamiento
Dimensiones H 77,47 mm (3,05"); A 97,79 mm (3,85");
P 128,27 mm (5,05")
Peso 589,67 g (20,8 oz; 1,3 lb)
Método de montaje Montaje en superficie (4 tornillos n.º 8) o
montaje en riel DIN
*En un sistema correctamente balanceado dentro del rango de corriente recomendado.
Protección de bombas y motores – Protección de motor trifásico
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 125
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
SERIE 77C-KW/HP
Descripción
Los modelos 77C-LR-KW/HP y 77C-KW/HP son relevadores de
protección de bombas programables que monitorean el voltaje y
la corriente para identificar voltaje alto o bajo, sobrecarga y carga
insuficiente según la potencia, todo en un solo paquete. La función
de activación por potencia baja es conveniente siempre y cuando la
característica corriente vs. carga no sea lineal o tenga pocas variaciones.
En términos generales, los motores pequeños y motores de baja
velocidad tienen poca variación de corriente en un rango de carga
normal. Los motores grandes que soportan cargas livianas también
muestran cambios de corriente pequeños en un rango de carga
operativa. Algunos usos comunes incluyen aplicaciones de bombeo
donde los motores operan lentamente, alrededor de 3400 RPM, y en
general presentan pocas variaciones de corriente vs. carga; tales como
motores de mezcladoras de baja velocidad o agitadoras hasta de 50 HP,
y transmisiones magnética o bombas monobloque.
Sin carga
Alimentación eléctrica
Corriente
Carga completa Sin carga Carga completa
La potencia es lineal, de
sensibilidad equivalente
tanto en cargas altas
como bajas.
La corriente no es lineal,
sensibilidad baja para
cargas bajas y
sensibilidad alta para
cargas altas.
Este relevador PumpSaver de Littelfuse proporciona la alta sensibilidad
de un monitor de potencia para proteger motores de bombas contra
condiciones de abatimiento (pozo seco) y restricción del flujo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Protección de sobrecarga Aumenta la fiabilidad para motores no lineales donde las
características de carga tienen pocas variaciones
Pantalla integrada
Indicación visual para programación, visualización de voltaje
en tiempo real, corriente, kilovatios, caballos de fuerza, y
códigos para fallas recientes
15 criterios de
configuración
programables
Brinda flexibilidad al usuario para calibrar el relevador y
obtener protección máxima en cualquier aplicación.
Memoria de fallas
recientes Proporciona diagnóstico instantáneo para resolver problemas
Compatibilidad con
pantallas remotas
Aumenta la seguridad mediante pantallas remotas con datos
en tiempo real e historial de fallas, sin la necesidad de abrir
el tablero eléctrico. Ayuda a cumplir con las normas de
seguridad para arco eléctrico.
Restablecimiento flexible
Opciones de restablecimiento: automático o manual mediante
el pulsador en el relevador, o remotamente con el kit de
restablecimiento remoto opcional 777-MRSW u OL-RESET.
Capacidad de
comunicaciones por red
Compatible con Modbus utilizando el módulo de
comunicaciones opcional (RS485MS-2W)
Monitor de voltaje y corriente monofásico
Diagrama de conexiones
CONTROL DE
ALIMENTACIÓN
NOTA: LAS FASES A y C
ESTÁN INACTIVAS.
240 V CA
O MENOS
PILOTO AUTOMÁTICO
DETENER
APAGAR M
INICIAR
MANUAL
CONTACTOR
BOBINA
A B C
EN MOTOR
L1 L2
A B C
LITTELFUSE RECOMMENDS USING CTs THAT HAVE TERMINALS TO AID
CONVENIENCE WHEN INSTALLING CTs.
NOTE: PHASES A & C ARE INACTIVE. USE PHASE B FOR ALL ACTIVE
CURRENT MEASUREMENTS. CT SECONDARY MUST MAKE FIVE
PASSES THROUGH THE PHASE B CONDUCTOR WINDOW.
NOTE: OTHER NECESSARY CONNECTIONS ARE NOT SHOWN
A B
10 - 12 AWG
STRANDED WIRE
PILOT DUTY RATING
120-240VAC 1Ø 480VA AT 240VAC
50/60 HZ
1Ø
MOTOR
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELOS 77C-KW/HP
CON CONTROL DE MOTOR
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELOS 77C-KW/HP CON CT EXTERNO
Información para pedir
MODELO VOLTAJE DE
LÍNEA
RANGO DE AMPERAJE
TOTAL DEL MOTOR DESCRIPCIÓN
77C-KW/HP 100-240 V CA
2-90 A (se requieren
CT externos de 90 A,
mínimo)
Proporciona contactos de
relevador SPDT de salida
(Forma C) de 480 VA a
240 V CA
77C-LR-KW/HP 100-240 V CA
1-9 A (se requieren
CT externos de 9 A,
mínimo)
Proporciona contactos de
relevador SPDT de salida
(Forma C) de 480 VA a
240 V CA
Protección de bombas y motores – Protección de bombas monofásicas
www.littelfuse.com/77ckwhp
LITTELFUSE RECOMIENDA UTILIZAR CT QUE TENGAN TERMINALES
PARA AYUDAR CON LA FÁCIL INSTALACIÓN DE LOS CT.
NOTA: LAS FASES A y C ESTÁN INACTIVAS. UTILICE LA FASE B PARA
TODAS LAS MEDIDAS DE CORRIENTE ACTIVA. EL CT SECUNDARIO DEBE
REALIZAR CINCO CICLOS A TRAVÉS DE LA VENTANA DEL CONDUCTOR
DE FASE B.
NOTA: NO SE INDICAN OTRAS CONEXIONES NECESARIAS
10 – 12 AWG
CABLE TRENZADO
CLASIFICACIÓN NOMINAL DE Capacidad experimental
480 VA A 240 V CA 120-240 V CA 1Ø
50/60 HZ
1Ø
MOTOR
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 1.
Relevadores de protección
126 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/77ckwhp
SERIE 77C-KW/HP
Accesorios
Módulo de comunicaciones RS485MS-2W
Se requiere para activar la función de comunicaciones
Modbus en los productos modelo 77X.
Adaptadores de comunicación
• Convertidor RS485-RS232 con cable y conector
• Convertidor RS485-USB con cable y conector
• Convertidor RS232-USB
Las especificaciones cumplen los estándares de la industria
Monitor remoto RM1000
El sistema de administración de motor RM1000/777 combina
la insuperable protección de motores electrónicos y el
monitoreo de motores crítico y fácil de utilizar hasta para
16 dispositivos.
Monitor remoto RM2000
El sistema de administración de motor RM2000/777 combina
la insuperable protección de motores electrónicos y el
monitoreo de motores crítico y fácil de utilizar con registro
de eventos y reloj en tiempo real para certificación de hora
y fecha.
Solutions Software: Solutions-M
Las características del software incluyen registro de datos,
monitoreo de datos en tiempo real, y monitoreo de fallas y
eventos.
Kit de restablecimiento remoto manual 777-MRSW
Permite que la línea de productos 777 de MotorSaver® y
PumpSaver® se restablezcan manualmente
sin necesidad de abrir el panel.
Restablecimiento OL Kit de restablecimiento remoto
manual
Permite que la línea de productos 777 de MotorSaver® y
PumpSaver® se restablezcan manualmente sin necesidad de
abrir el panel.
Especificaciones
Características de entrada
Voltaje suplementario 100-240 V CA, 1Ø
Frecuencia 50-60 Hz
Rango de amperaje para carga
completa del motor 77C-KW/HP 2-25 amperios (circuito cerrado requerido)
26-90 amperios (directo)
91-800 amperios (CT externo)
77C-LR-KW/HP 1 amperios-2 amperios (circuito cerrado adicional)
2 amperios-9 amperios (directo)
Clasificación nominal de
resistencia para cortocircuitos 100 kA por UL y CSA
Consumo de energía 5 W (máximo)
Contactos de salida de clasificación
SPDT (Forma C) Clasificación de Capacidad experimental: 480 VA a
240 V CA
Propósito general: 10 A a 240 V CA
Duración estimada
Operaciones mecánicas 1 x 106
Operaciones eléctricas 1 x 105
en carga nominal
Exactitud a 25 °C (77 °F)
Voltaje ± 1 %
Corriente ± 3 % (directa, sin CT externos)
Temporización 5 % ± 1 segundo
Repetibilidad
Voltaje ± 0,5 % de voltaje nominal
Corriente ± 1 % (directa, sin CT externos)
Marcas de seguridad
UL UL508, UL1053
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2 Nro. 14
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencias
(RFI), Conducida IEC 61000-4-6, Nivel 3 10 V/m
Inmunidad a radiofrecuencias
(RFI), Radiada IEC 61000-4-3, Nivel 3 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 3,5 kV
Sobretensión
IEC IEC 61000-4-5, Nivel 3, línea a línea 2 kV;
Nivel 4, línea a tierra 4 kV
Conformidad con onda oscilatoria
y sobretensión ANSI/IEEE C62.41 al nivel de línea a línea de 6 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Vibración IEC 68-2-6, 10-55 Hz, 1 mm pico a pico, 2 horas,
3 ejes
Choque eléctrico IEC 68-2-27, 30 g, 3 ejes, 11 ms de duración, pulsos
de onda intermedia
Mecánica
Dimensiones H 77,47 mm (3,05"); A 97,79 mm (3,85");
P 128,27 mm (5,05")
Tamaño máximo de
conductor en orificios 16,5 mm (0,65") (con aislamiento)
Torque del terminal 0,8 Nm (7 in-lb).
Material de la carcasa Policarbonato
Peso 0,54 kg (1,2 lb)
Método de montaje Montaje en superficie o en riel DIN de 35 mm
Protección de bombas y motores – Protección de bombas monofásicas
Relevadores de protección
©2018 Controladores y Relevadores de Protección de Littelfuse 127
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
SERIE 77C-KW/HP
Entorno:
Rango de temperatura
Entorno de funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Entorno de almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Grado de contaminación 3
Clase de protección IP20, NEMA 1
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Rango de puntos
de funcionamiento programables
LV- Límite de voltaje bajo Configuración de 85 V - HV
LV- Límite de voltaje alto Configuración LV de 264 V
CONJUNTO de cantidad de
conductores o Relación
de CT (XXX:5)
77C: Conductores 1-10 o Relación de 100-800
77C-LR 1 o 2
OC - Límite de sobrecorriente (20-100 A) ÷ CONJUNTO o 80-120 % de CT primario
TC - Clase de activación
por sobrecorriente * 5, J5, 10, J10, 15, J15, 20, J20, 30, J30, o LIn (lineal)
RD1 - Temporizador de ciclo rápido 0, 2-500 s
RD2- Retardo de reinicio después
de fallas, excepto por corriente
insuficiente (temporizador de
enfriamiento del motor)** 2-500 min/s
RD3- Retardo de reinicio
después de una falla por
Corriente baja (temporizador
de recuperación por pozo seco) 2-500 min/s
#RU- Número de reinicios después
de fallar por corriente baja 0, 1, 2, 3, 4, A (automático)
ADDR- Dirección RS485 A01- A99
#RO-Número de reinicios
Después de fallar
por sobrecorriente 0, 1, 2, 3, 4, A (automático)
LP/PWS (PWS = Rango LP) 1 = 0,01-0,99 KW 5 = 0,01-1,30 HP
2 = 1,00-9,95 KW 6 = 1,34-13,3 HP
3 = 10,0-99,5 KW 8 = 13,4-133 HP
4 = 100-650 KW 9 = 134-871 HP
* Si aparece el prefijo “J” en la configuración de clase de activación, significa que la protección contra trabas
está activada. Si está programado en posición Lln, los retardos de activación por sobrecorriente son retardos
lineales fijos en posición OPT1.
** RD2 y RD3 se pueden configurar en minutos y segundos en la posición de programa OPT2.
CONFIGURACIÓN RD2 RD3 CONFIGURACIÓN RD2 RD3
0 Minutos Minutos 2 Segundos Minutos
1 Minutos Segundos 3 Segundos Segundos
Protección de bombas y motores – Protección de bombas monofásicas
www.littelfuse.com/77ckwhp
Relevadores de protección
128 ©2018 Controladores y Relevadores de Protección de Littelfuse
PROTECCIÓN DE MOTORES Y BOMBAS
7
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/sio-rtd
SIO-RTD-02-00
Protección de bombas y motores – Monitoreo de la temperatura
Descripción
El SIO-RTD es un sistema de adquisición de datos basado en un
microprocesador para medir temperaturas con precisión que incluye
detectores de temperatura de resistencia (RTD) y para monitorear
dispositivos de salida analógica de 4-20 mA en entornos industriales. Las
entradas RTD tienen filtros contra ruido y se calibran automáticamente
por compensación de cable de extensión, temperatura ambiente, y
otros factores que permiten obtener lecturas exactas en un rango de
temperatura especificado para diversos tipos de dispositivos RTD.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
8 entradas Módulo individual que puede recopilar múltiples puntos
de datos
Certificación Clase 1 CSA,
Zona 2, ubicación peligrosa Puede ser instalada en áreas peligrosas
Tipo de entrada seleccionable
individualmente
Flexible; puede utilizarse con entradas Pt100, Ni100,
Ni120, Cu10 RTD o de 4-20 mA
Terminado general Protege las placas de circuitos contra la corrosión y la
humedad
Monitoreo remoto Hasta 1,2 km de distancia con respecto a la red principal
Filtro de muesca Aísla el ruido de las aplicaciones de monitoreo de motores
Especificaciones
Voltaje de entrada 18 a 32 V CC, 2 W
Tipos RTD Pt100 (predeterminado), Ni100, Ni120, Cu10
Rango RTD -40 °C a 200 °C (104 °F a 392 °F) con detección de
apertura y cierre
Rango analógico 4-20 mA
Precisión
(Pt100, Ni100, Ni120) 1 °C (33 °F)
(Cu10) 3 °C (37 °F)
(4-20 mA) 0,1 mA
Compensación por guía Hasta de 20 Ω
Comunicaciones general Modbus RTU®
Terminado general Característica estándar
Aprobaciones cCSAus
Dimensiones H 87 mm (3,43"); A 112,5 mm (4,43");
P 56 mm (2,2")
Garantía 5 años
Montaje DIN, Superficie
Diagrama de conexiones
Monitor de entrada de temperatura
1234 5 6
ABIERTO
1234 5 6
OPEN
R
C D R C D R C D R C D R S
P
G
D C R D C R D C R D C - +
+
2
4
V 0
V S
H
S
H
S
H
S
H
INP 1
INP 8
INP 2
INP 7
PW R
COMM
INP 3
INP 6
INP 4
INP 5
COMM
S IO-RTD
MÓDULO DE ENTRADA
t
O t
O tO t
O
tO tO tO t
O
t
O
CONEXIÓN
ALTERNA RTD
DE 2 CABLES
S R D C H
RTD
CONEXIÓN
ALTERNA DE
4-20 mA
S R D C H
RTD
47,5 Ω
1 %
4-20 mA
INTERRUPTORES
DE SELECCIÓN DE
DISPOSICIÓN
PARA DISPOSICIÓN 01
SELECCIONADA, CONSULTE
LA TABLA 1
CONEXIÓN RTD
DE 3 CABLES
ROJO
VERDE
BLANCO
NEGRO AL PRÓXIMO
SIO-RTD
ROJO
VERDE
BLANCO
NEGRO
SE MUESTRA EL CABLE DE
INTERCONEXIÓN BELDEN 3124A
ALIMENTACIÓN
ELÉCTRICA DE +24 V CC
+ - + / B - / A
TIA-485 MODBUS
MASTER
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
34 33 3231 30 29 28 2726 2524 23 22 21 20 19
PWR
Para conocer el plano de dimensiones, consulte: Apéndice, página 515, Figura 49.
©2018 Controladores y Relevadores de Protección de Littelfuse 129 www.littelfuse.com/relayscontrols
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas
Para obtener mas información…
para descargar nuestro catálogo de
bombeo de agua dulce visite
Littelfuse.com/PumpProtection
CONTROLADORES DE BOMBA Y
CONTROLADORES DE NIVEL DE LÍQUIDOS
Protegen y deshabilitan una bomba si ocurre una condición peligrosa. PumpSaver®
ofrece una amplia variedad de controles tanto para aplicaciones monofásicas
como trifásicas. Los relevadores intrínsecamente seguros están específicamente
diseñados para conectarse en áreas peligrosas y no peligrosas
Serie ACBC-120 Controlador de alarma/Unidad de carga
de la batería ........................................................130
Serie PC-102 Conmutador de canal dual ..................................132
PC-105 Controlador de bomba de 5 canales...................133
Serie PC-XXX-LLC-CZ Relevadores de control del nivel de líquidos......134
Serie PC-XXX-LLC-GM Relevadores de control del nivel de líquidos......134
201-100-SLD Detector de falla en sellos de un solo canal.......136
460-15-100-LLS Sensor de nivel de líquidos de un solo canal......137
460-15-100-SLD Detector de falla en sellos de un solo canal.......139
Serie LLC1 Control de nivel de líquidos de placa abierta .....141
Serie LLC2 Control de nivel de líquidos de placa abierta .....143
Serie LLC4 Control de nivel de líquidos de conector octal ...145
Serie LLC5 Control de nivel de líquidos.................................147
Serie LLC6 Control de nivel para límite bajo en líquidos .....149
Serie LLC8 Control de nivel para límite bajo en líquidos .....151
Relevadores de cambio
Serie ALT Relevadores de alternancia de conector
de 8 pines............................................................153
ALT-XXX-1-SW /
Serie ALT-XXX-3-SW Relevadores alternativos.....................................155
Serie ARP Relevadores alternativos ....................................157
50R-400-ALT Relevadores alternativos ....................................159
Relevadores intrínsecamente seguros
ISS-100 Interruptor intrínsecamente seguro ....................160
ISS-101 Interruptor intrínsecamente seguro ....................161
Serie ISS-102 Interruptor intrínsecamente seguro
de dos canales.....................................................163
Serie ISS-105 Interruptor intrínsecamente seguro
de cinco canales..................................................165
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
130 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
Controlador de alarma y cargador de batería
para paneles de control de bomba
SERIE ACBC-120
Diagrama de conexiones
Descripción
La serie ACBC-120 es un controlador de alarma de doble propósito/
unidad de carga de la batería. Cuando hay una pérdida de energía
de 120 V CC, la terminal principal del ACBC-120 funciona como un
controlador de alarma que se activa. Cuando hay una pérdida de energía,
la energía de entrada se canaliza a una batería de seguridad recargable,
de plomo, y de 12 V CC y una alarma de 12 V CC que consta de una
luz estroboscópica y se activa una alarma. La alarma replica un patrón
de 2 s encendida/2 s apagada con una opción de “silenciar alarma” al
desactivar el sonido. Un indicador LED en la unidad también genera
alertas de que el dispositivo ha ingresado al modo de alarma.
Cuando hay una entrada de 120 V CC, el circuito de alarma puede ser
probado y el terminal secundario de la unidad actúa como un cargador
de batería de seguridad 12 V CC que se activa. En modo de carga rápida,
la unidad tiene la capacidad de generar hasta 100 mA de corriente de
carga. Sin embargo, el dispositivo normalmente se carga a una corriente
de 14 mA en modo mantenimiento. El circuito de alarma puede ser
probado al presionar el botón de prueba ubicado en la parte frontal de la
unidad o activando el interruptor externo mediante el pin de “contacto
de alarma”.
El dispositivo tiene la capacidad de indicar voltajes de batería bajos si
el voltaje cae por debajo de 10,5 V CC. El dispositivo puede también
detectar si no hay batería instalada o si ésta está conectada al revés. En
cualquiera de estos casos, el ACBC-120 indicará un error en la batería y
no iniciará la carga.
Para una clasificación de UL, se debe utilizar el conector modelo SD12-PC.
*Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores Serie SD es de
1,356 Nm (12 in-lb).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito de alarmas de
12 V CC
Activa la luz estroboscópica o la alarma cuando ocurre una
pérdida de energía
Modo de carga
rápida seleccionable
La unidad suministra una corriente de carga más alta hasta
de 100 mA (en modo normal es de 14 mA)
Temporizador de retardo de
disparo Previene activaciones no deseadas
Detección de fallas en la
batería y protección contra
polaridad inversa
Indica si el voltaje de la batería cae por debajo de 10,5 V CC
y puede detectar si no hay batería instalada o si la batería
está conectada al revés
Indicación LED Indicación visual del estado o activación de la unidad
Botón de prueba
Verificación de mantenimiento preventivo del circuito de
alarma presionando el botón de prueba en la unidad o
externamente a través de la conexión del contacto de alarma
Accesorios
Conector rectangular de 12 pines SD12-PC
Conector rectangular para el ACBC-120.
Montable en superficie de 12 pines.
ENTRADA
1210 V CA CONTACTO
DE ALARMA
SILENCIAR
ALARMA
BATERÍA
LUZ
ESTROBOSCÓPICA
Información para pedir
MODELO VOLTAJE
DE LÍNEA DESCRIPCIÓN
ACBC-120 120 V CA No incluye conector SD12-PC para montaje
ACBC-120-SD 120 V CA Incluye conector SD12-PC para montaje
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
www.littelfuse.com/acbc120
©2018 Controladores y Relevadores de Protección de Littelfuse 131
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
Especificaciones
Características de entrada
Voltaje de alimentación
Voltaje de entrada CA 120 V +/-10 %
Frecuencia 50/60 Hz
Corriente de entrada CA 0,018 A (máx.) 0,003 (típico)
Potencia de entrada CA Corriente de carga rápida 2,4 W (máx.)
Corriente de carga de mantenimiento (típica) de 0,4 W
Características funcionales
Carga de la batería
Características
Tipo de batería compatible Recargable de plomo de 12 V
Corriente de carga rápida 100 mA +/-10 %
Corriente de carga
para mantenimiento 14 mA +/-50 %
Nivel de alerta de batería baja 10,5 V
Características de salida
Salida para alarma
de luz estroboscópica 12 V CC a 1 A (máx.)
Salida para activación de alarma 12 V CC a 1 A (máx.)
Características generales
Rango de temperatura -40 °C a 60 °C (-40 °F a 140 °F)
SERIE ACBC-120
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Radiofrecuencia, radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 4, líneas de entrada de 4 kV;
líneas de alerta 4 kV
Marcas de seguridad
UL
(conector SD12-PC requerido) UL508 (Archivo #E68520)
Dimensiones H 44,45 mm (1,75"); A 60,325 mm (2,375");
P 104,775 mm (4,125") (con conector)
Peso 317,51 g (11,2 oz; 0,7 lb)
Método de montaje Montaje en superficie con tornillos n.º 8 o n.º 10
(insertar en conector SD12-PC)
Conector disponible Modelo SD12-PC (clasificación de UL 600 V)
El conector 600V puede montarse en superficie
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
www.littelfuse.com/acbc120
132 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/pc102
SERIE PC-102
Detector de filtración en sellos dual o detector de
filtración en sellos y sobretemperatura
Descripción
El PC-102 es un conector de doble canal que brinda protección dual
contra fallas en los sellos y sobretemperatura en aplicaciones de
bombeo sumergibles.
Ambas unidades tienen dos relevadores de salida aislados en C y dos
LED, los cuales se encienden cuando cada relevador de salida asociado
recibe energía.
El ajuste de sensibilidad (4,7 k-100 kΩ) permite al usuario definir la
impedancia de entrada en la cual los relevadores de salida cambiarán
de estado. La sensibilidad para el detector de sobretemperatura puede
definirse en 4 kΩ utilizando conectores DIP.
Esta unidad puede no ser compatible con bombas Flygt.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Terminales para
manipulación segura Cumplen los requisitos de seguridad IEC 61000
Diseño compacto para
montaje en riel DIN o en
superficie
Brinda flexibilidad en la instalación del panel
Indicador de estado LED Indicación visual de la activación del relevador
Dos canales de entrada Flexibilidad para aplicaciones de conector de dos canales o
bombeo de flujo combinado
Especificaciones
Características de entrada
Frecuencia 50/60 Hz
Características funcionales
Voltaje de detección por sonda 5 V CC pulsado
Sensibilidad 4,7 k-100 kΩ
Sensibilidad (para temperatura) Seleccionable 4 kΩ con conectores DIP
Lógica de entrada Directa o invertida
Retardo en el tiempo
antioscilaciones 0,5 o 2 s
Características de salida
Clasificación nominal de salida
de relevador (2 Forma C aislados)
Capacidad experimental 180 VA a 120 V CA, C150
Propósito general 5 A a 240 V CA
Características generales
Rango de temperatura -20 °C a 55 °C (-4 °F a 131 °F)
Potencia de entrada máxima 2 W
Conector desenchufable Conexiones Series MSTB Phoenix
Relevador de salida
Indicadores de estado LED
Torque de terminal 0,51 Nm (4,5 in-lb).
Rango de conexiones 12-20 AWG
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencias (RFI) IEC 61000-4-3, Nivel 3, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada de 4 kV
salidas/entradas de 2 kV
Marcas de seguridad
UL UL508 (Archivo #E68520)
Dimensiones H 88,9 mm (3,5"); A 52,93 mm (2,08");
P 59,69 mm (2,35")
Peso 408,23 g (14,4 oz; 0,9 lb)
Método de montaje Riel DIN de 35 mm o montaje en superficie
(tornillos n.º 6 o n.º 8)
24-240 V CA
24-240 V CA
120 V CA
CARGA
CARGA
CARGA
RELEVADOR 1
RELEVADOR 2
SELLO 1
SELLO 1
PRUEBA 1 PRUEBA 2
SELLO 2
SELLO 2
CARGA
24-240 V CA
24-240 V CA
120 V CA
INTERRUPTOR DE
TEMPERATURA
PRUEBA
SELLO
TEMP.
TEMP. SELLO
RELEVADOR 2
RELEVADOR 1
CARGA
CARGA
CARGA
CARGA
Diagrama de conexiones
PC-102CICI-DL PC-102CICI-LT
Información para pedir
MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN
PC-102CICI-DL 120 V CA nominal
El detector de filtración en sellos dual
utiliza las entradas para detectar fallas en
los sellos y asignar energía al relevador
de salida. Lógica de entrada directa o
invertida, interruptor DIP seleccionable
PC-102CICI-LT 120 V CA nominal
El detector de filtración en sellos y
sobretemperatura utiliza una entrada
para detectar fallas en los sellos y la
entrada de temperatura para identificar
sobrecalentamientos del motor.
Configurable para adaptarse a diversos
tipos de sondas. Lógica de entrada
de sellos directa o invertida, además
de restablecimiento de activación por
sobretemperatura automático o manual,
interruptor DIP seleccionable
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 10.
©2018 Controladores y Relevadores de Protección de Littelfuse 133
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pc105
Controlador de bomba con funcionalidades doble,
triple o cuádruple, o relevador de 5 canales
PC-105
Diagrama de conexiones
Descripción
El PC-105 es un controlador de bomba de 5 canales diseñado para
administrar múltiples aplicaciones de bombeo. Además, puede operar
como interruptor de 5 canales.
Las funciones de control del PC-105 soportan todas las configuraciones
de bombeo de flujo variable estándares de la industria.
Puede indicar alarmas bajas, altas y fuera de secuencia y utilizar
controles de bomba alterna y no alterna. La bomba no alterna puede
utilizarse como bomba auxiliar o bomba de emergencia.
Utilizando los interruptores DIP integrados, las bombas individuales
pueden desactivarse en el momento de reparaciones o mantenimiento.
Características
g Diseño compacto
g Alarmas bajas, altas y fuera de secuencia
g Retardo en el tiempo variable/retardo en bombeo de 2-255 s
g Control de bomba doble SPS (detención de bombeo separado)
g Control de bombas doble, triple o cuádruple
g Funciones de bombeo de flujo variable
g Configuración de silencio exterior, restablecimiento y alternación
g Configuración de relevador de cinco canales
g Montable en riel DIN o en superficie
Especificaciones
Características de entrada
Voltaje de alimentación 120 V CA
Frecuencia 50*/60 Hz
Características funcionales
Voltaje de detección de sonda 5 V CC continuo
Características de salida
Clasificación nominal de salida
de relevador:
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 7 A a 240 V CA
Características generales
Rango de temperatura -20 °C a 55 °C (-4 °F a 131 °F)
Potencia de entrada máxima 4 W
Rango de conexiones 12-20 AWG
Torque de terminal 0,51 Nm (4,5 in-lb). (máx.)
Retardo de corriente
de inserción para bomba 2 s
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV,
aéreo 8 kV
Inmunidad a
radiofrecuencias (RFI) IEC 61000-4-3, Nivel 3, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada
de 4 kV
salidas/entradas de 2 kV
Marcas de seguridad
UL UL508 (Archivo #E68520)
Dimensiones H 94,06 mm (3,703"); A 127,64 mm (5,025");
P 59,69 mm (2,35")
Peso 544,31 g (19,2 oz; 1,2 lb)
Método de montaje Riel DIN de 35 mm o montaje en superficie
(tornillos n.º 6 o n.º 8)
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
I1 I2 I3 I4 I5 IC
#1
SALIDA SALIDA SALIDA SALIDA
ENTRADA ENTRADA ENTRADA ENTRADA ENTRADA COMÚN
SALIDA PARA
RETRASO DE TIEMPO
#2 #3 #4 #5
INPUT
CARGA
1
CARGA
3
120 V CA
CARGA
2
CARGA
4
CARGA
5
1-800-843-8848 www.pumpsaver.com
Figure 11: Typical Wiring for 5-channel Relay – Mode 0
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 511, Figura 12.
134 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/pcxxxllccz-pcxxxllcgm
SERIES PC-XXX-LLC-CZ/PC-XXX-LLC-GM
Control de nivel de líquidos
Diagrama de conexiones
Descripción
Las series PC-xxx-LLC-CZ y PC-xxx-LLC-GM son relevadores de control
de nivel de líquidos para controlar operaciones de bombeo de líquidos
conductivos en aplicaciones de bombeo de flujo variable. Las unidades
vienen en dos rangos de voltaje diferentes (ver especificaciones a
continuación).
Las unidades tienen una perilla de sensibilidad ajustable (4,7 kΩ a 100 kΩ)
que se ajusta según el nivel de resistencia en que desea definir las
sondas (se vende por separado) para detectar los líquidos conductivos.
Las unidades tienen un relevador de retardo en el tiempo antioscilaciones
integrado que previene el paso de energía al relevador si la resistencia de
la sonda aumenta o disminuye momentáneamente el punto de ajuste de
sensibilidad (debido a salpicaduras de líquido en el tanque).
Las unidades activan su relevador interno conforme a las entradas de
una sonda de nivel alto y bajo y según una referencia común (al utilizar un
tanque conductivo) o sonda común (al utilizar un tanque no conductivo).
PC-xxx-LLC-CZ
g Compatible con unidad de control de líquidos series
PNRU y PNR de Crouzet
PC-xxx-LLC-GM
g Compatible con control de Propósito general Serie 16M de Gems
Para clasificación de UL, se debe utilizar el modelo de conector OT08PC o P1011-6.
Nota: El torque de los terminales de tornillo recomendado por el fabricante para los
conectores octales Serie OT es de 1,356 Nm (12 in-lb).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Retardo en el tiempo
antioscilaciones (2 s)
Previene el ciclo rápida de la bomba debido a turbulencia
en el tanque
Sensibilidad ajustable
(4,7 a 100 kΩ)
Le permite al usuario calibrar la resistencia de detección
para prevenir activaciones falsas debido a residuos o
espuma.
Diseño de sonda dual
(más sonda común)
Brinda al usuario la capacidad de definir el nivel
diferencial requerido
DIAGRAMA DE CONEXIONES TÍPICO PARA PC-XXX-LLC-CZ POTENCIA DE ENTRADA
CONTACTOR
MAGNÉTICO MOTOR
CONTROL DE
ALIMENTACIÓN
PRUEBA
ALTA
PRUEBA
BAJA
TANQUE
DIAGRAMA DE CONEXIONES TÍPICO PARA PC-XXX-LLC-GM
POTENCIA
DE ENTRADA
CONTACTOR
MAGNÉTICO MOTOR
CONTROL DE
ALIMENTACIÓN
PRUEBA
ALTA
PRUEBA
BAJA
TANQUE
Información para pedir
MODELO VOLTAJE
DE LÍNEA DESCRIPCIÓN
PC-100-LLC-CZ 95-120 V CA Compatible con unidad de control de líquidos
series PNRU y PNR de Crouzet
PC-200-LLC-CZ 190-240 V CA Compatible con unidad de control de líquidos
series PNRU y PNR de Crouzet
PC-100-LLC-GM 95-120 V CA Compatible con control de nivel de líquidos
Series 16M de Gems
PC-200-LLC-GM 190-240 V CA Compatible con control de nivel de líquidos
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
Series 16M de Gems
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
©2018 Controladores y Relevadores de Protección de Littelfuse 135
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
Accesorios
Conector octal de 8 pines OT08PC
Conector octal para unidades de conexión directa.
Montable en riel DIN y superficie de 8 pines.
Clasificación nominal para 10 A a 600 V CA.
Especificaciones
Características de entrada
Voltaje de alimentación
PC-100-LLC-CZ 95-120 V CA
PC-100-LLC-GM 95-120 V CA
PC-200-LLC-CZ 190-240 V CA
PC-200-LLC-GM 190-240 V CA
Frecuencia 50/60 Hz
Características funcionales
Voltaje de detección por sonda 5 V CC pulsado
Retardo en el tiempo
antioscilaciones 2 s
Sensibilidad ajustable 4,7 K a 100 K ajustable
Características de salida
Clasificación nominal
de contacto de salida
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
SERIES PC-XXX-LLC-CZ/PC-XXX-LLC-GM
Características generales
Rango de temperatura -40 °C a 70 °C (-40 °F a 158 °F)
Potencia de entrada máxima 5 W
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV,
aéreo 8 kV
Inmunidad a radiofrecuencia (RFI) 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, controles y potencia de
entrada de 2 kV
Marcas de seguridad
UL (conector octal OT08PC
requerido) UL508 (Archivo #E68520)
CE IEC60947-6-2
Dimensiones (al instalar en
base de conector) H 44,45 mm (1,75"); A 60,33 mm (2,375");
P 104,78 mm (4,125")
Peso 294,84 g (10,4 oz; 0,65 lb)
Método de montaje Montaje en riel DIN o en superficie
(conectar en conector OT08PC)
Conector disponible Modelo OT08PC (clasificación de UL 600 V)
El conector de 600 V puede estar montado en superficie o instalado en riel DIN.
www.littelfuse.com/pcxxxllccz-pcxxxllcgm
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
136 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/201100SLD
Detector de filtración en sellos de un solo canal
Descripción
El modelo 201-100-SLD es un detector de filtración en sellos tipo
conector de 8 pines para detectar fallas en los sellos para bombas
sumergibles. Un relé basado en microprocesador que monitorea el
sello del eje de un motor de bomba sumergible. Una sonda resistiva
se instala en la cavidad del sello. Si el agua se filtra en la bomba, se
disminuye la resistencia calculada por la sonda. Cuando la resistencia
cae por debajo del punto de ajuste de la sensibilidad, la unidad se
activará y los contactos del relevador cambiarán de estado. La unidad se
restablecerá automáticamente al depurar la falla.
Características y beneficios
J Indicador de estado LED
J Diseño de conexión compacto
J Montable en riel DIN o en superficie mediante la base octal
Accesorios
Conector octal de 8 pines OT08PC
Conector octal para unidades de conexión directa.
Montable en riel DIN y superficie de 8 pines.
Clasificación nominal para 10 A a 600 V CA.
Especificaciones
Voltaje de control 110/120 V CA nominal
Frecuencia 50/60 Hz
Sensibilidad 4,7 k-100 kΩ
Voltaje de detección por sonda 5 V CC pulsado
Clasificación nominal
de contacto de salida SPDT
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
Rango de temperatura -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Potencia de entrada máxima 5 W
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia,
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada
y controles de 3,5 kV
IEC IEC 61000-4-5, Nivel 3, línea a línea de 4 kV;
Nivel 4, línea a tierra 4 kV
ANSI/IEEE Conformidad con onda circular y sobretensión
C62.41 a un nivel de 6 kV linea a linea
Prueba de alto potencial Conforme con UL508
(2 x V nominal +1000 V por 1 minuto).
UL* UL508 (Archivo #E68520)
CE IEC 60947-6-2
Carcasa Policarbonato
Dimensiones H 44,45 mm (1,75"); A 60,325 mm (2,375");
P (con conector) 104,78 mm (4,125")
Peso 317,51 g (11,2 oz; 0,7 lb)
Método de montaje Montaje en riel DIN o en superficie (conectar
en conector OT08PC)
Conector disponible Modelo OT08PC (clasificación de UL 600 V)
Aprobaciones UL, CE
*Para clasificación de UL, debe utilizarse con conector modelo OT08PC.
El conector de 600 V puede estar montado en superficie o instalado en riel DIN.
Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores Octal
Serie OT y Serie RB es de 1,356 Nm (12 in-lb).
201-100-SLD
Diagrama de conexiones
CONTROL DE ALIMENTACIÓN
DE 24-240 V CA LUZ
PRUEBA
ALARMA
CONECTOR OCTAL
*
Clasificación UL al utilizarse en conjunto
con el conector OT08PC solamente.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
©2018 Controladores y Relevadores de Protección de Littelfuse 137
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/46015100LLS
Descripción
El 460-15-100-LLS es un sensor de nivel de líquidos que detecta la
presencia de líquidos conductivos. Una sonda se instala en el nivel
deseado en el tanque y se conecta a la unidad PumpSaver®. Al
sumergir la sonda, los contactos de salida del relevador cambiarán
de estado tan pronto como se cumpla el tiempo antioscilación. El
temporizador antioscilaciones ajustable cumple la función de prevenir
interrupciones debido a las ondas o salpicaduras en el tanque.
La lógica del relevador puede ser invertida para que los contactos
de salida del relevador cambien de estado cuando la sonda no
esté sumergida. Esto da versatilidad a la unidad para utilizarse con
aplicaciones de bombeo de flujo variable.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Protección de
sonda única
Las sondas están protegidas contra la formación de
sedimentos mediante señales CC pulsadas entre las sondas
Lógica del relevador
invertible
Brinda flexibilidad para ser utilizada en aplicaciones de
bombeo de flujo variable
Temporizador
antioscilaciones ajustable
Previene interrupciones ocasionadas por ondas o
salpicaduras en el tanque
Indicador de estado LED Proporciona indicaciones visuales sobre el estado del
relevador
Especificaciones
Características de entrada
Voltaje de control 110/120 V CA nominal
Frecuencia 50/60Hz (*Nota: 50 Hz aumentarán todos los
temporizadores de retardo en 20 %)
Sensibilidad 100 kΩ
Características funcionales
Voltaje de detección por sonda 5 V CC pulsado
Retardo en el tiempo
antioscilaciones 2-60 s
Características de salida
Clasificación nominal del contacto
de salida – (Dos Forma A - SPST)
Capacidad experimental 360 VA a 240 V CA
Propósito general 8 A a 240 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Potencia de entrada máxima 2 W
Clase de protección IP20, NEMA 1 (seguro para manipular)
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque de terminal 0,51 Nm (4,5 in-lb).
Cableado 12-20 AWG
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV,
aéreo 8 kV
Inmunidad a
radiofrecuencia; radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada
y controles de 3,5 kV
Sensor de nivel de líquidos de un solo canal
CONTROL DE ALIMENTACIÓN
DE 24-240 V CA
ALARMA
PARA PLC U
OTRO CONTROL
PRUEBA
120 V CA
(Modelo 460-15-100-LLS)
460-15-100-LLS
Diagrama de conexiones
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 10.
138 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/46015100LLS
Sobretensión
IEC IEC 61000-4-5, Nivel 3, 4 kV línea a línea;
Nivel 4, 4 kV línea a tierra
ANSI/IEEE Conformidad con onda circular y sobretensión
C62.41 a un nivel de 6 kV linea a linea
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Marcas de seguridad
UL UL508 (Archivo #E68520)
CE IEC 60947
Carcasa Policarbonato
Dimensiones H 88,9 mm (3,5"); A 52,93 mm (2,08");
P 59,69 mm (2,35")
Peso 453,59 g (16 oz; 1 lb)
Método de montaje Riel DIN de 35 mm o montaje en superficie
(tornillos n.º 6 o n.º 8)
460-15-100-LLS
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 139
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/46015100SLD
Descripción
El modelo 460-15-100-SLD es un detector de filtración en sellos para
detectar fallas en los sellos para bombas sumergibles. Un relevador
basado en microprocesador monitorea el sello del eje de un motor
de bomba sumergible. Una sonda resistiva se instala en la cavidad
del sello. Si el agua se filtra en la bomba, se disminuye la resistencia
calculada por la sonda. Cuando la resistencia cae por debajo del punto
de ajuste de la sensibilidad, la unidad se activará y los contactos del
relevador cambiarán de estado. La lógica del relevador de salida puede
invertirse extrayendo un empalme externo. La unidad se restablecerá
automáticamente al depurar la falla.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Lógica de protección de
sonda única
Las sondas están protegidas contra la formación de sedimentos
mediante señales CC pulsadas entre las sondas
Lógica del relevador
invertible
Brinda flexibilidad para ser utilizada en aplicaciones de bombeo
de flujo variable
Indicador de estado LED Proporciona indicaciones visuales sobre el estado del relevador
2 contactos de relevador Control de cargas independientes en circuitos diferentes
Especificaciones
Características de entrada
Voltaje de control 110/120 V CA nominal
Frecuencia 50/60Hz (*Nota: 50 Hz aumentarán todos los
temporizadores de retardo en 20 %)
Características funcionales
Sensibilidad 4,7 k-100 kΩ
Voltaje de detección por sonda 5 V CC pulsado
Características de salida
Clasificación nominal del contacto
de salida – (Dos Forma A - SPST)
Capacidad experimental 360 VA a 240 V CA
Propósito general 8 A a 240 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Potencia de entrada máxima 2 W
Clase de protección IP20, NEMA 1 (seguro para manipular)
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque de terminal 0,51 Nm (4,5 in-lb).
Cableado AWG 12-20 AWG
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto 6 kV, aéreo 8 kV
Inmunidad a
radiofrecuencia; radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada y
controles de 3,5 kV
Detector de filtración en sellos de un solo canal
CONTROL DE ALIMENTACIÓN
DE 24-240 V CA
ALARMA LUZ
PARA PLC U
OTRO CONTROL
PRUEBA
120 V CA
460-15-100-SLD
Diagrama de conexiones
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 10.
140 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/46015100SLD
Sobretensión
IEC IEC 61000-4-5, Nivel 3, 4 kV línea a línea;
Nivel 4, 4 kV línea a tierra
ANSI/IEEE Conformidad con onda circular y sobretensión
C62.41 a un nivel de 6 kV linea a linea
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Marcas de seguridad
UL UL508 (Archivo #E68520)
CE IEC 60947
Carcasa Policarbonato
Dimensiones H 88,9 mm (3,5"); A 52,93 mm (2,08");
P 59,69 mm (2,35")
Peso 453,59 g (16 oz; 1 lb)
Método de montaje Riel DIN de 35 mm o montaje en superficie
(tornillos n.º 6 o n.º 8)
460-15-100-SLD
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 141
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/LLC1
SERIE LLC1
Descripción
La serie LLC1 es un control de nivel de líquidos conductivos de sonda
única diseñado para equipo de fabricantes originales y aplicaciones
comerciales. Esta unidad puede ser ordenada para operaciones de
drenaje fijo o llenado fijo. Un retardo de tiempo (1-60 s) impide el ciclo
rápido del relevador de salida. En unidades ajustables, el ajuste de la
sensibilidad permite una detección exacta de niveles y a su vez ignora
agentes de espuma y residuos flotantes. El voltaje CA aislado se
proporciona en la sonda para prevenir la electrolisis. Una corriente lenta
menor a 1 mA determina la presencia o ausencia de líquidos entre la
sonda principal y la sonda común. La placa de circuitos impresa en la
Serie LLC1 tiene revestimiento conformante para resistir la corrosión y
humedad.
Funcionamiento
Drenaje (modo de bomba de flujo decreciente): cuando el nivel de
líquido aumenta y toca la sonda, se inicia un retardo en el tiempo fijo.
Este retardo de tiempo impide el ciclo rápido del relevador de salida y su
carga. Al finalizar el retardo de tiempo, el relevador de salida se energiza
y permanece energizado hasta que el nivel de líquidos disminuya a
un nivel inferior respecto de la sonda. El relevador de salida luego se
desenergiza y permanece desenergizado hasta que el líquido vuelva a
tocar la sonda.
Llenado (modo de bomba de flujo ascendente): cuando el nivel de
líquido cae debajo del nivel de la sonda, se inicia un retardo de tiempo
fijo. Este retardo de tiempo impide el ciclo rápido del relevador de
salida y su carga. Al finalizar el retardo de tiempo, el relevador de salida
se energiza y permanece energizado hasta que el nivel de líquidos
aumente y toque la sonda. El relevador de salida luego se desenergiza y
permanece desenergizado hasta que el líquido vuelva a caer debajo del
nivel de la sonda.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Voltaje CA aislado en sonda Previene la formación de sedimentos en la sonda
Diseño de PCB abierto Diseño que favorece el ahorro de costos para OEM y
aplicaciones comerciales
Revestimiento PCB conforme Protege contra la corrosión y la humedad
Ajuste de la sensibilidad Brinda detección de nivel exacto y a su vez ignora la
espuma y los residuos flotantes
Diagrama de conexiones
Controladores de nivel de líquidos para placa abierta
L1 N/L2
Tanque metálico o
utilizar sonda adicional
C
P = Sonda
L = Carga
V = Voltaje
∆S = Ajuste de la
sensibilidad
Los contactos A, B y C
están aislados.
Se requiere de una conexión
de sonda común a tanque
conductivo o a una sonda
adicional.
Información para pedir
MODELO VOLTAJE DE
ENTRADA OPERACIÓN RETARDO
DE TIEMPO
RESISTENCIA DE
DETECCIÓN MONTAJE
LLC14A1AX 120 V CA Drenaje 1 s Ajustable 0,5 en separadores de nylon (3)
LLC14A5AX 120 V CA Drenaje 5 s Ajustable 0,5 en separadores de nylon (3)
LLC14B15AX 120 V CA Llenado 15 s Ajustable 0,5 en separadores de nylon (3)
LLC14B1AX 120 V CA Llenado 1 s Ajustable 0,5 en separadores de nylon (3)
LLC14B60AX 120 V CA Llenado 60 s Ajustable 0,5 en separadores de nylon (3)
LLC16A25AX 230 V CA Drenaje 25 s Ajustable 0,5 en separadores de nylon (3)
LLC16A3AX 230 V CA Drenaje 3 s Ajustable 0,5 en separadores de nylon (3)
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 40.
142 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/LLC1
SERIE LLC1
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in) son
fabricados con un barril aislado para brindar resistencia
a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Electrodo PHST-38QTN
Diseñado para una presión de vapor máxima de
240 PSI; 204 °C (400 °F). Sin reconocimiento de
UL353.
Sonda roscada LLP-24 (24")
Sonda de acero inoxidable roscada cuya longitud es de
61 cm (24"). Para utilizar con electrodos de control de
nivel de líquidos PHST-38QTN.
Especificaciones
Control
Tipo Sensor de resistencia (monofásica) de ENCENDIDO/
APAGADO con retardo de tiempo integrado para
prevenir el ciclo rápido
Voltaje de detección CA de voltaje bajo entre la sonda principal y la sonda
común. Con aislamiento de entrada y salida.
Resistencia de detección Fija o ajustable para 250 KΩ
Tolerancia de la resistencia
de detección Ajustable, rango garantizado
Fija desde fábrica ± 10 %
Retardo de tiempo
Rango Fijo 1-60 s en incrementos de 1 s
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia
24 V CA -15 %-20 %
120 y 230 V CA -20 %-10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Relevador electromecánico
Forma Sin aislamiento, SPST y aislado, contactos SPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Voltaje de aislamiento ≥ 1500 V RMS entre entrada, salida y sonda
Mecánica
Montaje Montaje en superficie para sonda común con dos
tornillos n.º 6 (M3,5 x 0,6) o distanciadores de nylon
de 12,7 mm (0,50 in) con tres tornillos n.º 6 (M3,5 x
0,6) (utilizar 5 terminales para sonda común)
Terminación Terminales de conector rápido macho (6,35 mm)
Dimensiones (Placa abierta) H 88,9 mm (3,5"); A 69,9 mm (2,75");
P 50,8 mm (2")
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 55 °C/-40 °C a 80 °C
Revestimiento La placa de circuitos impresa tiene revestimiento
conforme para resistir a la corrosión y humedad
Peso ≅ 247 g (8,7 oz)
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 143
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/LLC2
SERIE LLC2
Descripción
La serie LLC2 es un control de nivel de líquidos conductivos de sonda
dual diseñado para equipo de fabricantes originales y aplicaciones
comerciales. Los modelos están disponibles para operaciones de
drenaje o llenado. El transformador aislado de 12 V CA se proporciona
en la sonda para prevenir la electrolisis. Una corriente lenta menor a
1 mA determina la presencia o ausencia de líquidos entre la sonda
principal y la sonda común. En unidades ajustables, el ajuste de la
sensibilidad permite una detección exacta de niveles y a su vez ignora
agentes de espuma y residuos flotantes. La placa de circuitos impresa
en la Serie LLC2 tiene revestimiento conformante para resistir la
corrosión y humedad.
Funcionamiento
Drenaje (Modo de bomba de flujo descendiente): cuando el nivel de
líquidos aumenta y toca la sonda de nivel alto, el relevador de salida se
energiza y permanece energizado hasta que el nivel de líquido disminuya
por debajo de la sonda de nivel bajo. El relevador de salida luego se
desenergiza y permanece desenergizado hasta que el líquido vuelva a
tocar la sonda de nivel alto.
Llenado (Modo de bomba de flujo ascendente): cuando el nivel
de líquidos cae por debajo de la sonda de nivel bajo, el relevador de
salida se energiza y permanece energizado hasta que el nivel de líquido
aumente y toque la sonda de nivel alto. El relevador de salida luego se
desenergiza y permanece desenergizado hasta que el líquido vuelva a
caer debajo del nivel de la sonda de nivel bajo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sondas 12 V CA aisladas Previenen la formación de sedimentos en las sondas
Diseño de PCB abierto Diseño que favorece el ahorro de costos para equipo de
fabricantes originales y aplicaciones comerciales
Revestimiento PCB conforme Protege contra la corrosión y la humedad
Ajuste de la sensibilidad Brinda detección de nivel exacto y a su vez ignora la
espuma y los residuos flotantes
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de tornillo
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Electrodo PHST-38QTN
Diseñado para una presión de vapor máxima de 240 PSI;
204 °C (400 °F). Sin reconocimiento de UL353.
Sonda roscada LLP-24 (24")
Sonda de acero inoxidable roscada cuya longitud es de
61 cm (24"). Para utilizar con electrodos de control de
nivel de líquidos PHST-38QTN.
Controladores de nivel de líquidos para placa abierta
Información para pedir
MODELO VOLTAJE DE
ENTRADA OPERACIÓN TERMINACIÓN RESISTENCIA DE
DETECCIÓN
LLC24A2AN 120 V CA Drenaje Bloque de
terminal
Ajustable
a 100 kΩ
LLC24A2F50N 120 V CA Drenaje Bloque de
terminal Fijo a 50 kΩ
LLC24B1AC 120 V CA Llenado 6,35 mm (0,25")
Conector rápido
Ajustable
a 100 kΩ
LLC24B1F26C 120 V CA Llenado 6,35 mm (0,25")
Conector rápido Fijo a 26 kΩ
LLC24B2F50N 120 V CA Llenado Bloque de
terminal Fijo a 50 kΩ
LLC26A1F25C 230 V CA Drenaje 6,35 mm (0,25")
Conector rápido Fijo a 25 kΩ
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
L1 N/L2
Tanque metálico
o utilizar sonda
adicional
V = Voltaje
L = Sonda de nivel bajo
H = Sonda de nivel alto
C = Sonda común
P = Sonda
∆S = Ajuste de la
sensibilidad
NC = Normalmente
cerrada
NO = Normalmente
abierta
Conecta la sonda común al tanque conductivo. Es
necesaria una sonda adicional para tanques aislados o
no conductivos.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 41.
144 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/LLC2
SERIE LLC2
Especificaciones
Control
Tipo Detección de resistencia para identificación de nivel
bajo y alto de líquidos conductivos
Voltaje de detección 12 V CA en terminales de sonda
Resistencia de detección Fija o ajustable para 100 KΩ
Tolerancia de la resistencia
de detección Ajustable: rango garantizado
Fija: ± 10 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia
24 V CA -15 %-20 %
120 y 230 V CA -20 %-10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Relevador electromecánico
Forma Aislada, SPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre entrada, salida y sonda
Mecánica
Montaje Montaje en superficie con dos o cuatro tornillos n.º 6
(M3,5 x 0,6)
Terminación Terminales de conector rápido macho dúplex de
6,35 mm (0,25 in). Bloques de terminal para cables
n.º 14 AWG de 2,5 mm2
)
Dimensiones (Placa abierta) H 101,6 mm (4"); A 76,2 mm (3");
P 50,8 mm (2")
Entorno
Temperatura de funcionamiento/
almacenamiento -20 °C a 55 °C/-40 °C a 80 °C
Revestimiento La placa de circuitos impresa tiene revestimiento
conformante para resistir la corrosión y humedad
Peso ≅ 255 g (9 oz)
Dimensiones de montaje
4.0
(101.6)
0.5
(12.7) 2.0
(50.8)
0.163 (4.14)
3.0
(76.2) 0.44
(11.35) 0.25
(6.35)
3.62
(91.9)
3.5
(88.9)
2.12
(53.8)
2.5
(63.5)
0.19
(4.83)
0.25
(6.35)
CLAVE DE
DIAGRAMA
NÚMEROS DE MODELO QUE
TERMINAN EN:
N C
W 11,176 mm
(0,440")
6,350 mm
(0,250")
X 91,948 mm
(3,620")
88,900 mm
(3,500")
Y 53,848 mm
(2,120")
63,500 mm
(2,500")
Z 4,826 mm
(0,190")
6,350 mm
(0,250")
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 145
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/LLC4
SERIE LLC4
Descripción
El LLC4 combina un sistema de circuitos de detección de resistencia
con temporización de estado sólido para realizar mantenimiento de
nivel de sonda única. En unidades ajustables, el ajuste de la sensibilidad
permite una detección exacta de niveles y a su vez ignora agentes
de espuma y residuos flotantes. El voltaje aislado de 12 V CA se
proporciona en la sonda para prevenir la electrolisis. Una corriente
lenta menor a 1 mA determina la presencia o ausencia de líquidos
conductivos entre la sonda principal y la sonda común. La serie LLC4
puede utilizarse con diversos tipos de transductores de voltaje bajo
(cambio de resistencia) para cumplir funciones de control como control
del límite de temperatura, control del límite por imágenes, detección de
condensación, detección de hielo.
Funcionamiento
Drenaje (modo de bomba de flujo decreciente): cuando el nivel de
líquido aumenta y toca la sonda, se inicia un retardo en el tiempo fijo.
Este retardo de tiempo impide el ciclo rápido del relevador de salida y su
carga. Al finalizar el retardo de tiempo, el relevador de salida se energiza
y permanece energizado hasta que el nivel de líquidos disminuya a un
nivel inferior respecto del nivel de la sonda. El relevador de salida luego se
desenergiza y permanece así hasta que el líquido se eleva y toca la sonda.
Llenado (modo de bomba de flujo ascendente): cuando el nivel de
líquidos cae por debajo de la sonda, se inicia el retardo de tiempo. Este
retardo de tiempo impide el ciclo rápido del relevador de salida y su
carga. Al finalizar el retardo de tiempo, el relevador de salida se energiza
y permanece energizado hasta que el nivel de líquidos aumente y toque
la sonda. El relevador de salida luego se desenergiza y permanece así
hasta que el líquido vuelve a caer por debajo del nivel de la sonda.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sondas 12 V CA aisladas Previene la acumulación de sarro en la sonda
Conexión por conector octal
de 8 pines estándar del sector Elimina la necesidad de utilizar conectores especiales
Ajuste de la sensibilidad Brinda detección de nivel exacto y a su vez ignora la
espuma y los residuos flotantes
Diagrama de conexiones
Controladores de nivel de líquidos de conector octal
L1 N/L2
Tanque metálico
o utilizar sonda
adicional
P = Sonda
C = Sonda común
V = Voltaje
Los contactos del relevador están
aislados.
Conecta la sonda común al
tanque conductivo. Es necesaria
una sonda adicional para tanques
aislados o no conductivos.
Información para pedir
MODELO VOLTAJE DE
ENTRADA OPERACIÓN RETARDO
DE TIEMPO
RESISTENCIA DE
DETECCIÓN MODELO
VOLTAJE
DE
ENTRADA
OPERACIÓN RETARDO
DE TIEMPO
RESISTENCIA DE
DETECCIÓN
LLC42A10A 24 V CA Drenaje 10 s Ajustable 1-250 kΩ LLC44B1A 24 V CA Llenado Ajustable 1-250 kΩ
LLC42A1A 24 V CA Drenaje 1 s Ajustable 1-250 kΩ LLC44A60A 120 V CA Drenaje 60 s Ajustable 1-250 kΩ
LLC42B15A 24 V CA Llenado 15 s Ajustable 1-250 kΩ LLC44B20A 120 V CA Llenado 20 s Ajustable 1-250 kΩ
LLC44A10A 120 V CA Drenaje 10 s Ajustable 1-250 kΩ LLC44B2A 120 V CA Llenado 2 s Ajustable 1-250 kΩ
LLC44A15A 120 V CA Drenaje 15 s Ajustable 1-250 kΩ LLC44B30A 120 V CA Llenado 30 s Ajustable 1-250 kΩ
LLC44A1A 120 V CA Drenaje 1 s Ajustable 1-250 kΩ LLC44B4A 120 V CA Llenado 4 s Ajustable 1-250 kΩ
LLC44A2A 120 V CA Drenaje 2 s Ajustable 1-250 kΩ LLC44B5A 120 V CA Llenado 5 s Ajustable 1-250 kΩ
LLC44A4A 120 V CA Drenaje 4 s Ajustable 1-250 kΩ LLC44B5F100 120 V CA Llenado 5 s Fijo a 100 kΩ
LLC44A5A 120 V CA Drenaje 5 s Ajustable 1-250 kΩ
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
8 PINES
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 33.
146 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/LLC4
SERIE LLC4
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje de superficie con dos tornillos o
anillos de presión n.º 6 (M 3,5 x 0,6) en riel DIN de
35 mm. Utilice abrazaderas de presión PSC8.
Abrazaderas de presión PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilizar con conector octal NDS-8. Se
venden por pares.
Electrodo PHST-38QTN
Diseñado para una presión de vapor máxima de 240 PSI;
204 °C (400 °F). Sin reconocimiento de UL353.
Sonda roscada LLP-24 (24")
Sonda de acero inoxidable roscada cuya longitud es de
61 cm (24"). Para utilizar con electrodos de control de
nivel de líquidos PHST-38QTN.
Especificaciones
Control
Tipo Sensor de resistencia (monofásica) de ENCENDIDO/
APAGADO con retardo de tiempo integrado para
prevenir el ciclo rápido
Voltaje de detección 12 V CA
Resistencia de detección Fija o ajustable hasta 250 KΩ
Resistencia de detección
Tolerancia Ajustable: 1K ±500Ω en límite bajo;
250K ±25% en límite alto
Fijo desde fábrica: ± 10 % o 500 Ω, lo que sea mayor
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia
24 V CA -15 %, +20 %
120 y 230 V CA -20 %, +10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Relevador electromecánico
Forma Aislada, SPDT
Clasificación nominal 4 A resistiva a 240 V CA;
1/10 HP a 240 V CA
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Voltaje de aislamiento ≥ 1500 V RMS entre entrada, salida y sonda
Mecánica
Montaje Conexión por puerto
Terminación Conector octal de 8 pines
Dimensiones H 73,9 mm (2,91"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 80 °C
Peso ≅ 170 g (6 oz)
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 147
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/LLC5
Controladores de nivel de líquidos
Descripción
El LLC5 permite controlar el nivel de líquidos conductivos en sonda
dual en un práctico paquete de conectores octales. Los modelos
están disponibles para operaciones de drenaje o llenado fijos. El
voltaje CC pulsado y aislado en las sondas previene el incremento
electrolítico. Se utiliza menos de 1 mA de corriente para detectar
la presencia de líquidos conductivos entre la sonda principal y la
sonda común. En unidades ajustables, el ajuste de la sensibilidad
elimina las activaciones falsas ocasionadas por agentes de espuma y
residuos flotantes.
Funcionamiento
Drenaje (modo de bomba de flujo descendiente): cuando el nivel
de líquidos aumenta y toca la sonda de nivel alto, el relevador de
salida y los LED se energizan y permanecen energizados hasta que
el nivel de líquido disminuya por debajo de la sonda de nivel bajo.
Llenado (modo de bomba de flujo ascendente: cuando el nivel
de líquidos cae por debajo de la sonda de nivel bajo, el relevador de
salida y los LED se energizan y permanecen energizados hasta que
el nivel de líquido aumente y toque el nivel de la sonda de nivel alto.
El relevador de salida y los LED luego se desenergizan y permanecen
desenergizados hasta que el líquido vuelva a caer debajo del nivel de
la sonda baja.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Lógica de protección de
sonda única
Las sondas están protegidas contra la formación de
sedimentos mediante señales CC pulsadas entre las sondas.
Indicador de estado LED Indicación visual de la activación del relevador en
operaciones de bombeo de flujo ascendente y descendiente.
Contactos
SPDT 5 A aislados Permiten controlar las cargas para voltaje CA
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montable en riel DIN y superficie de 8 pines y
35 mm. Clasificación nominal 10 A a 300 V CA
Montaje de superficie con dos tornillos o anillos de
presión n.º 6 (M 3,5 x 0,6) en riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Abrazaderas de presión PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilizar con conector octal NDS-8. Se
venden por pares.
Nota: El uso de abrazaderas de presión PSC8 se cubre parcialmente los LED
tipo ventana de la unidad LLC5. El uso de base para conectores de alternancia
P1011-6 con sus abrazaderas de presión PSCRB8 correspondientes no cubre los
LED tipo ventana, pero la base del conector no será montable en riel DIN.
Información para pedir
MODELO VOLTAJE
DE LÍNEA DESCRIPCIÓN
LLC52AA 24 V CA Para operaciones de drenaje (bombeo de flujo
descendiente) con resistencia de detección ajustable
LLC52BA 24 V CA Para operaciones de llenado (bombeo de flujo
ascendente) con resistencia de detección ajustable
LLC54AA 120 V CA Para operaciones de drenaje (bombeo de flujo
descendiente) con resistencia de detección ajustable
LLC54AAS 120 V CA
Para operaciones de drenaje (bombeo de flujo
descendiente) con resistencia de detección ajustable
y conexión inversa (n.º 8 bajo, n.º 6 alto)
LLC54AF10 120 V CA Para operaciones de drenaje (bombeo de flujo
descendiente) con resistencia de detección fija de 10 kΩ
LLC54BA 120 V CA Para operaciones de llenado (bombeo de flujo
ascendente) con resistencia de detección ajustable
LLC54BAS 120 V CA
Para operaciones de llenado (bombeo de flujo
ascendente) con resistencia de detección ajustable y
conexión inversa (n.º 8 bajo, n.º 6 alto)
LLC56AA 230 V CA Para operaciones de drenaje (bombeo de flujo
descendiente) con resistencia de detección ajustable
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
L1 N/L2
Tanque metálico o
utilizar sonda adicional
HP = SONDA DE NIVEL ALTO
LP = SONDA DE NIVEL BAJO
C = SONDA COMÚN
V = VOLTAJE
Los contactos del relevador están
aislados.
Conecta la sonda común al tanque
conductivo. Es necesaria una
sonda adicional para tanques
aislados o no conductivos.
SERIE LLC5
8 PINES
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 43.
148 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/LLC5
Accesorios
Electrodo PHST-38QTN
Diseñado para una presión de vapor máxima de
240 PSI; 400 °F. Sin reconocimiento de UL353.
Sonda roscada LLP-24 (24")
Sonda de acero inoxidable roscada cuya longitud es
de 61 cm (24"). Para utilizar con electrodos de control
de nivel de líquidos PHST-38QTN.
Especificaciones
Control
Tipo Detección de resistencia para identificación de nivel
bajo y alto de líquidos conductivos
Voltaje de detección CC pulsada en terminales de sonda
Resistencia de detección Fija desde fábrica o ajustable para 100 KΩ
Resistencia de detección
Tolerancia Ajustable: 1 K ± 500 Ω en límite bajo;
100 KΩ ± 25 %, 0 % en límite alto
Fija desde fábrica: ± 10 % o 500 Ω, lo que sea mayor
Tiempo de respuesta Retardo en el tiempo antioscilaciones <1 s
Entrada
Tolerancia
24 V CA -15 %, +20 %
120 y 230 V CA -20 %, +10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Relevador electromecánico
Forma Aislada, SPDT
Clasificación nominal 5 A resistiva a 240 V CA, 1/10 HP a 240 V CA
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre entrada, salida, y sonda
Mecánica
Montaje Conexión por puerto
Dimensiones H 60,7 mm (2,39"); A 45,2 mm (1,78");
P 76,5 mm (3,01")
Terminación Conector octal de 8 pines
Entorno:
Temperatura de funcionamiento/
Almacenamiento -20 °C a 60 °C/-40 °C a 80 °C
Peso 170 g (6 oz) aproximadamente.
SERIE LLC5
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 149
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/LLC6
SERIE LLC6
Descripción
La serie LLC6 es un control de nivel de líquidos conductivos de una
sola sonda y conector diseñado para proteger contra cortes del nivel de
líquidos bajo. Ofrece un retardo de tiempo fijo desde fábrica de 1 a 60 s
disponible en voltajes de entrada de 24, 120, o 230 V CA. El indicador
LED se ilumina siempre que el relevador de salida SPDT de 10 A del
LLC6 se energiza. Disponible con restablecimiento manual/automático
o un restablecimiento manual especial con función de corte de
alimentación, que restablece la unidad automáticamente al reactivarse
la alimentación, siempre y cuando el nivel de agua sea aceptable. Las
unidades de 24 V CA y 120 V CA son reconocidas como interruptores de
límite por UL353 (las unidades 230 V CA son UL508) y certificación CSA
bajo Norma 14.
Funcionamiento
Restablecimiento automático (restablecer terminales no
conectados): cuando el líquido alcanza el límite de la sonda de nivel
bajo, el relevador de salida y el indicador LED se energizan. Cuando el
líquido cae por debajo del nivel límite de la sonda de nivel bajo, el relevador
de salida y el indicador LED se desenergizan luego de un retardo de
tiempo fijo.
Restablecimiento manual (restablecer interruptor conectado):
cuando el nivel de líquido cae por debajo de la sonda de nivel bajo, el
relevador de salida y el indicador LED se desenergizan luego de un
retardo de tiempo fijo. Cuando el líquido alcanza la sonda de nivel bajo,
el relevador de salida y el indicador LED permanecen desenergizados
hasta que se active el interruptor de restablecimiento manual; luego
ambas unidades se energizarán de inmediato.
Restablecimiento manual por corte de alimentación (interruptor de
restablecimiento conectado): un corte de alimentación ocasiona que
el relevador de salida y el indicador LED se desenergicen. Al restablecer
la alimentación, si el nivel de líquido está por encima de la sonda de
nivel bajo, el relevador de salida y el indicador LED se energizarán de
nuevo. Si el nivel de líquido está por debajo de la sonda de nivel bajo,
el relevador de salida y el indicador LED permanecen desenergizados
hasta que se active el interruptor de restablecimiento normalmente
cerrado (NC).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
12 V CA aislados en sonda Previene la electrolisis
Conexión por conector
octal de 11 pines estándar
industrial
Elimina la necesidad de utilizar conectores especiales
Indicación LED El relevador de salida de indicación visual se energiza
Protección por corte de
alimentación (ver tabla de
pedido para los modelos)
Restablece la unidad automáticamente al reactivarse la
alimentación, siempre y cuando el nivel de agua sea
aceptable
Diagrama de conexiones
Controladores de nivel de líquidos de límite de
nivel bajo
Información para pedir
MODELO VOLTAJE DE
ENTRADA
RETARDO DE
TIEMPO (FIJO)
RESISTENCIA DE
DETECCIÓN RESTABLECER
LLC6210F10M 24 V CA 10 s 10 kΩ Manual/Automático
LLC6410F10M 120 V CA 10 s 10 kΩ Manual/Automático
LLC643F26M 120 V CA 3 s 26 kΩ Manual/Automático
LLC6610F5P 230 V CA 10 s 5 kΩ Restablecimiento manual por
corte de alimentación
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1
N/L2
Tanque metálico o
utilizar sonda adicional
PC = Sonda
común
P = Sonda
V = Voltaje
R = Interruptor de
restablecimiento
NC opcional
Conecta la sonda común
al tanque conductivo.
Es necesaria una sonda
adicional para tanques
aislados o no conductivos.
11 PINES
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 33.
150 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/LLC6
SERIE LLC6
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 11 pines y 35 mm.
Montaje de superficie con dos tornillos o anillos de
presión n.º 6 (M 3,5 x 0,6) en riel DIN de 35 mm.
Utilice abrazaderas de presión PSC11.
Abrazaderas de presión PSC11
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilizar con conector NDS-11. Se venden por
pares.
Electrodo PHST-38QTN
Diseñado para una presión de vapor máxima de
240 PSI; 204 °C (400 °F). Sin reconocimiento de
UL353.
Sonda roscada LLP-24 (24")
Sonda de acero inoxidable roscada cuya longitud es de
61 cm (24"). Para utilizar con electrodos de control de
nivel de líquidos PHST-38QTN.
Especificaciones
Control
Tipo Sensor de resistencia (monofásica) de ENCENDIDO/
APAGADO con retardo de tiempo integrado para
prevenir el ciclo rápido
Voltaje de detección 12 V CA nominal en terminales de sonda
Resistencia de detección Fija de 5 k-250 kΩ
Tolerancia de resistencia
de detección Fija ± 10 %
Retardo de tiempo
Rango 1-60 s en incrementos de 1 s
Tolerancia ± 20 %
Exactitud de repetición ± 10 %
Retardo de tiempo
vs. temperatura y voltaje ± 10 %
Retardo de restablecimiento
de corte de alimentación ≤ 1 s
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia
24 V CA +20 % a -15 %
120 o 230 V CA +10 % a -20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Relevador electromecánico
Forma Sin aislamiento, SPDT
Clasificación nominal 10 A resistiva a 240 V CA; 1/4 HP a 125 V CA;
1/2 HP a 250 V CA
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Voltaje de aislamiento ≥ 2500 V RMS entre terminales de entrada y salida
Mecánica
Montaje Conexión por puerto
Terminación tipo relevador de 11 pines
Dimensiones H 73,9 mm (2,91"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 80 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 207 g (7,3 oz)
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 151
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/LLC8
SERIE LLC8
Descripción
La serie LLC8 es un control económico de nivel de líquidos conductivos
de una sola sonda diseñado para proteger contra cortes del nivel de
líquidos bajo. Ofrece un retardo de tiempo fijo desde fábrica de 1 a 60 s
disponible para voltajes de entrada de 24, 120, o 230 V CA. El indicador
LED se ilumina siempre que el relevador de salida SPDT aislado de
10 A del LLC8 se energiza. La resistencia de detección es fija desde
5 k-250 kΩ. Disponible con restablecimiento manual/automático o un
restablecimiento manual especial con función de corte de alimentación,
que restablece la unidad automáticamente al reactivarse la alimentación,
siempre y cuando el nivel de agua sea aceptable. Las unidades de
24 V CA y 120 V CA son reconocidas como interruptores de límite por
UL353 (las unidades 230 V CA son UL508) y certificación CSA bajo
Norma 14.
Funcionamiento
Restablecimiento automático (interruptor de restablecimiento no
conectado): cuando el líquido alcanza el límite de la sonda de nivel bajo,
el relevador de salida y el indicador LED se energizan. Cuando el líquido
cae por debajo del nivel límite de la sonda de nivel bajo, el relevador de
salida y el indicador LED se desenergizan luego de un retardo de
tiempo fijo.
Restablecimiento manual (restablecer interruptor conectado):
cuando el nivel de líquido cae por debajo de la sonda de nivel bajo, el
relevador de salida y el indicador LED se desenergizan luego de un
retardo de tiempo fijo. Cuando el líquido alcanza la sonda de nivel bajo,
el relevador de salida y el indicador LED permanecen desenergizados
hasta que se active el interruptor de restablecimiento manual; luego se
energizarán de inmediato.
Restablecimiento manual por corte de alimentación (interruptor de
restablecimiento conectado): un corte de alimentación ocasiona que
el relevador de salida y el indicador LED se desenergicen. Al restablecer
la alimentación, si el nivel de líquido toca la sonda de nivel bajo, el
relevador de salida y el indicador LED se energizarán de nuevo. Si el
nivel de líquido está por debajo de la sonda de nivel bajo, el relevador
de salida y el indicador LED permanecen desenergizados hasta que se
active el interruptor de restablecimiento normalmente cerrado NC.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sondas 12 V CA aisladas Previene la acumulación de sarro en la sonda
Diseño de PCB abierto Diseño que permite ahorrar costos para protección del
límite de nivel de líquido bajo de fabricantes originales
Revestimiento PCB
conforme Protege contra la corrosión y la humedad
Indicación LED El relevador de salida de indicación visual se energiza
Protección por corte de
alimentación (ver tabla de
pedido para los modelos)
Restablece la unidad automáticamente al reactivarse la
alimentación, siempre y cuando el nivel de agua sea
aceptable
Los modelos de 24 V CA
y 120 V CA cumplen la
directriz UL353
Requerido para utilizar como un interruptor de límite de
nivel bajo
Diagrama de conexiones
Controladores de nivel de líquidos de límite de
nivel bajo
Información para pedir
MODELO VOLTAJE DE
ENTRADA
RETARDO DE
TIEMPO (FIJO)
RESISTENCIA
DE DETECCIÓN RESTABLECER
LLC825F5M 24 V CA 5 s 5 kΩ Manual/Automático
LLC842F103M 120 V CA 2 s 10 kΩ Manual/Automático
LLC843F10M 120 V CA 3 s 10 kΩ Manual/Automático
LLC843F10P 120 V CA 3 s 10 kΩ
Restablecimiento
manual por corte de
alimentación
LLC843F26M 120 V CA 3 s 26 kΩ Manual/Automático
LLC843F26P 120 V CA 3 s 26 kΩ
Restablecimiento
manual por corte de
alimentación
LLC845F25P 120 V CA 5 s 25 kΩ
Restablecimiento
manual por corte de
alimentación
LLC8430F250P 120 V CA 30 s 250 kΩ
Restablecimiento
manual por corte de
alimentación
LLC8430F26P 120 V CA 30 s 26 kΩ
Restablecimiento
manual por corte de
alimentación
LLC8610F12M 230 V CA 10 s 12 kΩ Manual/Automático
LLC863F26P 230 V CA 3 s 26 kΩ
Restablecimiento
manual por corte de
alimentación
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Tanque metálico o
utilizar sonda adicional
V = Voltaje
LLCO = Sonda de nivel
bajo
G, CP = Sonda de
conexión a
tierra o común
(referencia)
R = Interruptor de
restablecimiento NC
opcional (no incluido)
NO = Normalmente
abierta
NC = Normalmente
cerrada
C = Sonda común o
contacto de
transferencia
Los contactos del relevador están aislados. Conecta la sonda común al tanque conductivo. Es necesaria
una sonda adicional para tanques aislados o no conductivos.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 42.
152 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos
www.littelfuse.com/LLC8
SERIE LLC8
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un barril aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de
pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Electrodo PHST-38QTN
Diseñado para una presión de vapor máxima de
240 PSI; 204 °C (400 °F). Sin reconocimiento de
UL353.
Sonda roscada LLP-24 (24")
Sonda de acero inoxidable roscada cuya longitud es de
61 cm (24"). Para utilizar con electrodos de control de
nivel de líquidos PHST-38QTN.
Especificaciones
Control
Tipo Detección por resistencia para líquidos conductivos
con retardo de tiempo
Voltaje de detección 12 V CA nominal en terminales de sonda
Resistencia de detección Fija de 5 k-250 kΩ
Tolerancia de resistencia
de detección ± 10 %
Retardo de tiempo
Tolerancia ± 20 %
Exactitud de repetición ± 10 %
Retardo de tiempo vs. temperatura
y voltaje ± 10 %
Retardo de restablecimiento de
corte de alimentación ≤1 s
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia
24 V CA -15 % - 20 %
120 V CA o 230 V CA -20 %-10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Relevador electromecánico
Forma Aislada, SPDT
Clasificación nominal 10 A resistiva a 120/240 V CA;
1/4 HP a 125 V CA; 1/2 HP a 250 V CA
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Voltaje de aislamiento ≥ 2500 V RMS entre terminales de entrada y salida
Mecánica
Montaje Distanciadores de nylon de 12,7 mm (0,5 in) x
4,76 mm (0,187 in) de diámetro (3)
Terminación
Dimensiones H 63,5 mm (2,5"); A 55,6 mm (2,19");
P 47,8 mm (1,88")
Eléctrica Terminales de conexión rápida macho de 0,25 in.
(6,35 mm)
Sondas e interruptor de
restablecimiento Terminales de conector macho de 4,75 x 0,76 mm
(0,187 x 0,03 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 80 °C
Revestimiento La placa de circuitos impresa tiene revestimiento
conformante para resistir corrosión y humedad
Humedad 95 % relativa, sin condensación
Peso ≅ 141,7 g (5 oz)
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 153
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos - Relevadores de alternancia Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/alt
Accesorios
Conector octal de 8 pines OT08PC
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 600 V CA.
Montaje en superficie con dos tornillos o anillos de
presión n.º 6 en un riel DIN de 35 mm.
SERIE ALT
Relevador de alternancia de conector de 8 pines
Descripción
Los relevadores de alternancia ALT se utilizan para alternar entre dos
cargas. Los ALT se utilizan comúnmente en aplicaciones de bombeo
dúplex para balancear el tiempo de ejecución de ambas bombas.
Los ALT-S se utilizan en aplicaciones de flotante de nivel alto. Cuando
el interruptor de flote se abre, el relevador de alternancia cambia el
estado, forzando a la otra bomba a ejecutarse la próxima vez que el
flotante se cierre. Todos los relevadores ALT tienen una función de
depuración integrada que previene que el relevador cambie de estado si
el interruptor o contacto flotante rebota momentáneamente.
Los ALT-X tienen un relevador interno interconectado y se utiliza en
aplicaciones de flotante de nivel alto. Estos flotantes se denominan
comúnmente como flotantes variables o de guía.
Las bombas se alternan como en la versión ALT-S pero la configuración
del relevador interconectado permite que ambas bombas operen
simultáneamente cuando tanto el flotante variable como el flotante de
guía están cerrados.
Estos relevadores también están disponibles con un interruptor integrado
(opción SW) que se utiliza para forzar manualmente a una de las bombas
para que opere cada vez que el interruptor flotante se cierra. Esta función
es útil cuando se ha extraído una bomba para fines de reparación o
prueba. En el caso de los relés ALT-X-SW, el interruptor básicamente
obliga a una bomba para que cumpla la función de guía, permitiendo que
la segunda opere cuando ambos flotantes están cerrados.
Para clasificación de UL, debe utilizarse con conector modelo OT08PC
* Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores octales
Serie OT es de 1,356 Nm (12 in-lb).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Retardo de tiempo de
depuración
Previene problemas ocasionadas por ondas o salpicaduras
en el tanque
Interruptor manual/
automático integrado
Obliga a la bomba guía a funcionar cuando una de las
bombas ha sido extraída para fines de reparación o prueba
(en modelos seleccionados)
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
ALT024-S 20-26 V CA o
V CC Para aplicaciones de flotante de nivel alto individual
ALT024-S-SW 20-26 V CA o
V CC
Para aplicaciones de flotante de nivel alto individual
con interruptor manual integrado
ALT115-S 95-125 V CA Para aplicaciones de flotante de nivel alto individual
ALT115-S-SW 95-125 V CA Para aplicaciones de flotante de nivel alto individual
con interruptor manual integrado
ALT115-X 95-125 V CA Para aplicaciones de flotante de nivel alto dual (guía
y variable)
ALT115-X-SW 95-125 V CA Para aplicaciones de flotante de nivel alto dual (guía
y variable) con interruptor manual integrado
ALT230-S 195-250 V CA Para aplicaciones de flotante de nivel alto individual
ALT230-S-SW 195-250 V CA Para aplicaciones de flotante de nivel alto individual
con interruptor manual integrado
ALT230-X 195-250 V CA Para aplicaciones de flotante de nivel alto dual (guía
y variable)
ALT230-X-SW 195-250 V CA Para aplicaciones de flotante de nivel alto dual (guía
y variable) con interruptor manual integrado
VOLTAJE DE ALIMENTACIÓN
MAG. BOBINA
N.º 1
CONTROL DE
ALIMENTACIÓN
MAG. BOBINA N.º 2 ALT INTERRUPTOR
FLOTANTE DE
PRESIÓN U OTRO
CONTACTO AISLADO
DIAGRAMA DE CONEXIONES TÍPICO PARA EL ALT-S
Diagrama de conexiones
BOMBA
N.º 1
BOMBA
N.º 2
CONTACTORES MAGNÉTICO
F3
F1
F2
F4
F5
F6
TAMAÑO DE F3 - F6
PARA APLICACIONES
DE BOMBA ÚNICA
TAMAÑO TÍPICO DE
F1 – F2: 1-2A PARA
BOBINAS DE CONTACTOR
L1
L2
L1
L2
L1
L2
RELEVADOR DE ALTERNANCIA
8 5
1 4 2 3
7 6
S1
S2
DIAGRAMA DE CONEXIONES TÍPICO PARA EL ALT-X (INTERCONECTADO)
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos - Relevadores de alternancia
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
154 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Controladores de bomba y controladores de nivel de líquidos - Relevadores de alternancia
www.littelfuse.com/alt
SERIE ALT
Especificaciones
Características de entrada
Corriente de alimentación 40 mA
Características funcionales
Retardo en el tiempo de depuración 0-5 s
Control de impedancia de entrada (mín.)
24 10 kΩ
115 56 kΩ
230 100 kΩ
Características de salida
Clasificación nominal del contacto
de salida 480 VA a 240 V CA
Características generales
Rango de temperatura -40 °C a 50 °C (-40 °F a 122 °F)
Potencia de entrada máxima 5 W
Marcas de seguridad
UL (conector octal OT08PC
requerido) UL508 (Archivo #E68520)
CSA C22.2 Nro. 14 (Archivo #46510)
Dimensiones (con conector) H 44,45 mm (1,75"); A 60,33 mm (2,375");
P 104,78 mm (4,125")
Peso 172,67 g (6,08 oz; 0,38 lb)
Método de montaje Montaje en riel DIN o en superficie
(conectar en conector OT08PC)
Conector disponible OT08PC (clasificación de UL 600 V)
El conector de 600 V puede estar montado en superficie o instalado en riel DIN.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 155
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos - Relevadores de alternancia Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/altxxx1sw-altxxx3sw
Relevador de alternancia
SERIES ALT-XXX-1-SW/ALT-XXX-3-SW
Diagrama de conexiones
Descripción
Las series ALT-xxx-1-SW/ALT-xxx-3-SW se utilizan para alternar entre
dos cargas y se emplean comúnmente en aplicaciones de bombeo de
flujo ascendente y descendiente dúplex para balancear el tiempo de
ejecución de ambas bombas.
Los relevador ALT tienen un retardo de tiempo de depuración integrado
que previene que el relevador cambie de estado si el flotante se
rebota momentáneamente, y tienen un interruptor integrado para
forzar manualmente una carga específica (bomba) para operar cada
vez que el flotante de entrada se cierre. Esta función es útil al realizar
mantenimientos periódicos o reparaciones en la bomba.
Para una clasificación de UL, se debe utilizar el conector OT08PC para los modelos de 8 pines y el
conector OT11PC para los modelos de 11 pines.
*Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores
octales Serie OT es de 1,356 Nm (12 in-lb).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Retardo de tiempo de
depuración
Previene el ciclo rápido ocasionado por ondas o
salpicaduras en el tanque
Indicadores LED Indicación visual del funcionamiento de carga en
aplicaciones dúplex
Interruptor manual integrado
para forzar el funcionamiento
de carga.
Esta función es útil al realizar mantenimientos periódicos
o reparaciones en la bomba
La serie ALT-xxx-3-SW
ofrece disposición dúplex
Permite el bombeo variable para energizar si la bomba
guía no logra procesar la demanda de corriente
Accesorios
Conector octal de 8 pines OT08PC
Conector octal para unidades de conexión directa.
Montable en riel DIN y superficie de 8 pines.
Clasificación nominal para 10 A a 600 V CA.
Conector Magnal de 11 pines OT11PC
Montable en riel DIN y superficie de 11 pines.
Clasificación nominal para 10 A a 300 V CA.
INTERRUPTOR
DE CONTROL
CONECTOR
POTENCIA
DE ENTRADA
DIAGRAMA DE CONEXIONES TÍPICO PARA EL ALT-XXX-1-SW
POTENCIA DE
ENTRADA
INTERRUPTOR
DE DETENCIÓN
INTERRUPTOR
LAG
INTERRUPTOR
DE CONDUCTOR
DIAGRAMA DE CONEXIONES
TÍPICO PARA EL ALT-XXX-3-SW Información para pedir
MODELO VOLTAJE
DE LÍNEA MONTAJE DESCRIPCIÓN
ALT-100-1-SW 95-120 V CA Magnal de
11 pines
Entrada de flotante individual, dos
relevadores aislados Forma C (DPDT),
2 LED para indicación de carga
ALT-100-3-SW 95-120 V CA Octal de
8 pines
Entradas de flotante triple (flotantes
de guía, variables, y detención),
que actúan como relevadores de
seguridad en flotantes guía/variable,
2 LED para indicación de carga
ALT-200-3-SW 190-240 V CA Octal de
8 pines
Entradas de flotante triple (flotantes
de guía, variables, y detención),
que actúan como relevadores de
seguridad en flotantes guía/variable,
2 LED para indicación de carga
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
156 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Controladores de bomba y controladores de nivel de líquidos - Relevadores de alternancia
www.littelfuse.com/altxxx1sw-altxxx3sw
Especificaciones
Características de entrada
Voltaje de alimentación
ALT-100-1-SW,
ALT-100-3-SW 95-120 V CA
ALT-200-3-SW 190-240 V CA
Frecuencia 50/60 Hz
Características funcionales
Retardo del tiempo antioscilaciones
ALT-100-1-SW, 1 s
ALT-100-3-SW,
ALT-200-3-SW 5 s
Características de salida
Relevador de salida (DPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
Características generales
Rango de temperatura -40 °C a 70 °C (-40 °F a 158 °F)
Potencia de entrada máxima 5 W
SERIES ALT-XXX-1-SW/ALT-XXX-3-SW
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Radiofrecuencia, radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, controles y potencia de
entrada de 3,5 kV
Marcas de seguridad
UL (conector octal OT08PC u
OT11PC requerido) UL508 (Archivo #E68520)
CE IEC 60947-6-2
Dimensiones H 44,45 mm (1,75"); A 60,33 mm (2,375");
P 104,78 mm (4,125") (con conector)
Peso 294,84 g (10,4 oz; 0,65 lb)
Método de montaje Montaje en riel DIN o en superficie (conectar en
conector OT08PC u OT11PC)
Conectores disponibles
Modelo OT08PC Clasificación de UL 600 V
Modelo OT11PCUL Clasificación de UL 300 V
Los conectores pueden estar montados en superficie o instalados en riel DIN.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 157
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos - Relevadores de alternancia Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/arp
Descripción
La serie ARP se utiliza en sistemas donde el tiempo de ejecución es
igual para dos motores. El interruptor de selector permite elegir el
funcionamiento alterno o continuo de cualquier carga. Los LED indican
el estado del relevador de salida. Esta serie versátil puede ser instalada
en la parte frontal (se requiere de accesorio BZ1) o riel DIN de 35 mm
montado con un conector accesorio.
Funcionamiento
Alternancia: cuando el interruptor rotativo está en posición “alternar”,
se activa el funcionamiento alterno de Carga A y Carga B al abrir el
interruptor de control S1. Para finalizar el funcionamiento alterno y
permitir que solo opere la carga seleccionada, gire el interruptor a la
posición “A” para bloquear la Carga A o a posición “B” para bloquear la
Carga B. Los LED indican el estado del relevador interno y qué carga es
seleccionada para operar.
Nota: El voltaje de entrada debe aplicarse en todo momento para lograr
un funcionamiento alterno adecuado. El uso de un interruptor de control
de estado sólido para S1 puede no iniciar la alternancia correctamente. El
voltaje S1 debe generarse desde la misma alimentación que el voltaje de
entrada de la unidad (ver diagramas de conexión). La pérdida de voltaje
de entrada restablece la unidad; la Carga A se convierte en carga guía en
el funcionamiento siguiente.
Disposición dúplex (interconectado): los modelos con disposición
dúplex operan igual que los relevadores de alternancia y cuando tanto
el Interruptor de control (S1) como la Carga variable (S2) se cierran, la
Carga A y la Carga B se energizan simultáneamente.
El DPDT de 8 pines, interconectado, brinda capacidad de carga extra al
sistema mediante el funcionamiento simultáneo de ambos motores,
cuando sea necesario. Los contactos del relevador no están aislados.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Funcionamiento alterna o
eléctricamente bloqueada
Flexibilidad para operar la unidad de alternancia entre dos
cargas como normal o bloqueo del relevador para una
carga específica.
Interruptor de selector de
perfil bajo Previene el accionamiento accidental
Indicación de estado LED Indicación visual sobre qué carga está activada
Conexión base estándar de
la industria Flexibilidad para utilizar en diversas aplicaciones
SERIE ARP
Relevador de alternancia
Diagrama de conexiones
L1 N/L2 L1 N/L2
L1 N/L2
V = VOLTAJE
LA = CARGA A
LB = CARGA B
S1 = INTERRUPTOR DE CONTROL PRIMARIO
S2 = INTERRUPTOR DE CARGA VARIABLE
Los contactos del relevador están aislados.
SPDT DE 8 PINES DPDT DE 11 PINES
DPDT DE 8 PINES INTERCONECTADO
Información para pedir
MODELO VOLTAJE
DE LÍNEA
FORMA DE
SALIDA DESCRIPCIÓN
AR120A-3095 120 V CA SPDT 8 pines para aplicaciones de alternancia. Interruptor rotativo que permite al usuario bloquear el relevador interno en una carga específica.
ARP23S 24 V CA DPDT 8 pines interconectado para aplicaciones de disposición dúplex. Interruptor rotativo que permite al usuario bloquear el relevador interno en una
carga específica.
ARP41 120 V CA SPDT 8 pines para aplicaciones de alternancia.
ARP41S 120 V CA SPDT 8 pines para aplicaciones de alternancia. Interruptor rotativo que permite al usuario bloquear el relevador interno en una carga específica.
ARP42S 120 V CA DPDT 11 pines para aplicaciones de alternancia. Interruptor rotativo que permite al usuario bloquear el relevador interno en una carga específica.
ARP43 120 V CA DPDT 8 pines interconectado para aplicaciones de disposición dúplex.
ARP43S 120 V CA DPDT 8 pines interconectado para aplicaciones de disposición dúplex. Interruptor rotativo que permite al usuario bloquear el relevador interno en una
carga específica.
ARP61S 230 V CA SPDT 8 pines para aplicaciones de alternancia. Interruptor rotativo que permite al usuario bloquear el relevador interno en una carga específica.
ARP62S 230 V CA DPDT 8 pines interconectado para aplicaciones de disposición dúplex. Interruptor rotativo que permite al usuario bloquear el relevador interno en una
carga específica.
ARP63S 230 V CA DPDT 8 pines interconectado para aplicaciones de disposición dúplex. Interruptor rotativo que permite al usuario bloquear el relevador interno en una
carga específica.
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
8 PINES
11 PINES
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 46.
158 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Controladores de bomba y controladores de nivel de líquidos - Relevadores de alternancia
www.littelfuse.com/arp
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 300 V CA
Montaje de superficie con dos tornillos o anillos de
presión n.º 6 (M 3,5 x 0,6) en riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 1 pin y 35 mm.
Clasificación nominal 10 A a 300 V CA Montaje de
superficie con dos tornillos o anillos de presión n.º 6
(M 3,5 x 0,6) en riel DIN de 35 mm. Utilice abrazaderas
de presión PSC11.
Abrazaderas de presión PSC11 o PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilice la Serie PSC8 con conectores octales
NDS-8 o la Serie PSC11 con conectores NDS-11. Se
venden por pares.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
SERIE ARP
Especificaciones
Entrada
Tolerancia
24 V CA -15 % a 20 %
120 y 230 V CA -20 % a 10 %
Frecuencia de línea 50/60 Hz
Salida
Tipo Relevador electromecánico
Forma SPDT, DPDT o DPDT interconectado
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Voltaje máximo 250 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y salida
Mecánica
Montaje Conexión por puerto
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 pines o magnal de 11 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-30 °C a 85 °C
Peso 159 g (5,6 oz) aproximadamente.
NOTA: La unidad no tiene retardo de tiempo antioscilaciones
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 159
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos - Relevadores de alternancia Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/50r400alt
Aplicaciones de 480 V CA, montaje en panel
50R-400-ALT
Diagrama de conexiones
Descripción
Los relevadores de alternancia Serie 50R-400-ALT se utilizan
para alternar entre dos cargas, principalmente en aplicaciones de
compresores y bombeo doble para balancear el tiempo de ejecución de
ambas cargas.
Al utilizarse en aplicaciones de flotante individual, el relevador de
alternancia cambia de estado luego de abrir el interruptor flotante*,
forzando a la otra bomba para que complete el ciclo siguiente hasta
que el flotante se cierre. Al utilizarse en aplicaciones de flotante dual,
el relevador de alternancia permitirá que ambas bombas operen
simultáneamente con los flotantes variables y de guía cerrados.
Una perilla de ajuste brinda la opción de forzar una bomba para que
opere cada vez que el interruptor de flotante se cierra. Esta función es
útil cuando se ha extraído una bomba para fines de reparación o prueba.
La función de antioscilación integrada previene que el relevador
de alternancia cambie de estado si el contacto del flotante rebota
parcialmente.
*El relevador de alternancia no cambiará de estado mientras exista flujo de corriente. El cambio solo ocurrirá
luego de que la corriente haya sido detectada, seguido de una pérdida de corriente por el lapso que dure el
retardo de tiempo antioscilación.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Retardo de tiempo de
depuración
Previene el ciclo rápido ocasionado por ondas o
salpicaduras en el tanque
Indicadores LED Indicación visual del funcionamiento de carga en
aplicaciones dobles
Interruptor manual integrado
para forzar el funcionamiento
de carga.
Esta función es útil al realizar mantenimientos periódicos
o reparaciones en la bomba
Opera desde 380 a 480 V CA No se requiere de transformador para proporcionar
120-240 V al circuito de control
Especificaciones
Características de entrada
Voltaje de alimentación 380-480 V CA
Corriente de alimentación 40 mA
Características funcionales
Control de impedancia de 1 MΩ
entrada (mín.)
Características de salida
Clasificación nominal de contacto de salida
Capacidad experimental 470 VA a 600 V CA
Propósito general 10 A
Retardo en el tiempo de depuración 1 segundo
Características generales
Potencia de entrada máxima 5 W
Terminal
Torque 7 libras por pulgada
Tamaño del cable 12-18 AWG
Marcas de seguridad
UL UL508 (Archivo #E68520)
CE IEC 60947
Dimensiones H 74,4 mm (2,93"); A 133,9 mm (5,27");
P 74,9 mm (2,95")
Peso 444,52 g (15,68 oz; 0,98 lb)
Método de montaje tornillos n.º 8
POTENCIA DE
ENTRADA
ENTRADA DE
CONTROL
BOMBA 1
BOMBA 2
FLOTANTE
PRINCIPAL
FLOTANTE DE
NIVEL ALTO
OPCIONAL
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 6.
160 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos- Relevadores
intrínsecamente seguros Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/iss100
ISS-100
Descripción
Los interruptores ISS-100 tienen certificación UL 913 como dispositivo
asociado para enlace por interfaz entre áreas peligrosas y no peligrosas.
Estas unidades deben ser instaladas en un área no peligrosa.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Terminales para
manipulación segura Cumplen los requisitos de seguridad IEC 61000
Diseño compacto para
montaje en riel DIN o en
superficie
Brinda flexibilidad en la instalación del panel
Indicador de estado LED Indicación visual de la activación del relevador
Relevador de salida aislado Permite conectarse a un PLC o voltaje de control
Especificaciones
Características de entrada
Voltaje de alimentación 90-120 V CA
Características funcionales
Voltaje de detección de sonda 5 V CC continuo
Características de salida
Clasificación nominal de contacto de salida
Capacidad experimental 180 VA a 120 V CA, C300
Propósito general 8 A a 120 V CA
Duración del contacto del relevador
(eléctrico) 100 000 ciclos, mínimo a carga nominal
Duración del contacto del relevador
(mecánico) 10 000 000 de ciclos
Características generales
Rango de temperatura -20 °C a 55 °C (-4 °F a 131 °F)
Potencia de entrada máxima 1.5 W
Rango de conexiones 12-20 AWG
Torque de terminal 0,4 a 0,5 Nm máximo (3,5 a 4,5 in-lb máx.)
Proporciona circuitos intrínsecamente
seguros en las
ubicaciones siguientes: División 1 y 2
Clase I, Grupos A, B, C, D;
Clase II, Grupos E, F, G;
y Clase III
Parámetros de la entidad Voc = 16,8 V Po=Voc*Isc
Isc = 1,2 mA 4
La = 100 mH
Ca= 0,39 uF
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencias (RFI) IEC 61000-4-3, Nivel 3, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada de 4 kV
Marca de seguridad
UL UL913 Sexta Edición (Archivo #E233355)
Dimensiones H 88,9 mm (3,5"); A 52,93 mm (2,08");
P 59,69 mm (2,35")
Peso 226,8 g (8 oz; 0,5 lb)
Método de montaje Riel DIN de 35 mm o montaje en superficie
(tornillos n.º 6 o n.º 8)
Interruptor intrínsecamente seguro
de un solo canal
Diagrama de conexiones
ISS-100
SALIDA ENERGIZADA
CARGA
Ver notas 1 y 2
Ver nota 3
ENTRADA
115 V CA
1. Distancia máxima entre la unidad y el contacto del
interruptor: 3000 m (10 000 ft).
2. Todas las conexiones seguras, según la aplicación, deben
estar separadas de las conexiones intrínsecamente
seguras. La descripción de los métodos de conexión
especiales se encuentra disponible en el Código
Nacional Eléctrico ANSI/NFPA 70, Artículo 504, Sistemas
intrínsecamente seguros. Verifique los códigos locales y
estatales para conocer los requisitos adicionales.
3. Todos los contactos de interruptor no deben contener
energía, ni capacitancia o inductancia.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 10.
©2018 Controladores y Relevadores de Protección de Littelfuse 161
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos - Relevadores
intrínsecamente seguros Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/iss101
ISS-101
Descripción
Los interruptores ISS-101 tienen certificación UL 913 como dispositivo
asociado para enlace por interfaz entre áreas peligrosas y no peligrosas.
Estas unidades deben ser instaladas en un área no peligrosa.
Para clasificación de UL, debe utilizarse con conector modelo OT08PC.
Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores
octales Serie OT es de 1,356 Nm (12 in-lb).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto para
montaje en riel DIN o en
superficie mediante base
octal
Brinda flexibilidad en la instalación de panel
Indicador de estado LED Indicación visual de la activación del relevador
Relevador de salida aislado Permite conectarse a un PLC o voltaje de control
Conector de 8 pines estándar Reemplazo de seguridad para piezas de otros fabricantes
Accesorios (incluido)
Conector Octal de 8 pines OT08PC
Conector octal para unidades de conexión directa.
Montable en riel DIN y superficie de 8 pines.
Clasificación nominal para 10 A a 600 V CA.
Especificaciones
Características de entrada
Voltaje de alimentación 90-120 V CA
Características funcionales
Voltaje de detección de sonda 5 V CC continuo
Características de salida
Clasificación nominal
de contacto de salida
Capacidad experimental 180 VA a 120 V CA, C300
Propósito general 8 A a 120 V CA
Duración del contacto
del relevador (eléctrico) 100 000 ciclos, mínimo a carga nominal
Duración del contacto
del relevador (mecánico) 10 000 000 de ciclos
Características generales
Rango de temperatura -20 °C a 55 °C (-4 °F a 131 °F)
Potencia de entrada máxima 1.5 W
Rango de conexiones 12-20 AWG
Torque de terminal 0,4 a 0,5 Nm máximo (3,5 a 4,5 in-lb máx.)
Proporciona circuitos
intrínsecamente seguros
en las ubicaciones siguientes: División 1 y 2
Clase I, Grupos A, B, C,D;
Clase II, Grupos E, F, G;
y Clase III
Parámetros de la entidad Voc = 16,8 V Po=Voc*Isc
I
sc = 1,2 mA 4
La = 100 mH
Ca= 0,39 uF
Interruptor intrínsecamente seguro de un
solo canal
Diagrama de conexiones
Ver notas 1 y 2
Ver nota 3
CARGA
ENTRADA
115 V CA
DIAGRAMAS DE CONTROL ISS-101
NOTAS:
1. Distancia máxima entre la unidad y el contacto del
interruptor: 3000 m (10 000 ft).
2. Todas las conexiones seguras, según la aplicación,
deben estar separadas de las conexiones
intrínsecamente seguras. La descripción de los métodos
de conexión especiales se encuentra disponible en el
Código Nacional Eléctrico ANSI/NFPA 70, Artículo 504,
Sistemas intrínsecamente seguros. Verifique los
códigos locales y estatales para conocer los requisitos
adicionales.
3. Todos los contactos de interruptor no deben contener
energía, ni capacitancia o inductancia.
Consulte el Manual de instalación para obtener
instrucciones e información sobre ubicaciones
peligrosas.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
162 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos- Relevadores
intrínsecamente seguros Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/iss101
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Radiofrecuencia
Inmunidad a
radiofrecuencias (RFI) IEC 61000-4-3, Nivel 3, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada de 4 kV
Marca de seguridad
UL UL913 Sexta Edición (Archivo #E233355)
Dimensiones H 44,45 mm (1,75"); A 60,33 mm (2,375");
P 104,78 mm (4,125")
Peso 226,8 g (8 oz; 0,5 lb)
Método de montaje Montaje en riel DIN o en superficie
(conectar en conector OT08PC)
ISS-101
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 163
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos - Relevadores
intrínsecamente seguros Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/iss102
Interruptor intrínsecamente seguro de dos canales
SERIE ISS-102
Descripción
El ISS-102 es un interruptor intrínsecamente seguro de dos canales
diseñado para múltiples usos que incluye controladores de bombeo
de flujo variable (bloqueo) o interruptores de dos canales. Los LED
indican el estado de los relevadores de entrada y salida intrínsecamente
seguros y opciones seleccionables por el usuario que incluyen un límite
de resistencia variable para entradas flotantes. La carcasa ISS-102 es
montaje en riel DIN o en superficie.
-LC Cada canal de entrada se activa al cerrar el interruptor
correspondiente. Al activar una entrada variable (CH2), la salida se
cierra. Cuando se aplica la lógica de bloqueo, el contacto de salida
permanece cerrado hasta que las entradas guía (CH1) y (CH2) sean
desactivadas. La sensibilidad es fija a 100 kΩ con un retardo de tiempo
antioscilación de 2 s.
-DCS Este interruptor de doble canal tiene dos relevadores de salida
de Forma A. Dos LED iluminan el estado de salida de su relevador de
Forma A correspondiente. Las sondas de resistencia o interruptores
pueden utilizarse en sus entradas respectivas. La sensibilidad es fija a
100 kΩ con un retardo de tiempo antioscilación de 0,5 s.
-MC Al seleccionar la funcionalidad adecuada mediante los
interruptores DIP, se puede definir el bombeo de flujo variable o
individual, o el interruptor sin bloqueo de doble canal. El ajuste de
sensibilidad (4,7 K-100 kΩ) permite al usuario definir la impedancia
de entrada en la cual los relevadores de salida (uno en Forma de A y
otro en Forma de C) cambiarán de estado, con un retardo de tiempo
antioscilación de 0,5 o 2 s.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Terminales para
manipulación segura Cumplen los requisitos de seguridad IEC 61000
Diseño compacto para
montaje en riel DIN o en
superficie
Brinda flexibilidad en la instalación del panel
Indicador de estado LED Indicación visual de la activación del relevador
Dos canales de entrada Flexibilidad para aplicaciones de conector de dos canales
o controlador de bloqueo para bombeo de flujo variable
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
ISS-102A-LC 120 V CA Controlador de bloqueo
ISS-102AA-DCS 120 V CA Interruptor de doble canal
ISS-102ACI-MC 120 V CA Controlador multifunción
ISS-102C-M-LC 120 V CA MSHA* evaluado
ISS-102CCI-M-MC 120 V CA MSHA* evaluado
* Administración de salud y seguridad en minería
ISS-102A
Ver
notas
1 y 2
Ver nota 3
CARGA
CH1 Com CH2
1 2 3
4 5 7 6
120 V CA
ISS-102AA
FORMA A
FORMA A
CH1 Com CH2
1 2
1 9 2 3
4 5 7 6
CARGA CARGA
120 V CA
Ver
notas
1 y 2
Ver nota 3
Para obtener diagramas de conexiones y notas, refiérase a la página siguiente.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 10.
164 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos- Relevadores
intrínsecamente seguros Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/iss102
Especificaciones
Características funcionales
Tiempo de antioscilaciones 0,5 o 2 s
Voltaje de detección por sonda 5 V CC pulsado
Características de salida
Clasificación nominal
de contacto de salida
Capacidad experimental 180 VA a 120 V CA, C150
Propósito general 5 A a 120 V CA
Duración del contacto del
relevador (eléctrico) 100 000 ciclos, mínimo a carga nominal
Duración del contacto del
relevador (mecánico) 10 000 000 de ciclos
Tipo de relevador de salida
ISS-102A-LC Uno Forma A
ISS-102AA-DCS Dos Forma A
ISS-102ACI-MC Uno Forma A y otro aislado Forma C
ISS-102C-M-LC Uno Forma C
ISS-102CCI-M-MC Dos Forma C (uno aislado)
Características generales
Rango de temperatura -20 °C a 55 °C (-4 °F a 131 °F)
Potencia de entrada máxima 2 W
Rango de conexiones 12-20 AWG
Torque de terminal 0,4 a 0,5 Nm máximo (3,5 a 4,5 in-lb máx.)
Proporciona circuitos
intrínsecamente seguros
en las ubicaciones siguientes: División 1 y 2
Clase I, Grupos A, B, C, D;
Clase II, Grupos E, F, G;
Clase III
Parámetros de la entidad Voc = 16,8 V Po=Voc*Isc
Isc = 1,2 mA 4
La = 100 mH
Ca = 0,39 uF
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencias (RFI) IEC 61000-4-3, Nivel 3, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada de 4 kV
Marca de seguridad
UL UL913 Sexta Edición (Archivo #E233355)
(excepto modelos ISS-102C-M-LC y
ISS-102CCI-M-MC que han sido evaluados
por MSHA)
Dimensiones H 88,9 mm (3,5"); A 52,93 mm (2,08");
P 59,69 mm (2,35")
Peso 317,51 g (11,2 oz; 0,7 lb)
Método de montaje Riel DIN de 35 mm o montaje en superficie
(tornillos n.º 6 o n.º 8)
SERIE ISS-102
ISS-102ACI
Ver
notas
1 y 2
Ver nota 3
FORMA A
FORMA C
CH1 Com CH2
120 V 120 V CA
CA MÁX.
CARGA
1
CARGA
2
CARGA
3
1 2 3
4 5 7 6
10 11 12
ISS-102C-M
1
2
1 8 2 3
4 5 7 6
120 V CA
CARGA
CARGA
FORMA C
Ver
notas
1 y 2
Ver nota 3
ISS-102CCI-M
CARGA
1
CARGA
2
FORMA C
FORMA C
120 V CA
10 11 12
1 8 2 3
4 5 7 6
120 V CA MÁX.
CARGA
3
CARGA
4
Ver
notas
1 y 2
Ver nota 3
Diagramas de conexiones (continuación)
NOTAS:
1. Distancia máxima entre la unidad y el contacto del
interruptor: 3000 m (10 000 ft).
2. Todas las conexiones seguras, según la aplicación, deben
estar separadas de las conexiones intrínsecamente
seguras. La descripción de los métodos de conexión
especiales se encuentra disponible en el Código
Nacional Eléctrico ANSI/NFPA 70, Artículo 504, Sistemas
intrínsecamente seguros. Verifique los códigos locales y
estatales para conocer los requisitos adicionales.
3. Todos los contactos de interruptor no deben contener
energía, ni capacitancia o inductancia.
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 165
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos - Relevadores
intrínsecamente seguros Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/iss105
Interruptor intrínsecamente seguro de cinco
canales
SERIE ISS-105
Descripción
El ISS-105 es un relevador intrínsecamente seguro de cinco canales
“inteligente” y un controlador de bomba. El ISS-105 puede ser
configurado para aplicaciones de bombeo de flujo variable o como
relevador de cinco canales para una amplia variedad de aplicaciones.
El ISS-105 tiene una extensa lista de características que son necesarias
en diversas aplicaciones de bombeo y pueden indicar alarmas altas,
bajas y fuera de secuencia. Si llegase a ocurrir una alarma por fuera de
secuencia, las bombas faltantes se iniciarán según el ciclo establecido.
El Modelo ISS-105 puede configurarse para control no alterno, control
alterno y control alterno con una bomba sin alternancia. La bomba
sin alternancia está diseñada para utilizarse con una bomba auxiliar o
de emergencia. El ISS-105 puede activar una bomba de emergencia
una vez cada 50 ciclos para mantenerla funcionando libremente.
Mediante los interruptores DIP integrados, las bombas individuales
pueden desactivarse en el momento de hacerles reparaciones o
mantenimiento.
Características y beneficios
J 5 canales de entrada intrínsecamente seguros que cumplen la UL913
Sexta Edición
J 4 relevadores de salida normalmente abiertos y 1 relevador de salida
SPDT
J Opciones de control de bombeo seleccionables por campo
J Monitorea la secuenciación flotante y envía señales de alarma toda
vez que ocurra una condición fuera de secuencia
J Opciones de alarma baja o alta según el número de bombas y
configuraciones
J Contactos de salida para alarmas audibles
J Cumple los estándares IEC EMC para Rápidos transitorios eléctricos
(EFT), Descarga Electrostática (ESD) e Inmunidad a Radiofrecuencia
(RFI)
J El montable en superficie o riel DIN brinda flexibilidad en la
instalación del panel
J Opción con alternador o sin alternador seleccionable por el usuario
J Opción de bombeo no alterno para aplicaciones auxiliares o de
emergencia
J Los interruptores de desactivación de bomba facilitan la
desactivación de bombas individuales para reparación o servicio
J Retardo de bomba variable ajustable para todos los modos de
bombeo
J Temporizador de bloqueo/retardo ajustable en modo de relevador de
cinco canales
J Terminales de manipulación segura que cumplen los requisitos de
seguridad IEC 61000
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
ISS-105 120 V CA Controlador de bomba intrínsecamente
seguro
ISS-105-ISO 120 V CA Solo intrínsecamente seguro
ISS-105-ISO-3 120 V CA Solo intrínsecamente seguro de 3 canales
ISS-105-ISO-4 120 V CA Solo intrínsecamente seguro de 4 canales
ISS-105-ISO-F 120 V CA ISO con relevadores de activación rápida
#1 #2 #3 #4 #5 C
MODEL ISS-105
INTRINSICALLY
SAFE INPUTS
#1
PUMP
#1
PUMP
#2
LOW
ALARM
HIGH
ALARM
LOW
ALARM
HIGH OFF LEAD LAG1 ALARM COMMON
AUDIBLE
ALARM
MODE 1
DUPLEXER
PUMP DOWN
#2 #3 #4 #5 INPUT
120 VAC
IS Super Cell
Flotante de alarma baja
Flotante de detención
Flotante conductor
Flotante de LAG 1
Flotante de alarma alta
120 V CA
Bomba
1 Bomba
2
Alarma
audible
Alarma
alta
BOMBA
Typical Application:
Duplex Pump Down with High and Low Alarms.
Muchas otras configuraciones son posibles.
Consulte el manual del usuario para obtener
más información.
Alarma
baja
APLICACIÓN TÍPICA:
Bombeo dúplex descendiente con alarmas de nivel bajo y alto
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
Para conocer el plano de dimensiones, consulte: Apéndice, página 511, Figura 12.
166 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Controladores de bomba y controladores de nivel de líquidos- Relevadores
intrínsecamente seguros Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/iss105
Especificaciones
Características de entrada
Voltaje de alimentación 120 V CA
Frecuencia 50*/60 Hz
Características funcionales
Voltaje de detección de sonda 5 V CC continuo
Características de salida
Clasificación nominal de salida
de relevador
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 7 A a 240 V CA
Duración del contacto del
relevador (eléctrico) 100 000 ciclos, mínimo a carga nominal
Duración del contacto del
relevador (mecánico) 10 000 000 de ciclos
Características generales
Rango de temperatura -40 °C a 55 °C (-40 °F a 131 °F)
Potencia de entrada máxima 5 W
Rango de conexiones 12-20 AWG
Torque de terminal 0,4 a 0,5 Nm (3,5 a 4,5 in-lb máx.)
Proporciona circuitos
intrínsecamente seguros
en las ubicaciones siguientes: División 1 y 2
Clase I, Grupos A, B, C, D;
Clase II, Grupos E, F, G;
y Clase III
Parámetros de la entidad Voc = 16,8 V Po=Voc*Isc
Isc = 1,2 mA 4
La = 100 mH
Ca = 0,39 uF
ISS-105
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencias (RFI) IEC 61000-4-3, Nivel 3, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada de 4 kV
salidas/entradas de 2 kV
Marcas de seguridad
UL UL913 Sexta Edición (Archivo #E233355)
Dimensiones H 59,69 mm (2,35"); A 94,06 mm (3,703");
P 27,64 mm (5,025")
Peso 544,31 g (19,2 oz; 1,2 lb)
Método de montaje Riel DIN de 35 mm o montaje en superficie
(tornillos n.º 6 o n.º 8)
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
CONTROLADORES DE BOMBA Y CONTROLADORES DE NIVEL DE LÍQUIDOS
8
©2018 Controladores y Relevadores de Protección de Littelfuse 167 www.littelfuse.com/relayscontrols
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas
Para obtener más información…
acerca de las fallas comunes y cómo
solucionarlas, visite
Littelfuse.com/MotorProtection
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
Los monitores de corriente brindan protección contra fallas en la línea de alimentación y carga externa cuando el motor está en funcionamiento. Protegen contra problemas de
desbalance de corriente y línea monofásica que pueden ser generados por fallas de alimentación, contactos defectuosos, conexiones erróneas, cables defectuosos, o motores
dañados. Además brindan protección confiable contra sobrecargas y cargas insuficientes.
Los monitores de voltaje de Littelfuse se basan en microprocesadores y vienen calibrados desde fábrica para mediciones de voltaje altamente precisas y exactas brindando alta
sensibilidad y al mismo tiempo reduce las interrupciones no deseadas. Esta funcionamiento precisa puede detectar condiciones monofásicas o desbalance de voltaje incluso cuando
hay voltajes regenerados.
Transductores y relevadores de monitoreo de corriente
Serie CP5 Monitor de corriente monofásico........................168
LSR-0 Sensor de carga, relevador de bajo costo ..........169
Serie LSR-XXX Sensores de carga...............................................170
Serie LSRU Sensores de carga...............................................171
Series LSRX/LSRX-C Sensores de carga, relevadores de bajo costo ...173
Serie ECS Sensores de corriente ........................................175
Serie ECSW Sensores de corriente ........................................178
Serie TCS Sensores de corriente ........................................181
Serie TCSA Transductores de corriente .................................183
Serie DCSA Transductores de corriente .................................185
Serie LCS10T12/LPM Indicadores de corriente .....................................187
Relevadores de monitoreo de voltaje
Serie 50R...........................................................................................................188
Serie 201-XXX-SP..............................................................................................190
Serie 201-XXX-SP-DPDT ...................................................................................192
Serie 202-200-SP ..............................................................................................194
Serie 460-XXX-SP..............................................................................................196
Serie 102A.........................................................................................................198
Serie 201A.........................................................................................................200
Serie 201A-AU ..................................................................................................202
Serie 201-XXX-DPDT.........................................................................................204
Serie 202...........................................................................................................206
Serie 250A.........................................................................................................208
Serie 350...........................................................................................................210
Serie 355...........................................................................................................212
Serie 455...........................................................................................................214
Serie 460...........................................................................................................216
Serie 601...........................................................................................................218
601-CS-D-P1......................................................................................................220
Serie WVM........................................................................................................222
Serie DLMU.......................................................................................................224
Serie HLMU.......................................................................................................227
PLMU11.............................................................................................................229
Serie PLM..........................................................................................................231
Serie TVW.........................................................................................................233
Serie TVM .........................................................................................................235
Serie PLR...........................................................................................................237
Serie PLS...........................................................................................................239
HLVA6I23...........................................................................................................241
Serie KVM ........................................................................................................243
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
168 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/cp5
Monitor de corriente monofásico
Diagrama de conexiones
Descripción
La serie CP5 son monitores de corriente insuficiente diseñados para
monitorear un sistema trifásico o de guía. Se utiliza comúnmente como
monitor de torre en sistemas de irrigación por pivote centralizado para
detectar torres trabadas o con baja velocidad de corriente en riegos.
La serie CP5 tiene tanto un nivel de activación ajustable como un
temporizador de retardo de disparo. Al detectar la corriente, la serie
CP5 activa su relevador de salida, activando el motor o bomba. Cuando
la corriente en la línea de alimentación monitoreada cae por debajo
del punto de activación definido por el usuario, la unidad pasa por un
temporizador de retardo de disparo y luego desactiva el relevador de
salida siempre y cuando la corriente monitoreada no se restablezca.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Nivel de activación
ajustable (0-5 A)
Proporciona la capacidad de definir con precisión el punto
de activación de corriente para cualquier aplicación
Retardo de activación
ajustable (0-10 m)
Previene interrupciones no deseadas debido a
fluctuaciones en la línea de alimentación
Contactos de relevador de
600 V disponible en el
modelo CP5-460
Elimina la necesidad de un transformador de control para
variar el voltaje de 120-240 V para un circuito de control
Especificaciones
Características de entrada
Voltaje de entrada nominal
CP5115 115 V CA
CP5460 460 V CA
Frecuencia 50*/60 Hz
Características funcionales
Puntos de funcionamiento
Nivel de activación 0-5 amperios
Retardo de activación 0-10 minutos
Restablecimiento 1 segundo
Características de salida
Clasificación nominal de contacto de salida (SPDT)
Capacidad experimental
CP5115 480 VA a 240 V CA
CP5460 470 VA a 600 V CA
Características generales
Terminal
Torque 7 libras por pulgada
Tamaño del cable 12-18 AWG
Marcas de seguridad
UL UL508 (Archivo #E68520)
Dimensiones H 74,4 mm (2,93"); A 133,9 mm (5,27");
P 74,9 mm (2,95")
Peso 453,59 g (16 oz; 1 lb)
Método de montaje tornillos n.º 8
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
PANEL DE
PIVOTE
CENTRALIZADO
BOBINA
DETENER
MANUAL
APAGAR
AUTOMÁTICO
INICIAR
ALIMENTACIÓN
DEL CONTROL
DE LA BOMBA
Información para pedir
MODELO VOLTAJE DE LÍNEA
CP5115 115 V CA
CP5460 460 V CA
SERIE CP5
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 6.
©2018 Controladores y Relevadores de Protección de Littelfuse 169
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/lsr0
Descripción
El LSR-0 es un sensor de carga automático diseñado para utilizarse como
relevador de prueba. Se utiliza para verificar que la corriente esté fluyendo
según lo establecido. Tiene una corriente de pulsación garantizada de
15 A y corriente de desconexión de 2,5 A. Los relevadores de prueba
se utilizan generalmente para interbloquear ventiladores, compresores,
motores, unidades de calefacción y otros dispositivos. El LSR-0 es
automático, es decir, genera su potencia a partir de las conexiones en
monitoreo para que no requiera de conexiones de control de alimentación
separadas.
Características
g Automático
g Relevador de prueba de bajo costo
g Puede monitorear cargas hasta de 135 A
Especificaciones
Clasificaciones de corriente
máxima 135 A continua
Características funcionales
Límite de encendido Fijo, 15 A (máx.)*
Límite de apagado 2,5 A (mín.)
Alimentación inducida desde el conductor
Aislamiento 600 V CA rms
Características de salida
Clasificación nominal de
salida de relevador:
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A
Características generales
Rango de temperatura -20 °C a 70 °C (-4 °F a 158 °F)
Tamaño del cable 12-24 AWG
Tamaño del orificio 18,4 mm (0,725") de diámetro
Torque del terminal 0,8 Nm (7 in-lb).
Marcas de seguridad
CSA, CSA-NRTL/C (Archivo #46510)
CE
Dimensiones H 42,42 mm (1,67"); A 58,42 mm (2,3");
P 90,43 mm (3,56")
Peso 158,76 g (5,6 oz; 0,35 lb)
Método de montaje Cuatro tornillos n.º 6 de 3/4" de largo
*Los conductores pueden estar conectados en bucle para aplicaciones de motores más pequeños.
Precaución: No utilice este producto como medida de seguridad única para aplicaciones de protección.
Sensor de carga automático/Relevador de prueba
de bajo costo
LSR-0
Diagrama de conexiones
VOLTAJE
TRIFÁSICO
VOLTAJE DE
CONTROL
VOLTAJE DE
CONTROL
VOLTAJE
TRIFÁSICO
CONTACTOR
MAGNÉTICO
CONTACTOR
MAGNÉTICO
CONTACTOR
MAGNÉTICO 2
CONTACTOR
MAGNÉTICO 2
CONTACTOR
MAGNÉTICO
VOLTAJE
TRIFÁSICO
MOTOR DE BANDA
TRANSPORTADORA
MOTOR DE BANDA
TRANSPORTADORA
MOTOR DE BANDA
TRANSPORTADORA
MOTOR DE BANDA
TRANSPORTADORA VOLTAJE
TRIFÁSICO
MANUAL DETENER
APAGAR
AUTOMÁTICO
INICIAR
CONTROLES
DE PRESIÓN
DE ACEITE
ENTRADA
LÓGICA
PLC U OTRO SISTEMA DE
CONTROL AUTOMATIZADO
DIAGRAMA DE CONEXIONES TÍPICO PARA REFRIGERACIÓN O
CONTROL DE FALLAS POR ACEITE
DIAGRAMA DE CONEXIONES TÍPICO PARA ESTRUCTURA DE AUTOMATIZACIÓN
DIAGRAMA DE CONEXIONES TÍPICO PARA ESTRUCTURA DE AUTOMATIZACIÓN
VOLTAJE
TRIFÁSICO
VOLTAJE DE
CONTROL
VOLTAJE DE
CONTROL
VOLTAJE
TRIFÁSICO
CONTACTOR
MAGNÉTICO
CONTACTOR
MAGNÉTICO
CONTACTOR
MAGNÉTICO 2
ONTACTOR
AGNÉTICO 2
CONTACTOR
MAGNÉTICO
VOLTAJE
TRIFÁSICO
MOTOR DE BANDA
TRANSPORTADORA
MOTOR DE BANDA
TRANSPORTADORA
MOTOR DE BANDA
TRANSPORTADORA
MOTOR DE BANDA
TRANSPORTADORA VOLTAJE
TRIFÁSICO
MANUAL DETENER
APAGAR
AUTOMÁTICO
INICIAR
CONTROLES
DE PRESIÓN
DE ACEITE
ENTRADA
LÓGICA
PLC U OTRO SISTEMA DE
CONTROL AUTOMATIZADO
VOLTAJE
TRIFÁSICO
VOLTAJE DE
CONTROL
VOLTAJE DE
CONTROL
VOLTAJE
TRIFÁSICO
CONTACTOR
MAGNÉTICO
CONTACTOR
MAGNÉTICO
CONTACTOR
MAGNÉTICO 2
TOR
CO 2
CONTACTOR
MAGNÉTICO
VOLTAJE
TRIFÁSICO
MOTOR DE BANDA
TRANSPORTADORA
MOTOR DE BANDA
TRANSPORTADORA
MOTOR DE BANDA
TRANSPORTADORA
MOTOR DE BANDA
TRANSPORTADORA VOLTAJE
TRIFÁSICO
MANUAL DETENER
APAGAR
AUTOMÁTICO
INICIAR
CONTROLES
DE PRESIÓN
DE ACEITE
ENTRADA
LÓGICA
PLC U OTRO SISTEMA DE
CONTROL AUTOMATIZADO
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 511, Figura 14.
170 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/lsrxxx
VOLTAJE DE
CONTROL
VOLTAJE DE
CONTROL
VOLTAJE
TRIFÁSICO
VOLTAJE
TRIFÁSICO
CONTACTOR
MAGNÉTICO
CONTACTOR
MAGNÉTICO
DETENER
MOTOR
MOTOR
INICIAR
DETENER INICIAR
SERIE LSR-XXX
Sensor de carga
Descripción
Los sensores de carga serie LSR-xxx utilizan niveles de corriente
para determinar índices de alimentación, desgaste de herramientas,
pérdida de suministro en bombas, viscosidad de mezcladores y todo
tipo de condiciones de sobrecarga y carga insuficiente. Además, se
pueden utilizar para monitorear motores de bomba, enfriadores y otra
maquinaria. Estos dispositivos combinan un transformador de corriente
(CT) con contactos de relevador Forma C (SPDT) para conmutar circuitos
de alarma, contactos o cargas inductivas o resistivas. Un ajuste simple
con destornillador calibrará el sensor para aplicaciones monofásicas o
trifásicas hasta de 100 HP.
Características
g Puede monitorear corriente de motores hasta de 100 Hp
g Ajuste detallado con base para 20 ciclos
g LED de estado
Especificaciones
Características funcionales
Aislamiento 600 V CA rms
Rango de ajuste de corriente
(Típico) 2-100 A
Rango de ajuste de corriente
(Mín.-Máx.) 0,5-135 A
Punto de ajuste de activación Ajustable en rango de ± 1 %
Características de entrada
Control de alimentación:
LSR-24 24 V CA
LSR-115 115 V CA
LSR-230 230 V CA
Clasificaciones nominales
de corriente máxima 135 A máx. continua
Características de salida
Clasificación nominal de
contacto de salida (SPDT):
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A
Características generales
Rango de temperatura -20 °C a 70 °C (-4 °F a 158 °F)
Tamaño del cable 12-24 AWG
Tamaño del orificio 18,4 mm (0,725") de diámetro
Torque del terminal 0,8 Nm (7 in-lb).
Marcas de seguridad
CSA, CSA-NRTL/C (Archivo #46510)
CE IEC 60947
Dimensiones H 42,42 mm (1,67"); A 58,42 mm (2,3");
P 90,43 mm (3,56")
Peso 181,44 g (6,4 oz; 0,4 lb)
Método de montaje Cuatro tornillos n.º 6 de 3/4" de largo
Precaución: No utilice este producto como medida de seguridad única para aplicaciones de protección.
Diagrama de conexiones
DIAGRAMA DE CONEXIONES TÍPICO PARA DETECCIÓN DE PÉRDIDA DE CARGA
DIAGRAMA DE CONEXIONES TÍPICO PARA DETECCIÓN DE SOBRECARGA
Información para pedir
MODELO VOLTAJE DE LÍNEA
LSR-24 24 V CA
LSR-115 115 V CA
LSR-230 230 V CA
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 511, Figura 14.
©2018 Controladores y Relevadores de Protección de Littelfuse 171
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/lsru
SERIE LSRU
Sensor de carga
Descripción
La serie LSRU es una familia de sensores de carga basados en
microprocesador. La familia de productos LSRU emplea tres tipos de
lógica de control básicos: lógica de control para motores, lógica de
alarma, y lógica de control de alimentador.
Lógica de control para motores
Diversas combinaciones de funciones disponibles en la serie LSRU, que
incluye sobrecorriente y corriente insuficiente, o bien, sobrecorriente
y corriente insuficiente con desactivación variable, configuraciones de
retardo de restablecimiento extendido, o restablecimiento individual.
Estas diversas funciones del LSRU se activan conforme a las fallas
respectivas y luego se restablecen automáticamente después de
cumplirse el retardo de restablecimiento, previo a la siguiente puesta en
marcha del motor. Los LSRU no se activan por corriente insuficiente al
desactivar la carga, y este fenómeno es una condición normal.
Lógica de alarma
El LSRU-AL simplemente indica si la corriente está entre los puntos de
ajuste o fuera de éstos. Este equipo se adapta mejor con un PLC u otro
controlador donde se busca obtener indicaciones de estado.
Control de alimentador
El LSRU-FC es un monitor de carga diseñado para controlar mecanismos
de alimentación en diversas aplicaciones. Detiene el alimentador cuando
la amoladora, trituradora, sierra eléctrica, barrena, etc. se aproxima a la
sobrecarga. Cuando la carga es reducida a un nivel predeterminado, el
alimentador se reinicia.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Indicador LED Indicación visual sobre el estado del relevador
Sensor de corriente
integrado
Elimina la necesidad de un transformador de corriente
independiente y además proporciona aislamiento entre los
circuitos de control y los sistemas monitoreados
Rango de detección de
corriente ajustable
Proporciona la capacidad de definir con precisión el punto
de activación de corriente para cualquier aplicación
Diagrama de conexiones
VOLTAJE DE
CONTROL
VOLTAJE
TRIFÁSICO
DETENER INICIAR
CONTACTOR
MAGNÉTICO
Información para pedir
Ver página siguiente.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 511, Figura 14.
172 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/lsru
SERIE LSRU
Especificaciones
Características funcionales
Aislamiento 600 V CA rms
Potencia eléctrica 2 W
Tiempo de aceleración del motor 2 s
Cuando no se lo selecciona
como una opción:
Retardo de activación fijo 0,5 s
(-AL, -FC) 1 segundo
Retardo de restablecimiento fijo 1 segundo
(-AL solamente) tan pronto como la corriente esté dentro de los
límites
(-FC solamente) 0,5 s
Características de entrada
Potencia de control 24 V CA o 115 V CA
Características de salida
Clasificación nominal de
contacto de salida (SPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
Características generales
Rango de temperatura -40 °C a 70 °C (-40 °F a 158 °F)
Tamaño del cable 12-24 AWG
Tamaño del orificio 18,4 mm (0,725") de diámetro
Torque del terminal 0,8 Nm (7 in-lb).
Marcas de seguridad
CSA, CSA-NRTL/C (Archivo #46510)
CE
Dimensiones H 42,42 mm (1,67"); A 58,42 mm (2,3");
P 90,43 mm (3,56")
Peso 226,8 g (8 oz; 0,5 lb)
Método de montaje Cuatro tornillos n.º 6 de 3/4" de largo
Precaución: No utilice este producto como medida de seguridad única para aplicaciones de protección.
Información para pedir
MODELO VOLTAJE DE LÍNEA RANGO DE CORRIENTE DESCRIPCIÓN
LSRU-024-AL-2 24 V CA 5-25 A Lógica de alarma
LSRU-024-AL-3 24 V CA 25-100 A Lógica de alarma
LSRU-115-AL-1.5 115 V CA 0-10 A Lógica de alarma
LSRU-115-AL-2 115 V CA 5-25 A Lógica de alarma
LSRU-115-AL-3 115 V CA 25-100 A Lógica de alarma
LSRU-115-FC-1.5 115 V CA 0-10 A Lógica de control de alimentador
LSRU-115-OT-1.5 115 V CA 0-10 A Lógica de control para motores con activación por sobrecorriente, ajuste del retardo de disparo (0,5-60 s)
LSRU-115-OT-2 115 V CA 5-25 A Lógica de control para motores con activación por sobrecorriente, ajuste del retardo de disparo (0,5-60 s)
LSRU-115-OT-3 115 V CA 25-100 A Lógica de control para motores con activación por sobrecorriente, ajuste del retardo de disparo (0,5-60 s)
LSRU-115-OR-1.5 115 V CA 0-10 A Lógica de control para motores con activación por sobrecorriente, ajuste del retardo de restablecimiento (0,5-
300 s, manual)
LSRU-115-OR-2 115 V CA 5-25 A Lógica de control para motores con activación por sobrecorriente, ajuste del retardo de restablecimiento (0,5-
300 s, manual)
LSRU-115-UE-2 115 V CA 5-25 A Lógica de control para motores con activación por corriente insuficiente, ajuste del retardo de restablecimiento
extendido (2-300 m, manual)
LSRU-115-UT-2 115 V CA 5-25 A Lógica de control para motores con activación por corriente insuficiente, ajuste del retardo de disparo (0,5-60 s)
LSRU-115-UT-3 115 V CA 25-100 A Lógica de control para motores con activación por corriente insuficiente, ajuste del retardo de disparo (0,5-60 s)
LSRU-115-UR-2 115 V CA 5-25 A Lógica de control para motores con activación por corriente insuficiente, ajuste del retardo de restablecimiento
(0,5-300 s, manual)
LSRU-115-OU-1.5 115 V CA 0-10 A Lógica de control para motores con activación por sobrecorriente y corriente insuficiente
LSRU-115-OU-2 115 V CA 5-25 A Lógica de control para motores con activación por sobrecorriente y corriente insuficiente
LSRU-115-OU-3 115 V CA 25-100 A Lógica de control para motores con activación por sobrecorriente y corriente insuficiente
CLAVE DE N.º DE PIEZA
O = Activación por sobrecorriente
U = Ajuste por corriente insuficiente
T = Ajuste del retardo de disparo (0,5-60 s)
R = Ajuste del retardo de restablecimiento (0,5-300 s, manual)
E = Ajuste del Retardo de restablecimiento extendido (2-300 minutos, manual)
1.5 = 0-10 amperios
2 = 5-25 amperios
3 = 25-100 amperios
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 173
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/lsrx-lsrxc
SERIE LSRX/LSRX-C
Sensor de carga automático, relevador de
prueba de bajo costo
Diagrama de conexiones
Descripción
La serie LSRX/LSRX-C consta de sensores de corriente CA diseñados
para energizar el contacto de salida siempre que exista una corriente
mínima de 4,5 amperios. La serie LSRX/LSRX-C se utiliza comúnmente
como un relevador de prueba de corriente CA para indicar si un motor
está funcionando. Se puede utilizar también para bloquear ventiladores,
compresores y motores; para indicar el estado de un equipo, por
ejemplo, índices del alimentador, desgaste de herramientas, pérdida
de suministro en bombas, viscosidad de mezcladores y todo tipo de
condiciones de detección de corriente o para monitorear motores de
bombas, enfriadores y otra maquinaria.
Este dispositivo combina un transformador de corriente (CT), un
transductor y un relevador de salida de corriente alta para conmutar
circuitos de alarma, contactos y cargas inductivas y resistivas. La
serie LSRX/LSRX-C puede cumplir la función de un contacto auxiliar,
aunque tiene las ventajas de una aplicación universal y propiedades de
aislamiento.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Automático Elimina la necesidad de un control de voltaje adicional.
Induce potencia desde las conexiones bajo monitoreo
Terminales de conexión
rápida Ahorra tiempo de instalación
Indicación LED Indicación visual sobre el estado del relevador
El sensor de corriente
integrado monitoreará
cargas de hasta 200 A
Elimina la necesidad de un transformador de corriente
independiente y además proporciona aislamiento entre los
circuitos de control y los sistemas monitoreados
Accesorios
Informer IR Kit-36 (cable adaptador infrarrojo de
91,4 mm [36"])
Se conecta en la parte frontal de la unidad para brindar
diagnóstico remoto sin abrir el panel.
Especificaciones
Características de entrada
Corriente de funcionamiento 5-200 A continua
Corriente de enganche máxima 4,5 A (típica); 7 A (máx.)*
Alimentación inducida desde el conductor de CA
Características de salida
Clasificación nominal de
salida de relevador
(SPST - Forma A)
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 5 A a 240 V CA
Duración eléctrica 1x105
Duración mecánica 1x107
Diámetro máximo del
conductor 17,8 mm (0,7 in)
Terminales de salida
LSRX Conector rápido de 6,35 mm (0,25”)
LSRX-C Terminales de tornillo no conectables
Clasificación nominal de torque 0,33 Nm (3 in-lb)
Figure 1: Typical Wiring Diagram
VOLTAJE
DE CONTROL
MOTOR
LSRX-C
LUZ
INDICADORA
L1 L2 L3
POTENCIA
DE ENTRADA
Información para pedir
MODELO DESCRIPCIÓN
LSRX Terminal de conexión rápida
LSRX-C Terminales de tornillo no conectables
LSRX-OEM Terminales de conexión rápida, paquete de 10
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 511, Figura 13.
174 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/lsrx-lsrxc
Características generales
Rango de temperatura:
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Tamaño del orificio 19,3 mm (0,72") de diámetro
Tamaño del cable 12-26 AWG
Indicador de estado de relé
de salida LED
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 2, contacto de 4 kV,
aéreo de 4 kV
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de 2 kV,
potencia de entrada/salida de 1 kV
Sobretensión
IEC 61000-4-5, Nivel 3, 2 kV de línea a línea;
2 kV de línea a tierra
Marcas de seguridad
Reconocimiento UL 508 (Archivo # E68520)
CE IEC 60947
Dimensiones H 68,58 mm (2,7"); A 28,7 mm (1,13");
P 63,5 mm (2,5")
Peso 136,08 g (4,8 oz; 0,3 lb)
Método de montaje Montaje en superficie
*Los conductores pueden estar conectados en bucle para aplicaciones de motores más pequeños.
SERIE LSRX/LSRX-C
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 175
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ecs
SERIE ECS
Descripción
La serie ECS de sensores de corriente CA monofásicos es un control
de detección universal de sobrecorriente y corriente insuficiente.
Su sensor toroidal integrado elimina la inconveniencia de instalar un
transformador de corriente independiente. Incluye ajustes integrados
para modo de detección de corriente, punto de activación y retardo
de disparo. Detecta eventos de sobrecorriente y corriente insuficiente
como motores bloqueados, pérdida de carga, un calentador abierto o
carga de luces, o demuestra que un funcionamiento está en ejecución o
si ha finalizado.
Funcionamiento
El voltaje de entrada debe ser suministrado en todo momento para un
funcionamiento correcto. Al detectar una falla a través del relevador
de activación, el relevador de salida se energiza. Cuando la corriente
regresa a su condición de funcionamiento normal, o a cero, el relevador
de salida y el retardo de disparo son restablecidos. Si se detecta una
falla y se la corrige antes de finalizar el retardo de disparo, el relevador
no se energizará y el retardo de disparo se restablece en cero.
Ajuste
Seleccione la función deseada, detección de sobrecorriente o corriente
insuficiente. Defina el punto de activación y el retardo de disparo a
una configuración aproximada. Suministre energía al ECS y a la carga
monitoreada. Gire el ajuste y observe las luces LED. Los LED se
encenderán; gire levemente en dirección opuesta hasta que los LED se
apaguen. El ajuste puede realizarse mientras está conectado al sistema
de circuitos de control si el relevador de activación se define en el valor
máximo. Para aumentar la sensibilidad, puede realizar varios giros en el
sensor toroidal del ECS. El rango del punto de activación se divide por
el número de giros en el sensor toroidal para crear un rango nuevo. Al
utilizar un CT externo, seleccione un CT de salida de 2 VA, 0-5 A para la
corriente que será monitoreada. Seleccione el rango de ajuste
ECS 0. Pase un alambre de terminal secundaria a través del toroide ECS
y conéctelo al cable de terminal secundario.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Detección de corriente
toroidal integrada
Elimina la necesidad de instalar transformadores de
corriente independientes y brinda aislamiento del circuito
monitoreado
Encapsulado Protege contra impactos, vibración y humedad
Modo ajustable, punto de
activación y retardo de
disparo
Brinda flexibilidad para utilizar en diversas aplicaciones
Relevador de salida aislado
SPDT de 10 A Permite controlar las cargas para voltajes de CA o CC
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Diagrama de conexiones
V = Voltaje
I> = Sobrecorriente
I< = Corriente insuficiente
W = Cable de transferencia aislado
Corriente monitoreada
Los contactos del relevador están
aislados.
Sensores de corriente
Información para pedir
Ver página siguiente.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 34.
176 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/ecs
SERIE ECS
Información para pedir
MODELO DETECCIÓN VOLTAJE DE
ENTRADA
PUNTO DE ACTIVACIÓN
AJUSTABLE
RETARDO DE
ACTIVACIÓN
RETARDO DE DETECCIÓN DE
PUESTA EN MARCHA
ECS20BC Seleccionable, por sobrecorriente o corriente insuficiente 24 V CA 0,5-5 A 0,5-50 s 1 s
ECS21BC Seleccionable, por sobrecorriente o corriente insuficiente 24 V CA 2-20 A 0,5-50 s 1 s
ECS2HBC Seleccionable, por sobrecorriente o corriente insuficiente 24 V CA 5-50 A 0,5-50 s 1 s
ECS30AC Seleccionable, por sobrecorriente o corriente insuficiente 24 V CC 0,5-5 A 0,150-7 s 1 s
ECS40A Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 0,5-5 A 0,150-7 s 0 s
ECS40AC Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 0,5-5 A 0,150-7 s 1 s
ECS40BC Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 0,5-5 A 0,5-50 s 1 s
ECS41A Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 2-20 A 0,150-7 s 0 s
ECS41AC Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 2-20 A 0,150-7 s 1 s
ECS41BC Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 2-20 A 0,5-50 s 1 s
ECS41BD Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 2-20 A 0,5-50 s 2 s
ECS41BH Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 2-20 A 0,5-50 s 6 s
ECS4HBC Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 5-50 A 0,5-50 s 1 s
ECS4HBH Seleccionable, por sobrecorriente o corriente insuficiente 120 V CA 5-50 A 0,5-50 s 6 s
ECS60AH Seleccionable, por sobrecorriente o corriente insuficiente 230 V CA 0,5-5 A 0,150-7 s 6 s
ECS60BC Seleccionable, por sobrecorriente o corriente insuficiente 230 V CA 0,5-5 A 0,5-50 s 1 s
ECS61BC Seleccionable, por sobrecorriente o corriente insuficiente 230 V CA 2-20 A 0,5-50 s 1 s
ECS6HAH Seleccionable, por sobrecorriente o corriente insuficiente 230 V CA 5-50 A 0,150-7 s 6 s
ECSH21F2.5C Sobrecorriente 24 V CC 2-20 A 2,5 s 1 s
ECSH30AC Sobrecorriente 24 V CC 0,5-5 A 0,150-7 s 1 s
ECSH31AD Sobrecorriente 24 V CC 2-20 A 0,150-7 s 2 s
ECSH31F.08D Sobrecorriente 24 V CC 2-20 A 0,08 s 2 s
ECSH3HF0.08D Sobrecorriente 24 V CC 5-50 A 0,08 s 2 s
ECSH34F.08C Sobrecorriente 24 V CC 4 A no ajustable 0,08 s 1 s
ECSH40A Sobrecorriente 120 V CA 0,5-5 A 0,150-7 s 0 s
ECSH40AC Sobrecorriente 120 V CA 0,5-5 A 0,150-7 s 1 s
ECSH40AD Sobrecorriente 120 V CA 0,5-5 A 0,150-7 s 2 s
ECSH41AC Sobrecorriente 120 V CA 2-20 A 0,150-7 s 1 s
ECSH41AD Sobrecorriente 120 V CA 2-20 A 0,150-7 s 2 s
ECSH41BC Sobrecorriente 120 V CA 2-20 A 0,5-50 s 1 s
ECSH41F.08D Sobrecorriente 120 V CA 2-20 A 0,08 s 2 s
ECSH4HAD Sobrecorriente 120 V CA 5-50 A 0,150-7 s 2 s
ECSH4HF.08D Sobrecorriente 120 V CA 5-50 A 0,08 s 2 s
ECSH61AD Sobrecorriente 230 V CA 2-20 A 0,150-7 s 2 s
ECSL31A Corriente baja 24 V CC 2-20 A 0,150-7 s 0 s
ECSL40AC Corriente baja 120 V CA 0,5-5 A 0,150-7 s 1 s
ECSL40B Corriente baja 120 V CA 0,5-5 A 0,5-50 s 0 s
ECSL40BH Corriente baja 120 V CA 0,5-5 A 0,5-50 s 6 s
ECSL41A Corriente baja 120 V CA 2-20 A 0,150-7 s 0 s
ECSL41AD Corriente baja 120 V CA 2-20 A 0,150-7 s 2 s
ECSH4HAD Sobrecorriente 120 V CA 5-50 A 0,150-7 s 2 s
ECSL41AH Corriente baja 120 V CA 2-20 A 0,150-7 s 6 s
ECSL4HAC Corriente baja 120 V CA 5-50 A 0,150-7 s 1 s
ECSL4HBH Corriente baja 120 V CA 5-50 A 0,5-50 s 6 s
ECSL61AH Corriente baja 230 V CA 2-20 A 0,150-7 s 6 s
ECSL6HAC Corriente baja 230 V CA 5-50 A 0,150-7 s 1 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 177
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
SERIE ECS
Especificaciones
Sensor
Tipo Toroidal a través de orificio para cableado
Modo Sobrecorriente o corriente insuficiente, interruptor
seleccionable en la unidad o fijo de fábrica
Rango del punto de activación 0,5-50 A en 3 rangos ajustables o fijos
Tolerancia
Ajustable Rango garantizado
Fijo 0,5-25 A: 0,5 A o ± 5 % lo que sea inferior;
26-50 A: ± 2,5 %
Corriente máxima permisible Corriente uniforme – ciclos de 50 A;
Corriente de inserción – ciclos de 300 A por 10 s
Histéresis del punto de
activación ≅ ± 5 %
Punto de activación vs.
Temperatura ±5%
Tiempo de respuesta ≤ 75 ms
Frecuencia 45/500 Hz
Tipo de detección Detección de picos
Retardo de activación
Tipo Analógico
Rango
Ajustable 0,150-7 s; 0,5-50 s (rangos garantizados)
Fijo de fábrica +/- 10 %
Retardo vs. Temperatura ±15%
Retardo de detección de puesta
en marcha Fijo de fábrica 0-6 s: +40 %, -0 %
Entrada
Voltaje 24, 120, o 230 V CA; 12 o 24 V CC
Tolerancia
12 V CA y 24 V CC/CA -15-20 %
120 y 230 V CA -20-10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Relevador electromecánico
Forma Aislada, SPDT
Clasificación nominal 10 A resistiva a 240 V CA; 1/4 HP a 125 V CA;
1/2 HP a 250 V CA
Duración Mecánica - 1 x 106
; Eléctrica - 1 x 105
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 2500 V RMS entre terminales de entrada y salida
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje en superficie con dos tornillos n.º 6
(M3.5 x 0.6)
Dimensiones H 88,9 mm (3,5"); A 63,5 mm (2,5");
P 44,5 mm (1,75")
Terminación Terminales de conector rápido macho (6,35 mm) (5)
Entorno
Temperatura de
funcionamiento/macenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 181 g (6,4 oz)
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
A = Retardo de detección de
puesta en marcha
TD = Retardo de activación
TP = Punto de activación
R = Restablecer
OC = Corriente monitoreada
Diagrama de funciones
www.littelfuse.com/ecs
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
178 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/ecsw
SERIE ECSW
Descripción
La serie ECSW de sensores de corriente tipo ventana CA monofásicos
incluye puntos de activación por sobrecorriente y corriente insuficiente
ajustables. Detecta rotores bloqueados, trabas, pérdida de carga,
calentadores abiertos o cargas en luces, correas rotas o pérdida de
succión. Los LED ayudan a ajustar el punto de activación y brindan
indicación sobre fallas. El sensor toroidal integrado elimina la necesidad
de un transformador de corriente externo. El relevador de salida
puede bloquearse eléctricamente luego de una falla, o restablecerse
automáticamente. Restablecimiento remoto de un relevador de salida
bloqueado aislando el voltaje de entrada. La unidad incluye detección
de corriente cero seleccionable por interruptor y funcionamiento de
relevador de salida energizado o desenergizado. Los retardos de tiempo
se incluyen para mejorar el funcionamiento y eliminar interrupciones no
deseadas.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Detección de corriente
toroidal integrada
Elimina la necesidad de instalar transformadores de
corriente independientes y brinda aislamiento del circuito
monitoreado
Encapsulado Protege contra impactos, vibración y humedad
Indicación LED Indicación visual para ajuste del punto de activación e
indicación sobre fallas
Diversas funciones
seleccionables por
interruptor
Detección de corriente cero seleccionable por el usuario,
corriente bloqueada, normalmente desenergizada o
relevador de salida energizado que añade flexibilidad en la
aplicación
Retardo de activación
ajustable
Elimina las interrupciones no deseadas y previene
el ciclo rápido
Contactos de salida SPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Funcionamiento
Cuando se aplica el voltaje de entrada, el retardo de detección de
puesta en marcha se activa y el relevador de salida transfiere corriente
(si se elije la opción de normalmente energizado). Una vez completado
el retardo de puesta en marcha, comienza la detección de corriente
monitoreada. En la medida en que la corriente esté por encima del
punto de activación por corriente insuficiente y por debajo del punto de
activación por sobrecorriente (dentro de la corriente tipo ventana), el
relevador de salida permanece en su estado normal de funcionamiento y
Diagrama de conexiones
Sensores de corriente
L1
N/L2
MC = Contactor del motor
M = Motor
F = Fusibles
OL = Sobrecarga
RSW = Interruptor de restablecimiento
FSW = Contactos de flotante o ventilador
CR = Relevador de control
CS = Sensor de corriente
MCC = Bobina de contactor del motor
V = Voltaje
I> = Sobrecorriente ajustable
I< = Corriente insuficiente ajustable
W = Cable monitoreado
∆T - Retardo de activación ajustable
Información para pedir
MODELO VOLTAJE DE ENTRADA PUNTO DE ACTIVACIÓN
AJUSTABLE.
RETARDO DE
ACTIVACIÓN
RETARDO DE DETECCIÓN DE PUESTA EN
MARCHA CONECTOR.
ECSW3LABT 24 V CC 0,5-5 A 0,150-7 s 0,1 s Bloques de terminal
ECSW4HBHT 120 V CA 5-50 A 0,5-50 s 6 s Bloques de terminal
ECSW4LADT 120 V CA 0,5-5 A 0,150-7 s 2 s Bloques de terminal
ECSW4LBHT 120 V CA 0,5-5 A 0,5-50 s 6 s Bloques de terminal
ECSW4MACT 120 V CA 2-20 A 0,150-7 s 1 s Bloques de terminal
ECSW4MBHT 120 V CA 2-20 A 0,5-50 s 6 s Bloques de terminal
ECSW4MBGT 120 V CA 2-20 A 0,5-50 s 5 s Bloques de terminal
ECSW6MBHT 230 V CA 2-20 A 0,5-50 s 6 s Bloques de terminal
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 34.
©2018 Controladores y Relevadores de Protección de Littelfuse 179
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
SERIE ECSW
los LED de color rojo permanecen desactivados. Los LED de color verde
se encienden cuando el relevador de salida se energiza. Si la corriente
varía fuera de la corriente tipo ventana, los LED de color rojo se ilumina,
y comienza el retardo de disparo. Si la corriente permanece fuera de la
corriente tipo ventana durante el retardo de disparo, el relevador cambia
al estado de condición de falla. Si la corriente estabiliza sus niveles
(dentro de la corriente tipo ventana) durante el retardo de disparo, los
LED de color rojo se apagan, el retardo de disparo se restablece y el
relevador de salida permanece en condición normal.
Restablecer: aísle el voltaje de entrada o accione el interruptor de
bloqueo. Si selecciona detección de corriente cero, la unidad se
restablecerá una vez que detecte la corriente.
Funcionamiento con la función de detección de corriente cero
activada: si la corriente se disminuye a cero dentro del periodo de
retardo de disparo, entonces se observará la corriente cero como
un nivel de corriente aceptable. El relevador de salida de la unidad
permanece en su estado de funcionamiento normal. Esto permite que la
carga monitoreada realice su ciclo de encendido y apagado sin disparos
perjudiciales del ECSW. La corriente cero se define como un flujo de
corriente inferior a ciclos de 250 miliamperios.
Nota: Al seleccionar detección de corriente cero, el funcionamiento de
bloqueo del interruptor SW2 se cancela, y el relevador de salida no se
bloqueará luego de una activación por falla.
Notas acerca del funcionamiento
1. No hay histéresis en los puntos de activación. Los puntos de
activación por sobrecorriente y corriente insuficiente deben ajustarse
para brindar protección adecuada contra los ciclos cortos.
2. Si el punto de ajuste superior se define debajo del punto de ajuste
inferior, ambos LED de color rojo se activarán indicando un error de
ajuste.
3. Si selecciona detección de corriente cero (SW2 activado), y el sistema
está activado para desconectar la carga monitoreada, el sistema
podrá tener ciclos cortos. Después de que se active la unidad, la
carga se desenergiza y se detecta la corriente cero. El ECSW se
restablece y la carga se energiza de inmediato nuevamente y puede
iniciar un ciclo corto.
4. El retardo de detección de arranque solo ocurre cuando se aplica el
voltaje de entrada. Cuando se selecciona la detección de corriente
cero, el retardo de disparo debe ser mayor a la duración de la
corriente de inserción o la unidad se activará por la corriente de
inserción.
Funcionamiento típico del circuito de protección del ventilador o la bomba
Detección de corriente tipo ventana: con el ECSW conectado tal
como se muestra en el diagrama, una carga puede ser monitoreada
y controlada por sobrecorriente y corriente insuficiente. El CT (CS)
integrado de la serie ECSW puede ser ubicado en el lado de carga o
de la línea del contactor. Los interruptores de selección del ECSW se
ajustan para la detección de corriente cero (consulte Interruptor de
selector SW2) y la selección del relevador de salida es normalmente
desenergizada (consulte Interruptor de selector SW3). El voltaje de
entrada (V) se aplica al ECSW constantemente. A medida que el
interruptor de control (FSW) se cierra, el voltaje de entrada (V) se
aplica a la bobina del contactor del motor (MCC), y el motor (M) se
energiza. A medida que la corriente permanece debajo de los puntos
de activación por sobrecorriente y corriente insuficiente, los contactos
de salida del ECSW permanecen desenergizados. Si la corriente de
carga debe aumentar o reducir respecto del punto de activación, para
el retardo de disparo total, el contacto normalmente abierto (NO) se
cerrará, energizando el colector del relevador de control (CR) El contacto
normalmente abierto CR (CR1) se abre y el MCC se desenergiza y CR
se bloquea por medio de sus contactos normalmente abiertos (CR2).
El restablecimiento se logra abriendo parcialmente el interruptor de
restablecimiento normalmente cerrado (RSW).
Nota: Si la corriente cae a cero dentro del retardo de disparo, el ECSW
permanece desenergizado. El relevador de detección de puesta en
marcha se activa al aplicar el voltaje de entrada; por lo tanto, el retardo
de disparo debe ser mayor a la duración de la corriente de inserción
del motor. El relevador de bloqueo externo CR2 es necesario en este
sistema para prevenir el ciclo rápido. Se puede añadir un temporizador
para programar un restablecimiento automático.
Interruptor del selector
Sin uso
Bloqueado
Cero I
Relevador de salida - Normalmente energizado
Encendido Apagado
SW1
SW2
SW3
Interruptores de selección de modo
SW1 = Selector de restablecimiento automático o bloqueado
Apagado - Restablecimiento automático luego de una falla
Encendido - El relevador de salida se bloquea luego de
que una falla active la unidad
SW2 = Detección de corriente cero (inferior a 250 mA)
Apagado - Detección de corriente cero desactivada
Encendido - Detección de corriente cero activada
SW3 = Relevador de salida durante funcionamiento normal
Apagado - Relevador de salida desenergizado
Encendido - Relevador de salida energizado
www.littelfuse.com/ecsw
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
180 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/ecsw
SERIE ECSW
Especificaciones
Sensor
Tipo Toroide, a través de orificio para cableado de cable
THHN de hasta 21,1 mm2
(n.º 4 AWG)
Modo Puntos de activación por sobrecorriente y corriente
insuficiente (detección de corriente tipo ventana)
Rango del punto de activación 0,5-50 A en rangos ajustables
Tolerancia Rango garantizado
Corriente máxima permisible Corriente uniforme – ciclos de 50 A; Corriente de
inserción – ciclos de 300 A durante 10 s
Punto de temporización vs.
temperatura y voltaje ± 5 %
Tiempo de respuesta ≤ 75 ms
Frecuencia 45/500 Hz
Tipo de detección Detección de picos
Detección de corriente cero Ciclos de < 250 mA típicos
Retardo de tiempo
Rango 0,15-50 s en 2 rangos ajustables
o 0,1-50 s fijos
Tolerancia Ajustable: rango garantizado; fijo: ± 10 %
Retardo de detección de
puesta en marcha Fijo ≅ 0,1-6 s en incrementos de 1 segundo
Tolerancia +40 % -0 %
Retardo vs. Temperatura y voltaje ± 15 %
Entrada
Voltaje 24, 120, o 230 V CA; 12 o 24 V CC
Tolerancia
12 V CA y 24 V CA/CC -15 %-20 %
120 y 230 V CA -20 %-10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Relevador electromecánico
Modo: seleccionable
por interruptor
Encendido Energizado durante el funcionamiento normal,
desenergizado luego de una falla
Apagado Desenergizado durante el funcionamiento normal,
se energiza al ocurrir una falla
Forma Aislada, SPDT
Clasificación nominal 10 A resistiva a 240 V CA; 1/4 HP a 125 V CA;
1/2 HP a 250 V CA
Duración Mecánica - 1 x 106
; Eléctrica - 1 x 105
Tipo de bloqueo Eléctrico
Restablecimiento Aísle el voltaje de entrada
Función Interruptor con función de bloqueo seleccionable
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 2500 V RMS entre terminales de entrada y salida
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje en superficie con dos tornillos n.º 6 (M3.5 x 0.6)
Dimensiones H 88,9 mm (3,5"); A 63,5 mm (2,5");
P 44,5 mm (1,75")
Terminación Bloques de terminal de 5 mm (0,197 in) para cables de
3,2 mm2
(n.º 12 AWG)
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 181 g (6,4 oz)
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 181
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tcs
SERIE TCS
Descripción
La serie TCS es un método de bajo costo para detección de corriente
activa o inactiva. Incluye un relevador de salida de estado sólido para
reducir o aumentar la corriente al estar conectado directamente a
un módulo de entrada digital PLC estándar. Su relevador de salida
normalmente abierto o cerrado puede utilizarse para controlar
relevadores, luces, válvulas y calentadores pequeños con clasificación
nominal de hasta 1 A de corriente uniforme, y 10 A para corriente de
inserción. El TCS es automático (no requiere de alimentación externa
para operar la unidad) y está disponible con un rango de actuación
ajustable de 2 a 20 A o puntos de actuación fijos desde fábrica de 2 a
45 A.
Funcionamiento
Normalmente abierto: cuando una corriente es igual o mayor que la
corriente activa, pasa a través del sensor toroidal, y el relevador de salida
se cierra. Cuando la corriente se reduce al 95 % de la corriente activa, o
a un nivel inferior, el relevador de salida se abre.
Normalmente cerrado: cuando la corriente a través del toroide es igual
o mayor que la corriente activa, el relevador de salida se abre. Cuando la
corriente se reduce al 95 % de la corriente activa, el relevador de salida
se cierra. Para aumentar la sensibilidad, puede realizar varios ajustes en
el sensor toroidal del TCS. El rango del punto de activación se divide por
el número de giros en el sensor toroidal para crear un rango nuevo. Al
utilizar un CT externo, seleccione un CT de salida de 2 VA, 0-20 A para
la corriente que será monitoreada. Seleccione el rango de ajuste TCS
0. Pase un alambre del terminal secundario a través del toroide TCS y
conéctelo al cable de terminal secundario.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Automático No se requiere control de voltaje para operar la
unidad
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni
desgaste prematuro y unidad encapsulada para
proteger contra choques eléctricos, vibración y
humedad.
Puede conectarse
directamente
al PLC
Incluye un relevador de salida de estado sólido para
reducir o aumentar la corriente al estar conectado
directamente a un módulo de entrada digital
PLC estándar.
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o
corriente de inserción de
10 A
Proporciona 100 millones de operaciones en
condiciones típicas
Aislamiento completo
entre el circuito de control
y la corriente monitoreada
Permite monitorear una carga en un sistema
eléctrico separado
Sensor de corriente
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE SALIDA CORRIENTE ACTIVA ESTRUCTURA DE
SALIDA MODELO VOLTAJE DE SALIDA CORRIENTE ACTIVA ESTRUCTURA DE
SALIDA
TCSG2A 3 a 50 V CA Fija, 2 A Normalmente abierta TCSH2B 24-240 V CA Fija, 2 A Normalmente cerrada
TCSGAA 3 a 50 V CA 2-20 A ajustable Normalmente abierta TCSH5B 24-240 V CA Fija, 5 A Normalmente cerrada
TCSGAB 3 a 50 V CA 2-20 A ajustable Normalmente cerrada TCSHAA 24-240 V CA 2-20 A ajustable Normalmente abierta
TCSH2A 24-240 V CA Fija, 2 A Normalmente abierta TCSHAB 24-240 V CA 2-20 A ajustable Normalmente cerrada
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
El conductor CA monitoreado
debe estar aislado.
L1
N/L2
L1
N/L2
L1
N/L2
L = Carga
V = Voltaje
PS = Suministro de energía
PLC = Módulo de entrada digital PLC
CONMUTACIÓN POSITIVA
DISIPADOR TÉRMICO
ABASTECIMIENTO ELÉCTRICO
CONMUTACIÓN NEGATIVA
L1
N/L2
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 35.
182 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/tcs
SERIE TCS
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un barril aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagrama de funciones
Especificaciones
Sensor
Tipo Toroide, a través de orificio para cableado, corriente
de alternancia, el cable de monitoreo debe estar
debidamente aislado
Corriente de accionamiento Ajustable: - 2-20 A, rango garantizado
Fija: - 2-45 A, +0/-20 %
Corriente de restablecimiento ≅ 95 % de la corriente activa
Corriente máxima permisible Corriente uniforme, ciclos de 50 A
Corriente de inserción - ciclos de 300 A durante 10 s
Corriente activa vs.
Temperatura y voltaje ≤ ± 5 %
Tiempos de respuesta Sobrecorriente - ≤ 200 ms
Corriente insuficiente - ≤ 1 s
Cargas < 0,5 VA
Salida
Tipo Estado sólido
Forma NO o NC
Clasificación nominal Corriente uniforme de 1 A, corriente de inserción
de 10 A
Voltaje CA - 24-240 V CA +10/-20 %
CC - 3-50 V CC
Caída de voltaje CA NO y NC - ≅ 2,5 V
CC NO y NC - ≅ 1,2 V
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 2000 V en terminales RMS para montaje en
superficie
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10 (M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 44,5 mm (1,75")
Terminación Terminales de conector rápido macho (6,35 mm) (2)
Orificio para sensor 9,14 mm (0,36 in) para cable THHN de hasta
21,1 mm2 (n.º 4 AWG)
Entorno
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
TP = Punto de disparo
OC = Corriente monitoreada
NO = Relevador de salida
normalmente abierto
NC = Relevador de salida
normalmente cerrado
R = Restablecer
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 183
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tcsa
SERIE TCSA
Descripción
La serie TCSA es un transductor de corriente de salida lineal, potenciado
en bucle, que proporciona una salida directamente proporcional a la
corriente CA RMS que pasa a través del toroide integrado. El TCSA
proporciona salida de 4 a 20 mA en un rango de alimentación eléctrica
de 10 a 30 V CC. Cada unidad viene calibrada de fábrica para monitorear
en uno de cuatro rangos: 0-5, 0-10, 0-20, o 0-50 A. El rango 0-5 A
permite el uso de transformadores de corriente externos para poder
monitorear cargas hasta de 1200 amperios de CA.
Funcionamiento
El TCSA varía la resistencia efectiva de su salida en proporción directa
a la corriente que fluye en el conductor monitoreado. La unidad viene
calibrada de fábrica de manera que 0 amperios proporcionan una salida
de 4 mA y un campo completo proporciona una salida de 20 mA. Los
ajustes completo y cero se proporcionan para ajustes de calibración
menores en el campo (según corresponda).
Al utilizar un transformador de corriente (CT) externo
Seleccione un CT de salida de 2 VA, 0 a 5 A para la corriente que
será monitoreada. Seleccione TCSA5. Pase uno de los conductores
secundarios del CT a través del toroide del TCSA. Conecte los
conductores secundarios del CT entre sí.
1
2
4
10
20
18
16
14
12
10
8
6
4
2
4
8
20
3
6
12
30
4
8
16
40
5
10
20
50
0
Salida
en mA
Amperaje de
corriente
monitoreada
Características
J Monitorea de 0 a 50 A en 4 rangos
J Potenciado en bucle desde 10 hasta 30 V CC
J Salida lineal de 4 a 20 mA
J Ajustes completo y cero
J Aislamiento completo entre el circuito de control y la corriente
monitoreada
Diagrama de conexiones
Transductores de corriente
PS
PS = Suministro de energía
Z = Ajuste a cero
S = Ajuste completo
W = Cable de transferencia
aislado Corriente
monitoreada
PLC = Entrada analógica PLC
o entrada de medidor
Información para pedir
MODELO RANGO DE CORRIENTE
TCSA5 0-5 A
TCSA10 0-10 A
TCSA20 0-20 A
TCSA50 0-50 A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 35.
184 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/tcsa
SERIE TCSA
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de
pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Especificaciones
Sensor
Tipo Toroide, a través de orificio para cableado, corriente
de alternancia, el conductor monitoreado debe estar
debidamente aislado
Corriente CA monitoreada 0-50 A
Rangos
4 rangos calibrados de fábrica 0-5 A, 0-10 A, 0-20 A, o 0-50 A
Calibración de fábrica ≤± 2 % de la escala completa
Corriente máxima permisible Corriente uniforme, ciclos de 50 A
Corriente de inserción - ciclos de 300 A durante 10 s
Exactitud de repetición ≤± 0,25 % de la escala completa bajo condiciones
fijas
Tiempo de respuesta ≅ 300 ms
Cargas ≤ 0,5 VA
Frecuencia de línea de CA
0-20 A/21-50 A 20-100 Hz/30-100 Hz
Coeficiente de temperatura ± 0,05 %/°C
Salida
Tipo: Conexión en serie Corriente directamente proporcional a la corriente
monitoreada
Rango 4-20 mA
Voltaje de alimentación
del sensor* 10 a 30 V CC
Voltaje parcial 40 V CC para 1 m
Ajuste a cero ≅ 3,75-4,25 mA
Ajuste completo 18 mA-22 mA
Ajuste Minitornillo, potenciómetro de 25 giros
Protección
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para montaje de
superficie
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades están protegidas contra polaridad
inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10 (M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 44,5 mm (1,75")
Terminación Terminales de conector rápido macho de 6,35 mm (0,25 in)
Orificio para sensor 9.14 mm (0,36 in) para cable de 21.1 mm2
(n.º 4 AWG)
Entorno
Temperatura de funcionamiento/
almacenamiento -30 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
*El voltaje de alimentación en bucle mínimo es igual al voltaje de detección mínimo de 10 V CC más la caída de
voltaje generada en todos los demás dispositivos de bucle a 20 mA.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 185
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/dcsa
Current measuring
device
Voltage measuring
device
LCSC10T12
Current Sensor
Connection for
4-20mA Loop
To LCSC10T12
Current Sensor Jumper used when
current source is not
LCSC10T12
Connection for
Analog Voltage Output
Connect One:
VDA = 1 to 5VDC
VDB = 2 to 10VDC
C
D
A
B
249Ω
249Ω
DCSA
AD = Instrument, meter or PLC input
PS = Power Supply
LCSC10T12
Sensor de corriente
Conector uno:
A = 1 a 5 V CC
B = 2 a 10 V CC
DCSA50
AD = Instrumento, Medidor,
o entrada de PLC
PS = Suministro de energía
SERIE DCSA
Descripción
La serie DCSA es un transductor de corriente de salida lineal, potenciado
en bucle, que proporciona una salida que es directamente proporcional
a la corriente CA RMS que pasa a través del sensor LCSC10T12. La
serie DCSA proporciona una entrada analógica o voltaje: 4-20 mA, 1 a
5 V CC, o 2 a 10 V CC. Cada unidad viene calibrada desde fábrica para
monitorear (con el LCSC10T12 conectado) en uno de cuatro rangos:
0-5, 0-10, 0-20, o 0-50 A. Los ajustes a cero y completo permiten la
calibración en campo si fuera necesario. La serie DCSA se adapta en
rieles DIN 1 y DIN 3.
Funcionamiento
La serie DCSA varía la resistencia efectiva de su salida en proporción
directa a la corriente que fluye en el conductor monitoreado por el
LCSC10T12. La conexión de la alimentación eléctrica a terminales C y D
proporciona una corriente de 4 a 20 mA CC. Conexión de la alimentación
eléctrica a terminales C y A para obtener 1 a 5 V CC en terminal D.
Conexión de la alimentación eléctrica a terminales C y B para obtener 2
a 10 V CC en terminal D.
Características
J Montaje en rieles DIN 1 o DIN 3
J 0-50 A en 4 rangos utilizando el sensor LCSC10T12
J Potenciado en bucle desde 10 hasta 30 V CC
J Salida lineal de 4-20 mA, 1-10 V CC
J Ajustes completo y cero
J Unidad de control y sensor adicionales
Accesorios
LCSC10T12 Sensor de corriente toroidal
Monitoreo remoto de corrientes de hasta 50 A.
Diagrama de conexiones
Transductores de corriente
CONEXIÓN PARA BUCLE DE 4-20 MA
Para sensor de corriente LCSC10T12
Current measuring
device
Voltage measuring
device
LCSC10T12
Current Sensor
Connection for
4-20mA Loop
To LCSC10T12
Current Sensor Jumper used when
current source is not
LCSC10T12
Connection for
Analog Voltage Output
Connect One:
VDA = 1 to 5VDC
VDB = 2 to 10VDC
C
D
A
B
249Ω
249Ω
DCSA
AD = Instrument, meter or PLC input
PS = Power Supply
Conector uno:
A = 1 a 5 V CC
B = 2 a 10 V CC
Empalme utilizado cuando la fuente
de corriente no es LCSC10T12
CONEXIÓN PARA SALIDA DE
VOLTAJE ANALÓGICA
DCSA50
AD = Instrumento, Medidor,
o entrada de PLC
PS = Suministro de energía
Información para pedir
MODELO RANGO DE CORRIENTE CON
LCSC10T12 RANGO DE ENTRADA (F A E)
DCSA5 0-5 A 0-5 mA CA
DCSA20 0-20 A 0-20 mA CA
DCSA50 0-50 A 0-50 mA CA
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 36.
186 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Transductores y relevadores de monitoreo de corriente
www.littelfuse.com/dcsa
SERIE DCSA
Especificaciones
Entrada
Rangos (sin
LCSC10T12 conectado)
4 rangos calibrados de fábrica
en mA CA 0-5 mA, 0-10 mA, 0-20 mA, or 0-50 mA CA
Calibración de fábrica ≤± 0,5 % de la escala completa
Exactitud de repetición ± 0,25 % de la escala completa bajo condiciones
fijas
Tiempo de respuesta ≅ 300 ms
Coeficiente de temperatura ± 0,05 %/°C
Entrada a salida Sin aislamiento
Salida
Tipo
Analógico Corriente directamente proporcional a la corriente
de entrada
Rango 4-20 mA, o 1 a 5 V CC o 2 a 10 V CC
Voltaje de alimentación* 10 a 30 V CC
Voltaje parcial 40 V CC para 1 m
Ajuste a cero ≅ 3,75-4,25 mA
Ajuste completo 18 mA-22 mA
Ajuste Minitornillo, potenciómetro multigiros
Protección
Voltaje disruptivo dieléctrico ≥ 2500 V en terminales RMS para montaje en
superficie
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades están protegidas contra polaridad
inversa
Mecánica
Montaje Montaje en rieles DIN 1 o DIN 3
Terminación
Fijación por cables Para 0,336 mm2
... 2,5 mm2
(22-14 AWG)
Entorno
Temperatura de funcionamiento/
almacenamiento -30 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 45,4 g (1,6 oz)
Accesorio - Sensor toroidal LCSC10T12
Número de ciclos 1000
Corriente de salida nominal
Rango completo 0-50 mA
Corriente máxima permisible Corriente uniforme, ciclos de 50 A; Corriente de
inserción, ciclos de 300 A durante 10 s
Cargas ≤ 0,5 VA
Frecuencia
0-20 A/21-50 A 20/100 Hz/30/100 Hz
Orificio para sensor 9,14 mm (0,36 in) para cable THHN de hasta 21.1 mm 2
(n.º 4 AWG)
Peso ≅ 28,3 g (1 oz)
*El voltaje de alimentación en bucle mínimo es igual al voltaje de detección mínimo de 10 V CC más
la caída de voltaje generada en todos los demás dispositivos de bucle a 20 mA.
Diagrama de amperaje de corriente monitoreada
mA 4 12 20
A
50, 20, 10, 5
25, 10, 5, 2.5
0
Monitored
Current
Amps
2
1
6
3
10
5 V CC
Salida
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 187
Relevadores de protección
Transductores y relevadores de monitoreo de corriente Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/lcs-lpm
SERIE LCS10T12/LPM
Descripción
El LCS10T12 conectado a un indicador LPM12 o LPMG12 es un sistema
de indicación de activación/desactivación económico y fácil de utilizar
para el monitoreo remoto del flujo de corriente. El LCS10T12 se instala
en un cable debidamente aislado de la carga monitoreada. Sus extremos
de 30,4 cm (12 in) se conectan al indicador de montaje en panel LPM12
o LPMG12 directamente o por medio de cables adaptados por el cliente
hasta por 152,4 m (500 ft) de longitud.
Funcionamiento
Cuando la corriente monitoreada sea de ciclos de 5 A, el indicador LPM
de montaje en panel se encenderá. El LCS10T12 está diseñado para
maximizar la salida de iluminación del indicador de montaje en panel.
Puede ser utilizado para monitorear el flujo de corriente inferior a 5 A
cuando se pasa el conductor controlado dos o más veces a través del
sensor.
Precaución: El LCS10T12 debe estar conectado a los LPM12 o
LPMG12 antes de que fluya la corriente para prevenir daños o peligros
por choques eléctricos. Las conexiones monitoreadas deben estar
debidamente aisladas.
El indicador de montaje en panel está diseñado para adaptarse a la
salida del LCS10T12. Los LPM12 y LPMG12 vienen con cables de
30,4 cm (12 in) y una abrazadera de montaje de una sola pieza. Ambos
dispositivos se instalan rápidamente en un orificio de 6,35 mm (0,25 in)
en paneles de 0,79 a 1,6 mm (0,031 a 0,062 in) de espesor
Características
J Indicación de activación/desactivación de bajo costo
J Puede conectarse a cables hasta de 152,4 m (500 ft) de longitud
J Monitoreo remoto de corrientes de hasta 50 A.
J Indicadores LED color rojo o verde disponibles
Especificaciones
Corriente monitoreada
Rango de corriente 2-50 A CA
Paso de
cableado mín. Corriente Máx. Corriente Máx. Corriente
de inserción
Máx. Diámetro
del cable
1 5 A 50 A 120 A 9 mm (0,355 in)
2 2,5 A 25 A 60 A 4,7 mm (0,187 in)
3 1,7 A 16,6 A 40 A 3,8 mm (0,15 in)
4 1,3 A 12,5 A 30 A 3,2 mm (0,125 in)
5 5/X 50/X 120/X
Corriente máxima Ciclos de 50 A, continua
Frecuencia de línea 50/60 Hz
Resistencia de CC de
limitador de corriente 65 Ω
Mecánica
Orificio para sensor 9,14 mm (0,36 in) para cable THHN de hasta
21,1 mm2
(n.º 4 AWG)
Terminación Conductores de 30,4 cm (12 in)
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Peso LCS: ≅ 23 g (0,8 oz)
LPM: ≅ 6 g (0,2 oz)
Diagrama de conexiones
Indicadores de corriente
Longitud del cable: 152,4 m
(500 ft) máximo.
(Provisto por el usuario)
Precaución: El LCS10T12 debe
estar conectado a los LPM12 o
LPMG12 antes de que fluya la
corriente para prevenir daños o
peligros por choques eléctricos. Las
conexiones monitoreadas deben estar
debidamente aisladas.
Información para pedir
MODELO DESCRIPCIÓN
LCS10T12 Sensor de corriente CA
LPM12 Indicador LED rojo
LPMG12 Indicador LED verde
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 37 y 38.
188 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/50r
Descripción
El monitor de voltaje monofásico serie 50R tiene un circuito de
detección de voltaje que monitorea constantemente la alimentación
monofásica para condiciones de voltaje bajo. Los motores o ventiladores
monofásicos, compresores, acondicionadores de aire, bombas de
calefacción, pozo sépticos, sumideros y motores para bandas de
transporte corresponden para la serie 50R.
Al detectar una condición peligrosa, el relevador de salida de MotorSaver
se desactiva luego de cumplirse el retardo de disparo definido. El
relevador de salida se reactiva luego de que las condiciones de la línea
de alimentación regresen a un nivel aceptable y haya transcurrido un
lapso de tiempo determinado (retardo de restablecimiento). El retardo
de restablecimiento previene los disparos perjudiciales ante condiciones
de líneas de alimentación rápidamente variables.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos de
detección de voltaje del
propietario
Monitoreo constante de alimentación eléctrica monofásica
para una condición de voltaje bajo
Configuraciones del retardo
de disparo ajustable
(modelos -3) y retardo de
restablecimiento (modelos -2)
Previenen los disparos perjudiciales debido a condiciones
de líneas de suministro rápidamente variables y permiten
puestas en marcha escalonadas para múltiples motores,
para evitar una condición de voltaje bajo
Detección de voltaje alto
(modelos -9)
Activaciones y restablecimientos según porcentaje fijo del
punto de ajuste: activación 110 %, restablecimiento 107 %.
Contactos de relevador de
600 V disponibles en algunos
modelos
Elimina la necesidad de un transformador de control para
variar el voltaje de 120-240 V para un circuito de control
Monitor de voltaje monofásico
SERIE 50R
Diagrama de conexiones
50R
CONTACTOR
MAGNÉTICO
DETENER
APAGAR
AUTO CONTACTO PRINCIPAL
MANUAL INICIAR
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
Información para pedir
MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN
50R-100 95-120 V CA Retardo de restablecimiento y disparo fijo
50R-100-2 95-120 V CA Retardo de restablecimiento variable y disparo fijo (manual, 2-300 s)
50R200 190-240 V CA Retardo de restablecimiento y disparo fijo
50R2002 190-240 V CA Retardo de restablecimiento variable y disparo fijo (manual, 2-300 s)
50R2003 190-240 V CA Retardo de activación variable y restablecimiento fijo (2-30 s)
50R20029 190-240 V CA Retardo de restablecimiento variable y activación fija (manual, 2-300 s) más detección de voltaje alto
50R400 380-480 V CA Retardo de restablecimiento y disparo fijo
50R4002 380-480 V CA Retardo de restablecimiento variable y disparo fijo (manual, 2-300 s)
50R4003 380-480 V CA Retardo de activación variable y restablecimiento fijo (2-30 s)
50R40029 380-480 V CA Retardo de restablecimiento variable y activación fija (manual, 2-300 s) más detección de voltaje alto
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 6.
©2018 Controladores y Relevadores de Protección de Littelfuse 189
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Características de entrada
Voltaje de línea
50R-100 95-120 V CA
50R200 190-240 V CA
50R400 380-480 V CA
Frecuencia 50*/60 Hz
Características funcionales
Voltaje bajo:
Activación (% del punto de ajuste) 90 %
Restablecimiento
(% del punto de ajuste) 93 %
Tiempo de retardo (Nominal)
Activación 4 s
Restablecimiento (voltaje bajo) 2 s
Restablecimiento
(pérdida total de energía) 2 s
Características de salida
Clasificación nominal de
contacto de salida
(SPDT - 1 Forma C)
50R-100, 50R200
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
50R400
Capacidad experimental 470 VA a 600 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Potencia de entrada máxima 5 W
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Terminal
Torque 7 libras por pulgada
Tamaño del cable 12-18 AWG
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, controles y potencia de
entrada de 3,5 kV
Protección contra rápidos
transitorios eléctricos (Interno) IEC 61000-4-5;1995 ± 6 kV
Marcas de seguridad
UL UL508 (Archivo #E68520)
CE IEC 60947-6-2
Dimensiones H 74,4 mm (2,93"); A 133,9 mm (5,27");
P 74,9 mm (2,95")
Peso 0,44 kg (15,68 oz; 0,98 lb)
Método de montaje tornillos n.º 8
SERIE 50R
Opciones especiales
Opción 2: Retardo de
restablecimiento variable Manual, 2-300 s
Opción 3: Retardo de
disparo variable 2-30 s
Opción 9: Voltaje alto
Detección de puntos
de funcionamiento
Activación (% del punto de ajuste) 110 %
Restablecimiento
(% del punto de ajuste) 107 %
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
www.littelfuse.com/50r
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
190 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/201xxxsp
Descripción
La serie 201-xxx-SP es un monitor de voltaje con conector de base
octal de 8 pines diseñado para proteger motores monofásicos
independientemente de su tamaño. El 201-100-SP se utiliza en motores
95-120 V CA, 50/60 Hz para prevenir daños ocasionados por un voltaje
bajo. El 201-200-SP se utiliza en motores 190-240 V CA, 50/60 Hz. El
201-200-SP-T-9 es un remplazo pin a pin para un monitor de voltaje serie
n.º 260 Time Mark®. La protección de voltaje alto se incluye en la serie
201-200-SP-T-9.
El circuito de detección de voltaje y de voltaje basado en
microprocesador único en su clase monitorea constantemente el voltaje
para detectar condiciones peligrosas en la línea de alimentación. Al
detectar una condición peligrosa, el relevador de salida de MotorSaver
se desactiva luego de cumplirse el retardo de disparo definido. El
relevador de salida se reactiva luego de que las condiciones de la línea
de alimentación regresen a un nivel aceptable y haya transcurrido un
lapso de tiempo determinado (retardo de restablecimiento). El retardo
de restablecimiento previene los disparos perjudiciales ante condiciones
de líneas de alimentación rápidamente variables.
Para clasificación de UL, debe utilizarse con conector modelo OT08PC.
Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores Octal Serie OT y
Serie RB es de 1,356 Nm (12 in-lb).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante del voltaje para detectar condiciones
peligrosas en la línea de alimentación, incluso antes de
encender el motor.
Retardo de disparo fijo de 4 s Previene los disparos perjudiciales ante condiciones de
líneas de alimentación rápidamente variables.
Indicación LED avanzada Proporciona diagnósticos que pueden utilizarse para
resolver problemas y determinar el estado de un relevador
Diseño compacto para
montaje en riel DIN o en
superficie de 8 pines
Brinda flexibilidad en la instalación de panel
Accesorios
Conector octal de 8 pines OT08PC
Conector octal para unidades de conexión directa.
Montable en riel DIN y superficie de 8 pines.
Clasificación nominal para 10 A a 600 V CA.
Monitor de fase/voltaje monofásico
SERIE 201-XXX-SP
Diagrama de conexiones
SECUENCIA DE CONEXIÓN 1
(201-XXX-SP)
(vista del conector)
SECUENCIA DE CONEXIÓN 2
(201-200-SP-T-9)
(vista del conector)
TYPICAL WIRING DIAGRAM FOR MODEL 201-SP
WITH MOTOR CONTROL
MANUAL DETENER INICIAR
APAGAR
CONTACTO PRINCIPAL
CONECTOR OCTAL
CONTROL DE
ALIMENTACIÓN
POTENCIA DE
ENTRADA
CONTACTOR
MAGNÉTICO
AUTOMÁTICO
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
201-100-SP 95-120 V CA SPDT, protege los motores monofásicos
201-200-SP 190-240 V CA SPDT, protege los motores monofásicos
201-200-SP-T-9 190-240 V CA SPDT, reemplazo directo para unidades de
serie n.º 260 Time Mark®
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
©2018 Controladores y Relevadores de Protección de Littelfuse 191
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Características de entrada
Voltaje de línea:
201-100-SP 95-120 V CA
201-200-SP, 201-200-SP-T-9 190-240 V CA
Frecuencia 50/60 Hz
Características funcionales
Voltaje bajo (% del punto de ajuste)
Activación 90 %
Restablecimiento 93 %
Solo para 201-200-SP-T-9:
Voltaje alto (% del punto de ajuste)
Activación 110 %
Restablecimiento 107 %
Tiempo de retardo de disparo:
fallas por voltaje alto/bajo 4 s
Tiempo de retardo de restablecimiento:
Luego de una falla 2 s
Luego de una pérdida total
de energía 2 s
Características de salida
Clasificación nominal de
contacto de salida (SPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
SERIE 201-XXX-SP
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Potencia de entrada máxima 5 W
Protección contra transitorios
eléctricos (Interno) 2500 V para 10 ms
Marcas de seguridad
UL (conector octal OT08PC
requerido) UL508 (Archivo #E68520)
CE IEC 60947-6-2
Dimensiones H 44,45 mm (1,75"); A 60,325 mm (2,375");
P 104,775 mm (4,125") (con conector)
Peso 362,87 g (12,8 oz; 0,8 lb)
Método de montaje Montaje en riel DIN o en superficie
(conectar en conector OT08PC)
Conector disponible Modelo OT08PC (clasificación de UL 600 V)
El conector de 600 V puede estar montado en superficie o instalado en riel DIN.
www.littelfuse.com/201xxxsp
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
192 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/201xxxspdpdt
Descripción
La serie 201-xxx-SP-DPDT es un monitor de voltaje con conector de
base octal de 8 pines diseñado para proteger motores monofásicos
independientemente de su tamaño. El 201-100-SP se utiliza en motores
95-120 V CA, 50/60 Hz para prevenir daños ocasionados por un voltaje
bajo. 201-100-SP se utiliza en motores 190-240 V CA, 50/60 Hz. Las
unidades incluyen dos kit de contactos aislados ideales para utilizar con
circuitos de dos controles y voltajes diferentes.
El circuito de detección de voltaje y de voltaje basado en
microprocesador único en su clase monitorea constantemente el
voltaje para detectar condiciones peligrosas en la línea de alimentación.
Al detectar una condición peligrosa, los relevadores de salida de
MotorSaver se desactivan luego de cumplirse el retardo de disparo
definido. Los relevadores de salida se reactivan luego de que las
condiciones de la línea de alimentación regresen a un nivel aceptable
y haya transcurrido un lapso de tiempo determinado (retardo de
restablecimiento). El retardo de restablecimiento previene los disparos
perjudiciales ante condiciones de líneas de alimentación rápidamente
variables.
Para clasificación de UL, debe utilizarse con conector modelo OT08PC.
Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores Octal Serie OT y
Serie RB es de 1,356 Nm (12 in-lb).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado
en microcontrolador del
propietario
Monitoreo constante del voltaje para detectar condiciones
peligrosas en la línea de alimentación, incluso antes de
encender el motor.
Retardo de disparo fijo de 4 s Previene los disparos perjudiciales ante condiciones de
líneas de alimentación rápidamente variables.
Indicación LED avanzada Proporciona diagnósticos que pueden utilizarse para
resolver problemas y determinar el estado de un relevador
Diseño compacto para
montaje en riel DIN o en
superficie de 8 pines
Brinda flexibilidad en la instalación de panel
Accesorios
Conector octal de 8 pines OT08PC
Conector octal para unidades de conexión directa.
Montable en riel DIN y superficie de 8 pines.
Clasificación nominal para 10 A a 600 V CA.
Monitor de fase/voltaje monofásico
SERIE 201-XXX-SP-DPDT
Diagrama de conexiones
CONECTOR OCTAL
INICIAR MANUAL DETENER
APAGAR
CONTACTO PRINCIPAL
LUZ ALARMA
AUTO
CONTACTOR
MAGNÉTICO
POTENCIA
DE ENTRADA CONTROL DE ALIMENTACIÓN
CONTROL DE
ALIMENTACIÓN
Información para pedir
MODELO VOLTAJE DE
ENTRADA DESCRIPCIÓN
201-100-SP-DPDT 95-120 V CA Dos relevadores Forma C aislados
201-200-SP-DPDT 190-240 V CA Dos relevadores Forma C aislados
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
©2018 Controladores y Relevadores de Protección de Littelfuse 193
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Características de entrada
Voltaje de línea:
201-100-SP-DPDT 95-120 V CA
201-200-SP-DPDT 190-240 V CA
Frecuencia 50/60 Hz
Características funcionales
Voltaje bajo (% del punto de ajuste):
Activación 90 % +/-1 %
Restablecimiento 93 % +/-1 %
Tiempos de retardo de disparo:
Voltaje bajo 4 s
Tiempos de retardo de restablecimiento:
Luego de una pérdida
total de energía o falla 2 s
Características de salida
Clasificación nominal de contacto de salida (DPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
Características generales
Rango de temperatura ambiente:
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Potencia de entrada máxima 5 W
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
SERIE 201-XXX-SP-DPDT
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia,
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, controles y potencia de
entrada de 3,5 kV
Marcas de seguridad
UL (conector octal OT08PC
requerido) UL508 (Archivo #E68520)
CE IEC 60947-6-2
Dimensiones H 44,45 mm (1,75"); A 60,325 mm (2,375");
P 104,775 mm (4,125") (con conector)
Peso 294,84 g (10,4 oz; 0,65 lb)
Método de montaje Montaje en riel DIN o en superficie
(conectar en conector OT08PC)
Conector disponible Modelo OT08PC (clasificación de UL 600 V)
El conector de 600 V puede estar montado en superficie o instalado en riel DIN
www.littelfuse.com/201xxxspdpdt
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
194 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/202200sp
Descripción
El monitor de voltaje serie 202-200-SP está diseñado para proteger
motores monofásicos independientemente de su tamaño. Puede
utilizarse con motores de 190 V-240 V CA, 50/60 Hz para prevenir daños
ocasionados por problemas de energía entrante.
Un circuito de detección de voltaje y de voltaje basado en
microprocesador único en su clase monitorea el voltaje para detectar
condiciones peligrosas en la línea de alimentación. Al detectar una
condición peligrosa, el relevador de salida de MotorSaver se desactiva
luego de cumplirse el retardo de disparo definido. El relevador
de salida se reactiva luego de que las condiciones de la línea de
alimentación regresen a un nivel aceptable y haya transcurrido un lapso
de tiempo determinado (retardo de restablecimiento). El retardo de
restablecimiento previene los disparos perjudiciales ante condiciones de
líneas de alimentación rápidamente variables.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante del voltaje para detectar condiciones
peligrosas en la línea de alimentación, incluso antes de
encender el motor
Retardo de disparo fijo de 4 s Previene los disparos perjudiciales ante condiciones de
líneas de alimentación rápidamente variables.
Retardo de restablecimiento
ajustable (Manual, 2-300 s)
Permite el accionamiento escalonado de múltiples
motores, luego de una falla, para prevenir una condición de
voltaje bajo
Indicación LED avanzada Proporciona diagnósticos que pueden utilizarse para
resolver problemas y determinar el estado de un relevador
Montaje con un solo tornillo
y terminales de conexión
rápida estándar de 1/4"
Instalación fácil y diseño compacto ideal para ensamble en
panel o aplicaciones de fabricantes originales
Monitor de voltaje monofásico
SERIE 202-200-SP
Diagrama de conexiones
DETENER
POTENCIA
DE ENTRADA
VOLTAJE
DE CONTROL
MANUAL 240 V CA MÁX.
INICIAR
AUTOMÁTICO
APAGAR
POTENCIA DE ENTRADA
ALARMA 240 V CA
MÁX.
POTENCIA
DE ALARMA
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELOS 202-200-SP
CON CONTROL DE MOTOR
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELOS 202-200-SP
CON CONTROL DE ALARMA
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
202-200-SP 190-240 V CA SPDT, protección contra voltaje alto y bajo
202-200-SP-NHV 190-240 V CA SPDT, protección contra voltaje bajo
solamente
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 7.
©2018 Controladores y Relevadores de Protección de Littelfuse 195
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/202200sp
Especificaciones
Características de entrada
Voltaje de línea:
202-200-SP, 202-200-SP-NHV 190-240 V CA
Frecuencia 50*/60 Hz
Características funcionales
Voltaje bajo (% del punto de ajuste)
Activación 90 %
Restablecimiento 93 %
Voltaje alto (% del punto de ajuste)
(no disponible en modelos -NHV)
Activación 110 %
Restablecimiento 107 %
Tiempo de retardo de disparo:
Voltaje bajo y alto 4 s
Tiempo de retardo de
restablecimiento:
Luego de una pérdida total
de energía o falla Manual, ajuste de 2-300 s.
Características de salida
Clasificación nominal de contacto de salida (SPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
SERIE 202-200-SP
Características generales
Rango de temperatura -40 °C a 70 °C (-40 °F a 158 °F)
Exactitud de activación y
restablecimiento ± 1 %
Repetibilidad ± 0,5 %
Entrada a dieléctrico de salida 1480 Vrms (mín.)
Terminación Conector rápido macho de 6,35 mm (0,25")
Potencia de entrada máxima 5 W
Humedad relativa 95 %, sin condensación
Protección contra transitorios
eléctricos IEC 61000-4-5, ± 4 kV
Marcas de seguridad
Reconocimiento UL,
o certificado UL UL508 (Archivo #E68520)
Dimensiones H 63,5 mm (2,5"); A 63,5 mm (2,5");
P 35,56 mm (1,4")
Peso 0,22 kg (8 oz; 0,5 lb)
Método de montaje Tornillo de cabeza plana con hueco hexagonal
de 1/4" (provisto por el usuario)
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
196 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/460xxxsp
Descripción
La serie 460-100-SP se utiliza en motores monofásicos de 95-120 V CA,
50*/60 Hz y la serie 460-200-SP se utiliza en motores monofásicos
de 190-240 V CA, 50*/60 Hz para protegerlos contra daños por
condiciones de voltaje alto y bajo. Una perilla de ajuste permite al
usuario definir retardos de restablecimiento de 1 a 500 s. El retardo
de restablecimiento variable también opera como un retardo de
alimentación y puede utilizarse para iniciar escalonadamente motores en
el mismo sistema.
Un circuito de detección de voltaje y de voltaje basado en
microprocesador único en su clase monitorea constantemente el voltaje
para detectar condiciones peligrosas en la línea de alimentación. Al
detectar una condición peligrosa, el relevador de salida de MotorSaver
se desactiva luego de cumplirse el retardo de disparo definido. El
relevador de salida se reactiva luego de que las condiciones de la línea
de alimentación regresen a un nivel aceptable y haya transcurrido un
lapso de tiempo determinado (retardo de restablecimiento). El retardo
de restablecimiento previene los disparos perjudiciales ante condiciones
de líneas de alimentación rápidamente variables.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado
en microcontrolador del
propietario
Monitoreo constante del voltaje para detectar condiciones
peligrosas en la línea de alimentación, incluso antes de
encender el motor
Retardo de disparo fijo de 4 s Previene los disparos perjudiciales ante condiciones de
líneas de alimentación rápidamente variables.
Retardo de restablecimiento
ajustable (1-500 s)
Permite el accionamiento escalonado de múltiples motores
en el mismo sistema para prevenir una condición de voltaje
bajo
Indicación LED avanzada Proporciona diagnósticos que pueden utilizarse para
resolver problemas y determinar el estado de un relevador
Montable en riel DIN y
superficie Brinda flexibilidad para ensamble en panel
Monitor de voltaje monofásico
SERIE 460-XXX-SP
Diagrama de conexiones
CONTACTO PRINCIPAL
INICIAR MANUAL DETENER
AUTO CONTACTOR MAGNÉTICO
POTENCIA
DE ENTRADA
APAGAR
CONTROL DE ALIMENTACIÓN
DE 24 A 240 V CA
Información para pedir
MODELO VOLTAJE DE LÍNEA
460-100-SP 95-120 V CA
460-200-SP 190-240 V CA
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 10.
©2018 Controladores y Relevadores de Protección de Littelfuse 197
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Características de entrada
Voltaje de línea
460-100-SP 95-120 V CA
460-200-SP 190-240 V CA
Frecuencia 50*/60 Hz
Características funcionales
Voltaje bajo (% del punto de ajuste):
Activación 90 % ± 1 %
Restablecimiento 93 % ± 1 %
Voltaje alto (% del punto de ajuste)
Activación 110 % ± 1 %
Restablecimiento 107 % ± 1 %
Tiempo de retardo de disparo
Voltaje alto o bajo 4 s fijo
Tiempo de retardo de restablecimiento
Luego de una falla Ajustable de 1 a 500 s
Luego de una pérdida total
de energía Ajustable de 1 a 500 s
Características de salida
Clasificación nominal de
contacto de salida
(1 Forma C)
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 10 A a 240 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Potencia de entrada máxima 6 W
Clase de protección IP20, NEMA 1 (seguro para manipular)
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque de terminal 0,51 Nm (4,5 in-lb).
Tipo de cable Trenzado o sólido 12-20 AWG, uno por terminal
SERIE 460-XXX-SP
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia,
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, controles y potencia de
entrada de 3,5 kV
Sobretensión
IEC IEC 61000-4-5, Nivel 3, 4 kV línea a línea;
Nivel 4, línea a tierra de 4 kV
ANSI/IEEE Conformidad con onda oscilatoria y sobretensión a
un nivel de línea a línea de 6 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Marcas de seguridad
UL UL508 (Archivo #E68520)
CE IEC 60947-6-2
Carcasa Policarbonato
Dimensiones H 88,9 mm (3,5"); A 52,93 mm (2,084");
P 59,69 mm (2,35")
Peso 408,23 g (14,4 oz; 0,9 lb)
Método de montaje Riel DIN de 35 mm o montaje en superficie
(tornillos n.º 6 o n.º 8)
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
www.littelfuse.com/460xxxsp
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
198 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/102a
Descripción
La serie 102A es un monitor de voltaje de doble rango, rango
automático y trifásico que protege motores de 190-400 V CA, 50/60 Hz
independientemente de su tamaño. El producto proporciona un punto
de ajuste de voltaje nominal seleccionable por el usuario y el monitor de
voltaje selecciona automáticamente entre el rango de 200 V a 400 V.
Un circuito de detección de voltaje de fase y de voltaje basado en
microprocesador único en su clase monitorea los voltajes trifásicos
para detectar condiciones peligrosas en la línea de alimentación. Al
detectar una condición peligrosa, el relevador de salida se desactiva
luego de cumplirse el retardo de disparo definido. El relevador de salida
se reactiva luego de que las condiciones de la línea de alimentación
alcancen niveles aceptables. El modelo 102A incluye diagnósticos LED
individuales avanzados. Cinco patrones de luces diferentes clasifican
entre condiciones normales y de falla.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante de condiciones de voltaje
monofásico, voltaje bajo, voltaje alto (102A-9), desbalance
de voltaje, inversión de fase y línea de alimentación
peligrosa.
Rango de voltaje amplio con
detección automática
Detecta automáticamente el voltaje del sistema entre
190-480 V CA. Ahorra tiempo de configuración.
Diagnósticos por LED
avanzados
Indicador visual rápido sobre causas de la activación. Las
indicaciones por LED incluyen: funcionamiento normal,
retardo de restablecimiento de puesta en marcha,
activación de inversión de fase, activación de fase
individual/desbalance, activación por voltaje alto o bajo
Retardo de activación
ajustable (102A2)
Previene las activaciones falsas ante condiciones de líneas
de alimentación rápidamente variables.
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
102A 190-480 V CA Retardo de activación por voltaje bajo fijo (4 seg.),
retardo de restablecimiento fijo (2 seg.)
102A2 190-480 V CA Cuenta con función de retardo de restablecimiento
variable (manual o ajustable de 2 a 300 seg.)
102A3 190-480 V CA
Incluye función de retardo de disparo ajustable
de 2 a 30 seg. (retardos de activación por fase y
desbalance en 2 s).
102A-9 190-480 V CA
Tiene protección contra voltaje alto. La activación
por voltaje alto es del 110 % del punto de ajuste,
el restablecimiento es del 107 % del punto
de ajuste.
102600 475-600 V CA Retardo de activación por voltaje bajo fijo (4 seg.),
retardo de restablecimiento fijo (2 seg.)
Monitor de fase/voltaje trifásico
SERIE 102A
Diagrama de conexiones
102 CON CONTROL DE MOTOR
102 CON CONTROL DE ALARMA
AUTOMÁTICO CONTACTO PRINCIPAL
DETENER
APAGAR
MANUAL INICIAR
CONTACTOR
MAGNÉTICO
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
CONTACTOR
MAGNÉTICO
POTENCIA
DE ENTRADA CONTROL DE ALIMENTACIÓN
ALARMA
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 6.
©2018 Controladores y Relevadores de Protección de Littelfuse 199
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Frecuencia 50*/60 Hz
Características funcionales
Voltaje bajo (% del punto de ajuste)
Activación 90 %
Restablecimiento 93 %
Desbalance de voltaje (NEMA)
Activación 6 %
Restablecimiento 4,5 %
Tiempo de retardo de disparo
Voltaje alto/bajo 4 s (estándar)
Averías por desbalance y
corriente entre fases 2 s
Tiempo de retardo de
restablecimiento
Luego de una falla 2 s (estándar)
Luego de una pérdida total de energía 2 s (estándar)
Características de salida
Clasificación nominal de contacto
de salida (SPDT - 1 Forma C)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
SERIE 102A
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Exactitud de activación y
restablecimiento ± 1 %
Potencia de entrada máxima 5 W
Terminal
Torque 7 libras por pulgada
Tamaño del cable 12-18 AWG
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto 6 kV, aéreo 8 kV
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, entrada de 4 kV
salida/entrada de 2 kV
Protección contra rápidos
transitorios eléctricos (Interno) IEC 61000-4-5; 1995 ± 6 kV
Marcas de seguridad
UL UL508 (Archivo #E68520)
CSA 22.2 Nro. 14 (Archivo #46510)
CE IEC 60947-6-2
Dimensiones H 74,4 mm (2,93"); A 133,9 mm (5,27");
P 74,9 mm (2,95")
Peso 476,27 g (16,8 oz; 1,05 lb)
Método de montaje Tornillos n.º 8
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
www.littelfuse.com/102a
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
200 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/201a
Descripción
La serie 201A es un monitor de voltaje de doble rango, rango
automático y trifásico que protege motores de 190-480 V CA, 50/60 Hz
independientemente de su tamaño. El producto proporciona un punto
de ajuste de voltaje nominal seleccionable por el usuario y el monitor
de voltaje selecciona automáticamente entre el rango de 200 V a 400 V.
El 201A incluye diagnósticos por LED individuales avanzados, donde los
patrones de color e iluminación clasifican entre condiciones normales y
de falla.
Este circuito de detección de voltaje de fase y de voltaje basado en
microprocesador único en su clase monitorea los voltajes trifásicos
para detectar condiciones peligrosas en la línea de alimentación. Al
detectar una condición peligrosa, el relevador de salida del 201A se
desactiva luego de cumplirse el retardo de disparo definido. El relevador
de salida se reactiva luego de que las condiciones de la línea de
alimentación alcancen niveles aceptables para un tiempo de retardo de
restablecimiento especificado.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante de condiciones de voltaje
monofásico, voltaje bajo, desbalance de voltaje, inversión
de fase y línea de alimentación nociva. Monitoreo de
voltaje alto opcional.
Diseño compacto para
montaje en riel DIN o en
superficie de 8 pines
Brinda flexibilidad en la instalación del panel
Rango de voltaje amplio con
detección automática
Detecta automáticamente el voltaje del sistema entre
190-480 V CA. Ahorra tiempo de configuración.
Diagnósticos por LED
avanzados
Indicador visual rápido sobre causas de la activación. Las
indicaciones por LED incluyen: funcionamiento normal,
retardo de restablecimiento de puesta en marcha, disparo
de inversión de fase, activación de fase individual/
desbalance, activación por voltaje alto o bajo
Accesorios
Conector octal de 8 pines OT08PC
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 600 V CA.
Montaje en superficie con dos tornillos o anillos de
presión n.º 6 en un riel DIN de 35 mm.
Monitor de fase/voltaje trifásico
SERIE 201A
Diagrama de conexiones
201A CON CONTROL DE MOTOR
201A CON CONTROL DE ALARMA POTENCIA DE ENTRADA CONTROL DE ALIMENTACIÓN
CONECTOR OCTAL
CONECTOR OCTAL
LUZ ALARMA
AUTOMÁTICO
MANUAL DETENER
APAGAR
INICIAR
CONTACTO PRINCIPAL
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
CONTACTOR
MAGNÉTICO
CONTACTOR
MAGNÉTICO
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
CONECTOR OCTAL
CONECTOR OCTAL
LUZ ALARMA
AUTOMÁTICO
MANUAL DETENER
APAGAR
INICIAR
CONTACTO PRINCIPAL
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
CONTACTOR
MAGNÉTICO
CONTACTOR
MAGNÉTICO
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
201A 190-480 V CA Montable en riel DIN y superficie
201A-9 190-480 V CA Incluye detección de voltaje alto. Montable en riel
DIN y superficie
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
©2018 Controladores y Relevadores de Protección de Littelfuse 201
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Frecuencia 50/60 Hz
Características funcionales
Voltaje bajo (% del punto de ajuste)
Activación 90 % ± 1 %
Restablecimiento 93 % ± 1 %
Desbalance de voltaje (NEMA)
Activación 6 %
Restablecimiento 4,5 %
Voltaje alto opcional
(% del punto de ajuste)
Activación 110 % ± 1 %
Restablecimiento 107 % ± 1 %
Tiempo de retardo de disparo
fallas por voltaje alto/bajo 4 s
Averías por desbalance y
corriente entre fases 2 s
Tiempo de retardo de
restablecimiento
Luego de una falla 2 s
Luego de una pérdida total
de energía 2 s
Características de salida
Clasificación nominal de
contacto de salida (SPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
Características generales
Rango de temperatura -20 °C a 70 °C (-4 °F a 158 °F)
Exactitud de activación y
restablecimiento ± 1 %
Potencia de entrada máxima 5 W
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque del terminal 1,356 Nm (12 in-lb) (para conector OT08-PC)
Calibre del cable Sólido o trenzado 12-22 AWG
Protección contra rápidos
transitorios eléctricos (Interno) 2500 V para 10 ms
SERIE 201A
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo
8 kV
Inmunidad a radiofrecuencia,
(RFI) Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, controles y potencia de
entrada de 3,5 kV
Sobretensión
Inmunidad IEC IEC 61000-4-5, Nivel 3, línea a línea de 4 kV;
Nivel 4, línea a tierra de 4 kV
ANSI/IEEE Conformidad con onda oscilatoria y sobretensión
al nivel de línea a línea de 6 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Marcas de seguridad
UL (conector octal OT08PC
requerido) UL508 (Archivo #E68520)
CE IEC 60947-6-2
Dimensiones H 44,45 mm (1,75"); A 60,33 mm (2,38");
P (con conector) 104,78 mm (4,13")
Peso 0,3 kg (11,2 oz; 0,7 lb)
Método de montaje Montaje en riel DIN o en superficie
(conectar en conector OT08PC)
Conector disponible Modelo OT08PC (clasificación de UL 600 V)
El conector de 600 V puede estar montado en superficie o instalado en riel DIN.
Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores octales Serie OT
es de 1,356 Nm (12 in-lb).
Para clasificación de UL, debe utilizarse con conector modelo OT08PC.
www.littelfuse.com/201a
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
202 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/201aau
Descripción
La serie 201A-AU es un monitor de voltaje de doble rango, rango
automático y trifásico que protege motores de 190-480 V CA, 50/60 Hz
independientemente de su tamaño. El producto proporciona un punto
de ajuste de voltaje nominal seleccionable por el usuario y el monitor
de voltaje selecciona automáticamente entre el rango de 200 V a
400 V. Las perillas de ajuste adicionales permiten al usuario definir un
retardo de disparo de 1 a 30 s, un restablecimiento manual o retardo de
restablecimiento de 1 a 500 s, y un punto de activación por desbalance
de voltaje de 2 % a 8 %. El modelo 201A-AU incluye diagnósticos por
LED individuales avanzados, donde los patrones de color e iluminación
clasifican entre condiciones normales y de falla.
Este circuito de detección de voltaje de fase y de voltaje basado en
microprocesador único en su clase monitorea los voltajes trifásicos para
detectar condiciones peligrosas en la línea de alimentación. Al detectar
una condición peligrosa, el relevador de salida del 201A-AU se desactiva
luego de un retardo de disparo definido. El relevador de salida se reactiva
luego de que las condiciones de la línea de alimentación alcancen niveles
aceptables para una cantidad o tiempo de retardo de restablecimiento (o
restablecimiento manual) especificados.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante de pérdidas en cualquier
condición de fase, voltaje bajo, voltaje alto,
desbalance de voltaje, inversión de fase, ciclo rápido,
o línea de alimentación peligrosa.
Diseño compacto para
montaje en riel DIN o en
superficie de 8 pines
Brinda flexibilidad en la instalación del panel
Rango de voltaje amplio
con detección automática
Detecta automáticamente el voltaje del sistema entre
190-480 V CA. Ahorra tiempo de configuración.
Diagnósticos por LED
avanzados Indicador visual rápido sobre causas de la activación.
Configuración ajustable
del disparo por
desbalance de voltaje
Brinda compatibilidad con varios tipos de motor y
reduce las activaciones falsas.
Configuración ajustable
de retardo de disparo y
restablecimiento
Previene las activaciones falsas ante condiciones de
líneas de alimentación rápidamente variables.
Accesorios
Conector octal de 8 pines OT08PC
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 600 V CA.
Montaje en superficie con dos tornillos o anillos de
presión n.º 6 en un riel DIN de 35 mm.
Información para pedir
MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN
201A-AU 190-480 V CA Montable en riel DIN y superficie
201575-AU 475-600 V CA Montable en riel DIN y superficie
201A-AU-OT 190-480 V CA Se vende con conector OT08PC
201-575-AU-OT 475-600 V CA Se vende con conector OT08PC
Monitor de fase/voltaje trifásico
SERIE 201A-AU
Diagrama de conexiones
201A-AU CON CONTROL DE MOTOR
201A-AU CON CONTROL DE ALARMA
L2
L1
L3
L2
L1
L3
TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU
WITH MOTOR CONTROL
TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU
WITH ALARM CONTROL
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
AUTOMÁTICO
MANUAL
APAGAR
INICIAR
CONTACTO PRINCIPAL
CONTACTOR
MAGNÉTICO
CONECTOR OCTAL
CONECTOR OCTAL
LUZ ALARMA
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
CONTACTOR
MAGNÉTICO
L2
L1
L3
L2
L1
L3
TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU
WITH MOTOR CONTROL
TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU
WITH ALARM CONTROL
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
AUTOMÁTICO
MANUAL
APAGAR
INICIAR
CONTACTO PRINCIPAL
CONTACTOR
MAGNÉTICO
CONECTOR OCTAL
CONECTOR OCTAL
LUZ ALARMA
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
CONTACTOR
MAGNÉTICO
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
©2018 Controladores y Relevadores de Protección de Littelfuse 203
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Frecuencia 50/60 Hz
Características funcionales
Voltaje bajo (% del punto de ajuste)
Activación 90 % ± 1 %
Restablecimiento 93 % ± 1 %
Voltaje alto (% del punto de ajuste)
Activación 110 % ± 1 %
Restablecimiento 107 % ± 1 %
Desbalance de voltaje (NEMA)
Activación 2-8 % ajustable
Restablecimiento Configuración de activación menos el 1 % (5-8 %)
Configuración de activación menos el 0,5 % (2-4 %)
Tiempo de retardo de disparo
Voltaje alto, bajo y
desbalanceado 1-30 s ajustable
Averías entre fases individuales 1 segundo fijo
Tiempo de retardo de
restablecimiento
Luego de una falla Manual, ajustable de 1 a 500 s
Luego de una pérdida total
de energía Manual, ajustable de 1 a 500 s
Características de salida
Clasificación nominal de contacto
de salida (1 Forma C)
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 10 A a 240 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Exactitud de activación y
restablecimiento ± 1 %
Potencia de entrada máxima 5 W
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque del terminal 1,356 Nm (12 in-lb) (para conector OT08-PC)
Calibre del cable Sólido o trenzado 12-22 AWG
SERIE 201A-AU
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo
8 kV
Inmunidad a radiofrecuencia
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada
y controles de 3,5 kV
Sobretensión
IEC IEC 61000-4-5, Nivel 3, 4 kV línea a línea;
Nivel 4, línea a tierra de 4 kV
ANSI/IEEE Conformidad con onda oscilatoria y sobretensión
al nivel de línea a línea de 6 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Marcas de seguridad
UL (conector octal OT08PC
requerido) UL508 (Archivo #E68520)
CE IEC 60947-6-2
Carcasa Policarbonato
Dimensiones H 44,45 mm (1,75"); A 60,325 mm (2,375");
P 104,775 mm (4,125") (con conector)
Peso 0,3 kg (11,2 oz; 0,7 lb)
Método de montaje Montaje en riel DIN o en superficie
(conectar en conector OT08PC)
Conector disponible OT08PC (clasificación de UL 600 V)
El conector de 600 V puede estar montado en superficie o instalado en riel DIN.
Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores octales Serie OT
es de 1,356 Nm (12 in-lb).
Para clasificación de UL, debe utilizarse con conector modelo OT08PC.
www.littelfuse.com/201aau
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
204 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/201xxxdpdt
Descripción
La serie 201-xxx-DPDT es un monitor de voltaje con conector de
base octal de 11 pines diseñado para proteger motores trifásicos
independientemente de su tamaño. La serie 201-100-DPDT se utiliza en
motores de 95-120 V CA, 50/60 Hz y la serie 201-200-DPDT se utiliza en
motores de 190-240 V CA, 50/60 Hz para prevenir daños por problemas
de voltaje potenciales. Las unidades incluyen dos kit de contactos
aislados ideales para utilizar con circuitos de dos controles y voltajes
diferentes.
El circuito de detección de fases y voltajes basado en microprocesador
monitorea constantemente los voltajes para detectar condiciones de
línea de alimentación peligrosas. Cuando se identifica una condición
nociva los relevadores de salida de MotorSaver son desactivados
luego de un retardo de disparo especificado. Los relevadores de
salida se reactivan luego de que las condiciones de la línea de
alimentación regresen a un nivel aceptable y haya transcurrido un lapso
de tiempo determinado (retardo de restablecimiento). El retardo de
restablecimiento previene los disparos perjudiciales ante condiciones de
líneas de alimentación rápidamente variables.
Esta unidad también está disponible con un retardo de disparo más
corto y un retardo de restablecimiento más rápido. La serie 201-xxxDPDT-60mS tiene un retardo de disparo de 0,5 s y un retardo de
restablecimiento de 60 milisegundos.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitorea constantemente el voltaje trifásico para
proteger contra condiciones de línea de alimentación
peligrosas, incluso antes del encendido.
Diseño compacto para
montaje en riel DIN o en
superficie de 8 pines
Brinda flexibilidad en la instalación de panel
Indicación LED avanzada Proporciona diagnósticos que pueden utilizarse para
resolver problemas y determinar el estado de un relevador
Dos relevadores Forma C
aislados (DPDT)
Ideal para utilizar en sistemas que tengan dos circuitos de
control con voltajes diferentes
Accesorios
Conector octal OT11PC
Montable en riel DIN y superficie de 11 pines.
Clasificación nominal para 10 A a 300 V CA.
Monitor de fase/voltaje trifásico
SERIE 201-XXX-DPDT
Diagrama de conexiones
4 4
1
1
8 8
9
9
10
10
11
11
5 5
3
3
2
2
6
6 7 7
POTENCIA DE
ENTRADA
L3 L2 L1
LUZ
POTENCIA DE
ENTRADA
POTENCIA DE
ENTRADA
ALARMA CONECTOR
AUTOMÁTICO
MANUAL DETENER
APAGAR
INICIAR
CONTACTO PRINCIPAL
CONTACTOR
MAGNÉTICO
Información para pedir
MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN
201-100-DPDT 95-120 V CA Desbalance fijo, retardo de disparo de 4 s para fallas de voltaje y 2 s para
pérdida de fase y desbalance, retardo de restablecimiento de 2 s.
201-200-DPDT 190-240 V CA Desbalance fijo, retardo de disparo de 4 s para fallas de voltaje y 2 s para
pérdida de fase y desbalance, retardo de restablecimiento de 2 s.
201-100-DPDT-60mS 95-120 V CA Desbalance fijo, retardo de disparo de 0,5 s, retardo de restablecimiento de
60 ms
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 8.
©2018 Controladores y Relevadores de Protección de Littelfuse 205
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Características de entrada
Voltaje de línea
201-100-DPDT,
201-100-DPDT-60mS 95-120 V CA
201-200-DPDT,
201-200-DPDT-60mS 190-240 V CA
Frecuencia 50/60 Hz
Características funcionales
Voltaje bajo
(% del punto de ajuste)
Activación 90 % +/-1 %
Restablecimiento 93 % +/-1 %
Desbalance de voltaje
Activación 6 %
Restablecimiento 4,5 %
Tiempos de retardo de disparo
Voltaje bajo 4 s
Averías por desbalance y
corriente entre fases 2 s
Modelos con opción de -60 ms 0,5 s
Tiempos de retardo de restablecimiento
Luego de una pérdida
total de energía o falla 2 s
Modelos con opción de -60 ms 60 milis
Características de salida
Clasificación nominal de
contacto de salida (DPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
SERIE 201-XXX-DPDT
Características generales
Rango de temperatura -40 °C a 70 °C (-40 °F a 158 °F)
Potencia de entrada máxima 5 W
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a
radiofrecuencia, Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 2,5 kV
Marcas de seguridad
UL (conector octal OT11PC
requerido) UL508 (Archivo #E68520)
CE IEC 60947-6-2
Dimensiones H 44,45 mm (1,75"); A 60,33 mm (2,38");
P 104,78 mm (4,125")
Peso 294,84 g (10,4 oz; 0,65 lb)
Método de montaje Montaje en riel DIN o en superficie (conectar en
conector OT11PC)
Conector disponible Modelo OT11PC (clasificación nominal UL 300 V)
El conector de 300 V puede estar montado en superficie o instalado en riel DIN.
Para clasificación de UL, debe utilizarse con conector modelo OT11PC
*Nota: El torque de los terminales de tornillo recomendado por el fabricante para los conectores Octal Serie OT
y Serie RB es de 1,356 Nm (12 in-lb).
www.littelfuse.com/201xxxdpdt
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
206 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/202
Descripción
La serie 202 es un monitor de voltaje de doble rango, rango
automático, trifásico que protege motores de 190-480 V CA, 50*/60 Hz
independientemente de su tamaño. La serie 202-RP (y la serie 202-
575-RP para 475-600 V CA) monitorea la rotación de fases de sistemas
trifásicos y las activaciones en inversión de fase solamente. Algunas
aplicaciones críticas incluyen motores de ventilador, compresores de
espiral, amoladoras, sistemas de bandas transportadoras, elevadores
y escaleras eléctricas. Ambos productos proporcionan un punto de
ajuste de voltaje nominal seleccionable por el usuario y seleccionan
automáticamente entre el rango de 200 V a 400 V.
Este circuito de detección de voltaje de fase y de voltaje basado en
microprocesador único en su clase monitorea los voltajes trifásicos
para detectar condiciones peligrosas en la línea de alimentación. Al
detectar una condición peligrosa, el relevador de salida de MotorSaver
se desactiva luego de cumplirse el retardo de disparo definido. El
relevador de salida se reactiva luego de que las condiciones de la
línea de alimentación alcancen niveles aceptables para una cantidad o
tiempo de retardo de restablecimiento (o un restablecimiento manual)
especificado. El modelo 202 incluye diagnósticos LED individuales
avanzados. Cinco patrones de luces diferentes clasifican entre
condiciones normales y de falla. Las luces indicadoras de estado color
verde se iluminan y el relevador se activa cuando la rotación es correcta.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto y de
montaje rápido
El montaje con un solo tornillo ahorra tiempo y espacio.
Área de instalación pequeña para ensamble en paneles.
Circuito basado en
microcontrolador del
propietario
Monitoreo constante de condiciones de voltaje
monofásico, voltaje bajo, voltaje alto, desbalance de
voltaje, inversión de fase y línea de alimentación nociva.
Rango de voltaje amplio con
detección automática
(202 y 202-RP)
Detecta automáticamente el voltaje del sistema entre
90-480 V CA. Ahorra tiempo de configuración.
Diagnósticos por LED
avanzados
Indicador visual rápido sobre causas de la activación. Las
indicaciones LED incluyen: funcionamiento normal, retardo
de restablecimiento, activación por inversión de fase, fallas
Retardo de activación
ajustable (202)
Previene las activaciones falsas ante condiciones de líneas
de alimentación rápidamente variables.
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
202 190-480 V CA Protección estándar con activación por voltaje
alto/bajo, desbalance de voltaje
202-RP 190-480 V CA Se activa únicamente en inversión de fase
202-575-RP 475-600 V CA Diseñado para sistemas de voltaje más alto y
disparos en inversión de fase solamente
Monitor de fase/voltaje trifásico
SERIE 202
Diagrama de conexiones
L1
L1
MOTOR
ALARMA
POTENCIA
DE ALARMA
240 V CA MÁXIMA
POTENCIA DE ENTRADA
L2
L2
L3
L3
NC
NO COM
202
OL OL OL
M M M
L1
L1
MOTOR
INICIAR
MANUAL
APAGAR
AUTOMÁTICO
CONTROL DE
VOLTAJE DE
DETENER 240 V CA MÁXIMO
POTENCIA DE ENTRADA
L2
L2
L3
L3
NC
NO COM
202
OL OL OL
M M M OL
M
M
202 CON CIRCUITO DE ALARMA
202 CON CONTROL DE MOTOR
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 7.
©2018 Controladores y Relevadores de Protección de Littelfuse 207
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Frecuencia 50*/60 Hz
Características funcionales
Secuencia de fase ABC
Voltaje bajo (% del punto de ajuste)
Activación 90 %
Restablecimiento 93 %
Voltaje alto (% del punto de ajuste)
Activación 110 %
Restablecimiento 107 %
Desbalance de voltaje (NEMA)
Activación 6 %
Restablecimiento 4,5 %
Tiempo de retardo de disparo
Voltaje bajo y alto 4 s
Averías por desbalance y
corriente entre fases 2 s
Tiempo de retardo de
restablecimiento
Luego de una falla Manual, ajustable de 2 a 300 s
Luego de una pérdida total de energía Manual, ajustable de 2 a 300 s
SERIE 202
Características de salida
Clasificación nominal de
contacto de salida (SPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
Características generales
Rango de temperatura -40 °C a 70 °C (-40 °F a 158 °F)
Exactitud de activación y
restablecimiento ± 1 %
Repetibilidad ± 0,5 %
Potencia de entrada máxima 5 W
Humedad relativa 95 %, sin condensación
Protección contra transitorios
eléctricos IEC 61000-4-5, ± 4 kV
Prueba de alto potencial Conforme con UL508
(2 x V nominal +1000 V por 1 minuto)
Terminación Conector rápido macho de 6,35 mm (0,25")
Marcas de seguridad
Reconocimiento UL UL508 (Archivo #E68520)
Dimensiones H 63,5 mm (2,5"); A 63,5 mm (2,5");
P 35,56 mm (1,4")
Peso 0,22 kg (8 oz; 0,5 lb)
Método de montaje Tornillo de cabeza plana con hueco hexagonal
de 1/4" (provisto por el usuario)
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %. Pendiente de certificación CE
www.littelfuse.com/202
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
208 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/250a
Descripción
La serie 250A es un monitor de voltaje de doble rango, rango
automático y trifásico que protege motores de 190-480 V CA, 50/60 Hz
independientemente de su tamaño. El producto proporciona un punto
de ajuste de voltaje nominal seleccionable por el usuario y el monitor de
voltaje selecciona automáticamente entre el rango de 200 V a 400 V. El
250A además incluye retardo de restablecimiento manual o ajustable.
Este circuito de detección de voltaje de fase y de voltaje basado en
microprocesador único en su clase monitorea los voltajes trifásicos
para detectar condiciones peligrosas en la línea de alimentación. Al
detectar una condición peligrosa, el relevador de salida se desactiva
luego de cumplirse el retardo de disparo definido. El relevador de salida
se reactiva luego de que las condiciones de la línea de alimentación
alcancen niveles aceptables. El modelo 250A incluye diagnósticos LED
individuales avanzados. Cinco patrones de luces diferentes clasifican
entre condiciones normales y de falla.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado
en microcontrolador del
propietario
Monitoreo constante de condiciones de voltaje
monofásico, voltaje bajo, desbalance de voltaje, inversión
de fase y línea de alimentación nociva.
Rango de voltaje amplio con
detección automática
Detecta automáticamente el voltaje del sistema entre
190-480 V CA. Ahorra tiempo de configuración.
Diagnósticos por LED
avanzados
Indicador visual rápido sobre causas de la activación. Las
indicaciones por LED incluyen: funcionamiento normal,
retardo de restablecimiento de puesta en marcha,
activación de inversión de fase, activación de fase
individual/desbalance, activación por voltaje alto o bajo
Salida de relevador DPDT Brinda versatilidad para satisfacer diversas aplicaciones
Restablecimiento manual Permite inspeccionar el equipo antes de que el sistema sea
reenergizado
Monitor de fase/voltaje trifásico
SERIE 250A
Diagrama de conexiones
MODEL 250
CONTACTO PRINCIPAL
ALARMA
INICIAR MANUAL DETENER
AUTO
APAGAR
CONTACTOR
MAGNÉTICO
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
CONTROL DE
ALIMENTACIÓN
Información para pedir
MODELO VOLTAJE DE
LÍNEA
% DEL PUNTO DE AJUSTE
DESCRIPCIÓN ACTIVACIÓN POR
VOLTAJE BAJO
RESTABLECIMIENTO
POR VOLTAJE BAJO
ACTIVACIÓN POR
VOLTAJE ALTO
RESTABLECIMIENTO
POR VOLTAJE ALTO
250A 190-480 V CA 90 % 93 % 110 % 107 % Brinda protección contra voltaje alto y bajo a un porcentaje fijo del voltaje
nominal.
250600 475-600 V CA 90 % 93 % 110 % 107 % Brinda protección contra voltaje alto y bajo a un porcentaje fijo del voltaje
nominal.
250A-MET 190-480 V CA 85 % 88 % N/A N/A
Diseñado para utilizarse con paneles de control de incendios. Tiene 2 contactos
Forma C que operan de manera independiente. El contacto Forma C izquierdo
se energiza cuando las condiciones de voltaje son estables y se desenergiza
cuando se detecta una condición de falla. El contacto Forma C derecho solo
se energiza durante una condición de inversión de fase. No tiene protección
contra voltaje alto.
250-100-MET 95-120 V CA 85 % 88 % N/A N/A
Diseñado para utilizarse con paneles de control de incendios. Tiene 2 contactos
Forma C que operan de manera independiente. El contacto Forma C izquierdo
se energiza cuando las condiciones de voltaje son estables y se desenergiza
cuando se detecta una condición de falla. El contacto Forma C derecho solo
se energiza durante una condición de inversión de fase. No tiene protección
contra voltaje alto.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 6.
©2018 Controladores y Relevadores de Protección de Littelfuse 209
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Frecuencia Voltaje bajo 50*/60 Hz
Características funcionales
Desbalance de voltaje (NEMA)
Activación 6 %
Restablecimiento 4,5 %
Tiempo de retardo de disparo
Voltaje bajo, voltaje alto 4 s
Averías por desbalance y
corriente entre fases 2 s
Tiempo de retardo de
restablecimiento
Luego de una falla o
pérdida total de energía Manual, ajustable de 2-300 s.
Características de salida
Clasificación nominal de contacto de salida
(DPDT - 2 Forma C)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
Rango de temperatura -40 °C a 70 °C (-40 °F a 158 °F)
Exactitud de activación
y restablecimiento ± 1 %
Potencia de entrada máxima 5 W
Humedad relativa Hasta 95 % sin condensación por IEC 68-2-3
Torque del terminal 0,8 Nm (7 in-lb).
Tamaño del cable 12-18 AWG
Protección contra transitorios
eléctricos (Interno) IEC 61000-4-5;1995 ± 6 kV
Aprobaciones
UL UL508 (Archivo #E68520)
CSA CSA 22.2 Nro. 14 (Archivo#46510)
CE CE IEC 60947-6-2
Dimensiones H 74,4 mm (2,93"); A 133,9 mm (5,27");
P 74,9 mm (2,95")
Peso 462,66 g (16,32 oz; 1,02 lb)
Método de montaje Tornillos n.º 8
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %.
SERIE 250A
www.littelfuse.com/250a
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
210 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/350
Descripción
La serie 350 es un monitor de voltaje para trabajo pesado. Este producto
debería utilizarse cuando se requieren relevadores de corriente alta o
contactos duales, o al utilizar controles de 480 V. Debido a que la Serie
350 utiliza relevadores para trabajos exigidos, viene en modelos con
rango de voltaje fijo en vez de versiones de rango automático duales
como el modelo 250.
El 350200 tiene un contacto para propósito general de 15 A. El 350400
proporciona un relevador SPDT (Forma C) nominal para conmutar hasta
600 V, permitiendo utilizar controles de 480 V, eliminando la necesidad
de un transformador de control de alimentación para inducir el voltaje de
120-240 V. Hay disponibles múltiples modelos de relevador DPDT (dos
contactos Forma C).
Los productos de la familia 350 basados en microcontroladores son
de bajo costo y una solución altamente avanzada para problemas con
trabajos de mucha exigencia. El modelo 350 incluye diagnósticos LED
individuales avanzados. Cinco patrones de luces diferentes clasifican
entre condiciones normales y de falla. Hay otras opciones disponibles
tales como la activación por voltaje alto y retardo de restablecimiento
ajustable.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitorea constantemente el voltaje trifásico para
proteger contra condiciones de línea de alimentación
peligrosas, incluso antes del encendido.
Indicación LED avanzada Proporciona diagnósticos que pueden utilizarse para
resolver problemas y determinar el estado de un relevador
Configuración del retardo de
disparo y restablecimiento
ajustable (modelos -2)
Permite el accionamiento escalonado de múltiples
motores, luego de una falla, para prevenir una condición de
voltaje bajo
Contactos de relevador de
600 V disponibles en algunos
modelos
Elimina la necesidad de un transformador de control para
variar el voltaje de 120-240 V para un circuito de control
Monitor de fase/voltaje trifásico
SERIE 350
Diagrama de conexiones
CONTACTO PRINCIPAL
INICIAR MANUAL DETENER
AUTO
APAGAR
CONTACTOR
MAGNÉTICO
POTENCIA
DE ENTRADA
CONTROL DE
ALIMENTACIÓN
Información para pedir
MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN
350200 190-240 V CA Retardo de restablecimiento y activación fija, SPDT 35040026 380-480 V CA DPDT, 2 relevadores (1)10a. (1) 15 A; retardo de
restablecimiento variable y activación fija (manual, 2-300 s)
3502002 190-240 V CA SPDT, retardo de restablecimiento variable y activación fija
(manual, 2-300 s) 35040028** 380-480 V CA DPDT, 2 relevadores de 15 A; retardo de restablecimiento
variable (sin restablecimiento manual)
35020026 190-240 V CA DPDT, 2 relevadores (1)10a. (1) 15 A; retardo de
restablecimiento variable y activación fija (manual, 2-300 s) 35040029 380-480 V CA SPDT, retardo de restablecimiento variable y disparo fijo
(manual, 2-300 s), más detección de voltaje alto
35020028** 190-240 V CA
DPDT, 2 relevadores de 15 A; retardo de restablecimiento
variable
(sin restablecimiento manual)
350600 475-600 V CA Retardo de restablecimiento y activación fija, SPDT
35020029 190-240 V CA SPDT, retardo de restablecimiento variable y disparo fijo
(manual, 2-300 s), más detección de voltaje alto 3506002 475-600 V CA SPDT, retardo de restablecimiento y disparo fijo (manual,
2-300 s)
350400 380-480 V CA Retardo de restablecimiento y activación fija, SPDT 35060026 475-600 V CA DPDT, 2 relevadores (1)10a. (1) 15 A; retardo de
restablecimiento variable y activación fija (manual, 2-300 s)
3504002 380-480 V CA SPDT, retardo de restablecimiento variable y activación fija
(manual, 2-300 s) 35060028** 475-600 V CA DPDT, 2 relevadores de 15 A; retardo de restablecimiento
variable (sin restablecimiento manual)
35040025 380-480 V CA DPDT, retardo de restablecimiento variable y disparo fijo
(manual, 2-300 s) 35060029 475-600 V CA SPDT, retardo de restablecimiento variable y disparo fijo
(manual, 2-300 s), más detección de voltaje alto
** Estas unidades no vienen equipadas con restablecimiento manual.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 6.
©2018 Controladores y Relevadores de Protección de Littelfuse 211
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Características de entrada
Voltaje de línea
350200 190-240 V CA
350400 380-480 V CA
350600 475-600 V CA
Frecuencia 50*/60 Hz
Características funcionales
Voltaje bajo (% del punto de ajuste)
Activación 90 %
Restablecimiento 93 %
Desbalance de voltaje (NEMA)
Activación 6 %
Restablecimiento 4,5 %
Tiempo de retardo de disparo:
Voltaje bajo 4 s
Averías por desbalance y
corriente entre fases 2 s
Tiempo de retardo de restablecimiento
Luego de una falla 2 s
Luego de una pérdida total
de energía 2 s
Características de salida
Clasificación nominal de contacto de salida
SPDT (350200)
Capacidad experimental 480 VA a 240 V CA
Propósito general 15 A
SPDT (350-400, 350-600) 470 VA a 600 V CA
DPDT (opción -6) 1-10 A Propósito general
Capacidad experimental de 480 VA a 240 V CA
Alcance general 1 a 15 A
Capacidad experimental de 480 VA a 240 V CA
1 HP a 240 V CA
DPDT (opción -8) 2-15 A Alcance general
Capacidad experimental de 480 VA a 240 V CA
1 HP a 240 V CA
SERIE 350
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Exactitud de activación y
restablecimiento ± 1 %
Potencia de entrada máxima 5 W
Terminal
Torque 7 libras por pulgada
Tamaño del cable 12-18 AWG
Protección contra rápidos
transitorios eléctricos
(Interno) IEC 61000-4-5;1995 ± 6 kV
Marcas de seguridad
UL UL508 (Archivo #E68520)
CSA 22.2 Nro. 14 (Archivo #46510)
CE IEC 60947-6-2
Dimensiones H 74,42 mm (2,93"); A 133,86 mm (5,27");
P 74,93 mm (2,95")
Peso 476,27 g (16,8 oz; 1,05 lb)
Método de montaje Tornillos n.º 8
Opciones especiales
Opción 2: Retardo de
restablecimiento variable Manual, ajustable de 2 a 300 s
Opción 5 : Relevador DPDT
Opción 6: 2 relevadores (1) 10 A, (1) 15 A
Opción 8: 2 relevadores (2) 15 A
Opción 9: Voltaje alto (% del punto de ajuste)
Activación 110 %
Restablecimiento 107 %
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %.
www.littelfuse.com/350
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
212 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/355
Descripción
La serie 355 es un monitor de voltaje trifásico con disparo ajustable y
retardo de restablecimiento, desbalance de voltaje y múltiples luces
de diagnóstico ajustables. Es ideal para aplicaciones de trabajo pesado
que requieren protección y diagnósticos simples y fáciles. Algunas
aplicaciones incluyen paneles de bomba, HVAC comercial, plataformas
petrolíferas, entre otras.
La serie 355 utiliza tecnología de microcontrolador para monitorear el
voltaje de entrada y desenergizar su relevador de salida si ocurre algún
problema eléctrico. La serie 355 puede proteger los motores de daños
ocasionados por fase individual, voltaje alto y bajo, inversión de fase
o desbalance de voltaje. Tiene cuatro LED de diagnóstico que indican
claramente condiciones de sobrevoltaje, bajo voltaje, desbalance de
voltaje, inversión de fase y normales.
El 355200 está equipado con un relevador SPDT de 10 A para propósito
general y trabajo pesado. Los 355400 y 355600 están equipados con un
relevador SPDT de capacidad experimental de 470 VA a 600 V CA. Hay
una opción de salida de relevador DPDT (600 V) de voltaje alto disponible
con el modelo 400 V.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado
en microcontrolador del
propietario
Monitorea constantemente el voltaje trifásico para
proteger contra condiciones de línea de alimentación
peligrosas, incluso antes del encendido.
Indicación LED avanzada Proporciona diagnósticos que pueden utilizarse para
resolver problemas y determinar el estado de un relevador
Configuración de retardo de
disparo y restablecimiento
ajustable
Previenen los disparos perjudiciales debido a condiciones
de líneas de suministro rápidamente variables y permiten
puestas en marcha escalonadas para múltiples motores,
para evitar una condición de voltaje bajo
Combina protección
y diagnósticos
Ideal para aplicaciones de trabajo pesado: paneles de
bomba, HVAC comercial y plataformas petrolíferas
Contactos de relevador de
600 V disponibles en algunos
modelos
Elimina la necesidad de un transformador de control para
variar el voltaje de 120-240 V para un circuito de control
Monitor de fase/voltaje trifásico
SERIE 355
Diagrama de conexiones
AUTOMÁTICO
MANUAL DETENER
APAGAR
INICIAR
CONTACTOR
MAGNÉTICO
CONTACTO PRINCIPAL
CONTROL DE
VOLTAJE
DE MOTOR
BOBINA
MAG
LUZ ALARMA
VOLTAJE
DE ALARMA
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELOS 355 CON CONTROL DE
ALARMA
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELOS 355 CON CONTROL DE MOTOR
Información para pedir
MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN
355200 190-240 V CA SPDT
355400 380-480 V CA SPDT
3554005 380-480 V CA DPDT
355600 475-600 V CA SPDT
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 6.
©2018 Controladores y Relevadores de Protección de Littelfuse 213
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Especificaciones
Características de entrada
Voltaje de línea
355200 190-240 V CA
355400 380-480 V CA
355600 475-600 V CA
(Especificar rango de voltaje)
Frecuencia 50*/60 Hz
Características funcionales
Voltaje bajo (% del punto de ajuste)
Activación 90 % ± 1 %
Restablecimiento 93 % ± 1 %
Voltaje alto (% del punto de ajuste)
Activación 110 % ± 1 %
Restablecimiento 107 % ± 1 %
Desbalance de voltaje (NEMA)
Activación 2-8 % ajustable
Restablecimiento Configuración de disparo menos 1 %
Tiempo de retardo de disparo:
Voltaje alto y bajo y desbalance 2 a 30 s ajustable
fallas entre fases
individuales (>25 % UB) 2 s
Tiempo de retardo de restablecimiento
Luego de una falla o
pérdida total de energía Manual, ajustable de 2-300 s.
Características de salida
Clasificación nominal de contacto de salida
SPDT (355200)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A
SPDT (355400, 355600)
Capacidad experimental 470 VA a 600 V CA
DPDT (opción -5)
Capacidad experimental 470 VA a 600 V CA
SERIE 355
Características generales
Rango de temperatura
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Exactitud de repetición
Condiciones fijas ± 0,1 %
Potencia de entrada máxima 6 W
Terminal
Torque 7 libras por pulgada
Tamaño del cable 12-18 AWG
Protección contra rápidos
transitorios eléctricos (Interno) 2500 V para 10 ms
Marcas de seguridad
UL UL508 (Archivo #E68520)
Dimensiones H 74,42 mm (2,93"); A 133,86 mm (5,27");
P 74,93 mm (2,95")
Peso 426,38 g (15,04 oz; 0,94 lb)
Método de montaje Tornillos n.º 8
Opciones especiales
Opción 5 - Relevador DPDT
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %.
www.littelfuse.com/355
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
214 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/455
SERIE 455
Monitor de fase/voltaje trifásico
Descripción
La serie 455 son monitores de voltaje trifásicos que combinan el
monitoreo del lado de la carga y la línea para brindar una protección
integral. El monitoreo de la carga exterior alertará al usuario sobre
posibles fallas del contactor o si estas ya han ocurrido. El monitoreo
de línea exterior también protegerá al motor de condiciones de fallas
peligrosas que es posible identificar antes de encenderlo. Con los
monitores de lado de la línea/carga, los motores deben encenderse
antes de detectar una falla de voltaje. Con la serie 455, su motor está
completamente protegido, siempre.
La serie 455 son monitores de voltaje de doble rango trifásicos que
protegen motores de 190-480 V CA, 50*/60 Hz, independientemente
de su tamaño. Selecciona automáticamente entre el rango de 200 V
y 400 V cuando el usuario elige el punto de ajuste de voltaje nominal.
Otros ajustes incluyen un retardo de disparo de 2 a 30 s, retardo de
restablecimiento de 2-300 s (y restablecimiento manual) y un punto de
disparo por desbalance de voltaje de 2 % a 8 %. El sistema de circuitos
del monitor de voltaje se alimenta por medio de las conexiones de
la línea externa, así que no es necesario un control de alimentación
separado, que facilita la instalación.
Equipada con un LED infrarrojo, la serie 455 puede comunicarse con
la herramienta de diagnóstico portátil opcional, Informer-MS, para
obtener información relevante, como por ejemplo, el voltaje en tiempo
real, desbalance de voltaje en el lado de la línea y de la carga, horas
de funcionamiento del motor, las 20 fallas más recientes, los últimos
32 encendidos del motor, puntos de disparo por voltaje alto y bajo,
punto de disparo por desbalance de voltaje, configuración del retardo
de disparo y restablecimiento, estado de los indicadores LED, y otras
funciones.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Monitoreo de carga
exterior del contactor
Protege el motor contra fallas del contactor o contactos
desgastados.
Monitorea el contactor o el
arrancador Previene el ciclo rápido
Capacidad de luces LED
infrarrojas
Aumenta la línea de seguridad del monitoreo general
utilizando el Informer-MS opcional
Accesorios
Informer-MS
Es una herramienta de diagnóstico portátil diseñada
para operar con Littelfuse® 455 equipado con un
transmisor LED infrarrojo.
Kit Informer IR 36
El cable del adaptador infrarrojo de 36" se conecta en
la parte frontal de la unidad para brindar diagnóstico
remoto sin abrir el panel.
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
455 190-480 V CA Línea universal y monitor de carga exterior
455480R 380-480 V CA Se utiliza en aplicaciones de voltaje alto con
capacidad experimental de 470 VA a 600 V CA
455575 475-600 V CA Para uso en Canadá o en NE, EE. UU. donde son
comunes servicios de electricidad de 575 V.
Diagrama de conexiones
CONTROL DE
ALIMENTACIÓN
DE 24 A 240 V CA
APAGAR
PILOTO
INICIAR
MANUAL DETENER
TERMOSTATO
OPCIONAL
POTENCIA
CONTACTOR
MAGNÉTICO
DE ENTRADA
BOBINA
AUTOMÁTICO
CONTROL DE
ALIMENTACIÓN
DE 24 A 240 V CA
APAGAR
PILOTO
INICIAR
MANUAL DETENER
TERMOSTATO
OPCIONAL
BOBINA
AUTOMÁTICO
CONTACTOR
MAGNÉTICO
POTENCIA
DE ENTRADA
MODELO 455 CON CONTROL DE MOTOR UTILIZANDO UN CONTACTOR DE 3 POLEAS
MODELO 455 CON CONTROL DE MOTOR UTILIZANDO UN CONTACTOR DE 2 POLEAS
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 509, Figura 6.
©2018 Controladores y Relevadores de Protección de Littelfuse 215
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
SERIE 455
Especificaciones
Frecuencia 50*/60 Hz
Voltaje bajo (% del punto de ajuste)
Activación 90 % ± 1 %
Restablecimiento 93 % ± 1 %
Voltaje alto (% del punto de ajuste)
Activación 110 % ± 1 %
Restablecimiento 107 % ± 1 %
Desbalance de voltaje (NEMA)
Activación 2-8 % ajustable
Restablecimiento Configuración de disparo menos 1 %
Tiempo de retardo de disparo
Voltaje alto y bajo
y desbalance 2 a 30 s ajustable
Averías entre fases individuales
(>25 % UB) 2 s fijos
Tiempo de retardo de restablecimiento
Luego de una falla Manual, ajustable de 2 a 300 s
Luego de una pérdida total
de energía Manual, ajustable de 2 a 300 s
Luego del apagado del motor Manual, ajustable de 2 a 300 s
Características de salida
Clasificación nominal de contacto de salida (SPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A
Relevador de voltaje alto (-480R)
Capacidad experimental 470 VA a 600 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Exactitud de repetición
Condiciones fijas ± 0,1 %
Potencia de entrada máxima 6 W
Terminal
Torque 7 libras por pulgada
Tamaño del cable 12-18 AWG
Protección contra transitorios
eléctricos (Interno) IEC 61000-4-5;1995 ± 6 kV
Marcas de seguridad
UL UL508 (Archivo #E68520)
CSA C22.2 Nro. 14 (Archivo #46510)
CE IEC 60947-6-2
Dimensiones H 74,4 mm (2,93"); A 133,9 mm (5,27");
P 74,9 mm (2,95")
Peso 498,95 g (17,6 oz; 1,1 lb)
Método de montaje Tornillos n.º 8
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %.
www.littelfuse.com/455
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
216 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/460
Monitor de voltaje trifásico
SERIE 460
Diagrama de conexiones
PILOTO
INICIAR MANUAL DETENER
AUTOMÁTICO CONTACTOR MAGNÉTICO
POTENCIA
DE ENTRADA
APAGAR
CONTROL DE ALIMENTACIÓN
DE 24 A 240 V CA
DIAGRAMA DE CONEXIONES TÍPICO PARA MODELOS 460 CON CONTROL DE MOTOR
Información para pedir
MODELO VOLTAJE DESCRIPCIÓN
460 190-480 V CA Detecta automáticamente el voltaje de línea, retardo de disparo de 1-30 s ajustable, retardo de restablecimiento de 1-500 s y punto de disparo por
desbalance de voltaje de 2-8 %
460-L 190-480 V CA Retardo de disparo de 4 s fijo y 1 segundo para fallas de fase individual de 1 s, y punto de disparo por desbalance de voltaje de 6 %
460-14 190-480 V CA Equipado con 2 juegos de contactos: Forma A (NO) y Forma B (NC). Utilizado en aplicaciones que requieren 2 voltajes diferentes, tales como 5 V CA
para una entrada PLC y 115 V CA para una alarma
460-575 475-600 V CA Utilizado comúnmente en la región oriental de Canadá y en unidades de generador que producen 600 V CA de potencia eléctrica
460-575-14 475-600 V CA Utilizado comúnmente en la región oriental de Canadá y en unidades de generador que producen 600 V CA de potencia eléctrica. Equipado con
2 juegos de contactos: Forma A y Forma B
460-15 190-480 V CA Equipado con 2 juegos de contactos de Forma A (NO). Utilizado en aplicaciones donde se controlan dos unidades diferentes a la vez, tal como una
unidad con contactos separados para un compresor o ventilador.
460-MR 190-480 V CA Equipado con una conexión por 2 clavijas de contacto para un pulsador normalmente abierto ubicado fuera del panel. Se utiliza en aplicaciones que
requieren un pulsador de restablecimiento manual externo
460-VBM 190-480 V CA Punto de disparo por desbalance de voltaje fijo de 6 %. Puntos de disparo por voltaje alto y bajo ajustable por el usuario
460-400 Hz 190-480 V CA Para utilizar con alimentación eléctrica de 400 Hz
460-OEM 190-480 V CA Paquete a granel de 460, 20 unidades
460L-OEM 190-480 V CA Paquete a granel de 460-L, 20 unidades
Descripción
La serie 460 es un monitor de voltaje trifásico que protege motores
de 190-480 V CA o 475-600 V, 50/60 Hz independientemente de
su tamaño. El producto proporciona un punto de ajuste de voltaje
nominal seleccionable por el usuario y el monitor de voltaje detecta
automáticamente el voltaje de la línea.
Este circuito de detección de voltaje de fase y de voltaje basado en
microprocesador único en su clase monitorea los voltajes trifásicos
para detectar condiciones peligrosas en la línea de alimentación tales
como voltaje alto, bajo, desbalanceado, pérdida de fases e inversión
de fase. Cuando detecta una condición peligrosa, el relevador de salida
de MotorSaver® se desactiva luego de cumplirse el retardo de disparo
definido. El relevador de salida se reactiva luego de que las condiciones
de la línea de alimentación alcancen niveles aceptables durante
una cantidad de tiempo especificada (retardo de restablecimiento).
Los retardos de disparo y restablecimiento previenen los disparos
perjudiciales ante condiciones de líneas de alimentación rápidamente
variables.
Todos los modelos 460 incluyen funciones de retardo de disparo de 1
a 30 s, retardo de restablecimiento de 1 a 500 s, punto de disparo por
desbalance de voltaje de 2 a 8 %, y un contacto de Forma C, salvo en
las condiciones que se mencionan a continuación.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Rango de voltaje amplio
con detección automática
Detecta automáticamente el voltaje del sistema entre
190-480 V CA o 475-600 V CA. Ahorra tiempo de
configuración
Configuración ajustable
de retardo de disparo y
restablecimiento
Previene los disparos perjudiciales debidos a condiciones de
líneas de alimentación rápidamente variables
Circuito basado
en microcontrolador Mayor confiabilidad y exactitud mejorada
Diagnósticos por LED
avanzados
Indicador visual rápido sobre causas del disparo y el estado
del relevador
Configuración ajustable del
disparo por desbalance de
voltaje
Proporciona protección fiable cuando existe voltaje generador
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 10.
©2018 Controladores y Relevadores de Protección de Littelfuse 217
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Rango de temperatura ambiente
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Potencia de entrada máxima 6 W
Clase de protección IP20, NEMA 1 (seguro para manipular)
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque de terminal 0,51 Nm (4,5 in-lb).
Tipo de cable Trenzado o sólido 12-20 AWG, uno por terminal
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia
(RFI), radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3,
controles y potencia de entrada de 3,5 kV
Sobretensión
IEC IEC 61000-4-5, Nivel 3, 4 kV línea a línea;
Nivel 4, línea a tierra de 4 kV
ANSI/IEEE Conformidad con onda oscilatoria y sobretensión al
nivel de línea a línea de 6 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Marcas de seguridad
UL UL508 (Archivo #E68520)
CE IEC 60947-6-2
Carcasa Policarbonato
Dimensiones H 88,9 mm (3,5"); A 52,9 mm (2,08");
P 59,69 mm (2,35")
Peso 0,3 kg (11,2 oz; 0,7 lb)
Método de montaje Riel DIN de 35 mm o montaje en superficie
(tornillos n.º 6 o n.º 8)
460-MR (restablecimiento manual) Requiere de pulsador NO externo.
Especificaciones
Frecuencia 50/60 Hz
Voltaje bajo (% del punto de ajuste)
Activación 90 % ± 1 %
Restablecimiento 93 % ± 1 %
Voltaje alto (% del punto de ajuste)
Activación 110 % ± 1 %
Restablecimiento 107 % ± 1 %
Desbalance de voltaje (NEMA)
Activación 2-8 % ajustable
Restablecimiento Configuración de disparo menos 1 % (5-8 %)
Configuración de disparo menos el 0,5 % (2-4 %)
460L 6 % UB fijo (restablecimiento 4,5 %)
Tiempo de retardo de disparo
Voltaje alto, bajo y desbalanceado 1-30 s ajustable
460L 4 s fijos
Averías entre fases individuales
(>25 % UB) 1 segundo fijo
Tiempo de retardo de
restablecimiento
Luego de una falla Ajustable de 1 a 500 s
Luego de una pérdida total
de energía Ajustable de 1 a 500 s
Clasificación nominal de
contacto de salida
Forma C
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 10 A a 240 V CA
Forma A y B
Capacidad experimental 360 VA a 240 V CA, B300
Propósito general 8 A a 240 V CA
SERIE 460
www.littelfuse.com/460
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
218 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/601
Descripción
El modelo 601 es un monitor de voltaje completamente programable
diseñado para proteger motores trifásicos ante pérdidas de cualquier
fase (fase individual), inversión de fase, voltaje alto o bajo, desbalance
de voltaje, frecuencia alta o baja, y ciclo rápido. Puede utilizarse como
un producto independiente o interconectado con un RM1000, RM2000,
PLC, computador o sistema SCADA.
Al detectar una condición peligrosa, el relevador de salida del 601
se desactiva luego de cumplirse el retardo de disparo definido. El
relevador de salida se reactiva luego de que las condiciones de la
línea de alimentación alcancen niveles aceptables para el retardo de
restablecimiento programado (RD2).
Once (11) puntos de ajuste que se proyectan en la pantalla LED de
3 dígitos o desde un dispositivo interconectado:
J Voltaje bajo
J Voltaje alto
J Desbalance de voltaje
J Frecuencia baja
J Frecuencia alta
J Disposición RS485
J retardo de disparo por fallas
de voltaje/frecuencia
J retardo de disparo para fallas de fase
única
J temporizador de ciclo rápido (RD1)
J retardo de restablecimiento luego de
todas las fallas (RD2)
J tipo de restablecimiento luego de
todas las fallas (manual o automático)
Seis (6) parámetros disponibles durante el funcionamiento del motor:
J Voltaje L1-L2
J Voltaje L2-L3
J Voltaje L1-L3
J Voltaje promedio
J Desbalance de voltaje (%)
J Frecuencia
Al utilizarse con el módulo de comunicaciones RS485MS-2W, el 601
puede comunicarse con la mayoría de dispositivos maestros Modbus
RTU. Se monitorean las condiciones del voltaje y los puntos de ajuste
pueden cambiarse remotamente utilizando el software Solutions, un
RM1000, RM2000 u otro dispositivo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Pantalla integrada Proporciona información y diagnósticos en tiempo real para
ayudar a resolver problemas
Configuraciones de
frecuencia y voltaje
programables
Permite utilizar el equipo en un amplio rango de sistemas
2 temporizadores
de retardo de
restablecimiento
programables
Programa los tiempos de retardo de restablecimiento para
protección contra ciclo rápido y enfriamiento del motor
2 temporizadores de
retardo de disparo
programables
1 retardo de disparo específicamente diseñado para
condiciones de falla en fases/pérdida de fases, 1 retardo
de disparo para las demás condiciones de falla.
Control de
restablecimiento
programable
Seleccione entre un restablecimiento manual o automático
ajustable según las necesidades de cada aplicación
Restablecimiento flexible
Opciones de restablecimiento que incluyen un pulsador en
el relevador o restablecimiento remoto con kit de
restablecimiento remoto opcional 777-MRSW u OL-RESET.
Compatibilidad con
pantallas remotas
Aumenta la seguridad mediante pantallas remotas con
datos en tiempo real e historial de fallas, sin la necesidad
de abrir el tablero eléctrico. Ayuda a cumplir con las
normas de seguridad para arco eléctrico
Capacidad de
comunicaciones por red
Compatible con módulo de comunicaciones
Modbus RS-485
Monitor de frecuencia y voltaje trifásico
SERIE 601
PILOTO
DETENER INICIAR MANUAL
AUTOMÁTICO
CONTACTOR
MAGNÉTICO
POTENCIA DE
ENTRADA
CONTROL DE
ALIMENTACIÓN
APAGAR
Diagrama de conexiones
MODELO 601 CON CONTROL DE MOTOR
Información para pedir
MODELO VOLTAJE DE
LÍNEA DESCRIPCIÓN
601 190-480 V CA Monitor de frecuencia y voltaje trifásico universal
601575 500-600 V CA Utilizado principalmente en Canadá y en NE, EE. UU.
donde son comunes servicios de electricidad de 575 V
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 1.
©2018 Controladores y Relevadores de Protección de Littelfuse 219
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
Accesorios
Módulo de comunicaciones RS485MS-2W
(para capacidades de Modbus limitadas) Se requiere
para habilitar la función de comunicaciones Modbus en
los productos Modelo 77X.
Monitor remoto RM1000
El sistema de administración de motor RM1000/777
combina la insuperable protección de motores
electrónicos y el monitoreo de motores crítico y fácil de
utilizar hasta para 16 dispositivos.
Monitor remoto RM2000
El sistema de administración de motor RM2000/777
combina la insuperable protección de motores
electrónicos y el monitoreo de motores crítico y fácil
de utilizar con registro de eventos y reloj en tiempo real
para certificación de hora y fecha.
Kit de restablecimiento remoto manual 777-MRSW
Permite que la línea 777 de productos MotorSaver®
y PumpSaver® sea restablecida manualmente sin
necesidad de abrir el panel.
OL-RESET Kit de restablecimiento remoto manual
Permite que la línea 777 de productos MotorSaver®
y PumpSaver® sea restablecida manualmente sin
necesidad de abrir el panel.
SERIE 601
Especificaciones
Características de entrada
Frecuencia 50/60 Hz
Características funcionales
Puntos de funcionamiento
programables
LV- Límite de voltaje bajo 170 V (450 V*) - Configuración HV
HV- Límite de voltaje alto Configuración LV - 528 V (660 V*)
VUB - Desbalance de voltaje
Límite 2-15 % o desactivado
HF - Frecuencia baja
Límite 35 Hz - Ajuste HF
LF - Frecuencia alta
Límite 75 Hz - Ajuste LF
TD1 - Retardo de disparo para
fallas por frecuencia,
desbalance/voltaje 1-50 s
TD2 - Retardo de disparo
Averías de fase única 1-50 s
RD1 - Temporizador de ciclo rápido 0, 2-500 s
RD2 - Retardo de restablecimiento
Todas las fallas 2-500 s
#RF - Tipo de reinicio Manual o automático
ADDR - Disposición RS-485 A01-A99
Puntos de restablecimiento fijos
Restablecimiento por sobrecarga 97 % del ajuste HV
Restablecimiento por voltaje bajo 103 % del ajuste LV
Restablecimiento por desbalance
de voltaje Ajuste UB -1 %
Restablecimiento por frecuencia baja Ajuste LF +0,6 Hz
Restablecimiento por frecuencia alta Ajuste HF -0,6 Hz
Características de salida
Clasificación nominal de contacto
de salida
Capacidad experimental 480 VA a 240 V CA
Características generales
Rango de temperatura -20 °C a 70 °C (-4 °F a 158 °F)
Precisión
Voltaje ± 1 %
Temporización 5 % ± 1 segundo
Repetibilidad
Voltaje ± 0,5 %
Potencia de entrada máxima 5 W
Protección contra rápidos
transitorios eléctricos (Interno) 2500 V para 10 ms
Marcas de seguridad
UL UL508 (Archivo #E68520)
CSA C22.2 Nro. 14 (Archivo #46510)
CE IEC 60947-6-2
Dimensiones H 77,47 mm (3,05"); A 97,79 mm (3,85");
P 128,27 mm (5,05")
Peso 544,31 g (19,2 oz; 1,2 lb)
Método de montaje Montaje en superficie (4 tornillos n.º 8)
o montaje en riel DIN
El 601 puede programarse antes de la instalación aplicando al menos 120 V en los terminales L1 y L2.
*Modelo 575 V
www.littelfuse.com/601
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
220 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/601csdp1
601-CS-D-P1
Descripción
El monitor de energía trifásico 601-CS-D-P1 es un monitor electrónico
completamente programable diseñado para monitorear sistemas
trifásicos. El 601-CS-D-P1 tiene un retardo individual que puede
configurarse como una salida en red de propósito general o para
activarse ante fallas de conexión a tierra. El 601-CS-D-P1 monitorea
la corriente con fallas de conexión, corrientes de fase, voltajes de
fase, factor de alimentación eléctrica y frecuencia. El módulo de
comunicaciones RS485MS-2W permite al 601-CS-D-P1 comunicarse por
medio del protocolo Modbus RTU. La conexión Modbus puede utilizarse
para monitorear parámetros de alimentación, configurar dispositivos o
controlar el relevador de detección de fallas. Está disponible también
un módulo de comunicaciones de entrada y salida DeviceNet™
(CIO-601CS-DN-P1). Este módulo CIO solo funciona con la unidad
601-CS-D-P1. Se utiliza para enviar la información desde el 601-CS-D-P1
hacia una red DeviceNet™. Además, proporciona capacidades de E/S y
la capacidad para definir parámetros del 601-CS-D-P1.
Nota: Para un funcionamiento adecuado, este producto debe utilizarse con un CT de secuencia cero externo
(se vende por separado).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Pantalla integrada
Indicación visual para programación y visualización de
parámetros en tiempo real de voltaje nominal, desbalance
de voltaje, corriente, desbalance de corriente, advertencias
de fallas de conexión a tierra, disparo por fallas de
conexión a tierra y aceleración del motor por fallas
eléctricas
15 parámetros programables
para controlar el
funcionamiento del
dispositivo
Permite al usuario personalizar la protección requerida para
su sistema
2 temporizadores de retardo
de disparo programables
Programe el tiempo de retardo de disparo por separado
para aceleración del motor y fallas de conexión a tierra
Capacidad de
comunicaciones por red
Compatible con protocolos Modbus RTU y DeviceNet™ con
el uso del módulo de comunicaciones por separado
Accesorios
Módulo CIO-601CS-DN-P1
Interfaz práctica y económica DeviceNet™ con
capacidad de proporcionar control y monitoreo
discreto de iniciadores de motor, controladores y otros
dispositivos en una red DeviceNet™.
Monitor de energía trifásico
Diagrama de conexiones
CONTROL DE
ALIMENTACIÓN
EN
MOTOR
INICIAR
BOBINA
DETENER
AUTOMÁTICO
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 1.
©2018 Controladores y Relevadores de Protección de Littelfuse 221
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
601-CS-D-P1
Especificaciones
Características de entrada
Voltaje de línea 200-480 V CA
Frecuencia 50/60 Hz
Rango de amperaje para carga
completa del motor 0,5-175 A (directa) 176-800 A (se requiere de CT)
Corriente con falla de
conexión a tierra de entrada 0,5-10 A
Características de salida
Clasificación nominal de
contacto de salida (SPDT)
Capacidad experimental 480 VA a 240 V CA
Propósito general 10 A a 240 V CA
Duración estimada
Operaciones mecánicas 1 x 106
Operaciones eléctricas 1 x 105
en carga nominal
Características generales
Rango de temperatura ambiente
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Exactitud a 25 °C (77 °F)
Voltaje +/-1 %
Corriente +/-3 % (<175 A directa)
Corriente GF +/-3 %
Repetibilidad
Voltaje +/-0,5 % de voltaje nominal
Corriente +/-1 % (<175 A directa)
Potencia de entrada máxima 10 W
Grado de contaminación 3
Tipo de protección IP20
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Torque del terminal 0,8 Nm (7 in-lb).
Estándares superados
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencias,
Conducida IEC 61000-4-6, Nivel 3 10 V
Inmunidad a radiofrecuencias
Radiada IEC 61000-4-3, Nivel 3 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 3,5 kV
Clasificación nominal
de cortocircuitos 100 kA rms, SYM, 600 V CA máx.
Sobretensión Inmunidad IEC IEC 61000-4-5, Nivel 3, línea a línea de 2 kV;
Nivel 4, línea a tierra de 4 kV
ANSI/IEEE Conformidad con onda oscilatoria y sobretensión al
nivel de línea a línea de 6 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Marcas de seguridad
UL UL508 (Archivo #E68520)
CE IEC 60947-1, IEC 60947-5-1
Tamaño máximo del conductor
(con aislamiento) 16,5 mm (0,65")
Dimensiones H 77,47 mm (3,05"); A 97,79 mm (3,85");
P 128,27 mm (5,05")
Peso 544,31 g (19,2 oz; 1,2 lb)
Método de montaje Montaje en superficie (4 tornillos n.º 8) o
montaje en riel DIN
www.littelfuse.com/601csdp1
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
222 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/wvm
SERIE WVM
Descripción
La serie WVM brinda protección contra fallas prematuras en equipos
(motores) ocasionadas por fallas en el voltaje en líneas trifásicas. El
diseño basado en microcontrolador del WVM proporciona protección
fiable incluso si hay voltajes regenerados. Combina la detección de fallas
fiable con una memoria de 10 fallas y una pantalla de estado de 6 LED.
En parte instrumento y en parte control, el WVM protege su equipo
mientras usted no está presente y proyecta lo que ocurrió cuando esté
de vuelta. El WVM es completamente ajustable e incluye retardos de
tiempo para prevenir activaciones falsas y mejorar el funcionamiento
del sistema. Los retardos de tiempo incluyen un retardo de disparo
ajustable de 0,25 a 30 s, un retardo de restablecimiento (en 3 rangos)
de 0,25 a 64 min, más un retardo de ejecución aleatoria de 3 a 15 s
único en su clase. El retardo de ejecución aleatoria previene variaciones
de voltaje ocasionadas por el restablecimiento simultáneo de múltiples
cargas del motor luego de un corte eléctrico.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante para proteger contra pérdida de
fase, inversión de fase, sobrevoltaje, bajo voltaje,
desbalance y ciclo corto
Memoria de fallas Almacena las últimas 10 fallas, que brindan un
diagnóstico para la resolución de problemas
Indicación LED
Proporciona indicación visual del estado del relevador/
fallas existentes o las fallas almacenadas en la
memoria.
Elija entre restablecimiento
automático, restablecimiento
automático con retardo y
restablecimiento manual
Permite al usuario realizar ajustes para adaptar los
requisitos de cada aplicación
Retardo de restablecimiento
aleatorio
Previene variaciones de voltaje ocasionadas por el
restablecimiento simultáneo de múltiples cargas de
motor luego de un corte eléctrico.
Funcionamiento
El relevador de salida se energiza cuando todas las condiciones son
aceptables y se restablece el WVM. Un restablecimiento o retardo de
restablecimiento aleatorio puede ocurrir antes de energizar el relevador
de salida.
Ajuste en el campo: elija el voltaje de línea indicado en la placa de
nombre del motor. Esto ajusta automáticamente los puntos de disparo
por bajo voltaje y sobrevoltaje. No se requieren ajustes adicionales para
lograr una máxima protección del equipo.
Diagrama de conexiones
F = Fusibles
NO = Normalmente abierta
NC = Normalmente cerrada
RS = Conmutador de restablecimiento
remoto opcional
Los contactos del relevador están aislados.
Precaución: Los fusibles de activación rápida de
2 amperios máximos deben instalarse externamente en
serie con cada entrada. (3)
Información para pedir
MODELO VOLTAJE DE LÍNEA DESBALANCE RETARDO DE
ACTIVACIÓN
MÉTODO DE RESTABLECIMIENTO POR
CONMUTADOR RETARDO DE RESTABLECIMIENTO
WVM011AL 500 a 600 V CA 2-10 % 0,25-30 s Reinicio automático de disparo por falla 0,25-64 s
WVM611AH 200 a 240 V CA 2-10 % 0,25-30 s Reinicio automático de disparo por falla 0,25-64 min
WVM611AL 200 a 240 V CA 2-10 % 0,25-30 s Reinicio automático de disparo por falla 0,25-64 s
WVM611RL 200 a 240 V CA 2-10 % 0,25-30 s Reinicio automático de corrección por falla 0,25-64 s
WVM811AH 355 a 425 V CA 2-10 % 0,25-30 s Reinicio automático de disparo por falla 0,25-64 min
WVM811RL 355 a 425 V CA 2-10 % 0,25-30 s Reinicio automático de corrección por falla 0,25-64 s
WVM911AH 400 a 480 V CA 2-10 % 0,25-30 s Reinicio automático de disparo por falla 0,25-64 min
WVM911AL 400 a 480 V CA 2-10 % 0,25-30 s Reinicio automático de disparo por falla 0,25-64 s
WVM911AL-60 400 a 480 V CA 2-10 % 0,25-30 s Reinicio automático de disparo por falla 0,25-64 s, sin retardo de inicio aleatorio
WVM911AN 400 a 480 V CA 2-10 % 0,25-30 s Reinicio automático de disparo por falla 6-300 s
WVM911RH 400 a 480 V CA 2-10 % 0,25-30 s Reinicio automático de corrección por falla 0,25-64 min
WVM911RL 400 a 480 V CA 2-10 % 0,25-30 s Reinicio automático de corrección por falla 0,25-64 s
WVM911RN-60 400 a 480 V CA 2-10 % 0,25-30 s Reinicio automático de corrección por falla 6-300 s, sin retardo de inicio aleatorio
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 29.
©2018 Controladores y Relevadores de Protección de Littelfuse 223
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
SERIE WVM
Lectura de la memoria: las fallas almacenadas en la memoria se
indican cuando el LED amarillo se ilumina, que registra hasta 10 fallas.
Restablecer memoria: para borrar la memoria de las fallas
almacenadas, gire el selector a la posición Borrar memoria
(Clear Memory) por 5 s. El LED amarillo se apagará.
Sobrecarga de memoria: solo se almacenan las 10 fallas
más recientes.
Retardo de inicio aleatorio: puede seleccionar un retardo de inicio
aleatorio de 3 a 15 s con el microprocesador cuando se corrija una falla
y cuando se aplique el voltaje de funcionamiento (L1, L2, L3) al WVM.
El retardo de inicio aleatorio no ocurre cuando el restablecimiento es
manual.
Restablecimiento automático: una vez corregida una falla, el relevador
de salida se reenergizará después de cumplirse el retardo de inicio
aleatorio.
Restablecimiento automático ante disparo por falla: cuando detecta
una falla para el retardo de disparo completo, el relevador de salida se
desenergiza y se inicia el retardo de restablecimiento. Este retardo
bloquea la salida durante el período de retardo. Si la falla se corrige
al cumplirse el retardo de restablecimiento, la salida se reenergizará
luego de un retardo de inicio aleatorio. Un retardo de restablecimiento
ocurrirá también cuando se aplica el voltaje de funcionamiento (L1, L2,
L3) al WVM.
Restablecimiento manual: luego de corregir una condición de falla,
el WVM puede ser restablecido manualmente. Existen dos métodos
para ello: un conmutador remoto suministrado por el usuario, o el
conmutador en pulsador integrado.
Restablecimiento manual (Integrado): gire el conmutador selector
desde la posición Restablecimiento manual (Manual Reset) hasta
Restablecimiento automático (Auto Restart) con retardo y luego gírelo
de nuevo hasta Restablecimiento manual una vez transcurridos 3 s. La
salida se energizará inmediatamente.
Restablecimiento remoto: el restablecimiento (reinicio) se logra
con el cierre parcial del contacto en los terminales 1 y 2. La salida
se energizará inmediatamente. Los requisitos para el conmutador
remoto son ≥10 mA a 20 V CC y los terminales de restablecimiento no
están aislados del voltaje de línea. Una resistencia de ≤20 kΩ en los
terminales 1 y 2 permitirá un restablecimiento automático inmediato.
Restablecimiento automático bajo corrección de falla: (P/N incluye
un R) cuando se detecta una falla para el retardo de disparo completo,
el relevador de salida se desenergiza. Al corregir la falla, se inicia un
retardo de restablecimiento. Cuando finaliza dicho retardo, el relevador
de salida se reenergizará luego de un retardo de inicio aleatorio. Si
llegase a ocurrir una falla durante el tiempo de restablecimiento, el
retardo del tiempo de restablecimiento será cero, y el relevador de
salida no se energizará antes de finalizar dicho retardo.
Accesorios
LPSM003ZXID (con indicación),
LPSM003Z (sin indicación) Portafusibles
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para
fusibles Clase CC y microfusibles. 600 VCA/CC
Microfusible 0KLK002.T (2 amperios)
Fusible de 10 x 38 de activación rápida, alta
capacidad de corte y de tipo limitador de corriente.
600 V CA/500 V CC
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Especificaciones
Voltaje de línea
Tipo Conexión en triángulo o en estrella trifásica sin
conexión a neutro
Voltaje de funcionamiento Modelo Ajuste Rango de
voltaje de línea
240 200-240 V CA
380 355-425 V CA
480 400-480 V CA
600 500-600 V CA
Frecuencia de línea CA 50/60 Hz
Sobrevoltaje, voltaje bajo,
y desbalance de voltaje
Punto de disparo por sobrevoltaje 109-113 % del voltaje ajustado
Voltaje de restablecimiento -2 % del punto de disparo
Punto de disparo por bajo voltaje 88-92 % del voltaje ajustado
Voltaje de restablecimiento +2 % del punto de disparo
Desbalance de voltaje Ajustable desde 2-10 %*
Retardo de disparo Ajustable desde 0,25-30 s ± 15 %
Pérdida de fase desbalance del ≥ 15 %
Tiempo de respuesta ≤ 200 ms
Rango de retardo de inicio aleatorio 3-15 s
Retardo de restablecimiento (reinicio)
Rango bajo 0,25-64 s ± 15 %
Rango normal 6-300 s ± 15 %
Rango alto 0,25-64 min ± 15 %
Memoria defectuosa
Tipo RAM no volátil
Capacidad Almacena las 10 últimas fallas
Indicadores de estado 6 LED indican el estado actual y
el modo de lectura de memoria
Nota: 50 % del voltaje de línea operativo
debe ser aplicado a L1 y L2 para un correcto
funcionamiento de los indicadores de estado
Salida
Tipo Relevador electromecánico
Forma Aislada, SPDT
Clasificación nominal 10 A resistiva a 250 V CA; 6A inductiva
(0,4 PF) a 250 V CA
Duración Mecánica - 1 x 107
Protección
Averías/inversión de fase ASME A17.1 Directriz 210.6
Motores y generadores NEMA MG1 14:30, 14:35
Sobretensión IEEE 62.41-1991 Nivel B
Voltaje de aislamiento ≥ 2500 V RMS entre terminales de entrada y salida
Mecánica
Montaje Superficie con 2 o 4 tornillos n.º 8 (M4 x 0.7)
Dimensiones H 175,3 mm (6,9"); A 111,8 mm (4,4");
P 61,0 mm (2,4")
Terminación Terminales de conexión con abrazaderas para cable
cautivo para cables de 3,2 mm2
(n.º 12 AWG)
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 65 °C/-40 °C a 85 °C
Peso ≅ 709 g (25 oz)
* El restablecimiento por desbalance es del 90 % del ajuste de desbalance (p. ej; VUB a 5 % cuyo
restablecimiento es de 4,5 %)
www.littelfuse.com/wvm
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
224 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
www.littelfuse.com/dlmu
SERIE DLMU
Descripción
La serie DLMU es un monitor de voltaje trifásico y voltaje universal.
Mide constantemente el voltaje de cada una de las tres fases con la
exactitud de un microcontrolador y compara los valores con los puntos
de disparo definidos. Mide independientemente la inversión de fase
y las pérdidas de voltaje, sobrevoltaje, voltaje bajo o desbalance de
voltaje; y la frecuencia baja o alta. La protección se garantiza durante
períodos de grandes fluctuaciones de voltaje promedio o cuando hay
presencia de voltajes regenerados. La unidad se activa en 200 ms
al detectar una pérdida de fase. Los retardos de tiempo ajustables
incluidos previenen disparos perjudiciales y ciclos cortos para equipo
sensible. El SPDT aislado de 10 A y los contactos del relevador de salida
para alarma de 2 A se activan cuando un voltaje de fase supera los
límites de disparo para el retardo de disparo. Voltaje de línea nominal,
desbalance de voltaje y retardos de tiempo ajustables por perilla. El
punto de ajuste por pérdida de fase y el rango de frecuencia aceptable
son fijos. Los sistemas con conexión en triángulo y en estrella pueden
ser monitoreados; no se requiere conexión a neutro.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador patentado
Monitoreo constante para proteger contra pérdida de fase,
inversión de fase, sobrevoltaje, bajo voltaje, desbalance, y
ciclo corto y frecuencia baja o alta
Rango de voltaje
de línea universal
Flexibilidad para trabajar en aplicaciones de 200 a
480 V CA o 500 a 600 V CA
Montaje en riel DIN (35 mm)
o en superficie Flexibilidad en la instalación
Indicación LED Proporciona diagnósticos de retardo, fallas y estado de
retardo del tiempo
Retardos de tiempo
ajustables por el usuario
Previene disparos perjudiciales y ciclos cortos en equipos
sensibles
Accesorios
LPSM003ZXID (con indicación),
LPSM003Z (sin indicación) Portafusibles
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para
fusibles Clase CC y microfusibles. 600 VCA/CC
Microfusible 0KLK002.T (2 amperios)
Fusible de 10 x 38 de activación rápida, alta
capacidad de corte y de tipo limitador de corriente.
600 V CA/500 V CC
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Información para pedir
MODELO VOLTAJE DE LÍNEA SALIDA FUNCIÓN DE RESTABLECIMIENTO DESBALANCE DE VOLTAJE RETARDO DE ACTIVACIÓN RETARDO DE RESTABLECIMIENTO
DLMHBRAAA 500 a 600 V CA SPDT Y NO Restablecimiento escalonado Ajustable 2-10 % Ajustable 1-30 s Ajustable 0,6-300 s
DLMUBLAAA 200 a 480 V CA SPDT Y NO Tiempo de apagado/bloqueo
mínimo Ajustable 2-10 % Ajustable 1-30 s Ajustable 0,6-300 s
DLMUBNAAN 200 a 480 V CA SPDT Y NO Sin retardo de restablecimiento Ajustable 2-10 % Ajustable 1-30 s Ninguno
DLMUBRAAA 200 a 480 V CA SPDT Y NO Restablecimiento escalonado Ajustable 2-10 % Ajustable 1-30 s Ajustable 0,6-300 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
!
FUSIBLES
L1, L2, L3 = Entrada de voltaje de línea
NO = Contacto normalmente abierto
NC = Contacto normalmente cerrado
C = Sonda común o contacto de
transferencia
PRECAUCION: 2 amperios, máximo se recomienda el uso
de fusibles de disparo rápida para proteger las conexiones
del equipo. No son necesarios para proteger el DLMU.
! = Seleccione la conexión del contacto de alarma como N.O. o N.C. cuando
hace el pedido; N.O. Como se muestra en la imagen.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 30.
©2018 Controladores y Relevadores de Protección de Littelfuse 225
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
SERIE DLMU
Funcionamiento
Cuando se aplica el voltaje de línea, el relevador de salida se desenergiza
y se inicia el retardo de restablecimiento. Si todos los voltajes trifásicos
están dentro del rango aceptable, el relevador de salida se energiza
al finalizar el retardo de restablecimiento. El sistema de circuitos
por microcontrolador detecta automáticamente el rango de voltaje,
y selecciona la frecuencia de funcionamiento correcta (50 o 60 Hz).
Los puntos de disparo por voltaje bajo y sobrevoltaje se ajustan
automáticamente. Cuando el valor medido en cualquier voltaje de fase
supera los límites de rango aceptables (inferior o superior), se inicia el
retardo de disparo. Al final del retardo de disparo, el relevador de salida
se desenergiza. Si el voltaje de fase regresa a un nivel aceptable antes
de cumplirse el retardo de disparo, el retardo de disparo se restablecerá
y el relevador de salida permanecerá energizado. El voltaje bajo,
sobrevoltaje, desbalance de voltaje y la frecuencia alta o baja deben ser
detectados en el retardo de disparo completo antes de que la unidad
se active. La unidad se activa en 200 ms al detectarse una inversión de
fase o pérdida de fase. La unidad no se energizará si se detecta una falla
cuando se aplica el voltaje de línea.
Restablecer: el restablecimiento es automático cuando se corrige el
voltaje, las fallas en la frecuencia o la secuencia de fases.
Opciones de retardo de restablecimiento
L = Tiempo de bloqueo o apagado mínimo. El retardo de
restablecimiento comienza al activarse el relevador de salida. La
unidad no puede ser reenergizada antes de finalizar el retardo de
restablecimiento. Esto brinda un tiempo de apagado mínimo o tiempo
de bloqueo que permite que el equipo sensible realice un ciclo corto, o
asigne un tiempo de restablecimiento. Si la falla es corregida luego de
completarse el retardo de restablecimiento, el relevador de salida se
energizará de inmediato. El retardo de restablecimiento ocurre también
cuando se aplica o se vuelve a aplicar el voltaje de línea.
R = Retardo de restablecimiento cuando se corrige la falla. El retardo
de restablecimiento se inicia cuando el voltaje de línea es aplicado
nuevamente o cuando se corrige una falla de voltaje. Esta opción
normalmente se selecciona cuando se requiere restablecimiento
escalonado de múltiples motores en un sistema de alimentación.
N = Sin retardo de restablecimiento. Retardo de inicialización de 0,6 s en
aplicaciones con voltajes de línea.
Notas sobre el restablecimiento: Todas las opciones de
restablecimiento permanecen reiniciadas al detectarse las condiciones a
continuación.
1. Pérdida de fase (desbalance de fase mayor al 25 %)
2. Voltaje de línea promedio inferior a 120 V CA
3. Fase inversa
El retardo de restablecimiento inicia cuando se corrige una condición.
Funcionamiento LED
Los LED parpadean en verde durante el retardo de restablecimiento,
luego se iluminan en verde cuando el relevador de salida se energiza.
Parpadean en rojo durante el retardo de disparo y luego se iluminan en
rojo cuando el relevador de salida se desenergiza. Parpadean en verde o
rojo si se detecta una inversión de fase. Si se detecta una falla durante
el retardo de restablecimiento, los LED se encenderán en rojo durante
ese lapso o durante todo el retardo de restablecimiento.
Especificaciones
Voltaje de línea
Tipo Conexión en triángulo o en estrella trifásica sin
conexión a neutro
Voltaje de funcionamiento
200-480 V CA
Rango de
ajuste del
voltaje
Frecuencia
de la Línea
Voltaje de
Rango línea máximo
240 200-240 V CA 50/60 Hz
380 340-420 V CA 50 Hz
480 400-480 V CA 60 Hz 550 V CA
600 V CA 600 500-600 V CA 50/60 Hz 600 V CA
Frecuencia de línea CA 50/60 Hz detectada automáticamente
Pérdida de fase ≥ desbalance del 25 %
Tiempo de respuesta ≤200 ms
Bajo voltaje y desbalance de voltaje
Tipo Detección de voltaje con disparo retrasado y
restablecimiento automático
Sobrevoltaje
Voltaje de disparo 109-113 % del voltaje de línea ajustado
Voltaje de restablecimiento ≅ -3 % del voltaje de disparo
Bajo voltaje
Voltaje de disparo 88-92 % del voltaje de línea ajustado
Voltaje de restablecimiento ≅ +3 % del voltaje de disparo
Desbalance de voltaje Ajustable 2-10 % o especificar desbalance fijo de
2-10 % en incrementos de 1 %
Restablecer durante el balance ≅ desbalance de -0,7 %
Retardo de activación
Activar por Sobrevoltaje/voltaje bajo, desbalance de voltaje,
frecuencia alta/baja
Rango Ajustable de 1-30 s o especificar retardo fijo
1-30 s en incrementos de 1 segundo
Tolerancia ± 15 %
Retardo de restablecimiento
Rango Ajustable de 0,6-300 s; si no elige un retardo
de restablecimiento, se aplica un retardo de
inicialización de 0,6 s
Tolerancia ± 15 %
Frecuencia alta o baja ± 4 %; Restablecimiento ± 3 %; 50/60 Hz
Secuencia de fase A, B, C, L1, L2, L3
Tiempo de respuesta -Fase
Fase inversa o pérdida de fase ≤200 ms
Restablecimiento Automático
Salida
Tipo Relevador electromecánico aislado
Forma C Aislada, SPDT
Clasificación nominal de Forma C 10 A resistiva a 240 V CA;
8 A resistiva a 277 V CA; NO-1/4 HP a 120 V CA;
1/3 HP a 240 V CA
Forma A Aislada, NO, SPST
Clasificación nominal de Forma A 2 A a 277 V CA
Duración Mecánica - 1 x 106
; Eléctrica - 1 x 303
www.littelfuse.com/dlmu
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
226 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
Protección
Averías/inversión de fase ASME A17.1 Directriz 210.6
Motores y generadores NEMA MG1 14:30, 14:35
Sobretensión IEEE C62.41-1991 Nivel B
Voltaje de aislamiento ≥ 2500 V RMS entre terminales de entrada y salida
Mecánica
Montaje Montaje en superficie con 2 tornillos n.º 8 (M4 x 0.7)
o anillo de presión en riel DIN de 35 mm
Nota: se requiere un espacio de 6,35 mm
(0,25 in) entre unidades u otros dispositivos
Dimensiones H 110 mm (4,33"); A 75 mm (2,95");
P 50 mm (1,97")
Terminación Terminales de conexión con abrazaderas para cable
cautivo para cable 2,5 mm2
(n.º 14 AWG)
Torque del terminal 0,5 Nm (4,4 in-lb)
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 244 g (8,6 oz)
www.littelfuse.com/dlmu
SERIE DLMU
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 227
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hlmu
SERIE HLMU
Descripción
La serie HLMU es un monitor encapsulado para monitorear voltajes
universales y trifásicos. Mide constantemente el voltaje de cada una
de las tres fases con la exactitud de un microcontrolador y compara los
valores con los puntos de disparo definidos. Mide independientemente
la inversión de fase y las pérdidas de voltaje, sobrevoltaje, voltaje
bajo o desbalance de voltaje; y la frecuencia baja o alta. La protección
se garantiza durante períodos de grandes fluctuaciones de voltaje
promedio, o cuando hay presencia de voltajes regenerados. La unidad
se activa en 200 ms al detectar una pérdida de fase. Los retardos de
tiempo ajustables incluidos previenen disparos perjudiciales y ciclos
cortos para equipo sensible. Los contactos del relevador DPDT aislados
de 10 A se activan cuando un voltaje de fase supera los límites de
disparo para el retardo de disparo. Voltaje de línea nominal, desbalance
de voltaje y retardos de tiempo ajustables por perilla. El punto de
ajuste por pérdida de fase y el rango de frecuencia aceptable son
fijos. Los sistemas con conexión en triángulo y en estrella pueden ser
monitoreados; no se requiere conexión a neutro.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante para proteger contra pérdida de fase,
inversión de fase, sobrevoltaje, voltaje bajo, desbalance de
voltaje y frecuencia baja o alta
Rango de voltaje de línea
universal
Flexibilidad para trabajar en aplicaciones de 200 a
480 V CA
Montaje en riel DIN (35 mm)
o en superficie Flexibilidad en la instalación
Indicación LED Proporciona diagnósticos de retardo, fallas y estado de
retardo del tiempo
Encapsulado Protege contra impactos, vibración y humedad
Bloques de terminal de
manipulación segura Cumplen los requisitos de seguridad IEC 61000
Accesorios
LPSM003ZXID (con indicación),
LPSM003Z (sin indicación) Portafusibles
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para
fusibles Clase CC y microfusibles. 600 VCA/CC
Microfusible 0KLK002.T (2 amperios)
Fusible de 10 x 38 de activación rápida, alta
capacidad de corte y de tipo limitador de corriente.
600 V CA/500 V CC
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Información para pedir
MODELO SALIDA FUNCIÓN DE
RESTABLECIMIENTO
DESBALANCE
DE VOLTAJE
RETARDO DE
ACTIVACIÓN
RETARDO DE
RESTABLECIMIENTO
HLMUDLAAA DPDT
Tiempo de
apagado/bloqueo
mínimo
Ajustable
2-10 %
Ajustable
1-30 s
Ajustable
0,6-300 s
HLMUDN0405N DPDT Sin retardo de
restablecimiento Fijo, 4 % Fijo, 5 s Ninguno
HLMUDNAAN DPDT Sin retardo de
restablecimiento
Ajustable
2-10 %
Ajustable
1-30 s Ninguno
HLMUDRAAA DPDT Restablecimiento
escalonado
Ajustable
2-10 %
Ajustable
1-30 s
Ajustable
0,6-300 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
FUSIBLES
FUSIBLES DE
ACCIONAMIENTO
RÁPIDO DE
2 AMPERIOS
L1, L2, L3 = Entrada de voltaje de
línea
NO = Contacto normalmente
abierto
NC = Contacto normalmente
cerrado
C = Sonda común o contacto de
transferencia
PRECAUCION: 2 amperios, máximo se
recomienda el uso de fusibles de disparo rápida
para proteger las conexiones del equipo. No son
necesarios para proteger el HLMU.
NOTA: los contactos de relevador están
aislados, 277 V CA, máximo
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 31.
228 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
SERIE HLMU
Funcionamiento
Cuando se aplica el voltaje de línea, el relevador de salida se desenergiza
y se inicia el retardo de restablecimiento. Si todos los voltajes trifásicos
están dentro del rango aceptable, el relevador de salida se energiza
al finalizar el retardo de restablecimiento. El sistema de circuitos por
microcontrolador detecta automáticamente el rango de voltaje, y
selecciona la frecuencia de funcionamiento correcta (50 o 60 Hz). Los
puntos de disparo por sobrevoltaje y bajo voltaje se definen en ± 10 %
del voltaje de línea ajustado. Cuando el valor medido en cualquier voltaje
de fase supera los límites de rango aceptables (inferior o superior), se
inicia el retardo de disparo. Al final del retardo de disparo, el relevador de
salida se desenergiza. Si el voltaje de fase regresa a un nivel aceptable
antes de cumplirse el retardo de disparo, el retardo de disparo se
restablecerá y el relevador de salida permanecerá energizado. El voltaje
bajo, sobrevoltaje, desbalance de voltaje y la frecuencia alta o baja
deben ser detectados en el retardo de disparo completo antes de que
la unidad se active. La unidad se activa en 200 ms al detectarse una
inversión de fase o pérdida de fase. La unidad no se energizará si se
detecta una falla cuando se aplica el voltaje de línea.
Restablecer: el restablecimiento es automático cuando se corrige el
voltaje, las fallas en la frecuencia o la secuencia de fases.
Opciones de retardo de restablecimiento
L = Tiempo de bloqueo o apagado mínimo. El retardo de
restablecimiento comienza al activarse el relevador de salida. La
unidad no puede ser reenergizada antes de finalizar el retardo de
restablecimiento. Esto brinda un tiempo de apagado mínimo o tiempo
de bloqueo que permite que el equipo sensible realice un ciclo corto, o
asigne un tiempo de restablecimiento. Si la falla es corregida luego de
completarse el retardo de restablecimiento, el relevador de salida se
energizará de inmediato. El retardo de restablecimiento ocurre también
cuando se aplica o se vuelve a aplicar el voltaje de línea.
R = Retardo de restablecimiento cuando se corrige la falla. El retardo
de restablecimiento se inicia cuando el voltaje de línea es aplicado
nuevamente o cuando se corrige una falla de voltaje. Esta opción
normalmente se selecciona cuando se requiere restablecimiento
escalonado de múltiples motores en un sistema de alimentación.
N = Sin retardo de restablecimiento. Retardo de inicialización de 0,6 s en
aplicaciones con voltajes de línea.
Notas sobre el restablecimiento: Todas las opciones de
restablecimiento permanecen reiniciadas al detectarse las condiciones a
continuación.
1. Pérdida de fase (desbalance de fase mayor al 25 %)
2. Voltaje de línea promedio inferior a 120 V CA
3. Fase inversa
El retardo de restablecimiento inicia cuando se corrige una condición.
Funcionamiento LED
Los LED parpadean en verde durante el retardo de restablecimiento,
luego se iluminan en verde cuando el relevador de salida se energiza.
Parpadean en rojo durante el retardo de disparo y luego se iluminan en
rojo cuando el relevador de salida se desenergiza. Parpadean en verde o
rojo si se detecta una inversión de fase. Si se detecta una falla durante
el retardo de restablecimiento, los LED se encenderán en rojo durante
ese lapso o durante todo el retardo de restablecimiento.
Especificaciones
Voltaje de línea
Tipo Conexión en triángulo o en estrella trifásica sin
conexión a neutro
Voltaje de funcionamiento
200 - 480VAC Rango Ajuste de voltaje Rango Frecuencia
240 200-240 V CA 50 o 60 Hz
380 340-420 V CA 50 Hz
480 400-480 V CA 60 Hz
Voltaje de línea máximo 550 V CA
Frecuencia de línea CA 50/60 Hz detectada automáticamente
Pérdida de fase ≥ desbalance del 25 %
Tiempo de respuesta ≤200 ms
Bajo voltaje y desbalance de voltaje
Tipo Detección de voltaje con disparo retrasado y
restablecimiento automático
Sobrevoltaje
Voltaje de disparo 109-113 % del voltaje de línea ajustado
Voltaje de restablecimiento ≅ -3 % del voltaje de disparo
Bajo voltaje
Voltaje de disparo 88-92 % del voltaje de línea ajustado
Voltaje de restablecimiento ≅ +3 % del voltaje de disparo
Desbalance de voltaje
Punto de ajuste de disparo Ajustable 2-10 % o especificar desbalance fijo de
2-10 % en incrementos de 1 %
Restablecer al balancear ≅ desbalance de -0,7 %
Retardo de activación
Activar por Sobrevoltaje/bajo voltaje, desbalance de voltaje,
frecuencia alta/baja
Rango Ajustable de 1-30 s o especificar retardo fijo 1-30 s
en incrementos de 1 segundo
Tolerancia ± 15 %
Retardo de restablecimiento
Rango Ajustable de 0,6-300 s; si no elige un retardo
de restablecimiento, se aplica un retardo de
inicialización de 0,6 s
Tolerancia ± 15 %
Frecuencia alta o baja ± 4 %; Restablecimiento ± 3 %; 50/60 Hz
Secuencia de fase A, B, C, L1, L2, L3
Tiempo de respuesta-Fase
Fase inversa o pérdida de fase ≤200 ms
Restablecimiento Automático
Salida
Tipo Relevador electromecánico aislado
Forma DPDT
Clasificación nominal 10 A resistiva a 240 V CA;
8 A resistiva a 277 V CA; NO-1/4 HP a 120 V CA;
1/3 HP a 240 V CA
Duración Mecánico - 1 x 106
Eléctrica (a 10 A) - DPDT - 1 x 303
Protección
Averías/inversión de fase ASME A17.1 Directriz 210.6
Motores y generadores NEMA MG1 14:30, 14:35
Sobretensión IEEE C62.41-1991 Nivel B
Voltaje de aislamiento ≥ 2500 V RMS entre terminales de entrada y salida
Sistema de circuitos Encapsulado
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10 (M5 x 0.7)
Nota: se requiere un espacio de 6,35 mm
(0,25 in) entre unidades u otros dispositivos
Dimensiones H 76,7 mm (3"); A 50,8 mm (2");
P 41,7 mm (1,64")
Terminación Conexión de terminal de tornillo para cable de
3,3 mm2
(12 AWG)
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
www.littelfuse.com/hlmu
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 229
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/plmu11
PLMU11
Monitor de voltaje
Descripción
El PLMU11 mide constantemente el voltaje de cada una de las tres
fases para brindar protección para motores trifásicos y cargas sensibles.
Su microcontrolador detecta sobrevoltaje y bajo voltaje, desbalance de
voltaje, pérdida de fase e inversión de fase. Protege incluso cuando hay
voltajes regenerados. El funcionamiento de voltaje universal y conexión
de base estándar permite que el PLMU11 reemplace cientos de
números de partes de la competencia.
Funcionamiento
Cuando se aplica energía, se inicia un retardo de inicio aleatorio de
0,6 s y el PLMU11 mide los niveles de voltaje y la frecuencia de línea
y selecciona el rango de voltaje. El relevador de salida se energiza y
los LED se iluminan en verde cuando todos los niveles de voltaje son
aceptables y la secuencia de fase es la correcta. Los LED parpadean
en verde durante el retardo de disparo, se encienden en rojo cuando
el relevador de salida se desenergiza. El sobrevoltaje, bajo voltaje y el
desbalance de voltaje deben ser detectados por retardo de disparo
continuo antes de reenergizar el relevador. La reenergización es
automática luego de una corrección de falla. El relevador de salida no
se energizará si se detecta una condición de falla al aplicar un voltaje
de entrada trifásico. Los LED parpadean de forma intermitente en rojo/
verde al detectar una inversión de fase. El voltaje de línea se selecciona
con la perilla, ajustando los puntos de disparo por sobrevoltaje y bajo
voltaje. El rango de voltaje se selecciona automáticamente por el
microcontrolador.
Indicador LED
Verde sólido Energizado
Rojo sólido Desenergizado (activado por falla)
Parpadeando en verde Retardo de activación
Parpadeando entre rojo y verde Inversión de fase
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Montaje rápido octal de
8 pines
Área de instalación pequeña con montaje universal:
reemplazo ideal para cientos de números de partes de la
competencia.
Circuito basado
en microcontrolador del
propietario
Monitoreo constante de condiciones de voltaje
monofásico, voltaje bajo, voltaje alto, desbalance de
voltaje, inversión de fase.
Diagnósticos LED
Indicador visual rápido sobre causas de la activación. Las
indicaciones LED incluyen: funcionamiento normal, retardo
de disparo, inversión de fase, fallas
Contactos de salida SPDT
aislados de 10 A Permiten controlar las cargas para voltaje de CA
Conexión directa con
3 cables para sistemas con
conexión en triángulo o en
estrella
Brinda flexibilidad en un amplio rango de sistemas
ASME A17.1 Directriz 210.6 Cumple con códigos de seguridad para elevadores,
escaleras eléctricas, pasillos rodantes
NEMA MG1 14:30, 14:35 Cumple con códigos de seguridad para motores
y generadores
IEEE C62.41-1991 Nivel B Cumple con códigos de seguridad para protección contra
sobretensión y bajo voltaje
Diagrama de conexiones
F = Fusibles
ØA = Fase A = L1
ØB = Fase B = L2
ØC = Fase C = L3
NO = Normalmente abierta
NC = Normalmente cerrada
Fusibles de activación rápida de
2 A de seguridad
(no requerido).
Los contactos del relevador
están aislados
8 PINES
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 32.
230 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
PLMU11
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes y otros controles.
Conector octal de 8 pines OT08PC
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 600 V CA.
Montaje en superficie con dos tornillos o anillos de
presión n.º 6 en un riel DIN de 35 mm.
LPSM003ZXID (con indicación),
LPSM003Z (sin indicación) Portafusibles
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para
fusibles Clase CC y microfusibles. 600 VCA/CC
Microfusible 0KLK002.T (2 amperios)
Fusible de 10 x 38 de activación rápida, alta
capacidad de corte y de tipo limitador de corriente.
600 V CA/500 V CC
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Especificaciones
Voltaje de línea
Tipo Conexión en triángulo y en estrella trifásica sin
conexión a neutro
Voltaje de línea 200 a 480 V CA ± 15 %, 50/60 Hz ± 2 Hz
Rangos de voltaje ajustables
(Selección de rango automático) 200 a 240 V CA, 50/60 Hz
340 a 420 V CA, 50 Hz
400 a 480 V CA, 60 Hz
Voltaje máximo 552 V CA
Secuencia de fase ABC
Consumo de energía ≤ 5 W
Sobrevoltaje, bajo voltaje,
y desbalance de voltaje
Tipo Detección de voltaje con disparo retrasada y
restablecimiento automático
Sobrevoltaje y bajo voltaje
Punto de disparo por bajo voltaje 88-92 % del voltaje de línea ajustado
Voltaje de restablecimiento +2 % del voltaje de disparo
Punto de disparo por sobrevoltaje 109-113 % del voltaje de línea ajustado
Voltaje de restablecimiento -2 % del voltaje de disparo
Punto de disparo por desbalance
de voltaje ajustable de 2-10 %
Restablecer al balancear (%)
Desbalance seleccionado 2 3 4 5 6 7 8 9 10
Restablecimiento 1,5 2,5 3,5 4,5 5,4 6,3 7,2 8,1 9
Rango de retardo de disparo Ajustable de 0,25-30 s
Desbalance severo 2X el balance seleccionado 0,25-2 s; desactivado cuando el retardo de disparo
es menor a 2 s
Retardo de inicio aleatorio ≅ 0,6 s
Fase normal y fase de inversión
Tiempo de disparo por pérdida ≤ 150 ms
Punto de ajuste de pérdida de fase ≥ 15 % de desbalance
Tipo de restablecimiento Automático
Tipo de salida Energizado cuando los niveles de voltaje son
aceptables
Tipo Relevador electromecánico
Forma Aislada, SPDT
Clasificación nominal 10 A resistiva a 240 V CA; 1/4 HP a 125 V CA; 1/3 HP
a 250 V CA; máximo 277 V CA
Duración Mecánica - 1 x 106
; Eléctrica - 1 x 105
Protección
Sobretensión IEEE C62.41-1991 Nivel B
Voltaje de aislamiento ≥ 2500 V RMS entre terminales de entrada y salida
Mecánica
Montaje* Conector directo nominal de 600 V CA
Terminación Conector octal de 8 pines
Dimensiones H 77 mm (3,03"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Peso ≅ 244 g (8,6 oz)
*PRECAUCIÓN: Seleccione un conector octal nominal para operaciones de 600 V CA.
www.littelfuse.com/plmu11
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 231
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/plm
SERIE PLM
Monitor de voltaje
Descripción
La serie PLM es un monitor de voltaje trifásico que monitorea
constantemente cada una de las tres fases. Monitorea sistemas con
conexión en triángulo y en estrella, y no se requiere conexión a neutro.
Su diseño basado en un circuito de microcontrolador protege contra
bajo voltaje, desbalance de voltaje, pérdida de fase e inversión de fase.
Protege incluso cuando hay voltajes regenerados.
Funcionamiento
El relevador de salida se energiza y los LED se iluminan en verde cuando
todos los niveles de voltaje son aceptables y la secuencia de fase es la
correcta. El sobrevoltaje y bajo voltaje, y el desbalance de voltaje deben
ser detectados por retardo de disparo continuo antes de reenergizar el
relevador. El restablecimiento es automático al corregir una condición de
falla. El relevador de salida no se energizará si se detecta una condición
de falla al aplicar energía. Los LED de color rojo parpadean durante el
retardo de disparo y luego se iluminan en rojo cuando el relevador de
salida se desenergiza. Los LED parpadean en verde o rojo si se detecta
una inversión de fase.
Ajuste en el campo
Ajuste la perilla de control de voltaje en la línea de voltaje deseada para
el equipo. Este ajuste define automáticamente el punto de disparo por
bajo voltaje. Permita el paso de energía. Si el PLM no se energiza (LED
parpadea en rojo), verifique la conexión de las tres fases, el voltaje y
la secuencia de fase. Si la secuencia de fase es incorrecta, los LED
parpadearán en verde o rojo. Para corregirlo, cambie cualquiera de las
dos conexiones de voltaje de línea a un conector de montaje. No se
requieren ajustes adicionales.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Montaje rápido octal de
8 pines
Área de instalación pequeña con montaje universal:
reemplazo ideal para cientos de números de parte de la
competencia.
Circuito basado en
microcontrolador del
propietario
Monitoreo constante de condiciones de voltaje
monofásico, voltaje bajo, voltaje alto, desbalance de
voltaje, inversión de fase.
Diagnósticos LED Indicador visual rápido para disparo contra funcionamiento
normal.
Contactos de salida SPDT
aislados de 10 A Permiten controlar las cargas para voltaje de CA
Punto de ajuste de voltaje
nominal ajustable
Permite configurar el voltaje específico de una
aplicación para optimizar la protección
Conexión directa con
3 cables para sistemas con
conexión en triángulo o en
estrella
Brinda flexibilidad en un amplio rango de sistemas
ASME A17.1 Directriz 210.6 Cumple con códigos de seguridad para elevadores,
escaleras eléctricas, pasillos rodantes
NEMA MG1 14:30, 14:35 Cumple con códigos de seguridad para motores y
generadores
IEEE C62.41-1991 Nivel B Cumple con códigos de seguridad para protección contra
sobretensión y bajo voltaje
Información para pedir
MODELO VOLTAJE DE
LÍNEA
DESBALANCE DE
VOLTAJE (FIJO)
RETARDO DE DISPARO
(FIJO)
PLM6405 240 V CA 4 % 5 s
PLM6502 240 V CA 5 % 2 s
PLM6805 240 V CA 8 % 5 s
PLM8405 380 V CA 4 % 5 s
PLM9405 480 V CA 4 % 5 s
PLM9502 480 V CA 5 % 2 s
PLM9805 480 V CA 8 % 5 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
F = Fusibles
ØA = Fase A = L1
ØB = Fase B = L2
ØC = Fase C = L3
NO = Normalmente abierta
NC = Normalmente cerrada
Fusibles de activación rápida de
2 A de seguridad (no requerido).
Los contactos del relevador están
aislados
8 PINES
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 23.
232 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
SERIE PLM
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes y otros controles.
Conector octal de 8 pines OT08PC
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 600 V CA.
Montaje en superficie con dos tornillos o anillos de
presión n.º 6 en un riel DIN de 35 mm.
LPSM003ZXID (con indicación),
LPSM003Z (sin indicación) Portafusibles
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para
fusibles Clase CC y microfusibles. 600 VCA/CC
Microfusible 0KLK002.T (2 amperios)
Fusible de 10 x 38 de activación rápida, alta
capacidad de corte y de tipo limitador de corriente.
600 V CA/500 V CC
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Especificaciones
Voltaje de línea
Tipo Conexión en triángulo o en estrella trifásica sin
conexión a neutro
Voltaje de funcionamiento
Modelo Ajustable Rango de
voltaje de línea
Voltaje de
línea máximo
240 200-240 V CA 270 V CA
380 360-430 V CA 480 V CA
480 400-480 V CA 530 V CA
Frecuencia de línea CA 50/100 Hz
Secuencia de fase ABC
Consumo de energía ≅ 2 W para unidades de 240 V
≅ 3 W para unidades de 380-480 V
Voltaje bajo y
desbalance de voltaje
Tipo Detección de voltaje con disparo retrasado y
restablecimiento automático
Voltaje bajo
Activación 88-92 % del voltaje de línea ajustado
Voltaje de restablecimiento Más del 3 % del voltaje de disparo
Desbalance de voltaje
Activación Fija de fábrica de 4-8 %
Restablecimiento al balancear -0,7 % del desbalance típico
Retardo de activación
Rango Fijo de fábrica de 2-20 s
Tolerancia ± 15 %
Pérdida de fase e inversión
de fase
Tiempo de respuesta ≤ 200 ms
Pérdida de fase > 35 % de desbalance
Restablecimiento Automático
Salida
Tipo Relevador electromecánico
Forma Aislada, SPDT
Clasificación nominal 10 A resistiva a 240 V CA, 277 V CA máximo.
1/2 Hp a 240 V CA; 1/4 Hp a 120 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sobretensión IEEE C62.41-1991 Nivel B
Voltaje de aislamiento ≥ 2500 V RMS entre terminales de entrada y salida
Mecánica
Montaje* Conector directo nominal de 8 pines de 600 V CA
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Peso ≅ 125 g (4,4 oz)
*PRECAUCIÓN: Seleccione un conector octal nominal para operaciones de 600 V CA.
www.littelfuse.com/plm
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 233
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tvw
SERIE TVW
Descripción
La serie TVW brinda protección para motores y otras cargas sensibles.
Mide constantemente el voltaje de cada una de las tres fases utilizando
un circuito basado en microcontrolador que detecta sobrevoltaje y
bajo voltaje, desbalance de voltaje, pérdida de fase e inversión de
fases. Protege incluso cuando hay voltajes regenerados. Incluye un
retardo de disparo para prevenir activaciones falsas y un retardo de
restablecimiento para prevenir ciclos cortos luego de un corte eléctrico
parcial.
Funcionamiento
Cuando se aplica el voltaje de línea, se inicia el retardo de
restablecimiento. El relevador de salida se desenergiza durante el
retardo de restablecimiento. En condiciones normales, el relevador de
salida se energiza luego del retardo de restablecimiento. El sobrevoltaje,
bajo voltaje y el desbalance de voltaje deben ser detectados por retardo
de disparo completo antes de desenergizar el relevador. El retardo de
restablecimiento se inicia tan pronto como se desenergice el relevador
de salida. Si el retardo de restablecimiento se completa al corregir
una falla, el relevador de salida se energiza de inmediato. El relevador
de salida no se energizará si se detecta una falla cuando se aplica el
voltaje de entrada. Si el selector de voltaje se ajusta entre dos marcas
de voltaje (p. ej., entre 220 y 230 V), los LED parpadearán en rojo
rápidamente. El TVW brinda protección contra fallas según el nivel más
bajo de los dos voltajes de línea (p. ej., 220 V).
Restablecimiento: el restablecimiento es automático al corregir una falla.
Funcionamiento LED
Los LED parpadean en verde durante el retardo de restablecimiento,
luego se iluminan en verde cuando el relevador de salida se energiza.
Parpadean en rojo durante el retardo de disparo y luego se iluminan en
rojo cuando el relevador de salida se desenergiza. Parpadean en verde
o rojo si se detecta una inversión de fase. Si la perilla del selector de
voltaje está entre los niveles de ajuste, se iluminará en rojo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante para proteger contra pérdida de fase,
inversión de fase, sobrevoltaje, bajo voltaje, desbalance de
voltaje y ciclo corto
Diseño compacto que mide
50,8 mm (2 in)
Ideal para aplicaciones de fabricantes originales donde los
costos, el tamaño y la facilidad de la instalación son
factores importantes
Indicación LED Proporciona diagnósticos de retardo, fallas y estado de
retardo del tiempo
Encapsulado Protege contra impactos, vibración y humedad
Información para pedir
MODELO VOLTAJE DE
LÍNEA
DESBALANCE
DE VOLTAJE
RETARDO DE
ACTIVACIÓN
RETARDO DE
RESTABLECIMIENTO
TVW5103S5S 208-240 V CA
seleccionable Fijo, 10 % Fijo, 3 s Fijo, 5 s
TVW575S1M 208-240 V CA
seleccionable Fijo, 7 % Fijo, 5 s Fijo, 1 m
TVW6510S0.4S 208, 220, 230,
240 V CA Fijo, 5 % Fijo, 10 s Fijo, 0,4 s
TVW8510S0.4S 380, 400 y
415 V CA Fijo, 5 % Fijo, 10 s Fijo, 0,4 s
TVW9510S0.4S 430, 440, 460,
480 V CA Fijo, 5 % Fijo, 10 s Fijo, 0,4 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
L1 = Fase A
L2 = Fase B
L3 = Fase C
NO = Normalmente abierta
NC = Normalmente cerrada
C = Sonda común, contacto de
transferencia
Los contactos del relevador están aislados.
F = Se recomienda utilizar fusibles de
activación rápida de 2 A, pero no es
obligatorio
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 44.
234 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
SERIE TVW
Accesorios
LPSM003ZXID (con indicación),
LPSM003Z (sin indicación) Portafusibles
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para
fusibles Clase CC y microfusibles. 600 VCA/CC
Microfusible 0KLK002.T (2 amperios)
Fusible de 10 x 38 de activación rápida, alta
capacidad de corte y de tipo limitador de corriente.
600 V CA/500 V CC
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un barril aislador para brindar
resistencia a la deformación.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Módulo de reducción de voltaje VRM6048
Permite que el monitor de voltaje detecte un voltaje
trifásico de 550 hasta un voltaje de línea de 600 V CA.
Especificaciones
Voltaje de línea
Tipo Conexión en triángulo o en estrella trifásica sin
conexión a neutro
Tolerancia/Voltaje de entrada 208 a 480 V CA en 4 rangos/-30 % - 20 %
Frecuencia de línea CA 50-100 Hz
Secuencia de fase ABC
Consumo de energía Aproximadamente 2 W para unidades de 240 V
Aproximadamente 3 W para unidades de 480 V
Sobrevoltaje, voltaje bajo,
y desbalance de voltaje
Sobrevoltaje y bajo voltaje Detección de voltaje con retardo de disparo y
restablecimiento automático
Punto de disparo por bajo voltaje 88-92 % del voltaje de línea seleccionado
Voltaje de restablecimiento ≅ +3 % del voltaje de disparo
Punto de disparo por
sobrevoltaje 109-113 % del voltaje de línea ajustado
Voltaje de restablecimiento ≅ -3 % del voltaje de disparo
Variación de retardo vs.
temperatura ≤ ± 2 %
Desbalance de voltaje Fijo de fábrica, de 4-10 %
Restablecer durante balanceo ≅ desbalance de -0,7 %
Rango de retardo de disparo Fijo desde 0,2 hasta 100 s ± 15 % o ± 0,1 s,
lo que sea mayor
Rango de retardo de
restablecimiento Fijo desde 0,4 s hasta 999 min ± 15 % o ± 0,2 s, lo que
sea mayor
Fases e inversión de fases
Respuesta ante pérdida ≤ 200 ms; restablecimiento automático
Pérdida de fase ≥ desbalance del 25 %
Salida
Tipo Aislado, SPDT
Clasificación nominal
208 a 240 V CA (55 °C) 10 A resistiva a 125 V CA, 5 A a 250 V CA,
1/4 HP a 125 V CA
380-480 V CA 10 A resistiva a 240 V CA, 1/4 HP a 125 V CA,
1/3 HP a 250 V CA, máximo voltaje 277 V CA
Duración Mecánica - 1 x 106
; Eléctrica - 1 x 105
Protección
Averías/inversión de fase ASME A17.1 Directriz 210.6
Motores y generadores NEMA MG1 14:30, 14:35
Sobretensión IEEE C62.41-1991 Nivel B
Voltaje disruptivo dieléctrico
208 a 240 V CA ≥ 1500 V RMS en terminales de entrada a salida
380 a 480 V CA ≥ 2500 V RMS en terminales de entrada a salida
Mecánica
Montaje Montaje de superficie con un tornillo n.º 8 (M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 31,75 mm (1,25")
Terminación Terminales de conector rápido macho de 6,35 mm (0,25 in)
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 55 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 79 g (2,8 oz)
www.littelfuse.com/tvw
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 235
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tvm
SERIE TVM
Descripción
La serie TVM brinda protección para motores y otras cargas sensibles.
Mide constantemente el voltaje de cada una de las tres fases utilizando
un circuito basado en microcomputador que detecta sobrevoltaje y
bajo voltaje, desbalance de voltaje, pérdida de fase e inversión de
fases. Protege incluso cuando hay voltajes regenerados. Incluye un
retardo de disparo para prevenir activaciones falsas y un retardo de
restablecimiento para prevenir ciclos cortos luego de un corte eléctrico
parcial.
Funcionamiento
Cuando se aplica el voltaje de línea, se inicia el retardo de
restablecimiento. El relevador de salida se desenergiza durante el
retardo de restablecimiento. En condiciones normales, el relevador de
salida se energiza luego del retardo de restablecimiento. El sobrevoltaje,
bajo voltaje y el desbalance de voltaje deben ser detectados por retardo
de disparo continuo antes de desenergizar el relevador de salida. El
relevador de salida no se desenergizará si se corrige una falla durante
el retardo del disparo. El retardo de restablecimiento se inicia tan
pronto como se desenergice el relevador de salida. Si el retardo de
restablecimiento se completa al corregir una falla, el relevador de salida
se energizará de inmediato.
El relevador de salida no se energizará si se detecta una falla o inversión
de fase al aplicar un voltaje de entrada trifásico.
Restablecimiento: el restablecimiento es automático al corregir una
falla.
Funcionamiento LED
Los LED parpadean en verde durante el retardo de restablecimiento,
luego se iluminan en verde cuando el relevador de salida se energiza.
Parpadean en rojo durante el retardo de disparo y luego se iluminan en
rojo cuando el relevador de salida se desenergiza. Parpadean en verde o
rojo si se detecta una inversión de fase.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Circuito basado en
microcontrolador del
propietario
Monitoreo constante para proteger contra pérdida de fase,
inversión de fase, sobrevoltaje, bajo voltaje, desbalance de
voltaje y ciclo corto
Diseño compacto que mide
50,8 mm (2 in)
Ideal para aplicaciones de fabricantes originales donde los
costos, el tamaño y la facilidad de la instalación son
factores importantes
Indicación LED Proporciona diagnósticos de retardo, fallas y estado de
retardo del tiempo
Encapsulado Protege contra impactos, vibración y humedad
Información para pedir
MODELO VOLTAJE DE
LÍNEA
DESBALANCE
DE VOLTAJE
RETARDO DE
ACTIVACIÓN
RETARDO DE
RESTABLECIMIENTO
TVM208A100.5S3S 208 V CA 10 % 0,5 s 3 s
TVM230A101S1S 230 V CA 10 % 1 s 1 s
TVM460A41S5M 460 V CA 4 % 1 s 5 m
TVM460A75S2M 460 V CA 7 % 5 s 2 m
TVM480A45S5S 480 V CA 4 % 5 s 5 s
TVM480A100.5S3S 480 V CA 10 % 0,5 s 3 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
L1 = Fase A
L2 = Fase B
L3 = Fase C
NO = Normalmente abierta
NC = Normalmente cerrada
C = Sonda común o contacto de
transferencia
Los contactos del relevador están aislados.
F = Se recomienda utilizar fusibles de
activación rápida de 2 A, pero no es
obligatorio
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 44.
236 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
SERIE TVM
Accesorios
LPSM003ZXID (con indicación),
LPSM003Z (sin indicación) Portafusibles
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para
fusibles Clase CC y microfusibles. 600 VCA/CC
Microfusible 0KLK002.T (2 amperios)
Fusible de 10 x 38 de activación rápida, alta
capacidad de corte y de tipo limitador de corriente.
600 V CA/500 V CC
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Módulo de reducción de voltaje VRM6048
Permite que el monitor de voltaje detecte un voltaje
trifásico de 550 hasta un voltaje de línea de 600 V CA.
Especificaciones
Voltaje de línea
Tipo Conexión en triángulo y en estrella trifásica sin
conexión a neutro
Voltaje de entrada 208-480 V CA
Frecuencia de línea CA 50-100 Hz
Secuencia de fase ABC
Consumo de energía Aproximadamente 2 W para unidades de 240 V
Aproximadamente 3 W para unidades de 480 V
Sobrevoltaje, voltaje bajo, y desbalance de voltaje
Sobrevoltaje y bajo voltaje Detección de voltaje con retardo de disparo y
restablecimiento automático
Punto de disparo por bajo voltaje 88-92 % del voltaje de línea seleccionado
Voltaje de restablecimiento ≅ +3 % del voltaje de disparo
Punto de disparo por sobrevoltaje 109-113 % del voltaje de línea ajustado
Voltaje de restablecimiento ≅ -3 % del voltaje de disparo
Variación de retardo vs.
temperatura ≤ ± 2 %
Desbalance de voltaje Fijo desde fábrica de 4-10 %
Restablecer durante balanceo ≅ desbalance de -0,7 %
Rango de retardo de disparo Fijo desde 0,2 hasta 100 s ± 15 % o ± 0,1 s,
lo que sea mayor
Rango de retardo de
restablecimiento Fijo desde 0,5 s hasta 999 min ± 15 % o ± 0,2 s,
lo que sea mayor
Fases e inversión de fases
Respuesta ante pérdida ≤ 200 ms; restablecimiento automático
Pérdida de fase ≥ desbalance del 25 %
Salida
Tipo Contactos de relevador SPDT aislados
Clasificación nominal
208-240 V CA (55 °C) 10 A resistiva a 125 V CA, 5 A a 250 V CA,
1/4 HP a 125 V CA
380-480 V CA 10 A resistiva a 240 V CA, 1/4 HP a 125 V CA,
1/3 HP a 250 V CA, máximo voltaje 277 V CA
Duración Mecánica - 1 x 106
; Eléctrica - 1 x 105
Protección
Averías/inversión de fase ASME A17.1 Directriz 210.6
Motores y generadores NEMA MG1 14:30, 14:35
Sobretensión IEEE C62.41-1991 Nivel B
Voltaje disruptivo dieléctrico
208 a 240 V CA ≥ 1500 V RMS en terminales de entrada a salida
380-480 V CA ≥ 2500 V RMS en terminales de entrada a salida
Mecánica
Montaje Montaje de superficie con un tornillo n.º 8 (M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 31,75 mm (1,25")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 55 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 79 g (2,8 oz)
www.littelfuse.com/tvm
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 237
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/plr
SERIE PLR
Descripción
La serie PLR brinda un medio económico para prevenir encendidos de
motores trifásicos durante condiciones de voltaje adversas. La correcta
secuencia A-B-C debe ocurrir para que los contactos de salida del PLR
se energicen. Además, el relevador no se energizará cuando ocurra una
condición de pérdida de fase o bajo voltaje. La serie PLR protege un
motor contra su funcionamiento con bajo voltaje. La perilla de ajuste
define el punto de disparo por bajo voltaje.
Funcionamiento
El relevador de salida se energiza y los LED se iluminan cuando todos
los niveles de voltaje son aceptables y la secuencia de fase es la
correcta. El bajo voltaje debe detectarse por un período de retardo
de reducción continuo antes de que el relevador se desenergice. El
restablecimiento es automático al corregir una condición de falla. El
relevador de salida no se energizará si se detecta una condición de falla
al aplicar energía.
Ajuste en el campo: gire la perilla de ajuste hacia la izquierda por
completo y permita el paso de corriente trifásica. Los LED deberían
iluminarse. Aumente el nivel hasta que el LED se apague. Reduzca el
nivel hasta que el LED se ilumine nuevamente. Si ocurre un disparo
perjudicial, reduzca el nivel levemente.
NOTA: Cuando está ajustado correctamente y funciona en un sistema promedio, se requiere un desbalance de
voltaje del 10 % o más para detectar una pérdida de fase. Cuando se pierde una fase durante el funcionamiento
del motor, se inducirá el voltaje en la fase abierta con mayor similitud en magnitud hasta el voltaje entre fases
normal. Esta condición se conoce como regeneración. Cuando existe un voltaje regenerado, el desbalance de
voltaje durante la fase individual no podrá exceder del 10 % para algunos motores. Es posible que la serie PLR
no brinde protección bajo tales circunstancias. Para sistemas que requieren de protección contra pérdida de
fase superior, elija la serie PLMU.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Monitoreo continuo Previene el encendido de motores trifásicos ante un bajo
voltaje o pérdida de fase
Conexión por conector octal
de 8 pines estándar del
sector
Elimina la necesidad de utilizar conectores especiales
Indicación LED Indicación visual rápida del estado del relevador de salida y
la secuencia de fase correcta
Información para pedir
MODELO VOLTAJE DE LÍNEA
PLR120A 95-140 V CA
PLR240A 190-270 V CA
PLR380A 340-450 V CA
PLR480A 380-500 V CA
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
F = Fusibles
ØA = Fase A = L1
ØB = Fase B = L2
ØC = Fase C = L3
NO = Normalmente abierta
NC = Normalmente cerrada
Los contactos del relevador están
aislados
Fusibles de disparo rápida de 2 A de seguridad
(no requerido).
8 PINES
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 23.
238 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
SERIE PLR
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines OT08PC
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 600 V CA.
Montaje en superficie con dos tornillos o anillos de
presión n.º 6 en un riel DIN de 35 mm.
LPSM003ZXID (con indicación),
LPSM003Z (sin indicación) Portafusibles
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para
fusibles Clase CC y microfusibles. 600 VCA/CC
Microfusible 0KLK002.T (2 amperios)
Fusible de 10 x 38 de activación rápida, alta
capacidad de corte y de tipo limitador de corriente.
600 V CA/500 V CC
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Especificaciones
Voltaje de línea
Tipo Conexión en triángulo o en estrella trifásica sin
conexión a neutro
Voltaje nominal
Ajuste de reducción de
voltaje insuficiente rango
Voltaje de
línea máximo
120 V CA 85-130 V CA 143 V CA
240 V CA 170-240 V CA 270 V CA
380 V CA 310-410 V CA 480 V CA
480 V CA 350-480 V CA 530 V CA
Frecuencia de línea 50/60 Hz
Secuencia de fase ABC
Tiempos de respuesta
Corriente de enganche ≤ 400 ms
Corriente de desconexión ≤ 100 ms
Histéresis
Corriente de enganche/Corriente
de desconexión ≅ 2 %
Salida
Tipo Relevador electromecánico, energizado cuando
todos los niveles de voltaje son aceptables
Forma SPDT
Clasificación nominal 5 A resistiva a 240 V CA, 1/4 HP a 120 V CA
Voltaje máximo 250 V CA
Protección
Averías/inversión de fase ASME A17.1 Directriz 210.6
Motores y generadores NEMA MG1 14:30, 14:35
Sobretensión IEEE C62.41-1991 Nivel B
Voltaje de aislamiento
120 y 240 V CA ≥ 1500 V RMS en terminales de entrada a salida
380 y 480 V CA ≥ 2500 V RMS en terminales de entrada a salida
Mecánica
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Montaje* Conexión por puerto
Terminación Conector octal de 8 pines
Entorno
Temperatura de funcionamiento/
almacenamiento 0 °C a 55 °C/-40 °C a 85 °C
Peso ≅ 170 g (6 oz)
*PRECAUCIÓN: Seleccione un conector octal nominal para operaciones de 600 V CA.
www.littelfuse.com/plr
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 239
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pls
SERIE PLS
Descripción
La serie PLS es un control de fases sensible de bajo costo que brinda
un cierre de contacto aislado cuando se aplica una secuencia de fase
A-B-C correcta. Protege equipo trifásico sensible y operarios de equipo
de la rotación inversa. Diseñado para ser compatible con sobrecargas en
motores o dispositivos de protección de equipo trifásico. Protección para
centros de control de equipo donde la reconexión regular o los códigos
eléctricos hacen que la protección de rotación inversa sea fundamental.
Ejemplos: contenedores móviles refrigerados, equipo de construcción,
montacargas, bombas, cintas transportadoras, elevadores y escaleras
mecánicas.
Funcionamiento
El relevador interno y los LED se energizan cuando la secuencia de fase
es la correcta. El relevador de salida no se energizará si las fases están
invertidas. El restablecimiento es automático al corregir una falla.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Monitoreo continuo
Protección económica para equipo trifásico y operarios contra
la rotación inversa. Conforme con los requisitos del código de
protección de rotación inversa.
Compatibilidad con
motores universales
Diseñado para ser compatible con sobrecargas en motores o
dispositivos de protección de equipo trifásico
Conexión por conector
octal de 8 pines estándar
del sector
Elimina la necesidad de utilizar conectores especiales
Calibrado desde fábrica Fácil de instalar. No requiere ajustes en el campo
Indicador LED Proporciona indicaciones visuales sobre el estado del relevador
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 600 V CA.
Montaje en superficie con dos tornillos o anillos de
presión n.º 6 en un riel DIN de 35 mm.
LPSM003ZXID (con indicación),
LPSM003Z (sin indicación) Portafusibles
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para
fusibles Clase CC y microfusibles. 600 VCA/CC
Microfusible 0KLK002.T (2 amperios)
Fusible de 10 x 38 de activación rápida, alta
capacidad de corte y de tipo limitador de corriente.
600 V CA/500 V CC
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Información para pedir
MODELO VOLTAJE DE LÍNEA
PLS120A 120 V CA
PLS240A 208/240 V CA
PLS480A 440/480 V CA
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
F = Fusibles
ØA = Fase A = L1
ØB = Fase B = L2
ØC = Fase C = L3
NO = Normalmente abierta
NC = Normalmente cerrada
Los contactos del relevador están
aislados
Fusibles de disparo rápida de 2 A de seguridad
(no requerido).
8 PINES
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 33.
240 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
SERIE PLS
Especificaciones
Voltaje de línea
Tipo Conexión en triángulo o en estrella trifásica sin
conexión a neutro
Voltaje mínimo Voltaje nominal Voltaje
máximo
120 V CA 95 V CA 135 V CA
208/240 V CA 175 V CA 255 V CA
380/415 V CA 310 V CA 430 V CA
440/480 V CA 380 V CA 500 V CA
Frecuencia de línea 50/60 Hz
Secuencia de fase ABC
Tiempos de respuesta
Corriente de enganche ≤ 300 ms
Corriente de desconexión ≤ 50 ms
Salida
Tipo Relevador electromecánico, energizado cuando la
secuencia de fase es la correcta
Forma Aislada, SPDT
Clasificación nominal
120 y 240 V CA 10 A resistiva a 240 V CA
380 y 480 V CA 8 A resistiva a 240 V CA
Voltaje máximo 250 V CA
Protección
Voltaje de aislamiento
120 y 240 V CA ≥ 1500 V RMS en terminales de entrada a salida
380 y 480 V CA ≥ 2500 V RMS en terminales de entrada a salida
Mecánica
Montaje* Conexión por puerto
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 pines
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 55 °C/-40 °C a 85 °C
Peso ≅ 170 g (6 oz)
*PRECAUCIÓN: Seleccione un conector octal nominal para operaciones de 600 V CA.
www.littelfuse.com/pls
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 241
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hlva6i23
HLVA6I23
Monitor monofásico
Descripción
El HLVA6I23 es un monitor de bajo voltaje monofásico diseñado para
proteger equipo sensible de condiciones como caídas de tensión y bajo
voltaje. Retardos de tiempo incluidos para prevenir activaciones falsas
y ciclos cortos. Los contactos de relevador SPDT de 30 A y capacidad
nominal de 1 HP permiten el control directo de motores, válvulas y
solenoides. El relevador de salida puede pedirse con un contacto SPDT
aislado para permitir el monitoreo de un voltaje y conmutar otro voltaje
separado. Dos rangos de punto de disparo por bajo voltaje permiten
monitorear sistemas de 110-120 V CA o 208-240 V CA.
Funcionamiento
Luego de aplicar el voltaje de entrada al relevador de salida, este
permanece desenergizado. Cuando el valor del voltaje de entrada es
superior al voltaje de la corriente de enganche, se inicia el retardo de
restablecimiento. Al final del retardo de restablecimiento, el relevador
de salida se energiza. Cuando el voltaje de entrada cae por debajo del
punto de disparo, se inicia el retardo de disparo. Si el voltaje de entrada
permanece por debajo del voltaje de la corriente de enganche durante el
retardo de disparo, el relevador se desenergiza. Si el voltaje de entrada
regresa a un valor inferior al voltaje de enganche, durante el retardo de
disparo, el retardo se restablecerá y el relevador permanece energizado.
Si el voltaje de entrada cae por debajo del voltaje del punto de disparo
durante el retardo de restablecimiento, el retardo se restablecerá y el
relevador permanece desenergizado. El restablecimiento es automático
al corregir una falla por bajo voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece el
relevador de salida y los retardos de tiempo.
Características
J Contactos de salida NO, SPDT de 30 A
J Voltaje de entrada de 100-240 V CA
J Punto de disparo por bajo voltaje ajustable en 2 rangos de
70-220 V CA
J Retardos de restablecimiento de 3-300 s
J Retardo de disparo de 1-20 s fijo
J Contactos de relevador con o sin aislamiento
Diagrama de conexiones
V = Voltaje
NO = Normalmente abierta
NC = Normalmente cerrada
C = Común
T1 = Punto de disparo por bajo voltaje
T2 = Retardo de restablecimiento
L1 N/L2
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Conector rápido P1015-18 para adaptador de
pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 17.
242 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
HLVA6I23
Especificaciones
Entrada
Voltaje RMS máximo y mínimo 70-264 V CA
Frecuencia de línea CC 50/60 Hz
Consumo de energía CA ≤ 4 VA
Detección de bajo voltaje
Tipo Detección de voltaje pico
Rangos
(4) 70-120 V CA
(6) 170-220 V CA
Voltaje de enganche 105 % del voltaje del punto de disparo
Exactitud del punto de disparo ± 3 % del punto de disparo
Retardo de tiempo
Retardos de restablecimiento Ajustable de 3-300 s
Retardo de disparo 1-20 s fijo en incrementos de 1 s
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs. temperatura
y voltaje ≤ ± 10 %
Salida
Tipo Relevador electromecánico
Forma SPDT
Clasificaciones nominales SPDT-NO SPDT-NC
Propósito general 125/240 V CA 30 A 15 A
Resistiva 125/240 V CA 30 A 15 A
28 V CC 20 A 10 A
Carga del motor 125 V CA 1 HP* 1/4 HP**
240 V CA 2 HP** 1 HP**
Duración Mecánica - 1 x 106
Eléctrica - 1 x 105
, *3 x104
, **6000
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y salida;
unidades aisladas
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10 (M5 x 0.8)
Dimensiones H 76,7 mm (3"); A 51,3 mm (2");
P 38,1 mm (1,5")
Terminación Conectores rápidos machos de 6,35 mm (0,25 in)
Entorno
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
tr = Retardo de restablecimiento
td = Retardo de disparo
PI = Corriente de enganche del
105 % o punto de disparo
TP = Punto de activación
V = Voltaje monitoreado
IV = Voltaje de entrada
C-NO = Contactos
normalmente abiertos
C-NC = Contactos
normalmente cerrados
PI
TP
V
C-NO
C-NC
IV
Diagrama de funciones
www.littelfuse.com/hlva6i23
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 243
Relevadores de protección
Relevadores de monitoreo de voltaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/kvm
SERIE KVM
Descripción
La serie KVM es un monitor de bajo voltaje monofásico diseñado para
proteger equipo sensible de condiciones como caídas de tensión y bajo
voltaje. Su diseño compacto y construcción encapsulada hacen de la
serie KVM una excelente opción para equipo de fabricantes originales.
Funcionamiento
El relevador de salida se energiza y los LED se iluminan en verde cuando
el voltaje de entrada es superior al límite de voltaje de restablecimiento.
Si el voltaje de entrada cae por debajo del punto de ajuste de bajo
voltaje, el relevador de salida y los LED se energizarán. El relevador de
salida permanecerá desenergizado en la medida en que el voltaje de
entrada sea inferior al voltaje de restablecimiento. El restablecimiento es
automático cuando el voltaje de entrada alcanza un rango normal.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Monitoreo continuo Protección contra bajo voltaje (caída de tensión)
monofásico de bajo costo
Diseño compacto que mide
50,8 mm (2 in)
Ideal para aplicaciones de fabricantes originales donde los
costos, el tamaño y la facilidad de instalación son factores
importante.
Indicación LED Indicación visual rápida del estado del relevador de salida
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de
pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = LED
S = Punto de ajuste de bajo
voltaje
NO = Normalmente abierta
NC = Normalmente cerrada
C = Sonda común, contacto
de transferencia
Información para pedir
MODELO VOLTAJE DE LÍNEA MÁXIMO PUNTO DE AJUSTE
DE BAJO VOLTAJE
KVM4 132 V CA Ajustable, 78-99 V CA
KVM6 264 V CA Ajustable, 156-199 V CA
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
244 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Relevadores de monitoreo de voltaje
SERIE KVM
Especificaciones
Voltaje de línea
Tipo Monofásico
Voltaje de entrada 110-120 V CA o 220-240 V CA
Frecuencia de línea CC 50/60 Hz
Consumo de energía 2,5 W a 132 V CA; 4,5 W a 264 V CA
Tiempo de restablecimiento
para apagado ≤ 150 ms
Detección de bajo voltaje
Punto de ajuste de bajo voltaje
KVM4 78-99 V CA
KVM6 156-199 V CA
Punto de restablecimiento por
bajo voltaje
KVM4 Fijo a 104 V CA
KVM6 Fijo a 209 V CA
Repetibilidad ± 0,5 % en condiciones fijas
± 1 % sobre un rango de temperatura
Exactitud de la detección de voltaje ± 2 % a 25 °C
Salida
Tipo Relevador electromecánico
Forma SPDT
Clasificación nominal 8 A resistiva a 120 V CA, 1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 106
; Eléctrica - 1x105
Indicador LED Se ilumina en verde cuando el relevador de salida se
energiza
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y salida
Resistencia de aislamiento ≥ 100 MΩ mínimo
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10 (M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de 6,35 mm (0,25 in)
Entorno
Temperatura de funcionamiento/
almacenamiento -25 °C a 55 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso 74 g (2,6 oz)
Diagrama de funciones
TP = Punto de ajuste
de bajo voltaje
R = Punto de restablecimiento
www.littelfuse.com/kvm
MONITORES DE SISTEMAS DE CA/SENSORES DE CARGA
9
©2018 Controladores y Relevadores de Protección de Littelfuse 245 www.littelfuse.com/relayscontrols
Relevadores de protección
MONITOREO E INDICACIÓN REMOTOS
10
Conocimientos aplicados | Respuestas entregadas
MONITOREO E INDICACIÓN REMOTOS
Mejora la seguridad del personal de operaciones y servicio permitiendo controlar y
monitorear el relevador sin abrir el tablero eléctrico.
Serie RM1000 Monitor remoto..............................................................246
Serie RM2000 Monitor remoto..............................................................248
Informer Herramienta de diagnóstico remoto..............................250
Informer-MS Herramienta de diagnóstico remoto..............................252
246 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Monitoreo e indicación remotos
MONITOREO E INDICACIÓN REMOTOS
10
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/rm1000
SERIE RM1000
Descripción
La serie RM1000 es un dispositivo de monitoreo de motores que se
utiliza en conjunto con la familia de productos 777 (sin incluir la Serie
P1), la familia de productos 77C y los monitores de voltaje 601, a través
del protocolo Modbus con un módulo de comunicaciones. El sistema de
administración de motor RM1000/777 combina la insuperable protección
de motores electrónicos y el monitoreo de motores fácil de utilizar.
La serie RM1000 puede monitorear hasta 16 unidades MotorSaver® o
PumpSaver® en una red RS-485 utilizando el protocolo Modbus RTU. Un
puerto de comunicación auxiliar permite monitorear y controlar hasta
99 unidades MotorSaver® o PumpSaver® de un computador, PLC, DCS
o sistema SCADA y permite el acceso desde una computadora central
o PLC con el RM1000 actuando como repetidor de cualquiera de sus
protectores de motores. Además de las funciones de monitoreo, el
RM1000 puede ser utilizado para restablecer unidades MotorSaver® o
PumpSaver® activadas.
La serie RM1000 permite una instalación remota directa y mejora la
seguridad para el personal de operaciones y servicio permitiéndoles
controlar y monitorear el dispositivo sin abrir el tablero eléctrico. El
RM1000 es una opción simple y económica para lograr la conformidad
con los reglamentos sobre seguridad de arco eléctrico. La carcasa y el
ensamble del teclado son resistentes al agua y a la luz ultravioleta. La
carcasa tiene clasificación NEMA 3R o NEMA 4X (opcional). El RM1000
y el RM1000 NEMA 4 también tienen clasificación UL Tipo 12, en
tanto que el RM1000-3R no tiene clasificación UL Tipo 12 debido a los
orificios de drenaje adicionales. Los orificios de drenaje adicionales en
el RM1000-3R lo hacen ideal para aplicaciones donde hay humedad y
condensación.
Monitor remoto
Diagrama de conexiones
Información para pedir
MODELO DESCRIPCIÓN
RM1000 NEMA 3R o UL Tipo 12
RM1000-3R NEMA 3R
RM1000 NEMA 4 NEMA 4X
NOTA: Todas las conexiones
para protección de la red se
omiten para brindar claridad.
RS485 MODBUS MASTER
ESCRITORIO DE PC PORTÁTIL,
PLC, DCS O SCADA
V CC 15 m
(50 ft) MÁX.
RED RS485
1220 m (4000 ft)
MÁX.
MODELO 777
DISPOSICIÓN N.º 3
MODELO 777
DISPOSICIÓN N.º 2
MODELO 777
DISPOSICIÓN N.º 2
HASTA 99 UNIDADES 777
MODELO RS485MS-2W
MODELO RS485MS-2W
Para conocer el plano de dimensiones, consulte: Apéndice, página 508, Figura 4.
©2018 Controladores y Relevadores de Protección de Littelfuse 247
Relevadores de protección
Monitoreo e indicación remotos
MONITOREO E INDICACIÓN REMOTOS
10
Conocimientos aplicados | Respuestas entregadas
SERIE RM1000
Características
Indicaciones:
J Corrientes de línea individuales y corriente promedio
J Corriente y desbalance de voltaje
J Voltajes de fase individuales y voltaje promedio
J Indica las últimas 4 fallas, causas del disparo y estado del
temporizador de restablecimiento
J Puntos de ajuste de MotorSaver® o PumpSaver®
J Horas de ejecución en cada motor
J Advertencia de fallas pendientes (inminentes)
Controles:
J Restablecimiento del medidor de horas de ejecución
J Restablecimiento de MotorSaver® o PumpSaver®
J Cambio de los puntos de ajuste desde el RM1000
Practicidad:
J Alimentación desde el módulo de comunicaciones RS485MS-2W
J Monitorea hasta 16 unidades 777 con una pantalla
J Clasificación para uso en exteriores NEMA 3R
J Carcasa auxiliar en acero disponible
Accesorios
Convertidor RS485-RS232 con cable y conector
Permite que los dispositivos RS485 se conecten a
una computadora mediante el puerto RS232 (serial).
Brinda bloques de terminal convenientes para generar
señales y conexiones de alimentación eléctrica CC
Precableado.
RS485-USB
Convertidor RS232:USB con cable y conector
Permite que los dispositivos RS485 se conecten a una
computadora mediante puerto USB. Brinda bloques
de terminal convenientes para generar señales y
conexiones de alimentación eléctrica CC Precableado.
RM1000 ENCL
Carcasa de acero para proteger el monitor de
comunicaciones remotas del RM1000 de ambientes
climáticos adversos o vandalismo, y a su vez permite
realizar conexiones de comunicación normal en la
unidad RM1000.
Software Solutions: Solutions-M
Las características del software incluyen registro de
datos, monitoreo de datos en tiempo real, y monitoreo
de fallas y eventos.
Especificaciones
Características de entrada
Control de alimentación 12-24 V CC (provisto por RS485MS-2W)
Características funcionales
Comunicación Puerto n.º 1 para
unidades 777
Puerto n.º 2 para
PC, PLC, etc.
Velocidad de transmisión 1200-28800 1200-28800
Configuración Ninguna, Impar o
Paridad par
Ninguna, Impar o
Paridad par
Bits de parada 1 o 2 Bits de parada 1 o 2
Protocolo Modbus RTU Modbus RTU
Interfaz serial RS-485 RS-485
Direcciones disponibles 1-99 disposiciones
(máximo 16 por RM1000)
Responde a todos los puertos n.º 1
Duración mecánica 100 000 ciclos
Material de revestimiento Poliéster
Exposición a rayos UV (UV) con
o sin degradación 2000 horas
Torque del terminal (bloque de
terminal no conectable) 0,3 Nm (3 in-lb)
Espesor del panel 0,76 mm (0,03" mínimo), 3 mm (0,12" máximo)
Características generales
Rango de temperatura ambiente
Funcionamiento -40 °C a 70 °C (-40 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Potencia de entrada máxima 100 mA
Tipo de protección
RM1000, RM1000 NEMA 4 NEMA 3R o UL Tipo 12,
NEMA 4X (opcional)
RM1000-3R NEMA 3R solamente
Humedad relativa Hasta un 85 % sin condensación
Certificaciones de seguridad
UL UL508 (Archivo #E68520)
CSA 22.2 Nro. 14 (Archivo #46510)
CE IEC 60947-6-2
Material de la carcasa Policarbonato negro
Pantalla Cristal líquido con rango de temperatura extendido
Tamaño 2 columnas x 16 caracteres
Teclado Seis botones táctiles integrados sobre plataforma
en acero inoxidable de 12,7 mm (0,5")
Dimensiones H 91,92 mm (3,62"); A 115,42 mm (4,54");
P 22,86 mm (0,9")
Peso 680,39 g (24 oz; 1,5 lb)
Método de montaje Montaje en superficie sobre placa posterior
utilizando 4 tornillos
www.littelfuse.com/rm1000
248 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Monitoreo e indicación remotos
MONITOREO E INDICACIÓN REMOTOS
10
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/rm2000
SERIE RM2000
Descripción
La serie RM2000 es un dispositivo de monitoreo de motores que se
utiliza en conjunto con la familia de productos 777 (excluyendo la Serie
P1), la familia de productos 77C y los monitores de voltaje Modelos
601, a través de protocolo Modbus con un módulo de comunicaciones.
El sistema de administración de motor RM2000/777 combina la
insuperable protección de motores electrónicos y el monitoreo de
motores fácil de utilizar.
El RM2000 tiene controles de teclado por membranas que permite
tanto monitorear como controlar unidades 777 MotorSaver® a través
de una red RS-485 utilizando el protocolo Modbus RTU. Un puerto
de comunicación auxiliar permite monitorear y controlar hasta
99 dispositivos RM2000 desde un PLC, DCS, o sistema SCADA o una
computadora con el software Solutions instalado. El RM2000 actuará
como un repetidor para su protector de motor al ser accedido desde
un ordenador central o PLC. Además de las funciones de monitoreo, el
RM2000 puede utilizarse para restablecer una unidad MotorSaver® o
PumpSaver® activada.
La serie RM2000 permite una instalación remota directa y mejora la
seguridad para el personal de operaciones y servicio permitiéndoles
controlar y monitorear el dispositivo sin abrir el tablero eléctrico. El
RM2000 es un método simple y económico para lograr la conformidad
con los reglamentos sobre seguridad de arco eléctrico. La carcasa y el
ensamble del teclado son resistentes al agua y a la luz ultravioleta.
Monitor remoto
Diagrama de conexiones
Información para pedir
MODELO DESCRIPCIÓN
RM2000 Monitor de pantalla remoto para
relevadores de la familia 777
RM2000-CBM+
Metano de yacimiento de carbón
especial. Optimiza la producción de gas
de pozos de metano de yacimientos de
carbón mientras protege las bombas
sumergibles
RM2000-RTDW Incluye una entrada adicional para el
módulo de fallas de conexión a tierra
NOTA: Todas las conexiones
para protección de la red se
omiten para brindar claridad.
RS485 MODBUS MASTER
ESCRITORIO DE PC PORTÁTIL,
PLC, DCS, SCADA*
*NOTA: Se requerirá un
convertidor RS-485 o interfaz para
conectarse a un dispositivo sin un
puerto RS-485
MODELO 777
DISPOSICIÓN
N.º 1
RED RS485 1220 m
(4000 ft) MÁX.
MODELO 777
DISPOSICIÓN N.º 2
MODELO 777
DISPOSICIÓN N.º 3
MODELO RS485MS-2W
DISPOSICIÓN N.º 2
DISPOSICIÓN N.º 1
DISPOSICIÓN N.º 3
MODELO RS485MS-2W
115 V CA
Soporta hasta 99 unidades RM-2000 o 777, 601 MODELO RS485MS-2W
Para conocer el plano de dimensiones, consulte: Apéndice, página 508, Figura 5.
©2018 Controladores y Relevadores de Protección de Littelfuse 249
Relevadores de protección
Monitoreo e indicación remotos
MONITOREO E INDICACIÓN REMOTOS
10
Conocimientos aplicados | Respuestas entregadas
SERIE RM2000
Características
Indicaciones:
J Corriente promedio, corrientes de línea individuales y desbalance
de corriente
J Corriente a tierra
J Voltaje promedio, voltajes de línea a línea y desbalance de voltaje
J Alimentación instantánea
J Factor de alimentación
J Últimas cuatro fallas
J Todos los parámetros programados en 777 MotorSaver®
J Tiempos de retardo de restablecimiento restantes
Controles:
J Botones de inicio y detención
J Entrada de acceso con clave para prevenir cambios en el punto
de ajuste
J Cambio de los puntos de ajuste 777 desde el teclado
El RM2000 está equipado también con un reloj en tiempo real que
permite acceder a la siguiente información de administración del motor
(la mayoría de las lecturas pueden ser restablecidas):
J Tiempo de ejecución total del motor
J Hora y fecha de las últimas cuatro fallas, junto con el voltaje y la
corriente en el momento del disparo
J Hora y fecha de los últimos 10 encendidos del motor
J Número total de restablecimientos del motor
J Tiempo mínimo entre cualquiera de los dos encendidos con hora
y fecha
J Tiempo de ejecución desde el último encendido
J kW/h consumidos
J kVAR consumidos
Accesorios
Convertidor RS485-RS232 con cable y conector
Permite que los dispositivos RS485 se conecten a
una computadora mediante el puerto RS232 (serial).
Brinda bloques de terminal convenientes para generar
señales y conexiones de alimentación eléctrica CC
Precableado.
RS485-USB
Convertidor RS232:USB con cable y conector
Permite que los dispositivos RS485 se conecten a una
computadora mediante puerto USB. Brinda bloques
de terminal convenientes para generar señales y
conexiones de alimentación eléctrica CC Precableado.
Software Solutions: Solutions-M
Las características del software incluyen registro de
datos, monitoreo de datos en tiempo real, y monitoreo
de fallas y eventos.
Especificaciones
Características de entrada
Control de voltaje 115 V CA ± 10 %; 50/60 Hz
Protección contra transitorios
eléctricos (Interno) 2500 V para 10 ms
Características funcionales
Puerto de comunicación n.º 1 para 777 Puerto n.º 2 para PC,
PLC, etc.
Velocidad de transmisión 1200-28800 1200-28800
Configuración Paridad par Ninguna, Impar o Paridad par
1 bit de parada 1 o 2 bit de parada
Protocolo Modbus RTU Modbus RTU
Interfaz serial RS-485 RS-485
Disposiciones disponibles 01 A01-A99
Reloj en tiempo real
Duración de reserva de la batería 10 años a 25 °C sin alimentación externa
Memoria de fallas más recientes Almacena hasta 4 fallas con registro de hora y
fecha, incluye voltajes y corrientes en el momento
del disparo
Configuración Dos relevadores electromecánicos independientes
Forma C (SPDT)
Material del contacto Plata/Óxido de estaño
Características de salida
(versión RM2000-RTDW
solamente)
Clasificación nominal de
capacidad experimental 240 VA a 120 V CA
Clasificación de propósito general 5 A a 120 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -30 °C a 70 °C (-22 °F a 158 °F)
Potencia de entrada máxima 3 W
Clase de protección NEMA 3R o UL Tipo 12
Humedad relativa Hasta un 85 % sin condensación
Certificaciones de seguridad
UL UL508 (Archivo #E68520)
CSA C22.2 Nro. 14 (Archivo #46510)
CE IEC 60947-6-2
Carcasa
Material Policarbonato negro
Pantalla Cristal líquido con rango de temperatura extendido
Tamaño 2 columnas x 20 caracteres
Iluminación Retroiluminación LED
Teclado Ocho botones táctiles integrados sobre plataforma
en acero inoxidable de 12,7 mm (0,5")
Duración mecánica 100 000 ciclos
Material de revestimiento Poliéster
Exposición a bajo voltaje (UV)
con o sin degradación 2000 horas
Torque del terminal
(bloque de terminal
no conectables) 0,3 Nm (3 in-lb)
Dimensiones H 162,56 mm (6,4"); A 154,94 mm (6,1");
P 27,94 mm (1,1")
Peso 544,31 g (19,2 oz; 1,2 lb)
Método de montaje Montaje en superficie sobre placa posterior con
4 tornillos
www.littelfuse.com/rm2000
250 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Monitoreo e indicación remotos
MONITOREO E INDICACIÓN REMOTOS
10
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/informer
INFORMER
Descripción
El Informer es una herramienta de diagnóstico portátil diseñada para
utilizarse con modelos monofásicos equipados con transmisores
LED infrarrojos (111-Insider-P; 231-Insider-P; 232-Insider; 111P; 233P;
233P-1.5; 234-P y 235P).
El Informer utiliza un receptor infrarrojo para acceder a la información
enviada desde el relevador que puede ser útil para resolver problemas
en el sistema.
Cada modelo monofásico de Littelfuse enunciado anteriormente está
equipado con un LED infrarrojo que transmite información valiosa
desde el dispositivo. Para recuperar esta información, el receptor
del Informer debe estar dirigido hacia el transmisor LED de la unidad
y estar a 2,5 m (8 ft) de la unidad. La luz verde COMM STATUS
indica en qué momento el Informer recibe datos de la unidad. Si se
pierde la comunicación, el Informer mostrará los últimos valores que
ha recibido. El Informer se apagará automáticamente después de
2 minutos de inactividad.
Se incluye un adaptador infrarrojo (IR Kit-12) con funciones nuevas e
Informers actualizados. Este adaptador permite la comunicación con la
unidad sin abrir la puerta del panel (en ciertos modelos).
Características y beneficios
El Informer indica:
J Número del modelo
J Voltaje, corriente y alimentación en tiempo real
J Puntos de disparo por sobrecarga y pozo seco
J Calibración del voltaje
J Punto de ajuste del retardo de restablecimiento y tiempo de retardo
de restablecimiento restante
J Tamaño del CT (según corresponda)
J Número de encendidos de la bomba
J Tiempo de ejecución total
J Historial de fallas para las últimas 20 fallas.
J Voltaje, corriente, alimentación y tiempo de ejecución para cada falla
en el momento de la falla
J Voltaje más alto y más bajo, y corriente desde la última calibración
Accesorios
Informer IR Kit-12
El cable del adaptador infrarrojo de 30,5 cm (12") se
conecta en la parte frontal de la unidad para brindar
diagnóstico remoto sin abrir el panel. Incluido con el
Informer
Herramienta de diagnóstico remoto para utilizar
con relevadores para bombas monofásicas
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 9.
©2018 Controladores y Relevadores de Protección de Littelfuse 251
Relevadores de protección
Monitoreo e indicación remotos
MONITOREO E INDICACIÓN REMOTOS
10
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/informer
INFORMER
Especificaciones
Características funcionales
Alimentación eléctrica
Entrada 9 voltios CC
(requiere una batería alcalina de 9 voltios)
Apagado automático 2 minutos
Comunicación
Señal Infrarroja
Rango 0,30 m-2,5 m (1-8 ft.) (aproximadamente
0,076 m [0,25 ft] al utilizar el kit IR)
Actualización de datos 4 s
Características generales
Rango de temperatura 0 °C a 60 °C (32 °F a 140 °F)
Precisión
Voltaje ± 2 %
Corriente ± 2 %
Potencia eléctrica ± 4 %
Entrada máxima 0,25 W
Resolución
Voltaje 1 V CA
Pantalla Cristal líquido
Tamaño 2 columnas x 16 caracteres
Teclado 3 botones de 12,7 mm (0,5") de diámetro
Duración mecánica 100 000 ciclos, mínimo
Material de revestimiento Poliéster
Carcasa
Dimensiones H 139,70 mm (5,50"); A 91,44 mm (3,60");
P 28,70 mm (1,13")
Peso 170,10 g (6 oz; 0,375 lb) (con o sin batería);
317,51 g (11,2 oz; 0,70 lb) (paquete completo)
Material Negro ABS 94HB
252 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Monitoreo e indicación remotos
MONITOREO E INDICACIÓN REMOTOS
10
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/informerms
INFORMER-MS
Herramienta de diagnóstico remoto para utilizar
con el monitor de voltaje de doble rango y
trifásico Serie 455
Descripción
El Informer-MS es un herramienta de diagnóstico portátil diseñada para
utilizar con Littelfuse 455.*
El Informer-MS utiliza un receptor infrarrojo para leer información
importante transmitida desde el 455*, que puede ser útil para resolver
problemas en el sistema. Una luz de estado de comunicación color
verde indica que el Informer-MS recibe datos del 455. Si se pierde la
comunicación, el Informer-MS mostrará los últimos valores que ha
recibido.
*Los modelos 455 fabricados después de 01/03/06 están equipados con el transmisor LED infrarrojo.
Los modelos fabricados antes de esta fecha no son compatibles con el Informer-MS.
Para establecer comunicación con el Modelo 455 sin abrir la puerta del panel se requiere un adaptador
infrarrojo (IR Kit-36), que se vende por separado.
Características
El Informer-MS indica:
J Voltaje de carga externa y de línea, en tiempo real
J Desbalance de voltaje de carga externa y de línea, en tiempo real
J Horas de funcionamiento del motor
J Últimas 20 fallas
J Últimos 32 encendidos del motor
J Puntos de disparo por voltaje alto y bajo
J Punto de disparo por desbalance de voltaje
J Configuración de retardo de disparo y restablecimiento
J Voltaje de la falla más reciente
J LED de estado de la comunicación
J Apagado automático
J Falla más reciente bajo condiciones de disparo
Accesorios
Kit Informer IR 36
El cable del adaptador infrarrojo de 91 cm (36") se
conecta en la parte frontal del modelo 455 para brindar
diagnóstico remoto sin abrir el panel.
Especificaciones
Características funcionales
Alimentación eléctrica
Entrada 9 voltios CC
(requiere una batería alcalina de 9 voltios)
Consumo 0,25 W (máx.)
Apagado automático 2 minutos
Comunicación
Señal Infrarroja
Rango 0,30 m-2,5 m (1-8 ft.) (aproximadamente
0,076 m [0,25 ft] al utilizar el kit IR)
Actualización de datos 4 s
Características generales
Rango de temperatura 0 °C a 60 °C (32 °F a 140 °F)
Precisión
Voltaje ± 2 %
Entrada máxima 0,25 W
Resolución
Voltaje 1 V CA
Desbalance de voltaje 1 %
Tiempo Incrementos de 1 minuto
Retardo de disparo Incrementos de 2 s
Retardo de restablecimiento Incrementos de 2 s
Pantalla (cristal líquido)
Tamaño 2 columnas x 16 caracteres
Teclado
(tres botones de 12,7 mm (0,5") de diámetro)
Duración mecánica 100 000 ciclos, mínimo
Material de revestimiento Poliéster
Carcasa
Dimensiones H 139,70 mm (5,50"); A 91,44 mm (3,60");
P 28,70 mm (1,13")
Peso 170,10 g (6 oz; 0,375 lb) (con o sin batería);
317,51 g (11,2 oz; 0,70 lb) (paquete completo)
Material Negro ABS 94HB
Para conocer el plano de dimensiones, consulte: Apéndice, página 510, Figura 9.
©2018 Controladores y Relevadores de Protección de Littelfuse 253
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas
MÓDULOS DE COMUNICACIÓN
RS485MS-2W Módulo de comunicación ....................................254
CIO-MB/CIO-120-MB Módulo de comunicación ....................................255
CIO-DN-P/
CIO-120-DN-P Interfaz Devicenet™............................................257
CIO-777-PR Interfaz Profibus...................................................259
CIO-EN Interfaz Modbus-TCP y Modbus-RTU..................260
COM 4-20 Módulo de salida para utilizar con
Modelo 777-AccuPower......................................261
MÓDULOS DE COMUNICACIÓN
11
www.littelfuse.com/relayscontrols
254 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Módulos de comunicación
www.littelfuse.com/rs485ms2w
RS485MS-2W
Descripción
Se requiere el módulo RS485MS-2W para activar la función de
comunicaciones Modbus en los productos modelo 77X. Se requiere
este módulo al utilizar el RM1000, RM2000 u otros dispositivos
compatibles con Modbus en productos de la serie 77x.
Características
J Aislamiento óptico ante variaciones de voltaje de línea
J Energizado por serie de productos 77x
J Capacidad de conducción de bus compatible con RS-485
J Conexión de entrada con restablecimiento remoto
J Conexión de alimentación para el modelo RM1000
Accesorios
Convertidor RS485-RS232 con cable y conector
Permite que los dispositivos RS485 se conecten a
una computadora mediante el puerto RS232 (serial).
Brinda bloques de terminal convenientes para generar
señales y conexiones de alimentación eléctrica CC
Precableado.
RS485-USB
Convertidor RS232:USB con cable y conector
Permite que los dispositivos RS485 se conecten a una
computadora mediante puerto USB. Brinda bloques
de terminal convenientes para generar señales y
conexiones de alimentación eléctrica CC Precableado.
Módulo de comunicación
Diagrama de conexiones
Hasta una distancia máxima de 1219 m (4000 ft), utilice un
par de conectores trenzados con aislamiento 18-24 AWG
Conector
SUB-D de
9 pines
Modbus
Master
con
puerto
RS-485
Modelos 777,
77C, 601
Modelos 777,
77C, 601
Modelos 777,
77C, 601
Módulo RS485MS-2W
Módulo
RS485MS-2W
Módulo
RS485MS-2W
Figura 1: Typical RS-485 Network
120 ohmios 120 ohmios
100 ohmios
A B S
A B S
A
B
A
B
S
A
B
S
Typical RS-485 Network RED RS485 TÍPICA
Consulte el manual para conocer los diagramas de conexiones básicos y completos.
Especificaciones
Especificaciones funcionales
Restablecimiento remoto
(para uso opcional con la
serie 777) Pulsador normalmente abierto nominal de 24 V CC,
10 mA (mín.)
Características generales
Temperatura de operación
-20 °C a 50 °C (-4 °F a 122 °F)
Terminal (bloque de terminales
de desconexión rápida)
Torque 0,3 Nm (3 in-lb) (máx.)
Cable AWG 12-20 AWG
Tipo de protección IP20
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Normas aprobadas
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia,
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 4 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Sobretensión
Potencia de entrada IEC 61000-4-5, Nivel 1
Líneas de datos/entradas IEC 61000-4-5, Nivel 2
Marcas de seguridad
UL UL508 (Archivo #E68520)
CE IEC 60947
Carcasa Policarbonato
Dimensiones H 52,83 mm (2,08"); A 73,66 mm (2,9");
P 19,56 mm (0,77")
Peso 117,93 g (4,16 oz; 0,26 lb)
MÓDULOS DE COMUNICACIÓN
Método de montaje Conector D-Sub de 9 pines lateral de Serie 777
11
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 2.
©2018 Controladores y Relevadores de Protección de Littelfuse 255
Relevadores de protección
Módulos de comunicación Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ciomb-cio120mb
CIO-MB/CIO-120-MB
Descripción
Los módulos CIO-MB/CIO-120-MB son interfaces Modbus-RTU
interfaces capaces de proporcionar control y monitoreo discretos de
un relevador de sobrecarga a través de una red Modbus.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Tamaño compacto
88 mm H x 25,4 mm A x
127 mm P (3,46" x 1" x 5")
Se adapta fácilmente en aplicaciones tanto nuevas como
existentes
Flexibilidad para
operar como interface
independiente o en conjunto
con Relevador 777
Brinda flexibilidad para control y monitoreo
Opción de restablecimiento
remoto
La entrada de restablecimiento remoto permite al usuario
restablecer los relevadores Serie 777 sin abrir el panel
Montable en riel DIN y
superficie Brinda flexibilidad en la instalación
Conexión con bloques de
terminales desconectables
Permite al usuario conectar bloques de terminal antes de
instalar el módulo, reduciendo así el cableado en el campo
Especificaciones
Especificaciones funcionales
Restablecimiento remoto (para
uso opcional con la serie 777) Pulsador normalmente abierto nominal de 24 V CC,
10 mA (mín.)
Requerimientos de alimentación:
Voltaje 24 V CC +10 %
Corriente 95 mA (máx.) 70mA (típica)
Alimentación 2,28 W (máx.) 1,7 W (típica)
Controlador de Ethernet IEEE 802.3
Capacidad 10 Base-T
Características de entrada
Propósito general (4)
Rango de voltaje:
CIO-MB 12-24 V CC
CIO-120-MB 90-130 V CA
Corriente 2 mA (típica)
Características de salida
SPDT (1), SPST (1)
Capacidad experimental 480 VA y 240 V CA, B300
Propósito general 5 A a 240 V CA
Características generales
Temperatura de operación -20 °C a 70 °C (-4 °F a 158 °F)
Terminal (bloque de terminales
de desconexión rápida)
Torque 0,3 Nm (3 in-lb) (máx.)
Cable AWG 12-20 AWG
Clase de protección IP20, NEMA 1 (seguro para manipular)
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Enlace de comunicación para sistemas de
monitoreo/PLC/SCADA
Información para pedir
MODELO VOLTAJE DE LÍNEA
CIO-MB 12-24 V CC
CIO-120-MB 90-130 V CA
FIGURE 1: Typical Wiring Diagram (CIO-MB)
FIGURE 2: Typical Wiring Diagram (CIO-120-MB)
Diagrama de conexiones
CONEXIONES TÍPICAS PARA CIO-MB
CONEXIONES TÍPICAS PARA CIO-120-MB
REVESTIMIENTO
REVESTIMIENTO
BLOQUES DE TERMINALES
DE DESCONEXIÓN RÁPIDA
BLOQUES DE TERMINALES
DE DESCONEXIÓN RÁPIDA
RED
MODBUS
RED
MODBUS
RESTABLECIMIENTO
REMOTO
RESTABLECIMIENTO
REMOTO
ENTRADAS
DIGITALES
SALIDA
B
SALIDA
B
SALIDA
A
SALIDA
A
115 V CA
MÓDULOS DE COMUNICACIÓN
11
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 3.
256 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Módulos de comunicación
www.littelfuse.com/ciomb-cio120mb
CIO-MB/CIO-120-MB
Normas aprobadas
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia,
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 4 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Sobretensión
Potencia de entrada IEC 61000-4-5, Nivel 1
Líneas de datos/entradas IEC 61000-4-5, Nivel 2
Certificaciones de seguridad
UL UL508 (Archivo #E68520)
CSA C22.2 (Archivo #46510)
CE IEC 60947-6-2
Carcasa Policarbonato
Dimensiones H 86,36 mm (3,40"); A 25,40 mm (1,00");
P 138,68 mm (5,46")
(terminales de desconexión rápida)
Peso 113,4 g (4 oz; 0,25 lb)
Métodos de montaje Montaje en riel DIN o en superficie (dos tornillos
n.º 8)
MÓDULOS DE COMUNICACIÓN
11
©2018 Controladores y Relevadores de Protección de Littelfuse 257
Relevadores de protección
Módulos de comunicación Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ciodnp-cio120dnp
CIO-DN-P/CIO-120-DN-P
Descripción
Los CIO-DN-P / CIO-120-DN-P son interfaces DeviceNet ™ flexibles
y eficientes capaces de proporcionar control discreto y monitoreo de
arrancadores de motor, unidades y otros dispositivos a través de una red
Devicenet ™.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Tamaño compacto
86,6 mm H x 25,4 mm A x
138 mm P (3,4" x 1" x 5,46")
Se adapta fácilmente en aplicaciones tanto
nuevas como existentes
Flexibilidad para
operar como interface
independiente o en conjunto
con Relevador 777
Brinda flexibilidad para control y monitoreo
Opción de restablecimiento
remoto
La entrada de restablecimiento remoto permite al usuario
restablecer los relevadores Serie 777 sin abrir el panel
Montable en riel DIN
y superficie Brinda flexibilidad en la instalación
Conexiones por bloques de
terminal no conectables
Permite al usuario conectar bloques de terminal antes de
instalar el módulo, reduciendo así el cableado en el campo
Enlace de comunicación para sistemas
de monitoreo/PLC/SCADA
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE LÍNEA
CIO-DN-P 12-24 V CA
CIO-120-DN-P 90-130 V CA
CONEXIONES TÍPICAS PARA CIO-120-DN-P
FIGURE 2: Typical Wiring Diagram (CIO-120-DN-Px)
IND. CONT. EQ.
LISTED
784X
®
DEVICENET MODULE/NETWORK STATUS
OVERLOAD COMM. STATUS
R R C I1 I2 I3 I4 1 2 3 4 5
PILOT DUTY RATING
480VA @ 240 VAC, B300
5A @ 240VAC
GENERAL PURPOSE
SCREW TORQUE RATING 0.5 Nm (5 in-lbs.)
DEPLUGGABLE
TERMINAL BLOCKS
115VAC OUTPUT
A
OUTPUT
B
REMOTE
RESET
DEVICENET
NETWORK
V +
CAN H
SHEILD
CAN L
VREMOTE
RESET
OUTPUT A OUTPUT B
INPUTS 1-4 115VAC
AC COMMON
CONEXIONES TÍPICAS PARA CIO-DN-P
FIGURE 1: Typical Wiring Diagram (CIO-DN-Px, CIO-601CS-DN-P1)
DEPLUGGABLE
TERMINAL BLOCKS
DIGITAL INPUTS
OUTPUT A OUTPUT B
REMOTE RESET
DEVICENET
NETWORK
V+
CAN H
SHEILD
CAN L
VLISTED
784X
®
REMOTE
RESET
DEVICENET MODULE/NETWORK STATUS
OVERLOAD COMM. STATUS
R R C I1 I2 I3 I4 1 234 5
CIO-DN DeviceNet Communication and I/O
PILOT D UTY RATING
480VA @ 240VAC, B300
5A @ 240VAC
GENERAL PURPOSE
DIGITAL
INPUTS
OUTPUT A OUTPUT B
SCREW TORQUE RATING 0.5 Nm (5 in.-lbs.)
IND. CONT. EQ.
BLOQUES DE TERMINALES
DE DESCONEXIÓN RÁPIDA
BLOQUES DE TERMINALES
DE DESCONEXIÓN RÁPIDA
RED
DEVICENET
RED
DEVICENET
RESTABLECIMIENTO
REMOTO
RESTABLECIMIENTO
REMOTO
ENTRADAS
DIGITALES
115 V CA
SALIDA
B
SALIDA
B
SALIDA
A
SALIDA
A
REVESTIMIENTO
REVESTIMIENTO
MÓDULOS DE COMUNICACIÓN
11
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 3.
258 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Módulos de comunicación
CIO-DN-P/CIO-120-DN-P
Especificaciones
Características de entrada
Requerimientos de alimentación
Voltaje (nominal) 24 V CC
Corriente 137 mA (máx.)
Alimentación 3,28 W (máx.)
Entradas digitales
Rango de voltaje
CIO-DN-P 12-24 V CA
CIO-120-DN-P 90-130 V CA
Frecuencia 50/60 Hz
Corriente máxima 2 mA (típica)
Restablecimiento remoto 24 V CC, 10 mA (mín.), pulsador NO
Características de salida
Contactores Forma A y C
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 5 A a 240 V CA
Características generales
Rango de temperatura -20 °C a 70 °C (-4 °F a 158 °F)
Humedad relativa 10-95 %, sin condensación
Calibre del cable Sólido o trenzado 12-20 AWG
Torque del terminal 0,3 Nm (3 in-lb)
Prueba de alto potencial
(relevadores para otros circuitos) (2 x V nominal V + 1000 V por 1 minuto)
Estándares EMC
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia,
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 4 kV
Certificaciones de seguridad
UL, certificación ULC, CSA UL508 (Archivo #E68520), C22.2 (Archivo #46510)
Carcasa Policarbonato
Dimensiones H 86,36 mm (3,4"); A 25,4 mm (1");
P 138,68 mm (5,46")
(bloques de terminales de deconexión rápida)
Peso 113,4 g (4 oz) (conectores de desconexión rápida)
Métodos de montaje Montaje en riel DIN o en superficie (dos tornillos n.º 8)
www.littelfuse.com/ciodnp-cio120dnp
MÓDULOS DE COMUNICACIÓN
11
©2018 Controladores y Relevadores de Protección de Littelfuse 259
Relevadores de protección
Módulos de comunicación Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/cio777pr
CIO-777-PR
Descripción
El Módulo CIO-777-PR es una interface Profibus conveniente y rentable,
capaz de proporcionar control discreto y monitoreo de arrancadores de
motor, unidades y otros dispositivos a través de una red Profibus.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Tamaño compacto
86,6 mm H x 25,4 mm A x
138 mm P (3,4" x 1" x 5,46")
Se adapta fácilmente en aplicaciones tanto
nuevas como existentes
Flexibilidad para
operar como interface
independiente o en conjunto
con Relevador 777
Brinda flexibilidad para control y monitoreo
Opción de restablecimiento
remoto
La entrada de restablecimiento remoto permite al usuario
restablecer los relevadores Serie 777 sin abrir el panel
Montable en riel DIN
y superficie Brinda flexibilidad en la instalación
Conector D-Sub integrado Proporciona una conexión fácil y rápida a una red y
disminuye el cableado en el campo
Enlace de comunicación para sistemas
de monitoreo/PLC/SCADA
FIGURE 1: Typical Wiring Diagram
DEPLUGGABLE
TERMINAL BLOCK
PROFIBUS
SUB-D CONNECTOR
PROFIBUS NETWORK
VA
SHIELD
B
V+
IN D. COT. NE Q.
LI STE D
784X
¨
PROFIBUS NETWORK S TATUS
OVERLOAD COMM. S TATUS
CIO-E777-PR PROFIBUS Communication
SCREW TORQUERATING 0.5 Nm (5.0 in.-lbs.)
Diagrama de conexiones
Especificaciones
Características de entrada
Requerimientos de alimentación
Voltaje (nominal) 12-24 V CC
Corriente 150 mA (máx.)
Alimentación 3,6 W (máx.)
Entradas digitales
Rango de voltaje 12-24 V CA
Corriente máxima 2 mA (típica)
Restablecimiento remoto 24 V CC, 10 mA (mín.), pulsador NO
Características de salida
Contactores Forma A y C
Capacidad experimental 480 VA a 240 V CA, B300
Propósito general 5 A a 240 V CA
Características generales
Rango de temperatura ambiente
Funcionamiento -20 °C a 70 °C (-4 °F a 158 °F)
Almacenamiento -40 °C a 80 °C (-40 °F a 176 °F)
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Calibre del cable Sólido o trenzado 12-20 AWG
Torque de terminal 0,3 Nm (3 in-lb)
Prueba de alto potencial
(relevadores para otros circuitos) Conforme con UL508 (2 x V nominal V + 1000 V por
1 minuto)
Estándares EMC
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia,
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 4 kV
Certificaciones de seguridad
UL, certificado ULC UL508 (Archivo #E68520)
CSA C22.2 (Archivo #46510)
Carcasa Policarbonato
Dimensiones H 86,36 mm (3,4"); A 25,4 mm (1");
P 138,68 mm (5,46")
(conectores de desconexión rápida)
Peso 113,4 g (4 oz)
(conectores de desconexión rápida)
Métodos de montaje Montaje en riel DIN o en superficie (dos tornillos n.º 8)
BLOQUES DE TERMINALES
DE DESCONEXIÓN RÁPIDA
CONECTOR D-SUB
PROFIBUS
RED
PROFIBUS
REVESTIMIENTO
MÓDULOS DE COMUNICACIÓN
11
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 3.
260 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de protección
Conocimientos aplicados | Respuestas entregadas Módulos de comunicación
www.littelfuse.com/cioen
CIO-EN
Descripción
El Módulo CIO-EN (no POE) es una interface Modbus-TCP y ModbusRTU conveniente y rentable capaz de proporcionar un control discreto y la
supervisión de un relevador de sobrecarga a través de una red Modbus.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Tamaño compacto
86,6 mm H x 25,4 mm A x
138 mm P (3,4" x 1" x 5,46")
Se adapta fácilmente en aplicaciones tanto
nuevas como existentes
Flexibilidad para
operar como interface
independiente o en conjunto
con Relevador 777
Brinda flexibilidad para control y monitoreo
Opción de restablecimiento
remoto
La entrada de restablecimiento remoto permite al usuario
restablecer los relevadores Serie 777 sin abrir el panel
Montable en riel DIN
y superficie Brinda flexibilidad en la instalación
Puerto Ethernet integrado Reduce el cableado en el campo
Enlace de comunicación para sistemas
de monitoreo/PLC/SCADA
Diagrama de conexiones
Especificaciones
Características de entrada
Requerimientos de alimentación:
Voltaje 24 V CC +10 %
Corriente 95 mA (máx.) 70mA (típica)
Alimentación 2,28 W (máx.) 1,7 W (típica)
Entradas digitales
Propósito general (4)
Rango de voltaje 12-24 V CC
Corriente 2 mA (típica)
Especificaciones funcionales
Restablecimiento remoto (para
uso opcional con la serie 777) Pulsador normalmente abierto nominal de 24 V CC,
10 mA (mín.)
Controlador de Ethernet IEEE 802.3
Capacidad 10 Base-T
Características de salida
SPDT (1), SPST (1)
Capacidad experimental 480 VA y 240 V CA, B300
Propósito general 5 A a 240 V CA
Características generales
Temperatura de operación -20 °C a 70 °C (-4 °F a 158 °F)
Terminal (bloque de terminales
de desconexión rápida)
Torque 0,3 Nm (3 in-lb) (máx.)
Cable AWG 12-20 AWG
Clase de protección IP20, NEMA 1 (seguro para manipular)
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Normas aprobadas
Descarga electrostática (ESD) IEC 61000-4-2, Nivel 3, contacto de 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia,
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 4 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Sobretensión
Potencia de entrada IEC 61000-4-5, Nivel 1
Líneas de datos/entradas IEC 61000-4-5, Nivel 2
Certificaciones de seguridad
UL UL508 (Archivo #E68520)
CSA C22.2 (Archivo #46510)
CE IEC 60947-6-2
Carcasa Policarbonato
Dimensiones H 86,36 mm (3,4");
A 25,4 mm (1"); P 138,68 mm (5,46")
Peso 113,4 g (4 oz; 0,25 lb)
Métodos de montaje Montaje en riel DIN o en superficie (dos tornillos n.º 8)
REVESTIMIENTO
BLOQUES DE TERMINALES
DE DESCONEXIÓN RÁPIDA
RED
MODBUS
RESTABLECIMIENTO
REMOTO
ENTRADAS
DIGITALES
SALIDA
B
SALIDA
A
MÓDULOS DE COMUNICACIÓN
11
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 3.
©2018 Controladores y Relevadores de Protección de Littelfuse 261
Relevadores de protección
Módulos de comunicación Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/com420
COM 4-20
Descripción
El módulo de salida COM 4-20 está diseñado para utilizarse con el monitor
de energía de salida Modelo 777-AccuPower ÚNICAMENTE. El módulo
enviará señales de 4 a 20 mA en proporción a la energía de salida. Puede
utilizarse también para enviar la energía de entrada configurando los
niveles de eficiencia del monitor 777-AccuPower en uno.
Este módulo permite la comunicación a un PLC con una entrada
analógica y sin entrada Modbus.
Características
J Energizado por el 777-AccuPower
J Salida de 4 a 20 mA escalable proporcional a los Hp o kW
J La señal puede utilizarse en pantallas, controladores o PLC.
Enlace de comunicación para sistemas
de monitoreo/PLC/SCADA
Figure 6. 4-20mA Output Module Wiring Diagram
Diagrama de conexiones
MÓDULO DE SALIDA DE 4 A 20 mA
Especificaciones
Características de salida
Corriente 4-20 mA
Características generales
Rango de temperatura -20 °C a 50 °C (-4 °F a 122 °F)
Terminal (bloque de terminales
de desconexión rápida)
Torque 0,3 Nm (3 in-lb) (máx.)
Cable AWG 12-20 AWG
Tipo de protección IP20
Humedad relativa 10-95 %, sin condensación por IEC 68-2-3
Normas aprobadas
Descarga electrostática IEC 61000-4-2, Nivel 3, contacto 6 kV, aéreo 8 kV
Inmunidad a radiofrecuencia,
Radiada 150 MHz, 10 V/m
Rápidos transitorios eléctricos IEC 61000-4-4, Nivel 3, potencia de entrada 4 kV
Prueba de alto potencial Conforme con UL508 (2 x V nominal +1000 V por
1 minuto)
Sobretensión
Potencia de entrada IEC 61000-4-5, Nivel 1
Líneas de datos/entradas IEC 61000-4-5, Nivel 2
Certificaciones de seguridad
UL UL508 (Archivo #E68520)
CE IEC 60947
Carcasa Policarbonato
Dimensiones H 52,83 mm (2,08"); A 73,66 mm (2,9");
P 19,56 mm (0,77")
Peso 113,4 g (4 oz; 0,25 lb)
Método de montaje Tornillos n.º 8; montaje lateral en
unidad 777-AccuPower
MODELO 777-ACCUPOWER
PARA CARGAS DE 4 A 20 mA
(PLC, PANTALLAS, ETC.)
100 Ω
CABLE BLINDADO
4-20 mA
MÓDULO DE SALIDA
MÓDULOS DE COMUNICACIÓN
11
Para conocer el plano de dimensiones, consulte: Apéndice, página 507, Figura 2.
262 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols
RELEVADORES DE RETARDO DE TIEMPO
La selección más amplia de relevadores de retardo de tiempo, conocida desde 1968 por sus diseños confiables que brindan larga duración y costos de mantenimiento reducidos.
Los relevadores de retardo de tiempo multifunción son versátiles porque dan la opción de elegir entre funciones y rangos de retardo de tiempo para garantizar que reciba el
temporizador perfecto para satisfacer sus necesidades. Los relevadores de retardo de tiempo para relevador de salida electromecánicos están disponibles con diversas funciones
y a su vez garantizan el aislamiento entre la entrada y la salida, además de la caídas de voltaje en el contacto de salida. Los relevadores de retardo de tiempo de estado sólido
no tienen piezas móviles propensas a arcos eléctricos y deterioro, que les brinda una vida útil de hasta 100 veces más comparados con un temporizador de relevador de salida.
Además, todos los relevadores de retardo de tiempo de estado sólido están completamente encapsulados para proteger contra impactos, vibración, humedad, etc.
Guía de funcionamiento del temporizador........................................................264
Multifunción
Serie TRDU........................................................................................................265
Serie TRU ..........................................................................................................268
Series ASQU/ASTU ..........................................................................................270
Series DSQU/DSTU ..........................................................................................272
Dedicado
En retardo
Serie T10...........................................................................................................274
Retardo de encendido
Serie ERDM.......................................................................................................275
Serie HRDM ......................................................................................................277
Serie KRDM.......................................................................................................279
Serie KRPS ........................................................................................................281
Serie KSD1........................................................................................................284
Serie KSDU........................................................................................................286
Serie KSPS ........................................................................................................288
Serie MSM........................................................................................................291
Serie ORM.........................................................................................................293
Serie PRLM........................................................................................................295
Series TDM/TDMH/TDML................................................................................297
Series TDU/TDUH/TDUL...................................................................................299
Serie TH1...........................................................................................................301
THD1B410.5S....................................................................................................303
Series TMV8000/TSU2000 ...............................................................................305
Serie TRM .........................................................................................................307
Serie TS1...........................................................................................................309
Serie TSD1 ........................................................................................................311
Retardo de encendido, normalmente cerrado
TS441165 ..........................................................................................................313
Retardo de apagado
Serie HRDB........................................................................................................315
Series HRPS/HRIS.............................................................................................317
Serie KRDB........................................................................................................319
Serie KSDB........................................................................................................321
Serie ORB..........................................................................................................323
Series TDB/TDBH/TDBL....................................................................................325
Serie TDUB........................................................................................................327
Serie THDB........................................................................................................329
Serie TRB...........................................................................................................331
Serie TSB...........................................................................................................333
Serie TSDB........................................................................................................335
Serie HRDS........................................................................................................337
HSPZA22SL.......................................................................................................339
Serie KRDS........................................................................................................341
Serie KSDS........................................................................................................343
Serie ORS..........................................................................................................345
Activación única
PRS65................................................................................................................347
Series TDS/TDSH/TDSL....................................................................................348
Serie TDUS........................................................................................................350
Series THC/THS ................................................................................................352
Serie THDS........................................................................................................354
Serie TRS...........................................................................................................356
Serie TSDS........................................................................................................358
Serie TSS...........................................................................................................360
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 263
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols
Para obtener más información…
y para descargar nuestra Guía de
aplicaciones del temporizador HVAC, visite
Littelfuse.com/timedelayrelays
Intervalo
Serie ERDI .........................................................................................................362
Serie HRDI.........................................................................................................364
Serie KRDI.........................................................................................................366
Serie KSD2........................................................................................................368
Serie KSPU........................................................................................................370
Series TDI/TDIH/TDIL........................................................................................372
Series TDUI/TDUIH/TDUIL................................................................................374
Serie THD2........................................................................................................376
Serie THD7........................................................................................................378
Series TS2/TS6 .................................................................................................380
Serie TSD2 ........................................................................................................382
Serie TSD6 ........................................................................................................384
Serie TSD7 ........................................................................................................386
Un disparo reiniciable
Serie KRD9........................................................................................................388
TSD94110SB .....................................................................................................390
Recircular
ERD3425A .........................................................................................................391
Serie ESDR........................................................................................................393
Serie HRDR........................................................................................................396
Serie KRD3........................................................................................................398
Serie KRDR........................................................................................................400
Serie KSD3........................................................................................................402
Serie KSDR........................................................................................................404
Serie KSPD........................................................................................................406
Serie RS.............................................................................................................408
Serie TDR ..........................................................................................................410
THD3C42A0.......................................................................................................412
TSD3411S..........................................................................................................414
Serie TSDR........................................................................................................416
Porcentaje
PTHF4900DK......................................................................................................418
Función dual
Serie TDMB.......................................................................................................420
ESD52233..........................................................................................................422
Serie KRPD........................................................................................................424
HVAC
Serie CT.............................................................................................................426
T2D120A15M....................................................................................................428
Serie TA.............................................................................................................430
Serie TAC1.........................................................................................................432
Serie TL.............................................................................................................434
TSA141300........................................................................................................436
Dispensadora de monedas
Serie HRV..........................................................................................................437
12 RELEVADORES DE RETARDO DE TIEMPO
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas
Guía de selección de funciones
Preguntas sobre selección
1) El temporizador se inicia cuando los contactos de activación
(encendido) están:
A) Cerrados B) Abiertos
2) ¿Cuál es el estado de la salida (o carga) durante el funcionamiento del
temporizador?
A) Encendido B) Apagado C) Encendido/Apagado
3) ¿La carga se desenergiza (o permanece desenergizada) si los
contactos de activación (encendido) están abiertos durante el
funcionamiento del temporizador?
A) Sí B) No
LAS CINCO FUNCIONES MÁS UTILIZADAS
Interpretación de los diagramas de tiempo
Los diagramas de tiempo se utilizan para mostrar el funcionamiento
relativo de interruptores, controles, y cargas a medida que transcurre
el tiempo. El tiempo se inicia en el primer límite vertical. Puede existir
una línea indicando el inicio del funcionamiento o podría comenzar
con la transición del dispositivo que inicia el funcionamiento. Cada
fila en el diagrama de tiempos representa un componente separado.
Estas filas serán etiquetadas con el nombre del dispositivo o sus
números de conexión del terminal. En un sistema digital o biestable, los
interruptores, controles, o cargas solo pueden estar ENCENDIDOS o
APAGADOS. Las líneas de tiempo se trazan para representar estas dos
posibles condiciones. Las líneas verticales se utilizan para definir puntos
de inicio o finalización importantes en el funcionamiento.
El ejemplo a la derecha corresponde al tipo más común de diagrama
de tiempos utilizando en Norteamérica. Muestra la energización de
cargas, y el cierre de interruptores y contactos mediante una transición
vertical ascendente de la línea de tiempo. La apertura de interruptores o
contactos y la desenergización de cargas se representa por transiciones
verticales descendientes.
DIAGRAMA DE TIEMPOS
Ejemplo:
Entrada Cuando está
desactivado
Interruptor de inicio Cerrado
Abierto
Salida
(Normalmente abierta)
Energizado
Desenergizado
RETARDO DE APAGADO (LIBERACIÓN)
V = Voltaje R = Restablecimiento S1 = Interruptor de inicio
TD = Retardo de tiempo t = Retardo de tiempo incompleto
L = Carga = Tiempo no definido
Símbolos de funciones de temporizador internacionales
= Retardo de encendido; retardo ACTIVADO
= Retardo de apagado; retardo DESACTIVADO
= Retardo de encendido y retardo de apagado; retardo ACTIVADO
y DESACTIVADO
= Intervalo; Impulso ACTIVADO
= Intervalo de límite de cierre; Impulso DESACTIVADO
= Activación única; generador de impulsos
= Luces intermitentes - Tiempo de ACTIVIDAD inicial; Ciclos de
tiempo similares - Tiempo de ACTIVIDAD inicial
= Luces intermitentes - Tiempo de INACTIVIDAD inicial;
Ciclos de tiempo similares - Tiempo de INACTIVIDAD inicial
= Recirculación - Ciclos desiguales; generador de impulsos
= Recirculación - En ciclos desiguales iniciar con ACTIVO o INACTIVO
= Retardo de encendido e intervalo; generador de impulsos único
Selección de las funciones del temporizador
Seleccionar una de las cinco funciones de temporización más comunes puede ser tan fácil como responder a tres preguntas del gráfico a
continuación. Si tiene dificultades para responder a estas preguntas, trate de dibujar un diagrama de conexiones que muestre cómo se conectan
el temporizador y la carga. Diagramas de tiempo y descripciones escritas de las cinco funciones más comunes, entre otras. Las funciones de
contactos instantáneos, acumulación, pausa de temporización y luces LED se incluyen en ciertas unidades para expandir la versatilidad del
temporizador. Estas operaciones expandidas se explican en la página de catálogo del producto. Los diagramas de tiempo se utilizan en estas páginas
junto con el texto y los símbolos internacionales en relación a las funciones.
GUÍA DE FUNCIONAMIENTO DEL TEMPORIZADOR
¿En qué momento
se activa el
temporizador?
Cuando los
contactos de
activación
están abiertos
Cuando los
contactos de
activación
están cerrados
Salida durante el
funcionamiento
del temporizador
Contactor de
activación
abierto - Carga
desactivada
APAGAR ENCENDIDO/
APAGADO
NO
ENCENDIDO ENCENDIDO
SÍ SÍ SÍ NO
Retardo de
encendido Recirculación Intervalo Un disparo Retardo de
apagado
www.littelfuse.com/relayscontrols 264 ©2018 Controladores y Relevadores de Protección de Littelfuse
12 RELEVADORES DE RETARDO DE TIEMPO
Relevadores de retardo de tiempo
Multifunción
©2018 Controladores y Relevadores de Protección de Littelfuse 265
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/trdu
SERIE TRDU
Descripción
La serie TRDU es un relevador de retardo de tiempo universal versátil
con 21 funciones duales e individuales seleccionables. Las funciones
duales reemplazan hasta tres temporizadores necesarios para cumplir la
misma función. Tanto las funciones como el rango del temporizador son
seleccionables mediante interruptores ubicados al frente de la unidad.
Dos LED indican el voltaje de entrada y el estado del relevador de salida.
Este dispositivo ofrece contactos de salida para relevadores aislados
de 10 A en SPDT o DPDT. El TRDU reemplaza cientos de números de
partes; por lo tanto, se reducen los requisitos de inventario.
21 funciones
Dispone de cinco interruptores para ajustar modos de funcionamiento
de 1 a 10 individuales, u 11 duales.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
21 funciones de
temporizador
Reemplaza cientos de partes y se reducen los requisitos
de inventario
Basado en microcontrolador Exactitud de repetición +/- 0,1 %
Retardo de tiempo
Seleccionable por el usuario
Las configuraciones del temporizador son seleccionables
por interruptor de 0,1 s a 1705 h en 8 rangos para mayor
flexibilidad
Contactos de salida SPDT o
DPDT aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Indicadores LED Proporciona indicaciones visuales del voltaje de entrada y
el estado del relevador
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje en superficie con dos tornillos o
anillos de presión n.º 6 en un riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 11 pines y 35 mm.
Montaje en superficie con dos tornillos o anillos
de presión n.º 6 en un riel DIN de 35 mm. Utilice
abrazaderas de presión PSC11.
Abrazaderas de presión PSC11 o PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilice la Serie PSC8 con conectores octales
NDS-8 o la Serie PSC11 con conectores NDS-11. Se
vende en juegos de dos unidades.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
V = Voltaje
S1 = Conmutador de inicio
DPDT DE 8 PINES SPDT DE 8 PINES
DPDT DE 11 PINES
Diagrama de conexiones
8 PINES
11 PINES
Información para pedir
MODELO VOLTAJE DE ENTRADA CONEXIÓN BASE
TRDU120A1 120 V CA DPDT de 8 pines*
TRDU120A2 120 V CA SPDT de 8 pines
TRDU120A3 120 V CA DPDT de 11 pines
TRDU12D1 12 V CC DPDT de 8 pines*
TRDU12D2 12 V CC SPDT de 8 pines
TRDU230A2 230 V CA SPDT de 8 pines
TRDU24A1 24 V CA/CC DPDT de 8 pines*
TRDU24A2 24 V CA/CC SPDT de 8 pines
TRDU24A3 24 V CA/CC DPDT de 11 pines
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
*Limitado para 9 funciones de funcionamiento en unidades DPDT de 8 pines.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 20.
Relevadores de retardo de tiempo
Multifunción
266 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
SERIE TRDU
VÉASE GRÁFICO DE MODO EXTENDIDO
MODO DUAL
RETRASO 2 RETRASO 1
MODO INDIVIDUAL
RETRASO DE TIEMPO MULTIFUNCIÓN
RELEVADOR
DE SALIDA
MODOS
Especificaciones
Retardo de tiempo
Tipo Microcontrolador
Rango Seleccionable
por interruptor** Funciones individuales: 0,1 s-1705 h en
8 rangos
Funciones duales: 0,1 s-3100 min cada uno en
8 rangos
Ajustes Multiplicador: selector de interruptores DIP de
3 posiciones 0,1, 1, 10 o 100 en segundos o
minutos
Exactitud del ajuste ± 1 % o 50 ms, lo que sea mayor
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Funciones de temporizador Incluye cinco interruptores para ajustar
funciones individuales de uno (1) de veintiuno
(21) o funcionesduales
Tiempo de restablecimiento ≤ 50 ms
Tiempo de iniciación 120 V CA: 75 ms
Retardo de tiempo vs.
temperatura y voltaje ± 1 %
Indicación
Dos LED que indican 1) Voltaje de entrada aplicado
2) Estado del relevador de salida
Entrada
Voltaje 12 V CC, 24 V CA/CC, 120 V CA o 230 V CA
Tolerancia
12 V CC y 24 V CA/CC -15 % a -20 %
120 y 230 V CA -20 % a -10 %
Frecuencia de línea 50/60 Hz
Consumo de energía 24-230 V ≤ 3 W; 12 V CC ≤ 2 W
Salida
Tipo Relevador electromecánico
Forma SPDT o DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Conexión por puerto
Dimensiones H 76,7 mm (3,1"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 pines o magnal de 11 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-40 °C a 85 °C
Peso ≅ 164 g (5,8 oz)
* Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada de la unidad en el momento de
cambiar la posición del interruptor.
Diagramas de funciones
DELAY-ON-BREAK
RECYCLE (ON TIME
FIRST, EQUAL DELAYS)
DELAY-ON-MAKE/DELAY-ON-BREAK
DELAY-ON-MAKE/INTERVAL
DELAY-ON-MAKE / RECYCLE
(ON TIME FIRST)
Funciones individuales Funciones duales DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SINGLE SHOT DELAY-ON-MAKE / SINGLE SHOT
RETARDO DE ENCENDIDO
RETARDO DE APAGADO
RECIRCULAR (TIEMPO DE ACTIVIDAD
INICIAL, RETARDOS IGUALES)
ENCENDIDO
ENCENDIDO
ENCENDIDO
ENCENDIDO
ENCENDIDO
ENCENDIDO
ENCENDIDO
ENCENDIDO
*
*
RETARDO DE
ENCENDIDO/INTERVALO
RETARDO DE ENCENDIDO/
ACTIVACIÓN ÚNICA ACTIVACIÓN ÚNICA
*
RETARDO DE ENCENDIDO/
RETARDO DE APAGADO
RETARDO DE
ENCENDIDO/RECIRCULAR
(TIEMPO DE ACTIVIDAD INICIAL)
12 * RELEVADORES DE RETARDO DE TIEMPO
www.littelfuse.com/trdu
Relevadores de retardo de tiempo
Multifunción
©2018 Controladores y Relevadores de Protección de Littelfuse 267
Conocimientos aplicados | Respuestas entregadas
SERIE TRDU
TRAILING EDGE SINGLE SHOT
(IMPULSE-OFF)
INVERTED DELAY-ON-BREAK
INVERTED SINGLE SHOT
DELAY-ON-BREAK / RECYCLE
(ON TIME FIRST)
SINGLE SHOT / RECYCLE
(ON TIME FIRST)
US
Funciones individuales Funciones duales
* 9 funciones incluidas en los modelos DPDT de 8 pines
5 interruptores para
selección de funciones
3 interruptores para rango
de retardo de tiempo
V = Voltaje
R = Restablecer
S1 = Interruptor de inicio
NO = Contacto normalmente abierto
NC = Contacto normalmente cerrado
TD, TD1, TD2 = Retardo de tiempo completo
t = Retardo de tiempo parcial
DOM = Retardo de encendido
DOB = Retardo de apagado
REC = Recircular
SS = Activación única
INT = Intervalo
M = Minutos
S = Segundos
= Tiempo no definido
NOTA: el rango de retardo de tiempo es igual para ambas funciones al seleccionar funciones duales.
ACCUMULATIVE
DELAY-ON-MAKE
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSD)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
t = Incomplete
Time Delay
TD = Time Delay
R = Reset
ACCUMULATIVE
DELAY-ON-MAKE / INTERVAL
CLAVE REFERENCIA
Ambos tiempos ajustables
Ambos tiempos ajustables
INTERVAL INTERVAL / RECYCLE
(ON TIME FIRST)
*
RECYCLE (ON TIME FIRST)
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally Open CoNC = Normally
Closed CTD1, TD2 = TimR = Reset
INTERVAL / DELAY-ON-MAKE
ENCENDIDO ENCENDIDO
ENCENDIDO
ENCENDIDO ENCENDIDO
ENCENDIDO ENCENDIDO
ENCENDIDO ENCENDIDO
ENCENDIDO ENCENDIDO
ENCENDIDO
ENCENDIDO
ENCENDIDO
RETARDO DE APAGADO INVERTIDO
ACTIVACIÓN ÚNICA INVERTIDA
INTERVALO* INTERVALO/RECIRCULAR* (TIEMPO DE ACTIVIDAD INICIAL)
RETARDO DE APAGADO/RECIRCULAR
(TIEMPO DE ACTIVIDAD INICIAL)
ACTIVACIÓN ÚNICA/RECIRCULAR
(TIEMPO DE ACTIVIDAD INICIAL)
RECIRCULAR (TIEMPO DE
INACTIVIDAD INICIAL)
RECIRCULAR (TIEMPO DE
ACTIVIDAD INICIAL)
UN DISPARO REINICIABLE
(DETECTOR DE MOVIMIENTO) (PSD)
ACUMULATIVO
RETARDO DE ENCENDIDO INTERVALO/RETARDO
DE ENCENDIDO *
ACUMULATIVO RETARDO
DE ENCENDIDO/INTERVALO
ACTIVACIÓN ÚNICA POR LÍMITE DE CIERRE
(IMPULSOS DESACTIVADOS)
*
*
12 RELEVADORES DE RETARDO DE TIEMPO
www.littelfuse.com/trdu
Relevadores de retardo de tiempo
Multifunción
268 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Descripción
La serie TRU es un relevador de retardo de tiempo universal,
ajustable por perilla y multifuncional. Incluye seis de las funciones
de temporización más comunes seleccionadas por un interruptor
corredizo. El retardo de tiempo es ajustable por perilla y el rango de
retardo de tiempo es seleccionable por interruptor. La precisión de
repetición es de + 0,1 %. Tanto las funciones como el rango de tiempo
pueden seleccionarse desde la parte superior de la unidad. Además
de las múltiples funciones y rangos de tiempo extensos, la Serie TRU
admite voltaje de entrada universal; 19 a 264 V CA y 19 a 30 V CC
y relevadores de salida de 10 A. La serie TRU puede reemplazar
directamente hasta 1000 modelos de relevadores de retardo de tiempo
de la competencia.
Funcionamiento
Un interruptor corredizo de seis posiciones elige el retardo de
encendido, el intervalo, la activación única, la recirculación tiempo de
ACTIVIDAD inicial relevadores de recirculación iguales), el retardo de
apagado y un disparo reiniciable. Las conexiones del DPDT de 8 pines
están limitadas al retardo de encendido, el intervalo y las funciones
de recirculación. Todas las seis funciones están disponibles en las
versiones SPDT de 8 pines y DPDT de 11 pines.
VÉASE GRÁFICO DE MODO EXTENDIDO
RELEVADOR UNIVERSAL DE RETRASO DE TIEMPO
RECIRCULAR
RETRASO DE
SUSPENSIÓN
CONTROL DE
ACTIVACIÓN SALIDA
AJUSTE DEL TEMPORIZADOR
ELEGIR
RANGO
SEG. MIN.
ACTIVACIÓN
INTERVALO
RETRASO EN
OPERACIÓN
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,1 % o +/ - 20 ms, lo que sea
mayor
6 rangos de tiempo
(0,1 s-1000 min) Rango extenso que cumplirá con la mayoría de requisitos
Retardo de tiempo
ajustable por perilla
Permite al usuario ajustar el retardo de tiempo según las
necesidades de la aplicación
Voltaje de entrada universal Versatilidad para utilizarse en la mayoría de aplicaciones
Multifunción Proporciona las funciones de temporización estándar más
comunes
Indicadores LED Proporcionan indicaciones visuales del voltaje de entrada y
el estado del relevador
Contactos de salida
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
SERIE TRU
Relevador de retardo de tiempo universal ajustable por perilla
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE ENTRADA CONEXIONES
PRINCIPALES FUNCIONES
TRU1 19-264 V CA; 19-30 V CC DPDT de 8 pines 3
TRU2 19-264 V CA; 19-30 V CC SPDT de 8 pines 6
TRU3 19-264 V CA; 19-30 V CC DPDT de 11 pines 6
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
L1 N/L2
L1 N/L2
SPDT DE 8 PINES
Retardo de encendido
Intervalo
Activación única
Recirculación
(Tiempo de ACTIVIDAD inicial,
retardos de recirculación
iguales)
Retardo de apagado
Un disparo reiniciable
DPDT DE 11 PINES
Retardo de encendido
Intervalo
Activación única
Recirculación
(Tiempo de ACTIVIDAD inicial,
retardos de recirculación
iguales)
Retardo de apagado
Un disparo reiniciable
DPDT DE 8 PINES
Retardo de encendido
Intervalo
Recirculación
V = Voltaje
S1 = Conmutador de
inicio
Los contactos del
relevador
están aislados
8 PINES
11 PINES
12 RELEVADORES DE RETARDO DE TIEMPO
www.littelfuse.com/tru
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 21.
Relevadores de retardo de tiempo
Multifunción
©2018 Controladores y Relevadores de Protección de Littelfuse 269
Conocimientos aplicados | Respuestas entregadas
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 300 V CA
Montaje de superficie con dos tornillos o anillos de
presión n.º 6 (M 3.5 x 0.6) en riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 11 pines y 35 mm.
Clasificación nominal 10 A a 300 V CA Montaje de
superficie con dos tornillos o anillos de presión n.º 6
(M 3.5 x 0.6) en riel DIN de 35 mm. Utilice abrazaderas
de presión PSC11.
Abrazaderas de presión PSC11 o PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilice la Serie PSC8 con conectores octales
NDS-8 o la Serie PSC11 con conectores NDS-11. Se
venden por pares.
Diagrama de funciones
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSD)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
t = Incomplete
Time Delay
TD = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango
Seleccionable por interruptor* 0,1 s-1000 min en 6 rangos:
1) 0,1-10 s
2) 1-100 s
3) 10-1000 s
4) 0,1-10 min
5) 1-100 min
6) 10-1000 min
Ajustes
Multiplicador Interruptor DIP de 4 posiciones para
seleccionar x0,1, x1, x10 y segundos o minutos
Ajuste del tiempo Ajuste por perilla integrada con dial de
referencia de 1-100
Dos LED que indican: 1) Voltaje de entrada aplicado
2) Estado del relevador de salida
Exactitud de repetición ± 0,1 % o ± 20 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 300 ms
Retardo de tiempo vs.
temperatura y voltaje ± 2 %
Entrada
Voltaje - Universal
Rango de entrada 19-264 V CA y 19-30 V CC
Frecuencia de línea 50/60 Hz
Salida
Tipo Relevador electromecánico
Forma SPDT o DPDT, aislada
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Rápidos transitorios eléctricos 38 joules
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Polaridad Las unidades CC están protegidas contra
polaridad inversa
Mecánica
Montaje Conexión por puerto
Dimensiones H 87,3 mm (3,44"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 pines o magnal de
11 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
* Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada en el momento de cambiar la
posición del interruptor.
SERIE TRU
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
t = Retardo de tiempo
incompleto
TD = Retardo de tiempo
R = Restablecer
UN DISPARO REINICIABLE
(DETECTOR DE MOVIMIENTO) (PSD)
12 RELEVADORES DE RETARDO DE TIEMPO
www.littelfuse.com/tru
Relevadores de retardo de tiempo
Multifunción
270 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
ASQU ASTU
Descripción
Las Series ASQU y ASTU de temporizadores de estado sólido
universales de 17,5 mm y ajustable por perilla ofrecen múltiples
funciones, voltajes y rangos de retardo de tiempo. Elija entre
5 funciones y 4 rangos de retardo de tiempo mediante 4 interruptores
ubicados en la parte frontal de la unidad. Los ajustes del rango de
tiempo se realizan mediante la perilla integrada.
La serie ASQU tiene terminales de conexión rápida y la Serie ASTU tiene
bloques de terminal.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Voltaje CA o
CC universal Elija entre modelos de 24-240 V CA o 9-110 V CC
Tamaño compacto de
17,5 mm Compatible con rieles de alta densidad
Basado en microcontrolador Exactitud de repetición +/ -1 %
Multifunción: 5 funciones de
temporizador Reduce requisitos sobre inventario
Retardo de tiempo
ajustable por perilla Retardo ajustable en el campo entre 0,1 s-100 m
Relevador de salida de
estado sólido de corriente de
inserción de 10 A y corriente
uniforme de 0,7 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Sujetadores de montaje
incluidos
Cada unidad es compatible con adaptadores de montaje
rápido en riel DIN o superficie
Sistema de circuitos de
vigilancia
Monitoreo y corrección automáticos para
mayor rendimiento
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Adaptador de montaje en superficie P0500-178
Adaptador de montaje en riel DIN P0500-179
Para utilizar con temporizadores Serie ASxx/DSxx.
Información para pedir
MODELO VOLTAJE DE ENTRADA CONEXIÓN
ASQUA3 24-240 V CA Conectores rápidos
ASQUD3 9 a 110 V CC Conectores rápidos
ASTUA3 24-240 V CA Bloques de terminal
ASTUD3 9 a 110 V CC Bloques de terminal
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
0.1-10s
1-100s
10-1000s
1-100m
X100s
X10s
X1s
X10m
R M S
D
C
D
C
D
C
D
C
F
E
F
E
F
E
F
E
R = Rango
M = Multiplicador
S = Ajustes
L1 N/L2
L1 N/L2
V = Voltaje
L = Carga
J= Cable requerido para
funcionamiento en intervalo
S1= Interruptor de inicio
UTL = Carga opcional no medida
RETARDO DE ENCENDIDO
Y RECIRCULACIÓN
ACTIVACIÓN ÚNICA, INTERVALO Y
RETARDO DE APAGADO
DOM
SS
R
DOB
A
A
A
A
B
B
B
B
AJUSTES
DOM = Retardo de encendido
SS = Activación única/Intervalo
R = Recirculación
DOB = Retardo de apagado
Diagramas de ajuste y conexiones
L1 N/L2
L1 N/L2
SERIES ASQU/ASTU
12 RELEVADORES DE RETARDO DE TIEMPO
www.littelfuse.com/asqu-astu
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 22.
Relevadores de retardo de tiempo
Multifunción
©2018 Controladores y Relevadores de Protección de Littelfuse 271
Conocimientos aplicados | Respuestas entregadas
Especificaciones
Retardo de tiempo
Tipo Basado en microcontrolador con resonador en
cerámica y sistema de circuitos de vigilancia
Ajuste Perilla con dial; 2 interruptores de selección
1 de 4 multiplicadores
Rango* 0,1-10 s, 1-100 s, 10-1000 s, 1-100 min
Exactitud de repetición ± 1 % o ± 50 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 2 % o ± 50 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 300 ms
Tiempo de iniciación Activación única y retardo de apagado: ≤ 32 m
Retardo de tiempo vs.
temperatura y voltaje ± 2 %, o ± 50 ms, lo que sea mayor
Entrada
Voltaje CA: 24-210 V CA-20 % - 10 %
CC 9-110 V CC; -0 % - 20 % a -25 °C
9,4-110 V CC; -0 % - 20 % a -40 °C
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Salida
Tipo Estado sólido
Forma NO
Clasificación nominal corriente uniforme de 0,7 A,
corriente de inserción de 10 A
Caída de voltaje CA ≅ 2,5 V-0,7 A; CC ≅1,5 V-0,7 A
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Dos adaptadores base disponibles
Riel DIN A presión para DIN 1 de 32 mm y
DIN 3 de 35 mm
Superficie Dos tornillos n.º 6 (M3.5 x 0.6) o sujetadores
de montaje rápido
Dimensiones H 76,2 mm (3"); A 17,52 mm (0,69");
P 61,2 mm (2,41")
Terminación
ASQU Terminales de conexión rápida hembra de
6,35 mm (0,25 in)
ASTU Bloques de terminal con pulsador de 5 mm
(0,197 in) para cable de 2,5 mm2
(n.º 14 AWG)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 113 g (4 oz)
*Para aplicaciones con certificación CE, la alimentación eléctrica debe aislarse de la unidad en el momento de
cambiar la posición del interruptor.
DIN Rail Mount
Inches (Millimeters)
SurfaceQuick MoFastner(2[Drill . 18diameter35mm DIN 3
32MM DIN 1
.815
(20.70)
.640
(16.26)
.38
(9.65
3.00
(76.2)
.23(5P0500-178
MONTAJE EN SUPERFICIE
Milímetros (in)
P0500-179
MONTAJE EN RIEL DIN
Milímetros (in)
Diagramas de montaje
DIN Rail Mount
Inches (Millimeters)
Surface Mount
Quick Mount
Fastner(2)
[Drill . 187 (4.75)
diameter hole]
35mm DIN 3
32MM DIN 1
.815
(20.70)
.640
(16.26)
.38
(9.65
.185
(4.70)
3.00
(76.2)
2.41
(61.2)
.235 DIA
(5.97)
.69
(17.52)
SERIES ASQU/ASTU
5,97 (0,235)
DIÁMETRO
9,65
(0,38)
4,70
(0,185)
76,2
(3,00)
16,26
(0,640)
17,52
(0,69)
Sujetador
de montaje
rápido (2)
[Diámetro del
orificio de
perforación
4,75 (0,187)]
20,70
(0,815)
32 MM DIN 1
32 MM DIN 3
61,2
(2,41)
12 RELEVADORES DE RETARDO DE TIEMPO
www.littelfuse.com/asqu-astu
Relevadores de retardo de tiempo
Multifunción
272 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
DSQU DSTU
1
2
4
8
16
32
ON
Añade interruptores en posición
de encendido
TD = 2+8+16=26
L1 N/L2
L1 N/L2
V = Voltaje
L = Carga
J= Cable requerido para
funcionamiento en intervalo
S1= Interruptor de inicio
UTL = Carga opcional no medida
DOM
SS
R
DOB
A
A
A
A
B
B
B
B
0.1s
1s
10s
1m
X10s
X1s
X0.1s
X1m
R M S I
D
C
D
C
D
C
D
C
F
E
F
E
F
E
F
E
0.1-6.3s
1-63s
10-630s
1-63m
R = Rango
M = Multiplicador
S = Ajustes
I = Incrementos de tiempo
DOM = Retardo de encendido
SS = Activación única/Intervalo
R = Recirculación
DOB = Retardo de apagado
Diagramas de ajuste y conexiones
L1 N/L2
L1 N/L2
RETARDO DE ENCENDIDO
Y RECIRCULACIÓN
ACTIVACIÓN ÚNICA, INTERVALO Y
RETARDO DE APAGADO
AJUSTES
Descripción
Las Series DSQU y DSTU de temporizadores de estado sólido
universales de 17,5 mm y ajustable por interruptor DIN ofrecen
múltiples funciones, voltajes y rangos de retardo de tiempo. Elija entre
5 funciones y 4 rangos de retardo de tiempo mediante 4 interruptores
ubicados en la parte frontal de la unidad. Seis interruptores ajustan el
retardo de tiempo a través del rango seleccionado.
La serie DSQU tiene terminales de conexión rápida y la Serie DSTU
tiene bloques de terminal.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Voltaje CA o
CC universal Elija entre modelos de 24-240 V CA o 9-110 V CC
Tamaño compacto
de 17,5 mm Compatible con rieles de alta densidad
Basado en microcontrolador Exactitud de repetición +/ -1 %
Multifunción: 5 funciones de
temporizador Reduce requisitos sobre inventario
Retardo de tiempo ajustable
por interruptor DIP Retardo ajustable en el campo entre 0,1 s y 63 m
Relevador de salida de
estado sólido de corriente de
inserción de 10 A y corriente
uniforme de 0,7 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Sujetadores de montaje
incluidos
Cada unidad es compatible con adaptadores de montaje
rápido en riel DIN o superficie
Sistema de circuitos
de vigilancia
Monitoreo y corrección automáticos para mayor
rendimiento
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Adaptador de montaje en superficie P0500-178
Adaptador de montaje en riel DIN P0500-179
Para utilizar con temporizadores Serie ASxx/DSxx.
Información para pedir
MODELO VOLTAJE DE ENTRADA CONEXIÓN
DSQUA3 24-240 V CA Conectores rápidos
DSQUD3 9-110 V CC Conectores rápidos
DSTUA3 24-240 V CA Bloques de terminal
DSTUD3 9-110 V CC Bloques de terminal
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
SERIES DSQU/DSTU
ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
www.littelfuse.com/dsqu-dstu
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 22.
Relevadores de retardo de tiempo
Multifunción
©2018 Controladores y Relevadores de Protección de Littelfuse 273
Conocimientos aplicados | Respuestas entregadas
Especificaciones
Retardo de tiempo
Tipo Basado en microcontrolador con resonador en
cerámica y sistema de circuitos de vigilancia
Ajuste 6 interruptores para ajustar el retardo de tiempo;
2 interruptores para seleccionar 1 de
4 multiplicadores
Rango* x 0,1 s = 0,1-6,3 s en incrementos de 0,1 s
x1 s = 1-63 s en incrementos de 1 s
x10 s = 10-630 s en incrementos de 10 s
x1 min = 1-63 min en incrementos de 1 min
Exactitud de repetición ± 0,1 % o ± 20 ms, lo que sea mayor
Exactitud del ajuste ± 2 % o ± 50 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 300 ms
Tiempo de iniciación Activación única y retardo de apagado: ≤ 32 ms
Retardo de tiempo vs.
temperatura y voltaje ± 2 % o ± 50 ms, lo que sea mayor
Entrada
Voltaje CA: 24-240 V CA-20 % - 10 %
CC 9-110 V CC; -0 % - 2 % a -25 °C
9,4-110 V CC; -0 % - 20 % a -40 °C
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Salida
Tipo Estado sólido
Forma NO
Clasificación nominal corriente uniforme de 0,7 A, corriente de
inserción de 10 A
Caída de voltaje CA ≅ 2,5 V-0,7 A; CC ≅1,5 V-0,7 A
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Dos adaptadores base disponibles
Riel DIN A presión para DIN 1 de 32 mm DIN 3 de
35 mm
Superficie Dos tornillos n.º 6 (M3.5 x 0.6) o sujetadores
de montaje rápido
Dimensiones H 76,2 mm (3"); A 17,52 mm (0,69");
P 61,2 mm (2,41")
Terminación
DSQU 6,35 mm (0,25 in) Terminales de conector
rápido macho
DSTU bloques de terminal con pulsador de 5 mm
(0,197 in) para cable 2,5 mm2
(n.º 14 AWG)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 119 g (4,2 oz)
* Para aplicaciones con certificación CE, la alimentación eléctrica debe aislarse de la unidad en el momento de
cambiar la posición del interruptor.
DIN Rail Mount
Inches (Millimeters)
SurfaceQuick MoFastner(2[Drill . 18diameter35mm DIN 3
32MM DIN 1
.815
(20.70)
.640
(16.26)
.38
(9.65
3.00
(76.2)
.23(5P0500-178
MONTAJE EN SUPERFICIE
Milímetros (in)
P0500-179
MONTAJE EN RIEL DIN
Milímetros (in)
Diagramas de montaje
DIN Rail Mount
Inches (Millimeters)
Surface Mount
Quick Mount
Fastner(2)
[Drill . 187 (4.75)
diameter hole]
35mm DIN 3
32MM DIN 1
.815
(20.70)
.640
(16.26)
.38
(9.65
.185
(4.70)
3.00
(76.2)
2.41
(61.2)
.235 DIA
(5.97)
.69
(17.52)
SERIES DSQU/DSTU
5,97
(0,235) DIÁMETRO
9,65
(0,38)
4,70
(0,185)
76,2
(3,00)
16,26
(0,640)
17,52
(0,69)
Sujetador
de montaje
rápido (2)
[Diámetro del
orificio de
perforación
4,75 (0,187)]
20,70
(0,815)
32 MM DIN 1
32 mm DIN 3
61,2
(2,41)
12 RELEVADORES DE RETARDO DE TIEMPO
www.littelfuse.com/dsqu-dstu
274 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo activo
www.littelfuse.com/t10
SERIE T10
Temporizador de retardo para relevador
de estado sólido
Descripción
La serie T10, temporizador de retardo, es un dispositivo electrónico
de estado sólido que brinda temporización confiable y exacta para
controlar circuitos de hasta 460 V CA. El T10 integra un retardo de
tiempo seleccionable por el usuario entre 6 s y 10 minutos (0,5 a 12 s
en el modelo T10S400) y contactos de salida SPDT. Cuando se activa
la energía al T10, inicia inmediatamente su ciclo de temporización.
Durante ese lapso, el indicador LED cambia entre rojo y verde y los
contactos de salida permanecen inactivos. Una vez completado el ciclo
de temporización, el indicador LED permanece encendido en verde y se
activan los contactos de salida. Los contactos de salida permanecerán
activados hasta que se corte el paso de energía al T10.
Las clasificaciones nominales del contacto SPDT son 480 V a 240 V CA
en los modelos de 115 V y 230 V, y de 470 VA en 600 V CA en el modelo
de 460 V.
Características y beneficios
g LED de estado
g Relevador de control de 600 V en modelos 460 V
Especificaciones
Características de entrada
Frecuencia 50*/60 Hz
Características funcionales
Rango de temporización
T10100, T10200, T10400 6 s a 10 minutos
T10S400 0,5 s a 12 s
Exactitud de repetición
Condiciones fijas ± 1 %
Características de salida
Clasificación nominal de contacto de salida (SPDT)
Capacidad experimental
T10100, T10200 480 VA a 240 V CA
T10400, T10S400 470 VA a 600 V CA
Características generales
Potencia de entrada máxima 5 W
Terminal
Torque 7 libras por pulgada
Tamaño del cable 12-18 AWG
Marcas de seguridad
UL UL508 (Archivo #E68520)
Dimensiones H 74,4 mm (2,93"); A 133,9 mm (5,27");
P 74,9 mm (2,95")
Peso 0,4 kg (0,94 lb) (15,04 oz)
Método de montaje tornillos n.º 8
*Nota: 50 Hz aumentarán todos los temporizadores de retardo en 20 %
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE LÍNEA DESCRIPCIÓN
T10120 115 V CA Rango de 0,1-10 min, contactos de salida
nominales de 240 V CA
T10200 230 V CA Rango de 0,1-10 min, contactos de salida
nominales de 240 V CA
T10400 460 V CA Rango de 0,1-10 min, contactos de salida
nominales de 600 V CA
T10S400 460 V CA Rango de 0,5-12 s, contactos de salida
nominales de 600 V CA
CONTACTOR
PRINCIPAL
CARGA
12 RELEVADORES DE RETARDO DE TIEMPOPara conocer el plano de dimensiones, consulte: Apéndice page 509, Figura 6.
©2018 Controladores y Relevadores de Protección de Littelfuse 275
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/erdm
SERIE ERDM
L1 N/L2
V = Voltaje
Se incluye una perilla, o terminales
9 y 10, solo en las unidades
ajustables. Los contactos del
relevador están aislados.
RT se incluye cuando se pide un
ajuste externo.
Descripción
La serie ERDM es una combinación de dispositivos electrónicos
digitales y un relevador electromecánico fiable. Estos dispositivos
ofrecen una salida de relevador DPDT para circuitos de lógica de
relevador, y aislamiento de voltaje de entrada y salida. Un método
económico para aplicaciones de fabricantes originales, tales como
encendido aleatorio, secuenciación ON, interruptor antioscilación, ciclo
anticortos, y otras aplicaciones de retardo de encendido comunes.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísla el voltaje de entrada.
Restablecimiento: Cal aislar el voltaje de entrada se restablece la salida
y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuito digital
integrado con relevador
electromecánico
Exactitud de repetición +/ - 0,5 %
Contactos de salida DPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-16, P1004-16-XVersa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
P1015-64 (AWG 14/16) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
ERDM123 12 V CC Perilla integrada 0,1-10 s ERDM422 120 V CA Perilla integrada 0,1-5 s
ERDM126 12 V CC Perilla integrada 0,6-60 s ERDM423 120 V CA Perilla integrada 0,1-10 s
ERDM128 12 V CC Perilla integrada 0,1-10 min ERDM425 120 V CA Perilla integrada 0,3-30 s
ERDM222 24 V CA Perilla integrada 0,1-5 s ERDM427 120 V CA Perilla integrada 0,1-5 min
ERDM4130S 120 V CA Fijo 30 s ERDM429 120 V CA Perilla integrada 0,2-15 min
ERDM4210 120 V CA Perilla integrada 1-100 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 25.
276 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/erdm
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango 0,1 s-500 min en 11 rangos ajustables o
0,1 s-1000 min fijo
Ajuste Fijo, integrado o de ajuste externo
Exactitud de repetición ± 0,5 %
Tolerancia
(Calibración de fábrica) ≤ ± 10 %
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12, 24 o 120 V CC; 24, 120, o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
120 V CC/CA y 230 V CA -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Contactos de relevador aislados
Forma DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Carga completa - 1 x 106
Protección
Voltaje de aislamiento ≥1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con dos tornillos n.º 6
(M3,5 x 0,6)
Dimensiones H 88,9 mm (3,5"); A63,5 mm (2,5");
P 43,2 mm (1,7")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 65 °C/-40 °C a 85 °C
Peso ≅ 162 g (5,7 oz)
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
Megaohmios
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
,
,
,
,
,
,
,
,
,
,
, , , , , ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Gráfico de selección de RT
Retardo de tiempo deseado*
Megaohmios
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
, ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Minutos
Guías de selección
SERIE ERDM
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 277
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hrdm
SERIE HRDM
L1 N/L2
Temporizador de retardo de encendido
Diagrama de conexiones
NO = Normalmente abierta
L = Carga
C = Sonda común o contacto de
transferencia
NOTA: Se incluye una perilla,
o terminales 4 y 5, solo en las
unidades ajustables. RT se incluye
cuando se pide un ajuste externo.
Los contactos del relevador no
están aislados.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
HRDM120 12 V CC Integrado 0,1-10 s
HRDM3112S 24 V CC Fijo 12 s
HRDM413M 120 V CA Fijo 3 m
HRDM415M 120 V CA Fijo 5 m
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Descripción
La serie HRDM combina una salida de relevador electromecánico con
un sistema de circuitos de temporización por microcontrolador. Ofrece
un funcionamiento de 12-230 V en cinco rangos y retardos de tiempo
ajustables fijos desde fábrica, integrados o externos con una exactitud
de repetición de ± 0,5 %. La clasificación nominal del contacto de
salida permite un funcionamiento directo para cargas pesadas, tales
como compresores, bombas, motores de ventilador, calentadores, etc.
Esta serie es ideal para aplicaciones de fabricantes originales donde los
costos son un factor importante.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. La
salida se desenergiza antes y durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, el relevador de salida se energiza y
permanece energizado hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto y de
bajo costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Contactos de salida NO,
SPDT, aislados de 30 A
Permiten el funcionamiento directo para cargas pesadas:
compresores, bombas, motores de ventilador, calentadores.
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 17.
278 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/hrdm
Resistencia externa vs. Retardo de tiempo
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE HRDM
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 0,1 s-100 min en 5 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 1 %, ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ± 2 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC -15 % - 20 %
24-230 V CA -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía CA ≤ 4 VA; CC ≤ 2 W
Salida
Tipo Relevador electromecánico
Forma Sin aislamiento, SPDT
Clasificaciones nominales SPDT-NO SPDT-NC
Propósito general 125/240 V CA 30 A 15 A
Resistiva 125/240 V CA 30 A 15 A
28 V CC 20 A 10 A
Carga del motor 125 V CA 1 HP* 1/4 HP**
240 V CA 2 HP** 1 HP**
Duración Mecánica - 1 x 106
;
Eléctrica - 1 x 105
, *3 x 104
, **6000
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones 76,7 x 51,3 x 38,1 mm (3 x 2 x 1,5 in)
Terminación Terminales de conector rápido macho de 6,35
mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente
cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no
definido
RETARDO DE ENCENDIDO
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo
seleccionado variando la resistencia en los terminales RT; a medida que
aumenta la resistencia, el retardo de tiempo disminuye.
Al seleccionar un RT externo, asigne las tolerancias del tiempo y el RT para el
ajuste de rango de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
y y RT
= Resistor de temporización externo en kΩ
En segundos o minutos
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 279
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/krdm
SERIE KRDM
Descripción
La serie KRDM es un relevador de retardo de tiempo compacto cuya
medida es de 50,8 mm (2 in) cuadrados. Su circuito de temporización de
estado sólido brinda una excelente estabilidad y exactitud de repetición.
Su encapsulación protege contra impactos, vibración, y humedad. La
serie KRDM es una opción económica para aplicaciones de fabricantes
originales que requieren aislamiento, fiabilidad, duración y tamaño
compacto.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, el relevador de salida se energiza y
permanece energizado hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Contactos de salida SPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial satinado.
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
KRDM1110S 12 V CC Fijo 10 s KRDM4110M 120 V CA Fijo 10 m
KRDM1130S 12 V CC Fijo 30 s KRDM4110S 120 V CA Fijo 10 s
KRDM120 12 V CC Perilla integrada 0,1-10 s KRDM4145S 120 V CA Fijo 45 s
KRDM121 12 V CC Perilla integrada 1-100 s KRDM420 120 V CA Perilla integrada 0,1-10 s
KRDM2110M 24 V CA/CC Fijo 10 m KRDM421 120 V CA Perilla integrada 1-100 s
KRDM215M 24 V CA/CC Fijo 5 m KRDM424 120 V CA Perilla integrada 1-100 min
KRDM220 24 V CA/CC Perilla integrada 0,1-10 s KRDM430 120 V CA Externo 0,1-10 s
KRDM221 24 V CA/CC Perilla integrada 1-100 s KRDM433 120 V CA Externo 0,1-10 min
KRDM223 24 V CA/CC Perilla integrada 0,1-10 min KRDM6115M 230 V CA Fijo 15 m
KRDM310.2S 24 V CC Fijo 0,2 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
C = Sonda común o contacto de transferencia
NO = Normalmente abierta
NC = Normalmente cerrada
En las unidades ajustables se incluye una
perilla, o terminales RT 4 y 5 para ajuste
externo. Consulte ajuste externo vs. gráfico
de retardo de tiempo Los contactos del
relevador están aislados.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
280 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/krdm
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
Corriente de salida/Temperatura ambiente
Especificaciones
Retardo de tiempo
Rango 0,1 s-100 min en 5 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ± 5 %
Entrada
Voltaje 12, 24 o 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CA/CC -15 %-20 %
110 V CC 120 y 230 V CA -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Contactos de relevador aislados
Forma SPDT
Clasificación nominal (a 40 °C) 10 A resistiva a 125 V CA;
5 A resistiva a 230 V CA y 28 V CC;
1/4 HP a 125 V CA
Máx. Voltaje de conmutación 250 V CA
Duración (Operaciones) Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y
salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE KRDM
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo
seleccionado variando la resistencia en los terminales RT; a medida que aumenta
la resistencia, el retardo de tiempo disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el
ajuste de rango de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de
tiempo y un RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no
definido
RETARDO DE ENCENDIDO
y y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 281
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/krps
SERIE KRPS
Descripción
La serie KRPS es un relevador de retardo de tiempo programado desde
fábrica disponible con 15 funciones y solo mide 50,80 mm (2 in). El
KRPS ofrece un amplio rango de retardos de tiempo fijos, integrados,
o ajustables externamente. Los contactos del relevador de salida
ofrecen una clasificación nominal de 10 A completa y aislamiento total.
Su circuito de temporización por microcontrolador brinda una excelente
estabilidad y exactitud de repetición. Su encapsulación protege
contra impactos, vibración, y humedad. La serie KRPS es una opción
económica para aplicaciones de fabricantes originales que requieren
aislamiento, duración y tamaño compacto. Incluye rangos y funciones de
tiempo especiales.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Contactor de salida SPDT
aislado de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Encapsulado para proteger contra impactos, vibración y
humedad
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
L1 N/L2
V = Voltaje
C = Sonda común o contacto de
transferencia
NC = Normalmente cerrada
NO = Normalmente abierta
S1 = Conmutador de inicio
UTL = Carga no medida
En las unidades ajustables se
incluye una perilla, o terminales RT
4 y 5 para ajuste externo. Consulte
ajuste externo vs. gráfica de retardo
de tiempo La carga no medida es
opcional. S1 no se utiliza en algunas
funciones.
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTABLE RETARDO DE
TIEMPO FUNCIONES
KRPS4160MM 120 V CA Fijo 60 m Retardo de
encendido
KRPS913MB 230 V CA Fijo 3 m Retardo de
apagado
KRPSA10.1SFT 24-240 V CA/CC Fijo 0,1 s Alternancia
KRPSA21RE 24-240 V CA/CC Integrado 0,1-10 s
Recirculación,
tiempo de actividad
inicial
KRPSA22B 24-240 V CA/CC Integrado 1-100 s Retardo de
apagado
KRPSA24M 24-240 V CA/CC Integrado 0,1-10 min Retardo de
encendido
KRPSD10.1SF 12-48 V CC Fijo 0,1 s
Sección que
recibe la carga con
circuito biestable
KRPSD21B 12-48 V CC Integrado 0,1-10 s Retardo de
apagado
KRPSD21M 12-48 V CC Integrado 0,1-10 s Retardo de
encendido
KRPSD22M 12-48 V CC Integrado 1-100 s Retardo de
encendido
KRPSD22S 12-48 V CC Integrado 1-100 s Activación única
KRPSD25S 12-48 V CC Integrado 1-100 min Activación única
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
282 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/krps
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 0,1 s-1000 h en 9 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 2 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 40 ms; ≤ 750 operaciones por minuto
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12-48 V CC; 24-240 V CA/CC
Tolerancia
12-48 V CC -15 % - 20 %
24-240 V CA/CC -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Contactos de relevador aislados
Forma SPDT
Clasificación nominal (a 40 °C) 10 A resistiva a 125 V CA
5 A resistiva a 230 V CA y 28 V CC
1/4 HP a 125 V CA
Máx. Voltaje de conmutación 250 V CA
Duración (Operaciones) Mecánica - 1 x 107
; Eléctrica - 1 x 105
SERIE KRPS
Funciones de temporizador
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
El relevador de salida se desenergiza antes y durante del retardo de
tiempo. Cuando finaliza el retardo de tiempo, la salida se energiza y
permanece energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de salida se
energiza. El retardo de tiempo se activa cuando se abre el interruptor
de inicio. El relevador de salida permanece energizado durante la
temporización. Cuando finaliza el retardo de tiempo, el relevador
de salida se desenergiza. El relevador de salida se energizará si el
interruptor de inicio está cerrado en el momento de aplicarse el voltaje
de entrada.
Restablecimiento: cuando se cierra de nuevo el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. Cuando se
aísla el voltaje de entrada se restablece la salida y el retardo de tiempo.
Funcionamiento (Recirculación)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo de ACTIVACIÓN. Cuando finaliza el tiempo de
ACTIVACIÓN, el relevador de salida se desenergiza y comienza el tiempo
INACTIVO. Cuando finaliza el tiempo INACTIVO, el relevador de salida se
energiza y se repite el ciclo tantas veces como se aplique el voltaje de
entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
primer retardo.
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho 6,35 mm
(0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
Corriente de salida/Temperatura ambiente
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RETARDO DE ENCENDIDO
RECIRCULACIÓN (ACTIVO EN TIEMPO INICIAL)
RETARDO DE APAGADO (RETARDO DESACTIVADO)
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 283
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/krps
Funcionamiento (Alternancia)
El voltaje de entrada debe aplicarse en todo momento para lograr un
funcionamiento adecuado. La funcionamiento comienza cuando el
relevador de salida es desenergizado. Cuando se cierra el S1 se activa
el próximo funcionamiento de alternancia. Al abrir el S1 (límite de cierre
accionado), comienza el retardo de tiempo. Cuando finaliza el retardo
de tiempo, la salida se energiza y permanece energizada hasta que el
S1 se abra de nuevo (o se cierre nuevamente). Luego el relevador de
salida se desenergiza y permanece así hasta que S1 se vuelva a abrir.
Cada vez que S1 se abre, se activa el retardo de tiempo y se transfiere
el relevador de salida.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio, el relevador de
salida (relevador o estado sólido) se energiza y comienza el retardo
de tiempo. Cuando finaliza el retardo de tiempo, el relevador de
salida se desenergiza. Abrir o cerrar el interruptor de inicio durante la
temporización no afectará el retardo de tiempo. Nota (para la mayoría
de temporizadores de un disparo): si el interruptor de inicio está cerrado
cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y comienza el retardo de tiempo.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. Cuando se aísla el
voltaje de entrada se restablece la salida y el retardo de tiempo.
Funcionamiento (Un disparo reiniciable, detector de movimiento)
El voltaje de entrada debe aplicarse antes y durante la temporización.
El relevador de salida es desenergizado. Con el cierre parcial o total del
interruptor S1, el relevador de salida se energiza y comienza el retardo
de tiempo. Cuando finaliza el retardo de tiempo, se desenergiza el
relevador de salida.
Restablecimiento: cuando se cierra nuevamente el S1, se restablece el
retardo de tiempo y se inicia de nuevo la temporización. Cuando se aísla
el voltaje de entrada se restablece la salida y el retardo de tiempo.
Funcionamiento (Activación única por límite de cierre, impulsos
DESACTIVADOS)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Al abrir el interruptor de inicio S1, el relevador de salida se energiza.
Cuando finaliza el retardo de tiempo, el relevador de salida se
desenergiza. Volver a cerrar y abrir el S1 durante la temporización no
afecta el retardo de tiempo. El relevador de salida no se energizará si se
abre el S1 cuando se aplica el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre al cumplirse el retardo
de tiempo y si S1 está cerrado. Cuando se aísla el voltaje de entrada se
restablece la salida y el retardo de tiempo.
SERIE KRPS
ALTERNATING RELAY
(TRAILING EDGE FLIP-FLOP)
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed ContacTD = Time Delay
R = Reset
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSD)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open ContactNC = Normally
Closed Contact = Incomplete
Time Delay
TD = Time Delay
R = Reset
TRAILING EDGE SINGLE SHOT
(IMPULSE-OFF)
LEYENDA
V = Voltaje
R = Restablecer
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
S1 = Interruptor de inicio
NO = Contactor normalmente abierto
NC = Contactor normalmente cerrado
t = Retardo de tiempo incompleto
TD, TD1, TD2 = Retardo de tiempo
C = Conteo
P = Duración de impulsos
= Tiempo no definido
RELEVADOR DE ALTERNANCIA
(LÍMITE DE CIERRE PARA CIRCUITO BIESTABLE)
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
UN DISPARO REINICIABLE
(DETECTOR DE MOVIMIENTO) (PSD)
ACTIVACIÓN ÚNICA POR LÍMITE DE CIERRE
(IMPULSOS DESACTIVADOS)
12 RELEVADORES DE RETARDO DE TIEMPO
284 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/ksd1
SERIE KSD1
L1 N/L2
Temporizador de retardo de encendido
Descripción
La serie KSD1 incluye dos terminales y conexión en serie con la carga.
La serie KSD1 es una opción ideal para aplicaciones de temporización
de retardo de encendido. Esta serie está diseñada para propósito
general en aplicaciones comerciales e industriales donde se requiere
un temporizador de estado sólido fiable, pequeño y económico. La
calibración de fábrica para retardos de tiempo fijos está dentro del
5 % del retardo de tiempo objetivo. La exactitud de repetición, en
condiciones estables, es del 0,5 % del retardo de tiempo seleccionado.
Esta serie está diseñada para voltajes CA y CC comunes. Retardos de
tiempo de 0,1 s a 1000 minutos disponibles en 6 rangos. El relevador
de salida tiene clasificación nominal uniforme de 1 A y de corriente de
inserción de 10 A. Los módulos son totalmente de estado sólido y están
encapsulados para proteger el sistema de circuitos electrónico.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece la
salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
+/ -5 % de exactitud del retardo de tiempo
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, y corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) de Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Diagrama de conexiones
La carga puede estar
conectada al terminal
n.º 3 o n.º 1.
RT se incluye cuando
se pide un ajuste
externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
KSD11120S 12 V CC Fijo 20 s
KSD1123 12 V CC Externo 0,1-10 min
KSD1230 24 V CA Integrado 0,1-10 s
KSD1320 24 V CC Externo 0,1-10 s
KSD1412S 120 V CA Fijo 2 s
KSD14130S 120 V CA Fijo 30 s
KSD1420 120 V CA Externo 0,1-10 s
KSD16130S 230 V CA Fijo 30 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 285
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ksd1
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE KSD1
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ±10%
Entrada
Voltaje 24, 120, o 230 V CA; 12 o 24 V CC
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de mantenimiento
mínima ≤ 40 mA
Corriente de filtración
de estado INACTIVO ≅ 7 mA a 230 V CA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conexión rápida hembra de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz) V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no
definido
RETARDO DE ENCENDIDO
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
286 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/ksdu
SERIE KSDU
Descripción
La serie KSDU son temporizadores de estado sólido para retardo
de encendido encapsulados que combinan sistemas de circuitos de
temporización digitales con funcionamiento de bajo voltaje universal. La
serie KSDU viene fija desde fábrica de 0,1 s a 10 230 s y no incluye el
interruptor DIP. Estas series son opciones perfectas para sistemas de
control de procesos y equipo de fabricantes originales.
Funcionamiento (Retardo de encendido)
al aislar el voltaje de entrada, se inicia el retardo de tiempo. La salida se
desenergiza antes y durante del retardo de tiempo. Cuando finaliza el
retardo de tiempo, la salida se energiza y permanece energizada hasta
que se aísle el voltaje de entrada.
Restablecimiento: Cuando se aísla el voltaje de entrada se restablece la
salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Voltaje universal 24-240 V CA/CC en 2 rangos
Sistema de circuitos digital
integrado Exactitud de repetición +/ - 5 %
Corriente uniforme de 1 A,
relevador de salida de estado
sólido con corriente de
inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Diseño para 2 terminales Permite la conexión en serie para una fácil instalación
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
KSDU8120 24-120 V CA/CC Fijo 20 s
KSDU811200 24-120 V CA/CC Fijo 1200 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
L = Carga
La carga puede estar
conectada al terminal n.º 3
o n.º 1.
La serie KSDU es fija.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 287
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ksdu
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango*
Fijo Fijo desde 0,1 s hasta 10 230 s
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 10 %
Tiempo de recirculación ≤150 ms
Retardo de tiempo vs.
temperatura y voltaje ± 5 %
Entrada
Voltaje 24-120 V CA/CC; 100-240 V CA/CC
Frecuencia de línea CC 50/60 Hz
Tolerancia ± 20 %
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de mantenimiento
mínima 40 mA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conexión rápida hembra de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
* Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada de la unidad en el momento
de cambiar la posición del interruptor.
SERIE KSDU
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no
definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
288 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/ksps
SERIE KSPS
Descripción
La serie KSPS es un módulo programado desde fábrica disponible en
14 funciones estándares. La serie KSPS ofrece un retardo de tiempo
individual, fijo, integrado o ajustable externamente. El relevador de
salida de estado sólido con corriente uniforme de 1 A y corriente
de inserción de 10 A brinda 100 millones de operaciones típicas. Su
circuito de temporización por microcontrolador brinda una excelente
estabilidad y exactitud de repetición. Su encapsulación protege
contra impactos, vibración, y humedad. La serie KSPS es una opción
económica para aplicaciones de fabricantes originales que requieren
tamaño compacto y fiabilidad en estado sólido.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) de Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
L = Carga
UTL = Carga no medida
V = Voltaje
S1 = Conmutador de inicio
L1 N/L2
(Positive Switching)
(Negative Switching)
Información para pedir
MODELO VOLTAJE DE ENTRADA AJUSTE RETARDO DE TIEMPO FUNCIONES
KSPS2180SB 24 V CA Fijo 80 s Retardo de apagado
KSPSA21FT 24-240 V CA, conmutación positiva Integrado 0,1-10 s Recirculación, tiempo de actividad inicial
KSPSN13MI 12-120 V CC, conmutación negativa Fijo 3 m Intervalo
KSPSN21B 12-120 V CC, conmutación negativa Integrado 0,1-10 s Retardo de apagado
KSPSP145SM 12-120 V CC, conmutación positiva Fijo 45 s Retardo de encendido
KSPSP22B 12-120 V CC, conmutación positiva Integrado 1-100 s Retardo de apagado
KSPSP35PSD 12-120 V CC, conmutación positiva Externo 1-100 min Un disparo reiniciable
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
(Conmutación positiva)
(Conmutación negativa)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 289
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ksps
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 0,1 s-1000 h en 9 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 2 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms; ≤ 1500 operaciones por minuto
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12-120 V CC; 24-240 V CA
Tolerancia ≤ ± 15 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Salida
Tipo Relevador de estado sólido
Clasificación nominal corriente uniforme de 1 A, corriente de inserción
de 10 A para 16 ms
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Corriente de filtración
de estado INACTIVO CA ≅ 5 mA a 240 V CA, CC≅ 1 mA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje* Montaje en superficie con un tornillo n.º 10
(M5 x 0,8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho 6,35 mm
(0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
SERIE KSPS
Funciones de temporizador
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
El relevador de salida se desenergiza antes y durante del retardo de
tiempo. Cuando finaliza el retardo de tiempo, la salida se energiza y
permanece energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de salida se
energiza. El retardo de tiempo se activa cuando se abre el interruptor
de inicio. El relevador de salida permanece energizado durante la
temporización. Cuando finaliza el retardo de tiempo, el relevador
de salida se desenergiza. El relevador de salida se energizará si el
interruptor de inicio está cerrado en el momento de aplicarse el voltaje
de entrada.
Restablecimiento: cuando se cierra de nuevo el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. Cuando se
aísla el voltaje de entrada se restablece la salida y el retardo de tiempo.
Funcionamiento (Recirculación)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo de ACTIVACIÓN. Cuando finaliza el tiempo de
ACTIVACIÓN, el relevador de salida se desenergiza y comienza el tiempo
INACTIVO. Cuando finaliza el tiempo INACTIVO, el relevador de salida se
energiza y se repite el ciclo tantas veces como se aplique el voltaje de
entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
primer retardo.
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open ContactNC = Normally
Closed ContacTD = Time Delay
R = Reset
= Undefined
Time
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed ContactTD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RETARDO DE ENCENDIDO
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
RECIRCULACIÓN
(ACTIVO EN TIEMPO INICIAL)
12 RELEVADORES DE RETARDO DE TIEMPO
290 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/ksps
Funcionamiento (Alternancia)
El voltaje de entrada debe aplicarse en todo momento para lograr un
funcionamiento adecuado. La funcionamiento comienza cuando el
relevador de salida es desenergizado. Cuando se cierra el S1 se activa
el próximo funcionamiento de alternancia. Al abrir el S1 (límite de cierre
accionado), comienza el retardo de tiempo. Cuando finaliza el retardo
de tiempo, la salida se energiza y permanece energizada hasta que el
S1 se abra de nuevo (o se cierre nuevamente). Luego el relevador de
salida se desenergiza y permanece así hasta que S1 se vuelva a abrir.
Cada vez que S1 se abre, se activa el retardo de tiempo y se transfiere
el relevador de salida.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece la
salida y el retardo de tiempo.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio, el relevador de
salida (relevador o estado sólido) se energiza y comienza el retardo
de tiempo. Cuando finaliza el retardo de tiempo, el relevador de
salida se desenergiza. Abrir o cerrar el interruptor de inicio durante la
temporización no afectará el retardo de tiempo. Nota (para la mayoría
de temporizadores de un disparo): si el interruptor de inicio está cerrado
cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y comienza el retardo deatiempo.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. Cuando se aísla el
voltaje de entrada se restablece la salida y el retardo de tiempo.
Funcionamiento (Activación única por límite de cierre, impulsos
DESACTIVADOS)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Al abrir el interruptor de inicio S1, el relevador de salida se energiza.
Cuando finaliza el retardo de tiempo, el relevador de salida se
desenergiza. Volver a cerrar y abrir el S1 durante la temporización no
afecta el retardo de tiempo. El relevador de salida no se energizará si se
abre el S1 cuando se aplica el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre al cumplirse el retardo
de tiempo y si S1 está cerrado. Cuando se aísla el voltaje de entrada se
restablece la salida y el retardo de tiempo.
Funcionamiento (Activación única invertida)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio S1, el relevador
de salida se desenergiza. Cuando finaliza el retardo de tiempo, el
relevador de salida se energiza. Volver a cerrar y abrir el S1 durante la
temporización no afecta el retardo de tiempo. El relevador de salida no
se energizará si se cierra el S1 cuando se aplica el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre al cumplirse el retardo
de tiempo y si S1 está abierto. Cuando se aísla el voltaje de entrada se
restablece la salida y el retardo de tiempo.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
El relevador de salida (relevador o estado sólido) se energiza durante
el retardo de tiempo. Cuando finaliza el retardo de tiempo, la salida se
desenergiza y permanece desenergizada hasta que se aísla el voltaje de
entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
SERIE KSPS
LEYENDA
V = Voltaje
R = Restablecer
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
S1 =Interruptor de inicio
NO = Contactor normalmente abierto
NC = Contactor normalmente cerrado
t = Retardo de tiempo incompleto
TD, TD1, TD2 = Retardo de tiempo
C = Conteo
P = Duración de impulsos
= Tiempo no definido
ALTERNATING RELAY
(TRAILING EDGE FLIP-FLOP)
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
TRAILING EDGE SINGLE SHOT
(IMPULSE-OFF)
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
INVERTED SINGLE SHOT
RELEVADOR DE ALTERNANCIA
(LÍMITE DE CIERRE PARA CIRCUITO BIESTABLE)
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
ACTIVACIÓN ÚNICA INVERTIDA
INTERNO (IMPULSOS ACTIVADOS)
ACTIVACIÓN ÚNICA POR LÍMITE DE CIERRE
(IMPULSOS DESACTIVADOS)
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 291
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/msm
SERIE MSM
Descripción
La serie MSM reemplaza la temporización tipo bimetal con un sistema
de circuitos de estado sólido fiable. No tiene piezas móviles para evitar
arcos eléctricos y el deterioro. Es una solución económica para los
diseñadores de fabricantes originales. Está disponible para montaje en
placa de circuitos impresa o montaje en superficie con una abrazadera
removible y conductores. La serie MSM ofrece restablecimiento
instantáneo al aislar la alimentación.
Funcionamiento (Retardo de encendido)
El retardo de tiempo se inicia al aplicar el voltaje de entrada. La salida se
desenergiza antes y durante del retardo de tiempo. Cuando finaliza el
retardo de tiempo, la salida se energiza y permanece energizada hasta
que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
analógico
Exactitud de repetición +/ - 5 %,
Calibración de fábrica +/ - 15 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
De larga duración Sin piezas móviles para evitar arcos eléctricos y deterioro
PCB o cableado Diseño flexible y facilidad para su instalación
Restablecimiento
instantáneo Se activa cuando se aísla la alimentación
Completamente
encapsulado Protege contra impactos, vibración y humedad
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = Carga
R = Cable rojo
B = Cable negro
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO TIPO DE CABLE LONGITUD DE CABLE mm (in)
MSM10.5W6 12 V CC Fijo 0,5 s Conductor estándar 152,4 (6)
MSM10.7W6 12 V CC Fijo 0,7 s Conductor estándar 152,4 (6)
MSM11W6 12 V CC Fijo 1 s Conductor estándar 152,4 (6)
MSM110W6 12 V CC Fijo 10 s Conductor estándar 152,4 (6)
MSM130W9 12 V CC Fijo 30 s Conductor estándar 228,6 (9)
MSM190W6 12 V CC Fijo 90 s Conductor estándar 152,4 (6)
MSM20.15W9 24 V CA Fijo 0,15 s Conductor estándar 228,6 (9)
MSM210P3 24 V CA Fijo 10 s Montaje en PC 12,7 (0,5)
MSM25W9 24 V CA Fijo 5 s Conductor estándar 228,6 (9)
MSM30.7W6 24 V CC Fijo 0,7 s Conductor estándar 152,4 (6)
MSM42W6 120 V CA Fijo 2 s Conductor estándar 152,4 (6)
MSM43W6 120 V CA Fijo 3 s Conductor estándar 152,4 (6)
MSM420W6 120 V CA Fijo 20 s Conductor estándar 152,4 (6)
MSM450W6 120 V CA Fijo 50 s Conductor estándar 152,4 (6)
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
MSM10.5W6
MSM210P3
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 39.
292 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/msm
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 0,05-180 s fijo
Exactitud de repetición ± 5 %
Tolerancia
(Calibración de fábrica) ± 15 %
Tiempo de recirculación ≤ 75 ms
Retardo de tiempo vs.
temperatura y voltaje ± 15 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia ± 10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Corriente de carga máxima Corriente de estado uniforme de 0,5 A a 25 °C;
Corriente de estado uniforme de 0,25 A a 60 °C
Corriente de mantenimiento
mínima 40 mA
Caída de voltaje ≅ 2,5 V a 0,5 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 2000 V de terminal de entrada a montaje en
superficie
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje A.) Montaje en PC con cables de 2,087 mm2
(14 AWG) (Puede instalarse en brazo
miniatura AMP Conector n.º 645980-1)
B.) Cables guía trenzado tipo 0,933 mm2
(18 AWG) con abrazadera de montaje
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-30 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso P: ≅ 31,2 g (1,1 oz) Peso: ≅ 34 g (1,2 oz)
SERIE MSM
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no
definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 293
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/orm
SERIE ORM
Descripción
La serie ORM se basa en una construcción de placa PC de menor costo.
Consta de contactos de relevador DPDT de 10 A aislados y todas las
conexiones son de terminales de conexión rápida macho de 6,35 mm
(0,25 in). El retardo de tiempo puede clasificarse como fijo desde
fábrica, perilla integrada o ajuste externo. Retardos de tiempo entre
0,05 y 300 s.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísle el voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
analógico con relevador
electromecánico
Exactitud de repetición +/ - 2 %
Contactos de salida DPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Construcción PCB abierta Reduce los costos en aplicaciones para fabricantes
originales
Accesorios
P1004-12, P1004-12-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
ORM120A17 120 V CA Fijo 7 s
ORM120A25 120 V CA Perilla integrada 3-300 s
ORM230A17 230 V CA Fijo 7 s
ORM24D13.5 24 V CC/28 V CC Fijo 3,5 s
ORM24D22 24 V CC Perilla integrada 0,5-30 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
RT se incluye cuando se pide un ajuste
externo.
Los contactos del relevador están
aislados.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 26.
294 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/orm
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 0,05 s-300 s en 5 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia Ajustable: rango garantizado
Fijo ±10%
Tiempo de recirculación Luego de temporización - ≤ 16 ms; Durante
temporización - 0,1 % del retardo de tiempo
máximo o 75 ms, lo que sea mayor
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 24 o 110 V CC; 24, 120 o 230 V CA
Tolerancia
24 V CC/CA -15 % - 20 %
110-230 V CA/CC -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía 2,25 W
Salida
Tipo Relevador electromecánico
Forma Aislada, DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1x107
; Eléctrica - 1 x 106
Protección
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Voltaje de aislamiento ≥1500 V RMS entre terminales de entrada
y salida
Mecánica
Montaje Montaje en superficie con cuatro tornillos n.º 6
(M3,5 x 0,6)
Dimensiones H 53,8 mm (2,12"); A 93,7 mm (3,69");
P 47,8 mm (1,88")
Terminación Terminales de conexión rápida macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 77 g (2,7 oz)
,
, ,
,
,
,
,
,
,
,
,
,
,
,
,
, , ,
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
Megaohmios
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
Guía de selección
SERIE ORM
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
NO = Contactor normalmente
abierto
NC = Contactor normalmente
cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 295
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/prlm
SERIE PRLM
Descripción
La serie PRLM está diseñada para utilizarse en aplicaciones de
temporización no críticas. Ofrece control de temporización ajustable
por perilla y de bajo costo, salida de relevador de 10 A completa, e
indicaciones por LED integrados. El ajusta por perilla brinda un rango de
tiempo garantizado de hasta 10 min en 6 rangos. Los LED integrados
indican si la unidad está o no en temporización (LED parpadeando)
además del estado de la salida.
Funcionamiento (Retardo de encendido)
El retardo de tiempo se inicia cuando se aplica el voltaje de entrada.
Los LED parpadean durante la temporización. Cuando finaliza el periodo
de retardo, los contactos de salida se energizan. Los LED permanecen
encendidos luego de que se cumpla el tiempo de la unidad.
Restablecimiento: el restablecimiento se cumple cuando se aísla el
voltaje de entrada. No hay salida falsa cuando se restablece durante la
temporización.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
electrónico con relevador
electromecánico
Exactitud de repetición +/ - 2 %
Retardo de tiempo
ajustable por perilla Rango de tiempo garantizado hasta por 10 min en 6 rangos
Contactos de salida DPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Indicación LED Proporciona estado del relevador tanto durante como
después de la temporización
Conexión por conector octal
estándar industrial Elimina la necesidad de utilizar conectores especiales
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje en superficie con dos tornillos o
anillos de presión n.º 6 en un riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Abrazaderas de presión PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilizar con conector octal NDS-8. Se
venden por pares.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
L1 N/L2
DPDT octal de 8 pines
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
PRLM41180 120 V CA Fijo 180 s
PRLM423 120 V CA Ajustable 1-60 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
8 PINES
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice B, página 512, Figura 24
296 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/prlm
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 0,05 s-600 s en 6 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia Ajuste por perilla: rango garantizado
Fijo: ± 10 %
Tiempo de restablecimiento ≤ 50 ms
Tiempo de recirculación Después de temporización: ≤ 20 ms
Durante la temporización: 0,1 % del retardo de
tiempo máximo o 75 ms, lo que sea mayor
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 12, 24, o 110 V CC; 24, 120, o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110-240 V CA/CC -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2,25 W
Salida
Tipo Relevador electromecánico
Forma Aislada, DPDT
Clasificación nominal 10 A resistiva a 28 V CC;
10 A resistiva a 240 V CA;
1/3 HP a 120/240 V CA
Duración Mecánica - 1x107
; Eléctrica - 1 x 106
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Indicación
Tipo LED
Funcionamiento Durante la temporización - parpadea
Salida energizada - iluminación uniforme
Mecánica
Montaje Conexión por puerto
Dimensiones H 91,6 mm (3,62"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
SERIE PRLM
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 297
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tdm-tdmh-tdml
SERIES TDM/TDMH/TDML
L1 N/L2
Temporizador de retardo de encendido
Descripción
Las Series TDM/TDMH/TDML son temporizadores de retardo de
encendido que combinan sistemas de circuitos digitales precisos con
contactos de relevador DPDT aislados en un paquete de conexión de
8 pines estándar de la industria. El ajuste por interruptor DIP permite
una selección precisa del retardo de tiempo en un rango de retardo de
tiempo completo. Las Series TDM/TDMH/TDML son el producto ideal
para paneles de control personalizados y diseñadores de fabricantes
originales.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, el relevador de salida se energiza y
permanece energizado hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Amplio rango de retardo
(0,1 s-2,8 h)
Seleccionable por el usuario mediante interruptores DIP
para sintonía fina en aplicaciones individuales.
Basado en microcontrolador Exactitud de repetición +/- 0,1 %
Ajuste de interruptor DIP Proporciona una exactitud de ajuste del tiempo inicial de
+/-2 %
Exactitud de ajuste +/-2 % Brinda flexibilidad para utilizar en la mayoría de
aplicaciones
Indicación LED Proporciona indicaciones visuales sobre el estado del
retardo de tiempo
Contactos de salida DPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje en superficie con dos tornillos o
anillos de presión n.º 6 en un riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Abrazaderas de presión PSC11 o PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilice la Serie PSC8 con conectores octales
NDS-8 o la Serie PSC11 con conectores NDS-11. Se
vende en juegos de dos unidades.
Conector octal P1011-6 para clasificación UL*
Conector de montaje en superficie de 8 pines con
terminales de tornillo de fijación. Clasificación nominal
10 A a 600 V CA.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Diagrama de conexiones
Los contactos del relevador están
aislados.
*
* Modelos de 8 pines con clasificación UL
al utilizarse en conjunto con el conector
P1011-6 solamente.
Información para pedir
MODELO VOLTAJE DE ENTRADA RANGO DE RETARDO
TDM120AL 120 V CA 1-1023 s en incrementos de 1 s
TDM12DL 12 V CC 1-1023 s en incrementos de 1 s
TDM230AL 230 V CA 1-1023 s en incrementos de 1 s
TDM24AL 24 V CA 1-1023 s en incrementos de 1 s
TDM24DL 24 V CC/28 V CC 1-1023 s en incrementos de 1 s
TDMH120AL 120 V CA 10-10 230 s en incrementos de 10 s
TDMH24AL 24 V CA 10-10 230 s en incrementos de 10 s
TDML110DL 110 V CC 0,1-102,3 s en incrementos de 0,1 s
TDML120AL 120 V CA 0,1-102,3 s en incrementos de 0,1 s
TDML12DL 12 V CC 0,1-102,3 s en incrementos de 0,1 s
TDML24DL 24 V CC/28 V CC 0,1-102,3 s en incrementos de 0,1 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
8 PINES
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 23.
298 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/tdm-tdmh-tdml
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango* 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
10-10 230 s en incrementos de 10 s
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Exactitud del ajuste ± 2 % o 50 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 50 ms
Tiempo de recirculación Durante la temporización - TDMH: ≤ 500 ms
TDM, TDML: ≤ 300ms
Retardo de tiempo vs.
temperatura y voltaje ±2%
Indicador LED que se activa durante la temporización;
el relevador se desenergiza
Entrada
Voltaje 12, 24, o 110 V CC; 24, 120, o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110 V CA/CC-230 V CA -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2,25 W
Salida
Tipo Relevador electromecánico
Forma DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y
salida
Mecánica
Montaje Conexión por puerto
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
*Para aplicaciones con certificación CE, la alimentación eléctrica debe aislarse de la unidad en el momento de
cambiar la posición del interruptor.
SERIES TDM/TDMH/TDML
Funcionamiento por interruptor binario
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 299
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tdu-tduh-tdul
SERIES TDU/TDUH/TDUL
Temporizadores de retardo de encendido
de estado sólido y encapsulados
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE ENTRADA RANGO DE TIEMPO
(SEGUNDOS)
TDUL3000A 24-120 V CA/CC 0.1-102.3
TDUL3001A 100-240 V CA/CC 0.1-102.3
TDU3000A 24-120 V CA/CC 1-1023
TDU3001A 100-240 V CA/CC 1-1023
TDU3003A 120-277 V CA/CC 1-1023
TDUH3000A 24-120 V CA/CC 10-10230
TDUH3001A 100-240 V CA/CC 10-10230
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Descripción
La serie TDU son temporizadores de estado sólido para retardo de
encendido encapsulados que combinan sistemas de circuitos de
temporización digitales con funcionamiento de bajo voltaje universal.
El TDU ofrece ajuste por interruptor DIP que permite una selección
precisa del retardo de tiempo en un rango de retardo de tiempo
completo. Esta serie es una opción perfecta para sistemas de control de
procesos y equipo de fabricantes originales.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Voltaje de entrada universal Cumple diversos requerimientos de aplicación
Basado en microcontrolador Exactitud de repetición +/- 0,5 % o 20 ms, lo que
sea mayor
Estado completamente
sólido y encapsulado
No tiene piezas móviles para evitar arcos eléctricos y
deterioro con el paso del tiempo, y están encapsulados
para proteger contra impactos, vibración y humedad.
3 rangos de tiempo
disponibles (0,1 s a 2,8 h) Versatilidad para utilizarse en la diversas aplicaciones
Ajuste por interruptor DIP Brinda exactitud de ajuste del tiempo inicial
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
L1 N/L2
La carga puede estar conectada al
terminal n.º 3 o n.º 1.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
300 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/tdu-tduh-tdul
SERIES TDU/TDUH/TDUL
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango* 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
10-10 230 s en incrementos de 10 s
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 10 %
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ± 5 %
Entrada
Voltaje 24-120 V CA/CC; 100-240 V CA/CC
Frecuencia de línea CC 50/60 Hz
Tolerancia ± 20 %
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de mantenimiento
mínima 40 mA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 2000 V en terminales RMS para montaje en
superficie
Resistencia de aislamiento ≥100 MΩ
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conexión rápida macho
de 6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Funcionamiento por interruptor binario
APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3 S 544 S 3000 S
0,1…102,3 1…1023 10…10.230
1
2
4
8
16
32
64
128
256
512
10
20
40
80
160
320
640
1280
2560
5120
* Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada de la unidad en el momento
de cambiar la posición del interruptor.
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 301
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/th1
SERIE TH1
Descripción
La serie TH1 es un relevador de estado sólido y temporizador combinado
en un control compacto y fácil de utilizar. Este dispositivo altamente
fiable elimina la necesidad de un relevador de estado sólido por
separado. Cuando se lo instala sobre una superficie metálica, puede
conmutar corrientes de carga de hasta 20 A en corriente uniforme, y
200 A en corriente de inserción.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 2 %,
Calibración de fábrica +/ - 5 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano
de obra
Corrientes de carga altas
hasta de 20 A y de 200 A en
corriente de inserción
Permite un funcionamiento directo de motores, luces y
calentadores sin necesidad de un contactor
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad
Superficie de montaje
metalizada
Facilita la transferencia de calor para aplicaciones de
corriente alta
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) de Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
L1 N/L2
V = Voltaje
S1 = Interruptor de inicio para
corriente baja opcional
L = Carga
RT se incluye cuando se pide
un ajuste externo.
Información para pedir
MODELO
CLASIFICACIÓN
NOMINAL DE
SALIDA
VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
TH1B633 10 A 230 V CA Integrado 2-180 s
TH1C415 20 A 120 V CA Fijo 5 s
TH1C621 20 A 230 V CA Externo 0,1-3 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
302 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/th1
Guía de selección
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
Kohmios
* Cuando seleccione un RT externo, agregue al
menos 15% de tolerancia para la unidad y el RT.
,
,
,
,
,
,
,
,
,
,
,
,
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Especificaciones
Retardo de tiempo
Rango 0,1-600 s en 4 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Tiempo de recirculación ≤ 150 ms
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 15 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Corrientes de carga máxima Salida Corriente Corriente
uniforme de inserción**
A 6 A 60 A
B 10 A 100 A
C 20 A 200 A
Corriente de carga mínima 100 mA
Caída de voltaje ≅ 2,5 V a corriente nominal
Corriente de filtración
de estado INACTIVO ≅ 5 mA a 230 V CA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje ** Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
** Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto que se incluye. La
temperatura máxima en la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
SERIE TH1
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 303
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/thd1b4105s
THD1B410.5S
Descripción
El THD1B410.5S combina sistemas de circuitos de temporización
precisos con conmutación de estado sólido de alta potencia. Puede
conmutar motores, luces y calentadores directamente sin un contactor.
Puede reducir los costos por componente y mano de obra, y aumentar
la fiabilidad con estos temporizadores pequeños y fáciles de utilizar.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 1 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano de
obra
Corrientes de carga altas
hasta de 20 A y de 200 A en
corriente de inserción
Permite un funcionamiento directo de motores, luces y
calentadores sin necesidad de un contactor
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Superficie de montaje
metalizada
Facilita la transferencia de calor para aplicaciones de
corriente alta
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
L1 N/L2
V = Voltaje
S1 = Interruptor de inicio para
corriente baja opcional
L = Carga
RT se incluye cuando se pide
un ajuste externo.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
304 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/thd1b4105s
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Corriente de carga máxima Salida Corriente Corriente
uniforme de inserción**
A 6 A 60 A
B 10 A 100 A
C 20 A 200 A
Corriente de carga mínima 100 mA
Caída de voltaje ≅ 2,5 V a corriente nominal
Corriente de filtración
de estado INACTIVO ≅ 5 mA a 230 V CA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje ** Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
**Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto que se incluye. La
temperatura máxima de la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
THD1B410.5S
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de
rango de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y
un RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
y y y RT
= Resistor de temporización externo en kΩ
En segundos o minutos
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 305
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tmv8000-tsu2000
SERIES TMV8000/TSU2000
Descripción
Las Series TMV y TSU son temporizadores de retardo de encendido
de voltaje universal. Dos modelos incluyen todos los retardos de
tiempo y voltajes comunes. Disponible con retardo de tiempo ajustable
por perilla o externamente. Sus dos terminales simples pueden
conectarse fácilmente en serie con una bobina de relevador, bobina de
contactor, solenoides, luces, motores pequeños, etc., para retardar su
energización, prevenir ciclos cortos o para secuenciar múltiples cargas.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Voltaje de funcionamiento
CA/CC universal Brinda flexibilidad para utilizar en todos los sistemas
Estado sólido completo
y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad
Dos terminales de conexión
en serie con la carga
Proporciona una rápida y fácil instalación para sistemas
nuevos o existentes
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas
Accesorios
P1004-95, P1004-95-X Versa-Pot
potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
La carga puede estar conectada
al terminal n.º 3 o n.º 1.
El TMV integra una perilla
de ajuste.
El TSU tiene ajuste externo
para terminales 4 y 5.
L1 N/L2
Información para pedir
MODELO VOLTAJE DE ENTRADA AJUSTE RETARDO DE TIEMPO
TMV8000 24-240 V CA/CC Integrado 0,1-8 min
TSU2000 24-240 V CA/CC Externo 5-480 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Temporizador de retardo de encendido
de voltaje universal
TMV8000
TSU2000
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
306 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/tmv8000-tsu2000
SERIES TMV8000/TSU2000
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Guía de selección
Segundos Megaohmios
,
,
,
,
,
,
Retardo de tiempo*
* Cuando seleccione un RT externo,
agregue al menos 20 % de
tolerancia para la unidad y el RT.
Gráfico de selección de RT
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 5-480 s (TSU2000)
0,1-8 min (TMV8000)
Exactitud de repetición ± 2 %
Tolerancia
(Calibración de fábrica) ≤ ± 10 %
Tiempo de restablecimiento ≤ 100 ms
Entrada
Voltaje 24-240 V CA/CC ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Corriente de carga máxima Corriente uniforme de 1 A, corriente de
inserción de 10 A a 55 °C
Corriente de mantenimiento
mínima ≤ 40 mA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 70 °C/-30 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 307
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/trm
SERIE TRM
Descripción
La serie TRM es una combinación de sistemas de circuitos electrónicos
analógicos y salida de relevador electromecánico. Proporciona un
aislamiento de entrada a salida con un amplio conjunto de voltajes de
entrada y rangos de tiempo. Conexiones principales directas estándares,
restablecimiento rápido, carcasa resistente y buena exactitud de
repetición hacen del TRM una opción adaptable a cualquier aplicación de
fabricantes originales.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. La
salida se desenergiza antes y durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, el relevador de salida se energiza y
permanece energizado hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
electrónico con relevador
electromecánico
Exactitud de repetición +/ - 2 %
Contactos de salida SPDT o
DPDT aislados de 10 A Permite controlar las cargas para voltajes CA o CC.
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje en superficie con dos tornillos o
anillos de presión n.º 6 en un riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 11 pines y 35 mm.
Montaje en superficie con dos tornillos o anillos
de presión n.º 6 en un riel DIN de 35 mm. Utilice
abrazaderas de presión PSC11.
L1 N/L2
L1 N/L2
L1 N/L2
DPDT octal de 8 pines
SPDT octal de 8 pines
DPDT de 11 pines
V = Voltaje
RT se incluye cuando
se pide un ajuste
externo. Los contactos
del relevador están
aislados.
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE ENTRADA AJUSTE SALIDA TOLERANCIA DE TIEMPO RETARDO DE TIEMPO
TRM120A2X30 120 V CA Perilla Octal, DPDT +/- 20 % 1-30 s
TRM120A2Y120 120 V CA Perilla Octal, DPDT +/- 10 % 2-120 s
TRM120A2Y180 120 V CA Perilla Octal, DPDT +/- 10 % 2-180 s
TRM24A8Y5 24 V CA Externo Octal, SPDT sin potenciómetro +/- 10 % 0,1-5 s
TRM24D1X10 24 V CC/28 V CC Fijo Octal, DPDT +/- 20 % 10 s
TRM24D1X2 24 V CC/28 V CC Fijo Octal, DPDT +/- 20 % 2 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
*
* Modelos de 8 pines con clasificación UL
al utilizarse en conjunto con el conector
P1011-6 solamente.
8 PINES
11 PINES
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 24.
308 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/trm
Accesorios
Abrazaderas de presión PSC11 o PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilice la Serie PSC8 con conectores octales
NDS-8 o la Serie PSC11 con conectores NDS-11.
Se vende en juegos de dos unidades.
Conector octal P1011-6 para clasificación UL*
Conector de montaje en superficie de 8 pines con
terminales de tornillo de fijación. Clasificación nominal
10 A a 600 V CA.
P1004-13, P1004-13-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) de Versa-Pot.
Acabado negro industrial semibrillante.
Guías de selección
Segundos
Rango
, ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Megaohmios
Retardo de tiempo*
* Cuando seleccione un RT externo,
agregue al menos 15 a 30 % de
tolerancia para la unidad y el RT.
Gráfico de selección de RT
RT externo Tabla de selección de
número de parte
VALOR NÚMERO DE PARTE
1 MΩ
1,5 MΩ
2 MΩ
3 MΩ
5 MΩ
1 MΩ
1,5 MΩ
2 MΩ
3 MΩ
5 MΩ
P1004-16
P1004-15
P1004-14
P1004-12
P1004-13
P1004-16-X
P1004-15-X
P1004-14-X
P1004-12-X
P1004-13-X
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE TRM
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 50 ms-100 min en 15 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia de tiempo fija y
exactitud de ajuste ± 5, 10, o 20 %
Tiempo de restablecimiento ≤ 50 ms
Tiempo de recirculación Después de temporización: ≤ 20 ms
Durante la temporización: 0,1 % del retardo de
tiempo máximo o 75 ms, lo que sea mayor
Retardo de tiempo vs.
temperatura y voltaje ≤± 10 %
Entrada
Voltaje 24 o 110 V CC; 24, 120 o 230 V CA
Tolerancia
24 V CC/CA -15 % - 20 %
110-230 V CA/CC -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2,25 W
Salida
Tipo Relevador electromecánico
Forma DPDT o SPDT aislados
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y
salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Conexión por puerto
Dimensiones H 91,6 mm (3,62"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 u 11 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 309
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ts1
SERIE TS1
Temporizador de retardo de encendido
Descripción
La serie TS1 ofrece fiabilidad y desempeño demostrados con años de
uso en equipos de fabricantes originales y aplicaciones comerciales. Este
módulo de temporización encapsulado para uso general puede controlar
corrientes de carga entre 5 mA y 1 A. Puede ser conectado en serie con
contactos, relevadores, válvulas, solenoides, motores pequeños y luces.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
analógico Exactitud de repetición +/ - 2 %
Retardo de tiempo ajustable
externamente o fijo
Para brindar mayor flexibilidad, la configuración del retardo
de tiempo externo es programable entre 0,05 s y 10 min en
8 rangos
Rango de corriente de
carga de 5 mA a 1 A
La corriente de mantenimiento mínima de 5 mA garantiza
un funcionamiento adecuado incluso en cargas livianas
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Dos conexiones de carga con
terminales en serie
Permite una conexión en serie con contactos,
relevadores, válvulas, solenoides, motores pequeños y
luces. Proporciona una rápida y fácil instalación para
sistemas nuevos o existentes
Diagrama de conexiones
L1 N/L2
La carga puede estar
conectada al terminal
n.º 3 o n.º 1.
RT se incluye cuando se
pide un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
TS1211.5 24 V CA Fijo 1,5 s TS1412 120 V CA Fijo 2 s
TS121150 24 V CA Fijo 150 s TS14120 120 V CA Fijo 20 s
TS12130 24 V CA Fijo 30 s TS14130 120 V CA Fijo 30 s
TS1214 24 V CA Fijo 4 s TS1415 120 V CA Fijo 5 s
TS12190 24 V CA Fijo 90 s TS1416 120 V CA Fijo 6 s
TS1221 24 V CA Externo 0,05-3 s TS1421 120 V CA Externo 0,05-3 s
TS1222 24 V CA Externo 0,5-60 s TS1422 120 V CA Externo 0,5-60 s
TS1224 24 V CA Externo 5-600 s TS1423 120 V CA Externo 2-180 s
TS13115 24 V CC Fijo 15 s TS1424 120 V CA Externo 5-600 s
TS1321 24 V CC Externo 0,05-3 s TS1612 230 V CA Fijo 2 s
TS1410.25 120 V CA Fijo 0,25 s TS1615 230 V CA Fijo 5 s
TS14110 120 V CA Fijo 10 s TS1621 230 V CA Externo 0,05-3 s
TS141180 120 V CA Fijo 180 s TS1622 230 V CA Externo 0,5-60 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
310 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/ts1
Accesorios
P1004-XX, P1004-XX-X Versa-Pot
Montable en panel, potenciómetro industrial
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Módulo de ajuste para conexión VTP(X)(X)
Montaje en módulos con terminales de ajuste en línea.
Clasificación nominal de 0,25 W a 55 °C. Disponible en
valores de resistencia de 5 kΩ a 5 MΩ
Tabla de selección para accesorios de ajuste para conexión VTP
Todos los demás voltajes 12 V CC
Retardo de
tiempo
Número de
parte VTP
Retardo de
tiempo
Número de
parte VTP
1 - 0,05-3 s
2 - 0,5-60 s
3 - 2-180 s
4 - 5-600 s
VTP4B
VTP4F
VTP4J
VTP5N
1 - 0,05-1 s
2 - 0,5-20 s
3 - 2-60 s
4 - 5-120 s
VTP2A
VTP2E
VTP2F
VTP2H
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango
12 V CC 0,05-120 s en 4 rangos ajustables o fijos
(1 MΩ RT máximo)
Otros voltajes 0,05-600 s en 4 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 10 %
Tiempo de recirculación Después de temporización – ≤ 16 ms
Durante la temporización - 0,1 % de retardo de
tiempo o 75 ms, lo que sea mayor
Retardo de tiempo vs.
temperatura y voltaje ≤ ±10%
Entrada
Voltaje 12, 24 o 120 V CC; 24, 120 o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de mantenimiento
mínima 5 mA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie de
montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 80 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Gráfica de selección
Segundos
24 V CC o CC bien SOLAMENTE
,
, , ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Megaohmios
Retardo de tiempo*
Gráfico de selección de RT
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
1 Megaohmio máximo para unidades de 12 V CC
SERIE TS1
V = Voltaje
NO = Contactor normalmente
abierto
NC = Contactor normalmente
cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 311
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tsd1
SERIE TSD1
L1 N/L2
Temporizador de retardo de encendido
Descripción
La serie TSD1 está diseñada para aplicaciones industriales y comerciales
más exigentes donde se requiere un mayor rendimiento y tamaño
compacto. La calibración de fábrica para retardos de tiempo fijos
está dentro del 1 % del retardo de tiempo objetivo. La exactitud de
repetición, en condiciones estables, es del 0,1 % del retardo de tiempo.
La serie TSD1 es apta para operar en un extenso rango de temperatura.
Disponible con retardos de tiempo de 0,1 s a 100 horas. El relevador
de salida tiene clasificación nominal uniforme de 1 A y de corriente de
inserción de 10 A. Los módulos son totalmente de estado sólido y están
encapsulados para proteger el sistema de circuitos electrónico.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,1 %,
+/ -1 % de exactitud del retardo de tiempo
Rango de temperatura
extendido
Clasificado para temperatura de funcionamiento de 75 °C y
compatibilidad con aplicaciones de calor extremo.
Diseño compacto y de
bajo costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, y corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado sólido completo
y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
La carga puede estar
conectada al terminal
n.º 3 o n.º 1.
RT se incluye cuando se
pide un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
TSD1311.2S 24 V CC Fijo 1,2 s
TSD1321 24 V CC Externo 1-100 s
TSD1424 120 V CA Externo 1-100 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
312 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido
www.littelfuse.com/tsd1
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Especificaciones
Retardo de tiempo
Rango 0,1 s-100 h en 7 rangos ajustables o fijos
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ±1%
Entrada
Voltaje 12, 24, 120 V CC; 24, 120, 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Corriente de carga máxima corriente uniforme de 1 A,
corriente de inserción de 10 A a 60 °C
Corriente de mantenimiento
mínima ≤ 40 mA
Corriente de filtración
de estado INACTIVO ≅ 7 mA a 230 V CA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
SERIE TSD1
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no
definido
RETARDO DE ENCENDIDO
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos, minutos u horas
y y
y
y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 313
Relevadores de retardo de tiempo
Dedicado — Retardo de encendido, normalmente cerrado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ts441165
TS441165
Descripción
El TS441165 es un temporizador de retardo de encendido analógico con un
relevador de salida de estado sólido normalmente cerrado. A diferencia de
un temporizador de intervalo, la carga se energiza antes y durante el periodo
de retardo de tiempo. Puede ser utilizado como un retardo de tiempo para
intervalo de encendido rápido al cerrar el S1 al asignar voltaje de entrada.
Funcionamiento (Retardo de encendido NC)
Cuando se asigna el voltaje de entrada, la carga se energiza de
inmediato. Cuando se cierra el interruptor de inicio, comienza el retardo
de tiempo. Cuando finaliza el retardo de tiempo, la carga se desenergiza.
Restablecimiento: cuando se reactiva el interruptor de inicio, la carga
se energiza de nuevo y el retardo de tiempo es restablecido. Cuando se
aísla el voltaje de entrada se restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos analógico Exactitud de repetición +/ - 2 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de estado
sólido de corriente uniforme
de 1 A, o corriente de inserción
de 10 A
Proporciona 100 millones de operaciones en
condiciones típicas.
Carga energizada antes y
durante el retardo de tiempo Funcionamiento más rápida
Estado sólido completo y
encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni
desgaste prematuro y unidad encapsulada para proteger
contra choques eléctricos, vibración y humedad.
Relevador de salida
normalmente cerrado
Puede ser utilizado como un retardo de tiempo para
intervalo de encendido más rápido
Accesorios
P1004-XX, P1004-XX-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Diagrama de conexiones
L1 N/L2
V = Voltaje
S1 = Conmutador de inicio
L = Carga
RT se incluye cuando se pide
un ajuste externo.
12
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
RELEVADORES DE RETARDO DE TIEMPO
314 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de encendido, normalmente cerrado
www.littelfuse.com/ts441165
Accesorios
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Módulo de ajuste para conexión VTP(X)(X)
Montaje en módulos con terminales de ajuste en línea.
Clasificación nominal de 0,25 W a 55 °C. Disponible en
valores de resistencia de 5 kΩ a 5 MΩ
Tabla de selección para accesorios de ajuste para conexión VTP
Retardo
de tiempo
Número de
parte VTP
1 - 0,05-3 s
2- 0,5-60 s
3 - 2-180 s
4 - 5-600 s
VTP4B
VTP4F
VTP4J
VTP5N
Guía de selección
Segundos
, ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Megaohmios
Retardo de tiempo*
Gráfico de selección de RT
* Cuando seleccione un RT externo, agregue al
menos 20 % de tolerancia para la unidad y el RT.
Diagrama de funciones
DELAY-ON-MAKE (NORMALLY CLOSED)
TS441165
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 165 s
Ajuste Fijo
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor; bajo
condiciones fijas
Tolerancia
(Calibración de fábrica) ≤ ± 10%
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Tiempo de recirculación ≤ 150 ms
Entrada
Voltaje 120 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NC, cerrado durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conexión rápida macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
S1 =Interruptor de inicio
L = Carga
TD = Retardo de tiempo
R = Restablecer
= Tiempo
no definido
RETARDO DE ENCENDIDO (CERRADO INICIALMENTE )
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 315
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hrdb
SERIE HRDB
Temporizador de retardo de apagado
Descripción
La serie HRDB combina una salida de relevador electromecánico con
un sistema de circuitos de temporización por microcontrolador. La
serie HRDB ofrece un funcionamiento de 12-230 V en cinco opciones
y retardos de tiempo ajustables fijos desde fábrica, integrados, o
externos con una exactitud de repetición de ± 0,5 %. La clasificación
nominal del contacto de salida permite un funcionamiento directo
para cargas pesadas, tales como compresores, bombas, motores de
ventilador, calentadores, etc. La serie HRDB es ideal para aplicaciones de
fabricantes originales donde los costos son un factor importante.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de salida se
energiza. El retardo de tiempo se activa cuando se abre el interruptor
de inicio. El relevador de salida permanece energizado durante la
temporización. Cuando finaliza el retardo de tiempo, el relevador de salida
se desenergiza. El relevador de salida se energizará si el interruptor de
inicio está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: cuando se cierra nuevamente el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Contactos de salida NO,
SPDT, aislados de 30 A
Permiten el funcionamiento directo para cargas pesadas:
compresores, bombas, motores de ventilador, calentadores.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
V = Voltaje
S1 = Conmutador de inicio
L = Carga medida
UTL = Carga (opcional) no medida
NO = Normalmente abierta
C = Sonda común o contacto de
transferencia
NOTA: Se incluye una perilla,
o terminales 4 y 5, solo en las
unidades ajustables. RT se incluye
cuando se pide un ajuste externo.
Los contactos del relevador están
aislados. Las líneas discontinuas
son conexiones internas. La carga
no medida es opcional.
Diagrama de conexiones
L1 N/L2
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE TOLERANCIA
DE TIEMPO
RETARDO DE
TIEMPO MODELO VOLTAJE DE
ENTRADA AJUSTE TOLERANCIA DE
TIEMPO
RETARDO DE
TIEMPO
HRDB1110M 12 V CC Fijo +/ -5 % 10 m HRDB223 24 V CA Integrado +/ -5 % 0,1-10 min
HRDB117S 12 V CC Fijo +/ -5 % 7 s HRDB321 24 V CC Integrado +/ -5 % 1-100 s
HRDB120 12 V CC Integrado +/ -5 % 0,1-10 s HRDB324 24 V CC Integrado +/ -5 % 1-100 min
HRDB121 12 V CC Integrado +/ -5 % 1-100 s HRDB423 120 V CA Integrado +/ -5 % 0,1-10 min
HRDB124 12 V CC Integrado +/ -5 % 1-100 min HRDB623 230 V CA Integrado +/ -5 % 0,1-10 min
HRDB21A65M 24 V CA Fijo +/ -1 % 65 m
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 17.
316 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/hrdb
SERIE HRDB
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 0,1 s-100 min en 5 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 1 %, ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ± 2 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC -15 % - 20 %
24-230 V CA -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía CA ≤ 4 VA; CC ≤ 2 W
Salida
Tipo Relevador electromecánico
Forma Aislada, SPDT
Clasificaciones nominales SPDT-NO SPDT-NC
Propósito general 125/240 V CA 30 A 15 A
Resistiva 125/240 V CA 30 A 15 A
28 V CC 20 A 10 A
Carga del motor 125 V CA 1 HP* 1/4 HP**
240 V CA 2 HP** 1 HP**
Duración Mecánica - 1 x 106
;
Eléctrica - 1 x 105
, *3 x104
, **6000
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie de
montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,1 mm (1,51")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no
definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 317
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hrdb
SERIES HRPS/HRIS
Descripción
Las Series HRPS/HRIS combinan una salida de relevador
electromecánico con un sistema de circuitos de temporización por
microcontrolador. Es un módulo programado desde fábrica disponible en
13 funciones estándar. Ofrece un funcionamiento de 12-240 V en dos
rangos y retardos de tiempo ajustables fijos desde fábrica, integrados,
o externos con una exactitud de repetición de ± 0,5 %. La clasificación
nominal del contacto de salida permite un funcionamiento directo
para cargas pesadas, tales como compresores, bombas, motores de
ventilador, calentadores, etc. Esta serie es ideal para aplicaciones de
fabricantes originales donde los costos son un factor importante. El
HRIS tiene contactos de relevador SPDT no aislados, mientras que el
HRIS tiene contactos de relevador SPDT aislados. Ambos ofrecen las
funciones de temporizador más comunes en la industria.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
El relevador de salida (relevador o estado sólido) se energiza durante
el retardo de tiempo. Cuando finaliza el retardo de tiempo, la salida se
desenergiza y permanece desenergizada hasta que se aísla el voltaje de
entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
calibración de fábrica +/ - 2 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Contactos de salida SPDT de
30 A, normalmente abiertos Permiten el funcionamiento directo con cargas pesadas
Encapsulado Protege contra impactos, vibración y humedad
L1 N/L2 HRPS
Los contactos del relevador no
están aislados.
L1 N/L2 HRIS
Los contactos del
relevador
están aislados.
S1 = Conmutador de inicio
UTL = Carga (opcional) no medida
NO = Normalmente abierta
NC = Normalmente cerrada
C = Común
Se incluye una perilla, o terminales 4
y 5, solo en las unidades ajustables.
El RT se usa cuando se pide un ajuste
externo.
S1 = Conmutador de inicio
UTL = Carga (opcional) no medida
NO = Normalmente abierta
NC = Normalmente cerrada
C = Común
Se incluye una perilla, o terminales 4
y 5, solo en las unidades ajustables.
El RT se usa cuando se pide un ajuste
externo.
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE ENTRADA AJUSTABLE RETARDO
DE TIEMPO FUNCIONES
HRISW21FT 24-240 V CA/24-110 V CC Integrado 0,1-10 s Alternancia
HRISW27I 24-240 V CA/24-110 V CC Integrado 0,1-10 h Intervalo
HRPSD12HI 12-48 V CC Fijo 2 h Intervalo
HRISW25B 24-240 V CA/24-110 V CC Integrado 1-100 min Retardo de
apagado
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 17.
318 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/hrps-hris
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16), P1015-13 (AWG 10/12)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagramas de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
ALTERNATING RELAY
(TRAILING EDGE FLIP-FLOP)
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 0,1 s-1000 h en 9 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 2 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ± 2 %
Entrada
Voltaje 12-48 V CC; 24-240 V CA/24-110 V CC
Tolerancia
12-48 V CC -15 % - 20 %
24-110 V CC/240 V CA -20 % - 10 %
Frecuencia de línea 50/60 Hz
Consumo de energía CA ≤ 4 VA; CC ≤ 2 W
Salida
Tipo Relevador electromecánico
Forma SPDT
Clasificaciones nominales SPDT-NO SPDT-NC
Propósito general
125/240 V CA 30 A 15 A
Resistiva
125/240 V CA 30 A 15 A
28 V CC 20 A 10 A
Carga de motor
125 V CA 1 HP* 1/4 HP**
240 V CA 2 HP** 1 HP**
Duración Mecánica - 1 x 106
Eléctrica - 1 x 105
, *3 x104
, **6000
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y
salida; unidades aisladas
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 76,2 mm (3"); A 50,8 mm (2");
P 38,1 mm (1,5")
Terminación Terminales de conector rápido macho 6,35 mm
(0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
SERIES HRPS/HRIS
V = Voltaje
S1 = Conmutador de
inicio
NO = Contactor
normalmente
abierto
NC = Contactor
normalmente
cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no
definido
INTERVALO (IMPULSOS ACTIVADOS)
RELEVADOR DE ALTERNANCIA
(LÍMITE DE CIERRE PARA
CIRCUITO BIESTABLE)
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 319
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/krdb
SERIE KRDB
Descripción
La serie KRDB es un relevador de retardo de tiempo compacto cuya
medida es de 50,8 mm (2 in) cuadrados. Su circuito de temporización
por microcontrolador brinda una excelente estabilidad y exactitud de
repetición. Su encapsulación protege contra impactos, vibración, y
humedad. La serie KRDB es un método económico para aplicaciones
de fabricantes originales que requieren aislamiento, fiabilidad, duración y
tamaño compacto.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de salida se
energiza. El retardo de tiempo se activa cuando se abre el interruptor
de inicio. El relevador de salida permanece energizado durante la
temporización. Cuando finaliza el retardo de tiempo, el relevador
de salida se desenergiza. El relevador de salida se energizará si el
interruptor de inicio está cerrado en el momento de aplicarse el voltaje
de entrada.
Restablecimiento: cuando se cierra nuevamente el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 5 %
Contactos de salida SPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Protege contra impactos, vibración y humedad
Diseño compacto y de bajo
costo que mide 50,8 mm
(2 in)
Brinda flexibilidad para aplicaciones de fabricantes
originales
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
Diagrama de conexiones
L1 N/L2
V = Voltaje
S1 = Conmutador de inicio
C = Sonda común o contacto de
transferencia
NO = Normalmente abierta
NC = Normalmente cerrada
UTL = Carga (opcional) no medida
Incluye una perilla para unidades
ajustable. La carga no medida es
opcional. Los contactos del relevador
están aislados.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
KRDB110.1S 12 V CC Fijo 0,1 s KRDB31120S 24 V CC Fijo 20 s
KRDB112.5S 12 V CC Fijo 2,5 s KRDB415S 120 V CA Fijo 5 s
KRDB1120M 12 V CC Fijo 20 m KRDB4160S 120 V CA Fijo 60 s
KRDB115M 12 V CC Fijo 5 m KRDB420 120 V CA Integrado 0,1-10 s
KRDB120 12 V CC Integrado 0,1-10 s KRDB421 120 V CA Integrado 1-100 s
KRDB124 12 V CC Integrado 1-100 min KRDB422 120 V CA Integrado 10-1000 s
KRDB21180S 24 V CA/CC Fijo 180 s KRDB423 120 V CA Integrado 0,1-10 min
KRDB217S 24 V CA/CC Fijo 7 s KRDB424 120 V CA Integrado 1-100 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
320 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/krdb
Accesorios
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Corriente de salida/Temperatura ambiente
SERIE KRDB
Especificaciones
Retardo de tiempo
Tipo Microcontrolador con sistema de circuitos
de vigilancia
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de recirculación ≤ 150 ms
Tiempo de inicio ≤ 40 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ± 5 %
Entrada
Voltaje 12, 24, 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110 V CC, 120 o 230 V CA -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Contactos de relevador aislados
Forma SPDT
Clasificación nominal (a 40 °C) 10 A resistiva a 125 V CA;
5 A resistiva a 230 V CA y 28 V CC;
1/4 HP a 125 V CA
Máx. Voltaje de conmutación 250 V CA
Duración (Operaciones) Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
y y y
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
Rangos de
retardo
de tiempo
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 321
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ksdb
SERIE KSDB
Descripción
La serie KSDB está diseñada para propósito general en aplicaciones
comerciales e industriales donde se requiere un temporizador de
estado sólido fiable, pequeño y económico. La calibración de fábrica
para retardos de tiempo fijos está dentro del 5 % del retardo de tiempo
objetivo. La exactitud de repetición, en condiciones estables, es del
0,5 % del retardo de tiempo seleccionado. Esta serie está diseñada para
voltajes CA y CC comunes. Retardos de tiempo de 0,1 s a 1000 minutos
disponibles en 6 rangos. El relevador de salida tiene clasificación
nominal uniforme de 1 A y de corriente de inserción de 10 A. Los
módulos son totalmente de estado sólido y están encapsulados para
proteger el sistema de circuitos electrónico.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de salida se
energiza. El retardo de tiempo se activa cuando se abre el interruptor
de inicio. El relevador de salida permanece energizado durante la
temporización. Cuando finaliza el retardo de tiempo, el relevador de
salida se desenergiza. El relevador de salida se energiza si el interruptor
de inicio está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: cuando se cierra nuevamente el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 5 %
Corriente uniforme de 1 A,
relevador de salida de estado
sólido con corriente de
inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Diseño compacto y de
bajo costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Diagrama de conexiones
V = Voltaje
UTL = Carga opcional no
medida
L = Carga
S1 = Conmutador de inicio
RT se incluye cuando se pide
un ajuste externo.
L1 N/L2
(Positive Switching)
(Negative Switching)
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
MODO DE
CONMUTACIÓN MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
MODO DE
CONMUTACIÓN
KSDB1110MP 12 V CC Fijo 10 m Positiva KSDB314SP 24 V CC Fijo 4 s Positiva
KSDB1115SP 12 V CC Fijo 15 s Positiva KSDB315SP 24 V CC Fijo 5 s Positiva
KSDB1120SP 12 V CC Fijo 20 s Positiva KSDB324N 24 V CC Externo 1-100 min Negativa
KSDB113MP 12 V CC Fijo 3 m Positiva KSDB330N 24 V CC Integrado 0,1-10 s Negativa
KSDB113SP 12 V CC Fijo 3 s Positiva KSDB4120M 120 V CA Fijo 20 m N/A
KSDB120P 12 V CC Externo 0,1-10 s Positiva KSDB4160S 120 V CA Fijo 60 s N/A
KSDB134P 12 V CC Integrado 1-100 min Positiva KSDB4190M 120 V CA Fijo 90 m N/A
KSDB2115S 24 V CA Fijo 15 s N/A KSDB431 120 V CA Integrado 1-100 s N/A
KSDB220 24 V CA Externo 0,1-10 s N/A KSDB61150S 230 V CA Fijo 150 s N/A
KSDB231 24 V CA Integrado 1-100 s N/A KSDB631 230 V CA Integrado 1-100 s N/A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
(Conmutación positiva)
(Conmutación negativa)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
322 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/ksdb
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16), P1015-14 (AWG 18/22)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
SERIE KSDB
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 12, 24 o 120 V CC; 24, 120, o 230 V CA
Tolerancia ± 20 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Frecuencia de línea de CA/
Voltaje de onda de CC 50/60 Hz/≤ 10 %
Salida
Tipo Estado sólido
Forma NO, cerrado antes y durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de filtración
de estado INACTIVO CA≅ 5 mA a 230 V CA; CC ≅ 1 mA
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Funcionamiento CC Conmutación negativa o positiva
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 2000 V en terminales para montaje en
superficie
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 80 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando la
resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango de
tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un RT de
1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 323
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/orb
SERIE ORB
Descripción
La construcción PCB abierta de la Serie ORB ofrece al usuario economía
sin sacrificar el rendimiento y la fiablidad. El relevador de salida está
disponible en estructuras DPDT o SPDT aisladas de 10 A. El retardo
de tiempo puede clasificarse como fijo desde fábrica, perilla integrada
o ajuste externo. Todas las conexiones miden 6,35 mm (0,25 pulg.) de
conector rápido macho.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de salida se
energiza. El retardo de tiempo comienza al abrir el interruptor de inicio
(límite de cierre accionado). El relevador de salida permanece energizado
durante la temporización. Cuando finaliza el retardo de tiempo, el
relevador de salida se desenergiza. El relevador de salida se energizará
si el interruptor de inicio está cerrado en el momento de aplicarse el
voltaje de entrada.
Restablecimiento: cuando se cierra nuevamente el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Construcción PCB abierta Reduce los costos en aplicaciones para fabricantes
originales
Sistema de circuitos
analógico
Exactitud de repetición +/ - 2 %,
Calibración de fábrica +/ - 10 %
Contactos de salida SPDT o
DPDT aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Iniciación de voltaje de línea No se requiere de un control de voltaje por separado para
su funcionamiento
Accesorios
P1004-12, P1004-12-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para utilizar
con todos los módulos con terminales de conector
rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
L1 N/L2 L1 N/L2
SPDT DPDT
V = Voltaje
S1 = Conmutador de
inicio
Los contactos del
relevador están aislados.
RT se incluye cuando se
pide un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO
DE TIEMPO
ESTRUCTURA
DE SALIDA
ORB120A160 120 V CA Fijo 60 s SPDT
ORB120A25 120 V CA Integrado 3-300 s SPDT
ORB24A11D 24 V CA Fijo 1 s DPDT
ORB24A21D 24 V CA Integrado 0,05-3 s DPDT
ORB24A25 24 V CA Integrado 3-300 s SPDT
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 26.
324 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/orb
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 0,05 s-300 s en 5 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) Ajustable: rango garantizado
Fijo ±10%
Tiempo de restablecimiento ≤ 50 ms
Tiempo de inicio ≤ 70 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia
24 V CA -15 %-20 %
120 y 230 V CA -20 %-10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía 2,25 W
Salida
Tipo Relevador electromecánico
Forma SPDT o DPDT, aislada
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1x107
; Eléctrica - 1 x 106
Protección
Voltaje de aislamiento ≥1500 V RMS entre terminales de entrada
y salida
Mecánica
Montaje Montaje en superficie con cuatro tornillos n.º 6
(M3,5 x 0,6)
Dimensiones H 53,8 mm (2,12"); A 93,7 mm (3,69");
P 47,8 mm (1,88")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 77 g (2,7 oz)
SERIE ORB
Guías de selección
,
, ,
,
,
,
,
,
,
,
,
,
,
,
,
, , ,
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
Megaohmios
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor normalmente
abierto
NC = Contactor normalmente
cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 325
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tdb-tdbh-tdbl
SERIE TDB/TDBH/TDBL
Descripción
La serie TDB combina un sistema de circuitos digital preciso con
contactos SPDT o DPDT aislados de 10 A en un paquete de conexión
de 8 u 11 pines. La serie TDB incluye retardos de tiempo seleccionables
por interruptor DIP que varían entre 0,1 y 10 230 s en 3 rangos. La
serie TDB es el producto ideal para paneles de control personalizados y
diseñadores de fabricantes originales.
Funcionamiento Retardo de apagado
El voltaje de entrada debe aplicarse en la entrada antes y durante la
temporización. Cuando se cierra el interruptor de inicio, el relevador
de salida se desenergiza. El retardo de tiempo comienza al abrir el
interruptor de inicio (límite de cierre accionado). El relevador de salida
permanece energizado durante la temporización. Cuando finaliza el
retardo de tiempo, el relevador de salida se desenergiza. El relevador
de salida se energizará si el interruptor de inicio está cerrado en el
momento de aplicarse el voltaje de entrada.
Restablecimiento: cuando se cierra de nuevo el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
3 rangos de tiempo
disponibles (0,1 s a 2,8 h) Versatilidad para utilizarse en la diversas aplicaciones
Basado en microcontrolador
Exactitud de repetición +/ - 0,1 % o 20 ms, lo que sea
mayor; exactitud de ajuste +/ - 2 % o 50 ms, lo que sea
mayor
Indicación LED
(ciertos modelos)
Proporciona indicaciones visuales sobre el estado del
relevador
Ajuste por interruptor DIP Brinda exactitud de ajuste del tiempo inicial
Contactos de salida aislados Permite controlar las cargas para voltajes de CA o CC
Salida de relevador, retardo de apagado
Diagrama de conexiones
L1 N/L2
L1 N/L2
SPDT OCTAL DE 8 PINES
S1 = Conmutador de inicio
Los contactos del relevador están
aislados
DPDT DE 11 PINES
*
* Modelos de 8 pines con clasificación UL
al utilizarse en conjunto con el conector
P1011-6 solamente.
Información para pedir
MODELO VOLTAJE DE ENTRADA RANGO DE RETARDO (SEGUNDOS) LED TIPO DE CONECTOR/ESTRUCTURA DE SALIDA
TDB120AL 120 V CA 1-1023 en incrementos de 1 s X Conector octal (8 pines), SPDT
TDB120ALD 120 V CA 1-1023 en incrementos de 1 s X Conector DPDT de 11 pines
TDB12D 12 V CC 1-1023 en incrementos de 1 s Conector octal (8 pines), SPDT
TDB230AL 230 V CA 1-1023 en incrementos de 1 s X Conector octal (8 pines), SPDT
TDB24AL 24 V CA 1-1023 en incrementos de 1 s X Conector octal (8 pines), SPDT
TDB24DL 24 V CC/28 V CC 1-1023 en incrementos de 1 s X Conector octal (8 pines), SPDT
TDBH120AL 120 V CA 10-10230 en incrementos de 10 s X Conector octal (8 pines), SPDT
TDBH120ALD 120 V CA 10-10230 en incrementos de 10 s X Conector DPDT de 11 pines
TDBL120AL 120 V CA 0,1-102,3 en incrementos de 0,1 s X Conector octal (8 pines), SPDT
TDBL120ALD 120 V CA 0,1-102,3 en incrementos de 0,1 s X Conector DPDT de 11 pines
TDBL24DL 24 V CC/28 V CC 0,1-102,3 en incrementos de 0,1 s X Conector octal (8 pines), SPDT
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
8 PINES
11 PINES
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 23.
326 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/tdb-tdbh-tdbl
SERIE TDB/TDBH/TDBL
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 300 V CA
Montaje de superficie con dos tornillos o anillos de
presión n.º 6 (M 3,5 x 0,6) en riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 11 pines y 35 mm.
Clasificación nominal 10 A a 300 V CA Montaje de
superficie con dos tornillos o anillos de presión n.º 6
(M 3,5 x 0,6) en riel DIN de 35 mm. Utilice abrazaderas
de presión PSC11.
Abrazaderas de presión PSC11 o PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilice la Serie PSC8 con conectores octales
NDS-8 o la Serie PSC11 con conectores NDS-11. Se
venden por pares.
Abrazaderas de presión PSCRB8
Diseñadas para utilizar con conector P1011-6. Se
instala firmemente en controles de conexión de
8 pines en cualquier posición y brinda protección
contra la vibración. Se venden por pares.
Conector octal P1011-6 para clasificación UL
Conector de montaje en superficie de 8 pines con
terminales de tornillo de fijación. Clasificación nominal
10 A a 600 V CA. Esta combinación cumple las
especificaciones UL al utilizarse con temporizadores
de la Serie TDB. Utilice las abrazaderas de presión
PSCRB8.
Funcionamiento por interruptor binario Digi-Set
APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3 S 544 S 3000 S
0,1…102,3 1…1023 10…10.230
1
2
4
8
16
32
64
128
256
512
10
20
40
80
160
320
640
1280
2560
5120
**Para aplicaciones con certificación CE, la alimentación eléctrica debe ser
aislada de la unidad en el momento de cambiar la posición del interruptor.
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango** 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
10-10 230 s en incrementos de 10 s
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Exactitud del ajuste ± 2 % o 50 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 50 ms
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ± 5 %
Indicador Los LED indican si el relevador está
energizado
Tiempo de inicio ≤ 60 ms
Entrada
Voltaje 12, 24/28, o 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110-230 V CA/CC -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 3,25 W
Salida
Tipo Relevador electromecánico
Forma SPDT o DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Conexión por puerto
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,4");
P 45,2 mm (1,8")
Terminación Conector octal de 8 u 11 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 327
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tdub
SERIE TDUB
L1 N/L2
Descripción
La serie TDUB combina sistemas de circuitos de temporización digitales
con funcionamiento de voltaje universal. Los voltajes de 24-240 V CA
y 12-24 V CC están disponibles en 3 rangos. La serie TDUB incluye
retardos de tiempo seleccionables por interruptor DIP que varían entre
0,1 y 102,3 min en 3 rangos. Su relevador de salida nominal de 1 A,
con capacidad para operar en múltiples voltajes, y un amplio rango de
retardos de tiempo seleccionables por interruptor hacen de la Serie
TDUB una excelente opción para sistemas de control de procesos y
equipo de fabricantes originales.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de se energiza.
El retardo de tiempo comienza al abrir el interruptor de inicio (límite de
cierre accionado). El relevador de salida permanece energizado durante
la temporización. Cuando finaliza el retardo de tiempo, el relevador de
salida se desenergiza. El relevador de salida se energizará si el interruptor
de inicio está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: cuando se cierra nuevamente el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Ajuste de temporización por
interruptor DIP Proporciona una exactitud de ajuste de +/-2 %
Retardo de tiempo
Seleccionable por el usuario
Las configuraciones del temporizador son seleccionables
por interruptor de 0,1 s a 102,3 min en 3 rangos para mayor
flexibilidad
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
No tiene piezas móviles para evitar arcos eléctricos y
deterioro con el paso del tiempo, y está encapsulado para
proteger contra impactos, vibración y humedad.
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagrama de conexiones
V = Voltaje
UTL = Carga opcional no medida
S1 = Conmutador de inicio
L = Carga medida
Temporizador de retardo de apagado
Información para pedir
MODELO RANGO DE VOLTAJE DE ENTRADA RANGO DE TIEMPO
TDUB3000A 24-120 V CA 1-1023 s
TDUB3002A 12-24 V CC 1-1023 s
TDUBH3002A 12-24 V CC 0,1-102,3 m
TDUBH3001A 100-240 V CA 0,1-102,3 m
TDUBL3002A 12-24 V CC 0,1-102,3 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
328 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/tdub
Especificaciones
Retardo de tiempo
Rango* 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
0,1-102,3 min en incrementos de 0,1 m
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Exactitud del ajuste ≤ ± 2 % o 20 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ±5%
Entrada
Voltaje/Tolerancia 24-240 V CA, 12-24 V CC /± 20 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Salida
Tipo Estado sólido
Forma NO, cerrado antes y durante la temporización
Clasificación nominal Corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Corriente de filtración
de estado inactivo CA ≅ 5 mA a 230 V CA; CC ≅ 1 mA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
*Para aplicaciones con certificación CE, la alimentación eléctrica debe seraislada de la unidad en el momento
de cambiar la posición del interruptor.
SERIE TDUB
Añade el valor de los interruptores en la posición
de encendido para el retardo de tiempo total.
Funcionamiento por interruptor de ajuste
Funcionamiento por interruptor de ajuste
RETARDO DE TIEMPO
APAGAR ENCENDIDO APAGAR ENCENDIDO
, ,
,
,
,
,
,
,
,
,
,
,
,
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 329
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/thdb
SERIE THDB
Descripción
La serie THDB combina sistemas de circuitos de temporización precisos
con conmutación de estado sólido de alta potencia. Puede conmutar
motores, luces y calentadores directamente sin un contactor. Puede
reducir los costos por componente y mano de obra, y aumentar la
fiabilidad con estos temporizadores pequeños y fáciles de utilizar.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de se energiza. El
retardo de tiempo se activa cuando se abre el interruptor de inicio. El
relevador de salida permanece energizado durante la temporización.
Cuando finaliza el retardo de tiempo, el relevador de salida se
desenergiza. El relevador de salida se energiza si el interruptor de inicio
está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: cuando se cierra nuevamente el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 1 %
Corrientes de carga altas
hasta de 20 A y de 200 A en
corriente de inserción
Permite un funcionamiento directo de motores, luces y
calentadores sin un contactor
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Superficie de montaje
metalizada
Facilita la transferencia de calor en aplicaciones de
corriente alta
Diseño compacto
y de bajo costo
Brinda flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano
de obra
Accesorios
P1004-95, P1004-95-X Versa-Pot
Montable en panel, potenciómetro industrial
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
CLASIFICACIÓN
NOMINAL DE
SALIDA
THDB421A 120 V CA Externo 1-100 s 6 A
THDB434C 120 V CA Integrado 1-100 min 20 A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
UTL = Carga opcional
no medida
L = Carga medida
S1 = Conmutador de inicio
RT se incluye cuando se
pide un ajuste externo.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
330 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/thdb
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, cerrado antes y durante la temporización
Corriente de carga máxima Salida Corriente Corriente
uniforme de inserción**
A 6 A 60 A
B 10 A 100 A
C 20 A 200 A
Caída de voltaje ≅ 2,5 V a corriente nominal
Corriente de filtración
de estado Inactivo ≅ 5 mA a 230 V CA
Corriente de carga mínima 100 mA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje ** Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
**Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto que se incluye. La
temperatura máxima en la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
SERIE THDB
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 331
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/trb
SERIE TRB
Descripción
La serie TRB combina una salida de relevador electromecánico aislado
de 10 A con un sistema de circuitos de temporización analógico. Las
activaciones falsas del TRB por rápidos transitorios eléctricos son poco
probables debido al aislamiento completo del circuito de la línea antes
su ejecución. El contacto de inicio es común para un lado de la línea
y puede ser utilizado para operar otras cargas. Su instalación es fácil
gracias a las conexiones principales del TRB de 8 u 11 pines estándar de
la industria.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de salida se
energiza. El retardo de tiempo comienza al abrir el interruptor de inicio
(límite de cierre accionado). El relevador de salida permanece energizado
durante la temporización. Cuando finaliza el retardo de tiempo, el
relevador de salida se desenergiza. El relevador de salida se energizará
si el interruptor de inicio está cerrado en el momento de aplicarse el
voltaje de entrada.
Restablecimiento: cuando se cierra nuevamente el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Aislamiento total del circuito
con respecto a la línea
Sin activaciones falsas debido a rápidos transitorios
eléctricos
Conexión de 8 u
11 pines estándar de la
industria
Permite una fácil instalación y reemplazo en el campo
Contactos de salida SPDT o
DPDT aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Sistema de circuitos
analógico Exactitud de repetición +/ - 2 %
Accesorios
P1004-XX, P1004-XX-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
Diagrama de conexiones
L1 N/L2
L1 N/L2
L1 N/L2
SPDT octal de 8 pines
SPDT de 11 pines
DPDT de 11 pines
V = Voltaje
S1 = Conmutador de inicio
Los contactos del relevador
están aislados.
RT se incluye cuando se pide
un ajuste externo.
*
* Modelos de 8 pines con clasificación UL
al utilizarse en conjunto con el conector
P1011-6 solamente.
8 PINES
11 PINES
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE ESTRUCTURA DE SALIDA TOLERANCIA DE
TIEMPO
RETARDO DE
TIEMPO
TRB120A2Y30 120 V CA Integrado Octal, SPDT (CA únicamente) +/ - 10 % 1-30 s
TRB120A3X600 120 V CA Perno de bloqueo Octal, SPDT (CA únicamente) +/ - 20 % 7-600 s
TRB120A4Y120 120 V CA Integrado DPDT de 11 pines +/ - 10 % 2-120 s
TRB24D10Y10 24 V CC/28 V CC Fijo DPDT de 11 pines +/ - 10 % 10 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 24.
332 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/trb
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje en superficie con dos tornillos o
anillos de presión n.º 6 en un riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 11 pines y 35 mm.
Montaje en superficie con dos tornillos o anillos
de presión n.º 6 en un riel DIN de 35 mm. Utilice
abrazaderas de presión PSC11.
Conector octal P1011-6 para clasificación UL*
Conector de montaje en superficie de 8 pines con
terminales de tornillo de fijación. Clasificación nominal
10 A a 600 V CA.
Guías de selección
RT externo Tabla de selección de
número de parte
VALOR NÚMERO DE PARTE
1 MΩ
1,5 MΩ
2 MΩ
3 MΩ
5 MΩ
1 MΩ
1,5 MΩ
2 MΩ
3 MΩ
5 MΩ
P1004-16
P1004-15
P1004-14
P1004-12
P1004-13
P1004-16-X
P1004-15-X
P1004-14-X
P1004-12-X
P1004-13-X
Segundos
Rango
Megaohmios
Retardo de tiempo*
* Cuando seleccione un RT externo,
agregue al menos 15 a 30 % de
tolerancia para la unidad y el RT.
Gráfico de selección de RT
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
SERIE TRB
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 50 ms-10 min en 15 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia de tiempo fija
y exactitud de ajuste ± 5, 10 o 20 %
Tiempo de inicio ≤ 70 ms
Tiempo de restablecimiento ≤ 75 ms
Tiempo de recirculación ≤ 250 ms
Retardo de tiempo vs.
temperatura y voltaje ≤± 10 %
Entrada
Voltaje 24/28 o 110 V CC; 24, 120 o 230 V CA
(Voltajes de CC en modelos de salida DPDT
únicamente)
Tolerancia
24 V CC/CA -15 % - 20 %
10-230 V CA/CC -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 3,25 W
Salida
Tipo Relevador electromecánico
Forma SPDT o DPDT, aislada
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Resistencia de aislamiento ≥ 100 MΩ
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Conexión por puerto
Dimensiones H 91,6 mm (3,62"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 u 11 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 333
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tsb
SERIE TSB
Descripción
La serie TSB es un módulo de temporización de retardo de apagado de
estado sólido. La serie TSB está disponible con un retardo de tiempo
ajustable fijo, externo o integrado. Los retardos de tiempo entre 0,05
y 600 s, en 4 rangos estándares, cubren cerca del 90 % de todas
las aplicaciones de temporización para dispositivos comerciales y de
fabricantes originales. La precisión de repetición es de ± 2 % Voltajes
de funcionamiento de 24, 120 o 230 V CA disponibles. El relevador de
corriente uniforme de 1 A del TSB, nominal de 10 A, y salida de estado
sólido es una combinación perfecta para el control directo de solenoides,
contactos, relevadores, luces, alarmas, y calentadores pequeños. La
serie TSB puede ser montada en superficie con un solo tornillo, o fijada
en un riel DIN de 35 mm utilizando el adaptador P1023-20.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, el relevador de salida se
energiza. El retardo de tiempo comienza al abrir el interruptor de inicio.
El relevador de salida permanece energizado durante la temporización.
Cuando finaliza el retardo de tiempo, el relevador de salida se
desenergiza. El relevador de salida se energizará si el interruptor de
inicio está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: cuando se cierra nuevamente el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
analógico
Exactitud de repetición +/ - 2 %,
Calibración de fábrica +/ - 5 %
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Amplio rango de retardo de
tiempo
Compatible con la mayoría de aplicaciones de
temporización para dispositivos comerciales y de
fabricantes originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
TSB2190 24 V CA Fijo 90 s TSB434 120 V CA Integrado 5-600 s
TSB222 24 V CA Externo 0,5-60 s TSB632 230 V CA Integrado 0,5-60 s
TSB41300 120 V CA Fijo 300 s TSB634 230 V CA Integrado 5-600 s
TSB422 120 V CA Externo 0,5-60 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
V = Voltaje
S1 = Conmutador de inicio
UTL = Carga opcional no
medida
L = Carga
RT se incluye cuando se pide
un ajuste externo.
L1 N/L2
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
334 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/tsb
Accesorios
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Guía de selección
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
, ,
,
,
,
,
,
,
,
,
,
,
Kohmios
* Cuando seleccione un RT externo, agregue al
menos 20% de tolerancia para la unidad y el RT.
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
SERIE TSB
Especificaciones
Retardo de tiempo
Rango 0,05 s-600 s en 4 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Tiempo de restablecimiento ≤ 150 ms
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, cerrado antes y durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de filtración
de estado inactivo ≅ 5 mA a 230 V CA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 335
Relevadores de retardo de tiempo
Dedicado — Retardo de apagado Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tsdb
SERIE TSDB
Descripción
La serie TSDB está diseñada para aplicaciones industriales y comerciales
más exigentes donde se requiere de un mayor rendimiento y tamaño
compacto. La calibración de fábrica para retardos de tiempo fijos
está dentro del 1 % del retardo de tiempo objetivo. La exactitud de
repetición, en condiciones estables, es del 0,5 % del retardo de tiempo.
La serie TSDB es apta para operar en un extenso rango de temperatura.
Retardos de tiempo de 0,1 s a 1000 min. El relevador de salida tiene
clasificación nominal uniforme de 1 A y de corriente de inserción
de 10 A. Los módulos son totalmente de estado sólido y están
encapsulados para proteger el sistema de circuitos electrónico.
Funcionamiento (Retardo de apagado)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Cuando se cierra el interruptor de inicio, la salida se energiza. El retardo
de tiempo se activa cuando se abre el interruptor de inicio. El relevador
de salida permanece energizado durante la temporización. Cuando
finaliza el retardo de tiempo, el relevador de salida se desenergiza. El
relevador de salida se energizará si el interruptor de inicio está cerrado
en el momento de aplicarse el voltaje de entrada.
Restablecimiento: cuando se cierra nuevamente el interruptor de inicio
durante la temporización, se restablece el retardo de tiempo. La pérdida
de voltaje de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 1 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Corriente uniforme de 1 A,
relevador de salida de estado
sólido con corriente de
inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Amplio rango de
temperatura: -40 °C a 75 °C
Fiable en aplicaciones industriales y
comerciales de alto rendimiento
Accesorios
P1004-13, P1004-13-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Diagrama de conexiones
V = Voltaje
UTL = Carga opcional no
medida
L = Carga medida
S1 = Conmutador de inicio
El RT se utiliza al
ordenar un ajuste externo.
L1 N/L2
(Positive Switching)
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
MODO DE
CONMUTACIÓN
TSDB320P 24 V CC Externo 0,1-10 s Positiva
TSDB421 120 V CA Externo 1-100 s N/A
TSDB431 120 V CA Integrado 1-100 s N/A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
(Conmutación positiva)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
336 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Retardo de apagado
www.littelfuse.com/tsdb
Accesorios
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
SERIE TSDB
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia ± 15 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Frecuencia de línea de CA/
Voltaje de onda de CC 50/60 Hz/≤ 10 %
Salida
Tipo Estado sólido
Forma NO, cerrado antes y durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de filtración
de estado inactivo ≅ 5 mA a 230 V CA; CC ≅ 1 mA
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Funcionamiento CC Conmutación negativa o positiva
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °F a 85 °F
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
t = Retardo de tiempo
incompleto
R = Restablecer
= Tiempo no definido
RETARDO DE APAGADO
(RETARDO DESACTIVADO)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 337
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hrds
SERIE HRDS
Temporizador de una sola activación
Diagrama de conexiones
Descripción
La serie HRDS combina una salida de relevador electromecánico con
un sistema de circuitos de temporización por microcontrolador. Ofrece
un funcionamiento de 12-230 V en cinco opciones y retardos de tiempo
ajustables fijos desde fábrica, integrados, o externos con una exactitud
de repetición de ± 0,5 %. La clasificación nominal del contacto de
salida permite un funcionamiento directo para cargas pesadas, tales
como compresores, bombas, motores de ventilador, calentadores, etc.
Esta serie es ideal para aplicaciones de fabricantes originales donde los
costos son un factor importante.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio, el relevador de salida
se energiza durante un intervalo de tiempo definido. Cuando finaliza el
retardo de tiempo, el relevador de salida se desenergiza. Abrir o volver
a cerrar el interruptor de inicio durante la temporización no afectará el
retardo de tiempo. El relevador de salida se energizará si el interruptor
de inicio está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Contactos de salida NO,
SPDT, aislados de 30 A
Permiten el funcionamiento directo para cargas pesadas:
compresores, bombas, motores de ventilador, calentadores.
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
NO = Normalmente abierta
S1 = Conmutador de inicio
L = Carga
C = Sonda común, contacto de
transferencia
NOTA: Se incluye una perilla,
o terminales 4 y 5, solo en las
unidades ajustables. RT se incluye
cuando se pide un ajuste externo.
Los contactos del relevador no
están aislados.
L1 N/L2
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
HRDS120 12 V CC Integrado 0,1-10 s
HRDS313M 24 V CC Fijo 3 m
HRDS321 24 V CC Integrado 1-100 s
HRDS421 120 V CA Integrado 1-100 s
HRDS430 120 V CA Externo 0,1-10 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 17.
338 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/hrds
SERIE HRDS
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 0,1 s-100 min en 5 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 1 %, ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ± 2 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC -15 % - 20 %
24-230 V CA -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía CA ≤ 4 VA; CC ≤ 2 W
Salida
Tipo Relevador electromecánico
Forma SPDT, no aislada
Clasificaciones nominales SPDT-NO SPDT-NC
Propósito general 125/240 V CA 30 A 15 A
Resistiva 125/240 V CA 30 A 15 A
28 V CC 20 A 10 A
Carga del motor 125 V CA 1 HP* 1/4 HP**
240 V CA 2 HP** 1 HP**
Duración Mecánica - 1 x 106
;
Eléctrica - 1 x 105
, *3 x104
, **6000
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 76,7 mm (3"); A 51,3 mm (2");
P 38,1 mm (1,5")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente
cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
y y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 339
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hspza22sl
HSPZA22SL
Descripción
La serie HSPZA22SL es un módulo programado desde fábrica disponible
en 13 funciones estándar. El HSPZA22SL ofrece un temporizador
ajustable por interruptor dual o funciones de contador. El ajuste por
interruptor permite una selección exacta del retardo de tiempo o el
número de conteos la primera y cada vez que se opera. El relevador
de salida de estado sólido con corriente uniforme de 1 A y corriente de
inserción de 10 A brinda 100 millones de operaciones típicas. Su circuito
de temporización por microcontrolador brinda una excelente estabilidad
y exactitud de repetición. Su encapsulación protege contra impactos,
vibración, y humedad. El HSPZA22SL es una opción económica para
aplicaciones de fabricantes originales que requieren tamaño compacto y
fiabilidad en estado sólido.
Funcionamiento (Bloqueo de una sola activación)
Cuando se aplica el voltaje de entrada y cerrar el S1 de forma parcial
o total, el relevador de salida se energiza y comienza el retardo de
tiempo TD1 de una sola activación. El relevador de salida se energiza al
finalizar el TD1 y se inicia el retardo de tiempo de bloqueo TD2. Durante
el cierre TD2 (y TD1) el interruptor S1 no tiene efecto alguno en el
funcionamiento. Luego de completarse el TD2, al cerrar S1 se comienza
otra funcionamiento. Si S1 se cierra al aplicar el voltaje de entrada, la
salida se energiza y comienza el retardo de tiempo TD1.
Restablecimiento: al aislar el voltaje de entrada se restablecen los
retardos de tiempo y la salida y el ciclo regresa al primer retardo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/- 0,1 %
Retardo de tiempo
Seleccionable por el usuario
Las configuraciones de temporización son seleccionables
por interruptor de 0,1 s a 1023 h en una función de
temporizador con interruptor dual para mayor flexibilidad.
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado sólido completo
y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
(Positive Switching)
(Negative Switching)
L1 N/L2
S1 = Conmutador de inicio
UTL = Carga opcional no medida
L = Carga
V = Voltaje
Diagrama de conexiones
(Conmutación positiva)
(Conmutación negativa)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 18.
340 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/hspza22sl
Ajuste de interruptor
APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO
RETARDO DE TIEMPO
0,1…102,3
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3 5 Retardo de 300 s 7 ciclos
Funcionamiento por interruptor de ajuste
RETARDO DE TIEMPO y CONTADOR
Diagramas de funciones
SINGLE SHOT / LOCKOUT V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 1-1023 s, minutos u horas en incrementos de
1 s, minutos u horas.
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Exactitud del ajuste ≤ ± 1 % o 20 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Rango de conteo 1-1023 en 2 rangos
Tasa de conteo ≤ 25 conteos por segundo
Entrada
Voltaje 24-240 V CA
Tolerancia ≤ ± 15 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Salida
Tipo Relevador de estado sólido
Clasificación nominal corriente uniforme de 1 A, corriente de
inserción de 10 A para 16 ms
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Corriente de filtración
de estado INACTIVO CA ≅ 5 mA a 240 V CA; CC ≅ 1 mA
Salida de contador Amplitud de pulsos de salida: 300 ms ± 20 %
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 76,2 mm (3"); A 50,8 mm (2");
P 38,1 mm (1,5")
Terminación Terminales de conector rápido macho 6,35 mm
(0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
HSPZA22SL
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD2 = Retardo de
tiempo
R = Restablecer
BLOQUEO/ACTIVACIÓN ÚNICOS
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 341
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayscontrols
SERIE KRDS
Activación única
Diagrama de conexiones
Descripción
La serie KRDS es un relevador de retardo de tiempo compacto cuya
medida es de 50,8 mm (2 in) cuadrados. Su circuito de temporización
por microcontrolador brinda una excelente estabilidad y exactitud de
repetición. Su encapsulación protege contra impactos, vibración, y
humedad. La serie KRDS es una opción económica para aplicaciones de
fabricantes originales que requieren aislamiento, fiabilidad, duración y
tamaño compacto.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio, el relevador de salida
se energiza durante un intervalo de tiempo definido. Cuando finaliza el
retardo de tiempo, el relevador de salida se desenergiza. Abrir o volver
a cerrar el interruptor de inicio durante la temporización no afectará el
retardo de tiempo. El relevador de salida se energizará si el interruptor
de inicio está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto y de bajo
costo que mide 50,8 mm
(2 in)
Brinda flexibilidad para aplicaciones de fabricantes
originales
Basado en microcontrolador Exactitud de repetición +/ -0,5 %,
Calibración de fábrica +/ - 5 %
Contactos de salida SPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
L1 N/L2 V = Voltaje
S1 = Conmutador de inicio
C = Sonda común, contacto de
transferencia
NO = Normalmente abierta
NC = Normalmente cerrada
UTL = Carga no medida
RT se incluye cuando se pide un ajuste
externo.
Incluye una perilla para unidades
ajustable. La carga no medida es
opcional. Los contactos del relevador
están aislados.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
KRDS1135M 12 V CC Fijo 35 m
KRDS120 12 V CC Integrado 0,1-10 s
KRDS221 24 V CA/CC Integrado 1-100 s
KRDS420 120 V CA Integrado 0,1-10 s
KRDS421 120 V CA Integrado 1-100 s
KRDS424 120 V CA Integrado 1-100 min
KRDS430 120 V CA Externo 0,1-10 s
Si el número de parte deseado no aparece en la lista, comuníquese con nosotros para considerar la fabricación
de la misma.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
342 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/krds
SERIE KRDS
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Corriente de salida/Temperatura ambiente
Especificaciones
Retardo de tiempo
Tipo Microcontrolador con sistema de circuitos
de vigilancia
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 40 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ± 5 %
Entrada
Voltaje 12, 24 o 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110 V CC, 120 V CA o 230 V CA -20 %- 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Contactos de relevador aislados
Forma SPDT
Clasificación nominal (a 40 °C) 10 A resistiva a 125 V CA;
5 A resistiva a 230 V CA y 28 V CC;
1/4 HP a 125 V CA
Duración (Operaciones) Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 343
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ksds
SERIE KSDS
Diagrama de conexiones
Descripción
La serie KSDS es ideal para aplicaciones que requieren de temporización
por intervalo de inicio parcial lo que incluye tiempo de exposición,
dispensación, o conformación de impulsos. Esta serie está disponible
en voltajes tanto CC como CA. Esta serie está diseñada para propósito
general en aplicaciones comerciales e industriales donde se requiere
un temporizador de estado sólido fiable, pequeño y económico. La
calibración de fábrica para retardos de tiempo fijos está dentro del
5 % del retardo de tiempo objetivo. La exactitud de repetición, en
condiciones estables, es del 0,5 % del retardo de tiempo seleccionado.
Retardos de tiempo de 0,1 s a 1000 minutos disponibles en 6 rangos.
El relevador de salida tiene clasificación nominal uniforme de 1 A y de
corriente de inserción de 10 A. Los módulos son totalmente de estado
sólido y están encapsulados para proteger el sistema de circuitos
electrónico.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio (circuito biestable
activado), el relevador de salida se energiza durante un intervalo de
tiempo definido. Cuando finaliza el retardo de tiempo, el relevador de
salida se desenergiza. Abrir o volver a cerrar el interruptor de inicio
durante la temporización no afectará el retardo de tiempo. El relevador
de salida se energizará si el interruptor de inicio está cerrado en el
momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 5 %
Corriente uniforme de 1 A,
relevador de salida de estado
sólido con corriente de
inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
V = Voltaje
UTL = Carga opcional no medida
L = Carga medida
S1 = Conmutador de inicio
RT se incluye cuando se pide un
ajuste externo.
L1 N/L2
(Positive Switching)
(Negative Switching)
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
MODO DE
CONMUTACIÓN
KSDS1115SP 12 V CC Fijo 15 s Positiva
KSDS230 24 V CA Integrado 0,1-10 s N/A
KSDS320P 24 V CA Externo 0,1-10 s Positiva
KSDS415M 120 V CA Fijo 5 m N/A
KSDS420 120 V CA Externo 0,1-10 s N/A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
(Conmutación positiva)
(Conmutación negativa)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
344 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/ksds
SERIE KSDS
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea de CA/
Voltaje de onda de CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de filtración
de estado INACTIVO CA ≅ 5 mA a 230 V CA; CC ≅ 1 mA
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Funcionamiento CC Conmutación negativa o positiva
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor normalmente
abierto
NC = Contactor normalmente
cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 345
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ors
SERIE ORS
Diagrama de conexiones
Descripción
La construcción PCB abierta de la Serie ORS ofrece al usuario economía
sin sacrificar el rendimiento y la fiablidad. El relevador de salida está
disponible en estructuras DPDT o SPDT aisladas de 10 A. El retardo
de tiempo puede clasificarse como fijo desde fábrica, perilla integrada
o ajuste externo. Todas las conexiones miden 6,35 mm (0,25 in) de
conector rápido macho.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio (circuito biestable
activado), el relevador de salida se energiza durante un intervalo de
tiempo definido. Cuando finaliza el retardo de tiempo, el relevador de
salida se desenergiza. Abrir o volver a cerrar el interruptor de inicio
durante la temporización no afectará el retardo de tiempo. El relevador
de salida se energizará si el interruptor de inicio está cerrado en el
momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Construcción PCB abierta Se reducen los costos sin sacrificar el rendimiento
y la fiabilidad
Sistema de circuitos
analógico
Exactitud de repetición +/ - 2 %,
Calibración de fábrica +/ - 10 %
Contactos de salida SPDT o
DPDT aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Iniciación de voltaje de línea No se requiere de un control de voltaje por separado para
su funcionamiento
Accesorios
P1004-12, P1004-12-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
L1 N/L2 L1 N/L2
SPDT DPDT
V = Voltaje
S1 = Conmutador de
inicio
Los contactos del
relevador están
aislados.
RT se incluye cuando
se pide un ajuste
externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
ESTRUCTURA
DE SALIDA
ORS120A150SD 120 V CA Fijo 50 s DPDT
ORS230A150SD 230 V CA Fijo 50 s DPDT
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 26.
346 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/ors
SERIE ORS
Guía de selección
,
, ,
,
,
,
,
,
,
,
,
,
,
,
,
, , ,
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
Megaohmios
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 0,05 s-300 s en 5 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) Ajustable: rango garantizado
Fijo ±10%
Tiempo de restablecimiento ≤ 50 ms
Tiempo de inicio ≤ 70 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia
24 V CA -15 % - 20 %
120 y 230 V CA -20 %-10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía 2,25 W
Salida
Tipo Relevador electromecánico
Forma SPDT o DPDT, aislada
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1x107
; Eléctrica - 1 x 106
Protección
Voltaje de aislamiento ≥1500 V RMS entre terminales de entrada
y salida
Mecánica
Montaje Montaje en superficie con cuatro tornillos n.º 6
(M3.5 x 0.6)
Dimensiones H 53,8 mm (2,12"); A 93,7 mm (3,69");
P 47,8 mm (1,88")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 77 g (2,7 oz)
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 347
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/prs65
PRS65
Temporizador de una sola activación
Diagrama de conexiones
Descripción
El PRS65 es un relevador de retardo de tiempo de una sola activación
para utilizar en aplicaciones de temporización no críticas. El retardo de
tiempo ajustable por perilla integra un rango de tiempo garantizado
hasta de 8 minutos.
Funcionamiento
La alimentación debe asignarse en la entrada en todo momento antes y
durante la temporización. Cuando se cierra el interruptor de inicio (parcial
o totalmente), los contactos de salida transfieren energía y se inicia el
retardo de tiempo. Al finalizar el intervalo de retardo, los contactos de
salida regresan a su posición inicial. Si el interruptor de inicio se vuelve a
cerrar durante la temporización, el retardo de tiempo no se verá afectado.
Características y beneficios
J Sistema de circuitos electrónico con relevador electromecánico
J Voltajes de funcionamiento comunes
J Conector octal
J Abrazaderas de presión disponibles
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje de superficie con dos tornillos o
anillos de presión n.º 6 (M 3.5 x 0.6) en riel DIN de
35 mm. Utilice abrazaderas de presión PSC8.
3
INITIATE
INPUT
VOLTAGE
OCTAL, SPDT
4 5
6
7
1 8
2
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 7-480 s
Exactitud de repetición ± 2 % bajo condiciones fijas
Tolerancia Ajustable por perilla: rango garantizado
Tiempo de restablecimiento 80 ms máx.
Tiempo de recirculación
Luego de la temporización 16 ms máx.
Durante la temporización 0,1 % del nivel máximo máximo o 75 ms,
lo que sea mayor
Retardo de tiempo vs.
temperatura y voltaje 15 % máx.
Entrada
Voltaje 230 V CA, nominal
Tolerancia ± 15 % del valor nominal
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Relevador
Forma Polaridad única, doble vía
Clasificación nominal 10 amperios resistiva a 240 V CA
Protección
Rápidos transitorios eléctricos ± 1500 voltios para 150 microsegundos
Voltaje disruptivo dieléctrico ≥ 1500 V RMS mín. a 60 Hz entre terminales
de entrada y salida
Mecánica
Montaje Conexión directa (o abrazaderas de presión
para montaje en panel)
Terminación Conexión octal estándar
Dimensiones H 92,2 mm (3,63"); A 60,45 mm (2,38");
P 44,45 mm (1,75")
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso aproximadamente 170 g (6 oz)
8 PINES
OCTAL, SPDT
VOLTAJE
DE ENTRADA
INICIAR
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 515, Figura 48.
348 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/tds-tdsh-tdsl
SERIES TDS/TDSH/TDSL
Salida de relevador, relevador de retardo de
tiempo de una sola activación
Diagrama de conexiones
Descripción
La serie TDS combina un sistema de circuitos digital preciso con
contactos SPDT o DPDT aislados de 10 A en un paquete de conexión
de 8 u 11 pines. La serie TDS incluye retardos de tiempo seleccionables
por interruptor DIP que varían entre 0,1 y 10 230 s en 3 rangos. La
serie TDS es el producto ideal para paneles de control personalizados y
diseñadores de fabricantes originales.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse a la entrada antes y durante la
temporización. Con el cierre parcial o total del interruptor de inicio
(circuito biestable activado), el relevador de salida se energiza durante
un intervalo de tiempo definido. Cuando finaliza el retardo de tiempo, el
relevador de salida se desenergiza. Abrir o volver a cerrar el interruptor
de inicio durante la temporización no afectará el retardo de tiempo. El
relevador de salida se energizará si el interruptor de inicio está cerrado
en el momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
3 rangos de tiempo
disponibles (0,1 s-2,8 h) Versatilidad para utilizarse en la diversas aplicaciones
Basado en microcontrolador
Exactitud de repetición +/ - 0,1 % o 20 ms, lo que sea
mayor; exactitud de ajuste +/ - 2 % o 50 ms, lo que sea
mayor
Indicación LED
(ciertos modelos)
Proporciona indicaciones visuales sobre el estado del
relevador
Ajuste de interruptor DIP Brinda exactitud de ajuste del tiempo inicial
Contactos de salida aislados Permite controlar las cargas para voltajes de CA o CC
L1 N/L2
L1 N/L2
SPDT OCTAL DE 8 PINES
DPDT DE 11 PINES
S1 = Conmutador de inicio
Los contactos del relevador están
aislados.
*
* Modelos de 8 pines con clasificación UL
al utilizarse en conjunto con el conector
P1011-6 solamente.
Información para pedir
MODELO VOLTAJE DE ENTRADA RANGO DE RETARDO (SEGUNDOS) LED TIPO DE CONECTOR/ESTRUCTURA DE SALIDA
TDS120AL 120 V CA 1-1023 en incrementos de 1 s X Conector octal (8 pines), SPDT
TDS120ALD 120 V CA 1-1023 en incrementos de 1 s X Conector DPDT de 11 pines
TDS12D 12 V CC 1-1023 en incrementos de 1 s Conector octal (8 pines), SPDT
TDS230AL 230 V CA 1-1023 en incrementos de 1 s X Conector octal (8 pines), SPDT
TDS24AL 24 V CA 1-1023 en incrementos de 1 s X Conector octal (8 pines), SPDT
TDSH120AL 120 V CA 10-10230 en incrementos de 10 s X Conector octal (8 pines), SPDT
TDSL120AL 120 V CA 0,1-102,3 en incrementos de 0,1 s X Conector octal (8 pines), SPDT
TDSL12D 12 V CC 0,1-102,3 en incrementos de 0,1 s Conector octal (8 pines), SPDT
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
8 PINES
11 PINES
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 23.
©2018 Controladores y Relevadores de Protección de Littelfuse 349
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tds-tdsh-tds
SERIES TDS/TDSH/TDSL
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
parpadeantes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 300 V CA
Montaje de superficie con dos tornillos o anillos de
presión n.º 6 (M 3.5 x 0.6) en riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 11 pines y 35 mm.
Clasificación nominal 10 A a 300 V CA Montaje de
superficie con dos tornillos o anillos de presión n.º 6
(M 3.5 x 0.6) en riel DIN de 35 mm. Utilice abrazaderas
de presión PSC11.
Abrazaderas de presión PSC11 o PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilice la Serie PSC8 con conectores octales
NDS-8 o la Serie PSC11 con conectores NDS-11.
Se venden por pares.
Abrazaderas de presión PSCRB8
Diseñadas para utilizar con conector P1011-6. Se
instala firmemente en controles de conexión de
8 pines en cualquier posición y brinda protección
contra la vibración. Se venden por pares.
Conector octal P1011-6 para clasificación UL*
Conector de montaje en superficie de 8 pines con
terminales de tornillo de fijación. Clasificación nominal
10 A a 600 V CA. Utiliza abrazaderas de presión
PSCBR8.
* Modelos de 8 pines con clasificación UL al utilizarse en conjunto con el conector P1011-6 solamente.
Funcionamiento por interruptor binario Digi-Set
APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3 S 544 S 3000 S
0,1…102,3 1…1023 10…10.230
1
2
4
8
16
32
64
128
256
512
10
20
40
80
160
320
640
1280
2560
5120
** Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada de la unidad en el momento
de cambiar la posición del interruptor.
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango** 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
10-10 230 s en incrementos de 10 s
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Exactitud del ajuste ± 2 % o 50 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 50 ms
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ± 5 %
Indicador LED que se activa durante la temporización; el
relevador se energiza
Tiempo de inicio ≤ 60 ms
Entrada
Voltaje 12, 24/28, o 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110-230 V CA/CC -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 3,25 W
Salida
Tipo Relevador electromecánico
Forma SPDT o DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y
salida
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Conexión por puerto
Terminación Conector octal de 8 u 11 pines
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
12 RELEVADORES DE RETARDO DE TIEMPO
350 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/tdus
SERIE TDUS
L1 N/L2
Temporizador de una sola activación
Descripción
La serie TDUS combina sistemas de circuitos de temporización digitales
con funcionamiento de voltaje universal. Los voltajes de 24-240 V CA
y 12-24 V CC están disponibles en 3 rangos. La serie TDUS incluye
retardos de tiempo seleccionables por interruptor DIP que varían entre
0,1 s y 102,3 min en 3 rangos. Su relevador de salida nominal de 1 A ,
con capacidad para operar en múltiples voltajes, y un amplio rango de
retardos de tiempo seleccionables por interruptor hacen de la Serie
TDUS una excelente opción para sistemas de control de procesos y
equipo de fabricantes originales.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio (circuito biestable
activado), el relevador de salida se energiza durante un intervalo de
tiempo definido. Cuando finaliza el retardo de tiempo, el relevador de
salida se desenergiza. Abrir o volver a cerrar el interruptor de inicio
durante la temporización no afectará el retardo de tiempo. El relevador
de salida se energizará si el interruptor de inicio está cerrado en el
momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/- 0,1 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagrama de conexiones
V = Voltaje
UTL = Carga opcional no medida
S1 = Conmutador de inicio
L = Carga medida
Información para pedir
MODELO VOLTAJE DE ENTRADA RANGO DE TIEMPO
TDUS3000A 24-120 V CA 1-1023 s
TDUS3001A 100-240 V CA 1-1023 s
TDUS3002A 12-24 V CC 1-1023 s
TDUSH3001A 100-240 V CA 0,1-102,3 min
TDUSL3000A 24-120 V CA 0,1-102,3 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 351
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tdus
Especificaciones
Retardo de tiempo
Rango* 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
0,1-102,3 min en incrementos de 0,1 m
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Exactitud del ajuste ≤ ± 2 % o 20 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ±5%
Entrada
Voltaje/Tolerancia 24-240 V CA, 12-24 V CC /± 20 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Clasificación nominal Corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Corriente de filtración
de estado inactivo CA ≅ 5 mA a 230 V CA; CC ≅ 1 mA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
* Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada de la unidad en el momento
de cambiar la posición del interruptor.
SERIE TDUS
Funcionamiento por interruptor de ajuste
Funcionamiento por interruptor de ajuste
RETARDO DE TIEMPO
APAGAR ENCENDIDO APAGAR ENCENDIDO
, ,
,
,
,
,
,
,
,
,
,
,
,
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
12 RELEVADORES DE RETARDO DE TIEMPO
352 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/thc-ths
SERIE THC/THS
Diagrama de conexiones
Descripción
Las Series THC/THS son un relevador de estado sólido y temporizador
combinado en un control compacto y fácil de utilizar. Al ser instalados sobre
una superficie metálica, la Serie THC/THS puede utilizarse para controlar
directamente luces o cargas de calentador hasta de 20 A de corriente
uniforme, o 200 A de corriente de inserción. Su función de una sola
activación puede operar en operaciones de dispensación y conformación
de impulsos. El interruptor de inicio puede ser un tipo de interruptor parcial
o total. Los retardos de tiempo varían desde 0,1 s hasta 600 s en 4 rangos.
La serie THC/THS se utiliza para aplicaciones de dispensadoras de monedas
donde se requiere de una respuesta de ejecución rápida.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio (circuito biestable
activado), el relevador de salida se energiza durante un intervalo de
tiempo definido. Cuando finaliza el retardo de tiempo, el relevador de
salida se desenergiza. Abrir o volver a cerrar el interruptor de inicio
durante la temporización no afectará el retardo de tiempo. El relevador
de salida se energizará si el interruptor de inicio está cerrado en el
momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
analógico
Exactitud de repetición +/ - 2 %,
Calibración de fábrica +/ - 5 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes originales
y reduce los costos por componente y mano de obra
Corrientes de carga altas
hasta de 20 A de corriente
uniforme, y de 200 A en
corriente de inserción
Permite un funcionamiento directo de motores, luces y
calentadores sin necesidad de un contactor
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Superficie de montaje
metalizada
Facilita la transferencia de calor en aplicaciones de
corriente alta
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
L1 N/L2
V = Voltaje
S1 = Conmutador de inicio
L = Carga medida
UTL = Carga opcional
no medida
RT se incluye cuando se
pide un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
CLASIFICACIÓN
NOMINAL DE SALIDA
THC421C 120 V CA Externo 0,1-3 s 20 A
THS422B 120 V CA Externo 0,5-60 s 10 A
THS422C 120 V CA Externo 0,5-60 s 20 A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
©2018 Controladores y Relevadores de Protección de Littelfuse 353
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/thc-ths
SERIE THC/THS
Guía de selección
* Cuando seleccione un RT externo, agregue al
menos 20 % de tolerancia para la unidad y el RT.
Segundos
Retardo de tiempo*
Gráfico de selección de RT
Kohmios
, ,
,
,
,
,
,
,
,
,
,
,
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango 0,1-600 s en 4 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 15 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima Salida Corriente Corriente
uniforme de inserción**
A 6 A 60 A
B 10 A 100 A
C 20 A 200 A
Corriente de carga mínima 100 mA
Caída de voltaje ≅ 2,5 V a corriente nominal
Corriente de filtración
de estado INACTIVO ≅ 5 mA a 230 V CA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥100 MΩ
Mecánica
Montaje ** Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
**Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto que se incluye. La
temperatura máxima de la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
12 RELEVADORES DE RETARDO DE TIEMPO
354 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/thds
SERIE THDS
Diagrama de conexiones
Descripción
La serie THDS combina sistemas de circuitos de temporización precisos
con conmutación de estado sólido de alta potencia. Puede conmutar
motores, luces y calentadores directamente sin un contactor. Puede
reducir los costos por componente y mano de obra, y aumentar la
fiabilidad con estos temporizadores pequeños y fáciles de utilizar.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio, el relevador de salida
se energiza durante un intervalo de tiempo definido. Cuando finaliza el
retardo de tiempo, el relevador de salida se desenergiza. Abrir o volver
a cerrar el interruptor de inicio durante la temporización no afectará el
retardo de tiempo. El relevador de salida se energiza si el interruptor de
inicio está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 1 %
Corrientes de carga altas
hasta de 20 A y de 200 A en
corriente de inserción
Permite un funcionamiento directo de motores, luces y
calentadores sin un contactor
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Superficie de montaje
metalizada
Facilita la transferencia de calor en aplicaciones de
corriente alta
Diseño compacto y de
bajo costo
Brinda flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano
de obra
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
L1 N/L2
V = Voltaje
UTL = Carga opcional no
medida
L = Carga medida
S1 = Conmutador de inicio
RT se incluye cuando se pide
un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO
DE TIEMPO
CLASIFICACIÓN
NOMINAL DE SALIDA
THDS410.25SA 120 V CA Fijo 0,25 s 6 A
THDS431C 120 V CA Integrado 1-100 s 20 A
THDS610.25SA 230 V CA Fijo 0,25 s 6 A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
©2018 Controladores y Relevadores de Protección de Littelfuse 355
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/thds
SERIE THDS
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de restablecimiento ≤150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima Salida Corriente Corriente
uniforme de inserción**
A 6 A 60 A
B 10 A 100 A
C 20 A 200 A
Caída de voltaje ≅ 2,5 V a corriente nominal
Corriente de filtración
de estado Inactivo ≅ 5 mA a 230 V CA
Corriente de carga mínima 100 mA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje ** Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
** Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto que se incluye. La
temperatura máxima en la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
356 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/trs
SERIE TRS
Diagrama de conexiones
Descripción
La serie TRS combina una salida de relevador electromecánico aislado
de 10 A con un sistema de circuitos de temporización analógico. Las
activaciones falsas del TRS por rápidos transitorios eléctricos son poco
probables debido al aislamiento completo del circuito de la línea antes
su ejecución. El contacto de inicio es común para un lado de la línea
y puede ser utilizado para operar otras cargas. Su instalación es fácil
gracias a las conexiones principales del TRS de 8 u 11 pines estándar de
la industria.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse a la entrada antes y durante la
temporización. Con el cierre parcial o total del interruptor de inicio
(circuito biestable activado), el relevador de salida se energiza durante
un intervalo de tiempo definido. Cuando finaliza el retardo de tiempo, el
relevador de salida se desenergiza. Abrir o volver a cerrar el interruptor
de inicio durante la temporización no afectará el retardo de tiempo.
Cuando se aplica el voltaje de entrada con el interruptor de inicio
cerrado, se energizará la carga y se activa el retardo de tiempo.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Aislamiento total
del circuito con respecto a
la línea
Sin activaciones falsas debido a rápidos transitorios
eléctricos
Conexión por conector octal
estándar industrial Elimina la necesidad de utilizar conectores especiales
Contactos de salida SPDT o
DPDT aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Sistema de circuitos
analógico Exactitud de repetición +/ - 2 %
L1 N/L2
L1 N/L2
L1 N/L2
SPDT OCTAL DE 8 PINES
SPDT DE 11 PINES
DPDT DE 11 PINES
*
* Modelos de 8 pines con clasificación UL
al utilizarse en conjunto con el conector
P1011-6 solamente.
8 PINES
11 PINES
Información para pedir
MODELO VOLTAJE DE ENTRADA AJUSTE ESTRUCTURA DE SALIDA TOLERANCIA DE TIEMPO RETARDO DE TIEMPO
TRS120A2X30 120 V CA Perilla Octal, SPDT +/ - 20 % 1-30 s
TRS120A2X300 120 V CA Perilla Octal, SPDT (CA
únicamente) +/ - 20 % 7-300 s
TRS120A2Y10 120 V CA Perilla Octal, SPDT +/ - 10 % 0,1-10 s
120A2Y30 120 V CA Perilla Octal, SPDT +/ - 20 % 1-30 s
TRS24D7Z10 24 V CC/28 V CC Externo SPDT de 11 pines
sin potenciómetro +/ - 5 % 0,1-10 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 24.
©2018 Controladores y Relevadores de Protección de Littelfuse 357
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/trs
SERIE TRS
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje en superficie con dos tornillos o
anillos de presión n.º 6 en un riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 11 pines y 35 mm.
Montaje en superficie con dos tornillos o anillos
de presión n.º 6 en un riel DIN de 35 mm. Utilice
abrazaderas de presión PSC11.
Abrazaderas de presión PSC11 o PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilice la Serie PSC8 con conectores octales
NDS-8 o la Serie PSC11 con conectores NDS-11. Se
vende en juegos de dos unidades.
Conector octal P1011-6 para clasificación UL*
Conector de montaje en superficie de 8 pines con
terminales de tornillo de fijación. Clasificación nominal
10 A a 600 V CA.
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
* Modelos de 8 pines con clasificación UL al utilizarse en conjunto con el
conector P1011-6 solamente.
Guías de selección
Segundos
Rango
, ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Megaohmios
Retardo de tiempo*
* Cuando seleccione un RT externo,
agregue al menos 15 a 30 % de
tolerancia para la unidad y el RT.
RT externo Tabla de selección de Gráfico de selección de RT
número de parte
Valor Número de parte
1 MΩ
1,5 MΩ
2 MΩ
3 MΩ
5 MΩ
1 MΩ
1,5 MΩ
2 MΩ
3 MΩ
5 MΩ
P1004-16
P1004-15
P1004-14
P1004-12
P1004-13
P1004-16-X
P1004-15-X
P1004-14-X
P1004-12-X
P1004-13-X
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 0,05 s-10 min en 15 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia de tiempo fija y
exactitud de ajuste ± 5, 10, o 20 %
Tiempo de inicio ≤ 70 ms
Tiempo de restablecimiento ≤ 75 ms
Tiempo de recirculación ≤ 250 ms
Retardo de tiempo vs.
temperatura y voltaje ≤± 10 %
Entrada
Voltaje 24/28 o 110 V CC; 24, 120, o 230 V CA (el
voltaje CC solo aplica en modelos de salida
DPDT)
Tolerancia
24 V CC/CA -15 % - 20 %
110-230 V CA/CC -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 3,25 W
Salida
Tipo Relevador electromecánico
Forma SPDT o DPDT, aislada
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Resistencia de aislamiento ≥ 100 MΩ
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Conexión por puerto
Terminación Conector octal de 8 u 11 pines
Dimensiones H 91,6 mm (3,62"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 u 11 pines
Medioambiente
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
12 RELEVADORES DE RETARDO DE TIEMPO
358 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/tsds
SERIE TSDS
Diagrama de conexiones
Descripción
La serie TSDS está diseñada para aplicaciones industriales y comerciales
más exigentes donde se requiere de un mayor rendimiento y tamaño
compacto. La calibración de fábrica para retardos de tiempo fijos
está dentro del 1 % del retardo de tiempo objetivo. La exactitud
de repetición, en condiciones estables, es del 0,5 % del retardo de
tiempo. La serie TSDS es apta para operar en un extenso rango de
temperatura. Retardos de tiempo de 0,1 s a 1000 min. El relevador de
salida tiene clasificación nominal uniforme de 1 A y de corriente de
inserción de 10 A. Los módulos son totalmente de estado sólido y están
encapsulados para proteger el sistema de circuitos electrónico. Este
producto es ideal para diversas aplicaciones, incluida la dispensación,
soldadura, y temporización de exposición.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio, el relevador de salida
se energiza durante un intervalo de tiempo definido. Cuando finaliza el
retardo de tiempo, el relevador de salida se desenergiza. Abrir o volver
a cerrar el interruptor de inicio durante la temporización no afectará el
retardo de tiempo. El relevador de salida se energizará si el interruptor
de inicio está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto y de bajo
costo que mide 50,8 mm
(2 in)
Brinda flexibilidad para aplicaciones de fabricantes
originales
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 1 %
Corriente uniforme de 1 A,
relevador de salida de estado
sólido con corriente de
inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Amplio rango de
temperatura: -40 °C a 75 °C
Fiable en aplicaciones industriales y
comerciales de alto rendimiento
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
V = Voltaje
L = Carga medida
UTL = Carga opcional no medida
S1 = Conmutador de inicio
RT se incluye cuando se pide
un ajuste externo.
L1 N/L2
(Positive Switching)
(Negative Switching)
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
MODO DE
CONMUTACIÓN
TSDS2110S 24 V CA Fijo 10 s N/A
TSDS320N 24 V CC Externo 0,1-10 s Negativa
TSDS321P 24 V CC Externo 1-100 s Positiva
TSDS421 120 V CA Externo 1-100 s N/A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
(Conmutación positiva)
(Conmutación negativa)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 359
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tsds
SERIE TSDS
Accesorios
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia ± 15 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima corriente uniforme de 1 A,
corriente de inserción de 10 A a 60 °C
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Corriente de filtración
de estado inactivo CA ≅ 5 mA a 230 V CA; CC ≅ 1 mA
Funcionamiento CC Conmutación negativa o positiva
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
360 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Activación única
www.littelfuse.com/tss
SERIE TSS
Diagrama de conexiones
Descripción
La serie TSS es un módulo de temporización totalmente de estado
sólido. Si salida de estado sólido y corriente nominal de 1 A proporciona
un método excelente de control de tiempo para exposición,
dispensación, o para aumentar o disminuir un cierre de interruptor. Los
retardos de tiempo entre 0,05 y 600 s, en 4 rangos, cubren cerca del
90 % de todas las aplicaciones de fabricantes originales. La calibración
de fábrica de retardos fijos es de ± 5 % y la exactitud de repetición
es de ± 2 %. La serie TSS puede ser montada en superficie con un
solo tornillo, o fijada en un riel DIN de 35 mm utilizando el adaptador
accesorio P1023-20.
Funcionamiento (Activación única)
El voltaje debe aplicarse antes y durante la temporización. Con el cierre
parcial o total del interruptor de inicio, el relevador de salida se energiza
durante un intervalo de tiempo definido. Cuando finaliza el retardo de
tiempo, el relevador de salida se desenergiza. Abrir o volver a cerrar el
interruptor de inicio durante la temporización no afectará el retardo de
tiempo. El relevador de salida se energizará si el interruptor de inicio
está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
analógico
Exactitud de repetición +/ - 2 %,
Calibración de fábrica +/ - 5 %
Diseño compacto y de
bajo costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Montaje en riel DIN
o en superficie Brinda flexibilidad en la instalación
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
L1 N/L2
V = Voltaje
S1 = Conmutador de inicio
L = Carga medida
UTL = Carga opcional
no medida
RT se incluye cuando se pide
un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
TSS410.5 120 V CA Fijo 0,5 s
TSS421 120 V CA Externo 0,05-3 s
TSS422 120 V CA Externo 0,5-60 s
TSS424 120 V CA Externo 5-600 s
TSS622 230 V CA Externo 0,5-60 s
TSS624 230 V CA Externo 5-600 s
Si el número de parte deseado no aparece en la lista, comuníquese con nosotros para considerar la fabricación
de la misma.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 361
Relevadores de retardo de tiempo
Dedicado — Activación única Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tss
SERIE TSS
Accesorios
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Guía de selección
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
, ,
,
,
,
,
,
,
,
,
,
,
Kohmios
* Cuando seleccione un RT externo, agregue al
menos 20% de tolerancia para la unidad y el RT.
Diagrama de funciones
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango 0,05 s-600 s en 4 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima corriente uniforme de 1 A,
corriente de inserción de 10 A a 60 °C
Corriente de filtración
de estado Inactivo ≅ 5 mA a 230 V CA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
12 RELEVADORES DE RETARDO DE TIEMPO
362 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/erdi
SERIE ERDI
Descripción
Los econotemporizadores son una combinación de electrónicos digitales
y un relevador electromecánico. La salida de relevador DPDT para
circuitos lógica de relevador, y aislamiento de voltaje de entrada y salida.
Para aplicaciones tales como de intervalo, conformación de impulsos,
tiempo de ejecución mínimo, etc. La serie ERD viene encapsulada
para proteger los sistemas de circuitos contra impactos, vibración y
humedad.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo y el
relevador de salida se energiza. Cuando finaliza el retardo de tiempo, la
salida se desenergiza hasta que se aísle el voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Funcionamiento (Activación única)
El voltaje de entrada debe aplicarse antes y durante la temporización.
Con el cierre parcial o total del interruptor de inicio, el relevador de salida
se desenergiza durante el retardo de tiempo. Cuando finaliza el retardo
de tiempo, el relevador de salida se desenergiza. Abrir o volver a cerrar
el interruptor de inicio durante la temporización no afectará el retardo
de tiempo. El relevador de salida se energizará si el interruptor de inicio
está cerrado en el momento de aplicarse el voltaje de entrada.
Restablecimiento: el restablecimiento ocurre cuando se completa el
retardo de tiempo y se abre el interruptor de inicio. La pérdida de voltaje
de entrada restablece la salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos digital
integrado
Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 10 %
Contactos de salida DPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-16, P1004-16-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
ERDI436 120 V CA Externo 0,6-60 s
ERDI6210 230 V CA Integrado 1-100 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
Los terminales 2-3 y 7-6 son contactos normalmente abiertos (NO)
Los terminales 2-4 y 7-5 son contactos normalmente cerrados (NC)
L1 N/L2
L1 N/L2
INTERVALO ACTIVACIÓN ÚNICA
L1 N/L2
L1 N/L2
12 RELEVADORES DE RETARDO DE TIEMPOPara conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 25.
©2018 Controladores y Relevadores de Protección de Littelfuse 363
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/erdi
Guías de selección
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
Megaohmios
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
,
,
,
,
,
,
,
,
,
,
, , , , , ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Gráfico de selección de RT
Retardo de tiempo deseado*
Megaohmios
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
, ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Minutos
Diagramas de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango 0,1 s-500 min en 11 rangos ajustables o fijo
0,1 s-1000 min fijos
Ajuste Ajuste externo o integrado
Exactitud de repetición ± 0,5 %
Tolerancia
(Calibración de fábrica) ≤ ± 10 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 120 V CA o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
120 V CC/CA y 230 V CA -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Contactos de relevador aislados
Forma DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con dos tornillos n.º 6
(M3.5 x 0.6)
Dimensiones H 88,9 mm (3,5"); A63,5 mm (2,5");
P 43,2 mm (1,7")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 65 °C/-40 °C a 85 °C
Peso ≅ 162 g (5,7 oz)
SERIE ERDI
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
ACTIVACIÓN ÚNICA
(GENERADOR DE IMPULSOS)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no
definido
INTERVALO
(IMPULSOS ACTIVADOS)
12 RELEVADORES DE RETARDO DE TIEMPO
364 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/hrdi
SERIE HRDI
Descripción
La serie HRDI combina una salida de relevador electromecánico con
un sistema de circuitos de temporización por microcontrolador. Ofrece
un funcionamiento de 12-230 V en cinco rangos y retardos de tiempo
ajustables fijos desde fábrica, integrados, o externos con una exactitud
de repetición de ± 0,5 %. La clasificación nominal del contacto de
salida permite un funcionamiento directo para cargas pesadas, tales
como compresores, bombas, motores de ventilador, calentadores, etc.
Esta serie es ideal para aplicaciones de fabricantes originales donde los
costos son un factor importante.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. El
relevador de salida se energiza durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, la salida se desenergiza y permanece
desenergizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Contactos de salida NO,
SPDT, aislados de 30 A
Permiten el funcionamiento directo para cargas pesadas:
compresores, bombas, motores de ventilador, calentadores.
Encapsulado Protege contra impactos, vibración, y humedad.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
L1 N/L2
C = Sonda común, contacto
de transferencia
NO = Normalmente abierta
L = Carga
NOTA: Se incluye una perilla,
o terminales 4 y 5, solo en las
unidades ajustables. El RT
Tse
incluye al ordenar un ajuste
externo. Los contactos del
relevador no están aislados.
Temporizador de intervalo
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
HRDI117S 12 V CC Fijo 7 s
HRDI421 120 V CA Integrado 1-100 s
HRDI422 120 V CA Integrado 10-1000 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 17.
©2018 Controladores y Relevadores de Protección de Littelfuse 365
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hrdi
SERIE HRDI
Resistencia externa vs. Retardo de tiempo
Diagrama de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 0,1 s-100 min en 5 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 1 %, ± 5 %
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ± 2 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC -15 % - 20 %
24-230 V CA -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía CA ≤ 4 VA; CC ≤ 2 W
Salida
Tipo Relevador electromecánico
Forma SPDT, no aislada
Clasificaciones nominales SPDT-NO SPDT-NC
Propósito general 125/240 V CA 30 A 15 A
Resistiva 125/240 V CA 30 A 15 A
28 V CC 20 A 10 A
Carga del motor 125 V CA 1 HP* 1/4 HP**
240 V CA 2 HP** 1 HP**
Duración Mecánica - 1 x 106
;
Eléctrica - 1 x 105, *3 x 104, **6000
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 2000 V en terminales para montaje en
superficie
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 76,7 mm (3"); A 51,3 mm (2");
P 38,1 mm (1,5")
Terminación Terminales de conector rápido macho
(6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
INTERVALO
(IMPULSOS ACTIVADOS)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y
12 RELEVADORES DE RETARDO DE TIEMPO
366 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/krdi
SERIE KRDI
Descripción
La serie KRDI es un relevador de retardo de tiempo compacto cuya
medida es de 50,8 mm (2 in) cuadrados. Su circuito de temporización de
estado sólido brinda una excelente estabilidad y exactitud de repetición.
Su encapsulación protege contra impactos, vibración, y humedad. La
serie KRDI es una opción económica para aplicaciones de fabricantes
originales que requieren aislamiento, fiabilidad, duración y tamaño
compacto.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. El
relevador de salida se energiza durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, la salida se desenergiza y permanece
desenergizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto y de bajo
costo que mide 50,8 mm
(2 in)
Brinda flexibilidad para aplicaciones de fabricantes
originales
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 5 %
Contactos de salida SPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
KRDI120 12 V CC Perilla integrada 0,1-10 s
KRDI121 12 V CC Perilla integrada 1-100 s
KRDI122 12 V CC Perilla integrada 10-1000 s
KRDI2110S 24 V CA Fijo 10 s
KRDI2160S 24 V CA Fijo 60 s
KRDI220 24 V CC Perilla integrada 0,1-10 s
KRDI320 24 V CC Perilla integrada 0,1-10 s
KRDI420 120 V CA Perilla integrada 0,1-10 s
KRDI424 120 V CA Perilla integrada 1-100 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
C = Contactor de transferencia
común
NO = Normalmente abierta
NC = Normalmente cerrada
En las unidades ajustables se
incluye una perilla, o terminales
RT 4 y 5 para ajuste externo.
Consulte ajuste externo vs. gráfico
de retardo de tiempo
Los contactos del relevador están
aislados.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 367
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/krdi
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Especificaciones
Retardo de tiempo
Rango 0,1 s-100 min en 5 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ± 5 %
Entrada
Voltaje 12, 24 o 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110 V CC, 120 V CA o 230 V CA -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Contactos de relevador aislados
Forma SPDT
Clasificación nominal (a 40 °C) 10 A resistiva a 125 V CA;
5 A resistiva a 230 V CA y 28 V CC;
1/4 HP a 125 V CA
Máx. Voltaje de conmutación 250 V CA
Duración (Operaciones) Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
Resistencia externa
Corriente de salida/Temperatura ambiente
Diagrama de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE KRDI
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
INTERVALO
(IMPULSOS ACTIVADOS)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y
12 RELEVADORES DE RETARDO DE TIEMPO
368 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/ksd2
SERIE KSD2
L1 N/L2
Temporizador de intervalo
Descripción
La serie KSD2 está diseñada para propósito general en aplicaciones
comerciales e industriales donde se requiere de un temporizador de
estado sólido fiable, pequeño, y económico. La calibración de fábrica
para retardos de tiempo fijos está dentro del 5 % del retardo de tiempo
objetivo. La exactitud de repetición, en condiciones estables, es del
0,5 % del retardo de tiempo seleccionado. Esta serie está diseñada
para voltajes de entrada de 24, 120 o 230 V CA. Retardos de tiempo
de 0,1 s a 1000 minutos disponibles en 6 rangos. El relevador de
salida tiene clasificación nominal uniforme de 1 A y de corriente de
inserción de 10 A. Los módulos son totalmente de estado sólido y están
encapsulados para proteger el sistema de circuitos electrónico. Una
opción excelente para la mayoría de aplicaciones de conformación de
impulsos de fabricantes originales, tiempo de ejecución máximo, y otras
para control de procesos.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. El
relevador de salida se energiza durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, la salida se desenergiza y permanece
desenergizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
+/ -5 % de exactitud del retardo de tiempo
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, y corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Diagrama de conexiones
RT se incluye cuando se
pide un ajuste externo.
Información para pedir
MODELO VOLTAJE DE ENTRADA V CA AJUSTE RETARDO DE TIEMPO
KSD2221 24 Externo 1-100 s
KSD2413M 120 Fijo 3 m
KSD2420 120 Externo 0,1-10 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 369
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ksd2
Accesorios
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE KSD2
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ±10%
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima corriente uniforme de 1 A,
corriente de inserción de 10 A a 60 °C
Corriente de filtración
de estado INACTIVO ≅ 5 mA a 230 V CA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
INTERVALO
(IMPULSOS ACTIVADOS)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
370 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/kspu
SERIE KSPU
L1 N/L2
(Positive Switching)
(Negative Switching)
Descripción
La serie KSPU es un módulo programado desde fábrica disponible
en 14 funciones estándar. El KSPU ofrece un temporizador ajustable
individual o la función de contador. El ajuste por interruptor permite
una selección exacta del retardo de tiempo o el número de conteos
la primera y cada vez que se opera. El relevador de salida de estado
sólido con corriente uniforme de 1 A y corriente de inserción de 10 A
brinda 100 millones de operaciones típicas. Su circuito de temporización
por microcontrolador brinda una excelente estabilidad y exactitud de
repetición. Su encapsulación protege contra impactos, vibración, y
humedad. La serie KSPU es una opción económica para aplicaciones
de fabricantes originales que requieren tamaño compacto y fiabilidad en
estado sólido.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/- 0,1 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P1015-64 (AWG 14/16), P1015-14 (AWG 18/22)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagrama de conexiones
V = Voltaje
S1 = Conmutador de inicio
L = Carga
UTL = Carga no medida
Información para pedir
MODELO VOLTAJE DE ENTRADA RETARDO DE
TIEMPO/CONTEOS FUNCIONES
KSPUA2I 24-240 V CA 1-1023 s Intervalo
KSPUA8C 24-240 V CA
1-1023 conteos
(binario) con
salida pulsada
Contador con salida
pulsada
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
(Conmutación positiva)
(Conmutación negativa)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 371
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/kspu
Especificaciones
Retardo de tiempo
Rango* 0,1-102,3 s, minutos u horas en incrementos de
0,1 s, minutos u horas
1-1023 s, minutos u horas en incrementos de 1 s,
minutos u horas
1-63 s o minutos en incrementos de 1 s o minutos.
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Exactitud del ajuste ≤ ± 1 % o 20 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ±2%
Entrada
Voltaje/Tolerancia 24-240 V CA, 12-120 V CC/≤ ± 15 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Salida
Tipo Estado sólido
Forma NO, SPST-NO
Clasificación nominal corriente uniforme de 1 A,
corriente de inserción de 16 A
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Corriente de filtración
de estado inactivo CA ≅ 5 mA a 240 V CA; CC ≅ 1 mA
Salida de contador Amplitud de pulsos de salida: 300 ms ± 20 %
Retardo de tiempo/Variables de conteo 7 y 8
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
* Para aplicaciones con certificación CE, la alimentación eléctrica debe aislarse de la unidad en el momento de
cambiar la posición del interruptor.
SERIE KSPU
Funcionamiento por interruptor de ajuste
*
* Para seleccionar en tiempo en minutos o segundos
Funcionamiento por interruptor de ajuste
RETARDO DE TIEMPO CONTADOR
0,1…102,3
APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3 57 ciclos Retardo de 44 s 2 conteos para iniciar
Diagramas de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
NO = Contactor normalmente
abierto
NC = Contactor normalmente
cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
INTERVALO
(IMPULSOS ACTIVADOS)
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
372 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/tdi-tdih-tdil
SERIES TDI/TDIH/TDIL
Descripción
La serie TDI combina un sistema de circuitos digital preciso con
contactos de relevador DPDT aislados de 10 A en un paquete de
conexión de 8 u 11 pines. La serie TDI incluye retardos de tiempo
seleccionables por interruptor DIP que varían entre 0,1 y 10 230 s en
3 rangos. La serie TDI es el producto ideal para paneles de control
personalizados y diseñadores de fabricantes originales.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. El
relevador de salida se energiza durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, la salida se desenergiza y permanece
desenergizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos digital Exactitud de repetición +/ - 0,1 %,
Exactitud de ajuste +/ - 2 %
Contactos de salida DPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Ajuste por interruptor DIP Brinda exactitud de ajuste del tiempo inicial
Conexión por conector octal
estándar industrial Elimina la necesidad de utilizar conectores especiales
Indicación LED Proporciona indicación visual de temporización y
estado del relevador de salida
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje de superficie con dos tornillos o
anillos de presión n.º 6 (M 3.5 x 0.6) en riel DIN de
35 mm. Utilice abrazaderas de presión PSC8.
Abrazaderas de presión PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilizar con conector octal NDS-8. Se
venden por pares.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA RETARDO DE TIEMPO LED
TDI120AL 120 V CA 1-1023 s en
incrementos de 1 s Sí
TDI12D 12 V CC 1-1023 s en
incrementos de 1 s No
TDIH24AL 24 V CA 10-10 230 s en
incrementos de 10 s Sí
TDIL120AL 120 V CA 0,1-102,3 s en
incrementos de 0,1 s Sí
TDIL24DL 24 V CC 0,1-102,3 s en
incrementos de 0,1 s Sí
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
Los contactos del relevador
están aislados.
8 PINES
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 23.
©2018 Controladores y Relevadores de Protección de Littelfuse 373
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tdi-tdih-tdil
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango** 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
10-10 230 s en incrementos de 10 s
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Exactitud del ajuste ± 2 % o 50 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 50 ms
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ± 2 %
Indicador LED que se activa durante la temporización; el
relevador se energiza
Entrada
Voltaje 12, 24, o 110 V CC; 24, 120, o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - +20 %
110-230 V CC/CA -20 % - +10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 3,25 W
Salida
Tipo Relevador electromecánico
Forma DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y
salida
Mecánica
Montaje Conexión por puerto
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,4");
P 45,2 mm (1,8")
Terminación Conector octal de 8 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
** Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada de la unidad en el momento
de cambiar la posición del interruptor.
Funcionamiento por interruptor binario Digi-Set
APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3 S 544 S 3000 S
0,1…102,3 1…1023 10…10.230
1
2
4
8
16
32
64
128
256
512
10
20
40
80
160
320
640
1280
2560
5120
Diagrama de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIES TDI/TDIH/TDIL
INTERVALO
(IMPULSOS ACTIVADOS) V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
12 RELEVADORES DE RETARDO DE TIEMPO
374 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/tdui-tduih-tduil
SERIES TDUI/TDUIH/TDUIL
Descripción
La serie TDUI combina sistemas de circuitos de temporización digitales
con funcionamiento de voltaje universal. Los voltajes de 24-240 V CA
y 12-24 V CC están disponibles en 3 rangos. La serie TDUI incluye
retardos de tiempo seleccionables por interruptor DIP que varían entre
0,1 y 102,3 min en 3 rangos. Su relevador de salida nominal de 1 A ,
con capacidad para operar en múltiples voltajes, y un amplio rango de
retardos de tiempo seleccionables por interruptor hacen de la Serie TDUI
una excelente opción para sistemas de control de procesos y equipo de
fabricantes originales.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. El
relevador de salida se energiza durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, la salida se desenergiza y permanece
desenergizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Exactitud de ajuste +/ - 2 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Rangos de voltaje extensos Flexibilidad para procesar diversos voltajes inherentes a
sistemas de control y aplicaciones de fabricantes originales
Ajuste por interruptor DIP Brinda exactitud de ajuste del tiempo inicial
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Información para pedir
MODELO VOLTAJE DE ENTRADA RETARDO DE TIEMPO
TDUI3000A 24-120 V CA 1-1023 s
TDUIH3002A 12-24 V CC 0,1-102,3 min
TDUIL3001A 100-240 V CA 0,1-102,3 s
TDUIL3002A 12-24 V CC 0,1-102,3 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = Carga
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 375
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tdui-tduih-tduil
Especificaciones
Retardo de tiempo
Rango* 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
0,1-102,3 min en incrementos de 0,1 m
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Exactitud del ajuste ≤ ± 2 % o 20 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ± 5 %
Entrada
Voltaje 24-240 V CA, 12-24 V CC ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Voltaje de onda CC ≤ 10 %
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Clasificación nominal Corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Corriente de filtración
de estado INACTIVO AC ≅ 5 mA a 230 V CA; CC≅ 1 mA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
*Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada de la unidad en el momento de
cambiar la posición del interruptor.
SERIES TDUI/TDUIH/TDUIL
Funcionamiento por interruptor
Funcionamiento por interruptor de ajuste
RETARDO DE TIEMPO
0,1…102,3
APAGAR ENCENDIDO APAGAR ENCENDIDO
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3
Diagrama de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
INTERVALO
(IMPULSOS ACTIVADOS) V = Voltaje
NO = Contactor normalmente
abierto
NC = Contactor normalmente
cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
12 RELEVADORES DE RETARDO DE TIEMPO
376 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/thd2
SERIE THD2
Descripción
La serie THD2 combina sistemas de circuitos de temporización precisos
con conmutación de estado sólido de alta potencia. Puede conmutar
motores, luces y calentadores directamente sin un contactor. Puede
reducir los costos por componente y mano de obra, y aumentar la
fiabilidad con estos temporizadores pequeños y fáciles de utilizar de
Digi-Power.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. El
relevador de salida se energiza durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, la salida se desenergiza y permanece
desenergizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 1 %
Corrientes de carga altas
hasta de 20 A y de 200 A en
corriente de inserción
Permite un control directo de motores, luces, y
calentadores sin un contactor
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Superficie de montaje
metalizada
Facilita la transferencia de calor en aplicaciones de
corriente alta
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano de
obra
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = Carga
S1 = Interruptor de inicio para
corriente baja opcional
RT se incluye cuando se pide un
ajuste externo.
Información para pedir
MODELO
CLASIFICACIÓN
NOMINAL DE
SALIDA
VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
THD2C420 20 A 120 V CA Externo 0,1-10 s
THD2C423 20 A 120 V CA Externo 0,1-10 min
THD2C433 20 A 120 V CA Integrado 0,1-10 min
THD2C620 20 A 230 V CA Externo 0,1-10 s
THD2C633 20 A 230 V CA Integrado 0,1-10 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
©2018 Controladores y Relevadores de Protección de Littelfuse 377
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/thd2
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE THD2
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima Salida Corriente Corriente
uniforme de inserción**
A 6 A 60 A
B 10 A 100 A
C 20 A 200 A
Corriente de carga mínima 100 mA
Caída de voltaje ≅ 2,5 V a corriente nominal
Corriente de filtración
de estado INACTIVO ≅ 5 mA a 230 V CA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje ** Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
** Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto que se incluye. La
temperatura máxima en la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
INTERVALO
(IMPULSOS ACTIVADOS) V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
Rangos de
retardo
de tiempo
12 RELEVADORES DE RETARDO DE TIEMPO
378 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/thd7
SERIE THD7
Descripción
La serie THD7 utiliza solamente dos terminales conectados en serie
con la carga. El modo de temporización por intervalo se logra utilizando
una pequeña porción de onda senoidal CA permitiendo el paso de
voltaje suficiente para el funcionamiento del circuito. La serie THD7
puede utilizarse para temporización por intervalo o retardo de apagado.
Está diseñado para soportar cargas pesadas directamente, tales como
motores, elementos de calentador, y motores de arranque.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, la salida se energiza y comienza
el retardo de tiempo. La salida permanece energizada durante el retardo
de tiempo. Cuando finaliza el retardo de tiempo, la salida se desenergiza
y permanece desenergizada hasta que se aísle la alimentación.
Restablecimiento: Cuando se aísla el voltaje de entrada se restablece la
salida y el retardo de tiempo.
Funcionamiento de apagado
Cuando se cierra el SW1, la carga se energiza y el temporizador es
restablecido (voltaje cero en sus terminales de entrada). Cuando se
abre el SW1 se vuelve a aplicar el voltaje de entrada al temporizador, la
carga permanece energizada y comienza el retardo de tiempo. Cuando
se cumple el retardo de tiempo, el relevador de salida se desenergiza. Si
el SW1 está abierto al dar paso a la alimentación, la carga se energizará
durante el retardo de tiempo y luego se desenergiza.
Restablecimiento: Cuando se cierra nuevamente el SW1 se restablece
el temporizador.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos digital
integrado Exactitud de repetición +/ - 0,5 %
Corrientes de carga altas
hasta de 20 A y de 200 A en
corriente de inserción
Permite un funcionamiento directo de motores, luces y
calentadores sin un contactor
Estado completamente
sólido y encapsulado
Sin piezas móviles para arco eléctrico y desgaste a través
del tiempo y encapsulado para proteger contra choques
eléctricos, vibración y humedad
Superficie de montaje
metalizada
Facilita la transferencia de calor en aplicaciones de
corriente alta
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes originales
y reduce los costos por componente y mano de obra
Accesorios
P1004-13, P1004-13-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO
DE TIEMPO
CLASIFICACIÓN
NOMINAL DE
SALIDA
THD7421A 120 V CA Externo 1-100 s 6 A
THD7621C 230 V CA Externo 1-100 s 20 A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
L = Carga
S1 = Conmutador de
inicio
RT se incluye cuando se
pide un ajuste externo.
INTERVALO
RETARDO DE APAGADO
12 RELEVADORES DE RETARDO DE TIEMPOPara conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
©2018 Controladores y Relevadores de Protección de Littelfuse 379
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/thd7
Accesorios
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para utilizar
con todos los módulos con terminales de conector
rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Módulo de ajuste para conexión VTP(X)(X)
Montaje en módulos con terminales de ajuste en línea.
Clasificación nominal de 0,25 W a 55 °C. Disponible en
valores de resistencia de 5 kΩ a 5 MΩ
Tabla de selección para accesorios de ajuste para conexión VTP
Retardo de
tiempo
Número de
parte VTP
1 - 1-100 s
2 - 10-1000 s
3 - 0,1-10 m
4 - 1-100 m
5 - 10-1000 m
VTP5G
VTP5K
VTP5N
VTP5P
VTP5R
Guía de selección
Gráfico de selección de RT
Retardo de tiempo deseado*
Megaohmios
Segundos Minutos
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
, ,
,
,
,
,
,
,
,
,
,
,
SERIE THD7
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango 1 s-1000 min en 5 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 10 %
Tiempo de recirculación Después de temporización: ≤ 150ms;
durante la temporización: ≤ 350ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Clasificación nominal Relevador de Corriente Corriente
salida uniforme de inserción**
A 6 A 60 A
B 10 A 100 A
C 20 A 200 A
Caída de voltaje efectiva
(Línea V-Carga V) Entrada Caída efectiva
24 V CA ≤ 3 V
120 V CA ≤ 3 V
230 V CA ≤ 5 V
Corriente de carga mínima 100 mA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje ** Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
** Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto que se incluye. La
temperatura máxima en la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
DELAY-ON-BREAK
L
S1 = Initiate Switch
O = Output
L = Load
TD = Time Delay
R = Reset
= Undefined
Time
INTERVALO
(IMPULSOS ACTIVADOS)
RETARDO DE APAGADO
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
S1 = Conmutador de inicio
O = Salida
L = Carga
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
Diagramas de funciones
12 RELEVADORES DE RETARDO DE TIEMPO
380 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/ts2-ts6
SERIE TS2/TS6
Descripción
La serie TS2 está diseñada para corrientes de 24, 120 o 230 V CA y
la Serie TS6 está diseñada para 12 o 24 V CC. Ambas series tienen la
capacidad de controlar corrientes de carga hasta de 1 A de corriente
uniforme, y 10 A de corriente de inserción. Sistema de circuitos
encapsulado y la fiabilidad de una exactitud de repetición de ± 2 %
hacen de las series TS2 y TS6 ideales para aplicaciones donde los costos
son un factor importante.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. El
relevador de salida se energiza durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, la salida se desenergiza y permanece
desenergizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
analógico
Exactitud de repetición +/ - 2 %,
Calibración de fábrica +/ - 10 %
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas
Clasificación nominal para
funcionamiento
hasta de 75 °C
Pueden utilizarse en los ambientes más severos
Accesorios
A
B P1004-XX (fig. A), P1004-XX-X (fig. B) Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = Carga
RT se incluye cuando se pide
un ajuste externo.
NOTA: TS6 no está protegido contra
polaridad inversa.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
MODO DE
CONMUTACIÓN MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
MODO DE
CONMUTACIÓN
TS22120 24 V CA Fijo 20 s N/A TS2424 120 V CA Externo 5-600 s N/A
TS2223 24 V CA Externo 2-180 s N/A TS6116P 12 V CC Fijo 6 s Positiva
TS2412 120 V CA Fijo 2 s N/A TS6122P 12 V CC Externo 0,5-20 s Positiva
TS24130 120 V CA Fijo 30 s N/A TS6123P 12 V CC Externo 2-60 s Positiva
TS2421 120 V CA Externo 0,05-3 s N/A TS6321P 24 V CC Externo 0,05-3 s Positiva
TS2422 120 V CA Externo 0,5-60 s N/A TS6323P 24 V CC Externo 2-180 s Positiva
TS2423 120 V CA Externo 2-180 s N/A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
TS2
TS6
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 381
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ts2-ts6
Accesorios
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Módulo de ajuste para conexión VTP(X)(X)
Montaje en módulos con terminales de ajuste en línea.
Clasificación nominal de 0,25 W a 55 °C. Disponible en
valores de resistencia de 5 kΩ a 5 MΩ
Tabla de selección para accesorios de ajuste para conexión VTP
TS6 12 V CC
Retardo de
tiempo
Número de
parte VTP
Versa-Pot (potenciómetro)
Fig. A N/P Fig. B N/P
1 - 0,05-1 s
2 - 0,5-20 s
3 - 2-60 s
4 - 5-120 s
VTP2A
VTP2E
VTP2F
VTP2H
P1004-16
P1004-16
P1004-16
P1004-16
P1004-16-X
P1004-16-X
P1004-16-X
P1004-16-X
TS2 y TS6 Todos los demás voltajes
Retardo de
tiempo
Número de
parte VTP
Versa-Pot (potenciómetro)
Fig. A P/N Fig. B N/P
1 - 0,05-3 s
2- 0,5-60 s
3 - 2-180 s
4 - 5-600 s
VTP4B
VTP4F
VTP4J
VTP5N
P1004-12
P1004-12
P1004-12
P1004-13
P1004-12-X
P1004-12-X
P1004-12-X
P1004-13-X
Diagrama de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE TS2/TS6
Guía de selección
Megaohmios
Gráfico de selección de RT
24 V CC o CA SOLAMENTE †
Retardo de tiempo deseado*
Segundos
, ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
* Cuando seleccione un RT externo, agregue al
menos 20 % de tolerancia para la unidad y el RT.
1 Megaohmio máximo para unidades de 12 V CC
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango
12 V CC 0,05-120 s en 4 rangos ajustables o fijos
(1 MΩ máx.)
Otros voltajes 0,05-600 s en 4 rangos ajustables o fijos
Exactitud de repetición ± 2 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 10 %
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Tiempo de restablecimiento ≤ 150 ms
Entrada
Voltaje 12 o 24 V CC; 24 o 20 V CA
Tolerancia ± 15 %
Voltaje de onda CC 10 %
Consumo de energía CC ≤ 1 W; CA ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima corriente uniforme de 1 A,
corriente de inserción de 10 A a 60 °C
Caída de voltaje CC ≅ 1 V a 1 A; CA ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Polaridad TS6 no está protegido contra polaridad inversa
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie de
montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo
no definido
INTERVALO
(IMPULSOS ACTIVADOS)
12 RELEVADORES DE RETARDO DE TIEMPO
382 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/tsd2
SERIE TSD2
L1 N/L2
Temporizador de intervalo
Descripción
La serie TSD2 está diseñada para aplicaciones industriales y comerciales
más exigentes donde se requiere de un mayor rendimiento y tamaño
compacto. La calibración de fábrica para retardos de tiempo fijos
está dentro del 1 % del retardo de tiempo objetivo. La exactitud de
repetición, en condiciones estables, es del 0,1 % del retardo de tiempo.
La serie TSD es apta para operar en un extenso rango de temperatura.
Disponible con retardos de tiempo de 0,1 s a 100 horas. El relevador
de salida tiene clasificación nominal uniforme de 1 A y de corriente de
inserción de 10 A. Los módulos son totalmente de estado sólido y están
encapsulados para proteger el sistema de circuitos electrónico.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. El
relevador de salida se energiza durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, la salida se desenergiza y permanece
desenergizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,1 %,
+/ -1 % de exactitud del retardo de tiempo
Rango de temperatura
extendido
Clasificado para temperatura de funcionamiento de 75 °C y
compatibilidad con aplicaciones de calor extremo.
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, y corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
RT se incluye cuando se
pide un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
TSD2411S 120 V CA Fijo 1 s
TSD24145S 120 V CA Fijo 45 s
TSD241600S 120 V CA Fijo 600 s
TSD2434 120 V CA Integrado 1-100 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 383
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tsd2
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
Diagrama de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE TSD2
Especificaciones
Retardo de tiempo
Rango 0,1 s-100 h en 7 rangos ajustables o fijos
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ±1%
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima corriente uniforme de 1 A,
corriente de inserción de 10 A a 60 °C
Corriente de filtración
de estado Inactivo ≅ 5 mA a 230 V CA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz) INTERVALO
(IMPULSOS ACTIVADOS) V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos, minutos u horas
y y y
y
12 RELEVADORES DE RETARDO DE TIEMPO
384 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/tsd6
SERIE TSD6
(Positive Switching)
(Negative Switching)
Temporizador de intervalo
Descripción
La serie TSD6 ofrece temporización por intervalo y de estado sólido total
para aplicaciones de 12 o 24 V CC. Esta serie permite una conmutación
positiva o negativa. La serie TSD6 está diseñada para aplicaciones
industriales y comerciales más exigentes donde se requiere un mayor
rendimiento y tamaño compacto. La calibración de fábrica para retardos
de tiempo fijos está dentro del 1 % del retardo de tiempo objetivo.
La exactitud de repetición, en condiciones estables, es del 0,1 % del
retardo de tiempo. La serie TSD6 es apta para operar en un extenso
rango de temperatura. Disponible con retardos de tiempo de 0,1 s a
100 horas. El relevador de salida tiene clasificación nominal uniforme de
1 A y de corriente de inserción de 10 A. Los módulos son totalmente de
estado sólido y están encapsulados para proteger el sistema de circuitos
electrónico.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo. El
relevador de salida se energiza durante del retardo de tiempo. Cuando
finaliza el retardo de tiempo, la salida se desenergiza y permanece
desenergizada hasta que se aísle el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,1 %,
+/ -1 % de exactitud del retardo de tiempo
Rango de
temperatura extendido
Clasificado para temperatura de funcionamiento de 75 °C y
compatibilidad con aplicaciones de calor extremo.
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, y corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P1004-95, P1004-95-X Versa-Pot
potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Diagrama de conexiones
RT se incluye cuando se
pide un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
MODO DE
CONMUTACIÓN
TSD6113SP 12 V CC Fijo 3 s Positiva
TSD61115SP 12 V CC Fijo 15 s Positiva
TSD6113SN 12 V CC Fijo 3 s Negativa
TSD6310.8SN 24 V CC Fijo 0,8 s Negativa
TSD631380SP 24 V CC Fijo 380 s Positiva
TSD6320P 24 V CC Externo 0,1-10 s Positiva
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
(Conmutación positiva)
(Conmutación negativa)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 385
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tsd6
Accesorios
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
Diagrama de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SERIE TSD6
Especificaciones
Retardo de tiempo
Rango 0,1 s-100 h en 7 rangos ajustables o fijos
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ±1%
Entrada
Voltaje 12 o 24 V CC
Tolerancia ± 15 %
Voltaje de onda CC ± 10 %
Consumo de energía ≤ 1 W
Salida
Tipo Conmutación positiva o negativa, de estado
sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de filtración
de estado inactivo ≅ 1 mA
Caída de voltaje ≅ 1 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos, minutos u horas
INTERVALO
(IMPULSOS ACTIVADOS)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
y y
y
y
12 RELEVADORES DE RETARDO DE TIEMPO
386 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Intervalo
www.littelfuse.com/tsd7
SERIE TSD7
L1 N/L2
Temporizador por intervalo/Retardo de apagado
Descripción
La serie TSD7 utiliza solamente dos terminales conectados en serie con
la carga. El modo de temporización por intervalo se logra utilizando una
pequeña porción de onda senoidal CA permitiendo el paso de voltaje
suficiente para el funcionamiento del circuito. Puede utilizarse como un
temporizador por intervalo para controlar o conformar impulsos en el
funcionamiento de los contactos, solenoides, relevadores y cargas de
luces. La serie TSD7 puede ser conectada a un retardo a la conexión de
un interruptor para retardos de ventilador de ahorro de energía.
Funcionamiento (Intervalo)
Cuando se aplica el voltaje de entrada, la salida se energiza y comienza
el retardo de tiempo. La salida permanece energizada durante el
retardo de tiempo. Cuando se cumple el retardo de tiempo, la salida
se desenergiza y permanece desenergizada hasta que se aísle la
alimentación.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece la
salida y el retardo de tiempo.
Funcionamiento (Retardo de apagado)
Cuando se cierra el SW1, la carga se energiza y el temporizador es
restablecido (cero voltios en sus terminales de entrada). Cuando se abre
el SW1 se vuelve a aplicar el voltaje de entrada al temporizador, la carga
permanece energizada y comienza el retardo de tiempo. Cuando finaliza
el retardo de tiempo, el relevador de salida se desenergiza. Si el SW1
está abierto al dar paso a la alimentación, la carga se energizará durante
el retardo de tiempo y luego se desenergiza.
Restablecimiento: cuando se cierra nuevamente el SW1 se restablece
el temporizador.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
+/ -1 % de exactitud del retardo de tiempo
Rango de temperatura
extendido
Clasificado para temperatura de funcionamiento de 75 °C y
compatibilidad con aplicaciones de calor extremo
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, y corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Dos conexiones de carga
con terminales en serie
Proporciona una rápida y fácil instalación para sistemas
nuevos o existentes
Diagrama de conexiones
V = Voltaje
L = Carga
S1 = Conmutador de inicio
RT se incluye cuando se pide un
ajuste externo.
Intervalo
Retardo de apagado
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
TSD7412S 120 V CA Fijo 2 s TSD761120S 230 V CA Fijo 120 s
TSD7414M 120 V CA Fijo 4 m TSD761180S 230 V CA Fijo 180 s
TSD7421 120 V CA Externo 1-100 s TSD7611S 230 V CA Fijo 1 s
TSD7423 120 V CA Externo 0,1-10 min TSD7621 230 V CA Externo 1-100 s
TSD7424 120 V CA Externo 1-100 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 387
Relevadores de retardo de tiempo
Dedicado — Intervalo Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tsd7
Accesorios
P1004-13, P1004-13-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Módulo de ajuste para conexión VTP(X)(X)
Montaje en módulos con terminales de ajuste en línea.
Clasificación nominal de 0,25 W a 55 °C. Disponible en
valores de resistencia de 5 kΩ a 5 MΩ
Tabla de selección para accesorios de ajuste para conexión VTP
Retardo de
tiempo
Número de
parte VTP
Retardo de
tiempo
Número de
parte VTP
1 - 1-100 s
2 - 10-1000 s
3 - 0,1-10 m
VTP5G
VTP5K
VTP5N
4 - 1-100 m
5 - 10-1000 m
VTP5P
VTP5R
Guía de selección
Gráfico de selección de RT
Retardo de tiempo deseado*
Megaohmios
Segundos Minutos
,
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
,
,
,
,
,
,
,
,
,
,
,
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango 1 s-1000 min en 5 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 10 %
Tiempo de recirculación ≤ 400 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO, cerrado durante la temporización
Corriente de carga máxima Corriente uniforme de 1 A, corriente de
inserción de 10 A a 45 °C
Corriente de carga mínima 40 mA
Caída de voltaje efectiva
(Línea V-Carga V) Entrada Caída de voltaje efectiva
24 V CA 3 V
120 V CA 4 V
230 V CA 6 V
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Diagramas de funciones
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
DELAY-ON-BREAK
L
S1 = Initiate Switch
O = Output
L = Load
TD = Time Delay
R = Reset
= Undefined
Time
SERIE TSD7
V = Voltaje
S1 = Interruptor de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
O = Salida
L = Carga
TD = Retardo de tiempo
R = Restablecer
= Tiempo no definido
INTERVALO
(IMPULSOS ACTIVADOS)
RETARDO DE APAGADO
12 RELEVADORES DE RETARDO DE TIEMPO
388 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Un disparo reiniciable
www.littelfuse.com/krd9
SERIE KRD9
Diagrama de conexiones
Descripción
El circuito de temporización por microcontrolador Serie KRD9 brinda
una excelente estabilidad y exactitud de repetición. Método económico
para aplicaciones de fabricantes originales que requieren aislamiento,
fiabilidad, duración y tamaño compacto.
Funcionamiento (un disparo reiniciable)
Función Tipo A (Salida inicialmente desenergizada): el voltaje de
entrada debe ser aplicado antes y durante la temporización. Cuando
el interruptor de inicio está cerrado (parcial o totalmente), el relevador
de salida se energiza y se inicia el retardo de tiempo. Cuando finaliza
el retardo de tiempo, se desenergiza el relevador de salida. La unidad
finalizará el tiempo si el S1 permanece en la posición abierto o cerrado
durante el retardo de tiempo completo. Cuando se cierra nuevamente
el interruptor de inicio se restablece el retardo de tiempo y se reinicia la
temporización; el relevador de salida permanece energizado. El relevador
de salida se energizará si el interruptor de inicio está cerrado en el
momento de aplicarse el voltaje de entrada.
Función Tipo B (Salida inicialmente energizada): Cuando se aplica el
voltaje de entrada, el relevador de salida se energiza y se inicia el tiempo
activo. Cuando finaliza el retardo de tiempo, la carga se desenergiza.
La unidad finalizará el tiempo si el S1 permanece en la posición abierto
o cerrado durante el retardo de tiempo completo. Cuando se cierra (o
vuelve a cerrarse) el interruptor de inicio se restablece el retardo de
tiempo y se reinicia la temporización; el relevador de salida permanece
energizado.
Restablecimiento: el retardo de tiempo y el relevador de salida se
restablecen al aislar el voltaje de entrada.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 5 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano de
obra
Contactos de salida SPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Sistema de circuitos
encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
L1 N/L2
V = Voltaje
S1 = Interruptor de inicio C = Contactor
de transferencia común
UTL = Carga (opcional) no medida
En las unidades ajustables se
incluye una perilla, o terminales RT
4 y 5 para ajuste externo. Consulte
ajuste externo vs. gráfica de retardo
de tiempo La carga no medida es
opcional. Los contactos del relevador
están aislados.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
TIPO DE
FUNCIÓN
KRD9120B 12 V CC Integrado 0,1-10 s Energizado
KRD92115MA 24 V CA/
CC Fijo 15 m Desenergizado
KRD92115MB 24 V CA/CC Fijo 15 m Energizado
KRD9220B 24 V CA/CC Integrado 0,1-10 s Energizado
KRD93115MA 24 V CC Fijo 15 m Desenergizado
KRD9423B 120 V CA Integrado 0,1-10 min Energizado
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 389
Relevadores de retardo de tiempo
Dedicado — Un disparo reiniciable Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/krd9
SERIE KRD9
Accesorios
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Corriente de salida/Temperatura ambiente
Especificaciones
Retardo de tiempo
Tipo Basado en microcontrolador con sistema de
circuitos de vigilancia
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 40 ms; ≤ 750 operaciones por minuto
Retardo de tiempo vs.
temperatura voltaje ≤ ± 5 %
Entrada
Voltaje 12, 24 o 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - +20 %
110 V CC, 120 o 230 V CC -20 % - +10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Contactos de relevador aislados
Forma SPDT
Clasificación nominal (a 40 °C) 10 A resistiva a 125 V CA;
5 A resistiva a 230 V CA y 28 V CC;
1/4 HP a 125 V CA
Máx. Voltaje de conmutación 250 V CA
Duración (Operaciones) Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
Diagrama de funciones
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSD)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
t = Incomplete
Time Delay
TD = Time Delay
R = Reset
V = Voltaje
S1 = Conmutador de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
t = Retardo de tiempo
incompleto
TD = Retardo de tiempo
R = Restablecer
UN DISPARO REINICIABLE
(DETECTOR DE MOVIMIENTO) (PSD)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
390 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Un disparo reiniciable
www.littelfuse.com/tsd94110sb
TSD94110SB
Temporizador con un disparo reiniciable
Diagrama de conexiones
Descripción
El temporizador con un disparo reiniciable TSD94110SB está diseñado
para utilizarse en diversas aplicaciones. Su sistema de circuitos digital
proporciona retardos extensos o cortos con exactitud y estabilidad
en un amplio rango de temperatura y voltaje. Es el temporizador ideal
para monitoreo por pulsos en controladores programables, o cualquier
sistema que requiera de detección de movimiento.
Funcionamiento Tipo A
La alimentación debe asignarse en la entrada en todo momento antes y
durante la temporización. Cuando se cierra el interruptor de inicio (parcial
o totalmente), la carga se energiza y se inicia el retardo de tiempo. Al
completar el periodo de retardo, la carga se desenergiza. Si el interruptor
de inicio se vuelve a cerrar durante la temporización, el retardo será
restablecido a cero y se reiniciará.
Funcionamiento Tipo B
Cuando se aplica la alimentación de entrada, la carga se energiza y se
inicia un retardo de tiempo. Cuando finaliza el retardo de tiempo, la carga
se desenergiza. Si el interruptor de inicio se cierra, o vuelve a cerrar,
durante la temporización, el retardo se restablece a cero y se reinicia.
Características y beneficios
J Excelente monitor de impulsos
J Estado sólido completo y encapsulado
J Sistema de circuitos por microcontrolador
J Restablecimiento rápido a cero durante la temporización
J Excelente exactitud y fiabilidad
J Las unidades de CC están protegidas contra polaridad inversa
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango Fijo desde fábrica en 10 s
Exactitud de repetición ± 0,5 %
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de recirculación 300 ms máximo
Retardo de tiempo vs.
temperatura y voltaje ± 2 %
Temporización de inicio 16 ms máximo CA
Entrada
Voltaje de funcionamiento 120 voltios CA
Tolerancia ± 15 %
Salida
Tipo Estado sólido
Forma Normalmente abierto
Clasificación nominal 1 amperio de corriente uniforme, 10 amperios
de corriente de inserción a 55 °C
Caída de voltaje CA 2,5 voltios típica a 1 amperio
Protección
Protegido contra rápidos transitorios eléctricos
Voltaje disruptivo dieléctrico 1500 voltios RMS
Resistencia de aislamiento 100 MΩ, mínimo 4,4
Mecánica
Montaje Montaje de superficie con un tornillo n.º 8 o
n.º 10
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Paquete Acoplamiento moldeado con sistema de
circuitos encapsulado
Dimensiones H 50,80 mm (2"); A 50,80 mm (2");
P 30,70 mm (1,21")
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso aproximadamente 68 g (2,4 oz)
Diagrama de funciones
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSE)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
t = Incomplete
Time Delay
TD = Time Delay
R = Reset
V = Voltaje
L = Carga medida
UTL = Carga opcional no medida
S1 = Conmutador de inicio
RT se incluye cuando se pide
un ajuste externo.
L1 N/L2
V = Voltaje
S1 = Conmutador de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
t = Retardo de tiempo
incompleto
TD = Retardo de tiempo
R = Restablecer
UN DISPARO REINICIABLE
(DETECTOR DE MOVIMIENTO) (PSE)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 391
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/erd3425A
ERD3425A
L1 N/L2
Se incluye una perilla, o
terminales 9 y 10, solo en las
unidades ajustables.
Los contactos del relevador están
aislados.
RT se incluye cuando se pide un
ajuste externo.
Descripción
Los econotemporizadores son una combinación de electrónicos digitales
y un relevador electromecánico fiable. La salida de relevador DPDT para
circuitos lógica de relevador, y aislamiento de voltaje de entrada y salida.
Una opción económica para aplicaciones de fabricantes originales, tales
como ciclos experimentales, secado, lavado, señalización y uso de luces
intermitentes.
Funcionamiento (Recirculación - tiempo de ACTIVIDAD inicial
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T1. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como sea aplicado el voltaje de entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
primer retardo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos digital
integrado
Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 10 %
Contactos de salida DPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-16, P1004-16-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 25.
392 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/erd3425A
ERD3425A
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango 0,1 s-500 min en 11 rangos ajustables o
0,1 s-1000 min fijo
Ajuste Por perilla, ajuste externo o fijo
Exactitud de repetición ± 0,5 %
Tolerancia
(Calibración de fábrica) ≤ ± 10 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12, 24 o 120 V CC; 24, 120, o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
120 V CC/CA y 230 V CA -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Contactos de relevador aislados
Forma DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje en superficie con dos tornillos n.º 6
(M3.5 x 0.6)
Dimensiones H 88,9 mm (3,5"); A63,5 mm (2,5");
P 43,2 mm (1,7")
Terminación Terminales de conector rápido macho
(6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 65 °C/-40 °C a 85 °C
Peso ≅ 162 g (5,7 oz)
Guías de selección
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
Megaohmios
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
,
,
,
,
,
,
,
,
,
,
, , , , , ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Gráfico de selección de RT
Retardo de tiempo deseado*
Megaohmios
* Cuando seleccione un RT externo, agregue al menos
20 % de tolerancia para la unidad y el RT.
, ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
Minutos
Diagrama de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECIRCULACIÓN
(ACTIVO EN TIEMPO INICIAL)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD =2 = Retardo de
tiempo
R = Restablecer
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 393
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/esdr
SERIE ESDR
Descripción
La serie ESDR ofrece ajustes de tiempo independiente para ambos
periodos de retardo. Las opciones de ajuste incluyen ajustes fijos,
integrados o externos. Se recomienda el ESDR para secado al aire,
lubricación automática, pruebas de resistencia, diagnósticos químicos
y ciclos experimentales automáticos. Esta serie está diseñada para
propósito general en aplicaciones comerciales e industriales donde se
requiere un temporizador de estado sólido fiable, pequeño y económico.
La calibración de fábrica para los retardos de tiempo fijos es de <± 5 %.
La exactitud de repetición, en condiciones estables, es del 0,1 % del
retardo de tiempo seleccionado. Esta serie está diseñada para voltajes
de entrada de 12 V CC a 230 V CA en cinco rangos. Retardos de tiempo
de 0,1 s a 1000 minutos disponibles en seis rangos. El relevador de
salida tiene clasificación nominal uniforme de 1 A y de corriente de
inserción de 10 A. Los módulos son totalmente de estado sólido y están
encapsulados para proteger el sistema de circuitos electrónico.
Funcionamiento (Recirculación - Tiempo de ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T1. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como se aplique el voltaje de entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
primer retardo.
Funcionamiento (Recirculación - Tiempo de INACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, se inicia el tiempo de
INACTIVIDAD T2. Cuando finaliza el tiempo de INACTIVIDAD, el
relevador de salida se energiza y comienza el tiempo de ACTIVIDAD
T1. Cuando finaliza el tiempo de ACTIVIDAD, el relevador de salida se
energiza y se repite el ciclo tantas veces como sea aplicado el voltaje de
entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
primer retardo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,1 %,
Calibración de fábrica +/ - 5 %
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Recirculación ACTIVA/
INACTIVA con ajuste
independiente de ambos
periodos de tiempo
Configuraciones de temporización activa e inactiva
independientes ajustables por perilla para mayor
flexibilidad
Diseño compacto y de bajo
costo que mide 50,8 mm
(2 in)
Brinda flexibilidad para aplicaciones de fabricantes
originales
Información para pedir
Ver página siguiente.
Diagrama de conexiones
V = Voltaje
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
RT se incluye cuando se pide
un ajuste externo. Se incluye
una perilla para ajustes en
la unidad y terminales para
ajuste externo.
L1 N/L2
(Positive Switching)
(Negative Switching)
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de pernos
Terminal de adaptador de pernos diseñada para utilizar
con todos los módulos con terminales de conector
rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
(Conmutación positiva)
(Conmutación negativa)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
394 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/esdr
SERIE ESDR
Información para pedir
MODELO VOLTAJE DE ENTRADA AJUSTE TIEMPO ACTIVO T1 RETARDO INICIAL TIEMPO INACTIVO T2 MODO DE CONMUTACIÓN
ESDR120A0P 12 V CC Integrado 0,1-10 s Tiempo activo 0,1-10 s Positivo
ESDR120B3P 12 V CC Integrado 0,1-10 s Tiempo inactivo 0,1-10 min Positivo
ESDR123B4P 12 V CC Integrado 0,1-10 min Tiempo inactivo 1-100 min Positivo
ESDR125A5P 12 V CC Integrado 10-1000 min Tiempo activo 10-1000 min Positivo
ESDR221A2 24 V CA Integrado 1-100 s Tiempo activo 10-1000 s N/A
ESDR320A0P 24 V CC Integrado 0,1-10 s Tiempo activo 0,1-10 s Positivo
ESDR320A3P 24 V CC Integrado 0,1-10 s Tiempo activo 0,1-10 min Positivo
ESDR420A0 120 V CA Integrado 0,1-10 s Tiempo activo 0,1-10 s N/A
ESDR420A1 120 V CA Integrado 0,1-10 s Tiempo activo 1-100 s N/A
ESDR420A4 120 V CA Integrado 0,1-10 s Tiempo activo 1-100 min N/A
ESDR420B1 120 V CA Integrado 0,1-10 s Tiempo inactivo 1-100 s N/A
ESDR420B4 120 V CA Integrado 0,1-10 s Tiempo inactivo 1-100 min N/A
ESDR421A1 120 V CA Integrado 1-100 s Tiempo activo 1-100 s N/A
ESDR421A4 120 V CA Integrado 1-100 s Tiempo activo 1-100 min N/A
ESDR423A3 120 V CA Integrado 0,1-10 min Tiempo activo 0,1-10 min N/A
ESDR423A4 120 V CA Integrado 0,1-10 min Tiempo activo 1-100 min N/A
ESDR424A1 120 V CA Integrado 1-100 min Tiempo activo 1-100 s N/A
ESDR450A1 120 V CA Externo 0,1-10 s Tiempo activo 1-100 s N/A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagramas de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
V = Voltaje
NO = Contactor normalmente
abierto
NC = Contactor normalmente
cerrado
TD1, TD2 = Retardo de tiempo
R = Restablecer
RECIRCULACIÓN
(ACTIVO EN TIEMPO INICIAL)
RECIRCULACIÓN
(TIEMPO DE INACTIVIDAD INICIAL)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 395
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/esdr
SERIE ESDR
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Tiempo de restablecimiento ≤ 150 ms
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia ± 20 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Salida
Tipo Estado sólido
Corriente de carga máxima Corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de filtración
de estado INACTIVO CA ≅ 5 mA a 230 V CA; CC ≅ 1 mA
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho (6,35 mm)
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
12 RELEVADORES DE RETARDO DE TIEMPO
396 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/hrdr
SERIE HRDR
L1 N/L2
Temporizador de recirculación
Descripción
La serie HRDR combina un relevador electromecánico con un
sistema de circuitos de temporización por microcontrolador. Ofrece
un funcionamiento de 12-230 V en cinco rangos y retardos de tiempo
ajustables fijos desde fábrica, integrados o externos con una exactitud
de repetición de ± 0,5 %. La alta capacidad de conmutación de los
contactos de salida permite un control directo de cargas pesadas
como en compresores, bombas, motores, calentadores y sistemas de
iluminación. Una opción de interruptor de restablecimiento/derivación
permite al operador interrumpir la secuencia de recirculación normal y
energizar el relevador de salida. Una opción excelente para aplicaciones
de fabricantes originales.
Funcionamiento (Recirculación con interruptor de restablecimiento)
Cuando se aplica el voltaje de entrada, se inicia el Tiempo ACTIVO T1 y
el relevador de salida se energiza. Cuando finaliza el tiempo ACTIVO, el
relevador de salida se desenergiza y se inicia el tiempo INACTIVO T2.
Cuando finaliza el tiempo INACTIVO, el relevador de salida se energiza y
se repite el ciclo tantas veces como sea aplicado el voltaje de entrada.
Ciertos temporizadores de recirculación tienen el tiempo INACTIVO
como retardo inicial.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
primer retardo.
Interruptor de restablecimiento/derivación: al cerrar el interruptor
de restablecimiento/derivación normalmente abierto se energiza el
relevador de salida y se restablecen los retardos de tiempo. Al abrir el
interruptor se reinicia el funcionamiento de recirculación con el
retardo inicial.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Contactos de salida NO,
SPDT, aislados de 30 A
Permiten el funcionamiento directo para cargas pesadas:
compresores, bombas, motores de ventilador, calentadores.
Encapsulado Protege contra impactos, vibración y humedad
Ajuste independiente en
retardos Activo e Inactivo
Proporciona mayor flexibilidad entre opciones de
temporización
Opción de interruptor
de restablecimiento/
derivación
Permite al operador interrumpir la secuencia de
temporización y energizar el retardo de salida
Diagrama de conexiones
NO = Normalmente abierta
S1 = Interruptor de
restablecimiento
C = Sonda común o contacto
de transferencia
L = Carga
Los terminales 4 y 5, o 7 y 8 solo
se incluyen en unidades ajustables
externamente. Los contactos del
relevador no están aislados. El RT
se incluye al ordenar un ajuste
externo. La terminal 6 se incluye al
elegir la opción Restablecimiento/
Derivación.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE EXTERNO TIEMPO ACTIVO T1 SECUENCIA DE OPERACIÓN TIEMPO INACTIVO T2
OPCIÓN DE
RESTABLECIMIENTO/
DERIVACIÓN
HRDR121A4R 12 V CC Ajuste integrado en ambos tiempos 1-100 s Tiempo de actividad inicial 1-100 min Sí
HRDR321A4R 24 V CC Ajuste integrado en ambos tiempos 1-100 s Tiempo de actividad inicial 1-100 min Sí
HRDR322B2R 24 V CC Ajuste integrado en ambos tiempos 10-1000 s Tiempo de inactividad
inicial 10-1000 s Sí
HRDR330A0R 24 V CC Ajuste externo en ambos tiempos 0,1-10 s Tiempo de actividad inicial 0,1-10 s Sí
HRDR331A1 24 V CC Ajuste externo en ambos tiempos 1-100 s Tiempo de actividad inicial 1-100 s No
HRDR411SB30MR 120 V CA Ambos tiempos fijos 1 s Tiempo de inactividad
inicial 30 m Sí
HRDR431A1R 120 V CA Ajuste externo en ambos tiempos 0,1-100 s Tiempo de actividad inicial 0,1-100 s Sí
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 17.
©2018 Controladores y Relevadores de Protección de Littelfuse 397
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hrdr
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
SERIE HRDR
Especificaciones
Retardo de tiempo
Rango 100 ms-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC -15 % - 20 %
24-230 V CA -20 % - 10 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía CA ≤ 4 VA; CC ≤ 2 W
Salida
Tipo Relevador electromecánico
Forma SPDT, no aislada
Clasificaciones nominales SPDT-NO SPDT-NC
Propósito general 125/240 V CA 30 A 15 A
Resistiva 125/240 V CA 30 A 15 A
28 V CC 20 A 10 A
Carga del motor 125 V CA 1 HP* 1/4 HP**
240 V CA 2 HP** 1 HP**
Duración Mecánica - 1 x 106
;
Eléctrica - 1 x 105
, *3 x104
, **6000
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 76,7 mm (3"); A 51,3 mm (2");
P 38,1 mm (1,5")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
Diagrama de funciones
RECYCLING WITH
RESET SWITCH
S1 = INTERRUPTOR DE RESTABLECIMIENTO
RECIRCULACIÓN CON
INTERRUPTOR DE RESTABLECIMIENTO
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
398 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/krd3
SERIE KRD3
Descripción
La serie KRD3 solo mide 50,8 mm (2 in) cuadrados. Su circuito de
temporización de estado sólido brinda una excelente estabilidad y
exactitud de repetición. Su encapsulación protege contra impactos,
vibración, y humedad. La serie KRD3 es una opción económica para
aplicaciones de fabricantes originales que requieren aislamiento,
fiabilidad, duración y tamaño compacto.
Funcionamiento (Recirculación - tiempo de ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T1. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como se aplique el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece el
relevador de salida y los retardos de tiempo, y regresa la secuencia al
tiempo ACTIVO T1.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto y de bajo
costo que mide 50,8 mm
(2 in)
Brinda mayor flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano de
obra
Basado en microcontrolador Exactitud de repetición +/ -0,5 %,
Calibración de fábrica +/ - 5 %
Contactos de salida SPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagrama de conexiones
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO DE
TIEMPO
SECUENCIA DE
OPERACIÓN
KRD3420A 120 V CA Perilla integrada 0,1-10 s
Tiempo de
actividad
inicial
KRD3421A 120 V CA Perilla integrada 1-100 s
Tiempo de
actividad
inicial
KRD3434A 120 V CA Externo 1-100 min
Tiempo de
actividad
inicial
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
C = Sonda común o contacto de
transferencia
NO = Normalmente abierta
NC = Normalmente cerrada
En las unidades ajustables se incluye
una perilla, o terminales RT 4 y 5
para ajuste externo. Consulte ajuste
externo vs. gráfico de retardo de
tiempo.
Los contactos del relevador están
aislados.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 399
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/krd3
SERIE KRD3
Resistencia externa vs. Retardo de tiempo
Corriente de salida/Temperatura ambiente
Diagrama de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango 0,1 s-100 min en 5 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ± 5 %
Entrada
Voltaje 12, 24 or 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110 V CC, 120 o 230 V CA -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Contactos de relevador aislados
Forma SPDT
Clasificación nominal (a 40 °C) 10 A resistiva a 125 V CA;
5 A resistiva a 230 V CA y 28 V CC;
1/4 HP a 125 V CA
Máx. Voltaje de conmutación 250 V CA
Duración (Operaciones) Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
RECIRCULACIÓN
(ACTIVO EN TIEMPO INICIAL)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD =2 = Retardo de
tiempo
R = Restablecer
y y
12 RELEVADORES DE RETARDO DE TIEMPO
400 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/krdr
SERIE KRDR
Descripción
La serie KRDR es un relevador de retardo de tiempo compacto cuya
medida es de 50,8 mm (2 in) cuadrados. Su circuito de temporización de
estado sólido brinda una excelente estabilidad y exactitud de repetición.
Su encapsulación protege contra impactos, vibración, y humedad.
La serie KRDR es un temporizador de recirculación económico para
aplicaciones de fabricantes originales que requieren aislamiento,
fiabilidad, duración y tamaño compacto.
Funcionamiento (Recirculación - tiempo de ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T2. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T1. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como sea aplicado el voltaje de entrada
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
tiempo ACTIVO.
Funcionamiento (Recirculación - tiempo de INACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, se inicia el tiempo de INACTIVIDAD
T1. Cuando finaliza el tiempo INACTIVO, se inicia el tiempo ACTIVO T2
y la carga se energiza. Cuando finaliza el tiempo ACTIVO la carga se
desenergiza, y el ciclo se repite hasta que se aísle el voltaje de entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida, los retardos de tiempo y la secuencia al tiempo
INACTIVO.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto y ajuste
independiente para tiempos
ACTIVO e INACTIVO
Brinda mayor flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano de
obra
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 5 %
Contactos de salida SPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Protege contra impactos, vibración y humedad
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagrama de conexiones
V = Voltaje
C = Común
NO = Normalmente abierta
NC = Normalmente cerrada
T1 = Tiempo INACTIVO
T2 = Tiempo ACTIVO
Incluye una perilla para unidades
ajustable.
L1 N/L2
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTABLE TIEMPO
ACTIVO T2
RETARDO
INICIAL
TIEMPO
INACTIVO
T1
KRDR115MB25M 12 V CC Fijo 5 m Tiempo inactivo 25 m
KRDR120A0 12 V CC Ajustable 0,1-10 s Tiempo activo 0,1-10 s
KRDR121A1 12 V CC Ajustable 1-100 s Tiempo activo 1-100 s
KRDR320B0 24 V CC Ajustable 0,1-10 s Tiempo inactivo 0,1-10 s
KRDR321A4 24 V CC Ajustable 1-100 s Tiempo activo 1-100 min
KRDR321B4 24 V CC Ajustable 1-100 s Tiempo inactivo 1-100 min
KRDR420A3 120 V CA Ajustable 0,1-10 s Tiempo activo 0,1-10 min
KRDR421A4 120 V CA Ajustable 1-100 s Tiempo activo 1-100 min
KRDR424A0 120 V CA Ajustable 1-100 min Tiempo activo 0,1-10 s
KRDR424A4 120 V CA Ajustable 1-100 min Tiempo activo 1-100 min
KRDR440.5SA0 120 V CA Activo en
tiempo fijo 0,5 s Tiempo activo 0,1-10 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 401
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/krdr
SERIE KRDR
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ± 5 %
Entrada
Voltaje 12, 24 o 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110 V CC y 120 o 230 V CA -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Contactos de relevador aislados
Forma SPDT
Clasificación nominal (a 40 °C) 10 A resistiva a 125 V CA;
5 A resistiva a 230 V CA y 28 V CC;
1/4 HP a 125 V CA
Máx. Voltaje de conmutación 250 V CA
Duración (Operaciones) Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y
salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
Temperatura -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
Corriente de salida/Temperatura ambiente
Diagramas de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1 = OFF Time
TD2 = ON Time
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
T1 = Tiempo INACTIVO
T2 = Tiempo ACTIVO
R = Restablecer
RECIRCULACIÓN
(ACTIVO EN TIEMPO INICIAL)
RECIRCULAR
(TIEMPO DE
INACTIVIDAD INICIAL)
12 RELEVADORES DE RETARDO DE TIEMPO
402 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/ksd3
SERIE KSD3
Luces intermitentes de recirculación
Descripción
La serie KSD3 Digi-Timer es un método económico para aplicaciones
de recirculación ACTIVO/INACTIVO. El tiempo activo es igual al tiempo
inactivo. Un ajuste del RT cambiará los retardos de tiempo de ambos
tiempos. Esta serie está diseñada para propósito general en aplicaciones
comerciales e industriales donde se requiere un temporizador de
estado sólido fiable, pequeño y económico. La calibración de fábrica
para retardos de tiempo fijos está dentro del 5 % del retardo de tiempo
objetivo. La exactitud de repetición, en condiciones estables, es del
0,5 % del retardo de tiempo seleccionado. Esta serie está diseñada para
voltajes CA y CC comunes. Retardos de tiempo de 0,1 s a 1000 minutos
disponibles en 6 rangos. El relevador de salida tiene clasificación
nominal uniforme de 1 A y de corriente de inserción de 10 A. Los
módulos son totalmente de estado sólido y están encapsulados para
proteger el sistema de circuitos electrónico.
Funcionamiento (Luces intermitentes de recirculación - tiempo de
ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T1. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como se aplique el voltaje de entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
tiempo ACTIVO.
Funcionamiento (Recirculación - tiempo de INACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, se inicia el tiempo de
INACTIVIDAD T2. Cuando finaliza el tiempo de INACTIVIDAD, se inicia
el tiempo de ACTIVIDAD T1 y la carga se energiza. Cuando finaliza el
tiempo ACTIVO la carga se desenergiza, y el ciclo se repite hasta que se
aísle el voltaje de entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y la secuencia al tiempo INACTIVO.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
+/ -5 % de exactitud del retardo de tiempo
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, y corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = Carga
RT se incluye cuando se
pide un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTE RETARDO
DE TIEMPO
SECUENCIA DE
FUNCIONAMIENTO
KSD3120A 12 V CC Externo 0,1-10 s Tiempo de
ACTIVIDAD inicial
KSD3310.1SA 24 V CC Fijo 0,1 s Tiempo de
ACTIVIDAD inicial
KSD3415MA 120 V CA Fijo 5 m Tiempo de
ACTIVIDAD inicial
KSD3432A 120 V CA Integrado 10-1000 s Tiempo de
ACTIVIDAD inicial
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 403
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ksd3
Accesorios
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
SERIE KSD3
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia (
Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ±10%
Entrada
Voltaje 24 o 120 V CA; 12 o 24 V CC
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Salida
Tipo Estado sólido
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de filtración
de estado INACTIVO CA ≅ 5 mA a 230 V CA; CC ≅ 1 mA
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Funcionamiento de CC Conmutación negativa solamente
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Diagramas de funciones
FLASHER (ON FIRST)
El Tiempo ACTIVO más el tiempo INACTIVO
son iguales a un parpadeo completo.
FLASHER (OFF FIRST)
V = Voltaje
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
T1 ≅ T2
R = Restablecer
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
LUZ INTERMITENTE
(ACTIVA EN TIEMPO INICIAL)
LUZ INTERMITENTE
(INACTIVA EN TIEMPO INICIAL)
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
404 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/ksdr
SERIE KSDR
Descripción
La serie KSDR ofrece ajustes de tiempo independientes para ambos
periodos de retardo. Se recomienda el KSDR para secado al aire,
lubricación automática, pruebas de resistencia, diagnósticos químicos
y ciclos experimentales automáticos. Esta serie está diseñada para
propósito general en aplicaciones comerciales e industriales donde se
requiere un temporizador de estado sólido fiable, pequeño y económico.
La calibración de fábrica para retardos de tiempo fijos está dentro del
± 5 % del retardo objetivo. La exactitud de repetición, en condiciones
estables, es del 0,5 % del retardo de tiempo seleccionado. Esta serie
está diseñada para voltajes de entrada de 24, 120 o 230 V CA. Retardos
de tiempo de 0,1 s a 1000 minutos disponibles en 6 rangos. El relevador
de salida tiene clasificación nominal uniforme de 1 A y de corriente de
inserción de 10 A. Los módulos son totalmente de estado sólido y están
encapsulados para proteger el sistema de circuitos electrónico.
Funcionamiento (Recirculación - Tiempo de ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T1. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como se aplique el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece el
relevador de salida y los retardos de tiempo, y regresa la secuencia al
tiempo ACTIVO T1.
Funcionamiento (Recirculación - Tiempo de INACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, se inicia el tiempo de
INACTIVIDAD T2. Cuando finaliza el tiempo de INACTIVIDAD, se inicia el
tiempo de ACTIVIDAD T1 y la carga se energiza. Cuando finaliza el T1, se
inicia el T2 y la carga se desenergiza. Este ciclo se repite hasta que se
aísle el voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece el
relevador de salida y la secuencia al tiempo INACTIVO T2.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ -0,5 %,
Calibración de fábrica +/ - 5 %
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Amplio rango de
temperatura de
funcionamiento:
-40 °C a 75 °C
Fiable en aplicaciones industriales y
comerciales de alto rendimiento
Diseño compacto y de bajo
costo que mide 50,8 mm
(2 in)
Brinda flexibilidad para aplicaciones de fabricantes
originales
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = Carga
RT se incluye cuando se pide
un ajuste externo.
Información para pedir
MODELO VOLTAJE DE
ENTRADA
TIEMPO
ACTIVO T1
RETARDO
INICIAL
TIEMPO
INACTIVO T2
KSDR40A0 120 V CA 0,1-10 s Tiempo activo 0,1-10 s
KSDR42A4 120 V CA 10-1000 s Tiempo activo 1-100 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 405
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ksdr
SERIE KSDR
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagramas de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Clasificación nominal Corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Caída de voltaje ≅ 2,5 V a 1 A
Corriente de filtración
de estado INACTIVO ≅ 5 mA a 230 V CA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD2 = Retardo de
tiempo
R = Restablecer
RECIRCULACIÓN
(ACTIVO EN TIEMPO INICIAL)
RECIRCULACIÓN
(TIEMPO DE
INACTIVIDAD INICIAL)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
406 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/kspd
Especificaciones
Diagrama de conexiones
L1 N/L2
(Positive Switching)
(Negative Switching)
V = Voltaje
L = Carga
S1 = Conmutador de inicio
UTL = Carga no medida
T1 y RT1 = Ajuste inicial
T2 y RT2 = Ajuste secundario
SERIE KSPD
Descripción
La serie KSPD es un módulo programado desde fábrica disponible en
12 funciones duales estándar. Los retardos de tiempo pueden tener
ajuste integrado, fijo o externo, o una combinación de fijo y ajustable.
El relevador de salida de estado sólido con corriente uniforme de 1 A
y corriente de inserción de 10 A brinda 100 millones de operaciones
típicas. Su circuito de temporización por microcontrolador brinda una
excelente estabilidad y exactitud de repetición. Su encapsulación
protege contra impactos, vibración, y humedad. La serie KSPD es
una opción económica para aplicaciones de fabricantes originales que
requieren tamaño compacto y larga duración.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Temporizador de estado sólido
Información para pedir
MODELO ENTRADA AJUSTE 1 RETARDO DE
TIEMPO 1 AJUSTE 2 RETARDO DE
TIEMPO 2 FUNCIONES
KSPDA2222RXE 24-240 V CA Integrado 1-100 s Integrado 1-100 s Recirculación/Tiempo de actividad inicial
KSPDP110M18SRXE 12-120 V CC
conmutación positiva Fijo 10 minutos Fijo 8 s Recirculación/Tiempo de actividad inicial
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Ubicación de terminales para ajuste externo.
(Conmutación positiva)
(Conmutación negativa)
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 407
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/kspd
SERIE KSPD
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 0,1 s-1000 h en 9 rangos ajustables o fijos
(hasta 999)
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 2 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 20 ms; ≤ 1500 operaciones por minuto
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12-120 V CC; 24-240 V CA
Tolerancia ≤ ± 15 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Salida
Tipo Relevador de estado sólido
Clasificación nominal corriente uniforme de 1 A,
corriente de inserción de 10 A para 16 ms
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Corriente de filtración
de estado INACTIVO CA ≅ 5 mA a 230 V CA; CC ≅ 1 mA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 2000 V RMS en terminales para montaje en
superficie
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje* Montaje en superficie con un tornillo n.º 10
(M5 x 0,8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho 6,35 mm
(0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Diagramas de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
DELAY-ON-MAKE / DELAY-ON-BREAK V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
= Undefined
Time DELAY-ON-MAKE / INTERVAL V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
DELAY-ON-MAKE / SINGLE SHOT
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
V = Voltaje
S1 = Conmutador de inicio
NO = Contactor normalmente
abierto
NC = Contactor normalmente
cerrado
TD1, TD2 = Retardo de tiempo
R = Restablecer
= Tiempo no definido
RECIRCULAR (TIEMPO DE
INACTIVIDAD INICIAL)
RETARDO DE ENCENDIDO/
ACTIVACIÓN ÚNICA
RETARDO DE
ENCENDIDO/INTERVALO
RETARDO DE ENCENDIDO/
RETARDO DE APAGADO
RECIRCULACIÓN (ACTIVO
EN TIEMPO INICIAL)
12 RELEVADORES DE RETARDO DE TIEMPO
408 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/rs
SERIE RS
Descripción
La serie RS es un temporizador de recirculación, encapsulado y de
estado sólido diseñado para entornos industriales severos. Se utiliza en
diversas pruebas de laboratorio como probador del ciclo de vida de un
producto, o bien, como controlador de ciclo. La serie RS tiene ajustes
por interruptor DIP separados para el retardo de tiempo activo e inactivo.
Esta serie permite realizar ajustes exactos en el tiempo inicial, en cada
instancia. Los retardos de tiempo de 0,1 s a 1023 h están disponibles en
4 rangos.
Funcionamiento (Recirculación - tiempo de ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo de ACTIVIDAD T1. Cuando finaliza el tiempo ACTIVO,
la salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando
finaliza el tiempo INACTIVO, el relevador de salida se energiza y se
repite el ciclo tantas veces como se aplique el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece el
relevador de salida y los retardos de tiempo, y regresa la secuencia al
tiempo ACTIVO.
Funcionamiento (Recirculación - tiempo de INACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, se inicia el tiempo de
INACTIVIDAD T2. Cuando finaliza el tiempo de INACTIVIDAD, el
relevador de salida se energiza y comienza el tiempo de ACTIVIDAD
T1. Cuando finaliza el tiempo de ACTIVIDAD, el relevador de salida se
energiza y se repite el ciclo tantas veces como sea aplicado el voltaje de
entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece el
relevador de salida y los retardos de tiempo, y regresa la secuencia al
tiempo INACTIVO.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,1 %,
Exactitud de ajuste +/ - 2 %
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Configuración del retardo de
tiempo ACTIVO e INACTIVO
El ajuste independiente proporciona mayor
flexibilidad en la temporización
Ajuste por interruptor DIP Brinda exactitud de ajuste del tiempo inicial
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = Carga
Información para pedir
MODELO VOLTAJE DE
ENTRADA
RETARDO
INICIAL TIEMPO ACTIVO T1 TIEMPO INACTIVO T2 MODELO VOLTAJE DE
ENTRADA
RETARDO
INICIAL TIEMPO ACTIVO T1 TIEMPO INACTIVO T2
RS1A11 12 V CC Tiempo
activo
0,1-102,3 s en
incrementos de 0,1 s
0,1-102,3 s en
incrementos de 0,1 s RS4A22 120 V CA Tiempo
activo
0,1-102,3 min en
incrementos de 0,1 m
0,1-102,3 min en
incrementos de 0,1 m
RS2B44 24 V CA Tiempo
inactivo
1-1023 horas en
incrementos de 1 hora
1-1023 horas en
incrementos de 1 hora RS4A24 120 V CA Tiempo
activo
0,1-102,3 min en
incrementos de 0,1 m
1-1023 horas en
incrementos de 1 hora
RS4A11 120 V CA Tiempo
activo
0,1-102,3 s en
incrementos de 0,1 s
0,1-102,3 s en
incrementos de 0,1 s RS4A33 120 V CA Tiempo
activo
1-1023 min en
incrementos de
1 min
1-1023 min en
incrementos de
1 min
RS4A12 120 V CA Tiempo
activo
0,1-102,3 s en
incrementos de 0,1 s
0,1-102,3 min en
incrementos de 0,1 m RS4B12 120 V CA Tiempo
inactivo
0,1-102,3 s en
incrementos de 0,1 s
0,1-102,3 min en
incrementos de 0,1 m
RS4A13 120 V CA Tiempo
activo
0,1-102,3 s en
incrementos de 0,1 s
1-1023 min en
incrementos de 1 min RS6A13 230 V CA Tiempo
activo
0,1-102,3 s en
incrementos de 0,1 s
1-1023 min en
incrementos de 1 min
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 17.
©2018 Controladores y Relevadores de Protección de Littelfuse 409
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/rs
SERIE RS
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Funcionamiento por interruptor de ajuste
Funcionamiento por interruptor de ajuste
RETARDO DE TIEMPO
0,1…102,3
APAGAR ENCENDIDO APAGAR ENCENDIDO
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3
Diagramas de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango* 0,1-102,3 s en incrementos de 0,1 s
0,1-102,3 min en incrementos de 0,1 min
1-1023 min en incrementos de 1 m
1-1023 h en incrementos de 1 h
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Exactitud del ajuste ≤ ± 2 % o 20 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12, o 24 V CC; 24, 120 o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CA/
Voltaje de onda 50/60 Hz/≤ ± 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 1 W
Salida
Tipo Estado sólido
Corriente de carga máxima corriente uniforme de 1 A,
corriente de inserción de 10 A a 60 °C
Corriente de filtración
de estado INACTIVO CA ≅ 5 mA a 230 V CA; CC ≅ 1 mA
Caída de voltaje CA ≅ 2,5 V a 1 A; CC ≅ 1 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie de
montaje
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 76,7 mm (3"); A 50,8 mm (2");
P 38,1 mm (1,5")
Terminación Terminales de conector rápido macho
(6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
*Para aplicaciones con certificación CE, la alimentación eléctrica debe aislarse de la unidad en el momento de
cambiar la posición del interruptor.
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD2 = Retardo de
tiempo
R = Restablecer
RECIRCULAR (TIEMPO DE
INACTIVIDAD INICIAL)
RECIRCULACIÓN (ACTIVO
EN TIEMPO INICIAL)
12 RELEVADORES DE RETARDO DE TIEMPO
410 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/tdr
Descripción
La serie TDR de relevadores de retardo de tiempo consta de un sistema
de circuitos digitales y una salida de relevador de 10 A, aislada. Los
retardos de tiempo ACTIVO e INACTIVO son seleccionados a través
de dos interruptores binarios de 10 posiciones, que permiten que la
configuración del retardo deseado sea precisa en cada momento.
Funcionamiento (Recirculación - tiempo de ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el LED verde se ilumina, el
relevador de salida se energiza, el LED rojo se ilumina y se inicia el
tiempo de ACTIVIDAD T1. Cuando finaliza el tiempo ACTIVO, el relevador
de salida se desenergiza, el LED rojo se DESACTIVA y se inicia el tiempo
INACTIVO T2. Cuando finaliza el tiempo INACTIVO, el relevador de salida
se energiza y se repite el ciclo tantas veces como sea aplicado el voltaje
de entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
primer retardo.
Funcionamiento (Recirculación - tiempo de INACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el LED verde se ilumina, se inicia
el tiempo de INACTIVIDAD T1, y la carga se DESACTIVA. Al finalizar el
tiempo INACTIVO, se inicia el tiempo ACTIVO T2, la carga se energiza,
y el LED rojo se ilumina. Cuando finaliza el tiempo ACTIVO, la carga se
desenergiza y el LED rojo se DESACTIVA. El ciclo se repite hasta que se
aísle el voltaje.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y la secuencia al tiempo INACTIVO.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Configuración del retardo de
tiempo ACTIVO e INACTIVO El ajuste independiente brinda una mayor flexibilidad
3 rangos de tiempo
disponibles (0,1 s a 2,8 h) Versatilidad para utilizarse en la diversas aplicaciones
Basado en microcontrolador
Exactitud de repetición +/ - 0,1 % o 20 ms, lo que sea
mayor; exactitud de ajuste +/ - 2 % o 50 ms, lo que sea
mayor
Ajuste de interruptor DIP Brinda exactitud de ajuste del tiempo inicial
Contactos de salida aislados Permite controlar las cargas para voltajes de CA o CC
Indicación LED
(ciertos modelos)
Proporciona indicaciones visuales sobre el estado del
relevador
Salida de relevador, relevador para retardo
de tiempo de recirculación
Diagrama de conexiones
L1 N/L2
Los contactos del relevador están aislados
SERIE TDR
Información para pedir
MODELO VOLTAJE DE ENTRADA LED SECUENCIA TIEMPO ACTIVO (SEGUNDOS) TIEMPO INACTIVO (SEGUNDOS)
TDR1A22 12 V CC Tiempo de ACTIVIDAD inicial 1-1023 en incrementos de 1 s 1-1023 en incrementos de 1 s
TDR2A23 24 V CA X Tiempo de ACTIVIDAD inicial 1-1023 en incrementos de 1 s 10-10230 en incrementos de 10 s
TDR4A11 120 V CA X Tiempo de ACTIVIDAD inicial 0,1-102,3 en incrementos de 0,1 s 0,1-102,3 en incrementos de 0,1 s
TDR4A12 120 V CA X Tiempo de ACTIVIDAD inicial 0,1-102,3 en incrementos de 0,1 s 1-1023 en incrementos de 1 s
TDR4A13 120 V CA X Tiempo de ACTIVIDAD inicial 0,1-102,3 en incrementos de 0,1 s 10-10230 en incrementos de 10 s
TDR4A22 120 V CA X Tiempo de ACTIVIDAD inicial 1-1023 en incrementos de 1 s 1-1023 en incrementos de 1 s
TDR4A23 120 V CA X Tiempo de ACTIVIDAD inicial 1-1023 en incrementos de 1 s 10-10230 en incrementos de 10 s
TDR4A33 120 V CA X Tiempo de ACTIVIDAD inicial 10-10230 en incrementos de 10 s 10-10230 en incrementos de 10 s
TDR4B22 120 V CA X Tiempo de INACTIVIDAD inicial 1-1023 en incrementos de 1 s 1-1023 en incrementos de 1 s
TDR4B23 120 V CA X Tiempo de INACTIVIDAD inicial 1-1023 en incrementos de 1 s 10-10230 en incrementos de 10 s
TDR6A22 230 V CA X Tiempo de ACTIVIDAD inicial 1-1023 en incrementos de 1 s 1-1023 en incrementos de 1 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para obtener un producto personalizado
8 PINES
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 23.
©2018 Controladores y Relevadores de Protección de Littelfuse 411
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tdr
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Clasificación nominal 10 A a 300 V CA
Montaje de superficie con dos tornillos o anillos de
presión n.º 6 (M 3.5 x 0.6) en riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Abrazaderas de presión PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilizar con conector octal NDS-8. Se
venden por pares.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Funcionamiento por interruptor binario
APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3 S 544 S 3000 S
0,1…102,3 1…1023 10…10.230
1
2
4
8
16
32
64
128
256
512
10
20
40
80
160
320
640
1280
2560
5120
**Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada de la unidad en el momento
de cambiar la posición del interruptor.
Diagrama de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos digital integrado
Rango** 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
10-10 230 s en incrementos de 10 s
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Exactitud del ajuste ± 2 % o 50 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 50 ms
Tiempo de recirculación ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ± 5 %
Entrada
Voltaje 12, 24/28, o 110 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110-230 V CA/CC -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/<=10 %
Consumo de energía ≤ 3,25 W
Indicador LED de entrada Verde, se enciende al aplicar el voltaje de
entrada
Salida
Tipo Relevador electromecánico
Forma DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 106
Máx. Voltaje de conmutación 250 V CA
Indicador LED de relevador Rojo, se enciende cuando el relevador de
salida se energiza
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Conexión por puerto
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 65 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
SERIE TDR
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD2 = Retardo de
tiempo
R = Restablecer
RECIRCULACIÓN
(ACTIVO EN TIEMPO INICIAL)
12 RELEVADORES DE RETARDO DE TIEMPO
412 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/thd3c42a0
THD3C42A0
Descripción
El THD3C42A0 combina sistemas de circuitos de temporización
precisos con conmutación de estado sólido de alta potencia. Puede
conmutar motores, luces y calentadores directamente sin un contactor.
El THD3C42A0 tiene retardos de tiempo activo e inactivo iguales. Un
solo RT ajusta ambos retardos de tiempo. Puede reducir los costos
por componente y mano de obra, y aumentar la fiabilidad con estos
temporizadores pequeños y fáciles de utilizar de Digi-Power.
Funcionamiento (Recirculación - tiempo de ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T1. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como se aplique el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece el
relevador de salida y los retardos de tiempo, y regresa la secuencia al
tiempo ACTIVO T1.
Funcionamiento (Recirculación - tiempo de INACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, se inicia el tiempo de INACTIVIDAD
T2. Cuando finaliza el tiempo de INACTIVIDAD, se inicia el tiempo de
ACTIVIDAD T1 y la carga se energiza. Cuando finaliza el T1, se inicia el T2 y
la carga se desenergiza. Este ciclo se repite hasta que se aísle el voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece el
relevador de salida y la secuencia al tiempo INACTIVO T2.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 1 %
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes originales
y reduce los costos por componente y mano de obra
Corrientes de carga altas
hasta de 20 A y de 200 A en
corriente de inserción
Permite un funcionamiento directo de motores, luces y
calentadores sin un contactor
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Superficie de montaje
metalizada
Facilita la transferencia de calor en aplicaciones de
corriente alta
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = Carga
S1 = Interruptor de inicio para
corriente baja opcional
RT se incluye cuando se pide
un ajuste externo.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
©2018 Controladores y Relevadores de Protección de Littelfuse 413
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/www.littelfuse.com/thd3c42a0
THD3C42A0
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Ajuste El resistor variable único cambia los tiempos
activo e inactivo igualmente
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Corriente de carga máxima Corriente Corriente
uniforme de inserción**
20 A 200 A
Corriente de carga mínima 100 mA
Caída de voltaje ≅ 2,5 V a corriente nominal
Corriente de filtración
de estado INACTIVO ≅ 5 mA a 230 V CA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje ** Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
**Debe atornillarse a una superficie metálica utilizando el disipador de calor compuesto que se incluye. La
temperatura máxima de la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
Diagramas de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD2 = Retardo de
tiempo
R = Restablecer
RECIRCULAR (TIEMPO
DE INACTIVIDAD INICIAL)
RECIRCULACIÓN
(ACTIVO EN TIEMPO INICIAL)
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
414 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/tsd3411s
TSD3411S
L1 N/L2
Temporizador de recirculación
Descripción
El TSD3411S es un temporizador de recirculación ACTIVO/INACTIVO
de estado sólido donde el tiempo activo es igual al tiempo inactivo. Al
cambiar el retardo de tiempo por el RT, también se cambian los periodos
ACTIVO e INACTIVO. La serie TSD está diseñada para aplicaciones
industriales y comerciales más exigentes donde se requiere un mayor
rendimiento y tamaño compacto. La calibración de fábrica para retardos
de tiempo fijos está dentro del 1 % del retardo de tiempo objetivo. La
exactitud de repetición, en condiciones estables, es del 0,1 % del retardo
de tiempo. El TSD3411S es apto para operar en un extenso rango de
temperatura. Disponible con retardos de tiempo de 0,1 s a 100 horas.
El relevador de salida tiene clasificación nominal uniforme de 1 A y de
corriente de inserción de 10 A. Los módulos son totalmente de estado
sólido y están encapsulados para proteger el sistema de circuitos
electrónico.
Funcionamiento (Luces intermitentes de recirculación - tiempo de
ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T1. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como se aplique el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece el retardo
de salida y de tiempo, y regresa la secuencia al tiempo ACTIVO T1.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,1 %,
+/ -1 % de exactitud del retardo de tiempo
Rango de temperatura
extendido
Clasificado para temperatura de funcionamiento de 75 °C y
compatibilidad con aplicaciones de calor extremo.
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, y corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Diagrama de conexiones
RT se incluye cuando se
pide un ajuste externo.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in) son
fabricados con un tonel aislador para brindar resistencia
a la deformación.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 415
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tsd3411s
Resistencia externa vs. Retardo de tiempo
Diagrama de funciones
FLASHER (ON FIRST)
El Tiempo ACTIVO más el tiempo INACTIVO son iguales a un
parpadeo completo.
TSD3411S
Especificaciones
Retardo de tiempo
Rango 0,1 s-100 h en 7 rangos ajustables
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 1 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ±1%
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Corriente de carga máxima corriente uniforme de 1 A,
corriente de inserción de 10 A a 60 °C
Corriente de filtración
de estado Inactivo ≅ 5 mA a 230 V CA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
T1 ≅ T2
R = Restablecer
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos, minutos u horas
LUZ INTERMITENTE
(ACTIVA EN TIEMPO INICIAL)
y y y
y
12 RELEVADORES DE RETARDO DE TIEMPO
416 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Recircular
www.littelfuse.com/tsdr
SERIE TSDR
Descripción
La serie TSDR es un módulo de temporización para recirculación
ACTIVO/INACTIVO o INACTIVO/ACTIVO diseñado para controlar bombas
de medición, válvulas para la industria química, luces intermitentes o
utilizarla en aplicaciones de ciclo experimental o de ahorro de energía.
La serie TSDR está diseñada para aplicaciones industriales y comerciales
más exigentes donde se requiere un mayor rendimiento y tamaño
compacto. La calibración de fábrica para los retardos de tiempo fijos
es de < ± 5 %. La exactitud de repetición, en condiciones estables,
es del 0,5 % del retardo de tiempo. La serie TSDR es apta para operar
en un extenso rango de temperatura. Retardos de tiempo de 0,1 s a
1000 min. El relevador de salida tiene clasificación nominal uniforme de
1 A y de corriente de inserción de 10 A. Los módulos son totalmente de
estado sólido y están encapsulados para proteger el sistema de circuitos
electrónico.
Funcionamiento (Recirculación - tiempo de ACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T1. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como se aplique el voltaje de entrada.
Restablecimiento: al aislar el voltaje de entrada se restablece el retardo
de salida y de tiempo, y regresa la secuencia al tiempo ACTIVO T1.
Funcionamiento (Recirculación - tiempo de INACTIVIDAD inicial)
Cuando se aplica el voltaje de entrada, se inicia el tiempo de
INACTIVIDAD T2. Cuando finaliza el tiempo de INACTIVIDAD, se inicia el
tiempo de ACTIVIDAD T1 y la carga se energiza. Cuando finaliza el T1, se
inicia el T2 y la carga se desenergiza. Este ciclo se repite hasta que se
aísle el voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece el
relevador de salida y la secuencia al tiempo INACTIVO T2.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %, Calibración de
fábrica +/ - 5 %
Relevador de salida de estado
sólido de corriente uniforme
de 1 A, o corriente de inserción
de 10 A
Proporciona 100 millones de operaciones en
condiciones típicas
Estado completamente sólido y
encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni
desgaste prematuro y unidad encapsulada para proteger
contra choques eléctricos, vibración y humedad.
Amplio rango de temperatura
de funcionamiento:
-40 °C a 75 °C
Fiable en aplicaciones industriales y
comerciales de alto rendimiento
Diseño compacto y de bajo
costo que mide 50,8 mm (2 in)
Brinda flexibilidad para aplicaciones de fabricantes
originales
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
Diagrama de conexiones
L1 N/L2
V = Voltaje
L = Carga
RT se incluye cuando se pide
un ajuste externo.
Solo se incluye un ajuste
integrado, o terminales 4 y 5,
en las unidades ajustables.
Información para pedir
MODELO VOLTAJE DE
ENTRADA AJUSTABLE TIEMPO
ACTIVO T1
RETARDO
INICIAL
TIEMPO
INACTIVO
T2
TSDR215SB18M 24 V CA Fijo 5 s Tiempo
inactivo 18 m
TSDR415SB18M 120 V CA Fijo 5 s Tiempo
inactivo 18 m
TSDR4412SA1 120 V CA
Tiempo activo
fijo, inactivo
externo
12 s Tiempo
activo 1-100 s
TSDR442MA2 120 V CA
Tiempo activo
fijo, inactivo
externo
2 m Tiempo
activo 10-1000 s
TSDR4430SA2 120 V CA
Tiempo activo
fijo, inactivo
externo
30 s Tiempo
activo 10-1000 s
TSDR610.2SA0.2S 230 V CA Fijo 0,2 s Tiempo
activo 0,2 s
TSDR6110SA30S 230 V CA Fijo 10 s Tiempo
activo 30 s
TSDR612.5SA4.5S 230 V CA Fijo 2,5 s Tiempo
activo 4,5 s
TSDR615SB18M 230 V CA Fijo 5 s Tiempo
inactivo 18 m
TSDR6412SA1 230 V CA
Tiempo activo
fijo, inactivo
externo
12 s Tiempo
activo 1-100 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 417
Relevadores de retardo de tiempo
Dedicado — Recircular Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tsdr
SERIE TSDR
Accesorios
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagramas de funciones
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura voltaje ≤ ± 5 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Corriente de carga máxima corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de filtración
de estado Inactivo ≅ 5 mA a 230 V CA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie de
montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
Temperatura -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD2 = Retardo de
tiempo
R = Restablecer
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
RECIRCULAR
(TIEMPO DE INACTIVIDAD INICIAL)
RECIRCULACIÓN
(ACTIVO EN TIEMPO INICIAL)
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
418 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Porcentaje
www.littelfuse.com/pthf4900dk
PTHF4900DK
L1 N/L2
V = Voltaje
L = Carga
S1 = Interruptor de inicio
para corriente baja
opcional
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
RT = 100 KΩ
RT se incluye cuando se pide
un ajuste externo.
Diagrama de conexiones
Descripción
El PTHF4900DK puede utilizarse en diversas aplicaciones desde
medición para la industria química hasta sistemas de regulación de
temperatura y gestión de la energía. El amplio rango de ajuste entre 1
y 99 % brinda porcentajes exactos de control en un extenso periodo
de ciclo fijo desde fábrica. Al ser instalado en una superficie metálica,
puede utilizarse para controlar solenoides, contactos, relevadores,
o luces, hasta de 20 A de corriente interna, y 200 A de corriente de
inserción. El PTHF4900DK es el sustituto recomendado para la Serie PT.
Funcionamiento (Porcentaje)
Cuando se aplica el voltaje de entrada, el relevador de salida se energiza
y se inicia el tiempo ACTIVO T1. Cuando finaliza el tiempo ACTIVO, la
salida se desenergiza y se inicia el tiempo INACTIVO T2. Cuando finaliza
el tiempo INACTIVO, el relevador de salida se energiza y se repite el
ciclo tantas veces como se aplique el voltaje de entrada. Al aumentar el
tiempo ACTIVO se disminuye el tiempo INACTIVO. El periodo de ciclo
total es igual al tiempo ACTIVO más el tiempo INACTIVO. El periodo de
ciclo total es fijo desde fábrica. El rango de tiempo ACTIVO es de 1 a
99 % del periodo de ciclo.
Restablecimiento: al aislar el voltaje de entrada se restablece el retardo
de salida y de tiempo, y regresa la secuencia al tiempo ACTIVO T1.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %,
Calibración de fábrica +/ - 5 %
Control del porcentaje
de recirculación ACTIVO/
INACTIVO 1 a 99 %
Control exacto en un amplio periodo de ciclo
fijo desde fábrica
Diseño compacto y de bajo
costo
Brinda flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano de
obra
Corrientes de carga altas
hasta de 20 A y de 200 A en
corriente de inserción
Permite un funcionamiento directo de motores, luces y
calentadores sin un contactor
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Superficie de montaje
metalizada
Facilita la transferencia de calor en aplicaciones de
corriente alta
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
©2018 Controladores y Relevadores de Protección de Littelfuse 419
Relevadores de retardo de tiempo
Dedicado — Porcentaje Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pthf4900dk
PTHF4900DK
Especificaciones
Retardo de tiempo
Tipo Perilla integrada o externa
Rango/Externo
Resistencia de ajuste Ajustable de 1 a 99 %/RT = 100 kΩ
Periodo de ciclo Fijo de 10 s a 1000 m
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia del periodo de ciclo
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 120 o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Corrientes de carga máxima Corriente Corriente
uniforme de inserción*
1 A 10 A
Caída de voltaje ≅ 2,5 V a corriente nominal
Corriente de filtración
de estado INACTIVO ≅ 5 mA a 230 V CA
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje * Montaje en superficie con un tornillo n.º 10
(M5 x 0,8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Unidades de 6, 10, y 20 A: ≅ 111 g (3,9 oz)
*Las unidades con clasificación nominal ≥ 6 A deben ser atornilladas a una superficie metálica utilizando el
disipador de calor compuesto.
La temperatura máxima en la superficie de montaje es de 90 °C. Corriente de inserción: no repetitiva por 16 ms.
Diagrama de funciones
PERCENTAGE V = Input Voltage
CP = Cycle Period
L = Load
T1 = ON Time
T2 = OFF Time
R = Reset
L
CP CP CP V = Voltaje
CP = Periodo de ciclo
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
R = Restablecer
PORCENTAJE
12 RELEVADORES DE RETARDO DE TIEMPO
420 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados Dedicado — Función dual | Respuestas entregadas
www.littelfuse.com/tdmb
SERIE TDMB
Retardo de encendido/Retardo de apagado
L1 N/L2
L1 N/L2
SPDT OCTAL DE 8 PINES
DPDT DE 11 PINES
(N/P que terminan con D)
Diagrama de conexiones
Descripción
El TDMB combina funciones de retardo de encendido y retardo de
apagado en un solo paquete de conexión. La selección del periodo de
tiempo se logra mediante interruptores duales, uno para el retardo activo
y otro para el retardo inactivo. Opciones de relevadores de salida SPDT
o DPDT aislados, con capacidad de conmutación de 10 A.
Funcionamiento (Retardo de encendido/Retardo de apagado)
Se debe aplicar el voltaje de entrada en todo momento. El relevador
de salida es desenergizado. Cuando se cierra el interruptor de inicio, el
LED verde se enciende y comienza el retardo de tiempo (T1) del retardo
de encendido. Cuando finaliza el T1, el relevador de salida se energiza
y el LED rojo se enciende. Cuando el interruptor de inicio se abre, el
LED verde se apaga y comienza el retardo de tiempo (T2) del retardo
de apagado. Cuando finaliza el T2, el relevador de salida se energiza y el
LED rojo se apaga.
Restablecimiento: al aislar el voltaje de entrada se restablece la salida y
el retardo de tiempo. Al abrir el interruptor de inicio durante el retardo de
encendido, se restablece el T1. Cuando se cierra el interruptor de inicio
durante el retardo de apagado, se restablece el T2.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos digital Exactitud de repetición +/ - 0,1 %,
Exactitud de ajuste +/ - 2 %
Contactos de salida SPDT o
DPDT aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Seleccionable por el usuario
retardo de encendido y
retardo de apagado
Para mayor flexibilidad, las configuraciones de
temporización son ajustables
de manera independiente
Conexión por conector octal
estándar industrial Elimina la necesidad de utilizar conectores especiales
Indicación LED Proporciona indicaciones visuales del estado del interruptor
de inicio, la temporización y la salida de relevador
Ajuste por interruptor DIP Brinda exactitud de ajuste del tiempo inicial
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje en superficie con dos tornillos o
anillos de presión n.º 6 en un riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Conector NDS-11 de 11 pines
Montaje en riel DIN o superficie de 11 pines y 35 mm.
Montaje en superficie con dos tornillos o anillos
de presión n.º 6 en un riel DIN de 35 mm. Utilice
abrazaderas de presión PSC11.
Abrazaderas de presión PSC11 o PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilice la Serie PSC8 con conectores octales
NDS-8 o la Serie PSC11 con conectores NDS-11. Se
vende en juegos de dos unidades.
Información para pedir
MODELO VOLTAJE DE
ENTRADA
RETARDO DE
ENCENDIDO
RETARDO A LA
CONEXIÓN
TIPO DE
CONECTOR
TDMB411 120 V CA 0,1-102,3 s en
incrementos de 0,1 s
0,1-102,3 s en
incrementos de 0,1 s
SPDT octal
(8 pines)
TDMB413D 120 V CA 0,1-102,3 s en
incrementos de 0,1 s
10-10 230 s en
incrementos de 10 s
DPDT de
11 pines
TDMB422 120 V CA 1-1023 s en
incrementos de 1 s
1-1023 s en
incrementos de 1 s
SPDT octal
(8 pines)
TDMB422D 120 V CA 1-1023 s en
incrementos de 1 s
1-1023 s en
incrementos de 1 s
DPDT de
11 pines
TDMB622 230 V CA 1-1023 s en
incrementos de 1 s
1-1023 s en
incrementos de 1 s
SPDT octal
(8 pines)
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
V = Voltaje
S1 = Interruptor de inicio o termostato
Los contactos del relevador están
aislados.
8 PINES
11 PINES
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 23.
©2018 Controladores y Relevadores de Protección de Littelfuse 421
Relevadores de retardo de tiempo
Dedicado — Función dual Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tdmb
SERIE TDMB
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango** 0,1-102,3 s en incrementos de 0,1 s
1-1023 s en incrementos de 1 s
10-10 230 s en incrementos de 10 s
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Exactitud del ajuste ≤ ± 2 % o 50 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Indicador LED de control Verde, se enciende al cerrar el interruptor
de inicio
Entrada
Voltaje 12 o 24 V CC; 24, 120, o 230 V CA;
24-240 V CA/CC; 12-48 V CC
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
110-230 V CA/CC -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Relevador electromecánico
Forma SPDT o DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 230 V CA
Duración Mecánica - 1 x 107
; Eléctrica - 1 x 105
Máx. Voltaje de conmutación 250 V CA
Indicador LED de relevador Rojo, se enciende cuando el relevador se
energiza (no incluido en unidades de 12 V CC)
Protección
Resistencia de aislamiento ≥ 100 M
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Mecánica
Montaje Conexión por puerto
Dimensiones H 81,3 mm (3,2"); A 60,7 mm (2,4");
P 45,2 mm (1,8")
Terminación Conector octal de 8 pines, y conector magnal
de 11 pines
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-30 °C a 85 °C
Peso ≅ 170 g (6 oz)
**Para aplicaciones con certificación CE, la alimentación eléctrica debe ser aislada de la unidad en el momento
de cambiar la posición del interruptor.
Funcionamiento por interruptor binario Digi-Set
APAGAR ENCENDIDO APAGAR ENCENDIDO APAGAR ENCENDIDO
0,1
0,2
0,4
0,8
1,6
3,2
6,4
12,8
25,6
51,2
6,3 S 544 S 3000 S
0,1…102,3 1…1023 10…10.230
1
2
4
8
16
32
64
128
256
512
10
20
40
80
160
320
640
1280
2560
5120
Diagrama de funciones
DELAY-ON-MAKE / DELAY-ON-BREAK V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
= Undefined
Time
V = Voltaje
S1 = Conmutador de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD2 = Retardo de
tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO/
RETARDO DE APAGADO
12 RELEVADORES DE RETARDO DE TIEMPO
422 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados Dedicado — Función dual | Respuestas entregadas
www.littelfuse.com/esd52233
ESD52233
Retardo de encendido/Intervalo
Diagrama de conexiones
Descripción
La serie ESD5 es un temporizador de intervalo con retardo, de estado
sólido y de alta precisión. Ofrece una salida para corriente uniforme de
1 A y corriente de inserción de 10 A disponible con retardos de tiempo
fijos o ajustables de 0,1 s a 1000 min en 6 rangos. Voltajes de entrada
de 24, 120, o 230 V CA disponibles. Su encapsulación brinda protección
contra impactos y vibraciones. Las opciones de ajuste son fijas desde
fábrica, integradas o de ajuste externo. La exactitud de repetición, en
condiciones estables, es del 0,1 %. La calibración de fábrica para el
retardo de tiempo es de ± 5 %.
Funcionamiento (Intervalo con retardo)
Cuando se aplica el voltaje de entrada, el retardo de encendido T1 se
inicia y la salida permanece desenergizada. Cuando finaliza el retardo, la
salida se energiza y se inicia el retardo de intervalo T2. Cuando finaliza el
periodo de retardo de intervalo, la salida se desenergiza.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el relevador de salida y los retardos de tiempo, y regresa la secuencia al
primer retardo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Diseño compacto y de bajo
costo que mide 50,8 mm
(2 in)
Brinda flexibilidad para aplicaciones de fabricantes
originales y reduce los costos por componente y mano de
obra
Basado en microcontrolador Exactitud de repetición +/ - 0,1 %,
Calibración de fábrica +/ - 5 %
Relevador de salida de
estado sólido de corriente
uniforme de 1 A, o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
L1 N/L2
V = Voltaje
L = Carga
T1 = Tiempo de retardo de
encendido
T2 = Tiempo de retardo de
intervalo
El RT es el componente de
ajuste externo.
NOTA: Los terminales 4,5 o 7,
8 se incluyen al pedir el ajuste
externo. Se incluye una perilla
cuando se pide el ajuste
integrado.
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 423
Relevadores de retardo de tiempo
Dedicado — Función dual Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/esd52233
ESD52233
Resistencia externa vs. Retardo de tiempo
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Diagrama de funciones
DELAY-ON-MAKE / INTERVAL V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
Especificaciones
Retardo de tiempo
Rango 0,1 s-1000 min en 6 rangos ajustables o fijos
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 5 %
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 24 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Consumo de energía ≤ 2 VA
Salida
Tipo Estado sólido
Clasificación nominal Corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Corriente de filtración
de estado INACTIVO ≅ 5 mA a 230 V CA
Caída de voltaje ≅ 2,5 V a 1 A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho
(6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 75 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD2 = Retardo de
tiempo
R = Restablecer
RETARDO DE ENCENDIDO/INTERVALO
Este gráfico aplica para números de parte ajustables externamente.
El retardo de tiempo es ajustable sobre el rango de retardo de tiempo seleccionado variando
la resistencia en los terminales RT; a medida que aumenta la resistencia, el retardo de tiempo
disminuye.
Cuando seleccione un RT externo, asigne las tolerancias del tiempo y el RT para el ajuste de rango
de tiempo completo.
Ejemplos: retardo de tiempo ajustable de 1-50 s; seleccione el rango de retardo de tiempo y un
RT de 1-50 kΩ. Para 1-100 s, utilice un RT de 100 kΩ
Rangos de
retardo
de tiempo
RT
= Resistor de temporización externo en kΩ
En segundos o minutos
y y y
12 RELEVADORES DE RETARDO DE TIEMPO
424 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados Dedicado — Función dual | Respuestas entregadas
www.littelfuse.com/krpd
Especificaciones
Diagrama de conexiones
L1 N/L2
V = Voltaje
C = Sonda común, contacto de
transferencia
NC = Normalmente cerrada
NO = Normalmente abierta
S1 = Conmutador de inicio
UTL = Carga no medida
En las unidades ajustables se incluye
una perilla, o terminales RT para ajuste
externo. La carga no medida es opcional.
S1 no se utiliza en algunas funciones.
SERIE KRPD
Descripción
La serie KRPD es un relevador de retardo de tiempo programado
desde fábrica disponible en 12 funciones duales estándar. Los retardos
de tiempo pueden tener ajuste fijo desde fábrica, integrado, o de
ajuste externo, o una combinación de fijo y ajustable. Los contactos
del relevador de salida SPDT ofrecen una clasificación nominal de
10 A completa y aislamiento total. Su circuito de temporización por
microcontrolador brinda una excelente estabilidad y exactitud de
repetición. Su encapsulación protege contra impactos, vibración, y
humedad. La serie KRPD es una opción para aplicaciones de fabricantes
originales que requieren aislamiento, duración, fiabilidad y tamaño
compacto
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,5 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Contactos de salida SPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Encapsulado Encapsulado para proteger contra impactos, vibración y
humedad
Accesorios
P1004-95, P1004-95-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo remoto.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Temporizador de salida de relevador
Información para pedir
MODELO ENTRADA AJUSTE 1 RETARDO DE TIEMPO 1 AJUSTE 2 RETARDO DE TIEMPO 2 FUNCIONES
KRPD215S190SMB 24 V CA Fijo 5 s Fijo 90 s Retardo de encendido/Retardo de apagado
KRPD417M113MRXD 120 V CA Fijo 7 m Fijo 13 m Recirculación/Tiempo de inactividad inicial
KRPDA175S130SMI 24-240 V CA/CC Fijo 75 s Fijo 30 s Retardo de encendido/Intervalo
KRPDA2129RXE 24-240 V CA/CC Integrado 0,1-10 s Integrado 10-1000 h Recirculación
KRPDD2121MB 12-48 V CC Integrado 0,1-10 s Integrado 0,1-10 s Retardo de encendido/Retardo de apagado
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 425
Relevadores de retardo de tiempo
Dedicado — Función dual Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/krpd
SERIE KRPD
Corriente de salida/Temperatura ambiente
Diagramas de funciones
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos por microcontrolador
Rango 0,1 s-1000 h en 9 rangos ajustables o fijos
(hasta 999)
Exactitud de repetición ± 0,5 % o 20 ms, lo que sea mayor
Tolerancia
(Calibración de fábrica) ≤ ± 2 %
Tiempo de restablecimiento ≤ 150 ms
Tiempo de inicio ≤ 40 ms; 750 operaciones por minuto
Retardo de tiempo vs.
temperatura y voltaje ≤ ±2%
Entrada
Voltaje 12-48 V CC; 24-240 V CA/CC
Tolerancia
12-48 V CC -15 % - 20 %
24-240 V CA/CC -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 2 VA; CC ≤ 2 W
Salida
Tipo Contactos de relevador aislados
Forma SPDT
Clasificación nominal (a 40 °C) 10 A resistiva a 125 V CA
5 A resistiva a 230 V CA y 28 V CC
1/4 HP a 125 V CA
Máx. Voltaje de conmutación 250 V CA
Duración (Operaciones) Mecánica - 1 x 107
; Eléctrica - 1 x 105
Protección
Sistema de circuitos Encapsulado
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada
y salida
Resistencia de aislamiento ≥ 100 MΩ
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho 6,35 mm
(0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 74 g (2,6 oz)
DELAY-ON-MAKE / DELAY-ON-BREAK V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
= Undefined
Time
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
ACCUMULATIVE
DELAY-ON-MAKE / INTERVAL
DELAY-ON-MAKE / INTERVAL V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
V = Voltaje
S1 = Conmutador de inicio
NO = Contactor
normalmente abierto
NC = Contactor
normalmente cerrado
TD1, TD2 = Retardo de
tiempo
R = Restablecer
= Tiempo no definido
RETARDO DE
ENCENDIDO/INTERVALO
RECIRCULAR (TIEMPO DE
INACTIVDAD INICIAL)
RECIRCULACIÓN (ACTIVO
EN TIEMPO INICIAL)
ACUMULATIVO RETARDO DE
ENCENDIDO/INTERVALO
RETARDO DE ENCENDIDO/
RETARDO DE APAGADO
12 RELEVADORES DE RETARDO DE TIEMPO
426 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — HVAC
www.littelfuse.com/ct
SERIE CT
L1 N
V = Voltaje
FR = Relevador de ventilador
FS = Interruptor de ventilador
CR = Relevador del compresor
THMS = Termostato de pared
Temporizador de Retardo de encendido/
Retardo de apagado
Descripción
La serie CT combina un temporizador de retardo de encendido y retardo
de apagado en una unidad y puede utilizarse para controlar retardos de
ventilación en calentadores o equipo de enfriamiento. El CT incluye un
circuito de derivación que le permite a la unidad operar con sistemas
de anticipador de enfriamiento ≥ 3000 Ω. Está diseñado para operar en
circuitos de control de 24 V CA. Se pueden combinar diversos módulos
de CT para brincar secuenciación activa de cualquier número de cargas
y secuenciación inactiva para las mismas cargas; como por ejemplo,
elementos de un calentador eléctrico.
Funcionamiento (Retardo de encendido/Retardo de apagado)
Calefacción por aire inyectado o aire acondicionado (tal como se
muestra en la imagen): cuando el termostato se cierra, el relevador
del compresor se energiza de inmediato. Al finalizar un retardo de
encendido fijo (T1), el relevador del ventilador se energiza. Cuando el
termostato se abre, el relevador del compresor es desenergizado y se
inicia el retardo de apagado. Al finalizar el retardo de apagado fijo (T2),
el relevador del ventilador es desenergizado. Si el termostato se cierra
nuevamente durante el retardo de apagado, el retardo de apagado será
restablecido y el relevador del ventilador permanecerá energizado. Si
el termostato se cierra al aplicarse el voltaje de entrada, el retardo de
encendido (T1) inicia normalmente.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece la
salida y los retardos de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Retardo de encendido y
retardo de apagado en
una unidad
Simplifica las conexiones y la instalación, y optimiza la
eficiencia de los sistemas de calefacción y enfriamiento
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Interconectividad con otros
módulos CT
Combina módulos para proporcionar secuenciación activa
de un número de cargas y secuenciación inactiva para las
mismas cargas
Accesorios
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Diagrama de conexiones
Información para pedir
MODELO RETARDO DE ENCENDIDO
(SEGUNDOS FIJOS)
RETARDO DE APAGADO
(SEGUNDOS FIJOS)
CT1S30 1 30
CT1S45 1 45
CT1S8 1 8
CT1S90 1 90
CT30S1 30 1
CT45S45 45 45
CT5S300 5 300
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 427
Relevadores de retardo de tiempo
Dedicado — HVAC Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ct
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Diagrama de funciones
DELAY-ON-MAKE
DELAY-ON-BREAK
SERIE CT
Especificaciones
Retardo de tiempo
Tipo Microcontrolador
Rango 1-600 s
Exactitud de repetición ± 5 %
Tolerancia
(Calibración de fábrica) ± 20 %
Tiempo de circulación ≤ 300 ms
Entrada
Voltaje 24 V CA
Tolerancia ± 15 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO
Clasificación nominal corriente uniforme de 0,75 A, corriente de
inserción de 5 A a 55 °C
Caída de voltaje ≅ 1,25 V
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 2000 V RMS en terminales para montaje en
superficie
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 70 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Termostato Resistor anticipador: ≥ 3000 Ω
V = Voltaje
FS = Interruptor de ventilador
FR = Relevador de ventilador
T1 = Retardo de encendido
T2 = Retardo de apagado
R = Restablecer
= Tiempo no definido
RETARDO DE ENCENDIDO
RETARDO DE APAGADO
12 RELEVADORES DE RETARDO DE TIEMPO
428 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — HVAC
www.littelfuse.com/t2d120a15m
T2D120A15M
Bloqueo
Diagrama de conexiones
Descripción
La serie T2D brinda protección contra ciclos cortos de compresores y
otros motores. Al finalizar cada funcionamiento, un relevador de bloqueo
previene el reinicio del compresor o motor hasta que se complete el
retardo. Los modelos de 24 V CA pueden utilizarse con termostatos que
incluyan un resistor anticipador para refrigeración. Pueden conectarse en
serie con la carga para un funcionamiento de retardo de encendido.
Funcionamiento (Bloqueo con encendido aleatorio)
Conexión n.º 1: cuando se aplica el voltaje de entrada, se inicia un
retardo de tiempo de encendido aleatorio.
Retardo por bloqueo: se debe aplicar el voltaje de entrada antes y
durante la temporización. Cuando el termostato o el interruptor de inicio
se abren, el relevador de salida se desenergiza y se inicia el retardo
de tiempo de bloqueo. Al finalizar el retardo de bloqueo, la salida se
energiza permitiendo que la carga se energice de inmediato cuando se
cierre el termostato o el interruptor de inicio.
Conexión n.º 2: al aplicar el voltaje de entrada y cerrar el interruptor
de inicio, se inicia el retardo de tiempo. Cuando finaliza el retardo de
tiempo, la salida se energiza y permanece energizada hasta que se aísle
la alimentación.
Restablecimiento: al aislar la alimentación se restablece el relevador de
salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Retardo de bloqueo Previene los ciclos rápidos de un compresor
Retardo de restablecimiento
aleatorio Previene el encendido con voltaje bajo
Sistema de circuitos
analógico Exactitud de repetición +/ - 1 %
Diseño compacto Brinda flexibilidad para aplicaciones de fabricantes
originales
Salida con corriente
uniforme de 1 A y corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Completamente
encapsulado y totalmente de
estado solido
Sin piezas móviles para arco eléctrico y desgaste a través
del tiempo y encapsulado para proteger contra choques
eléctricos, vibración y humedad
L1 N/L2
L1 N/L2
V = Voltaje
L = Carga
S1 = Interruptor de inicio o termostato
ENCENDIDO ALEATORIO CON BLOQUEO
RETARDO DE ENCENDIDO
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 429
Relevadores de retardo de tiempo
Dedicado — HVAC Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/t2d120a15m
T2D120A15M
Especificaciones
Entrada
Voltaje 120/230 V CA en 2 rangos
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Corriente de carga mínima 24 V CA-100 mA; 120/230 V CA-40 mA
Clasificación nominal Corriente uniforme de 1 A, corriente de
inserción de 10 A a 60 °C
Caída de voltaje ≅ 2,5 V a 1 A
Retardo de tiempo
Tiempo de inicio Luego de la temporización - 16 ms
Tipo Sistema de circuitos analógico
Retardos de bloqueo y
encendido aleatorio 1 s-100 min en 4 rangos ajustables o fijos
NOTA: los retardos de bloqueo y encendido aleatorio tienen el
mismo lapso de tiempo.
Tolerancia Ajustable: ± 30 %; fija desde fábrica: ± 30 %
Exactitud de repetición ± 1 % o 20 ms, lo que sea mayor
Tiempo de restablecimiento Luego de la temporización - ≤ 16 ms;
Durante la temporización - ≤ 200 ms
Protección
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Anticipador de enfriamiento
(solo unidades de 24 V CA)
Anticipador de enfriamiento
mínimo ≥ 3000 Ω
Diagrama de funciones
V = Voltage
S1 = Initiate Switch
L = Load (CR)
E = Ready
TD = Time Delay
R = Reset
RANDOM START
PLUS LOCKOUT
DELAY-ON-MAKE
L
L
E
E
V = Voltaje
S1 = Conmutador de inicio
L = Carga (CR)
E = Preparado
TD = Retardo de tiempo
R = Restablecer RETARDO DE ENCENDIDO
ENCENDIDO ALEATORIO
CON BLOQUEO
12 RELEVADORES DE RETARDO DE TIEMPO
430 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — HVAC
www.littelfuse.com/ta
SERIE TA
Bloqueo
Diagrama de conexiones
Descripción
La serie TA previene la recirculación rápida de un compresor. Un retardo
de bloqueo se activa cuando el termostato se abre o cuando hay una
pérdida del voltaje de entrada. Elimina eventos de fusibles fundidos o
interruptores automáticos activados ocasionados por un rotor bloqueado
durante un ciclo corto. El TA no permitirá que el compresor se encienda si
el voltaje de línea es bajo. Se eliminan las vibraciones en el relevador del
compresor. Debido al tiempo de inicio rápido, la oscilación del termostato
no se transmitirá a la bobina del relevador en el compresor. Un retardo de
30 s brinda protección contra la inversión de compresores de espiral.
Funcionamiento (Bloqueo)
Al cierre inicial del S1, el relevador del compresor se energiza de
inmediato. Cuando el S1 se abre o se interrumpe el voltaje de entrada,
se inicia un retardo de tiempo de bloqueo. Durante este retardo de
tiempo de bloqueo, el relevador del compresor no podrá ser energizado.
La protección contra voltaje bajo (caída de tensión) previene la
energización del compresor cuando el voltaje de línea es bajo.
Restablecimiento: el retardo de tiempo de bloqueo no podrá
restablecerse. Luego de cumplirse el retardo de tiempo, la unidad se
reinicia automáticamente.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Retardo de bloqueo
Previene el ciclo rápido de compresores y elimina
mantenimientos no deseados debido a fusibles fundidos o
interruptores automáticos activados por rotores bloqueados
durante el ciclo rápido
Protección contra inversión
para compresores de espiral Se aumenta la vida útil del equipo
Protección contra caídas de
voltaje
El temporizador impedirá que el compresor se encienda
durante condiciones de voltaje de línea bajo
Encapsulado Protege contra impactos, vibración y humedad
Relevador de salida de
estado sólido de 1 A
Sin piezas móviles para evitar arcos eléctricos y el
deterioro. Proporciona 100 millones de operaciones en
condiciones típicas
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Información para pedir
MODELO VOLTAJE DE ENTRADA RETARDO DE TIEMPO
TA12D1 12 V CC 1 min
TA12D2 12 V CC 2 m
TA24A0.5 24 V CA 30 s
TA24A3 24 V CA 3 m
TA24A5 24 V CA 5 m
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N
V = Voltaje
S1 = Interruptor de inicio,
contacto, o termostato
CR = Relevador de compresor
(carga)
CA = Anticipador de
enfriamiento opcional
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 431
Relevadores de retardo de tiempo
Dedicado — HVAC Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/ta
SERIE TA
Especificaciones
Entrada
Voltaje 12 o 24 V CC; 24 V CA
Frecuencia de línea CC 50/60 Hz
Impedancia 450 Ω (derivación de anticipador)
Salida
Corriente de carga mínima 75 mA
Corriente de carga máxima 1 A a 60 °C
Caída de voltaje ≤ 1,25 V
Retardo de tiempo
Tiempo de inicio ≅ 16 ms
Tiempo de bloqueo Fijo de 0,5; 1; 2; 3 o 5 m
Tolerancia -15 %-35 %
Protección
Sistema de circuitos Encapsulado
Protección contra voltaje bajo ≅ 20V: 24 V CA/CC; ≅ 9V: 12 V CC
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 70 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
Termostato
Resistor anticipador
para enfriamiento ≥ 1800 Ω
Diagrama de funciones
LOCKOUT
L
E
V = Voltage
S1 = Initiate Switch
L = Load (CR)
E = Ready
TD = Time Delay
R = Reset
V = Voltaje
S1 = Conmutador de inicio
L = Carga (CR)
E = Preparado
TD = Retardo de tiempo
R = Restablecer
BLOQUEO
12 RELEVADORES DE RETARDO DE TIEMPO
432 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — HVAC
www.littelfuse.com/tac1
SERIE TAC1
Retardo de encendido
Diagrama de conexiones
Descripción
La serie TAC1 fue diseñada para retardar el funcionamiento de un
relevador de compresor. Elimina la posibilidad de vibraciones del
relevador debido a fallas de onda intermedia en la salida. Se conecta en
serie con la bobina del relevador de carga y proporciona un retardo de
encendido cada vez que se aplica el voltaje de entrada. Puede utilizarse
para encendido aleatorio, ciclo anticortos, secuenciación y muchas
otras aplicaciones. Es una excelente opción para todos los equipos de
refrigeración y aire acondicionado.
Funcionamiento (Retardo de encendido)
Cuando se aplica el voltaje de entrada, se inicia el retardo de tiempo.
La salida se desenergiza antes y durante del retardo de tiempo.
Cuando finaliza el retardo de tiempo, la salida se energiza y permanece
energizada hasta que se aísle el voltaje de entrada.
Restablecimiento: Cuando se aísla el voltaje de entrada se restablece la
salida y el retardo de tiempo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos
analógico
Exactitud de repetición +/ - 2 %,
Calibración de fábrica +/ - 20 %
Corriente uniforme de 0,5 A y
corriente de inserción de
10 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Se conecta en serie con
la bobina del relevador de
carga
Diseño de control automático de protección que elimina
vibraciones en el contactor
Conforme con directriz
UL 873
Clasificación UL para equipo de refrigeración y aire
acondicionado
Completamente
encapsulado Protege contra impactos, vibración y humedad
Accesorios
P1004-XX, P1004-XX-X Versa-Pot
Potenciómetro industrial montable en panel,
recomendado para ajuste del retardo de tiempo
remoto.
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P0700-7 Versa-Knob
Diseñado para eje de 6,35 mm (0,25 in) Versa-Pot.
Acabado negro industrial semibrillante.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Información para pedir
MODELO VOLTAJE DE ENTRADA AJUSTE RETARDO DE TIEMPO
TAC1223 24 V CA Externo 2-180 s
TAC1411 120 V CA Fijo 1 s
TAC1412 120 V CA Fijo 2 s
TAC1413 120 V CA Fijo 3 s
TAC14164 120 V CA Fijo 64 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
L = Carga
La carga puede ser
conectada en los terminales
3 o 1.
RT se incluye cuando se
pide un ajuste externo.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 433
Relevadores de retardo de tiempo
Dedicado — HVAC Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tac1
SERIE TAC1
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Módulo de ajuste para conexión VTP(X)(X)
Montaje en módulos con terminales de ajuste en línea.
Clasificación nominal de 0,25 W a 55 °C. Disponible en
valores de resistencia de 5 kΩ a 5 MΩ
Tabla de selección para accesorios de ajuste para conexión VTP
Retardo de
tiempo
Número de
parte VTP
1 - 0,05-3 s
2- 0,5-60 s
3 - 2-180 s
4 - 5-600 s
VTP4B
VTP4F
VTP4J
VTP5N
Guía de selección
Megaohmios
Gráfico de selección de RT
Retardo de tiempo deseado*
Segundos
, , ,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,
* Cuando seleccione un RT externo, agregue al
menos 30% de tolerancia para la unidad y el RT.
Diagrama de funciones
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Especificaciones
Retardo de tiempo
Tipo Sistema de circuitos analógico
Rango 0,05-600 s en 4 rangos ajustables o fijos
Exactitud de repetición ± 2 %
Tolerancia
(Calibración de fábrica) ± 20 %
Tiempo de recirculación ≤ 20 ms después de la temporización, durante
temporización - 0,1 % del retardo de tiempo o
75 ms, lo que sea mayor
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 10 %
Entrada
Voltaje 24, 120, o 230 V CA
Tolerancia ± 20 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Forma NO, se abre durante la temporización
Clasificación nominal Corriente nominal uniforme de 0.5A, corriente
de inserción de 10A a 60°C
Caída de voltaje 120 y 230 V CA: ≅ 4.2V @ 0.5A
24 V CA ≅ 2.5V @ 0.5A
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico Terminales RMS de ≥ 2000 V para superficie
de montaje
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 80 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
V = Voltaje
NO = Contactor
normalmente abierto
NC = Contactor
normalmente
cerrado
TD = Retardo de tiempo
R = Restablecer
= Tiempo no
definido
RETARDO DE ENCENDIDO
12 RELEVADORES DE RETARDO DE TIEMPO
434 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — HVAC
www.littelfuse.com/tl
SERIE TL
Bloqueo
Diagrama de conexiones
Descripción
La serie TL brinda protección contra ciclos cortos en compresores. Al
finalizar cada funcionamiento, o toda vez haya una pérdida de voltaje,
se activará un retardo de bloqueo. Este retardo de bloqueo evita el
encendido del compresor hasta que se haya balanceado la presión de
carga. De esta manera se eliminan las vibraciones del relevador en
el compresor utilizando un segundo retardo de encendido opcional.
La serie TL no debería utilizarse con resistores anticipadores de
enfriamiento o interruptores de estado sólido. (Consulte la Serie TA).
Funcionamiento (Bloqueo)
Bloqueo: al cierre inicial del S1, el relevador del compresor se energiza
de inmediato (o luego de un retardo de 1 s opcional). Al abrir el S1
o si se interrumpe el voltaje de entrada, el relevador de salida se
abre y permanece abierto durante el retardo de tiempo de bloqueo.
Durante este periodo de retardo de tiempo de bloqueo, el relevador del
compresor no podrá ser energizado.
Restablecimiento: el retardo de tiempo de bloqueo no podrá
restablecerse. Luego de cumplirse el retardo de tiempo, la unidad se
reinicia automáticamente.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Retardo de bloqueo
Previene el ciclo rápido de compresores y elimina
mantenimientos no deseados debido a fusibles fundidos o
interruptores automáticos activados por rotores bloqueados
durante el ciclo rápido.
Retardo de encendido de
un segundo (modelos que
terminan en T)
Elimina las vibraciones del contactor debido a
oscilaciones del termostato
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad.
Relevador de salida de
estado sólido de corriente
uniforme de 1 A o corriente
de inserción de 10 A
Proporciona 100 millones de operaciones en condiciones
típicas
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Información para pedir
MODELO VOLTAJE DE
ENTRADA
TIEMPO DE
BLOQUEO
RETARDO DE
ENCENDIDO
TL120A5T 120 V CA 5 m 1 s
TL230A5 230 V CA 5 m Sin retardo
TL24A5T 24 V CA 5 m 1 s
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
S1 = Conmutador de inicio
CR = Relevador de control o
compresor
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 435
Relevadores de retardo de tiempo
Dedicado — HVAC Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/tl
SERIE TL
Especificaciones
Entrada
Voltaje 24, 120, o 230 V CA
Frecuencia de línea CC 50/60 Hz
Tolerancia ± 20 %
Salida
Corriente de carga mínima ≤ 40 mA
Corriente de carga máxima 1 A a 24 V CA; 0,5 A a 120 y 230 V CA a 60 °C
Corriente de inserción 10 A a 60 °C
Caída de voltaje 24 V CA - 2,5 V a 1 A
120 y 230 V CA - 4,2 V a 0,5 A
Retardo de tiempo
Tiempo de inicio ≅ 8 ms
Tiempo de bloqueo* Fijo de 2, 3 o 5 min
Tolerancia -15 %-35 %
Opcional El retardo de encendido de 1 s elimina las
vibraciones del contactor debido a rebotes
del termostato
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 2000 V en terminales RMS para montaje en
superficie
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 70 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 68 g (2,4 oz)
*La alimentación debe aplicarse al menos durante 15 s para lograr un retardo de bloqueo completo. Un tiempo
menor a 15 s llevará a periodos de retardo proporcionalmente más cortos.
NOTA: El resistor anticipador de enfriamiento o filtraciones podrían ocasionar un funcionamiento incorrecto.
Consulte la Serie TA para utilizar con sistemas de 24 V CA que incluyen resistores anticipadores o utilizan
interruptores de estado sólido.
Diagrama de funciones
LOCKOUT
L
E
V = Voltage
S1 = Initiate Switch
L = Load (CR)
E = Ready
TD = Time Delay
R = Reset
V = Voltaje
S1 = Conmutador de inicio
L = Carga (CR)
E = Preparado
TD = Retardo de tiempo
R = Restablecer
BLOQUEO
12 RELEVADORES DE RETARDO DE TIEMPO
436 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — HVAC
www.littelfuse.com/tsa141300
TSA141300
Ciclo anticortos, temporizador de estado sólido
Diagrama de conexiones
Descripción
El TSA141300 utiliza un sistema de circuitos único para brindar un
retardo de bloqueo y encendido aleatorio en un paquete compacto,
resistente y económico. Al realizar la conexión como se indica en
la imagen, el TSA141300, en diversas condiciones, impide que las
unidades se activen a la vez con su función de encendido aleatorio.
El TSA141300 además evita que el compresor realice ciclos rápidos
que llevarían a bloqueos del rotor. Este retardo de bloqueo se inicia al
finalizar cada funcionamiento del compresor. Una pérdida parcial de
alimentación también activaría el retardo de bloqueo.
Funcionamiento
Encendido aleatorio: con el termostato cerrado, al aplicar voltaje de
línea al sistema, se inicia un retardo de tiempo. Al finalizar dicho retardo,
el relevador del compresor se energizará. (El retardo de encendido
aleatorio es igual al retardo de bloqueo).
Ciclo anticortos: al finalizar cada ciclo, al abrirse el termostato, se inicia
un retardo de bloqueo que previene la reenergización del relevador
del compresor durante este periodo. Si se cierra el termostato luego
de completarse el retardo de tiempo, el relevador del compresor se
energizará de inmediato.
Pérdida de alimentación: si ocurriera una pérdida parcial de energía,
el bloqueo se iniciará de nuevo para prevenir que el relevador del
compresor se energice durante el periodo del retardo.
Características y beneficios
J Retardo de bloqueo: previene la recirculación rápida del compresor en
equipo de aire acondicionado, refrigeración o bombas de calor
J Retardo de encendido aleatorio: proporciona un encendido
escalonado para múltiples unidades
J Tiempo de respuesta rápido
J Todos los relevadores de estado sólido con sistema de circuitos
encapsulado
COMPRESSOR
RELAY
LINE
R
3 2
1
AUX
CONTACT
OVERLOAD
THERMOSTAT
Especificaciones
Retardo de tiempo
Tipo Fijo desde fábrica de 5 minutos
Exactitud de repetición ± 5 % bajo condiciones fijas
Tolerancia Calibración de fábrica: ± 15 %
Retardo de tiempo vs.
temperatura ± 10% max.
Entrada
Voltaje 120 voltios CA
Tolerancia ± 20 % del valor nominal
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Corriente de carga máxima 1 amperio para corriente uniforme,
10 amperios para corriente de inserción a 60 °C
Caída de voltaje 2,5 voltios típica a 1 amperio
Protección
Rápidos transitorios eléctricos Protegido
Voltaje disruptivo dieléctrico Mayor a 1500 voltios RMS
Resistencia de aislamiento 100 MΩ, mínimo
Mecánica
Montaje Montaje de superficie con un tornillo n.º 8 o
n.º 10
Paquete Acoplamiento moldeado con sistema de
circuitos encapsulado
Terminación Terminales de conector rápido macho de
6,35 mm (0,25 in)
Dimensiones H 50,80 mm (2"); A 50,80 mm (2");
P 30,70 mm (1,21")
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a +80 °C/-40 °C a +85 °C
Humedad 95 % relativa, sin condensación
Diagrama de funciones
RANDOM START/LOCKOUT DELAY
V = Input Voltage
TH = Thermostat
CR = Compressor
Relay
TD = Time Delay
R = Reset
TH
CR
V = Voltaje
TH = Termostato
CR = Relevador del
compresor
TD = Retardo de tiempo
R = Restablecer
RETARDO DE BLOQUEO/ENCENDIDO ALEATORIO
SOBRECARGA
LÍNEA
TERMOSTATO
RELEVADOR DE
COMPRESOR CONTACTOR
AUX.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 437
Relevadores de retardo de tiempo
Dedicado — Expendio de monedas Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/hrv
SERIE HRV
Contador de monedas
Diagrama de conexiones
Descripción
El HRV combina la exactitud de un circuito basado en microcontrolador
con una salida de relevador electromecánico. La capacidad de
conmutación del HRV permite un control directo de cargas como
compresores, bombas, motores, calentadores y sistemas de iluminación.
La versión HRV “S” proporciona un tiempo de preparación luego de
alcanzar el número de cierres del interruptor de inicio seleccionados para
ejecutarse. La versión HRV “A” incluye todas las funciones “S” y permite
que el tiempo de expendio sea extendido por cada cierre adicional del
interruptor de inicio. El HRV es ideal para máquinas expendedoras de
monedas o boletos donde el costo es un factor relevante. El sistema de
circuitos electrónicos está encapsulado para proteger contra humedad y
vibración.
Funcionamiento
Totalizador de monedas y temporizador de expendio (versión “S”):
el voltaje de entrada debe aplicarse antes y durante el funcionamiento.
Cuando el número total de cierres del interruptor de inicio S1 iguala el
número para iniciar definido en 3 interruptores DIP inferiores, la carga se
energiza y comienza el tiempo de expendio definido en los 7 interruptores
DIP superiores. Al finalizar el tiempo de expendio, la carga se desenergiza y
se restablece el tiempo de expendio. Cerrar el interruptor de inicio durante
el tiempo de expendio no afectará el retardo de tiempo de expendio.
Temporizador de expendio acumulativo (Versión “A”):
el voltaje de entrada debe aplicarse antes y durante el funcionamiento.
Cuando el número total de cierres del interruptor de inicio S1 iguala
el número para iniciar definido en 3 interruptores DIP inferiores, la
carga se energiza y comienza el tiempo de expendio. Por cada cierre
del interruptor de inicio, la unidad HRV añade un tiempo por periodo
de moneda, según funcionamiento de los 7 interruptores DIP, sobre el
tiempo de expendio total.
Nota sobre el funcionamiento: si se cierra el S1 al aplicar el voltaje de entrada, el relevador de salida
permanece desenergizado y el contador S1 permanece en cero cierres. Para un funcionamiento adecuado, al
menos un interruptor DIP de “tiempo de expendio” y un “cierre para encendido” debe estar en la posición “ON”.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece
el retardo de tiempo de expendio, el contador de cierre S1, y se
desenergiza el relevador de salida.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Basado en microcontrolador Exactitud de repetición +/ - 0,1 %,
Exactitud de ajuste 0-2 %, o 50 ms
Encapsulado Protege contra impactos, vibración y humedad
Contactos normalmente
abiertos de 30 A , 1 Hp a
125 V CA
Permite un control directo de cargas como compresores,
bombas, motores y calentadores sin un contactor
Activación de expendio de
monedas seleccionable por
interruptor
Brinda flexibilidad al usuario para elegir el número de
monedas para iniciar el ciclo de expendio
El interruptor de monedas
puede conectarse a un
contador
Brinda al usuario un conteo exacto del número total de
monedas recolectadas
L1 N/L2
L1 N/L2
V = Voltaje
S1 = Conmutador de inicio
L = Carga
UTL = Carga opcional no medida
SALIDA
AISLADA
SALIDA
NO AISLADA
Información para pedir
MODELO VOLTAJE DE ENTRADA TIEMPO DE EXPENDIO MODO DE OPERACIÓN CLASIFICACIÓN Y ESTRUCTURA DE SALIDA
HRV11SC 12 V CC 1-127 s Totalizador de monedas 30 A SPDT, NO (aislado)
HRV24AC 24 V CA 0,25-31,75 min Acumulativo 30 A SPDT, NO (aislado)
HRV41AE 120 V CA 1-127 s Acumulativo 30 A SPDT, NO (aislado)
HRV41SE 120 V CA 1-127 s Totalizador de monedas 30 A SPDT, NO (aislado)
HRV42SE 120 V CA 5-635 s Totalizador de monedas 30 A SPDT, NO (aislado)
HRV43AE 120 V CA 0,1-12,7 min Acumulativo 30 A SPDT, NO (aislado)
HRV43AN 120 V CA 0,1-12,7 min Acumulativo 30 A SPDT, NO (no aislado)
HRV43SE 120 V CA 0,1-12,7 min Totalizador de monedas 30 A SPDT, NO (aislado)
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
12 RELEVADORES DE RETARDO DE TIEMPO
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 17.
438 ©2018 Controladores y Relevadores de Protección de Littelfuse
Relevadores de retardo de tiempo
Conocimientos aplicados | Respuestas entregadas Dedicado — Expendio de monedas
www.littelfuse.com/hrv
SERIE HRV
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador
de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Ajuste de interruptor
Combina siete interruptores superiores
en la posición “ON” para tiempos de
expendio en minutos.
Combina tres interruptores inferiores
en la posición “ON” para el número de
cierres para el encendido.
Diagrama de funciones
ACCUMULATING VENDING TIMER V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
L = Load
TD = Time Delay
R = Reset
NO, L
COIN TOTALIZER / VENDING TIMER
V = Voltage
S1 = Initiate Switch
L = Load
TD = Time Delay
L R = Reset
Especificaciones
Funciones de conteo/
Tipo de interruptor Mecánico (conteo en el cierre del interruptor)
Tiempo de cierre
del interruptor mínimo ≥ 20 ms
Tiempo de apertura del interruptor
mínimo (entre cierres) ≥ 20 ms
Rango de conteo a encendido 1-7 conteos
Número de conteos máximo
(versión “A”) 250
Rango/Retardo de tiempo *** Ajustable entre 1 s y 31,75 min en 4 rangos
Ajuste Interruptor DIP con posiciones 7 a 10
Exactitud del ajuste 0 % a +2 % o 50 ms, lo que sea mayor
Exactitud de repetición ± 0,1 % o 20 ms, lo que sea mayor
Tiempo de restablecimiento ≤ 150 ms
Retardo de tiempo vs.
temperatura y voltaje ≤ ± 2 %
Entrada
Voltaje 12 o 24 V CC; 24, 120 o 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
120 y 230 V CA -20 % - 10 %
Frecuencia de línea CA/
Voltaje de onda CC 50/60 Hz/≤ 10 %
Consumo de energía CA ≤ 4 VA; CC ≤ 2 W
Salida
Tipo Relevador electromecánico
Forma SPDT aislado o SPDT no aislado
Clasificaciones nominales SPDT-NO SPDT-NC
Propósito general
125/240 V CA 30 A 15 A
Resistiva
125/240 V CA 30 A 15 A
28 V CC 20 A 10 A
Carga de motor
125 V CA 1 HP* 1/4 HP**
240 V CA 2 HP** 1 HP**
Duración Mecánica - 1 x 106
;
Eléctrica - 1 x 105
, *3 x 104, ** 6000
Protección
Sobretensión IEEE C62.41-1991 Nivel A
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 1500 V RMS de terminal de entrada a salida
en unidades aisladas
Resistencia de aislamiento ≥ 100 MΩ
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10
(M5 x 0.8)
Dimensiones H 76,7 mm (3"); A 50,8 mm (2");
P 38,1 mm (1,5")
Terminación Terminales de conector rápido macho (6,35 mm)
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 70 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
*** Para aplicaciones con certificación CE, el voltaje debe ser aislado en el momento de cambiar la posición
del interruptor.
V = Voltaje
S1 = Conmutador de
inicio
NO = Contactor
normalmente
abierto
L = Carga
TD = Retardo de tiempo
R = Restablecer
TEMPORIZADOR DE EXPENDIO ACUMULATIVO
TOTALIZADOR DE MONEDAS/TEMPORIZADOR DE EXPENDIO 12 RELEVADORES DE RETARDO DE TIEMPO
©2018 Controladores y Relevadores de Protección de Littelfuse 439 www.littelfuse.com/relayscontrols
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas
LUCES INTERMITENTES Y CONTROLES
DE ILUMINACION EN TORRES
Luces intermitentes para iluminación incandescente o LED utilizados
con aplicaciones alternas y no alternas en las industrias de señalización,
comunicaciones y publicidad. Disponible en versiones con aprobación FAA para
control de iluminación de obstrucción. Iluminación en torres para torres de
comunicaciones, edificios altos y puentes conforme a la reglamentaciones de la FA.
Diseños compatibles con torres de frecuencias AM y FM.
Luces intermitentes
Serie FSU1000 .......................................................................................440
Serie FS100 Luz intermitente de corriente baja ................................442
Serie FS100 Luz intermitente de potencia intermedia ......................444
Serie FS200 .......................................................................................446
Serie FS300 .......................................................................................448
FS491 .......................................................................................450
Serie FS500 .......................................................................................451
Serie SC3/SC4 Controladores de secuenciación ...................................453
Controles para iluminación de obstrucción y torres
Serie FA/FS .......................................................................................455
Serie FB Relevadores de alarma para faro incandescente
y luces intermitentes ....................................................457
SCR490D Relevador de alarma para luces de obstrucción ..........458
Serie SCR Relevador de alarma para luces universales ...............459
FB9L Relevador de alarma para luces universales ...............461
SCR9L Relevador de alarma para luces universales ...............463
Serie PCR Controlador de fotografías............................................465
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
440 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Luces intermitentes
www.littelfuse.com/fsu1000
Diagrama de conexiones
SERIE FSU1000
Descripción
El FSU1000 incorpora un índice de iluminación con ajuste integrado de
10 a 100 destellos por minuto (DPM) y un voltaje de entrada universal en
un solo dispositivo. Su sistema de circuitos está encapsulado y tiene la
capacidad de controlar cargas hasta de 20 A. La versatilidad del FSU1000
lo hace ideal para aplicaciones donde se requieren múltiples índices de
iluminación y voltajes de funcionamiento.
Funcionamiento
Cuando se aplica el voltaje de entrada en el terminal 2 y la carga (luz),
dicha carga se energiza uniformemente. Cuando se aplica el voltaje de
carga en el terminal 3, el relé de salida se ilumina.
Interruptor de corriente baja opcional (S1): este interruptor de
corriente baja podría ser un contacto o interruptor de seguridad. Mientras
está abierto, el operario observa la carga (luz) ENCENDIDA y operando.
Cuando se cierra el interruptor de seguridad, la carga (luz) se ilumina para
alertar al operario.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Voltaje de entrada universal
de 24-240 V CA
Brinda flexibilidad para un amplio rango de aplicaciones
con una sola pieza
Índice de iluminación
con ajuste integrado
Brinda flexibilidad para que el usuario elija el índice de
iluminación entre 10 y 100 DPM
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad
Clasificación de salida alta
hasta de 20 A en corriente
uniforme, 200 A en corriente
de inserción
Permite un funcionamiento directo de cargas de corriente
altas sin un contactor
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de
pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Información para pedir
MODELO
CLASIFICACIÓN
DE CORRIENTE DE
INSERCIÓN
CLASIFICACIÓN
DE CORRIENTE DE
CARGA
FSU1000 10 A 1 A
FSU1003 60 A 6 A
FSU1004 100 A 10 A
FSU1005 200 A 20 A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
V = Voltaje
S1 = Interruptor de
corriente baja
opcional
L = Carga
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19.
©2018 Controladores y Relevadores de Protección de Littelfuse 441
Luces intermitentes y controles de iluminación en torres
Luces intermitentes Conocimientos aplicados | Respuestas entregadas
SERIE FSU1000
FLASHER (NC)
Especificaciones Diagrama de funciones de las luces intermitentes
Datos técnicos
Funcionamiento Luces intermitentes de estado sólido para
recirculación de ENCENDIDO/APAGADO
(funcionamiento permanente)
Índice de iluminación Ajustable de 10 a 100 DPM
Proporcion de
ENCENDIDO/APAGADO ≅ 50 %
Entrada
Rango/Frecuencia 24-240 V CA/50/60 Hz
Salida
Tipo de carga Inductiva, resistiva, o incandescente
Clasificación nominal
de carga máxima 1, 6, 10 o 20 A de corriente uniforme
Corriente de inserción 10 veces la corriente uniforme
Mecánica
Montaje* Montaje en superficie con un tornillo n.º 10 (M5 x 0,8)
Dimensiones
FSU1000 H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
FSU1003, FSU1004 H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho
6,35 mm (0,25")
Protección
Sistema de circuitos Encapsulado
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C (240 V CA +50 °C)/-40 °C a 85 °C
Peso Unidades de 1 A: ≅ 68 g (2,4 oz)
≥ Unidades de 6 A: ≅ 111 g (3,9 oz)
*Las unidades con clasificación > 6A deben ser atornilladas a una superficie metálica utilizando el disipador de
calor compuesto. La temperatura máxima de la superficie de montaje es de 90 °C.
V = Voltaje
S1 = Conmutador de
inicio
L = Carga
R = Restablecer
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
T1 ≅ T2
www.littelfuse.com/fsu1000
LUZ INTERMITENTE
(NC)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
442 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Luces intermitentes
www.littelfuse.com/fs100Lowcurrent
Diagrama de conexiones
SERIE FS100
Descripción
La serie FS100 (corriente baja) puede ser utilizada para controlar cargas
inductivas, resistivas o incandescentes. Esta serie ofrece un relé de
salida de estado sólido con corriente de inserción de 10 A, o corriente
uniforme de 1 A (onda completa) o 2 A (onda intermedia) y puede
solicitarse con un voltaje de entrada de 24 o 120 V CA. La serie FS100
ofrece un índice de iluminación fijo de fábrica de 75 DPM o puede
solicitarse con un índice de iluminación personalizado y fijo que varía
entre 45 y 150 DPM. Ideal para aplicaciones de fabricantes originales
donde los costos son un factor importante.
Funcionamiento
Cuando se aplica el voltaje de entrada, se inicia el tiempo INACTIVO
T2. Cuando finaliza el tiempo de INACTIVIDAD, se inicia el tiempo de
ACTIVIDAD T1 y la carga se energiza. Cuando finaliza el T1, se inicia el
T2 y la carga se desenergiza. Este ciclo se repite hasta que se aísle el
voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece el relé de
salida y la secuencia a T2.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Tamaño compacto:
38 x 23,9 mm (1,5" x 0,94") Ideal para aplicaciones de fabricantes originales
Iluminación personalizada
Índices disponibles
Se adapta a aplicaciones específicas: índices
personalizados que varían entre 45 y 150 DPM
Accesorios
Abrazadera de sujeción P1023-2 “P”
Abrazadera de montaje en aluminio 15/16
Luces intermitentes de corriente baja
Información para pedir
MODELO ENTRADA EN
VOLTIOS CA
CLASIFICACIÓN
NOMINAL DE
SALIDA TIPO A
TIPO DE SALIDA
CA TIPO DE CARGA ÍNDICE DE
ILUMINACIÓN
FS126 120 1 Onda completa Resistiva e incandescente 75 DPM
FS126-45 120 1 Onda completa Resistiva e incandescente 45 DPM
FS126-60 120 1 Onda completa Resistiva e incandescente 60 DPM
FS126RC 120 1 Onda completa Inductiva, resistiva, e incandescente 75 DPM
FS126RC-45 120 1 Onda completa Inductiva, resistiva, e incandescente 45 DPM
FS127 120 2 Onda intermedia Resistiva e incandescente 75 DPM
FS146 24 1 Onda completa Resistiva e incandescente 75 DPM
FS146RC 24 1 Onda completa Inductiva, resistiva, e incandescente 75 DPM
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N
V = Voltaje
L = Carga
R = Cable rojo
B = Cable negro
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 25.
©2018 Controladores y Relevadores de Protección de Littelfuse 443
Luces intermitentes y controles de iluminación en torres
Luces intermitentes Conocimientos aplicados | Respuestas entregadas
SERIE FS100
Diagrama de funciones de las luces intermitentes
FLASHER (OFF FIRST) V = Voltaje
R = Restablecer
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
T1 ≅ T2
Especificaciones
Datos técnicos
Funcionamiento Luces intermitentes de estado sólido para
ENCENDIDO/APAGADO (funcionamiento permanente)
Índice de iluminación Fijo desde fábrica en 75 DPM ± 20 %
Índices de iluminación
personalizados Entre 45 y 150 DPM ± 20 %
Proporcion de
ENCENDIDO/APAGADO ≅ 50 %
Entrada
Voltaje 24, 120 V CA, ± 15 %
Frecuencia de línea 50/60 Hz
Salida
Salida Onda completa CA u onda intermedia rectificada CA
Tipo de carga Inductiva, resistiva o incandescente
(Para cargas inductivas, elija el sufijo RC)
Clasificación nominal
de carga máxima Onda completa: 1 A de corriente uniforme
Onda intermedia: 2 A de corriente uniforme
Corriente de inserción 10 A
Mecánica
Montaje Abrazadera de montaje removible; utilizar con un
tornillo n.º 8 (M4 x 0.7)
Conexiones/Cableado Cables de 0,82 mm2
(18 AWG) (6 in). (15,2 cm)
Dimensiones H 38,1 mm (1,5"); A 23,9 mm (0,94")
Protección
Sistema de circuitos Encapsulado
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 31 g (1,1 oz)
Luces intermitentes de corriente baja
www.littelfuse.com/fs100Lowcurrent
LUZ INTERMITENTE
(INACTIVA EN TIEMPO INICIAL)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
444 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Luces intermitentes
www.littelfuse.com/fs100med
Diagrama de conexiones
V = Voltaje
L = Carga
SERIE FS100
Descripción
La serie FS100 (corriente intermedia) puede ser utilizada para controlar
cargas inductivas, resistivas, o incandescentes. Voltajes de entrada de
24, 120, o 230 V CA disponibles. Índices de iluminación fijos de fábrica
de 30, 50, 60, y 90 DPM, con índices de iluminación personalizados que
varían entre 10 y 300 DPM. Encapsulación que brinda protección contra
impactos, vibración, y humedad. Este grupo de luces parpadeantes de
estado sólido ha demostrado su fiabilidad con años de uso en todo el
mundo.
Funcionamiento
Cuando se aplica el voltaje de entrada, se inicia el tiempo INACTIVO
T2. Cuando finaliza el tiempo de INACTIVIDAD, se inicia el tiempo de
ACTIVIDAD T1 y la carga se energiza. Cuando finaliza el T1, se inicia el
T2 y la carga se desenergiza. Este ciclo se repite hasta que se aísle el
voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece el relé de
salida y la secuencia a T2.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
3 A de corriente uniforme,
30 A de corriente de
inserción
Brinda control directo de cargas resistentes, inductivas e
incandescentes
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de
pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
L1 N/L2
Luces intermitentes de potencia intermedia
Información para pedir
MODELO ENTRADA ÍNDICE DE ILUMINACIÓN
FS143 24 V CA 90 DPM
FS152 120 V CA 90 DPM
FS152-30 120 V CA 30 DPM
FS152-60 120 V CA 60 DPM
FS162 230 V CA 90 DPM
FS162-30 230 V CA 30 DPM
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 445
Luces intermitentes y controles de iluminación en torres
Luces intermitentes Conocimientos aplicados | Respuestas entregadas
SERIE FS100
FLASHER (OFF FIRST) V = Voltaje
R = Restablecer
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
T1 ≅ T2
Diagrama de funciones de las luces
intermitentes
Especificaciones
Datos técnicos
Funcionamiento Luces intermitentes de estado sólido para
ENCENDIDO/APAGADO
(funcionamiento permanente)
Índice de iluminación Fijo en 90 DPM ± 10 %
Índices de iluminación
personalizados 10-300 DPM ± 10 %
Proporcion de
ENCENDIDO/APAGADO ≅ 50 %
Entrada
Voltaje/Frecuencia 24, 120 o 230 V CA ± 15 %/50/60 Hz
Salida
Tipo de carga Inductiva, resistiva, o incandescente
Salida Onda completa CA, estado sólido, SPST
Clasificación nominal
de carga máxima 3 A de corriente uniforme
Corriente de inserción 10 veces la corriente uniforme
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10 (M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conexión rápida
macho de 6,35 mm (0,25 in)
Protección
Sistema de circuitos Encapsulado
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Peso ≅ 62 g (2,2 oz)
Luces intermitentes de potencia intermedia
www.littelfuse.com/fs100med
LUZ INTERMITENTE
(INACTIVA EN TIEMPO INICIAL)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
446 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Luces intermitentes
www.littelfuse.com/fs200
Diagrama de conexiones
SERIE FS200
Descripción
La serie FS200 puede ser utilizada para controlar cargas inductivas,
resistivas o incandescentes. Índice de iluminación fijo de fábrica de 45 o
90 DPM o puede solicitarse con un índice de iluminación personalizado
y fijo que varía entre 10 y 180 DPM. Encapsulación que brinda
protección contra impactos, vibración, y humedad. Su desempeño
uniforme, la capacidad para corriente de inserción alta y la inmunidad a
radiofrecuencia baja hacen de esta serie la opción ideal para aplicaciones
industriales en general.
Funcionamiento
Cuando se aplica el voltaje de entrada, se inicia el tiempo INACTIVO
T2. Cuando finaliza el tiempo de INACTIVIDAD, se inicia el tiempo de
ACTIVIDAD T1 y la carga se energiza. Cuando finaliza el T1, se inicia el
T2 y la carga se desenergiza. Este ciclo se repite hasta que se aísle el
voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece el relé de
salida y la secuencia a T2.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Corriente uniforme de 3 A,
corriente de inserción de
30 A y contacto de salida
SPST
Brinda control directo de cargas resistentes, inductivas e
incandescentes
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad
Capacidad para corriente de
inserción alta e inmunidad a
radiofrecuencia baja
Ideal para aplicaciones industriales en general
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de
pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Información para pedir
MODELO ENTRADA CLASIFICACIÓN
NOMINAL
ÍNDICE DE
ILUMINACIÓN
FS219-45 12 V CC ± 20 % 3 A 45 DPM
FS224 24 V CC ± 20 % 3 A 90 DPM
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
V = Voltaje
L = Carga
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 447
Luces intermitentes y controles de iluminación en torres
Luces intermitentes Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/fs200
SERIE FS200
FLASHER (OFF FIRST)
V = Voltaje
R = Restablecer
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
T1 ≅ T2
Diagrama de funciones de las luces
intermitentes
Especificaciones
Datos técnicos
Funcionamiento Luces intermitentes de estado sólido para
ENCENDIDO/APAGADO
(funcionamiento permanente)
Índice de iluminación Fijo en 90 DPM ± 10 %
Índice de iluminación
personalizados 10-180 DPM
Proporcion de
ENCENDIDO/APAGADO ≅ 50 %
Entrada
Voltaje 12, 24, 36, 48, o 110 V CC
Salida
Tipo de carga Inductiva, resistiva, o incandescente
Clasificación nominal de
carga máxima 0,25-3 A de corriente uniforme
Corriente de filtración de
estado INACTIVO
12 y 24 V CC ≤ 250 µA
Corriente de inserción 10 veces la corriente uniforme
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10 (M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho
6,35 mm (0,25”
Protección
Sistema de circuitos Encapsulado
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Peso ≅ 62 g (2,2 oz)
LUZ INTERMITENTE
(INACTIVA EN TIEMPO INICIAL)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
448 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Luces intermitentes
www.littelfuse.com/fs300
Diagrama de conexiones
SERIE FS300
Descripción
La serie de luces intermitentes de estado sólido FS300 fue diseñada
específicamente para operar cargas de luces. Su conexión de dos
terminales en serie permiten una fácil instalación. La alta inmunidad
a interferencias y transitorios eléctricos hacen de la Serie FS300 una
opción ideal para aplicaciones de piezas automotrices en movimiento.
Todas las plataformas de estado sólido brindan fiabilidad y larga
duración. La serie FS300 ofrece un índice de iluminación fijo de
fábrica de 75 DPM o puede solicitarse con un índice de iluminación
personalizado y fijo que varía entre 60 y 150 DPM.
Funcionamiento
Cuando se aplica el voltaje de entrada, se inicia el tiempo INACTIVO
T2. Cuando finaliza el tiempo de INACTIVIDAD, se inicia el tiempo de
ACTIVIDAD T1 y la carga se energiza. Cuando finaliza el T1, se inicia el
T2 y la carga se desenergiza. Este ciclo se repite hasta que se aísle el
voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece el relé de
salida y la secuencia a T2.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad
Alta inmunidad a
interferencias y transitorios
eléctricos
Diseñado específicamente para aplicaciones de piezas
automotrices en movimiento
Capacidad de corriente de
alta tensión (10 veces la
corriente uniforme)
Funcionamiento directo de cargas de luces incandescentes
Conexión de dos terminales
en serie
Proporciona una rápida y fácil instalación para aplicaciones
nuevas o existentes
Accesorios
Abrazadera de montaje P1023-6
La orientación a 90° de las ranuras de montaje hacen
que el proceso de instalación/desinstalación de los
módulos sea fácil y rápido.
P1015-64 (AWG 14/16)
Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
Información para pedir
MODELO ENTRADA CARGA DE CORRIENTE
MÁXIMA
FS312 12 V CC ± 20 % 2,5 A
FS324 24 V CC ± 20 % 1,5 A
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
V = Voltaje
L = Carga
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 16.
©2018 Controladores y Relevadores de Protección de Littelfuse 449
Luces intermitentes y controles de iluminación en torres
Luces intermitentes Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/fs300
SERIE FS300
FLASHER (OFF FIRST) V = Voltaje
R = Restablecer
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
T1 ≅ T2
Especificaciones Diagrama de funciones de las luces intermitentes
Datos técnicos
Funcionamiento Luces intermitentes de estado sólido para
recirculación de ENCENDIDO/APAGADO
(funcionamiento permanente)
Índice de iluminación Fijo en 75 DPM ± 10 %
Índices de iluminación
personalizados 60 a 150 DPM
Proporcion de
ENCENDIDO/APAGADO ≅ 50 %
Entrada
Voltaje 12, 24, 36, 48, 72, y 110 V CC
Salida
Tipo de carga Resistiva o incandescente
Clasificación nominal de
carga máxima 0,25-2,5 A de corriente uniforme
Corriente de inserción 10 veces la corriente uniforme
Mecánica
Montaje Montaje de superficie con un tornillo n.º 10 (M5 x 0.8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 30,7 mm (1,21")
Terminación Terminales de conector rápido macho de 6,35 mm
(0,25 in)
Protección
Sistema de circuitos Encapsulado
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 62 g (2,2 oz)
LUZ INTERMITENTE
(INACTIVA EN TIEMPO INICIAL)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
450 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Luces intermitentes
www.littelfuse.com/fs491
FS491
Descripción
La FS491 son luces intermitentes CA de filtración baja diseñadas para
controlar luces LED, o cargas resistivas. Este producto ofrece una salida
de estado sólido y procesa un voltaje de entrada de 120 V CA a 240 V CA.
Ofrece un índice de iluminación fijo de fábrica de 75 DPM. El FS491 es la
solución perfecta para iluminación con luces LED.
Funcionamiento
Cuando se aplica el voltaje de entrada, el relé de salida se energiza y se
inicia el tiempo ACTIVO. Cuando finaliza el tiempo ACTIVO, el relé de
salida se desenergiza y comienza el tiempo INACTIVO. Cuando finaliza el
tiempo INACTIVO, el relé de salida se energiza y se repite el ciclo tantas
veces como se aplique el voltaje de entrada.
Restablecimiento:
cuando se aísla el voltaje de entrada se restablece el relé de salida y la
secuencia de iluminación.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Estado totalmente sólido Sin piezas móviles para evitar arcos eléctricos y deterioro,
hasta 100 millones de operaciones bajo condiciones típicas
Completamente
encapsulado
Protege el sistema de circuitos contra impactos, vibración y
humedad
Corriente de filtración
extremadamente baja Ideal para utilizar en aplicaciones de iluminación por LED
Especificaciones
Datos técnicos
Funcionamiento Luces intermitentes de estado sólido de ENCENDIDO/
APAGADO (funcionamiento permanente)
Índice de iluminación Fijo en 75 DPM ± 20 %
Proporcion de
ENCENDIDO/APAGADO ≅ 50 %
Entrada
Voltaje 120-240 V CA
Tolerancia ± 15 %
Frecuencia de línea 50/60 Hz
Salida
Tipo de carga LED o resistiva
Salida Rectificador en puente y FET
Clasificación nominal de
carga máxima
120 V CA a 240 V CA 0,5 A de corriente uniforme; 5 A de corriente de inserción
Máx. Corriente de filtración de carga 250 µA
Caída de voltaje 2 V típica
Mecánica
Montaje Montaje de superficie con un tornillo n.º 8 (M4 x 0.7)
Dimensiones Diámetro 23,9 mm (0,94"); L 38,1 mm (1,5")
Protección
Sobretensión IEEE C62.41 - 1991 Nivel A
Sistema de circuitos Encapsulado
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 31 g (1,1 oz)
L1 N/L2
V = Voltaje
L = Carga
R = Cable rojo
B = Cable negro
W = Cable blanco
Diagrama de conexiones
Diagrama de funciones
FLASHER (ON FIRST)
El Tiempo ACTIVO más el tiempo INACTIVO son
iguales a un parpadeo completo.
V = Voltaje
R = Restablecer
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
T1 ≅ T2
LUZ INTERMITENTE
(TIEMPO DE ACTIVIDAD INICIAL)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 25.
©2018 Controladores y Relevadores de Protección de Littelfuse 451
Luces intermitentes y controles de iluminación en torres
Luces intermitentes Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/fs500
Diagrama de conexiones
SERIE FS500
Descripción
El índice de iluminación de la Serie FS500 es ajustable entre 10 y
100 DPM. Se incluye una tuerca de seguridad para fijar el índice de
iluminación seleccionado. El circuito electrónico de larga duración
combinado con un relé electromecánico de calidad brindan flexibilidad y
fiabilidad en la mayoría de aplicaciones.
Funcionamiento
Cuando se aplica el voltaje de entrada, el relé de salida se energiza y se
inicia el tiempo ACTIVO. Cuando finaliza el tiempo ACTIVO, el relé de
salida se desenergiza y se inicia el tiempo INACTIVO. Cuando finaliza el
tiempo INACTIVO, el relé de salida se energiza y se repite el ciclo tantas
veces como sea aplicado el voltaje de entrada.
Restablecimiento: cuando se aísla el voltaje de entrada se restablece el
relé de salida y la secuencia.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Sistema de circuitos de
estado sólido con relé
electromecánico
Sistema de circuitos de larga duración, fiable y de bajo
costo
Conexión por conector octal
estándar industrial Elimina la necesidad de utilizar conectores especiales
Índice de iluminación
ajustable
Brinda flexibilidad para que el usuario elija el índice de
iluminación entre 10 y 100 DPM
Contactos de salida DPDT
aislados de 10 A Permite controlar las cargas para voltajes de CA o CC
Accesorios
Kit de montaje de panel frontal BZ1
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes, y otros controles.
Conector octal de 8 pines NDS-8
Montaje en superficie o riel DIN de 35 mm para
8 pines. Montaje en superficie con dos tornillos o
anillos de presión n.º 6 en un riel DIN de 35 mm.
Utilice abrazaderas de presión PSC8.
Abrazaderas de presión PSC8
Fijan de forma segura controles de conector en
cualquier posición. Brindan protección contra la
vibración. Utilizar con conector octal NDS-8. Se
venden por pares.
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
L1 N/L2
V = Voltaje
Información para pedir
MODELO VOLTAJE DE ENTRADA
FS512 12 V CC
FS524 24 V CA/CC
FS590 120 V CA/CC
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
*(ciertos modelos)
*
8 PINES
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 24.
452 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Luces intermitentes
www.littelfuse.com/fs500
SERIE FS500
FLASHER (ON FIRST-DPDT)
V = Voltaje
R = Restablecer
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
NO = Normalmente abierta
NC = Normalmente cerrada
Especificaciones Diagrama de funciones de las luces intermitentes
Datos técnicos
Funcionamiento Luces PARAPADEANTES de recirculación de
ENCENDIDO/APAGADO con índice de iluminación
ajustable
Índice de parapadeo Ajustable entre 10 y 100 operaciones por minuto
(rango garantizado)
Proporcion de
ENCENDIDO/APAGADO ≅ 50 %
Entrada
Voltaje de entrada 12 V CC, 24 V CA/CC, 120 V CA/CC, 230 V CA
Tolerancia
12 V CC y 24 V CC/CA -15 % - 20 %
120 V CA/V CC y 230 V CA -20 % - 10 %
Frecuencia de línea 50/60 Hz
Salida
Tipo de carga Relé electromecánico
Forma DPDT
Clasificación nominal 10 A resistiva a 120/240 V CA y 28 V CC;
1/3 HP a 120/240 V CA
Mecánica
Montaje Conexión por puerto
Dimensiones H 91,6 mm (3,62"); A 60,7 mm (2,39");
P 45,2 mm (1,78")
Terminación Conector octal de 8 pines
Protección
Voltaje de aislamiento ≥ 1500 V RMS entre terminales de entrada y salida
Polaridad Las unidades de CC están protegidas contra
polaridad inversa
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-30 °C a 85 °C
Peso ≅ 164 g (5,8 oz)
LUZ INTERMITENTE
(DPDT, TIEMPO DE ACTIVIDAD INICIAL)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
©2018 Controladores y Relevadores de Protección de Littelfuse 453
Luces intermitentes y controles de iluminación en torres
Controladores de secuenciación Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/sc3-sc4
Diagrama de conexiones
SERIE SC3/SC4
Rastreador
Descripción
La serie SC3/SC4 son rastreadores de estado sólido de 3 o 4 canales
diseñados para sistemas de iluminación de tres circuitos en secuencia
para cargas de luces incandescentes. A diferencia de los rastreadores
electromecánicos, no hay contactos que evita arcos eléctricos, deterioro
y fallas potenciales.
Funcionamiento
Sistema de iluminación de 3 o 4 circuitos en secuencia para cargas
incandescentes con retardos de tiempo iguales para cada carga. Cuando
se aplica el voltaje de entrada, la Carga 1 es energizada. Al finalizar el
retardo de tiempo, la Carga 1 se desenergiza y la Carga 2 es energizada.
Al finalizar el retardo de tiempo, la Carga 2 se desenergiza y la Carga 3 es
energizada. Este ciclo se repite hasta que se aísle el voltaje de entrada.
El retardo de tiempo (índice) definido corresponde a la temporización
para el ciclo completo, para las 3 cargas (contactos de salida).
Restablecimiento: cuando se aísla el voltaje de entrada se restablece la
unidad y el ciclo.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Estado completamente
sólido y encapsulado
Sin piezas móviles susceptibles a arco eléctrico ni desgaste
prematuro y unidad encapsulada para proteger contra
choques eléctricos, vibración y humedad
Relé de salida de estado
sólido de corriente uniforme
de 1 A
Proporciona 100 millones de operaciones en condiciones
típicas.
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
Información para pedir
MODELO VOLTAJE DE
ENTRADA
CLASIFICACIÓN
NOMINAL CANAL ÍNDICE DE
ILUMINACIÓN
SC3120A 120 V CA 1 A 3 en secuencia Ajustable
30-30 DPM
SC4120A 120 V CA 1 A 4 en secuencia Ajustable
30-30 DPM
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
L1 N/L2
SC4 shown. For SC3, terminal 6 and
load L4 are eliminated.
V = Voltaje
L1 = Carga 1
L2 = Carga 2
L3 = Carga 3
L4 = Carga 4
Imagen del SC4. Para el SC3, se elimina el terminal 6 y
la carga L4.
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 28.
454 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Controladores de secuenciación
www.littelfuse.com/sc3-sc4
SERIE SC3/SC4
Especificaciones
Datos técnicos
Funcionamiento Sistema de iluminación de 3 circuitos en secuencia
para cargas de luces incandescentes. Índice fijo.
Para índices ajustables y de 4 circuitos en
secuencia, póngase en contacto con la fábrica.
Índice Fijo: 30 operaciones por minuto (± 10 %)
Entrada
Voltaje 120 V CA ± 15 %
Frecuencia de línea CC 50/60 Hz
Salida
Tipo Estado sólido
Clasificación nominal 1 A de corriente uniforme por salida
Mecánica
Montaje Montaje en superficie con dos tornillos n.º 6 (M3.5 x 0.6)
Terminación Terminales de conector rápido macho de 6,35 mm (0,25 in)
Dimensiones H 88,9 mm (3,5"); A 63,5 mm (2,5");
P 31 mm (1,22")
Protección
Sistema de circuitos Encapsulado
Voltaje disruptivo dieléctrico ≥ 2000 V en terminales para montaje en superficie
Resistencia de aislamiento ≥ 100 MΩ
Entorno:
Temperatura de funcionamiento/
almacenamiento -20 °C a 60 °C/-40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 153 g (5,4 oz)
Diagrama de funciones de las luces intermitentes
FLASHER (CHASING)
SC4 shown.
For SC3, L4 is eliminated and L1 TD
begins as soon as L3 TD is completed.
4
V = Voltaje
R = Restablecer
L1, L2, L3, L4 = Luces
TD = Retardo de tiempo
(todos son iguales)
Imagen del SC4.
Para el SC3, se eliminó la carga L4 y se inicia L1TD
tan pronto como se finalice L3TD.
LUCES INTERMITENTE (RASTREO)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
©2018 Controladores y Relevadores de Protección de Littelfuse 455
Luces intermitentes y controles de iluminación en torres
Controles para iluminación de obstrucción y torres Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/fa-fs
Diagrama de conexiones
SERIE FA/FS
Descripción
La serie FA/FS ha demostrado su fiabilidad a través de años de uso en
torres de comunicación, chimeneas, torres de enfriamiento, edificios
altos, puentes y torres de energía. Sus componentes de la más alta
calidad se encapsulan en un acoplamiento de plástico resistente con
una placa de transferencia de calor moldeada. El índice de iluminación, la
tasa de carga, y su diseño de control automático de protección cumplen
con la normas FAA. La conmutación de voltaje cero puede aumentar
la vida útil de las luces hasta en diez veces. El FS155-30RF incluye un
sistema de circuitos de filtrado de radiofrecuencia superior para utilizarse
en instalaciones con radiofrecuencia alta, lo que incluye torres de
enfriamiento AM.
Funcionamiento
Serie FS - Luces intermitentes (INACTIVO en tiempo inicial)
Serie FA - Módulos auxiliares
Cuando se aplica el voltaje de entrada, se inicia el tiempo INACTIVO
T2. Cuando finaliza el tiempo de INACTIVIDAD, se inicia el tiempo de
ACTIVIDAD T1 y la carga se energiza. Cuando finaliza el T1, se inicia el
T2 y la carga se desenergiza. Este ciclo se repite hasta que se aísle el
voltaje.
Restablecimiento: al aislar el voltaje de entrada se restablece el relé de
salida y la secuencia a T2.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Conmutación de voltaje cero Aumenta la vida útil de las luces hasta por 10 veces
Encapsulado Protege contra impactos, vibración y humedad
Superficie de montaje metalizada Facilita la transferencia de calor en aplicaciones de
corriente alta
Sistema de circuitos de filtrado de
radiofrecuencia superior (modelos
RF solamente)
Ideal para torres de enfriamiento AM y otras
instalaciones RF de gran altura
Alta capacidad para corrientes de
inserción de hasta 200 A
Capacidad para soportar la corriente de inserción
repetitiva de balizas incandescentes
Accesorios
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Conector rápido hembra
Estos terminales hembra de 6,35 mm (0,25 in)
son fabricados con un tonel aislador para brindar
resistencia a la deformación.
Conector rápido P1015-18 para adaptador de
pernos
Terminal de adaptador de pernos diseñada para
utilizar con todos los módulos con terminales de
conector rápido macho de 6,35 mm (0,25 in).
L1
N/L2 L1 L1 N/L2
N/L2 (H) L1 L2
(H)
Serie FS
FA155
FA165
FA155-2
FA165-2
FA155-2
V = Voltaje N = Neutro B = Baliza
DL = Carga ficticia para cargas de línea constante
Rd = 3,3 KΩ a 5 W para 120 V CA; 8,5 KΩ a 5 W para 230 V CA
F = Luces intermitentes (FS155-30T, FS155-30RF, FS165-30T)
AX = Unidad auxiliar (FA155, FA155-2, FA165, FA156-2)
*(Modelos FS155 y FA155 solamente)
*
Información para pedir
MODELO VOLTAJE DE
ENTRADA VATAJE CLASIFICACIÓN NOMINAL DE
CORRIENTE DE INSERCIÓN DESCRIPCIÓN
FA155 120 V CA 2500 W 200 A Unidad auxiliar para proteger cargas de línea constante
FA155-2 120 V CA 2500 W 200 A Unidad auxiliar para funcionamiento sincronizado de balizas adicionales. Iluminación sincronizada para balizas
adicionales en sistemas de 3 conexiones
FA165 230 V CA 5000 W 200 A Unidad auxiliar para proteger cargas de línea constante
FA165-2 230 V CA 5000 W 200 A Unidad auxiliar para funcionamiento sincronizado de balizas adicionales. Iluminación sincronizada para balizas
adicionales en sistemas de 2 conexiones
FS155-30RF 120 V CA 2500 W 200 A Para instalaciones con interferencia por radiofrecuencia alta incluyendo torres de enfriamiento AM
FS155-30T 120 V CA 2500 W 200 A Luces intermitentes de baliza estándar
FS165-30T 230 V CA 5000 W 200 A Luces intermitentes de baliza estándar
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
FA155
FS165-30T
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
Para conocer el plano de dimensiones, consulte: Apéndice, página 512, Figura 19. 13
456 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Controles para iluminación de obstrucción y torres
www.littelfuse.com/fa-fs
SERIE FA/FS
Diagrama de funciones de las luces
intermitentes
FLASHERS & AUX.
MODULES
FLASHER (OFF FIRST)
Especificaciones
Funcionamiento Luces intermitentes de baliza múltiples e
individuales con módulos auxiliares
Índice de iluminación
(Serie FS solamente) 30 ± 10 DPM
Tasa de ENCENDIDO/APAGADO
(Serie FS solamente) 50-67 % de tiempo ACTIVO; 33-50 % de tiempo INACTIVO
Voltaje 120 o 230 V CA ± 20 %
Frecuencia de línea 50/60 Hz
Clasificación nominal de salida
(Conmutación de voltaje cero) 2500 W a 120 V CA; 5000 W a 230 V CA
Corriente de inserción 200 A pico para 1 ciclo de línea CA
Montaje* Montaje en superficie con un tornillo n.º 10 (M5 x 0,8)
Dimensiones H 50,8 mm (2"); A 50,8 mm (2");
P 38,4 mm (1,51")
Terminación Terminales de conector rápido macho 6,35 mm (0,25")
Sistema de circuitos Encapsulado
Temperatura de funcionamiento/
almacenamiento -55° a 65 °C/-55 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 111 g (3,9 oz)
*Nota: debe ser instalado en una superficie metálica utilizando el disipador de calor compuesto. La temperatura
máxima de la superficie de montaje es de 90 °C.
V = Voltaje
R = Restablecer
L = Carga
T1 = Tiempo ACTIVO
T2 = Tiempo INACTIVO
T1 ≅ T2
F = Luces intermitentes
DL = Carga ficticia
AX = Módulo auxiliar
LUZ INTERMITENTE
(INACTIVA EN TIEMPO INICIAL)
LUCES INTERMITENTES
Y MÓDULOSAUXILIARES
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
©2018 Controladores y Relevadores de Protección de Littelfuse 457
Luces intermitentes y controles de iluminación en torres
Controles para iluminación de obstrucción y torres Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/fb
Diagrama de conexiones
SERIE FB
Relevadores de alarma para faro incandescente
y luces intermitentes
Descripción
La serie FB se utiliza para monitorear el funcionamiento de una baliza
incandescente de dos luces y un módulo de luces intermitentes
de baliza (o módulo auxiliar). Las luces intermitentes y las luces
incandescentes son monitoreadas detectando el flujo de corriente
en el circuito. Si las luces incandescentes o las luces intermitentes
no funcionan correctamente, se energizará tanto un relé de salida de
estado sólido como un relé SPDT aislado. Al conectarla a un sistema de
monitoreo en el sitio, esta unidad brinda protección de monitoreo de
balizas remoto de conformidad con la FAA/FCC. En una estructura de
múltiples balizas, se requiere una unidad por cada dos balizas de luces
incandescentes (una unidad por baliza para balizas LED).
Funcionamiento
Si una de las luces en una baliza incandescente falla, el relé y las salidas
contra falla de luces de estado sólido se energizan al transcurrir 10 s.
Si las luces intermitentes fallan en una condición ACTIVA o INACTIVA,
el relé y la salida contra falla de luces intermitentes de estado sólido se
energizan luego de 6 s. Si ambas fallas ocurren, todas las tres salidas se
energizan luego de sus respectivos retardos de tiempo.
Nota: si ambas luces incandescentes falla, todas las tres salidas se
energizarán. El relé y la salida contra fallas de luces intermitentes de
estado sólido se energizan luego de 6 s, y la salida contra fallas de luces
incandescentes de estado sólido se energiza al transcurrir 10 s.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Detección de corriente
toroidal
Monitoreo fiable y de bajo costo de las luces
incandescentes e intermitentes por medio de un CT
integrado y aislamiento a partir de un circuito monitoreado
Monitoreo de baliza con
control automático de
protección
Monitores de alarma para luces incandescentes
defectuosas y funcionamiento de las luces intermitentes
Una salida de alarma SPDT
aislada de 5 A más dos
salidas de alarma de voltaje
de línea de estado sólido
de 1 A
Al conectarlos a un sistema de monitoreo en el sitio,
brindan protección de monitoreo de balizas remoto de
conformidad con la FAA/FCC
Retardos de disparo fijos
para luces intermitentes (6 s)
y fallas en las luces (10 s)
Previene la activación de alarmas no deseadas
L1 N/L2
V = Voltaje
B = Baliza
F = Luces intermitentes
T = Toroide
BRC = Contactos de relé de
derivación para luces
intermitentes
AR = Relé de alarma FB
BR = Bobina de relé de
derivación
FL = LED de fallas en luces
intermitentes
LL = LED de fallas en luces
incandescentes
AXL = Bobina de relé de
alarma para luces
incandescentes
NOTA: el módulo de luces intermitentes
puede ser instalado en la línea o carga
lateral del sensor toroidal.
Información para pedir
MODELO VOLTAJE DE LÍNEA TIPO DE LUCES
FB120A 120 V CA Baliza incandescente
FB230A 230 V CA Baliza incandescente
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Especificaciones
Voltaje de entrada
FB120A 120 V CA ± 15 %
FB230A 230 V CA ± 15 %
Frecuencia de línea 50/60 Hz
Voltaje de conector de luces ± 10 %; 50/60 Hz
Salidas de alarma
Tipo 3 en total - 1 relé, 2 de estado sólido;
Un relé SPDT aislado con clasificación nominal de
5 A de corriente resistiva
Dos salidas de voltaje en línea de estado sólido con
clasificación nominal de 0,5 A de corriente uniforme,
5 A de corriente de inserción
Detección de fallas en
luces incandescentes
FB120A Para dos luces incandescentes de 620 W o 700 W
FB230A Para dos luces incandescentes de 500 W o 700 W
Retardos de disparo
Averías en luces intermitentes Fijo en 6 s; -0/+40 %
Averías en luces incandescentes Fijo en 10 s; -0/+40 %
Luces LED
Averías en luces incandescentes
(Rojas) Se iluminan cuando fallan una o ambas luces
Averías en luces intermitentes
(Rojas) Se iluminan cuando fallan las luces intermitentes
Protección
Sistema de circuitos Encapsulado
Montaje Montaje en superficie con dos tornillos n.º 6 (M3.5 x 0.6)
Dimensiones H 88,9 mm (3,5"); A 63,5 mm (2,5");
P 44,5 mm (1,75")
Terminación Bloqueo por barrera de 7 posiciones para cables de
0,5 mm2
(20 AWG) y 2,5 mm2
(14 AWG)
Entorno:
Temperatura de funcionamiento/
almacenamiento -55 °C a 60 °C/-55 °C a 85 °C
Peso ≅ 198 g (7 oz)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 47.
458 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Controles para iluminación de obstrucción y torres
www.littelfuse.com/scr490d
Diagrama de conexiones
SCR490D
Relevador de alarma para luces de obstrucción
Descripción
El SCR490D se utiliza para proporcionar monitoreo remoto del marcador
incandescente de funcionamiento uniforme y luces de obstrucción.
Cuatro interruptores integrados permiten al operario programar sistemas
de iluminación entre dos y nueve luces o un circuito de CA individual. El
SCR490D utiliza un sensor toroidal y un sistema de circuitos electrónico
para detectar fallas de una o más luces.
Funcionamiento
Cuando falla una luz, el SCR490D detecta una disminución en el flujo
de corriente. Luego, al transcurrir un retardo de tiempo fijo, transfiere la
información al modo de alarma. En modo de alarma, el indicador LED, el
relé de salida (contactos SPDT aislados) y una salida de estado sólido no
aislada son energizados. Al cambiar las luces defectuosas se restablecen
las salidas de alarma y el indicador LED. Para prevenir señales de alarma
falsas, se debe aplicar la alimentación al SCR490D al mismo tiempo en
que se energizan las luces.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Detección de corriente
toroidal
Monitoreo fiable y de bajo costo de marcador
incandescente e iluminación de obstrucción a través de un
CT integrado que además brinda aislamiento desde el
circuito de iluminación
Monitorea entre 2 y 9 luces Detecta luces de obstrucción defectuosas en un circuito de
CA individual
Una salida de alarma SPDT
aislada de 10 A más una
salida de alarma de voltaje de
línea de estado sólido de 1 A
Proporciona indicación de alarma y puede utilizarse
también para monitoreo remoto del sistema de iluminación
Retardo de disparo fijo (6 s) Previene la activación de alarmas no deseadas
Especificaciones
Funcionamiento
Número de luces 2-9 (seleccionable)
Vataje de las luces 116 W, luces incandescentes
Voltaje de luces nominal 120 o 130 V CA (seleccionable)
Voltaje monitoreado 120 V CA ± 3 %
Retardo de disparo ≅ 6 s fijo
Voltaje 120 V CA
Frecuencia de línea 50/60 Hz
Tolerancia
120 V CA - 20 % - 10 %
Salida de voltaje de línea
(Nominal de estado sólido) ≤ 125 V para operar una luz o alarma por separado
Salida de alarma aislada 10 A a 120 V CA o 30 V CC resistiva;
1/4 HP a 125 V CA; 1/2 HP a 250 V CA
Montaje Montaje en superficie con dos tornillos n.º 6 (M3.5 x 0.6)
Dimensiones H 88,9 mm (3,5"); A 63,5 mm (2,5");
P 44,5 mm (1,75")
Terminación Tornillos con abrazaderas cautivas para cables de
2,45 mm2
(14 AWG)
Sistema de circuitos Encapsulado
Temperatura de funcionamiento/
almacenamiento -55 °C a 65 °C/-55 °C a 85 °C
Humedad 95 % relativa, sin condensación
Peso ≅ 193 g (6,8 oz)
L1 N/L2
V = Voltaje
OL = Luces de obstrucción
T = Toroide
SS = Interruptor del selector
AXL = Alarma/Carga
auxiliar
Los contactos del relé están
aislados.
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 47.
©2018 Controladores y Relevadores de Protección de Littelfuse 459
Luces intermitentes y controles de iluminación en torres
Controles para iluminación de obstrucción y torres Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/scr490d
Diagrama de conexiones
SERIE SCR
Relevador de alarma para luces universales
Descripción
La serie SCR es un relé de alarma para luces universales diseñado
para detectar fallas de iluminación o luces de baliza incandescentes
permanentes o luces laterales permanentes. El sensor de corriente
toroidal brinda aislamiento y permite monitorear más de una línea
a la vez. La serie SCR se energiza cuando fallan una o más luces.
Monitoreará el funcionamiento de una a cuatro luces laterales y de
cuatro luces de baliza.
Funcionamiento
Cuando falla una luz, el SCR detecta una disminución en el flujo de
corriente. Luego de un retardo de tiempo fijo, el LED se ilumina y las
dos salidas de alarma se energizan. Las salidas y el LED se restablecen
al cambiar las luces defectuosas y la corriente regresa a su condición
nominal o cuando se aísla el voltaje de entrada. El SCR detectará luces
intermitentes abiertas, no detectará luces intermitentes ACTIVAS
constantemente (consulte la serie FB).
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Detección de corriente
toroidal
Brinda aislamiento del circuito de iluminación y permite
monitorear múltiples líneas de forma simultánea
Monitorea de 1 a 4 luces
laterales o hasta 4 luces
de baliza
Detecta baliza incandescentes defectuosas o luces de
obstrucción permanentes
Una salida de alarma SPDT
aislada de 10 A más una
salida de alarma de voltaje
de línea de estado sólido
de 1 A
Proporciona indicación de alarma y puede utilizarse para
monitoreo remoto del sistema de iluminación
Retardo de disparo fijo (6 s) Previene la activación de alarmas no deseadas
Número, voltaje y vataje
de luces seleccionable por
interruptor
Seleccionable por el usuario para satisfacer diversas
necesidades de aplicación con un solo relé
(SCR430T solamente)
L1 N/L2
L1 N/L2
DIAGRAMA DE CONEXIÓN DE LUCES DE BALIZA
DIAGRAMA DE CONEXIÓN DE LUCES DE OBSTRUCCIÓN
V = Voltaje
B = Luces de baliza
SS = Interruptor del
selector
T = Toroide
F = Luces intermitentes
AXL = Alarma/Carga
auxiliar
Los contactos del relé
están aislados.
V = Voltaje
SS = Interruptor del
selector
T = Toroide
AXL = Alarma/Carga
auxiliar
OL = Luces de
obstrucción
Los contactos del relé
están aislados.
Información para pedir
MODELO ENTRADA TIPO DE LUCES
SCR430T 120 V CA Incandescente
SCR630T 230 V CA Incandescente
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 47.
460 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Controles para iluminación de obstrucción y torres
www.littelfuse.com/scr
SERIE SCR
Rango de selección
SCR430T SCR630T
a. 620 W 700 W
b. 120 V
c. c.
a. 116 W
130 V
4L
3L
2L
1L
116 W
4L
3L
2L
1L
1.
2.
a. Vataje de luces - Seleccione el vataje de luces para las luces en uso.
b. Voltaje de luces - Seleccione el voltaje de luces indicado en estas
(SCR430T)
c. ENCENDIDO de luces - Seleccione el número de luces para activar durante
el funcionamiento normal. Solo es posible transferir hacia la derecha un
interruptor de luz a la vez.
Ejemplo de programación
SCR430T SCR630T
a. 620 W 700 W
b. 120 V
c. c.
a. 116 W
130 V
4L
3L
2L
1L
116 W
4L
3L
2L
1L
1.
2.
Ejemplo que se muestra: SCR430T-620 W en luces de 120 V CA, dos luces son
ENCENDIDAS durante el funcionamiento normal.
PASOS
1. Seleccione el vataje de luces: 116 o 620 W
2. Seleccione el número de luces para ENCENDER (1 a 4) durante el
funcionamiento normal. Solo un interruptor de luces puede estar
ENCENDIDO (A LA DERECHA) en cualquier momento.
Especificaciones
Funcionamiento
Monitoreo de luces
Capacidad (en las luces) 100 W 116 W 620 W 700 W
SCR430T Luces de 120 V CA 4 4 4 N/A
SCR630T Luces de 230 V CA N/A 4 N/A 4
Retardo de tiempo
Retardo de disparo Fijo de fábrica ≅ 6 s
Entrada
Tolerancia/Voltaje de entrada SCR430T - 120 V CA ± 10 %
SCR630T - 230 V CA ± 10 %
Frecuencia de línea 50/60 Hz
Salida Para conectar una alarma o luz de repuesto
Salida de voltaje de línea
(Nominal de estado sólido) ≤ 125 W a 120 V CA
≤ 250 W a 240 V CA
Salida de alarma aislada (SPDT) 10 A a 240 V CA o 30 V CC resistiva;
1/4 HP a 125 V CA; 1/2 HP a 250 V CA
Mecánica
Montaje Dos tornillos n.º 6 (M3.5 x 0.6)
Dimensiones H 88,9 mm (3,5"); A 63,5 mm (2,5");
P 44,5 mm (1,75")
Terminación Tornillos con abrazaderas cautivas para cables de
2,45 mm2
(14 AWG)
Protección
Sistema de circuitos Encapsulado
Entorno:
Temperatura de funcionamiento -55 °C a 65 °C
Peso ≅ 193 g (6,8 oz)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
©2018 Controladores y Relevadores de Protección de Littelfuse 461
Luces intermitentes y controles de iluminación en torres
Controles para iluminación de obstrucción y torres Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/fb9L
Diagrama de conexiones
FB9L
Relevador de alarma para luces universales
Descripción
La serie FB9L es un relé de alarma para luces universales diseñado para
detectar fallas de iluminación en luces de baliza tipo LED. Monitoreará
el funcionamiento entre una y ocho balizas conectadas a un módulo
auxiliar o luz intermitente individual y el funcionamiento de las luces
intermitentes. El relé de salida FB9L se energiza cuando falla una o más
luces. Todas las luces monitoreadas deben tener el mismo voltaje y
vataje. La salida de estado sólido de 0,5 A se energiza al detectar una falla
en las luces intermitentes.
Funcionamiento
Cuando una luz de baliza LED falla, el FB9L detecta una disminución en
el flujo de corriente. Luego de un retardo de disparo por falla en luces de
10 s, los contactos de relé SPDT aislado (4-5-6) y SPNO (3-1) no aislados
se energizan. Estos contactos se utilizan para indicar que ha ocurrido una
falla en una baliza. El indicador LED “L” integrado se ilumina en verde
durante el retardo de disparo y se ilumina en rojo luego de que el relé de
salida se energiza. Al conectarlo a un sistema de monitoreo en el sitio,
brinda monitoreo de balizas remoto de conformidad con la directriz FAAAC No: 150/5345-43E. 150/5345-43E
El FB9L además monitorea el funcionamiento de las luces intermitentes.
Si las luces intermitentes permanecen en la condición ENCENDIDO
o APAGADO por más de 6 s, la salida de estado sólido se energiza y
el indicador LED “F” integrado para fallas en luces intermitentes se
enciende en rojo. Esta salida se utiliza normalmente para energizar
un relé de derivación para luces intermitentes externo. Los contactos
del relé de derivación se utilizan para enrutar el voltaje sobre las luces
intermitentes defectuosas y para indicar una condición de alarma.
Nota: en sistemas de luces intermitentes individuales, y balizas
individuales, si las luces de baliza falla, se detectará un flujo de corriente
cero. Esto hará que la salida de fallas en luces intermitentes se energice
luego de 6 s y en consecuencia también las salidas de fallas en balizas
al transcurrir 10 s. Este es un fenómeno normal y puede esperarse en
cualquier momento que la corriente cero fluya a través del conductor
monitoreado.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Calibración automática Ahorran tiempo de instalación. No se requiere sintonía fina.
Monitoreo de baliza con
control automático de
protección
Monitores de alarma para luces LED defectuosas y
funcionamiento de las luces intermitentes
El número de balizas
monitoreadas es
seleccionable por interruptor
es de hasta 8 balizas
La selección del usuario permite una rápida configuración y
fácil adaptación en diversas aplicaciones
Voltaje universal
120-230 V CA Cumple un amplio rango de requerimientos de aplicación
Contactos de salida de
alarma SPDT aislados de
10 A
Proporcionan monitoreo de balizas remoto al conectarse a
un sistema de monitoreo en el sitio, de conformidad con las
directrices de la FAA
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
L1 N/L2
V = Voltaje
B = Baliza
F = Luces intermitentes
BRC = Contactos de relé de derivación para luces intermitentes
T = Toroide
AR = Relé de alarma FB
BR = Bobina de relé de derivación
FL = LED de fallas en luces intermitentes
LL = LED de fallas en luces estándar
AXL = Bobina de relé de alarma para luces
NOTA: el módulo de luces intermitentes puede ser instalado en la línea o carga lateral del sensor toroidal.
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 31.
462 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Controles para iluminación de obstrucción y torres
www.littelfuse.com/fb9L
FB9L
Especificaciones
Sensores
Rango de calibración
(total para todas las luces) 150 mA-8 A
Corriente máxima absoluta
(total para todas las luces) 15 A máx. (es posible que no calibre a un nivel
superior de 8 A)
Corriente de luces individual 150 mA-8 A (total para todas las luces ≤ 8 A)
Retardo de activación
Averías en las luces intermitentes Fijo en 6 s; -0/+40 %
Averías en las luces incandescentes Fijo en 10 s; -0/+40 %
Entrada
Tolerancia/Voltaje de entrada 120-230 V CA/± 15 %
Frecuencia de línea 50/60 Hz
Salida Para conectar una alarma o luz de repuesto
Salida de voltaje de línea (SPNO) 5 A a 240 V CA o 30 V CC resistiva;
1/4 HP a 125 V CA; 1/2 HP a 250 V CA
Salida de alarma aislada (SPDT) 10 A a 240 V CA o 30 V CC resistiva;
1/4 HP a 125 V CA; 1/2 HP a 250 V CA
Línea de estado sólido
Salida de voltaje (F) 0,5 A de corriente uniforme; 5 A de corriente de inserción
Mecánica
Montaje Un tornillo n.º 10 (M5 x 0.8)
Dimensiones H 76,7 mm (3"); A 50,8 mm (2");
P 41,7 mm (1,64")
Terminación Terminales de tornillo IP20 para cable 2,45 mm2
(14 AWG) o dos cables 1,3 mm2
(16 AWG)
Luces LED
Averías de luces
incandescentes/temporización/
alimentación (Bicolor) Se ilumina en rojo cuando falla uno o más luces
Averías en luces intermitentes
(Rojas) Se ilumina en rojo cuando fallan las luces
intermitentes
Protección
Sistema de circuitos Encapsulado
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Peso ≅ 111 g (3,9 oz)
FAA-AC Nro. 150/5345-43E
Tabla de indicadores
L Verde Entrada ACTIVA y calibrada
L Luces intermitentes
color verde
Retardo de activación
L Rojo Falla en luces
L Luces intermitentes
color rojo o verde
Calibrando
L Luces intermitentes
color rojo
No calibrado
F Rojo Falla de luces intermitentes
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
©2018 Controladores y Relevadores de Protección de Littelfuse 463
Luces intermitentes y controles de iluminación en torres
Controles para iluminación de obstrucción y torres Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/scr9L
Diagrama de conexiones
SCR9L
Relevador de alarma para luces universales
Descripción
La serie SCR9L es un relé de alarma para luces universales diseñado
para detectar fallas de iluminación en luces de baliza tipo LED o de
obstrucción intermitentes o fijas. La serie SCR9L se energiza cuando
fallan una o más luces. Monitoreará el funcionamiento de uno a
ocho balizas o luces de obstrucción. Todas las luces monitoreadas
deben tener el mismo voltaje y vataje. Al conectarlos a un sistema de
monitoreo en el sitio, brindan protección de monitoreo de luces remoto
de conformidad con la directriz FAA-AC Nro.: 150/5345-43E.
Funcionamiento
Cuando falla una luz, el SCR9L detecta una disminución en el flujo de
corriente. Luego de un retardo de disparo de 10 s, el LED se ilumina
y las dos salidas de alarma se energizan. Las salidas y el LED se
restablecen al reemplazar las luces defectuosas y se recalibra la unidad.
El SCR9L detectará luces intermitentes abiertas, no detectará luces
intermitentes ACTIVAS constantemente (refiérase a la serie FB). Cuando
se aísla el voltaje de entrada se desenergiza la salida y las luces LED. No
se varía la calibración.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Calibración automática Diseñado para utilizar con todo tipo de balizas tipo LED y
luces de obstrucción
Monitoreo de baliza con
control automático de
protección
El relé también generará una señal de alarma al detectar
una luz defectuosa (abierta)
El número de luces
monitoreadas es
seleccionable por interruptor,
hasta 8 luces
La selección del usuario permite una rápida configuración y
fácil adaptación en diversas aplicaciones
Voltaje universal
120-230 V CA Diseñado para utilizarse en la mayoría de aplicaciones
Contactos de salida de
alarma SPDT aislados de
10 A
Proporciona monitoreo de balizas remoto al conectarse a
un sistema de monitoreo en el sitio, tal como lo establece
la FAA
Indicación LED Proporciona estado de relé visual sobre funcionamiento,
alarma, retardo de disparo y calibración
Completamente
encapsulado Protege contra impactos, vibración y humedad
Accesorios
Riel DIN C103PM (AL)
Riel DIN en aluminio de 35 mm disponible en longitud
de 91,4 cm (36 in).
Adaptador de riel DIN P1023-20
Permite que el módulo sea montado en un riel tipo
DIN de 35 mm con dos tornillos n.º 10.
L1 N/L2
L1 N/L2
DIAGRAMA DE CONEXIÓN DE LUCES DE BALIZA
DIAGRAMA DE CONEXIÓN DE
LUCES DE OBSTRUCCIÓN
V = Voltaje
B = Luces de baliza
SS = Interruptor del selector
L = Indicador LED
F = Luces intermitentes
AXL = Alarma/Carga auxiliar
OL = Luces de obstrucción
SI = Entrada del sensor
H = Conexión viva CA auxiliar
“3” (2 A máx.)
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 513, Figura 31.
464 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Controles para iluminación de obstrucción y torres
www.littelfuse.com/scr9L
SCR9L
Calibración
Los relés de alarma deben ser calibrados en la instalación inicial y en el
momento de reemplazar las luces LED. Debido al desgaste de las luces
LED, se recomienda realizar una calibración cada 12 meses.
1. Aísle el voltaje de entrada
2. Mueva el interruptor de calibración hacia la posición “Off”
(apagado)
3. Vuelva a aplicar el voltaje de entrada
4. Los LED se iluminarán en rojo para indicar que la unidad está lista
para la calibración
5. Inspeccione visualmente la iluminación de la estructura para
asegurarse de que todas las luces incandescentes e intermitentes
(si las utiliza) estén funcionando correctamente
6. Aísle el voltaje de entrada
7. Ajuste el interruptor de selector de luces al número correcto de
luces para monitorear (ver diagrama de ajuste a continuación)
8. Vuelva a aplicar el voltaje de entrada
9. Las luces LED deberían iluminarse en rojo
10. Mueva el interruptor de calibración a la posición “ON”
11. Las luces LED se iluminarán entre rojo y verde
12. Las luces LED se iluminarán en verde durante 30 s. Se ha
completado la calibración
Error de calibración
Si las luces LED parpadean dos veces en color rojo, significa que hubo un
error de calibración. Aísle el voltaje de entrada y repita los pasos 6 a 8.
Notas:
a. El monitoreo de balizas tipo LED y luces de obstrucción LED
simultáneo no es posible con la Serie SCR9L.
b. Este relé de alarma no está diseñado para monitorear luces
incandescentes.
c. Cuando se aplica el voltaje de entrada cuando el interruptor de
calibración está en posición desactivada, se borra la configuración
de calibración anterior. Las luces LED se iluminarán en rojo. Los
relés de salida están apagados y la unidad no detectará fallas en
las luces.
d. Con esta unidad solo se puede monitorear una baliza tipo LED
de temperatura compensada. No es posible monitorear una
combinación de balizas tipo LED estándar y de temperatura
compensada.
Ejemplo de ajuste
OFF ON
SCR9L
7.
Ejemplo que se muestra: dos luces SCR9L encendidas durante el
funcionamiento normal.
Tabla de indicadores
L Verde Entrada ACTIVA y calibrada
L Luces intermitentes
color verde
Retardo de activación
L Rojo Falla en luces
L Luces intermitentes
color rojo o verde
Calibrando
L Luces intermitentes
color rojo
No calibrado
Especificaciones
Sensores
Rango de calibración
(total para todas las luces) 150 mA-8 A
Corriente máxima absoluta
(total para todas las luces) 15 A máx. (es posible que no calibre a un nivel
superior de 8 A)
Corriente de luces individual 150 mA-8 A (total para todas las luces < 8 A)
Retardo de tiempo
Retardo de disparo Fijo de fábrica ≅10 s
Entrada
Tolerancia/Voltaje de entrada 120-230 V CA ± 15 %
Frecuencia de línea 50/60 Hz
Salida Para conectar una alarma o luz de repuesto
Salida de voltaje de línea (SPNO) 5 A a 240 V CA o 30 V CC resistiva;
1/4 HP a 125 V CA; 1/2 HP a 250 V CA
Salida de alarma aislada (SPDT) 10 A a 240 V CA o 30 V CC resistiva;
1/4 HP a 125 V CA; 1/2 HP a 250 V CA
Voltaje de entrada auxiliar (H) ≤ 2 A a 230 V CA
Mecánica
Montaje Un tornillo n.º 10 (M5 x 0.8)
Dimensiones H 76,7 mm (3"); A 51,3 mm (2,02");
P 41,7 mm (1,64")
Terminación Terminales de tornillo IP20 para cable 2,45 mm2
(14 AWG) o dos cables 1,3 mm2
(16 AWG)
Protección
Sistema de circuitos Encapsulado
Entorno:
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-40 °C a 85 °C
Peso ≅ 111 g (3,9 oz)
Calibrar
APAGAR ENCENDIDO
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
©2018 Controladores y Relevadores de Protección de Littelfuse 465
Luces intermitentes y controles de iluminación en torres
Controles para iluminación de obstrucción y torres Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/pcr
Diagrama de conexiones
SERIE PCR
Controlador de fotografías
Descripción
La serie PCR de controles de fotografía es una combinación de un
sistema de circuito electrónico de precisión, relé electromecánico y
acoplamiento de plástico moldeado único en su clase. Diseñado y
fabricado para satisfacer las demandas de los requisitos más estrictos
de control de iluminación de obstrucción y torres, cada unidad viene
calibrada desde fábrica para cumplir las especificaciones de la FAA y
la FCC. El circuito electrónico, el contactor de salida y el bloque de
terminal forman un conjunto dentro de un acoplamiento de plástico
ubicado en la parte frontal. El soporte de base moldeado en la base
inferior del acoplamiento permite una conexión fácil de instalaciones
nuevas y existentes. Disponible con o sin caja de empalme en fundición
de aluminio.
Funcionamiento
Cuando la intensidad de luz detectada cae por debajo del nivel de
disparo para energización, el relé de salida se energiza. En cambio,
cuando la intensidad aumenta sobre el nivel de disparo para
desenergización, el relé de salida se desenergiza.
Características y beneficios
CARACTERÍSTICAS BENEFICIOS
Acoplamiento de plástico
ABS con empaque
Resistente contra entornos externos severos y protege el
circuito contra daños ocasionados por la humedad
Dos contactos de relé
de 20 A
Permite el control directo de un circuito de iluminación sin
un contactor por separado
Retardo de tiempo fijo Elimina las vibraciones en el contacto
Sensor de imagen Proporciona un funcionamiento del circuito de iluminación
automática de forma permanente
Información para pedir
MODELO ENTRADA DESCRIPCIÓN
SUSTITUYE
Hughey
& Phillips Crouse Hinds
PCR10 120 V CA Control de imagen sin
tablero de aluminio N/A N/A
PCR11 120 V CA Control de imagen sin
tablero de aluminio PC800 120V PEC52010
PCR12 230 V CA Control de imagen con
tablero de aluminio N/A N/A
PCR13 230 V CA Control de imagen con
tablero de aluminio PC800 240V PEC52010-1
Si no encuentra la pieza que necesita, llámenos al 800-843-8848 para solicitar un producto específico.
Dashed lines are internal connections.
ons. Dashed lines are internal connections.
ions.
*Empalme suministrado por el cliente
Las líneas discontinuas
son conexiones internas.
Dos cables de conmutación
de servicio para una línea
directa solamente.
Tres cables de
conmutación de
servicio para ambas
líneas directas.
Dos cables de servicio
con cargas repartidas.
CARGA 1
CARGA 2
NEUTRO
NEUTRO
ALIMENTACIÓN
ELÉCTRICA 2
ALIMENTACIÓN
ELÉCTRICA 1
DIRECTA
DIRECTA
NEUTRO
NEUTRO
CARGA
120 V CA
< 20 A
CARGA
120 V CA
< 20 A
CARGA
120 V CA
< 20 A
CARGA
230 V CA
< 20 A
CARGA
120 V CA
< 20 A
CARGA
120 V CA
< 20 A
LÍNEA
120 V CA
LÍNEA
120 V CA
LÍNEA DE 240 V CA
LÍNEA
120 V CA
LÍNEA
230 V CA
LÍNEA
120 V CA
NEUTRO
NEUTRO
NEUTRO
NEUTRO
CARGA 1
CARGA 2
NEUTRO
NEUTRO
ALIMENTACIÓN
ELÉCTRICA 2
ALIMENTACIÓN
ELÉCTRICA 1
CARGA 1
CARGA 2
NEUTRO
NEUTRO
ALIMENTACIÓN
ELÉCTRICA 2
ALIMENTACIÓN
ELÉCTRICA 1
CARGA 1
CARGA 2
NEUTRO
NEUTRO
ALIMENTACIÓN
ELÉCTRICA 2
ALIMENTACIÓN
ELÉCTRICA 1
Dos cables de conmutación
de servicio para ambas líneas
(sin neutro).
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para conocer el plano de dimensiones, consulte: Apéndice, página 514, Figura 45.
466 ©2018 Controladores y Relevadores de Protección de Littelfuse
Luces intermitentes y controles de iluminación en torres
Conocimientos aplicados | Respuestas entregadas Controles para iluminación de obstrucción y torres
www.littelfuse.com/pcr
SERIE PCR
Especificaciones
Indicación Los LED indican el paso de energía
Niveles de activación de luces
(Calibrado desde fábrica) Energizado: ≤ 35 fc
Desenergizado ≥ 60 fc
Voltaje 120 V CA o 230 V CA
Frecuencia de línea 50/60 Hz
Tolerancia
120 y 230 V CA -20 %-10 %
Clasificación de la salida Dos contactos SPST NO de 20 A
1 HP a 120 V CA
2,5 HP a 240 V CA
Terminación Terminales de tornillo para cables n.º 8 (M4 x 0.7)
AWG
Dimensiones H 159,51 mm (6,28"); A 127 mm (5");
P 131,75 mm (5,19")
Montaje Acoplamiento de plástico ABS con empaque.
Múltiples orificios ciegos para montaje opcional de
tableros eléctricos en fundición de aluminio Crouse
Hinds o Hughey & Phillips.
Temperatura de funcionamiento/
almacenamiento -40 °C a 60 °C/-55 °C a 85 °C
LUCES INTERMITENTES Y CONTROLES DE ILUMINACIÓN EN TORRES
13
Para obtener más información…
acerca de retroadaptadores, adaptadores de
montaje en panel y otros accesorios, visite
Littelfuse.com/relayaccessories
©2018 Controladores y Relevadores de Protección de Littelfuse 467 www.littelfuse.com/relayaccessories
Accesorios
Conocimientos aplicados | Respuestas entregadas
ACCESORIOS
Software............................................................................................................468
Eléctricos...........................................................................................................469
Módulos de referencia de conexión a tierra, acopladores de alta tensión
y probadores de relevadores.............................................................................472
Indicación remota..............................................................................................473
Módulos y adaptadores de comunicación........................................................476
Adaptadores y terminaciones...........................................................................477
Control de nivel de líquidos..............................................................................478
Transformadores de corriente (CT)
CT Guía de selección.........................................................................................479
Transformadores de corriente...........................................................................480
Transformadores de medición e instrumentación ...........................................481
Gráfica de dimensionamiento de transformadores de corriente......................482
Carcasas y adaptadores de montaje
Adaptadores de montaje en panel....................................................................483
Adaptadores de montaje en superficie y en riel DIN........................................485
Abrazaderas y sujetadores a presión................................................................486
Carcasas y cubiertas herméticas......................................................................487
Conectores........................................................................................................488
ACCESORIOS
14
www.littelfuse.com/relayaccessories 468 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Conocimientos aplicados | Respuestas entregadas Software
SOFTWARE
SOFTWARE
Producto Características Accesorio para
Solutions-M
Software de interfaz
de relevador
Brinda capacidad de configurar y monitorear redes Modbus. Las
características del software incluyen registro de datos, monitoreo
de datos en tiempo real, y monitoreo de fallas y eventos. Es posible
añadir y configurar dispositivos manualmente o por medio del software
que escanea una red existente para identificar dispositivos que pueden
ser utilizados como tal o ser reconfigurados por el usuario. Los puntos
de ajuste para cada dispositivo pueden ser procesados y descargados
para facilitar el monitoreo y la reconfiguración.
RS485
Redes TCP/IP
Dispositivos MotorSaver y
PumpSaver
SE-COMM-RIS
Software de interfaz
de relevador
Proporciona acceso remoto a funciones de medición, control,
registro de datos y programación. Los puntos de ajuste pueden ser
configurados individualmente, descargarlos como un archivo y graficar
las curvas de protección. Los datos calculados pueden ser analizados o
almacenados para estudiarlos más adelante.
FPU-32 FPS
MPS MPU-32
SE-FLASH
Servicio de actualización de
Firmware
Se utiliza para actualizar el firmware del relevador y añadir nuevas
características.
FPU-32 FPS
MPS MPU-32
EL731
SE-MON330
Software de interfaz de
relevador
Se utiliza para recibir datos desde el SE-330. Muestra los puntos de
ajuste del relevador y los valores calculados, e incluye el registro de
datos de información según un intervalo seleccionable.
SE-330 SE-330AU
SE-330HV
VMPU
Motor virtual
relevador de seguridad
Permite al usuario desplazarse a través del menú del relevador de
seguridad de motor MPU-32. MPU-32
VMPS
Sistema de
protección de motores virtual
Permite al usuario desplazarse a través del menú del sistema de
protección de motores MPS. MPS
VFPU
Relevador de seguridad del
alimentador virtual
Permite al usuario desplazarse a través del menú del relevador de
seguridad del alimentador FPU-32. FPU-32
Tutorial del MPU-32
Tutorial de capacitación
autónoma en línea del MPU-32
Tutorial de capacitación autónoma en línea para la programación del
MPU-32. MPU-32
Los Relevadores de protección y sistemas de alarma se
suministran con software gratuito. El software simplifica la
programación y permite al usuario guardar archivos de puntos
de ajuste y reutilizarlos en aplicaciones similares.
El software brinda capacidad de cambiar parámetros y observar
el impacto en las curvas de protección de corriente vs tiempo.
Por otra parte, permite ingresar curvas de otro dispositivo para
ver su coordinación simple.
ACCESORIOS
14
©2018 Controladores y Relevadores de Protección de Littelfuse 469 www.littelfuse.com/relayaccessories
Accesorios
Eléctricos Conocimientos aplicados | Respuestas entregadas
ELÉCTRICOS
ACCESORIOS ELÉCTRICOS
Producto Características Accesorio para
PGA-1100.0010
Unidad lógica de diodos
Se utiliza en instalaciones con más de un interruptor y más
de un relevador contra arco eléctrico Littelfuse. Separa las
rutas de disparo para que los interruptores se activen de
forma independiente entre ellos.
Para obtener la hoja de datos detallada e información sobre pedidos,
visite www.littelfuse.com/pga1100
AF0500 D0920 PGR-8800
D1000
P1004-XX-(X)
Versa-Pot
Potenciómetro industrial montable en panel, recomendado
para ajuste del retardo de tiempo remoto. El eje tiene
ranuras para ajuste con destornillador y está cerrado para
ajuste manual antideslizante. Compatible con VersaKnob o Lock Shaft. Puede solicitarlo con dos cables de
203,2 mm (8 in) con soldadura para terminales de conector
rápido hembra y base (giro a la derecha para aumentar) en
los otros extremos para series con el sufijo -X al final del
número de parte.
Especificaciones
Clasificación nominal 0,25 W a 55 °C
Adaptador Lineal
Rotación del eje 300° ± 5°
Tolerancia ± 10 %
P1004-95 y P1004-95-X:
Consulte la hoja de datos individual para ver
la compatibilidad con aplicaciones
P1004-174 y P1004-175:
Serie PHS
P1004-16 y P1004-16-X:
Series: ERDM ERDI ERD3 TRB TRM
TRS TS1 TS6
P1004-15, P1004-14, P1004-13, P1004-12, y
P1004-12-X:
Series: ORB ORM ORS TAC1 THD7
TRB TRM TRS TS1 TS2
TS4 TS6 TSD7 TSU2000
NÚMERO DE PARTE CON CONDUCTORES VALOR
P1004-199 50 kΩ
P1004-174 100 KΩ
P1004-175 200 KΩ
P1004-95 P1004-95-X 100 kΩ
P1004-17 500 kΩ
P1004-16 P1004-16-X 1 MΩ
P1004-15 1,5 MΩ
P1004-14 2 MΩ
P1004-12 P1004-12-X 3 MΩ
P1004-13 5 MΩ
P0700-7
Versa-Knob
Versa-Knob está diseñada para para ejes de 6,35 mm
(0,25 in) de Versa-Pot. Acabado negro industrial
semibrillante.
P1004-XX-(X)
P0700-8
Perno de bloqueo
Compatible con ejes de potenciómetro de 6,35 mm
(0,25 in). Se bloquea apretando una tuerca en cuatro
bases cónicas/ranuradas. La presión sobre los pernos
de bloqueo impide los ajustes involuntarios. Acabado de
latón niquelado.
P1004-XX-(X)
P1004-9
P1004-10
P1004-31
Mini-Pot
Potenciómetro industrial de alta calidad para ajuste de
retardo de tiempo remoto. El eje se extiende a lo largo del
orificio central del temporizador para facilitar el montaje
en panel. Utilice abrazaderas de montaje pequeñas para
instalar el temporizador. Ajuste por destornillador o perilla
pequeña. Puede solicitarlo con dos cables de 76,2 mm
(3 in) con soldadura para terminales de conector rápido
hembra y base (giro a la derecha para aumentar) en los
otros extremos para series con el sufijo -X al final del
número de parte.
Especificaciones
Clasificación nominal 0,25 W a 55 °C
Adaptador Lineal
Rotación del eje 300° ± 5°
Tolerancia ± 10 %
Series: TAC1 TS1 TS2
TS4 TS6 TSD7
TSU2000
NÚMERO DE PARTE VALOR
P1004-9 500 kΩ
P1004-10 1 MΩ
P1004-31 3 MΩ
P0700-21
Mini-Knob
Versa-Knob está diseñada para para ejes de 6,35 mm
(0,25 in) de Versa-Pot. Acabado negro industrial
semibrillante.
P1004-XX-(X)
ACCESORIOS
14
Para ver la hoja de datos detallada, consulte la pág. 81
www.littelfuse.com/relayaccessories 470 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Conocimientos aplicados | Respuestas entregadas Eléctricos
ELÉCTRICOS
ACCESORIOS ELÉCTRICOS
Producto Características Accesorio para
P0200-19
Disipador de calor
compuesto 2 gramos
P0200-20
Disipador de calor
compuesto
100 gramos
El contenedor o paquete individual de disipador de calor
compuesto consta principalmente de óxido de zinc cuya
vida útil es de 12 meses (ver fecha de vencimiento en
etiqueta). P0200-19 en un temporizador enchapado de
corriente alta de 50,8 x 50,8 mm (2 x 2 in). P0200-20 se
adapta a +50 unidades.
Cualquier temporizador chapado o luces
intermitentes de 50,8 x 50,8 mm (2 x 2 in).
P1015-18
Adaptador de tornillo
de conexión rápida
Terminal de adaptador de tornillo diseñada para utilizarse
con todos los módulos con de conector rápido macho de
6,35 mm (0,25 in). El terminal de tornillo acepta terminales
esféricos o de paleta.
Módulos con terminales de conexión
rápida de 6,35 mm (0,25 in).
Consulte la hoja de datos individual para
determinar su compatibilidad.
P1015-13
P1015-64
P1015-14
Terminales hembra de
conexión rápida
Estos terminales hembra de 6,35 mm (0,25 in) son
fabricados con un tonel aislador para brindar resistencia a
la deformación.
Consulte la hoja de datos individual para
determinar su compatibilidad.
P0400
Diales de ajuste de tiempo
Diales para utilizar con Versa-Pot remoto y Mini-Pot de
montaje en panel. Impresos al respaldo de la pantalla en
plástico claro para evitar daños en la imagen impresa.
P1004-9 P1004-10 P1004-12
P1004-13 P1004-16 P1004-31
P1004-95
NÚMERO DE PARTE RANGO INCREMENTOS
P0400-12 0,05-1 s 0,1 s
P0400-86 0,1-10 min 1 min
P0400-82 0,1-10 s 1 s
P0400-17 1-30 s 5 s
P0400-83 1-60 s 10 s
P0400-27 0 - 10 MRD*
*Dial de referencia multiplicador
VTPXX
VTP
La serie VTP se instala en módulos con terminales de
ajuste en línea. Clasificación nominal de 0,25 W a 55 °C.
Disponible en valores de resistencia de 5 kΩ a 5 MΩ
Series: TAC1 THD7 THDM TS1
TS2 TS4 TS6 TSD7
NÚMERO DE PARTE VALOR RT RANGO NÚMERO DE PARTE VALOR RT RANGO
VTP0E 250 kΩ 0,5-20 s VTP3L 2 MΩ 0,1-4 min
VTP1B 0,5 MΩ 0,05-3 s VTP4B 3 MΩ 0,05-3 s
VTP1C 0,5 MΩ 0,1-10 s VTP4F 3 MΩ 0,5-60 s
VTP1D 0,5 MΩ 0,5-10 s VTP4J 3 MΩ 2-180 s
VTP2A 1 MΩ 0,05-1 s VTP4P 3 MΩ 1-100 min
VTP2C 1 MΩ 0,1-10 s VTP5G 5 MΩ 1-100 s
VTP2E 1 MΩ 0,5-20 s VTP5K 5 MΩ 10-1000 s
VTP2F 1 MΩ 0,5-60 s VTP5N 5 MΩ 0,1-10 min
VTP2J 1 MΩ 2-180 s VTP5P 5 MΩ 1-100 min
VTP2P 1 MΩ 1-100 min VTPDF 50 KΩ 0,5-60 s
VTP3B 2 MΩ 0,05-3 s
ACCESORIOS
14
©2018 Controladores y Relevadores de Protección de Littelfuse 471 www.littelfuse.com/relayaccessories
Accesorios
Eléctricos Conocimientos aplicados | Respuestas entregadas
ELÉCTRICOS
ACCESORIOS ELÉCTRICOS
Producto Características Accesorio para
LPSM003ZXID
Portafusible con función de
indicación
LPSM003Z
Portafusible sin función de
indicación
Los portafusibles Littelfuse POWR-SAFE, tipo frente
muerto, proporcionan una óptima protección para fusibles
Clase CC y microfusibles. 600 V CA/CC
Series: DLMU HLMU PLM
PLMU PLR PLS
TVM TVW WVM
0KLK002.T
Fusible Midget (2 amperios)
Fusible de 10 x 38 de activación rápida, alta capacidad de
corte, y de tipo limitador de corriente. 600 V CA/500 V CC FH3P LPSM003ZXID LPSM003Z
VRM6048
Monitor de voltaje
Módulo de accesorio
El módulo de accesorio VRM6048 permite que el monitor
de voltaje detecte un voltaje trifásico de 550 hasta un
voltaje de línea de 600 V CA.
Ajuste Si el voltaje de línea calculado es de
575 V CA, realice la conexión como
se indica en la imagen y ajuste o
seleccione el monitor de voltaje para
un funcionamiento de 460 V CA.
Paquete Acoplamiento moldeado con sistema
de circuitos encapsulado
Montaje Montaje de superficie con un tornillo
plástico n.º 10 (M5 x 0.8). Puede ser
instalado en riel DIN utilizando un
adaptador P1023-20.
Terminación Terminales de tornillo con abrazaderas
para cable cautivo para cable
n.º 12 AWG.
Funcionamiento -40 °C a 70 °C
Almacenamiento -40 °C a 85 °C
Humedad 95 % relativa, sin condensación
Voltaje Entrada Salida*
600 V CA 480 V CA
575 V CA 460 V CA
550 V CA 440 V CA
*El VRM6048 debe ser conectado como se indica en la imagen. Si el
monitor de voltaje se desconecta, el voltaje de salida VRM iguala al
voltaje de entrada.
Series: PLM
PLR
PLS
TVM
TVW
(fabricados a partir de
diciembre de 2003)
Módulo VRM Monitor de voltaje
575 V CA → 460 V CA
V150LA10AP
Varistor LA
La serie V150LA10AP, supresores de sobretensión
transitoria, son varistores radiales con plomo (MOV) que
están diseñados para ser operados de forma continua
entre líneas de alimentación CA. Estos varistores con
certificación UL requieren un espacio de instalación
realmente pequeño.
Cualquiera de nuestros productos operan
entre 150 V CA y 200 V CC.
PRODUCTO
MÁX. VOLTAJE DE
FUNCIONAMIENTO
CORRIENTE DE
IMPULSOS MÁXIMA
CON CORRIENTE DE
ONDA DE 80,20 μs
(A)
VOLTAJE DEL VARISTOR EN
CORRIENTE DE PRUEBA DE
1 MA CC
VOLTAJE PASANTE PICO CON
ONDA DE 80,20 μs CAPACITANCIA DIÁMETRO (TAMAÑO)
DEL DISCO (MM)
(V) CA (V) CC MÍN. (V) MÁX. (V) VC (V) 1PK (A)
V150LA10AP 150 200 4500 216 264 395 50 800 14
ACCESORIOS
14
www.littelfuse.com/relayaccessories 472 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Módulos de referencia de conexión a tierra, acopladores de alta tensión y probadores de relevadores Conocimientos aplicados | Respuestas entregadas
MÓDULOS DE REFERENCIA DE CONEXIÓN A TIERRA
Producto Características Accesorio para
SE-GRM024
Módulo de referencia a tierra
Se conecta el relevador SE-601 a una estación no conectada a tierra de
24 V CC. SE-601
SE-GRM048
Módulo de referencia a tierra
Se conecta el relevador SE-601 a una estación no conectada a tierra de
48 V CC. SE-601
SE-GRM125
Módulo de referencia a tierra
Se conecta el relevador SE-601 a una estación no conectada a tierra de
125 V CC. SE-601
SE-GRM250
Módulo de referencia a tierra
Se conecta el relevador SE-601 a una estación no conectada a tierra de
250 V CC. SE-601
SE-GRM500
Módulo de referencia a tierra
Se conecta el relevador SE-601 a una estación no conectada a tierra de
500 V CC. SE-601
SE-GRM780
Módulo de referencia a tierra
Se conecta el relevador SE-601 a una estación no conectada a tierra de
780 V CC. SE-601
SE-GRM1000
Módulo de referencia a tierra
Se conecta el relevador SE-601 a una estación no conectada a tierra de
1000 V CC. SE-601
ACOPLADORES DE ALTA TENSIÓN
Producto Características Accesorio para
PGH-5000
Acopladores de alta tensión
Permite conectar sistemas de 5 kV a un relevador. PGR-6100
PGR-3200
PGH-6000
Acopladores de alta tensión
Permite conectar sistemas de 6 kV a un relevador. PGR-6100
PGR-3200
PROBADORES DE RELEVADOR DE SEGURIDAD
Producto Características Accesorio para
SE-100T
Probador de relevador de fallas
de conexión a tierra
Prueba el nivel de captación de corriente para protección contra fallas
de conexión a tierra. Prueba todo el circuito para identificar fallas de
conexión a tierra.
Cualquier relevador o subestación,
MCC, Paneles de Distribución
Centrales, paneles de control y bancos
de prueba
SE-400
Unidad de prueba de relevador
de fallas de conexión a tierra
Prueba el nivel de captación de corriente, el retardo de tiempo y
la coordinación para protección contra fallas de conexión a tierra.
Prueba todo el circuito para identificar fallas de conexión a tierra.
Cualquier relevador o subestación,
MCC, Paneles de Distribución
Centrales, paneles de control y bancos
de prueba
MÓDULOS DE REFERENCIA DE CONEXIÓN A TIERRA, ACOPLADORES DE ALTA TENSIÓN Y PROBADORES DE RELEVADORES
ACCESORIOS
14
©2018 Controladores y Relevadores de Protección de Littelfuse 473 www.littelfuse.com/relayaccessories
Accesorios
Indicación remota Conocimientos aplicados | Respuestas entregadas
MEDIDORES Y MÓDULOS DE ENTRADA
MEDIDORES E INDICACIÓN REMOTA
Producto Características Accesorio para
RK-105
Indicación remota y conjunto
de restablecimiento
Indicación remota de montaje en panel y restablecimiento con
clasificación NEMA 1.
SE-105
SE-107
RK-105I
Conjunto de indicación
remota
Indicación remota de montaje en panel con clasificación NEMA 1. SE-105
SE-107
RK-102
Indicación remota industrial y kit
de restablecimiento
Indicación remota de montaje en panel y restablecimiento, montaje
estándar de 22 mm con clasificación NEMA 4 y NEMA 13.
SE-105
SE-107
RK-132
Indicación remota industrial y kit
de restablecimiento
Indicación remota de montaje en panel y restablecimiento, montaje
estándar de 22 mm con clasificación NEMA 4 y NEMA 13.
SE-134C
SE-135
SE-145
RK-325
Indicación remota y conjunto de
restablecimiento
Indicación remota de montaje en panel y restablecimiento con
clasificación NEMA 1. SE-325
MÓDULOS DE ENTRADA
Producto Características Accesorio para
MPS-RTD
Módulo de entrada
de temperatura
Proporciona 8 entradas programables para conectar unidades Pt100, Ni100,
Ni120, y Cu10 RTD.
MPU-32
MPS
MPS-DIF
Módulo de corriente
diferencial
Añade protección de diferencial de motor, compatible con conexiones de
transformador de corriente finales y de balance central.
MPU-32
MPS
MPU-CIM
Módulo de entrada
de corriente
Interfaz entre transformadores de corriente y relevadores de la Serie MPU32 o FPU-32. Reduce el peligro potencial de CT abiertos.
MPU-32
FPU-32
PGA-LS10
Sensor de puntos
El sensor de luz en línea recta detecta un arco eléctrico hasta de
3 kA dentro de una media esfera de 2 m. Los LED integrados indican
constantemente el estado del sensor o el estado de disparo.
PGR-8800
AF0500
PGA-LS20
Sensor de fibra óptica
Se utiliza para detectar luces y coordinar con la detección de corriente para
eliminar activaciones no deseadas. 8 m (26,2 ft) activo; 10 m (32,8 ft) total.
PGR-8800
AF0500
PGA-LS30
Sensor de fibra óptica
Se utiliza para detectar luces y coordinar con la detección de corriente para
eliminar activaciones no deseadas. 18 m (59 ft) activo; 20 m (66 ft) total.
PGR-8800
AF0500
A0200/A0300
Sensor de luces
El sensor de luz en línea recta detecta un arco eléctrico hasta de 3 kA
dentro de una media esfera de 2 m. Disponible tanto en 180˚ como en 360˚. D0920
A0220
Sensor de punto para
detección de arco eléctrico
El sensor de luz en línea recta detecta un arco eléctrico hasta de 3 kA dentro
de una media esfera de 2 m. Disponible con un cable de 10 o 15 m. AF0500 D0920
PGR-8800 D1000
LCSC10T12
Sensor de corriente toroidal
Monitoreo remoto de corrientes hasta de 50 A.
Diámetro interior de 9,14 mm (0,36") Serie DCSA
ACCESORIOS
14
Para ver la hoja de datos detallada e información para pedir, consulte la pág. 80
www.littelfuse.com/relayaccessories 474 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Conocimientos aplicados | Respuestas entregadas Indicación remota
MEDIDORES E INDICACIÓN REMOTA
Producto Características Accesorio para
RK-325I
Conjunto de
indicación remota
Indicación remota de montaje en panel con clasificación NEMA 1. SE-325
RK-302
Indicación remota y kit
de restablecimiento
Indicación remota de montaje en panel y restablecimiento, montaje
estándar de 22 mm con clasificación NEMA 4 y NEMA 13. SE-325
RK-332
Indicación remota y kit
de restablecimiento
Indicación remota de montaje en panel y restablecimiento, montaje
estándar de 22 mm con clasificación NEMA 4 y NEMA 13.
SE-330 SE-330AU
SE-330HV
PGA-0500
Medidor de porcentaje (%)
de corriente analógico
Medidor analógico de montaje en panel que muestra la corriente de falla en
la conexión a tierra como un porcentaje del punto de ajuste.
SE-601
PGR-4300
PGR-6100
SE-701
SE-703
SE-704
PGA-0510
Medidor de ohmios analógico
Ohmímetro de montaje en panel que indica la resistencia de aislamiento de
0 Ω al infinito.
PGR-3200 PGR-6100
PGR-6101-120
RESISTORES DE DETECCIÓN DE CORRIENTE
Producto Características Accesorio para
ER-600VC (PGE-600V)
Resistor de detección
Se utiliza en sistemas de hasta 1 kV. (Funcionamiento continuo) SE-330 SE-325
SE-330AU
SE-MRE-600
Carcasa Se utiliza en acoplamientos exteriores. (ER-600VC se vende por separado) ER-600VC
ER-5KV (PGE-05KV)
Resistor de detección
Se utiliza en sistemas de hasta 5 kV. (Funcionamiento continuo) SE-330 SE-325
SE-330AU
ER-5WP (PGE-05WV)
Resistor de detección
Se utiliza en sistemas de hasta 5 kV, incluye terminales protegidos
contra climas severos y para uso en acoplamientos exteriores.
(Funcionamiento continuo)
SE-330 SE-325
SE-330AU
ER-15KV (PGE-15KV)
Resistor de detección
Se utiliza en sistemas de hasta 15 kV. (Funcionamiento discontinua) SE-330 SE-325
SE-330AU SE-330HV
ER-25KV (PGE-25KV)
Resistor de detección
Se utiliza en sistemas de hasta 25 kV. (Funcionamiento discontinua) SE-330 SE-325
SE-330AU SE-330HV
ER-35KV (PGE-35KV)
Resistor de detección
Se utiliza en sistemas de hasta 35 kV. (Funcionamiento discontinua) SE-330 SE-330AU
SE-330HV
ER-72KV (PGE-72KV)
Resistor de detección
Se utiliza en sistemas de hasta 72 kV. (Funcionamiento discontinua) SE-330HV
MEDIDORES Y RESISTORES DE DETECCIÓN DE CORRIENTE
ACCESORIOS
14
©2018 Controladores y Relevadores de Protección de Littelfuse 475 www.littelfuse.com/relayaccessories
Accesorios
Indicación remota Conocimientos aplicados | Respuestas entregadas
MONITOREO E INDICACIÓN REMOTOS
MONITORES E INDICADORES REMOTOS
Producto Características Accesorio para
RM1000
RM1000-3R
RM1000 NEMA 4
Dispositivo de monitoreo
de motores
Dispositivo de monitoreo de motores que se utiliza en conjunto
con la familia de productos 777 (no incluye la Serie P1), la familia
de productos 77C y los monitores de voltaje 601, a través del
protocolo Modbus con un módulo de comunicaciones. El sistema
de administración de motores RM1000/777 combina la insuperable
protección de motores electrónicos y el monitoreo de motores fácil de
utilizar.
Para ver la hoja de datos detallada, visite www.littelfuse.com/rm1000
Serie 777
Serie 77C
Serie 601
RM2000
RM2000CBM+
RM2000-RTDW
Dispositivo de monitoreo
de motores
Dispositivo de monitoreo de motores que se utiliza en conjunto con
la familia de productos 777 (excluyendo la Serie P1), la familia de
productos 77C y los monitores de voltaje Modelos 601, a través de
protocolo Modbus con un módulo de comunicaciones. El sistema
de administración de motor RM2000/777 combina la insuperable
protección de motores electrónicos y el monitoreo de motores fácil
de utilizar.
Para ver la hoja de datos detallada, visite www.littelfuse.com/rm2000
Serie 777
Serie 77C
Serie 601
INFORMER
Herramienta de diagnóstico
remoto
Herramienta de diagnóstico portátil diseñada para utilizar con
relevadores de bomba monofásicos. El Informer utiliza un receptor
infrarrojo para acceder a la información enviada desde el relevador
que puede ser útil para resolver problemas en el sistema. Viene con
Kit Infrarrojo n.º 12 de 304,8 mm (12") de longitud.
Para ver la hoja de datos detallada, visite www.littelfuse.com/informer
111P 111-Insider-P
111P-ENCL 231-Insider-P
232-Insider 233P-1.5
233P-ENCL 233P-1.5-ENCL
234-P 235P
235P-ENCL
Kit Infrarrojo n.º 36
(de 914,4 mm (36")
de longitud)
Kit de fibra óptica + Informer
Para utilizar con el Informer. Se conecta directamente en la parte
frontal de la unidad para brindar diagnóstico remoto sin abrir el panel.
LSRX1 111-Insider-P 455
LSRX-C 231-Insider-P
INFORMER-MS
Herramienta de diagnóstico
remoto
Herramienta de diagnóstico portátil diseñada para utilizar con la Serie
Littelfuse 455. El Informer-MS utiliza un receptor infrarrojo para leer
información importante transmitida desde el 455, que puede ser útil
para resolver problemas en el sistema.
Para ver la hoja de datos detallada, visite www.littelfuse.com/informer-ms
Serie 455
OL-RESET
Módulo de restablecimiento
remoto
Permite que la línea 777 de productos de relevadores para bomba y
motores se restablezca manualmente sin necesidad de abrir el panel.
Conecta directamente el módulo al puerto de comunicaciones 777,
conecta un cable a cada uno de los dos pines correspondientes en
el OL-RESET y a un interruptor con pulsador normalmente abierto
(se vende por separado). Instale el interruptor con pulsador en una
ubicación conveniente.
Serie 777
777-MRSW
Kit de restablecimiento remoto
manual de 609,6 mm (24")
de longitud
Permite que la línea 777 de productos de relevadores para bomba
y motores se restablezca manualmente sin necesidad de abrir el
panel. Conecta directamente el adaptador de 9 pines al puerto de
comunicaciones 777 y permite instalar el interruptor con pulsador en
una ubicación conveniente.
Serie 777
M500
Megóhmetro electrónico
Probador de aislamiento portátil y automático potenciado por baterías. Esta unidad está diseñada específicamente
como una alternativa económica para los megóhmetros de aguja giratoria altamente costosos. El M500 mide los
valores de resistencia de aislamiento de motores, generadores, y transformadores hasta por 1000 MΩ a 500 V CA,
indicando la condición de aislamiento en un rango de zona. Su diseño compacto y la facilidad de uso hacen del
M500 una excelente herramienta de diagnóstico para talleres de bobinados, personal de mantenimiento eléctrico e
instaladores de bombas.
ACCESORIOS
14
Para ver la hoja de datos detallada, consulte la pág. 246
Para ver la hoja de datos detallada, consulte la pág. 248
Para ver la hoja de datos detallada, consulte la pág. 250
Para ver la hoja de datos detallada, consulte la pág. 252
www.littelfuse.com/relayaccessories 476 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Conocimientos aplicados | Respuestas entregadas Comunicación
MÓDULOS Y ADAPTADORES DE COMUNICACIÓN
ADAPTADORES DE COMUNICACIÓN
Producto Características Accesorio para
RS485-RS232
Convertidor con cable
y conector
Permite que los dispositivos RS485 se conecten a una computadora
mediante el puerto RS232 (serial). El convertidor brinda bloques
de terminal conveniente para generar señales y conexiones de
alimentación eléctrica de CC. Es posible que se deba instalar una
fuente eléctrica opcional para computadoras portátiles u otros
dispositivos con puertos seriales de potencia baja o para redes
muy extensas. Precableado para una fácil instalación en el módulo
RS485MS-2W.
RS485MS-2W
RS485-USB
Convertidor con cable
y conector/RS232:USB
Permite que los dispositivos RS485 se conecten a una computadora
mediante puerto USB. El convertidor brinda bloques de terminal
conveniente para generar señales y conexiones de alimentación
eléctrica de CC. Es posible que se deba instalar una fuente eléctrica
opcional para computadoras portátiles u otros dispositivos con
puertos seriales de potencia baja o para redes muy extensas.
Precableado para fácil instalación en el módulo RS485MS-2W.
RS485MS-2W
AC700-CUA
Adaptador de comunicación
Interfaz de red óptica y adaptador de comunicación para actualización
del firmware. Instalación en el campo. EL731
MÓDULOS DE COMUNICACIÓN
Producto Características Accesorio para
RS485MS-2W
Módulo de comunicación
Se requiere este módulo al utilizar el RM1000, RM2000 u otros
dispositivos compatibles con Modbus en productos de la serie 77X.
Para ver la hoja de datos detallada, visite www.littelfuse.com/rs485ms2w
Series: RM1000 77X
RM2000
CIO-DN-P
CIO-120-DN-P
Enlace de comunicación para
sistemas de monitoreo/PLC/
SCADA
Interfaces prácticas y económicas DeviceNet™ con capacidad de
proporcionar control y monitoreo discreto de iniciadores de motor,
controladores y otros dispositivos en una red DeviceNet™.
Para ver la hoja de datos detallada, visite www.littelfuse.com/ciodnp-cio120dnp
Serie 777
CIO-EN
Enlace de comunicación para
sistemas de monitoreo/PLC/
SCADA
El módulo CIO-EN (no POE) son interfaces Modbus-RTU y Modbus-TCP
prácticas y económicas con capacidad para proporcionar control y
monitoreo discreto de un relevador de sobrecarga en una red Modbus.
Para ver la hoja de datos detallada, visite www.littelfuse.com/cioen
Serie 777
CIO-MB
CIO-120-MB
Enlace de comunicación para
sistemas de monitoreo/PLC/
SCADA
Interfaces Modbus-RTU prácticas y económicas con capacidad
para proporcionar control y monitoreo discreto de un relevador de
sobrecarga en una red Modbus.
Para ver la hoja de datos detallada, visite www.littelfuse.com/ciomb-cio120mb
Serie 777
CIO-777-PR
Enlace de comunicación para
sistemas de monitoreo/PLC/
SCADA
Interfaz Profibus práctica y económica con capacidad de proporcionar
control y monitoreo discreto de iniciadores de motor, controladores y
otros dispositivos en una red Profibus.
Para ver la hoja de datos detallada, visite www.littelfuse.com/cio777pr
Serie 777 que terminan en P, -P o -P2
CIO-601CS-DN-P1
Dispositivo práctico y económico DeviceNet™ con capacidad de
proporcionar control y monitoreo discreto de iniciadores de motor,
controladores y otros dispositivos en una red DeviceNet™.
601-CS-D-P1
COM 4-20
Enlace de comunicación para
sistemas de monitoreo/PLC/
SCADA
El módulo enviará señales de 4 a 20 mA proporcionales a la energía
de salida. Puede utilizarse también para enviar la energía de entrada
configurando los niveles de eficiencia del monitor 777-AccuPower en
uno. Este módulo permite la comunicación a un PLC con una entrada
analógica y sin entrada Modbus.
Para ver la hoja de datos detallada, visite www.littelfuse.com/com420
777-AccuPower
ACCESORIOS
14
Para ver la hoja de datos detallada, consulte la pág. 254
Para ver la hoja de datos detallada, consulte la pág. 257
Para ver la hoja de datos detallada, consulte la pág. 260
Para ver la hoja de datos detallada, consulte la pág. 255
Para ver la hoja de datos detallada, consulte la pág. 259
Para ver la hoja de datos detallada, consulte la pág. 261
©2018 Controladores y Relevadores de Protección de Littelfuse 477 www.littelfuse.com/relayaccessories
Accesorios
Terminaciones y adaptadores Conocimientos aplicados | Respuestas entregadas
ADAPTADORES Y TERMINACIONES
Producto Características Accesorio para
1N5339B
Dispositivo de terminación
Terminación de guía axial para verificación de conexión a tierra de 5 W Se
incluye con las Series SE-105 y SE-107.
SE-105
SE-107
SE-TA6-SM
Conjunto de terminación con
perno de montaje
Terminación para verificación de conexión a tierra de 50 W compacto y
resistente para bombas sumergibles. El cable trenzado simplifica la instalación.
(Sustituto de 1N4553B)
SE-105
SE-107
SE-TA6
Conjunto de terminación
Terminación para verificación de conexión a tierra de 50 W con prácticos
orificios de montaje y terminales de tornillo.
SE-105
SE-107
SE-TA6A
(PGA-0T6A)
Conjunto de terminación
Terminación para verificación de conexión a tierra de 50 W de temperatura
compensada con prácticos orificios de montaje y terminales de tornillo.
SE-105
SE-107
SE-134C
SE-TA6A-WL
Conjunto de terminación
Terminación para verificación de conexión a tierra de 50 W de temperatura
compensada con prácticos orificios de montaje y terminales de tornillo.
SE-105
SE-107
SE-134C
SE-TA6ASF-WL
Conjunto de terminación
en formato pequeño con
conductores
Terminación para verificación de conexión a tierra de 12 W de temperatura
compensada, ideal para utilizar en bombas sumergibles y topes de los
extremos para acopladores de cables. Orificios de montaje y conductores.
SE-105
SE-107
SE-134C
SE-TA12A
Conjunto de terminación
Terminación para verificación de conexión a tierra de 50 W de temperatura
compensada con prácticos orificios de montaje y terminales de tornillo.
SE-135
SE-145
SE-TA12ASF-WL
Conjunto de terminación
en formato pequeño con
conductores
Terminación para verificación de conexión a tierra de 12 W de temperatura
compensada, ideal para utilizar en bombas sumergibles y topes de los
extremos para acopladores de cables. Orificios de montaje y conductores.
SE-135
SE-145
SE-TA12A-WL
Conjunto de terminación
Terminación para verificación de conexión a tierra de 50 W de temperatura
compensada con prácticos orificios de montaje y terminales de tornillo.
SE-135
SE-145
SE-TA12A
SE-TA12B
Conjuntos de terminación
Se utilizan en conjunto para permitir que la unidad SE-134C monitoree tableros
divisores y dos conexiones. SE-134C
PPI-600V
Aislador de ruta en paralelo
Rechazo de ruta a tierra en paralelo para monitores de verificación de conexión
a tierra. Elimina la formación de arcos entre dispositivos y previene la desviación
de corrientes de CC que fluyen en una conexión a tierra monitoreada.
SE-105 SE-107
SE-134C SE-135
RK-13
Módulo de interfaz de relevador
Contactos de indicación de verificación y fallas de conexión a tierra
independientes para el SE-105, y contactos de fallas en resistor y fallas de
conexión a tierra independientes para el SE-325. Se utilizan como medio de
salida a un PLC y para controlar luces piloto estándar. Completo con tableros
de circuitos con terminado general.
SE-105
SE-107
SE-325
SE-485-DIN
Convertidor industrial de RS-485
a RS-232
Convertidor en serie RS-485 a RS-233 para tipo de red industrial. Montaje en
riel DIN; requiere de conexión de 24 V CC.
MPS
FPS
SE-485-PP
Convertidor en serie con puerto
de conexión
Convierte una señal RS-485 en señal RS-232. Se utiliza para programar puntos
de ajuste y actualizar la memoria flash. Tasa de transferencia máxima de
115,2 kbit/s.
MPU-32 MPS
FPU-32 FPS
CA-945
Kit adaptador de conector en serie
Conecta un RJ45 a un conector en serie de 9 pines. Incluye un cable de 1,5 m y
un adaptador de conexión.
MPU-32
FPU-32
SE-ICUSB232
Convertidor de USB a RS-232 Conecta un cable en serie de 9 pines a un puerto USB.
SE-330 CA-945
SE-330AU SE-330HV
SE-485-PP SE-485-DIN
ADAPTADORES Y TERMINACIONES
ACCESORIOS
14
www.littelfuse.com/relayaccessories 478 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Conocimientos aplicados | Respuestas entregadas Control de nivel de líquidos
TERMINALES DE NIVEL DE LÍQUIDOS Y PORTATERMINALES
ELECTRODOS PARA CONTROL DE NIVEL DE LÍQUIDOS
Producto Características Accesorio para
LLP-24
Terminal de nivel de líquidos
Terminal roscada en acero inoxidable de 609,6 mm (24 in) de longitud.
Diseñada para utilizar con electrodos de control de nivel de líquidos
PHST-38QTN.
PHST-38QTN
PHST-38QTN
Portaterminales
P0700-409
Cubierta de protección
Diseñados para utilizarse con todos los controles de nivel de líquidos
conductivos. Compuestos de aisladores y piezas de metal fabricadas
en acero inoxidable serie 300. Estos portaterminales internamente
conductivos están diseñados para una presión de vapor máxima de
240 PSI; 200 °C (400 °F) máximo. Voltaje máximo desde el electrodo
hasta tierra. El PHST-38QTN tiene certificación UL 353.
Series: LLC1 LLC2 LLC4
LLC5 LLC6 LLC8
PC-XXX-LLC-CZ
PC-XXX-LLC-GM
460-15-100-LLS
8-32 NC-2 THD
Inches (Millimeters)
H
20,57
(0,81)
38,86
(1,53)
< 84,84
(3,34)
A = 3/8-18 PTF-SAE
Short Dryseal
H = Hexagonal
X = Full Thread
X
6,35
(0,25)
A
1/4-20 NC -2THD
< 12,95
(0,51)
Milímetros
(Pulgadas)
A = Sello corto de
3/8 PTF-SAE
H = Hexagonal
X = Inserción completa
ACCESORIOS
14
©2018 Controladores y Relevadores de Protección de Littelfuse 479
Accesorios
Conocimientos aplicados | Respuestas entregadas
www.littelfuse.com/relayct
Transformadores de corriente (CT)
GUÍA DE SELECCIÓN DE CT
PRODUCTO
CT DE FALLAS DE CONEXIÓN A
TIERRA
NIVEL DE DISPARO DE FALLAS DE
CONEXIÓN A TIERRA (o nivel de disparo) CT DE FASE
N.º DE
PÁGINA
SE-601 No requiere de CT 1-20 mA N/A –
PGR-3100 No requiere de CT Indicación solamente N/A –
PGR-3200 No requiere de CT Advertencias en 30 kΩ y 50 kΩ,
alarma en 10 kΩ N/A –
SE-701/SE-703
Serie CT200 10-198 A
N/A
480
Serie EFCT 50 mA-4,95 A 480
Serie SE-CS30 300 mA-29,7 A 480
SE-704 Serie SE-CS30 10 mA-5 A N/A 480
EL731 Serie EFCT 30-5000 mA CA y CC N/A 480
SE-105/SE-107 Serie CT200 0,5-4 A N/A 480
SE-134C/SE-135 Serie SE-CS10 0,5-12,5 A N/A 480
SE-330
Serie CT200 12-200 A
N/A
480
Serie EFCT 100 mA-5 A 480
Serie SE-CS30 600 mA-30 A 480
SE-325 Serie CT200 0,5-4 A N/A 480
MPU-32*
Serie CT200 10-200 A
N/A
480
Serie EFCT 50 mA-5 A 480
Serie SE-CS30 300 mA-30 A 480
MPS*
CT200 10-200 A
CT secundarios de 1 A y 5 A
480
Serie EFCT
(Primaria de 5 A) 50 mA-5 A 480
Serie SE-CS30
(Primaria de 30 A) 300 mA-30 A 480
MPU-32-X69X-PMA16
Los CT existentes pueden
utilizarse al igual que las
unidades MPU-32.
480
MPS-469X-PMA24
Los CT existentes pueden
utilizarse al igual que las
unidades MPS.
480
FPU-32*
Serie CT200 10-200 A
CT secundarios de 1 A y 5 A
480
Serie EFCT 50 mA-5 A 480
Serie SE-CS30 300 mA-30 A 480
FPS*
CT200 10-200 A
CT secundarios de 1 A y 5 A
480
Serie EFCT
(Primaria de 5 A) 50 mA-5 A 480
Serie SE-CS30
(Primaria de 30 A) 300 mA-30 A 480
PGR-8800‡ N/A N/A CT secundarios de 5 A
(opcionales) 480
Nota: Consulte la página 502 para obtener información adicional acerca de la sección de CT. Consulte la página 482 para ver el gráfico de dimensionamiento de CT.
*Se recomienda seleccionar CT de fase con una clasificación nominal primaria de 100-300 % de la corriente nominal para conservar la exactitud especificada.
‡Seleccione un CT con una clasificación nominal primaria aproximadamente igual a la corriente nominal del sistema.
PROTECCIÓN
CONTRA FALLAS DE
CONEXIÓN A TIERRA
MONITOREO DEL
CONDUCTOR DE
CONEXIÓN A TIERRA
CONEXIÓN
A TIERRA DE
RESISTENCIA
PROTECCIÓN DE
MOTORES Y BOMBAS
PROTECCIÓN DEL
ALIMENTADOR
PROTECCIÓN
CONTRA ARCO
ELÉCTRICO
ACCESORIOS
14
www.littelfuse.com/relayct 480 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Transformadores de corriente (CT) Conocimientos aplicados | Respuestas entregadas
TRANSFORMADORES DE CORRIENTE
TRANSFORMADORES DE CORRIENTE
Producto Características Diámetro interno Accesorio para
CT200 (PGC-2056)
Transformador de corriente
Detecta la corriente de fase o la corriente de
falla de conexión a tierra (primaria de 200 A)
56 mm
(2,20")
FPS FPU-32 MPS
MPU-32 PGR-8800 SE-105/107
SE-330 SE-325 SE-701
CT200L (PGC-2089)
Transformador de corriente
Detecta la corriente de fase o la corriente de
falla de conexión a tierra (primaria de 200 A)
89 mm
(3,50")
FPS FPU-32 MPS
MPU-32 PGR-8800 SE-105 SE107 SE-701
EFCT-26 (PGC-3026)
Transformador de corriente
para fallas de conexión a tierra
Transformador de corriente sensitiva utilizado
para detectar corriente de fallas de conexión a
tierra (primaria de 5 A)
26 mm
(1,02")
EL731 FPS FPU-32
MPS MPU-32 SE-330
SE-701
EFCT-1 (PGC-3082)
Transformador de corriente
para fallas de conexión a tierra
Transformador de corriente sensitiva utilizado
para detectar corriente de fallas de conexión a
tierra (primaria de 5 A)
82 mm
(3,23")
EL731 FPS FPU-32
MPS MPU-32 SE-330
SE-701
EFCT-2 (PGC-3140)
Transformador de corriente
para fallas de conexión a tierra
Transformador de corriente sensitiva utilizado
para detectar corriente de fallas de conexión a
tierra (primaria de 5 A)
140 mm
(5,50")
EL731 FPS FPU-32
MPS MPU-32 SE-701
EFCT-1FC (PGC-31FC)
Acondicionador de flujo
Se adapta en la ventana EFCT-1 para reducir
la saturación y prevenir operaciones no
deseadas debido a grandes sobrecorrientes
70 mm
(2,75") EFCT-1
SE-CS10-2.5 (PGC-4064)
Sensor de corriente
Detecta corrientes de falla de conexión a
tierra
64 mm
(2,50") SE-134C SE-135 SE-145
SE-CS10-4 (PGC-4108)
Sensor de corriente
Detecta corrientes de falla de conexión a
tierra
108 mm
(4,25") SE-134C SE-135 SE-145
SE-CS10-6 (PGC-4160)
Sensor de corriente
Detecta corrientes de falla de conexión a
tierra
160 mm
(6,31") SE-134C SE-135 SE-145
SE-CS10-8 (PGC-4210)
Sensor de corriente
Detecta corrientes de falla de conexión a
tierra
210 mm
(8,25") SE-134C SE-135 SE-145
SE-CS30-26 (PGC-5025)
Transformador de corriente para
fallas de conexión a tierra
Transformador de corriente para fallas de
conexión a tierra de nivel bajo; acondicionador
de flujo estándar (primaria de 30 A)
25 mm
(0,98")
FPS FPU-32 MPS MPU32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS30-70 (PGC-5060)
Transformador de corriente para
fallas de conexión a tierra
Transformador de corriente para fallas de
conexión a tierra de nivel bajo; acondicionador
de flujo estándar (primaria de 30 A)
60 mm
(2,36")
FPS FPU-32 MPS MPU32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS30-4 (PGC-5095)
Transformador de corriente para fallas
de conexión a tierra
Transformador de corriente para fallas de
conexión a tierra de nivel bajo; acondicionador
de flujo estándar (primaria de 30 A)
95 mm
(3,74")
FPS FPU-32 MPS MPU32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS30-5 (PGC-5130)
Transformador de corriente para fallas
de conexión a tierra
Transformador de corriente para fallas de
conexión a tierra de nivel bajo; acondicionador
de flujo estándar (primaria de 30 A)
130 mm
(5,12")
FPS FPU-32 MPS MPU32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS30-8 (PGC-5200)
Transformador de corriente para fallas
de conexión a tierra
Transformador de corriente para fallas de
conexión a tierra de nivel bajo; acondicionador
de flujo estándar (primaria de 30 A)
200 mm
(7,87")
FPS FPU-32 MPS MPU32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS40-6
Sensor de corriente
Detecta corrientes de falla de conexión a
tierra
160 mm
(6,31") SE-135 SE-145
NOTA: contacto de fábrica para productos de CT adicionales.
ACCESORIOS
14
©2018 Controladores y Relevadores de Protección de Littelfuse 481 www.littelfuse.com/relayct
Accesorios
Transformadores de corriente (CT) Conocimientos aplicados | Respuestas entregadas
TRANSFORMADORES DE MEDICIÓN E INSTRUMENTACIÓN
Planos dimensionales
2RL 56RL 76RL
TIPO DONA
2SFT 56SFT 76SFT RANURAS ABIERTAS
RANURAS ABIERTAS
RANURAS ABIERTAS
MONTAJE RANURADO CON TERMINALES EN LATÓN
Tipo dona Montaje en ranuras
Descripción
Littelfuse ofrece una amplia serie de transformadores de corriente
clasificados como instrumentos con aperturas de 25,4 mm a 76,2 mm
(1 a 3 in) de diámetro.
Clasificación de voltaje: 600V 600 V CA
Clasificación BIL: 10kV
Información para pedir
MODELO DE DONA VENTANA TASA DE CORRIENTE
CT-0050-D10 25,4 mm (1") 50:5
CT-0075-D10 25,4 mm (1") 75:5
CT-0100-D10 25,4 mm (1") 100:5
CT-0150-D10 25,4 mm (1") 150:5
CT-0200-D10 25,4 mm (1") 200:5
CT-0300-D10 25,4 mm (1") 300:5
CT-0200-D20 50,8 mm (2") 200:5
CT-0300-D20 50,8 mm (2") 300:5
CT-0400-D20 50,8 mm (2") 400:5
CT-0500-D20 50,8 mm (2") 500:5
MODELO TIPO
RANURADO VENTANA TASA DE CORRIENTE
CT-0050-F10 25,4 mm (1") 50:5
CT-0100-F10 25,4 mm (1") 100:5
CT-0150-F10 25,4 mm (1") 150:5
CT-0200-F10 25,4 mm (1") 200:5
CT-0300-F10 25,4 mm (1") 300:5
CT-1200-F15 38,1 mm (1,5") 1200:5
CT-0150-F20 50,8 mm (2") 150:5
CT-0200-F20 50,8 mm (2") 200:5
CT-0300-F20 50,8 mm (2") 300:5
CT-0400-F20 50,8 mm (2") 400:5
CT-0600-F20 50,8 mm (2") 600:5
CT-0400-F30 76,2 mm (3") 400:5
CT-0800-F30 76,2 mm (3") 800:5
CT - xxx - D10
Estilo
Serie
Tamaño de la ventana
Tasa de corriente
D = Tipo dona
F = Estilo ranurado
10 = 25,4 mm (1 in)
15 = 38,1 (1,5 in)
20 = 50,8 mm (2 in)
30 = 76,2 mm (3 in) xxx:5 radio de corriente
Sistema de numeración de piezas
ACCESORIOS
14
www.littelfuse.com/relayct 482 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Transformadores de corriente (CT) Conocimientos aplicados | Respuestas entregadas
TRANSFORMADORES DE MEDICIÓN E INSTRUMENTACIÓN
Producto Características Diámetro interno Accesorio para
Serie CT-XXXXDXX
Transformador tipo dona
Littelfuse ofrece una amplia serie de
transformadores de corriente clasificados
como instrumentos con aperturas de 25,4 mm
a 76,2 mm (1 a 3 in) de diámetro.
Para obtener la hoja de datos detallada e información
sobre pedidos, visite www.littelfuse.com/ctxxxxdxx
25,4 - 76,2 mm
(1 - 3")
Series:
777 DCSA ECS
ECSW LSR-0 LSR-XX
LSRU LSRX TCS
TCSA LCSC10T12
Serie CT-XXXXFXX
Transformador tipo ranurado
Littelfuse ofrece una amplia serie de
transformadores de corriente clasificados
como instrumentos con aperturas de 25,4 mm
a 76,2 mm (1 a 3 in) de diámetro.
Para obtener la hoja de datos detallada e información
sobre pedidos, visite www.littelfuse.com/ctxxxxfxx
25,4 - 76,2 mm
(1 - 3")
Series:
777 DCSA ECS
ECSW LSR-0 LSR-XX
LSRU LSRX TCS
TCSA LCSC10T12
TRANSFORMADORES DE MEDICIÓN E INSTRUMENTACIÓN
Instrucciones de instalación:
Al instalar los CT de secuencia cero, asegúrese de
considerar lo siguiente:
1. Solo la carga que lleva conductores pasa a través
del núcleo del CT. Esto significa que L1 + N para
monofásico y L1+ L2 + L3 para trifásico.
2. Los conductores de energía pasan a través del
núcleo del CT y, preferiblemente, son conectados
entre sí para mantener a los conductores
separados uniformemente.
3. Los conductores de energía pasan
perpendicularmente por el CT y, a efectos
prácticos, continúan en forma perpendicular a los
CT en ambos lados del CT 76,2 mm (3").
4. Los conductores de energía no deberían instalarse
de forma tal que les permita operar sobre los
bordes laterales del CT.
5. A efectos prácticos, instale los CT alejados
de dispositivos que generen ruido tales como
transformadores, convertidores de frecuencia, etc.
Gráfica de dimensionamiento de transformadores de corriente
Tamaño del
conductor
(AWG/kcmil)
Tamaño mínimo de la ventana de CT (diámetro interno en mm)
Número de conductores
1 3 4 6 8 12
12 4 8 9 11 13 15
10 6 10 11 14 16 19
8 7 12 14 17 20 24
6 9 15 18 22 25 31
4 11 19 22 28 32 39
3 13 22 25 31 36 44
2 14 25 28 35 40 49
1 16 28 32 39 45 55
1/0 18 31 36 44 51 62
2/0 20 35 40 49 57 69
3/0 23 39 45 55 64 78
4/0 25 44 51 62 72 88
250 28 48 55 67 78 95
350 33 56 65 80 92 113
500 39 67 78 95 110 135
750 48 82 95 117 135 165
1000 55 95 110 135 156 191
ACCESORIOS
14
Para ver la hoja de datos detallada e información para
pedir, consulte la página 481.
Para ver la hoja de datos detallada e información para
pedir, consulte la página 481.
©2018 Controladores y Relevadores de Protección de Littelfuse 483 www.littelfuse.com/relayaccessories
Accesorios
Carcasas y adaptadores de montaje Conocimientos aplicados | Respuestas entregadas
RELEVADOR PARA
REEMPLAZAR
MONTAJE
EN PANEL RELEVADOR NUEVO
AB BULLETIN 1406 PMA-14 MPS
FPL-GFRM PMA-6 SE-701/SE-704
GE S1 PMA-9 MPU-32/FPU-32
GE LODTRAK III PMA-10 MPU-32
GE MULTILIN 169, 269 o 369
PMA-13 MPS
PMA-16 MPU-32
PMA-16 FPU-32
GE MULTILIN 469 PMA-24 MPS
GE MULTILIN P4A PMA-15 MPU-32/FPU-32
GEC/MCGG PMA-3 SE-701/SE-704
GE Y WESTINGHOUSE FT-11 PMA-12 MPU-32
P&B GOLDS Contactar fábrica FPU-32
WESTINGHOUSE CO9 Y CO11 Contactar fábrica FPU-32
Placas de adaptador
SERIE PMA
Adaptadores de montaje en panel - Retroadaptadores
Descripción
Una variedad de placas para retroadaptadores de relevadores de
seguridad están disponibles para los productos que se indican a
continuación. Estas placas de adaptador simplifican el proceso
de actualizar relevadores electromecánicos o existentes con
funcionamiento inadecuado. Si tiene un producto específico para
reemplazar que no esté incluido en la lista, por favor comuníquese
con la fábrica. Los adaptadores están disponibles en unidades tipo
placa para montaje en panel o extraíble según el relevador para
reemplazar.
Actualización de la protección de motores, alimentadores y fallas de
conexión a tierra disponibles para relevadores electromecánicos o de
estado sólido que estén próximos a finalizar su vida útil.
Para una lista completa de placas de adaptadores de montaje en panel de Littelfuse, consulte la página siguiente.
Ejemplo de un adaptador de montaje en panel (PMA-3). El relevador
es para fines ilustrativos solamente y debe adquirirse como accesorio
separado de la placa de adaptador. Para obtener más información
sobre nuestra línea de productos de adaptadores de montaje en panel,
consulte la página siguiente.
Ejemplo en la imagen: PMA-3
CARACTERÍSTICAS BENEFICIOS
Montaje Se adapta a los orificios de montaje y aperturas de
panel existentes
Múltiples tamaños de
adaptadores
Adaptadores tipo placa o extraíble disponibles y
compatibles con diversos relevadores descontinuados
Características y beneficios
www.littelfuse.com/relayaccessories
ACCESORIOS
14
www.littelfuse.com/relayaccessories 484 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Conocimientos aplicados | Respuestas entregadas Carcasas y adaptadores de montaje
Nota: Los relevadores no se incluyen con los adaptadores de montaje en panel serie PMA.
ADAPTADORES DE MONTAJE EN PANEL
Producto Características Accesorio para
PMA-2
Placa de adaptador Se utiliza para reemplazar la placa AB Bulletin 1406. MPU-32
PMA-3
Placa de adaptador
Se utiliza para reemplazar relevadores de fallas en conexión a tierra GEC/MCGG.
Requiere PMA-55 o PMA-60. SE-704 SE-701
PMA-4
Placa de adaptador Se utiliza para reemplazar el Multilin 139/239. MPU-32
PMA-6
Placa de adaptador
Se utiliza para reemplazar relevadores de fallas en conexión a tierra FPL-GFRM.
Requiere PMA-55 o PMA-60. SE-701
PMA-7
Placa de adaptador Se utiliza para reemplazar el GE Lodtrak II. MPU-32
PMA-8
Placa de adaptador Se utiliza para reemplazar un Atkinson Omser II con un Monitor Serie SE-130. SE-134C SE-135
PMA-9
Placa de adaptador
Se utiliza para reemplazar relevadores en la Unidad GE S1.
Requiere PMA-55 o PMA-60. MPU-32 FPU-32
PMA-10
Placa de adaptador Se utiliza para reemplazar el GE Lodtrak III. MPU-32
PMA-12
Placa de adaptador Se utiliza para reemplazar relevadores eGE y Westinghouse FT-11. MPU-32
PMA-13
Placa de adaptador Se utiliza para reemplazar el GE Multilin 169, 269 o 369. MPS
PMA-14
Placa de adaptador Se utiliza en interruptores irregulares y para reemplazar el AB Bulletin 1406. MPS
PMA-15
Placa de adaptador Se utiliza en interruptores irregulares y para reemplazar el GE Multilin P4A. MPU-32 FPU-32
PMA-16
Placa de adaptador
PMA-16-RTDB
Abrazadera de montaje
La placa de montaje PMA-16 se utiliza para reemplazar los relevadores GE Multilin
169, 269 y 369. La serie PMA-16-RTDB son abrazaderas de montaje para el Módulo de
entrada de temperatura MPS-RTD opcional.
MPU-32 FPU-32
PMA-17
Placa de adaptador Se utiliza para reemplazar Sprecher & Schuh Cet 4. MPU-32
PMA-18
Placa de adaptador Se utiliza para reemplazar Sprecher & Schuh Cet 3. MPU-32
PMA-21
Placa de adaptador Se utiliza para reemplazar un ABB RACIF. FPU-32
PMA-23
Placa de adaptador
Placa de montaje personalizado compatible con FPU-32 para reemplazar relevadores 3
Westinghouse C0. FPU-32
PMA-24
Placa de adaptador Se utiliza para reemplazar el GE Multilin 469. MPS
PMA-55
Placa de adaptador Se utiliza para montaje en panel del SE-601 y SE-701. SE-601
PGR-4300
SE-701
SE-704
PMA-60
Placa de adaptador
Se utiliza para montar el relevador en panel; con clasificación IP 53 y NEMA 3,
resistente a vibraciones.
SE-601
PGR-4300
SE-701
SE-704
MPU-32-SMK
Kit de montaje en superficie Se utiliza para montaje en superficie del MPU-32 o FPU-32. MPU-32 FPU-32
ADAPTADORES DE MONTAJE EN PANEL
ACCESORIOS
14
©2018 Controladores y Relevadores de Protección de Littelfuse 485 www.littelfuse.com/relayaccessories
Accesorios
Carcasas y adaptadores de montaje Conocimientos aplicados | Respuestas entregadas
ADAPTADORES DE MONTAJE EN SUPERFICIE Y EN RIEL DIN
ADAPTADORES DE MONTAJE Y RIEL DIN
Producto Características Accesorio para
C103PM (Al)
Carril DIN
Aluminio de 35 mm estándar de la industria o riel DIN
en acero. Riel en aluminio tipo C103PM disponible en
914,4 mm (36 in) de longitud.
Puede utilizarse con todas las unidades
compatibles con riel DIN.
AC700-SMK
Adaptador de montaje
Adaptador de montaje en superficie o riel DIN para
instalación en panel posterior. EL731
D0050
Sujetador de adaptador para
riel DIN
Sujetador de plástico que permite la instalación en riel DIN
de relevador de arco eléctrico PGR-8800 and AF0500.
AF0500
PGR-8800
P1023-20
Adaptador de montaje en
riel DIN
Permite instalar cualquier módulo de 50,8 x 50,8 mm (2 x
2 in) o de 50,8 x 76,2 mm (2 x 3 in) en un riel tipo DIN de
35 mm. Viene completo con hardware de montaje (un tornillo
n.º 10 - 24 x 1.00 y un tornillo n.º 10 - 24 x 1.25) para módulos
de 19 mm (0,75 in) y de 25,4 mm (1 in) de espesor.
Consulte la hoja de datos individual para
determinar su compatibilidad.
P0500-178
Adaptador de montaje en
superficie
El P0500-178 se puede instalar en superficie utilizando dos
sujetadores de montaje rápido.
Temporizadores Serie ASXX/DSXX
P0500-179
Adaptador de montaje
en riel DIN
El P0500-179 es compatible con riel DIN. Temporizadores Serie ASXX/DSXX
Milímetros
(Pulgadas)
Milímetros
(Pulgadas)
9,65
(0,38)
5,97 DIA
(0,235)
Sujetador de
montaje rápido
(2) [Diámetro
del orificio de
perforación
4,75 (0,187)]
61,2
(2,41)
76,2
(3,00)
16,26
(0,640)
17,52
(0,69)
35 mm (1,38") DIN 3
32 mm (1,26")
DIN 3
20,7
(0,82")
4,70
(0,185)
ACCESORIOS
14
www.littelfuse.com/relayaccessories 486 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Conocimientos aplicados | Respuestas entregadas Carcasas y adaptadores de montaje
ABRAZADERAS Y SUJETADORES
ABRAZADERAS Y SUJETADORES
Producto Características Accesorio para
BZ1
Kit de montaje de panel
frontal
Proporciona un método fácil de montaje en panel de
temporizadores de conector de 8 u 11 pines, luces
intermitentes y otros controles. Puede ser instalado en
paneles de hasta 3,2 mm (0,125 in) de espesor. Incluye dos
abrazaderas y dos tornillos.
Series:
ARP FS500 LLC4 LLC5 LLC6
PLM PLMU PLR PLS PRLM
TDB TDBH TDBL TDI TDIH
TDIL TDM TDMB TDMH TDML
TDR TDS TDSH TDSL TRB
TRDU TRM TRS TRU
PANEL OPENING
1.9 +/-.02
(48.3 +/-.5)
2.6 +/-.02
(66.0 +/-.5)
Milímetros (in) Representa el tamaño de apertura del
panel necesario para instalar el BZ1.
P1023-6
P1023-7
Abrazaderas de montaje
0.56
(14.3)
1.25
(31.8)
2.1
(53.3)
0.47
(11.9)
1.5
(38.1)
0.19
(4.8)
d
Milímetros (in)
Ofrece un método práctico para la instalación de módulos.
La orientación a 90° de las ranuras de montaje hacen que
el proceso de instalación/desinstalación de los módulos
sea fácil y rápido. Fabricación en acero con acabado de
superficie en cadmio.
NÚMERO
DE PARTE
TAMAÑO DEL
ORIFICIO DE MONTAJE
MÉTODO DE MONTAJE
P1023-6 4,8 mm (0,19 in) Tornillos n.º 8 (M4 x 0.7)
P1023-7 6,35 mm (0,25 in) Mini-Pot
Se utiliza en varios temporizadores de 2"
x 2". Consulte la hoja de datos de la serie
para determinar la compatibilidad de este
accesorio.
PSCRB8
Abrazaderas de presión
Diseñado para utilizarse con conectores P1011-6. Se
instala firmemente en controles de conexión de 8 pines en
cualquier posición y brinda protección contra la vibración.
Se venden por pares.
P1011-6
PSC8
PSC11
Sujetadores de presión
Fijan de forma segura controles de conector en cualquier
posición. Además brindan protección contra la vibración.
Seleccione el PSC8 para utilizar con conectores NDS-8, o
el PSC11 para utilizar con conectores NDS-11 Se venden
por pares.
Conector NDS-8 Conector NDS-11
P1023-2
Abrazadera tipo P
Abrazadera tipo P extraíble para instalación de
temporizadores Serie MSM y luces intermitentes Series
FS100 y FS400.
Temporizadores de la serie: MSM
Luces intermitentes de la serie: FS100
FS400
PANEL DE
APERTURA
48,3 +/- 0,5
(1,9 +/- 0,02)
66 +/- 0,5
(2,6 +/- 0,02)
14,3
(0,56) 4,8
(0,19)
11,9
(0,47)
31,8
(1,25)
53,3
(2,1)
38,1
(1,5)
ACCESORIOS
14
©2018 Controladores y Relevadores de Protección de Littelfuse 487 www.littelfuse.com/relayaccessories
Accesorios
Carcasas y adaptadores de montaje Conocimientos aplicados | Respuestas entregadas
GABINETES Y CUBIERTAS HERMÉTICAS
GABINETES
Producto Características Accesorio para
NGRM-ENC
Panel de control para monitor
de NGR
Panel de control en acero pintado tipo NEMA 4, completo con el SE-325
o SE-330, y un PT 600/480:120 V con fusible para control de energía del
relevador. Ideal para montaje en interiores y exteriores, con certificación
CSA. Cuando el monitor de NGR se instala en el panel posterior, se incluyen
indicadores NEMA 4 de 22 mm y botón de restablecimiento. Comuníquese
con la fábrica para obtener más información.
www.littelfuse.com/ngrm-enc
SE-325
SE-330
NEMA-3R-L A
Carcasa
Tablero eléctrico de metal NEMA-3R con lentes para visualizar las luces de
estado monofásicas PumpSaver® H 152,4 mm x A 152,4 mm x P 101,6 mm
(H 6" x A 6" x P 4")
Monofásico PumpSaver®
RM-1000-ENCL
Carcasa
Gabinete en acero para proteger el RM1000 contra el agua o intentos de
robo. Protege contra bajo voltaje (UV) y está sellado para evitar que el
agua entre en contacto con las conexiones RM1000. El gabinete también
incluye una almohadilla de candado integrada (no incluye el candado).
H 162,6 mm x A 160 mm x P 43,2 mm (H 6,4" x A 6,3" x P 1,7")
RM1000
CUBIERTAS RESISTENTES AL AGUA
Producto Características Accesorio para
MPU-16A-Y92A-96N
Cubierta resistente al agua Cubierta resistente al agua para aplicaciones en exteriores. MPU-32
FPU-32
SE-IP65CVR-G
Cubierta resistente al agua Cubierta resistente al agua. Resistente a la vibración. Protección IP65.
SE-134C SE-135
SE-330 SE-330AU
SE-330HV SE-400
SE-IP65CVR-M
Cubierta resistente al agua Cubierta resistente al agua. Resistente a la vibración. Protección IP65. MPS
FPS
SE-MRE-600
Kit de gabinete
resistente a la humedad
Protege los terminales de conexión de la nieve y la lluvia en
aplicaciones en exteriores.
ER-600VC
ER-1000HV
ACCESORIOS
14
Para ver la hoja de datos detallada e información para pedir, consulte la pág. 67
www.littelfuse.com/relayaccessories 488 ©2018 Controladores y Relevadores de Protección de Littelfuse
Accesorios
Conocimientos aplicados | Respuestas entregadas Carcasas y adaptadores de montaje
CONECTORES
CONECTORES
Producto Características Accesorio para
OT08PC
Conector octal de 8 pines
Conector octal de montaje en superficie o riel DIN de 35 mm de
8 pines. Clasificación nominal de 10 A a 600 V CA y tiene terminales
con abrazadera de presión.
Tamaños de cable 3,2 a 0,33 mm²
(AWG 12 a 22.) Consulte la hoja
de datos individual para ver la
compatibilidad.
NDS-8
Conector octal de 8 pines
Terminales de tornillo con
abrazaderas para cable
cautivo
Conector octal de montaje en superficie o riel DIN de 35 mm de
8 pines. Clasificación nominal 10 A a 300 V CA Montaje de superficie
con dos tornillos o anillos de presión n.º 6 (M 3.5 x 0.6) en riel DIN de
35 mm. Un mecanismo de resorte permite una fácil extracción. Utilice
abrazaderas de presión PSC8.
Hasta para dos cables n.º 14 AWG
(2,45 mm²)
Series:
ARP FS500 LLC4 LLC5
PRLM TDB TDBH TDBL
TDI TDIH TDIL TDM
TDMB TDMH TDML TDR
TDS TDSH TDSL TRDU
TRM TRS TRU
P1011-6
Conector octal de 8 pines
Conector de montaje en superficie de 8 pines con terminales de
tornillo de fijación Clasificación nominal 10 A a 600 V CA. Esta
combinación cumple las especificaciones UL al utilizarse con
temporizadores de la Serie TDB, TDM, y TDS. Utiliza abrazaderas de
presión PSCRB8.
Serie:
ARP FS500 LLC4 LLC5
PRLM TDB TDM TDMB
TDR TDS TRB TRDU
TRM TRS TRU
OT11PC
Conector magnal de 11 pines Los conectores magnal son para unidades de conexión directa
Unidades de conexión directa de
11 pines
Series:
ARP LLC6 TDB TDBH
TDBL TDMB TDS TDSH
TDSL TRB TRDU TRM
TRS TRU
SD12-PC
Conector rectangular de
12 pines
Conector rectangular para superficie de 12 pines. ACBC-120
NDS-11
Conector magnal de 11 pines
Terminales de tornillo con
abrazaderas para cable
cautivo
Conector de montaje en superficie o riel DIN de 35 mm de 11 pines.
Clasificación nominal 10 A a 300 V CA. Montaje de superficie con
dos tornillos o anillos de presión n.º 6 (M 3.5 x 0.6) en riel DIN de
35 mm. Un mecanismo de resorte permite una fácil extracción. Utilice
abrazaderas de presión PSC11.
Tamaños de cable
3,2 a 0,33 mm² (AWG 12 a 22)
Series:
ARP LLC6 TDB TDBH
TDBL TDMB TDS TDSH
TDSL TRB TRDU TRM
TRS TRU
ACCESORIOS
14
©2018 Controladores y Relevadores de Protección de Littelfuse 489 www.littelfuse.com/relayscontrols
Descripción general
Conocimientos aplicados | Respuestas entregadas
Para obtener más información...
y para descargar nuestra Descripción general
sobre relevadores de seguridad, visite
www.littelfuse.com/TechnicalCenter
DESCRIPCIÓN GENERAL
Glosario de términos.........................................................................................490
Introducción.......................................................................................................493
I. Introducción a los relevadores de seguridad .......................................493
II. Aplicaciones de los relevadores ..........................................................494
III. Aplicaciones de los CT ........................................................................502
IV. Conversión de conexión a tierra de resistencia ..................................503
Números de dispositivo IEEE/ANSI ..................................................................506
Sufijos típicos....................................................................................................506
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
Descripción general
www.littelfuse.com/relayscontrols 490 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas Glosario de términos
Acondicionador de flujo–Anillo de material magnéticamente
permeable en una ventana de transformador de corriente de falla de
conexión a tierra; utilizado para reducir la saturación local.
Acoplador de alta tensión–Accesorio utilizado para aislar el voltaje del
sistema de un relevador de seguridad.
Alimentador–Todos los conductores de circuito entre el equipo
de servicio u otra fuente de alimentación eléctrica, y la carga o el
dispositivo de sobrecorriente en el circuito.
Análisis de la energía incidente–Se utiliza para predecir la energía
incidente de un arco eléctrico para un conjunto de condiciones
especificadas.
Cable de arrastre–Un cable de energía utilizado para suministrar
energía a un equipo móvil. En general, contienen tres conductores de
fase, dos conductores a tierra y un cable auxiliar (conocido también
como conductor de verificación a tierra).
Clasificación de arco eléctrico–Valor atribuido a los materiales que
describe su rendimiento ante la exposición a una descarga por arco
eléctrico. La clasificación de arco eléctrico se expresa en cal/cm2 y se
deriva a partir del índice determinado del valor de rendimiento térmico
de arco eléctrico (ATPV) o la energía del límite de ruptura abierto (EBT)
(en caso tal que el sistema de materiales presente una respuesta al
límite de ruptura abierto por debajo del valor ATPV). La clasificación de
arco eléctrico se define en ATPV o EBT, el que sea de menor valor.ˆ
Clasificación nominal primaria (para los CT)–La clasificación
nominal de corriente de la sección principal de un transformador de
corriente. Por ejemplo, el primer número en la relación 500:5 es la
clasificación nominal primaria. 500 A de corriente principal que fluye
a través del CT producirán 5 A de corriente saliente en los terminales
secundarios.
Compensación de la saturación del CT–Característica en la que
un relevador de seguridad puede reconocer que un CT está saturado y
compensa la condición para mantenerlo en funcionamiento.
Condición de trabajo eléctricamente segura–Un conductor
eléctrico o circuito que ha sido desconectado de los elementos
energizados, ha sido bloqueado y rotulado de conformidad con las
normas establecidas, probado para garantizar la ausencia de voltaje y
conectado a tierra según sea necesario.
Conductor de verificación de conexión a tierra–Un conductor
aislado en un cable de arrastre para asistir con la continuidad del
monitoreo del conductor a tierra. Diseñado generalmente como
conductor de menor tamaño, es el primero en cortar la conexión al
desconectar los acopladores de cable.
Conexión a tierra de resistencia alta–Mediante un resistor de
conexión neutro a tierra para limitar la corriente a un nivel bajo. En
general, la conexión a tierra de resistencia alta limita la corriente de falla
de conexión a tierra a 25 A o menos. (Consulte también Conexión a
tierra de resistencia baja).
Conexión a tierra de resistencia baja–Un sistema de conexión a
tierra de resistencia que permite el flujo de corrientes altas durante una
falla en la conexión a tierra. En general, una corriente de 100 A o más se
considera como conexión a tierra de resistencia baja. (Consulte también
Conexión a tierra de resistencia alta).
Contacto (contacto normalmente abierto)–Un contacto de
relevador que se abre cuando no se energiza el relevador.
Contacto (contacto normalmente cerrado)–Un contacto de
relevador que se cierra cuando no se energiza el relevador.
Contacto de relevador de alarma–Salida de un relevador que actúa
como interruptor y generalmente está conectado a una alarma visual o
audible.
Contacto de relevador de disparo–Una salida de un relevador
que actúa como interruptor y generalmente se conecta a una bobina
de disparo derivada o liberación por bajo voltaje en un interruptor de
circuito.
Corriente de carga–Sistema donde la corriente de carga corresponde
a la corriente que fluye en la conexión a tierra cuando una fase de un
sistema conectado a tierra presenta fallas en la conexión. Si bien no
están físicamente conectados a tierra, los conductores eléctricos y los
bobinados de todos los componentes están conectadas a tierra vía
capacitores. Por lo tanto, una corriente pequeña fluirá a tierra desde
cada fase. Esta corriente no se genera en una ubicación en particular; en
vez de ello, se distribuye a través del sistema conforme se distribuye la
capacitancia a tierra en todo el sistema.
Corriente de falla de conexión a tierra–Corriente que regresa al
neutro de alimentación mediante una ruta de falla de conexión a tierra y
retorno a tierra.
Corriente de fase–Corriente presente en un conductor de fase.
Corriente de filtración–Corriente de falla de conexión a tierra de nivel
bajo, generalmente calculada en miliamperios (mA).
Corriente que presenta fallas–Una corriente que fluye cuando un
conductor de fase presenta fallas en otra fase o en la conexión a tierra.
Desenergizado–Libre de cualquier conexión eléctrica a una fuente
de diferencia de potencial eléctrico y de carga eléctrica; sin potencial
eléctrico diferente al dado en la conexión a tierra.
DFT–Consulte Transformador discreto de Fourier.
Disparo perjudicial–Un funcionamiento falso de un relevador de
seguridad.
Energía incidente–Cantidad de energía impresa sobre una superficie,
a cierta distancia de la fuente, generada durante un evento de arco
eléctrico. Una de las unidades utilizadas para medir la energía incidente
son las calorías por centímetro cuadrado (cal/cm2).
Estado de disparo–El estado del contacto de salida durante el disparo
de un relevador.
Factor de potencia eléctrica (cosφ)–La relación entre la potencia
activa [kW] y la potencia aparente [kVA].
Falla de conexión a tierra–Un contacto no intencional entre un
conductor fase y un marco de equipo o conexión a tierra. Las palabras
“conexión a tierra” y “a tierra” pueden emplearse intercambiablemente.
Filtración a tierra–Consulte Corriente de filtración.
Filtro armónico digital–Uso de técnicas de procesamiento de señales
digitales tales como Transformadores discretos de Fourier para eliminar
la medición de componentes armónicos. En relación con la detección de
fallas en la conexión a tierra, permite un ajuste inferior al nivel de ruido
de fondo.
Filtro armónico–Dispositivo o método para eliminar o ignorar
componentes de frecuencia no fundamental de una señal.
Frecuencia armónica–Los componentes de frecuencia armónica
(voltaje y corriente) son múltiples variaciones de la frecuencia
fundamental y, en un sistema de alimentación, podrían considerarse
como ruido. Los componentes de frecuencia armónica a menudo están
presentes con el uso de controladores de velocidad ajustable.
Frecuencia fundamental–En un sistema de alimentación de
corriente alterna, corresponde a la frecuencia del voltaje generado. En
Norteamérica dicha frecuencia es generalmente de 60 Hz (60 ciclos por
segundo).
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
©2018 Controladores y Relevadores de Protección de Littelfuse 491 www.littelfuse.com/relayscontrols
Descripción general
Glosario de términos Conocimientos aplicados | Respuestas entregadas
Gestión de riesgos por arco eléctrico–Estudio que investiga la
exposición potencial de los trabajadores al arco eléctrico, realizado a los
fines de prevenir accidentes con el personal y para determinar prácticas
de trabajo seguras, límite de arco eléctrico y los tipos de equipo de
protección personal (EPP) necesarios.
I
2t (t I cuadrado)–Capacidad térmica o capacidad térmica utilizada. En
relación con la protección de motores, la capacidad térmica se utiliza
para medir y describir el calor en un motor en términos de corriente (I).
Este método es más exacto que la detección de temperatura debido a
la disposición sensor-temperatura y al retardo de tiempo inherente en la
medición de la temperatura.
Límite de arco eléctrico–Cuando existe un riesgo de arco eléctrico, el
límite es un trayecto definido a una distancia de fuentes potenciales de
arco eléctrico dentro del que una persona podría sufrir quemaduras de
segundo grado si llegase a ocurrir un arco eléctrico.
Mecanismo de control resistente a arcos eléctricos–Equipo
diseñado para soportar los efectos de una falla interna por arco eléctrico
y que aleja del operario la energía liberada internamente.
Memoria no volátil–Datos registrados al aislar la alimentación
eléctrica.
Modo de control automático de protección (también conocido
como bajo voltaje o UV)–Un relevador de salida que se energiza durante
el funcionamiento normal (no activado). Si el relevador de seguridad pierde
alimentación eléctrica, el sistema se activará o generará una alarma.
(Consulte también Modo sin control de protección automático).
Modo de funcionamiento del Relevador –Método de
funcionamiento utilizado para interruptores de bajo voltaje y de disparo
derivado. (Consulte también Modo con control de protección
automático, Modo sin control de protección automático).
Modo sin control de protección automático (conocido también
como Activación derivada o SH)–Un relevador de salida energizado
y contactos que cambian de estado cuando ocurre un disparo. Si el
dispositivo de protección pierde la alimentación eléctrica, el sistema
continuará operando pero sin protección. (Consulte también Unidad sin
control automático de protección).
Módulo de diferencial–Accesorio para el relevador de seguridad para
motores MPU-32 y el sistema de protección para motores MPS para
brindar mayor protección en fases diferenciales.
Módulo de referencia a tierra–Una red de resistores que limita la
corriente de falla de conexión a tierra y brinda una referencia del sistema
para un relevador de falla de conexión a tierra de CC.
Monitor de continuidad de conexión a tierra–Relevador de
seguridad que monitorea continuamente un puente de conexión a tierra
y se activa cuando el puente se abre o genera un corto.
Monitoreo del aislamiento–Monitoreo de la resistencia de una fase
conectada a tierra para detectar el límite de aislamiento en un sistema.
Monitoreo en línea o fuera de línea–Monitoreo de parámetros del
sistema tales como integridad del aislamiento cuando el sistema está
energizado o desenergizado, respectivamente.
Motor asíncrono–Un motor en el que la velocidad del rotor no es igual
a la frecuencia del sistema conectado a este.
Nivel de alarma–Configuración en un relevador de seguridad en la que
opera un LED o contacto de salida.
Nivel de disparo–Configuración en un relevador de seguridad en el
que opera un LED o contacto de salida.
Números de dispositivos IEEE–Los dispositivos en equipo de
conmutación se definen por números, según las funciones que
desempeñen. Estos números se basan en un sistema que ha sido
adoptado como estándar para mecanismos de control automático por el
IEEE. Este sistema de numeración se utiliza en conjunto con diagramas,
en la definición de instrucciones y en especificaciones.
Peligro de arco eléctrico–Condición peligrosa asociada con la
liberación potencial de energía ocasionada por un arco eléctrico.
Potencia activa–Medida en kW. En aplicaciones de generadores
diésel, corresponde a la potencia producida por el motor.
Potencia aparente–Suma vectorial de la potencia activa y reactiva.
Potencia inversa–Una potencia activa [kW] transferida a un generador
que, debido a tal transferencia, funciona como un motor eléctrico,
potenciando la fuente energética. Ya que esto podría dañar la fuente
energética (p. ej., un motor de combustión interna), los relevadores
de potencia inversa se utilizan en aplicaciones donde los generadores
operan en paralelo entre sí o con los servicios eléctricos. Estos
relevadores detectan la cantidad y dirección de la potencia eléctrica,
y en caso de detectar una potencia inversa excesiva, desconecta el
interruptor del generador.
Potencia reactiva–Medida en kVAR. La potencia utilizada para
magnetización de alternadores asíncronos, motores y transformadores,
bobinas, etc. La cantidad de potencia reactiva no afecta el torque de la
fuente energética (p. ej., motor diésel). Por lo tanto, la potencia reactiva
no tiene efecto alguno en el motor. Sin embargo, es muy importante
para el alternador, ya que la carga total en el alternador es la suma
vectorial de las cargas activa y reactiva.
Protección contra fallas de conexión a tierra de alta
sensibilidad–Protección diseñada para detectar con exactitud
corrientes de fallas de conexión a tierra de nivel bajo.
Protección contra fallas de conexión a tierra–El uso de un
relevador de falla de conexión a tierra o un sistema de indicación para
poder interrumpir la alimentación o alarmar al personal en caso de que
ocurra una falla en la conexión a tierra.
Protección de diferencial de fase–Protección diseñada para detectar
fallas de bobina a bobina de nivel bajo y de bobina a tierra en un motor
CA.
Protección de motores–Tecnología diseñada para garantizar que un
motor opere dentro de su capacidad térmica nominal para maximizar su
vida útil.
Protección de sobrecorriente de tiempo inverso–Método mediante
el cual el tiempo de disparo de un dispositivo de protección, tal como un
relevador de sobrecorriente o de falla en la conexión a tierra, disminuye
la magnitud en la expansión de la falla.
Protección del alimentador–Dispositivos de sobrecorriente o
sobrevoltaje instalados en un circuito alimentador para interrumpir la
alimentación en caso de fallas.
Protección LSIG–Acrónimo para Sobrevoltaje a largo y corto plazo
instantáneo, y Protección contra fallas en la conexión a tierra; un
término a menudo utilizado para describir la protección requerida en un
alimentador de distribución de energía, o un relevador de seguridad con
estas funciones.
Puente de conexión a tierra–Circuito que incluye un conductor para
verificar la conexión a tierra, un dispositivo de terminación de conexión a
tierra y un conductor de conexión a tierra.
Registro de datos–Recopilación y almacenamiento de información en
un formato que puede ser analizado para identificar tendencias, resolver
problemas y crear informes.
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
Descripción general
www.littelfuse.com/relayscontrols 492 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Relevador (1)–Interruptor eléctrico que abre y cierra un contacto (o
contactos) bajo el control de otro circuito. En general, es un electroimán.
Relevador (2)–Dispositivo que recibe voltajes de entrada, los
compara con puntos de ajuste y proporciona voltajes de salida según la
comparación realizada.
Relevador de falla de conexión a tierra– Relevador de seguridad
diseñado para detectar fallas de fase a tierra en un sistema y para
activarse o generar alarmas cuando la condición supere su límite de
captación por encima del retardo de tiempo definido.
Resistencia de aislamiento–Medición de la capacidad de un aislador,
tal como un revestimiento, para prevenir el flujo de corriente al aplicar
un voltaje; en general, se mide en megaohmios (MΩ). Los cambios en la
resistencia de aislamiento pueden ser monitoreados para predecir fallas.
Resistor de conexión de neutro a tierra (NGR)–Resistor limitador
de corriente que conecta el sistema de energía de neutro a tierra.
Retardo de tiempo–Un ajuste en un relevador de seguridad que
determina el tiempo entre la detección de fallas y el funcionamiento
del relevador.
Riesgo de choques eléctricos–Una condición peligrosa asociada
con la liberación potencial de energía ocasionada por el contacto o
acercamiento a los conductores eléctricos energizados o piezas del
circuito.
Riesgo de CT abierto–Un circuito CT secundario abierto que podría
generar un voltaje peligrosamente alto toda vez que exista una corriente
primaria.
Riesgo eléctrico–Condición peligrosa tal como una falla en el equipo o
un contacto que podría llevar a choques eléctricos, quemaduras por arco
eléctrico, quemaduras térmicas o explosiones.
RMS real–Cálculo de “Raíz cuadrática media” utilizado para derivar una
corriente promedio o valor de voltaje en una forma de onda.
RTD (Detector de Temperatura de la Resistencia)–Dispositivo que
experimenta un cambio lineal en la resistencia con una variación en la
temperatura. Se utiliza para medir la temperatura. Los RTD comunes son
de 100 Ω de platino, 100 Ω de níquel, 120 Ω de níquel y 10 Ω de cobre.
Salida analógica–Señal discreta, continuamente variable de 0-1 mA,
4-20 mA, o 0-5 V CC proveniente de un relevador de seguridad utilizado
para transferir información a un dispositivo o controlador.
Saturación de CT–Una condición que ocurre cuando un CT no logra
mantener una corriente secundaria proporcional a una corriente primaria
relativamente mayor.
Saturación local de CT–Condición donde el flujo magnético no se
distribuye uniformemente a través del CT. La corriente secundaria
resultante podría inducirse una vez que no existan fallas de conexión a
tierra; podría llevar a una activación falsa de un relevador de seguridad.
Esto podría ocurrir si los conductores no están centrados en una
ventana de CT.
Seguridad eléctrica–Reconocimiento de peligros asociados con el uso
de energía eléctrica e implementación de medidas de precaución para
evitar riesgos de accidentes con el personal o la muerte.
Sistema con conexión directa a tierra–Sistema eléctrico en el que
el punto neutro de un transformador de energía conectado en estrella
está conectado directamente a tierra. (Consulte también Sistema de
resistencia conectado a tierra, Sistemas no conectados a tierra.)
Sistema de resistencia conectado a tierra–Sistema eléctrico en
el que el neutro de un generador o transformador se conecta a tierra
mediante un resistor limitador de corriente. (Consulte también Sistema
con conexión directa a tierra, Sistema no conectados a tierra).
Sistema no conectado a tierra–Un sistema eléctrico en el que
ningún punto del sistema está conectado a tierra de forma intencional,
como por ejemplo, un transformador de energía de conexión en
triángulo.
Sistemas de fallas en conexión a tierra por impulsos–Modulación
de la corriente de falla de conexión a tierra en un sistema de resistencia
conectado a tierra utilizando un contactor para cortar la sección de los
elementos de NGR (o para abrir uno de los dos NGR conectados en
paralelo). Esta técnica se utiliza para identificar fallas de conexión a tierra
trazando la corriente de falla de conexión a tierra por impulsos hasta la
fuente de la falla.
Terminación de conexión a tierra–Dispositivo instalado en el
extremo de carga de un puente de conexión a tierra.
Terminado general–Revestimiento de silicona utilizado para proteger
tableros de circuitos de contaminantes, corrosión, moho.
Tiempo de ajuste de la protección–Cantidad de tiempo que un
relevador de seguridad puede mantener su funcionamiento durante una
pérdida de alimentación.
Traje contra arco eléctrico–Vestimenta completa de protección
contra arco eléctrico y sistemas de equipo que cubren todo el cuerpo, a
excepción de las manos y los pies.
Transformador de corriente (CT)–Un transformador que produce
una corriente en su circuito secundario en una proporción conocida para
asignar corriente a su circuito principal.
Transformador de corriente de balance de potencia–Consulte
Transformador de corriente de fallas de conexión a tierra.
Transformador de corriente de falla de conexión a tierra–Consulte
Transformador de corriente de fallas de conexión a tierra.
Transformador de corriente de fallas de conexión a tierra–Un
transformador de corriente utilizado para medir la corriente de fallas de
conexión a tierra de nivel bajo.
Transformador de corriente de fase–Un transformador de corriente
instalado para que la corriente en un conductor de fase fluya a su
bobinado principal. En relación con la protección de motores, protección
de alimentadores, y medición en un sistema trifásico, generalmente se
utilizan tres transformadores de corriente para medir las corrientes de
fase.
Transformador de corriente de secuencia cero–Consulte
Transformador de corriente de fallas de conexión a tierra.
Transformador discreto de Fourier–Algoritmo matemático utilizado
para extraer una frecuencia única, tal como la frecuencia fundamental, a
partir de una señal.
Verificación de CT–Una verificación constante de la continuidad del CT
para verificar la conexión.
Voltaje de fase–Voltaje medido entre un conductor de fase y tierra, u
otra fase.
Glosario de términos
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
©2018 Controladores y Relevadores de Protección de Littelfuse 493 www.littelfuse.com/relayscontrols
Descripción general
Conocimientos aplicados | Respuestas entregadas Introducción
I. INTRODUCCIÓN A LOS RELEVADORES DE
SEGURIDAD
¿Qué es un relevador de seguridad?
g Entradas y configuraciones
g Procesos
g Salidas
¿Cómo resuelven problemas eléctricos los relevadores
de seguridad?
g Etapa 1 – Etapas iniciales de una falla
g Etapa 2 – Durante una falla
g Etapa 3 – Después de una falla
II. APLICACIONES DE LOS RELEVADORES
Protección de conexión a tierra
g Definición de fallas de conexión a tierra
g Sistemas de CC
g Sistemas de CA no conectados a tierra
g Sistemas con conexión directa a tierra
g Sistemas de resistencia conectados a tierra
g Sistema de corriente de carga capacitiva
g Monitores de resistores
g Monitores de continuidad en conexión a tierra
Protección de motores
g Descripción general
g Problemas comunes en motores y soluciones
g Protección de motores y NEC®
Protección contra arco eléctrico
g Descripción general
g Normas de seguridad sobre arcos eléctricos
g Mitigación de arcos eléctricos
g Relevadores de arco eléctrico
g Criterios de selección
III. APLICACIONES DE LOS CT
g Transformadores de corriente
g Longitud de la guía
g Instalación de CT
IV. CONVERSIÓN DE CONEXIÓN A TIERRA
DE RESISTENCIA
I. INTRODUCCIÓN A LOS RELEVADORES
DE SEGURIDAD
¿Qué es un relevador de seguridad?
Un relevador de seguridad es un dispositivo inteligente que recibe
entradas, las compara con puntos de ajuste y proporciona salidas.
Las entradas puede incluir corrientes, voltajes, resistencias o
temperatura. Las salidas pueden incluir información visual en
forma de luces indicadores o representaciones alfanuméricas,
comunicaciones, advertencias de control, alarmas, y encendidos y
apagados. A continuación se muestra un diagrama.
CORRIENTE
VOLTAJE
AISLAMIENTO
TEMPERATURA
INDICACIÓN
VISUAL
ALARMA DE
ADVERTENCIA
COMUNICACIONES
QUITAR
ALIMENTACIÓN
ELÉCTRICA
RELEVADOR DE
PROTECCIÓN NIVELES DE
CAPTACIÓN
TIEMPO
ENTRADAS
SALIDAS
CONFIGURACIONES
FIGURA 1
Los Relevadores de protección pueden ser electromecánicos
o electrónicos (basados en microprocesador). Los relevadores
electromecánicos constan de piezas mecánicas que requieren
de calibración frecuente para permanecer dentro de las
tolerancias definidas. Los relevadores electrónicos o basados
en microprocesador brindan salidas rápidas, fiables, exactas
y sistemáticas. Utilizar un relevador electrónico o basado en
microprocesador en vez de un relevador electromecánico tiene
diversas ventajas, que incluyen mayor exactitud, funciones
adicionales, mantenimiento reducido, ahorro de espacio para
instalación y menores costos durante el ciclo de vida.
Entradas
Un relevador requiere de información del sistema para tomar
decisiones. Estas entradas pueden recopilarse de diversas maneras.
En algunos casos, los cables en el campo pueden estar conectados
directamente al relevador. En otras aplicaciones, se requiere de
dispositivos adicionales para convertir los parámetros medidos
a un formato que pueda ser procesado por el relevador. Tales
dispositivos adicionales pueden ser transformadores de corriente,
transformadores de potencial eléctrico, acopladores de alta tensión,
RTD u otros dispositivos.
Configuraciones
Muchos relevadores de seguridad tienen configuraciones ajustables.
El usuario selecciona las configuraciones (niveles de captación) para
permitir que el relevador tome una decisión. El relevador compara las
entradas con estas configuraciones y responde conforme a ello.
Procesos
Una vez que las entradas están conectadas y se definió la
configuración, el relevador compara estos valores y toma una
decisión. Según la necesidad, hay diversos tipos de relevador para
múltiples funciones.
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
Descripción general
www.littelfuse.com/relayscontrols 494 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas Protección de conexión a tierra
Salidas
Un relevador puede tener diversas formas para comunicar que
ha tomado una decisión. En general, el relevador accionará un
interruptor (contacto de relevador) para indicar que una entrada
ha superado una configuración, o el relevador puede generar
notificaciones mediante información visual tal como un medidor o
LED. Una ventaja de muchos relevadores electrónicos o basados en
microprocesador es la capacidad para establecer comunicación con
una red o un PLC.
Como ejemplo, un termostato puede ser monitoreado mediante el
diagrama en la Figura 1. La entrada monitoreada es la temperatura
y el dispositivo de entrada es el sensor de temperatura. El usuario
define la configuración de temperatura deseada (nivel de captación).
El relevador mide la temperatura ambiente actual y la compara con
la configuración. Las salidas pueden utilizarse para brindar controles
(apagar o encender un calentador o aire acondicionado) e indicación
visual en la pantalla del termostato.
¿Cómo resuelven problemas eléctricos
los relés de seguridad?
Al igual que un termostato resuelve el problema de automatizar el
control del calentador o aire acondicionado en una propiedad, los
relevadores de seguridad pueden resolver problemas eléctricos.
El propósito del relevador de seguridad es detectar un problema,
preferiblemente durante su etapa inicial, y eliminar o reducir de
forma significativa los daños al personal o el equipo.
Las etapas a continuación ilustran cómo se desarrolla un problema
eléctrico:
Etapa 1: cuando los conductores con buen nivel de aislamiento
son expuestos a iniciadores de falla tales como humedad, polvo,
productos químicos, sobrecargas permanentes, vibración o deterioro
normal, el aislamiento se desgasta progresivamente. Dichos
pequeños cambios no se notarán de inmediato hasta que los daños
sean lo suficientemente severos como para causar una falla eléctrica.
Los relevadores pueden detectar que hay un problema en desarrollo
identificando pequeñas variaciones de corriente, voltaje, resistencia
o temperatura. Debido a la pequeña magnitud del cambio, solo un
dispositivo sofisticado como un relevadores de seguridad de alta
sensibilidad o un monitor podría detectar tales condiciones e indicar
que hay un problema en desarrollo, antes de que ocurran daños.
Etapa 2: a medida que el problema empeora, será necesario
implementar más cambios, como por ejemplo en el límite de
aislamiento, el nivel de sobrecalentamiento o de bajo voltaje. Debido
a que el cambio de normal a anormal es considerable, es posible
utilizar dispositivos tradicionales para interrumpir la alimentación.
Los relevadores de seguridad también pueden utilizarse para
brindar protección adicional detectando las causas de las fallas
(sobrecalentamiento, bajo voltaje, etc.) que no son posibles con
fusibles o interruptores automáticos.
Etapa 3: en esta etapa, el problema ha ocurrido y ya ha generado
daños. Diversos tipos de relevadores de seguridad y monitores
pueden reducir o eliminar daños debido a que detectan problemas
en dispositivos tradicionales de forma anticipada.
A manera de ejemplo, si en una instalación se restablecen los
interruptores automáticos constantemente, se reemplazan los
fusibles, o se repara el equipo y no es posible identificar el problema,
es posible que se deba a sobrevoltajes. Si este fuera el caso, el
usuario puede instalar un relevador de seguridad que incluya una
función de bajo voltaje. El relevador mide la corriente (entrada)
y permite al usuario programar límites (configuraciones). Las
configuraciones generalmente son más sensibles que los fusibles o
los interruptores automáticos. Una vez que se excedan estos límites,
el relevador operará un interruptor interno (contactos de relevador).
El usuario tiene la opción de utilizar el interruptor para activar una luz
(indicación de alarma) o aislar la alimentación (disparo) antes de que
ocurran mayores problemas. El usuario puede utilizar la indicación de
alarma para ayudar a identificar el equipo que presenta fallas antes
de que el fusible tradicional o el interruptor automático filtre la falla.
II. Aplicaciones de los relevadores
Protección de conexión a tierra
El propósito principal de los sistemas eléctricos de conexión a
tierra es brindar protección contra fallas eléctricas. Sin embargo,
esto no era una práctica común hasta la década de 1970. Para ese
entonces, la mayoría de los sistemas comerciales e industriales
no se conectaban a tierra. Si bien los sistemas no conectados a
tierra no causan daños significativos durante la primera falla de
conexión a tierra, las diversas desventajas con las fallas de conexión
llevaron a un cambio importante en la filosofía sobre conexiones a
tierra. Existen otras ventajas de un sistema conectado a tierra, una
de estas es la reducción de los peligros de choques eléctricos y
protección contra relámpagos.
Las fallas eléctricas pueden dividirse en dos categorías: fallas entre
fases y fallas de conexión a tierra. Los estudios han demostrado que
el 98 % de las fallas eléctricas corresponden a fallas de conexión
a tierra (Fuente: Woodham, Jack, P.E. “The Basics of Grounding
Systems” (Aspectos fundamentales sobre los sistemas de conexión
a tierra), 1 de mayo de 2003 ). Si bien los
fusibles pueden proteger contra fallas entre fases, es necesario
implementar medidas de protección adicionales, tales como
relevadores de seguridad, para proteger los sistemas contra fallas de
conexión a tierra.
Definición de fallas de conexión a tierra
Una falla de conexión a tierra es un contacto inadvertido entre un
conductor energizado y la tierra, o el marco del equipo. La ruta de
retorno de la corriente de falla es a través del sistema de conexión a
tierra y cualquier equipo o personal que sea parte de dicho sistema.
Las fallas de conexión a tierra a menudo son el resultado de
rupturas en el aislamiento. Es importante resaltar que en ambientes
húmedos, fríos o polvorientos se requieren mejores prácticas en
cuanto a diseño y mantenimiento. Debido a que el agua contaminada
es conductiva, expone a degradación del aislamiento y aumenta la
probabilidad de generar peligros.
En la Tabla 1 se muestran los principales iniciadores de fallas
eléctricas.
PRINCIPALES INICIADORES DE FALLAS % DE TODAS LAS
FALLAS
Exposición a la humedad 22,5 %
Cortocircuitos por herramientas, roedores, etc. 18 %
Exposición al polvo 14,5 %
Otros daños mecánicos 12,1 %
Exposición a productos químicos 9 %
Deterioro normal a través de los años 7 %
TABLA 1
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
©2018 Controladores y Relevadores de Protección de Littelfuse 495 www.littelfuse.com/relayscontrols
Descripción general
Protección de conexión a tierra Conocimientos aplicados | Respuestas entregadas
RECEPTÁCULO
BLANCO
120 V
15 A
l FALLA
NEGRO
VERDE
TOSTADORA
FIGURA 2
Como ejemplo, en el circuito de una tostadora que se indica arriba,
el cable negro o directo está en corto con una cubierta metálica de
la tostadora. Cuando el circuito se cierra, toda la corriente, o parte de
ésta, es canalizada a través del marco de la tostadora y luego pasa
a través del cable de conexión a tierra de color verde. Al fluir una
corriente suficiente (generalmente de 6 x 15 A = 90 A), el interruptor
automático se abrirá. Podría instalarse un relevador de seguridad
para detectar corrientes tan bajas como de 10 mA, que abrirían el
interruptor automático a un nivel significativamente menor, mucho
más rápido que el interruptor de circuito tradicional.
Aunque el ejemplo anterior muestra un circuito monofásico con
conexión directa a tierra, el principio es igual en circuitos trifásicos,
tal como se abordará más adelante. Los relevadores y monitores
están diseñados específicamente para identificar los principales
iniciadores descritos en la Tabla 1 detectando cambios de nivel bajo
en la corriente, el voltaje, la resistencia o la temperatura.
Sistemas de CC
Los sistemas de corriente continua (CC) tienen estaciones positivas
y negativas. Si alguna de las estaciones se conecta a tierra de forma
intencional, entonces dicha estación se denominará como sistema
conectado a tierra. Si ninguna de las estaciones está conectada a
tierra, entonces se denominará como sistema de CC no conectado
a tierra. Una falla de conexión a tierra en un sistema de CC puede
ocasionar daños tanto en la fuente de energía como en el campo.
Si el sistema no está conectado a tierra, entonces es posible utilizar
un relevador de falla de conexión a tierra instalando un módulo de
referencia a tierra entre las dos estaciones para establecer un punto
neutro (refiérase a la Figura 3). El relevador de falla de conexión a
tierra utiliza este punto neutro como referencia para detectar fallas
de conexión a tierra de nivel bajo.
MÓDULO DE REFERENCIA A TIERRA
L1
L2
FIGURA 3
Sistemas de CA no conectados a tierra
Los sistemas de CA no conectados a tierra, tal como lo indica la
Figura 4, se utilizaban donde la continuidad de la alimentación era
un factor crítico. Por ejemplo, en plantas químicas o refinerías que
incorporan procesos que no pueden ser interrumpidos, o de lo
contrario se incurriría en grandes pérdidas materiales y económicas,
es probable que cuenten con sistemas no conectados a tierra.
Sin embargo, la experiencia ha demostrado que estos sistemas
son problemáticos y están siendo reemplazados por sistemas
conectados a tierra con resistencias. Dos problemas críticos de los
sistemas no conectados a tierra son los sobrevoltajes transitorios
eléctricos y la dificultad para identificar fallas de conexión a tierra.
FASE C
CAPACITANCIA
DE SISTEMA
DISTRIBUIDA
FASE A CARGA
FASE B
FIGURA 4
g Un sistema no conectado a tierra no tiene un solo punto en el
sistema que esté conectado a tierra de forma intencional (diferente
de la conexión normal que siempre está presente para conectar las
piezas metálicas que no transfieren corriente a tierra). La conexión
a tierra se realiza solo a través de la capacitancia del sistema a tierra
(tal como se observa en la Figura 4).
g La continuidad del funcionamiento ocurre debido a que el sistema
puede operar con una falla defectuosa a tierra.
g Una falla por arco eléctrico o intermitencia puede producir
sobrevoltajes altos transitorios eléctricos a tierra. Estos voltajes
se imprimen en los conductores de fase en todo el sistema hasta
que ocurra una ruptura en el aislamiento en el punto más débil.
Dicha ruptura puede ocurrir en cualquier momento en un sistema
eléctrico, causando una falla de fase a tierra y de tierra a fase.
g Aunque una falla de conexión a tierra puede ser detectada o
generar una alarma en el sistema, es difícil determinar su ubicación.
Existen dos métodos utilizados para detectar fallas de conexión
a tierra en sistemas no conectados a tierra. El primero consiste
en monitorear los voltajes entre las fases y tierra. A medida que
se desarrolla una falla, la fase defectuosa colapsará el potencial
de conexión a tierra, que activa las luces indicadoras. Las luces
indicadoras en las fases no defectuosas son más luminosas.
Un segundo método para detectar una falla de conexión a tierra es
calcular la resistencia de aislamiento. Debido a que el aislamiento
se deteriora, un relevador que monitorea constantemente la
resistencia de aislamiento puede alertar en niveles diferentes para
mantenimiento preventivo. Se puede utilizar también un medidor o
un indicador visual.
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
Descripción general
www.littelfuse.com/relayscontrols 496 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas Protección de conexión a tierra
Sistemas con conexion directa a tierra
Como consecuencia de los problemas de los sistemas no
conectados a tierra, hubo un cambio en la filosofía y los diseños se
han actualizado a sistemas conectados a tierra. En la mayoría de
los casos, el tipo de sistema de conexión a tierra elegido era con
conexión directa a tierra. Un sistema con conexión directa a tierra es
un sistema de conductores donde al menos un conductor o punto
está conectado a tierra de forma intencional (usualmente el punto
neutro de los bobinados del transformador o generador). El problema
con la conexión directa es que la corriente de falla de conexión a
tierra puede ser excesiva, generando peligros de arco eléctrico,
daños severos en el equipo y posibles heridas al personal. Un
sistema con conexión directa a tierra no logra seguir operando con
una falla en la conexión a tierra.
NEUTRO
FASE C
FASE A
FASE B
CONEXIÓN A TIERRA
CARGA
FIGURA 5
g En un sistema con conexión directa a tierra, el punto en estrella (o
neutro) de la fuente de energía está conectado sólidamente a tierra
y brinda un sistema muy estable que mantiene un voltaje de fase a
tierra fijo.
g La corriente de falla de conexión a tierra de nivel alto es fácil
de detectar con fusibles, interruptores automáticos, o relés
de seguridad, permitiendo un disparo selectivo (disparo por
alimentador defectuoso y no en el alimentador principal).
g Cuando ocurre una falla de conexión a tierra, es posible que se
generen daños por fallas de punto alto debido a que la energía
disponible en la falla de conexión a tierra solo está limitada por la
impedancia del sistema (la cual, generalmente, es muy baja).
g Debido a la corriente de falla de conexión a tierra excesiva y a
los riesgos de arco eléctrico, el alimentador defectuoso debe ser
extraído de la unidad. Esto impide el funcionamiento continuo
durante una falla de conexión a tierra.
La Figura 6 ilustra un ejemplo de los peligros asociados con los
sistemas con conexión directa a tierra. En este ejemplo, ocurre
una falla de conexión a tierra y la protección de sobrecorriente se
establece en 600 A.
FALLA POR
ARCO ELÉCTRICO
MARCO DE EQUIPO O
COBRE SIN REVESTIMIENTO
600 A / 3 P
CARGA
FIGURA 6
Asumamos que esta falla de conexión a tierra no es una falla forzada,
si no una falla de arco eléctrico debido a una ruptura del aislamiento
o a una reducción de la distancia entre la línea y la tierra.
g Debido a la resistencia del arco eléctrico, la corriente de falla puede
ser tan baja como el 38 % del nivel de la falla forzada. Esto podría
estar en el rango de una carga normal o una leve sobrecarga.
g La corriente de falla puede ser tan baja que el dispositivo de
detección de sobrecorriente (interruptor automático de 600 A) no
detectaría una falla, o podría identificarla pero no se activaría por un
largo período de tiempo.
g La energía suministrada por la fuente está concentrada en el arco
y podría ocasionar daños severos en el equipo rápidamente. Esta
liberación de energía podría generar un incendio que a su vez
ocasionaría daños en las instalaciones y representaría un grave
peligro para el personal.
Aparte de convertir este sistema con conexión directa a tierra en una
conexión a tierra de resistencia, la mejor forma de prevenir daños es
detectar filtraciones a tierra de nivel bajo antes de que se conviertan
en fallas de conexión a tierra. Para lograrlo, el relevador de seguridad
debe tener la capacidad de detectar filtraciones de conexión a tierra
de nivel bajo sin generar activaciones falsas.
En instalaciones modernas, los equipos a menudo generan ruidos o
armónicos que pueden interferir con la capacidad de funcionamiento
adecuado de un relevador de seguridad. Por ejemplo, el ruido o
los armónicos pueden tener mayor intensidad de sonido que las
configuraciones del relevador de fallas de conexión a tierra, que
genera que el relevador opere en falso cuando no hay fallas en el
sistema. El relevador de seguridad debe tener la capacidad de filtrar
ruidos o armónicos para proporcionar protección fiable.
Sistemas de resistencia conectados a tierra
La conexión a tierra de resistencia resuelve el problema
comúnmente asociado con los sistemas no conectados a tierra y
los sistemas con conexión directa a tierra. Su nombre deriva de la
incorporación de un resistor entre el sistema de neutro a tierra (tal
como se muestra en la Figura 7). Las especificaciones del resistor se
terminan por el usuario para lograr una corriente de falla de conexión
a tierra deseada, la cual debe ser mayor a la corriente de carga
capacitiva del sistema (cuya explicación se trata más adelante).
NEUTRO
CONEXIÓN A TIERRA
FASE C
FASE A
FASE B
CARGA
FIGURA 7
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
©2018 Controladores y Relevadores de Protección de Littelfuse 497 www.littelfuse.com/relayscontrols
Descripción general
Protección de conexión a tierra Conocimientos aplicados | Respuestas entregadas
g Los sobrevoltajes transitorios eléctricos puede eliminarse
corrigiendo el dimensionamiento del resistor neutro a tierra
(NGR) para proporcionar una ruta de descarga adecuada para la
capacitancia del sistema.
g La continuidad del funcionamiento con una falla de conexión a
tierra generalmente es permisible cuando la corriente de falla de
conexión a tierra sea de ≤ 10 A.
g El NGR limita la corriente de falla de conexión a tierra disponible.
Esto elimina o minimiza los daños por punto de falla (riesgos de
arco eléctrico) y controla el voltaje de falla de conexión a tierra.
g Se puede utilizar la corriente de impulsos para identificar fallas
de conexión a tierra cuando la corriente de fallas de conexión a
tierra sea de ≤ 10 A. La corriente de impulsos se crea utilizando
un contactor de corte para cortar media sección de la resistencia,
causando una multiplicación de la corriente de fallas en conexión a
tierra (usualmente un ciclo por segundo).Un medidor de secuencia
cero portátil se utiliza para detectar la fluctuación de la corriente de
fallas en conexión a tierra y para detectar la falla de conexión.
g La única desventaja de la conexión a tierra de resistencia es que
si el resistor falla, el sistema quedaría sin conexión a tierra. Para
proteger contra esto, se recomienda el monitoreo del resistor.
Un relevador de seguridad para sistemas conectados a tierra de
resistencia se utiliza para detectar fallas de conexión a tierra y para
monitorear la conexión de neutro a tierra. Puede utilizarse para
generar alarmas o para disparar el alimentador en funcionamiento
al detectar una falla de conexión a tierra. El relevador puede
proporcionar un circuito de impulsos que puede utilizarse para
identificar fallas de conexión a tierra. El relevador además puede
generar alarmas o dispararse si la ruta de neutro a tierra falla.
Para sistemas de 5 kV, o menos, se puede utilizar la conexión a
tierra por resistencia alta. La conexión a tierra por resistencia alta
generalmente limita la corriente del resistor a 10 A o menos. Con
esto, la falla de conexión a tierra puede permanecer en el sistema, ya
que está clasificado para cambio de voltaje.
En sistemas superiores a 5 kV, los resistores de neutro a tierra
generalmente están clasificados para 25 A o más, y la corriente de
falla de conexión a tierra se aísla cuando transcurren 10 s.
Sistema de corriente de carga capacitiva
Si bien no están físicamente conectados a tierra, los conductores
eléctricos y los bobinados de todos los componentes están
conectadas a tierra vía capacitores. Por lo tanto, una corriente
pequeña fluirá a tierra desde cada fase. Esta corriente no se genera
en una ubicación en particular; en vez de ello, se distribuye a través
del sistema conforme se distribuye la capacitancia a tierra en todo
el sistema. A los fines del análisis, es conveniente considerar la
capacitancia distribuida como capacitancia localizada, tal como se
muestra en las Figuras 5, 6, 7, y 8.
lC
xC
IA + IB + IC = 0 xC xC
lA
lB
A
CARGA
FIGURA 8
Incluso si la capacitancia distribuida no está balanceada, el
amperímetro leerá cero debido a que toda la corriente que fluye a
través de la ventana de CT debe regresar por medio de la ventana
CT.
Sistema donde la corriente de carga corresponde a la corriente
que fluye en la conexión a tierra cuando una fase de un sistema
conectado a tierra presenta fallas en la conexión (consulte la
Figura 9). Esto puede calcularse conforme se indica a continuación
toda vez que se tengan en cuenta las siguientes recomendaciones:
g Si la falla ocurre en la alimentación lateral del CT, la suma
de las corrientes en la ventana CT no puede ser cero.
g El amperímetro A leerá la suma de las corrientes capacitivas en las
fases que no presentan fallas. Este valor corresponde a la corriente
de carga de todo el equipo en la carga lateral del CT.
lC
xC
IA + IB + IC = 0 xC xC
lA
lB
A
x
CARGA
FIGURA 9
Un diagrama de línea única de un sistema conectado a tierra por
resistencia y tres alimentadores con una falla en el alimentador 3
conforme se muestra en la Figura 10.
g Un CT (A1 y A2) en alimentadores que no presentan fallas
detectará la corriente de carga de dicho alimentador.
g Un CT (A3) en un alimentador que presenta fallas detectará la suma
de la corriente del resistor (IR) y las corrientes de carga (I1
+I2
) de los
alimentadores que no presentan fallas.
A1
A2
A3
1
2
3
CARGA
CARGA
CARGA
l
1
l
2
l
R
FIGURA 10
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
Descripción general
www.littelfuse.com/relayscontrols 498 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Es posible lograr la coordinación selectiva en un sistema conectado
a tierra de resistencia si la configuración de captación de cada
relevador de falla de conexión a tierra es superior a la corriente
de carga del alimentador bajo protección. Si la configuración de
captación de un relevador de falla de conexión a tierra es inferior a la
corriente de carga del alimentador bajo protección, dicho relevador
se activará cuando ocurra una falla de conexión a tierra en cualquier
otro lugar del sistema. Esto se denomina disparo simpático. El
disparo simpático puede evitarse seleccionando una configuración
de captación del relevador superior a la corriente de carga a partir
del alimentador principal. Si el tamaño relativo de los alimentadores
puede variar, o si se reconoce la ventaja de utilizar un valor
operacional para todos los relevadores de falla de conexión a tierra
en un sistema, entonces es conveniente elegir una configuración de
captación para todos los relevadores de falla de conexión a tierra que
sea superior a la corriente de carga del sistema.
A fin de eliminar sobrevoltajes transitorios eléctricos asociados con
un sistema no conectado a tierra, es necesario utilizar un resistor de
conexión a tierra con una corriente de pico circulante equivalente o
superior a la corriente de carga del sistema.
¿Cuál es la corriente de resistor de conexión de neutro a tierra (NGR)
mínima aceptable? Seleccione una configuración de captación para
los relevadores de falla de conexión a tierra que exceda la corriente
de carga del alimentador principal y multiplique el valor operativo por
una tasa de disparo aceptable. Utilice el valor mayor o la corriente de
carga del sistema y selecciona la próxima corriente de pico circulante
estándar más amplia disponible.
Monitores de resistores
Tal como se trató en la sección de sistemas conectados a tierra
por resistencia, una falla en la ruta de neutro a tierra llevará a una
situación peligrosa. Algunos ejemplos de causales de fallas son
cables robados, conexiones flojas, corrosión y elementos del resistor
dañados. El monitor de resistores supervisa constantemente la ruta
desde el neutro del sistema a tierra para detectar problemas. Cuando
hay un problema, el monitor genera una alarma.
Monitores de continuidad en conexión a tierra
Los monitores de verificación de conexión a tierra se utilizan para
detectar problemas en conductores de conexión a tierra para equipo.
El cable que alimenta el equipo móvil generalmente incluye un cable
adicional, o cable auxiliar, enrutado con los conductores de fase. Un
monitor utiliza este cable auxiliar para enviar señales a un dispositivo
de terminación en el equipo, donde tales señales son transferidas
al conductor del cable a tierra hasta el monitor. El monitor supervisa
constantemente esta terminal para identificar circuitos abiertos o en
corto, indicando que ha ocurrido un problema. El monitor proporciona
una alarma para esta condición.
Como ejemplo, las cargas portátiles están conectadas a tierra
mediante conductores múltiples o individuales en un cable de
arrastre. Una falla de conexión a tierra en una carga portátil hará que
la corriente de falla fluya a través de los conductores de conexión a
tierra y en todas las demás rutas de regreso a tierra. Un voltaje de
toque peligroso podría desarrollarse cuando el conductor de conexión
a tierra se abre y se genera una falla de conexión a tierra, asumiendo
que no existe una corriente suficiente para disparar un relevador de
falla de conexión a tierra. Si el equipo portátil tiene llantas de goma o
no está bien conectado a tierra, entonces la persona que lo toque en
condiciones de falla formará parte de la ruta de regreso a tierra.
Protección de motores
Descripción general
Los motores son una inversión considerable y a menudo ejecutan
procesos críticos. Los relevadores de seguridad para motores se
utilizan para proteger los bobinados contra daños debido a fallas
eléctricas o sobrecargas térmicas. Una protección de motores
adecuada no solo previene daños en los motores, sino que también
garantiza una eficiencia óptima del proceso e interrupciones
mínimas. El retorno a la inversión por protección se logra al aumentar
la vida útil del motor, previniendo el rebobinado del motor y
reduciendo los tiempos de inactividad.
Problemas comunes en los motores
Sobrecarga y sobretemperatura
La ruptura del aislamiento es una razón común para las fallas en un
motor. Los bobinados en el motor están aislados con materiales
orgánicos incluida resina epoxi y papel. La degradación del
aislamiento ocurre cuando la temperatura de los bobinados supera
su valor nominal. La Asociación Nacional de Fabricantes Eléctricos
(NEMA) establece que el tiempo de falla de un aislamiento orgánico
se reduce a la mitad por cada 8 a 10 °C sobre el valor nominal de
aislamiento del motor. Este concepto se ilustra en la Figura 11.
Solución: un modelo térmico I2
t proporciona protección contra
sobrecarga térmica de los bobinados de un motor durante todas
las fases de funcionamiento. Al integrar el valor al cuadrado de
la corriente vs. el tiempo, un modelo término puede predecir la
temperatura del motor y reaccionar mucho más rápido que los
dispositivos de temperatura integrados. Un modelo térmico toma en
consideración el factor de servicio del motor, la corriente de carga
completa y la clase. Un modelo térmico dinámico ajusta el tiempo de
disparo según la capacidad térmica del motor que se haya utilizado.
La Figura 12 ilustra el ajuste en el tiempo de disparo para niveles
de corriente diferentes en diversos niveles de capacidad térmica
utilizada (I2
t).
Un modelo térmico dinámico brinda una protección adecuada de
un motor y permite operaciones para aprovechar el máximo un
motor sin sacrificar su vida útil. Si el motor está caliente (% alto
de capacidad térmica usada) se activará más rápido durante una
sobrecarga comparado con un estado frío (0 % de capacidad térmica
usada). En caso de que un motor se detenga, cuando el torque del
motor disponible es inferior al torque requerido por la carga, el motor
puede desenergizarse antes de sobrecalentarse.
Muchas sobrecargas térmicas electrónicas de tecnologías antiguas
no consideran los valores de la corriente de carga debajo del valor de
captación de corriente para carga completa (FLA). Los relevadores de
sobrecarga modernos deberían modelar corrientes por encima y por
debajo de la corriente de captación FLA para lograr un rendimiento
óptimo del motor y una larga vida del aislamiento.
En motores de inducción más grandes, el bloqueo o pérdida de
ventilación puede ocasionar puntos calientes que la protección
basada en corriente no logra detectar sin el uso de sensores de
temperatura. Los detectores de temperatura de resistencia (RTD)
son dispositivos de bajo costo instalados entre los bobinados del
estator durante su fabricación y pueden incluirse en los rodamientos
de motores.
Protección de motores
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
©2018 Controladores y Relevadores de Protección de Littelfuse 499 www.littelfuse.com/relayscontrols
Descripción general
Conocimientos aplicados | Respuestas entregadas
Un RTD tiene un cambio lineal en la resistencia respecto de su rango
de temperatura nominal. Utilizando la información proveniente de
un RTD, los relevadores de seguridad para motores pueden brindar
protección contra pérdida de ventilación, pérdida de enfriamiento o
temperaturas en ambientes severos.
La lectura de la temperatura RTD puede también utilizarse como
una entrada al modelo térmico para mejorar la protección. Cuando
se logra la compensación de un motor caliente, la temperatura
RTD-estator máxima se utiliza para derivar el modelo térmico
incrementando el I2
t utilizado cuando la temperatura RTD es mayor a
la temperatura del modelo térmico.
Sobrevoltaje, trabas y bajo voltaje
Las fallas por sobrevoltaje, conocidas también como cortocircuitos,
pueden causar fallas catastróficas e incendios en los motores. Los
sobrevoltajes pueden estar provocados por fallas entre fases, de fase
a tierra, y de fase a tierra, y de tierra a fase.
Una traba mecánica, tal como un rodamiento o carga defectuosos,
puede ocasionar una detención o un bloqueo en el paso de corriente
de un motor, que llevaría a un sobrecalentamiento.
La protección contra bajo voltaje se basa en la protección contra
pérdida de carga y se establece en diversas normas como medida
de seguridad. Una bomba de agua con aspiración de vacío puede
ser peligrosa. En general, el agua brinda enfriamiento a la bomba.
Sin el agua de enfriamiento, la temperatura de la cubierta puede
alcanzar un valor extremadamente alto. Si las válvulas se abren bajo
tales condiciones y el agua fría alcanza las piezas metálicas a alta
temperatura, las presiones de vapor resultantes podrían destruir la
bomba y ocasionar graves heridas al personal.
Solución: un relevador de seguridad de motor multifuncional tiene
múltiples configuraciones de alarma y disparo para protección de
corrientes. La protección contra sobrevoltaje en general se define
por encima de la corriente del rotor bloqueado y tiene un retardo
de tiempo mínimo. La protección contra sobrecorriente puede
utilizarse para disparar un interruptor en vez de un arrancador
debido a los altos niveles de falla. La protección contra trabas se
define por debajo de la corriente mínima y tiene un retardo de
tiempo ligeramente mayor. La protección contra trabas previene el
calentamiento del motor que de otra manera llevaría a un disparo
por sobrecarga. La protección contra trabas se habilita después de
que el motor esté en funcionamiento para evitar activaciones por la
corriente de encendido. La corriente mínima se define por debajo de
la corriente de carga completa para detectar pérdidas de carga.
Bajo voltaje y sobrevoltaje
Los sobrevoltajes causan deterioro del aislamiento y rupturas
prematuras. Los voltajes insuficientes, tales como los ocasionados
por caídas de voltaje, conlleva al sobrecalentamiento del motor. El
torque desarrollado por un motor eléctrico varía en relación con el
valor al cuadrado del voltaje aplicado. Una reducción del 10 % en el
voltaje da como resultado un 19 % de reducción en el torque. Si no
se reduce la carga del motor, el motor estará sobrecargado.
Solución: la protección contra bajo voltaje y sobrevoltaje son
características que brindan los relevadores de seguridad para
motores de alto rendimiento. La protección del voltaje puede
emplearse proactivamente para limitar un encendido.
Averías por puesta a tierra
Las fallas por puesta a tierra son las fallas más comunes y pueden
implicar problemas graves. La protección contra fallas por puesta
a tierra, tal como se describe en otras secciones, es un factor
importante en las cargas de motores.
Solución: el relevador de seguridad para motores debería tener la
capacidad de detectar corrientes de fuga de bajo nivel al utilizarse en
un sistema conectado a tierra de resistencia.
TEMPERATURA MÁS ALTA (°C)
CLASE F
100,000
1
50,000
10,000
— 10
— 7
— 5
— 1
— 2
— 5
— 1
— 20
— 10
— 5
— 3
— 2
— 1
5000
1000
500
100
100
110
120
130
140
150
160
180
200
220
240
260
280
300
50
10
5
VIDA ÚTIL PROMEDIO DEL MOTOR (HORAS)
(AÑOS) (MESES) (DÍAS)
FIGURA 11
CORRIENTE DEL MOTOR (% FLA)
0 100 200 300 400 500 600 700 800 900 1000
TIEMPO PARA DISPARO (SEGUNDOS)
1
2
3
4
5
6
8
10
20
30
40
50
60
80
100
200
300
400
500
600
800
1000
2000
3000
4000
5000
6000
8000
10000
1100 1200 1300 1400 1500 0.1
0.2
0.3
0.4
0.5
0.6
0.8
SE MUESTRA EN 1,15
FACTOR DE SERVICIO 1,00 A 1,25
EL TIEMPO PARA ACTIVACIÓN DISMINUYE
A MEDIDA QUE EL I2
t AUMENTA
0 % UTILIZADO I2 t (frío)
25 % UTILIZADO I2 t (frío)
75 % UTILIZADO I2 t (frío)
50 % UTILIZADO I2 t (frío)
FIGURA 12
Protección de motores
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
Descripción general
www.littelfuse.com/relayscontrols 500 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
Averías en bobinado de resistencia alta
Las fallas de bobinado a bobinado y de bobinado a tierra dentro del
motor son difíciles de detectar utilizando CT de fallas por puesta a
tierra y de fases debido a las bajas magnitudes de corriente.
Solución: la protección diferencial en relevadores de seguridad para
motores de alto rendimiento utiliza múltiples CT para comparar la
corriente que ingresa y sale del bobinado Si existiera una diferencia en
las corrientes entonces habría una filtración. Esta protección sensible
se utiliza en motores muy grandes o de nivel crítico.
Desbalance de corriente y voltaje, pérdida de fases,
fase inversa
Los dispositivos de protección de motores antiguos no tenían en
cuenta el desbalance de corriente y a menudo en la actualidad se
pasa por alto. El desbalance aumenta la corriente de secuencia
negativa, que genera un mayor calentamiento del rotor.
La pérdida de fase también se denomina como fase individual.
Cuando ocurre una pérdida de fase, la corriente de secuencia
negativa es igual a la corriente de secuencia positiva y el desbalance
es del 100 %. En esta condición, un solo bobinado de un motor
trata hace el trabajo de tres, lo que lleva inevitablemente al
sobrecalentamiento.
Las fases inversas hacen que la corriente de secuencia negativa
y el voltaje sean mayores que la corriente de secuencia positiva
y el voltaje. La protección basada en el voltaje tiene mayores
ventajas para evitar un encendido con la secuencia incorrecta. En
determinadas aplicaciones, tratar de girar el motor en sentido opuesto
a su funcionamiento podría causar daños en la carga. Un ejemplo de
esto son ciertos diseños de impulsores en bombas de pozos.
Solución: los relevadores de seguridad para motores modernos
utilizan análisis de señales digitales para medir los componentes
de secuencia verdadera. Estos componentes de secuencia se
utilizan para cálculos de modelos térmicos y para tener en cuenta
el calentamiento adicional. El desbalance de voltaje que se deriva
en un desbalance de corriente puede utilizarse como limitador de
encendido. Los componentes de secuencia se utilizan también para
calcular desbalance, pérdida de fase y fase inversa.
Mando por impulsos en motores
Los motores de diseño NEMA están clasificados para dos encendidos
en frío y un encendido en caliente por hora. El mando por impulsos en
motores se refiere a los encendidos en exceso, que pueden causar
sobrecalentamiento. Es posible que el motor no genere toda su
velocidad y el enfriamiento por aire forzado no sea efectivo.
Solución: Debido a que el modelo térmico rastrea con exactitud la
capacidad térmica utilizada del motor en todo momento, durante los
encendidos y entre encendidos, la relación de encendidos por hora
no sería necesaria.
Se incluye para la compatibilidad con relevadores de seguridad que
no tienen funciones de modelado térmico dinámico.
Protección de motores y NEC®
El NEC® establece que el motor esté protegido por dispositivos de
sobrecarga contra calor excesivo debido a sobrecargas y fallas de
encendido (Artículo 430, Sección III). El Artículo 430, Sección IV,
establece también el uso de dispositivos para proteger contra
sobrecorrientes tales como cortocircuitos y puestas a tierra.
Ambos requerimientos del NEC® y muchas otras funciones pueden
satisfacerse con el uso de un relevadores de seguridad multifuncional
para motores.
El Artículo 430.32 (A)(4) establece el uso de un dispositivo
de protección con detectores de temperatura integrados que
interrumpen la corriente en el motor cuando este alcanza un aumento
de temperatura superior al registrado en la ficha de identificación
en una temperatura ambiente de 40 °C para motores con más de
1500 HP.
El NEC define los requerimientos mínimos y tiene como propósito
brindar protección contra incendios. Los relevadores de seguridad
pueden brindar muchas mejoras en relación a la protección contra
incendios simple.
Comunicaciones
Se pueden incorporar comunicaciones por red a un relevador de
seguridad para motores, a fin de permitir la medición remota de
corrientes, voltajes y temperaturas. El registro de datos es una
función útil para resolver problemas y comparar secuencias de
eventos con etapas de un proceso. El análisis de la información a
menudo indica problemas operacionales.
Protección contra arco eléctrico
Consecuencias de los arcos eléctricos
Los arcos eléctricos son descargas luminosas, intensas y
descontroladas de energía eléctrica que ocurren cuando la corriente
eléctrica fluye a través de lo que normalmente es un medio de
aislamiento. La principal causa de fallas por arco eléctrico son las
rupturas del aislamiento. Tales rupturas pueden ser ocasionadas por
materiales de aislamiento defectuosos o desgastados, mantenimiento
irregular o indebido, polvo, humedad, gérmenes y errores humanos
(tocar una sonda de prueba en la superficie incorrecta, o cuando una
herramienta cae y toca conductores con línea viva).
Los eventos de arco eléctrico son peligrosos, y potencialmente
fatales, para el personal. De acuerdo con la OSHA, los eventos de
arco eléctrico en la industria causan cerca del 80 % de los accidentes
relacionados con la energía eléctrica y los fallecimientos entre
trabajadores eléctricos calificados. Incluso si se evitan los accidentes
con el personal, los arcos eléctricos pueden destruir el equipo, que
generaría costos por reparación o tiempo inactivo.
Normas de seguridad sobre arcos eléctricos
NFPA 70E, Manual sobre Seguridad Eléctrica en el Lugar de Trabajo.
Describe las prácticas y los estándares que deberían seguir las
compañías para proteger a sus trabajadores y sus equipos contra
arcos eléctricos y otros peligros eléctricos. Especifica las prácticas
diseñadas para garantizar que existan condiciones de trabajo
eléctricamente seguras. En Canadá, la Norma CSA Z462, Seguridad
Eléctrica en el Lugar de Trabajo, especifica las prácticas seguras en el
lugar de trabajo. Existen también otras reglamentaciones provinciales
en relación con la seguridad eléctrica.
Las normas NFPA 70E y CSA Z462 establecen que la responsabilidad
de crear lugares de trabajo seguros para trabajadores eléctricos
recae tanto en los empleadores como en los empleados, y no solo
considera la seguridad sino también el pleno entendimiento sobre las
mejores prácticas y procesos posibles, que sean implementados y
aplicados para lograr óptimos resultados. Utilizar relevadores de arco
eléctrico es una manera de proteger la fiabilidad funcional del tablero
de distribución y al mismo tiempo cumplir con los requerimientos de
las normas NFPA 70E y CSA Z462.
Protección contra arco eléctrico
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
©2018 Controladores y Relevadores de Protección de Littelfuse 501 www.littelfuse.com/relayscontrols
Descripción general
Protección contra arco eléctrico Conocimientos aplicados | Respuestas entregadas
Mitigación de arcos eléctricos
La NFPA 70E establece en detalle los procedimientos de protección
para evitar eventos de choques eléctricos y arcos eléctricos. Sin
embargo, en ocasiones, es necesario trabajar en circuitos de línea
viva. En tales circunstancias, la NPFA 70E establece las distancias de
acercamiento y el uso de equipo de protección personal (EPP).
Los fusibles limitadores de corriente o interruptores automáticos
limitadores de corriente ayudan a proteger contra arcos eléctricos.
Permiten que solo cierta cantidad de energía pase antes de abrir
un circuito. Debido a que los arcos eléctricos pueden generar una
fracción de corriente de falla forzada, no se debe confiar en los
interruptores automáticos para distinguir entre la corriente de arco y
una corriente de inserción típica.
La conexión a tierra de resistencia alta (HRG) es otra técnica para
proteger contra arcos eléctricos. Si una fase presenta fallas en la
puesta a tierra, entonces la resistencia limita la corriente a solo unos
amperios; un nivel que no provoca tiempos de inactividad por el
disparo del dispositivo de protección contra sobrecorriente y que no
es suficiente para un arco eléctrico. Es importante recordar que si
bien la conexión a tierra de resistencia previene los arcos eléctricos en
cortos de fase a tierra, no tendrá ningún efecto en los cortos de fase
a fase.
Otra manera de mitigar los riesgos de arcos eléctricos es el rediseño
del cuadro eléctrico. Los tableros del cuadro eléctrico pueden
diseñarse para contener y canalizar la energía alejándola del personal
durante un arco eléctrico.
Relevadores de arco eléctrico
Los relevadores de arco eléctrico son dispositivos basados en
microprocesador que utilizan sensores ópticos para detectar el inicio
de un arco eléctrico. Los sensores están ubicados estratégicamente
en varios cubículos o cajones en el interior del cuadro eléctrico.
Instalar un relevador de arco eléctrico para detectar rápidamente el
desarrollo de arcos eléctricos reduce considerablemente el tiempo
de liberación total y la cantidad de energía liberada por una falla de
arco eléctrico. Además, habría menores daños en el equipo y menos
heridas graves para el personal.
Criterios de selección del relevador de arco eléctrico
Al seleccionar un relevador de arco eléctrico, existen seis criterios
importantes para tener en cuenta:
1. Tiempo de reacción
2. Fiabilidad del disparo
3. Anulación de disparos falsos
4. Diseño e instalación del sensor
5. Facilidad de uso
Tiempo de reacción
Ya que la luz es la indicación más notable de que ha ocurrido un
arco eléctrico, los relevadores de arco eléctrico utilizan sensores de
luz óptica para detectar el arco que se está formando. La salida del
sensor de luz está cableada hasta el relevador de arco eléctrico, que
activa un circuito que interrumpe la alimentación eléctrica en el arco.
El tiempo de respuesta de un relevador de arco eléctrico es de
aproximadamente 1-5 ms en intensidades de luz de casi 10 000 lux, o
superior. Dentro de dicho marco de tiempo, la salida del sensor óptico
puede accionar un conmutador o interruptor automático para cortar
la corriente que alimenta el arco. El tiempo de liberación de corriente
general depende de la estrategia de protección implementada y
del rendimiento del conmutador externo o interruptor automático
utilizado. En general, el interruptor tardará un tiempo adicional de
35-50 ms para abrirse, dependiendo del tipo de interruptor y el
mantenimiento realizado.
La salida electrónica de activación es una función inherente al tipo de
relevador de salida utilizado. Las salidas de estado sólido (por ejemplo,
transistores bipolares de puerta aislada, IGBT) son mucho más
rápidas que un relevador electromecánico y pueden operar dentro de
200 microsegundos.
Fiabilidad de disparo
El disparo fiable es la característica más importante de un relevador
de arco eléctrico, ya que esto garantiza la mitigación de fallas por
formación de arcos eléctricos. Se deben considerar dos aspectos de la
fiabilidad: redundancia de disparo y monitoreo de estado del sistema.
Disparo redundante. Los relevadores de arco eléctrico deberían
ofrecer una función de disparo redundante, que significa que tenga
tanto una lógica de ruta primaria y secundaria de disparo. La ruta
primaria es controlada por el microprocesador interno y su software
integrado, y funciona activando la bobina del relevador de disparo
primario.
La ruta redundante generalmente utiliza un dispositivo de estado
sólido discreto que no pasa a través del microprocesador. Cualquier
falla en la ruta primaria (microprocesador) hará que la unidad conmute
automáticamente a su ruta redundante, que activará un relevador de
disparo derivado sin retardo cuando una entrada del sensor esté por
encima del límite de detección de luz.
Una desventaja, a menudo pasada por alto, de una ruta de disparo
de estado sólido en comparación con un circuito basado en
microprocesador es el tiempo de reacción cuando el relevador se
energiza por primera vez. Los errores de conexión, las herramientas
dejadas en ubicaciones peligrosas y la tensión periódica por la
energización son causales de riesgos de arco eléctrico durante el paso
de energía. Un microprocesador puede requerir 200 ms o más antes
de poder iniciar un escaneo de los sensores ópticos. Sin embargo, una
ruta de disparo de estado sólido puede detectar un arco y enviar una
señal de disparo tan pequeña como 2 ms. Además, hay funciones de
control automático de protección que alertan a los operadores cuando,
por ejemplo, el microprocesador falla.
Monitoreo de estado. El monitoreo de estado garantiza que el
sistema esté en buenas condiciones de funcionamiento y debería
cubrir desde los sensores de luz hasta la salida del sistema de
circuitos de disparo del relevador de arco eléctrico. El monitoreo
de estado comienza en los sensores. Se envía una señal desde el
relevador hasta los sensores de luz, donde el sensor detecta una luz
de prueba y la envía de vuelta al relevador. Para el caso de sensores
de fibra óptica, esta función también verifica la longitud total de la
fibra, y que no esté rota ni dañada. La indicación de estado por sensor
es crucial para prevenir operaciones de mantenimiento en equipo
donde la unidad de protección no funciona. Además, tiene el valor
agregado de brindar una rápida ubicación de las fallas.
Al seguir la ruta de una señal de disparo desde el sensor, el monitoreo
interno debe también incluir el sistema de circuitos de disparo
primario y redundante. El voltaje bajo en el IGBT indica una falla en
las conexiones o un error en la bobina de disparo, y un voltaje alto
corresponde a una señal de error en el conmutador del IGBT, que
se registran y reportan. El IGBT también tiene protección térmica
contra sobrecargas, y se apagará siempre que se identifique un
sobrecalentamiento. Sin embargo, la protección térmica tiene un
retardo de 100 ms antes de accionarse, que significa que incluso una
bobina peligrosamente sobrecalentada tratará de general señales de
disparo antes de reanudar la protección térmica.
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
Descripción general
www.littelfuse.com/relayscontrols 502 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas Aplicaciones de los CT
III. Aplicaciones de los CT
Transformadores de corriente (CT)
Un transformador de corriente se define como aquel transformador
que produce una corriente en su circuito secundario proporcional a la
corriente en su circuito principal.
Aunque hay otros tipos de CT, solo nos enfocaremos en los
transformadores de corriente tipo ventana (o anillo). Los CT tipo
ventana reciben su nombre por su diseño, que consta de un núcleo
en forma de anillo. Dicho núcleo está formado por una longitud de
regletas de material ferromagnético bien ajustado para formar un
núcleo en forma de anillo.
Un CT opera bajo un principio de balance de flujo, tal como se
muestra en la Figura 1. Si el bobinado primario se energiza mientras
el circuito secundario está abierto, el transformador se convierte en
un inductor con núcleo de hierro. La corriente primaria genera un
flujo magnético en el núcleo tal como se muestra (la dirección de
flujo puede determinarse mediante la regla de la mano derecha).
Cuando el bobinado secundario se conecta a una carga o está en
cortocircuito, la corriente fluye a través del bobinado secundario,
creando un flujo magnético en el núcleo en oposición al flujo
magnetizado creado por la corriente primaria. Si se ignoran las
pérdidas, el flujo secundario equilibra exactamente al flujo primario.
Este fenómeno se conoce como Ley de Lenz.
FLUJO SECUNDARIO
EMBOBINADO
SECUNDARIO
EMBOBINADO
PRIMARIO
T2
T1 FLUJO PRIMARIO
FIGURA 1
Longitud de la guía
La resistencia del conductor secundario del CT no puede ser
ignorada, en particular si son CT de voltiamperios (VA). Por ejemplo,
observemos un relevador de sobrecarga electrónica.
Impedancia de entrada CT del relevador o la carga (ZB) = 0,01 Ω
Corriente máxima (I) = 10 A
Clasificación nominal del CT (P) = 5 VA
Ahora calculemos la longitud máxima de un conductor n.º 14 AWG
que resultará en una exactitud nominal para corriente secundaria de
10 A. Cálculo de la impedancia total máxima (ZT
):
P = I²ZT
ZT
= P/I² = 5/10² = 0,05 Ω
Anulación de disparos perjudiciales
Un sistema de relevador de arco eléctrico típico tiene una función
de medición de corriente trifásica que detecta y reacciona ante
condiciones de cortocircuitos o sobrecorriente. Si bien esto no es un
requisito para que el sistema funcione, es una opción que aumentará
la fiabilidad del sistema (minimiza los disparos no deseados).
Si la lógica de microprocesador recibe una entrada desde un sensor
de luz, verifica una entrada de aumento rápido a partir de los
transformadores de corriente. Se deben cumplir dos funciones antes
de que la señal de disparo sea enviada al interruptor automático: un
flujo de corriente que exceda la corriente de funcionamiento normal
del sistema (el nivel límite es ajustable entre 10 % y 1000 % de la
corriente de carga completa) y una señal desde el sensor de arco
eléctrico, asumiendo que el sensor ha reaccionado a una fuente de luz
de alta intensidad.
Diseño e instalación del sensor
Las instalaciones de relevadores de arco eléctrico utilizan múltiples
sensores de luz de punto fijo cerca de las barras ómnibus horizontales
y verticales donde las fallas por arco eléctrico tienden a ocurrir en los
tableros de mecanismo de control del alimentador. Se debe instalar un
número suficiente de sensores
para cubrir todas las áreas
accesibles, incluso si la política
establece que debe realizarse el
trabajo únicamente en sistemas
desenergizados. Al menos uno
de los sensores debería tener
la capacidad de visualizar una
falla por arco eléctrico si una
persona bloquea el campo
de visualización de los otros
sensores. Los sensores de luz
pueden instalarse también en
otros gabinetes eléctricos y en
paneles que estén sujetos a
mantenimiento y reparaciones
rutinarios.
Un sensor de fibra óptica, con un campo de visión de 360° para
detectar luz, permite un posicionamiento más flexible de las
ubicaciones de detección de luz, ya que los hilos de fibra óptica
pueden acoplarse en un gabinete o panel para cubrir redes de
componentes complejas.
Software y hardware fáciles de instalar
Otro factor importante para considerar es la facilidad de uso. Algunos
relevadores pueden requerir de ensamble, calibración, o configuración
avanzada en campo antes de la instalación. Es crucial considerar
aquellos pasos adicionales y las capacidades de los operadores que
utilizarán los dispositivos. A menudo, dispositivos muy complejos
pueden utilizarse de forma incorrecta debido a una configuración
o un ajuste inadecuados,
que podrían afectar el
funcionamiento del dispositivo
en general. Pocos relevadores
de arco eléctrico tienen
software que
incluye el registro
de eventos.
Para facilitar la
resolución de
problemas, este
software debería
registrar el sensor
específico que
inició la falla en
los registros de
datos.
PGA-LS10
(sensor de puntos)
PGA-LS20/
PGA-LS25
(sensor de fibra óptica)
Batería de seguridad
de 24 V CC
(opcional)
(recomendados)
(Relé de seguridad de arco eléctrico)
PGR-8800
CTs
CT DE FASE SECUNDARIA DE 5 A
L2
L1
A
B
C
Ejemplos de instalación de
sensor de luz para relevador de
arco eléctrico en mecanismo
de control.
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
©2018 Controladores y Relevadores de Protección de Littelfuse 503 www.littelfuse.com/relayscontrols
Descripción general
Conocimientos aplicados | Respuestas entregadas
IV. CONVERSIÓN DE CONEXIÓN A TIERRA DE
RESISTENCIA
Conversión de sistemas no conectados a tierra a
sistemas conectados a tierra de resistencia
La conexión a tierra de resistencia protege a un sistema contra
sobrevoltajes transitorios eléctricos ocasionados por fallas de puesta
a tierra intermitentes, y proporciona un método para identificar
las fallas de conexión a tierra. (Los sobrevoltajes transitorios
eléctricos y la incapacidad de identificar fallas de conexión a tierra
son los problemas de seguridad más comunes en los sistemas no
conectados a tierra).
La conversión de fuentes conectadas en triángulo o en estrella
con neutros no accesibles requiere un transformador en zigzag
para derivar un neutro accesible para conexión de un resistor de
neutro a tierra (NGR). El neutro solo se utiliza para el NGR y no para
distribución. Durante el funcionamiento normal, la única corriente
que fluye en el transformador en zigzag es una corriente de
magnetización extremadamente pequeña. Al conectar a tierra una
fase, el NGR y el transformador en zigzag proporcionan una ruta para
que la corriente de falla de conexión a tierra fluya.
Figura 1
Nota de diseño 1: una conversión de zigzag requiere una conexión
trifásica en el sistema de alimentación existente, en general en el
transformador principal o en el mecanismo de control. Ver Figura 1.
Nota de diseño 2: el resistor de corriente de pico circulante
debe ser mayor a la corriente de carga capacitiva del sistema (ver
Sección I).
Nota de diseño 2: Los sistemas de protección, coordinación y
anunciación dependen de la integridad del NGR. Se recomienda el
monitoreo de NGR con las series SE-330 o SE-325.
Conversión a un sistema conectado a tierra de resistencia
Cálculo de la resistencia del conductor máxima (ZW):
ZT
= ZW+ZB
ZW= 0,05-0,01 = 0,04 Ω
Si analizamos la resistencia de un conductor n.º 14 AWG
encontramos que es igual a 2,6 Ω/304,8 m (1000 ft)
Por consiguiente, la longitud del conductor es = ZW /resistencia
de conductor n.º 14 AWG
Longitud de conductor máxima= (0,04 x 1000)/2,6 = 4,69 m
(15,4 ft)
Instalación de CT
Un CT no debería funcionar con su circuito secundario abierto. Si el
circuito secundario está abierto cuando la corriente primaria fluye,
la corriente secundaria tratará de seguir fluyendo para mantener el
balance de flujo. A medida que la impedancia del circuito secundario
aumenta desde un valor bajo a un valor alto, el voltaje en el bobinado
secundario aumentará hasta el voltaje requerido para mantener el
flujo de corriente. Si el voltaje secundario alcanza el voltaje de ruptura
del bobinado secundario, el aislamiento fallará y se dañará el CT.
Además, este aislamiento representa un peligro de choque eléctrico
para el personal.
Al utilizar un CT tipo anillo para monitorear un conductor individual
o múltiples conductores, los conductores deberían estar centrados
en la ventana de CT, tal como se muestra en la Figura 2, y deberían
estar perpendiculares a la apertura del CT.
En algunas aplicaciones es difícil, o prácticamente imposible, instalar
el conductor primario a través de la ventana CT (ejemplo: estructura
de barra ómnibus existente). Para estas aplicaciones, a veces se
utilizan CT con núcleo fraccionado. El rendimiento de los CT de
núcleo fraccionado es menor a los CT de núcleo sólido.
A
A
B
B
C C
A
B C
ESPACIADOR
Incorrecto Correcto
FIGURA 2
Las características de los CT usualmente se especifican a una
frecuencia única tal como 50 o 60 Hz. Así, surge una pregunta:
¿qué ocurre cuando se utilizan CT con controladores de frecuencia
variable (VFD)? Para CT lineales que son aproximadamente
10 veces la corriente primaria nominal a 60 Hz, la relación Voltios/
Hertz es aproximadamente constante. Es decir, para todas las
demás condiciones de funcionamiento a 6 Hz, el CT será lineal para
únicamente 1 vez la corriente nominal y a 30 Hz el CT será lineal
5 veces la corriente nominal. Para un CT de núcleo de acero-silicona
estándar, la frecuencia de ancho de banda superior es de 5 kHz
aproximadamente.
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
Descripción general
www.littelfuse.com/relayscontrols 504 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas Sistemas conectados a tierra por resistencia, de conexión directa a tierra y no conectados a tierra
SISTEMA NO CONECTADO A TIERRA
FASE C
CAPACITANCIA
DE SISTEMA
DISTRIBUIDA
FASE A
FASE B
CARGA
NEUTRO
FASE C
FASE A
FASE B
CONEXIÓN A TIERRA
CARGA
NEUTRO
CONEXIÓN A TIERRA
FASE C
FASE A
FASE B
CARGA
Ventajas
• Posible funcionamiento con una fase defectuosa
Desventajas
• Las fallas de conexión a tierra son difíciles de identificar
• Los sobrevoltajes transitorios eléctricos dañan el equipo
SISTEMAS DE CONEXIÓN DIRECTA A TIERRA
Ventajas
• Eliminan los sobrevoltajes transitorios eléctricos
• Activación selectiva posible
Desventajas
• Daños en puntos de falla de alto costo
• No se pueden operar con una falla de conexión a tierra
• Riesgo de arco eléctrico y fallas de conexión a tierra
• Mayor riesgo de arcos eléctricos
SISTEMAS DE CONEXIÓN A TIERRA DE RESISTENCIA
Ventajas
• Daños menores en puntos de falla y riesgo de arcos eléctricos
• Eliminan los sobrevoltajes transitorios eléctricos
• Simplifica la identificación de fallas de conexión a tierra
• Funcionamiento continuo con una falla de conexión a tierra
• Activación selectiva posible
• Cero riesgo de arco eléctrico o fallas de conexión a tierra
Desventajas
• Las fallas del resistor de neutro a tierra dejan el sistema de
protección por fallas de conexión a tierra y detección de corriente
inoperante.
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
©2018 Controladores y Relevadores de Protección de Littelfuse 505 www.littelfuse.com/relayscontrols
Descripción general
Conocimientos aplicados | Respuestas entregadas
Conversión de sistemas con conexión directa a
tierra a sistemas conectados a tierra de resistencia
La conexión a tierra por resistencia protege a un sistema contra
peligros de arco eléctrico causados por fallas de conexión a tierra
y proporciona un método para funcionamiento continuo o un
procedimiento de apagado organizado. (Se calcula que las fallas de
conexión a tierra son el 98 % de las fallas eléctricas).
Debido a que el punto neutro de la fuente de alimentación está
disponible, la conexión sólida entre el neutro y tierra se reemplaza
con un resistor de conexión a tierra. Este resistor limita la corriente
de falla de conexión a tierra a un valor predeterminado, generalmente
5 A para sistemas de 480 V (la corriente de carga capacitiva del sistema
usualmente es inferior a 3 A). Al limitar la corriente de falla de conexión
a tierra a 5 A o menos, no hay riesgos de arco eléctrico asociados
con las fallas de conexión a tierra. Esto permite el funcionamiento
continuo durante la primera falla en la conexión a tierra.
Durante una falla de conexión a tierra en un sistema conectado a
tierra de resistencia (RG), ocurre una variación de voltaje (la misma
variación se experimenta en sistemas no conectados a tierra). La
fase defectuosa se reduce a ~0 V, las fases no defectuosas generan
un voltaje de línea a línea con respecto a la conexión a tierra, y el
punto neutro genera un voltaje de línea a neutro con respecto a
la tierra.
Figura 2
Nota de diseño 1: una conversión de NGR para un sistema con
conexión directa a tierra requiere de una conexión de neutro hacia el
sistema de alimentación existente, en general en el transformador
principal o en el mecanismo de control. Ver Figura 2.
Nota de diseño 2: la variación de voltaje requiere que el equipo
esté completamente clasificado para un voltaje de línea a línea con
respecto a la conexión a tierra. Esto puede requerir que los TVSS,
VFD, medidores, etc. se reconfiguran o reemplacen.
Nota de diseño 3: la variación de voltaje además restringe
la distribución a neutro. El neutro generalmente no puede ser
distribuido debido a su aumento de potencial durante las fallas de
conexión a tierra. Las cargas de voltaje línea a neutro de fase única
deben estar conectadas a un transformador de aislamiento de 1:1 o
convertirse a cargas de línea a línea.
Nota de diseño 4: el resistor de corriente de pico circulante
debe ser mayor a la corriente de carga capacitiva del sistema (ver
Sección I).
Nota de diseño 5: los sistemas de protección, coordinación y
anunciación dependen de la integridad del NGR. Se recomienda el
monitoreo con un monitor de NGR con las series SE-330 o SE-325.
Sistemas conectados a tierra por resistencia, de conexión directa a tierra y no conectados a tierra
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
Descripción general
www.littelfuse.com/relayscontrols 506 ©2018 Controladores y Relevadores de Protección de Littelfuse
Conocimientos aplicados | Respuestas entregadas
NÚMEROS DE DISPOSITIVO IEEE
1 - Elemento maestro
2 - Relevador de activación o desactivación del retardo de tiempo
3 - Relevador de interbloqueo o verificación
4 - Contactor maestro
5 - Dispositivo de detención
6 - Interruptor automático de encendido
7 - Relevador de índice de cambio
8 - Dispositivo de desconexión de control de alimentación
9 - Dispositivo de inversión
10 - Interruptor de unidad de secuenciación
11 - Dispositivo multifuncional
12 - Dispositivo de exceso de velocidad
13 - Dispositivo de velocidad síncrono
14 - Dispositivo de baja velocidad
15 - Dispositivo de velocidad, frecuencia o adaptación
16 - Dispositivo de comunicaciones por datos
17 - Interruptor de descarga o derivación
18 - Dispositivo de aceleración o desaceleración
19 - Contactor de transición de encendido a funcionamiento
20 - Válvula operada electrónicamente
21 - Relevador de distancia
22 - Interruptor automático de ecualizador
23 - Dispositivo de control de temperatura
24 - Relevador de voltios por hertz
25 - Dispositivo de sincronización o verificación de sincronismo
26 - Dispositivo térmico de aparato
27 - Relevador de bajo voltaje
28 - Detector de fuego
29 - Interruptor o contactor de aislamiento
30 - Relevador indicador
31 - Dispositivo de excitación separado
32 - Relevador de alimentación direccional
33 - Interruptor de posición
34 - Dispositivo de secuenciación maestro
35 - Dispositivo contra cortocircuitos, anillos
colectores o funcionamiento por magnética
36 - Dispositivos de voltaje de polarización o polaridad
37 - Relevador de corriente mínima o potencia mínima
38 - Dispositivo de protección de rodamientos
39 - Monitor de estado mecánico
40 - Relevador de campo (excitación mínima/excesiva)
41 - Interruptor automático de campo
42 - Interruptor automático de ejecución
43 - Dispositivo selector o de transferencia manual
44 - Relevador de encendido de unidad de secuenciación
45 - Monitor de estado atmosférico anormal
46 - Relevador de corriente de balance de fases o fase inversa
47 - Relevador de voltaje de balance de fases o secuenciación
de fases
48 - Relevador de secuencia incompleta
49 - Relevador térmico, de transformador o máquina
50 - Relevador de sobrecorriente instantáneo
51 - Relevador de sobrecorriente de tiempo inverso de CA
52 - Interruptor automático de CA
53 - Relevador generador de CC o excitador
54 - Dispositivo de acoplamiento de engranajes en movimiento
55 - Relevador de factor de potencia eléctrica
56 - Relevador de aplicación en el campo
57 - Dispositivo de conexión a tierra (puesta a tierra) contra
cortocircuitos
58 - Relevador de fallas de rectificación
59 - Relevador de sobrevoltaje
60 - Relevador de balance de corriente o voltaje
61 - Sensor o interruptor de densidad
62 - Relevador de activación o desactivación del retardo de tiempo
63 - Interruptor de presión
64 - Relevador detector de conexión a tierra (puesta a tierra)
65 - Controlador
66 - Dispositivo de mando por impulsos o escalonamiento
67 - Relevador de sobrecorriente direccional de CA
68 - Relevador de bloqueo o “fuera de rango”
69 - Dispositivo de control permisible
70 - Reostato
71 - Interruptor de nivel de líquidos
72 - Interruptor automático de CC
73 - Contactor de resistor-carga
74 - Relevador de alarma
75 - Mecanismo de cambio de posición
76 - Relevador de sobrecorriente de CC
77 - Dispositivo de telemetría
78 - Relevador de medición de ángulo de fase
79 - Relevador de reconexión de CA
80 - Interruptor de flujo
81 - Relevador de frecuencia
82 - Relevador de reconexión de CC
83 - Relevador de transferencia o control selectivo automático
84 - Mecanismo de funcionamiento
85 - Relevador de cable auxiliar, portador o de comunicaciones
86 - Relevador de bloqueo
87 - Relevador de seguridad diferencial
88 - Generador para motores o motor auxiliar
89 - Interruptor de línea
90 - Dispositivo de regulación
91 - Relevador de voltaje direccional
92 - Relevador de potencia y voltaje direccional
93 - Contactor de carga en el campo
94 - Relevador de disparo o de disparo libre
NÚMEROS DE DISPOSITIVO ANSI
AFD - Detector de arco eléctrico
CLK - Fuente de temporización o reloj
DDR - Grabadora de interferencia dinámica
DFR - Grabadora de fallas digital
ENV - Datos de medioambiente
HIZ - Detector de fallas por impedancia alta
HMI - Interfaz hombre/máquina
HST - Historial
LGC - Lógica de esquema
MET - Medición de subestación
PDC - Concentrador de datos en fasores
PMU - Unidad de medición de fasores
PQM - Monitor de calidad de la potencia eléctrica
RIO - Dispositivo de entrada/salida remota
RTU - Concentrador de datos/unidad de terminal remota
SER - Secuencia de grabadora de eventos
TCM - Monitor de circuito de disparo
SOTF - Interruptor de activación por fallas
SUFIJOS TÍPICOS
A - Potencia auxiliar o de alarma
AC - Corriente alterna
B - Ómnibus/Ventilador/Batería
BT - Conector ómnibus
C - Capacitor/Condensador/Compensador/Corriente de
transferencia/Cubierta/Compresor
CC - Corriente continua
E - Excitador
F - Alimentador/Campo/Filamento/Filtro/Ventilador
G - Generador/Conexión a tierra*
M - Motor/Medición
N - Red/Neutro*
P - Bomba/Comparación de fase
R - Reactor/Rectificador/Instalación
S - Sincronización/Secundario/Colador/Colector/Succión
(Válvula)
T - Transformador/Tiratrónico
TH - Transformador (sección de voltaje alto)
TL - Transformador (sección de voltaje bajo)
TT - Transformador (sección de voltaje terciario)
U - Unidad
Nota: Descripciones según Norma IEEE C37.2-1996
*Se recomienda utilizar el sufijo N cuando el dispositivo está conectado en la conexión residual de un circuito polifásico, está conectado a una conexión en triángulo interrumpida o está derivado internamente desde una corriente polifásica o
en varias cantidades de voltaje. Se recomienda utilizar el sufijo G cuando la cantidad medida esté en la ruta de conexión a tierra o, para el caso de detectores de fallas en conexión a tierra, cuando sea la corriente que fluye a tierra.
Números de dispositivo IEEE/ANSI y sufijos típicos
DESCRIPCIÓN GENERAL SOBRE LA PROTECCIÓN
15
©2018 Controladores y Relevadores de Protección de Littelfuse 507 www.littelfuse.com/relayscontrols
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados | Respuestas entregadas
Figura 1
Figura 3
Figura 2
601; 601-CS-D-P1; 777; 777-ACCUPOWER; 777-KW/HP-P2; 77C; 77C-KW/HP
RS485MS-2W; COM 4-20
76,2
[3,000] 58,42
[2,300]
25,4
[1,00]
120,904
[4,760]
66,75
[2,628]
95,25
[3,750] 16,129
[0,635] 17,78
[0,700]
8,89
[0,350]
7,47
[0,294]
14,45
[0,569]
17,27
[0,680]
4,038
[0,159]
10,54
[0,415]
6,96
[0,274]
62,38
[2,456]
73,20
[2,882]
21,08
[0,830]
BLOQUES DE TERMINAL
NO CONECTABLES
®
REMOTE
RESET
ETHERNET
10Base-T
MODBUS
OVERLOAD COMM. STATUS
R R C I1 I2 I3 I4 1 2 3 4 5
CIO-EN ETHERNET Communication and I/O
PILOT DUTY RATING
480VA @ 240VAC, B300
5A @ 240VAC
GENERAL PURPOSE
SCREW TORQUE RATING 0.5 Nm (5 in.-lbs.)
DIGITAL
INPUTS
OUTPUT A OUTPUT B
IND. CONT. EQ.
LISTED
784X
E68520
REV. 00
Series B
76,2
[3,000]
Milímetros [in]
78,74
[3,100]
97,79
[3,850]
91,44
[3,600]
57,91
[2,280]
77,47
[3,050]
30,48
[1,200]
97,79
[3,850]
91,44
[3,600]
67,31
[2,650]
D. 16,51
[0,650]
5,08
[0,200]
ORIFICIOS PARA BUCLE OPCIONALES A ORIFICIOS PASANTES DE CONDUCTOR PRINCIPAL B C
Milímetros [in]
119,38
[4,700]
128,27
[5,050]
52,83
[2,08]
73,66
[2,900]
54,86
[2,16]
19,56
[0,77]
Milímetros [in]
CIO-120-DN-P; CIO-DN-P; CIO-EN; CIO-MB; CIO120-MB; CIO-777-PR
APÉNDICE - PLANOS DIMENSIONALES
16
www.littelfuse.com/relayscontrols 508 ©2018 Controladores y Relevadores de Protección de Littelfuse
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados | Respuestas entregadas
25,98
151,51 [1,02]
[5,97]
161,67
[6,37]
25,15
[0,99]
TORNILLOS DE MONTAJE
n.º 6 INCLUIDOS
PANEL
ESPESOR DE 1,574-2,54
[0,062-0,100]
88,9
[3,5]
19,05
[0,75]
Milímetros [in]
Figura 4
Figura 5
RM2000
inches [millimeters]
115,417
[4,544]
91,922
[3,619]
36,195
[1,425] 22,86
[0,9]
19,05
[0,75]
63,5
[2,5]
RM1000
APÉNDICE - PLANOS DIMENSIONALES
16
©2018 Controladores y Relevadores de Protección de Littelfuse 509 www.littelfuse.com/relayscontrols
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados | Respuestas entregadas
INFERIOR
[2,375]
60,331
[1,75]
44,45
LATERAL
[3,15]
80,01
[0,5]
12,7
Milímetros [in]
Figura 8
ACBC-120; ALT; ALT-XXX-X-SW; ISS-101; PC-XXX-LLC; 201-100-SLD; 201A; 201A-AU;
201A-9; 201-XXX-SP; 201-XXX-DPDT; 201-XXX-SP-DPDT
Figura 6 Figura 7
114,3
4,50
133,9
5,27
74,4
2,93
0,38
9,5
37,2
1,47
Milímetros [in]
74,9
[2,95]
máximo
Tipo
3,8
[0,15]
Tipo
55
[2,17]
Milímetros [in]
102A; 250A; 350; 355; 455; 50R; 50R-400-ALT; CP5; T10
202; 202-200-SP
1,427
[36,245]
67,64
[2,663]
25,4
[1,0]
Milímetros [in]
67,64
[2,663]
6,35 mm (0,25 in)
de diámetro
orificio de montaje para
tornillo de montaje
6,35 mm (0,25 in)
de diámetro
identificación para tornillo
antirrotación
1,427
[36,245]
67,64
[2,663]
25,4
[1,0]
Milímetros [in]
67,64
[2,663]
6,35 mm (0,25 in)
de diámetro
orificio de montaje para
tornillo de montaje
6,35 mm (0,25 in)
de diámetro
identificación para tornillo
antirrotación
APÉNDICE - PLANOS DIMENSIONALES
16
www.littelfuse.com/relayscontrols 510 ©2018 Controladores y Relevadores de Protección de Littelfuse
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados | Respuestas entregadas
Figura 9
[5,50]
139,7
Milímetros [in]
[1,125]
28,57
[3,6]
91,44
Figura 10
Figura 11
Informer; Informer-MS
AF0100
460; 460-15-100-XXX; 460-XXX-SP; ISS-100; ISS-102; PC-102
FRONTAL LATERAL
INFERIOR
[2,084]
Milímetros [in]
52,933
[2,084]
52,933
[0,65]
16,51
[3,0]
76,2
[2,35]
59,69
[3,5]
88,9
[0,65]
16,51
5,025in
127,64mm
3,526in
89,56m
m
0,203in
5,16mm
3,750in
95,25mm
3,015in
76,58m
m
2,356in
59,84m
m
1,391in
35,33m
m
APÉNDICE - PLANOS DIMENSIONALES
16
©2018 Controladores y Relevadores de Protección de Littelfuse 511 www.littelfuse.com/relayscontrols
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados | Respuestas entregadas
111P / 233P / 235P DIMENSIONS
102,36 (4,03")
133,35 (5,25")
114,30 (4,50")
(0,375")
9,53
(2,90")
73,66
(2,16354,94111P / 233P / 235P DIMENSIONS
102,36 (4,03")
133,35 (5,25")
114,30 (4,50")
(0,375")
9,53
(2,90")
73,66
(2,163")
54,94(2,913")
73,99
Figura 12 Figura 13
Figura 15
Figura 14
111P; 233P; 233P-1.5; 235P
0,488
[0,192]
89,179
[3,511]
59,690
[2,350]
89,18
[3,750]
15,773
[0,621]
127,365 [5,025]
Milímetros [in] ISS-105; PC-105
1,78
45,1
0,72
18,2
2,50
63,4
0,20
5,1
VISTA LATERAL
2,25
57,2
1,13
28,6
2,70
68,5
CL
VISTA SUPERIOR
INDICADOR DE
ESTADO LED
ORIFICIO EN
C PARA
TORNILLO N.º 8
Milímetros [in]
LSRX; LSRX-C
79,25
[3,12]
90,43
[3,56]
42,42
[1,67]
27,18
[1,07]
58,42
[2,30]
Milímetros [in]
18,415
[0,725]
LSR-0; LSR-XXX; LSRU
APÉNDICE - PLANOS DIMENSIONALES
16
www.littelfuse.com/relayscontrols 512 ©2018 Controladores y Relevadores de Protección de Littelfuse
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados | Respuestas entregadas
25,4
38,1
(1,50)
51,3
(2,02)
76,7
(3,02)
25,4
(1,0)
1,0
(1,0) 6,35 (0,25)
HSPZA22SL
(2,02)
51,3
(1,50)
38,1
(1,00)
25,4
(1,00)
25,4
(1,00)
25,4
(3,02)
76,7
6,35 (0,25) 6,35 (0,25)
(2,00)
50,8
(2,00)
50,8
(1,51)
38,4
(1,08)
27,4
6,35 (0,25)
DE DIÁMETRO
6,35 (0,25)
TRDU TRU
ASQU; ASTU;
DSQU; DSTU
(1,78)
45,2
(2,39)
60,7
73,9 (2,91)
78,7 (3,1) (1,78)
45,2
(2,39)
60,7
73,9 (2,91)
87,3 (3,44)
(snap for
mounting
bases)
(1,78)
45,2
(2,39)
60,7
73,9 (2,91)
81,3 (3,20) (1,78)
45,2
(2,39)
60,7
73,9 (2,91)
91,6 (3,62)
ERD3425A; ERDI; ERDM
88,9
(3,5)
74,7
(2,94)
20,3
(0,8)
43,2
(1,70)
6,35
(0,25)
49,3 (1,94)
63,5 (2,50)
4,75
(0,187)
ORB; ORM; ORS
12,7
(0,50)
38,1
(1,50)
38,1
(1,50)
53,8
(2,12)
93,7 (3,69)
76,2 (3,00)
4,14 (0,163)
6,35 (0,25)
47,8
(1,88)
0,38 (9,7)
(2,00)
50,8
(2,00)
50,8
(1,21)
30,7
(0,75)
19
6,35 (0,25)
DE DIÁMETRO
6,35 (0,25)
CT; ESD52233; ESDR; FS100 (potencia intermedia); FS200;
FS300; KRD3; KRD9; KRDB; KRDI; KRDM; KRDR; KRDS;
KRPD; KRPS; KSD1; KSD2; KSD3; KSDB; KSDR; KSDS;
KSDU; KSPD; KSPS; KSPU; KVM; T2D120A15M; TA; TAC1;
TDU; TDUB; TDUI; TDUS; TL; TMV8000; TS1; TS2; TS441165;
TS6; TSA141300; TSB; TSD1; TSD2; TSD3411S; TSD6; TSD7;
TSD94110SB; TSDB; TSDR; TSDS; TSS; TSU2000
HLVA6I23; HRDB; HRDI; HRDM; HRDR; HRDS; HRIS;
HRPS; HRV; RS
FA; FS; FSU1000*; PHS*; PTHF4900DK*; SIR1; SIR2;
SLR1*; TH1; THC; TCR9C; THD1B410.5S; THD2;
THD3C42A0; THD7; THDB; THDS; THS
(empalme
para bases de
montaje)
≤76,2
(3,00)
6,35 (0,25)
≤61,2
(2,41)
≤17,52
(0,69)
PLM; PLR; TDB; TDBH; TDBL; TDI; TDIH; TDIL; TDM; TDMB;
TDMH; TDML; TDR; TDS; TDSH; TDSL
FS500; PRLM; TRB; TRM; TRS
38,1
(1,5)
12,7
(0,5)
23,88
(0,94)
4,83
(0,19)
25,4
(1,0)
Abrazadera tipo “P”
(P1023-2)
FS100 (luces intermitentes de corriente
baja); FS491
Figura 16 Figura 17 Figura 18
Figura 19 Figura 20 Figura 21
Figura 22
Figura 25
Figura 23 Figura 24
Figura 26 Figura 27
*Si la unidad tiene clasificación nominal a 1 A, consulte la Figura 16
APÉNDICE - PLANOS DIMENSIONALES
16
©2018 Controladores y Relevadores de Protección de Littelfuse 513 www.littelfuse.com/relayscontrols
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados | Respuestas entregadas
Medidas: milímetros (in)
SC3; SC4
63,5
(2,5)
49,3
(1,94)
20,32
(0,80) 6,35
(0,25)
4,75 (0,187) DE DIÁMETRO
88,9 (3,5)
2,94 (74,7)
31
(1,22)
WVM
6,35
(0,25)
13,97
(0,55)
149,9
(5,9)
175,3
(6,9)
12,7
(0,50)
83,8
(3,3)
111,8
(4,4)
61,0
(2,4)
55,9 (2,2)
DLMU
61,3
(2,41)
110
(4,33)
50
(1,97)
75
(2,95)
FB9L; HLMU; SCR9L
6,35 (0,25)
25,4
(1,00)
25,4
(1,00)
76,7
(3,02)
25,4 51,3 (1,00) (2,02) 41,7
(1,64)
PLMU11
60,7
(2,39)
45,2
(1,78) 73,9 (2,91)
77,0 (3,03)
LLC4; LLC6; PLS
60,7
(2,39)
45,2
(1,78) 73,9 (2,91)
TCS; TCSA
50,8
(2,0)
50,8
(2,0)
44,5
(1,75)
19,05
(0,75)
6,35 (0,25) 9,14 (0,36) DE DIÁMETRO DE DIÁMETRO
Figura 28 Figura 29 Figura 30
Figura 31 Figura 32
Figura 33 Figura 34 Figura 35
Figura 36
LCS10T12
38,35
(1,51)
304,8
(12)
24,89
(0,98)
9,14 DE DIÁMETRO (0,36)
11,68
(0,46)
Figura 37 Figura 38
ECS; ECSW
88,9
(3,5)
9,14
(0,36)
4,75
(0,187)
6,35
(0,25)
74,7
(2,94)
20,3
(0,80)
44,5 (1,75)
49,3 (1,94)
63,5 (2,5)
(ECS tiene conectores de paleta y ECSW tiene tablero de terminal)
34
(1,32)
29
(1,12)
18
(0,71)
65 (2,56)
73 (2,85)
70 (2,75)
62 (2,44)
DCSA
LPM
RESISTOR LIMITADOR
DE CORRIENTE
(12 ± 1)
304.8 ± 25.4 (0,53)
13,46
(0,28)
7,11
(0,22)
5,59 24 AWG (0,25 mm2
)
UL1007 SIN
REVESTIMIENTO
DE 6,35 (0,25)
<_
APÉNDICE - PLANOS DIMENSIONALES
16
www.littelfuse.com/relayscontrols 514 ©2018 Controladores y Relevadores de Protección de Littelfuse
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados | Respuestas entregadas
CLAVE
NÚMEROS DE MODELO QUE TERMINAN EN:
NO C
W 11,176 mm (0,440") 6,350 mm (0,250")
X 91,948 mm (3,620") 88,900 mm (3,500")
Y 53,848 mm (2,120") 63,500 mm (2,500")
Z 4,826 mm (0,190") 6,350 mm (0,250")
19,05
(0,75)
31,8
(1,25)
6,35
(0,25)
6,35
(0,25)
LED 300V
50,8 (2,0)
50,8
(2,0)
TVM; TVW
LLC8
LLC2
101,6
(4,0)
12,7
(0,5) 50,8
(2,0)
4,14 (0,163)
76,2
(3,0) 11,35
(0,44)
6,35
(0,25)
91,9
(3,62)
88,9
(3,5)
53,8
(2,12)
63,5
(2,5)
4,83
(0,19)
6,35
(0,25)
LLC5
45,2
[1,78]
60,7
[2,39]
73,9 [2,91]
76,5 [3,01]
ARP
45,2
[1,78]
60,7
[2,39]
73,9 [2,91]
81,3 [3,20]
FB; SCR
44,5
(1,75)
9,1
(0,36)
88,9
(3,5)
74,7
(2,94)
4,75
(0,187)
7,1 (0,28)
49,3 (1,94) 7,1 (0,28)
63,5 (2,5)
PCR
159,51
[6,28]
137,16
[5,4]
127
[5]
61,9
[2,437]
131,75
[5,187]
159,51
[6,28] 25,4
NPT [1]
25,4
NPT [1]
Tablero en
fundición
de aluminio
Figura 39 Figura 40 Figura 41
Figura 42
Figura 43 Figura 44
Figura 46 Figura 47
38,1
(1,5)
23,88
(0,94)
25,4
(1,0)
4,83
(0,19)
12,7
(0,5)
53,3
(2,10)
23,88
(0,94)
12.7
(0.5)
14AWG
1,65 (0,065)
Abrazadera tipo “P”
(P1023-2)
38,1
(1,5)
23,88
(0,94)
25,4
(1,0)
4,83
(0,19)
12,7
(0,5)
53,3
(2,10)
23,88
(0,94)
12.7
(0.5)
14AWG
1,65 (0,065)
Abrazadera tipo “P”
(P1023-2)
MSM
Figura 45
= Nylon Standoffs
52,8
(2,08)
88,9
(3,5)
5,94
(0,234)
50,8
(2,0)
52,6
(2,07)
6,35
(0,25) 12,7
(0,50)
4,14 (0,163)
69,9
(2,75)
7,24
(0,285)
23,9
(0,94)
5,59 (0,22)
LLC1 distanciadores de nylon
Rosca de tubería universal
55,6 (2,19)
44,5 (1,75) 1,6 (0,063)
3,18 (0,125)
17,53
(0,69)
41,4
(1,63)
25,4 (1,0)
12,7 (0,5)
47,8 (1,88)
63,5
(2,5)
4,78 (0,188)
APÉNDICE - PLANOS DIMENSIONALES
16
©2018 Controladores y Relevadores de Protección de Littelfuse 515 www.littelfuse.com/relayscontrols
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados | Respuestas entregadas
Figura 48
Time Delay Relay
Seconds
1.5
1.0
0.5
00.5
2.0
2.5
3.0
2,31
1,69
3,63 MAX
2,91
1,75
2,38
Time Delay Relay
Seconds
1.5
1.0
0.5
00.5
2.0
2.5
3.0
2,31
1,69
3,63 MAX
2,91
1,75
2,38
3,63 MAX
2,91
1,75
2,38
PRS65
SIO-RTD-02-00
Mediciones: pulgadas
Figura 49 87,0 (3,43)
112,5
(4,43)
CUBIERTA DE ACCESO A
INTERRUPTOR DE DISPOSICIÓN
OJAL PARA FIJACIÓN DE CABLE
4 UBICACIONES
12,5
(0,50)
60,0
(2,36)
14,5
(0,57)
6,3
(0,25)
100,0
(3,94) (0,25)
6,3
M4 O 8-32 TAP
52,5
(2,07)
56,0
(2,20)
(NOTA 3)
NOTAS:
1. DIMENSIONES EN MILÍMETROS (PULGADAS)
2. TORNILLOS DE MONTAJE: M4 O 8-32.
3. ALTURA GENERAL CUANDO SE INSTALA
EN RIEL DIN EN 50022 35 mm X 7,5 mm
RIEL DE TOPE.
R
C D R C D R C D R C D R S
P
G
D C R D C R D C R D C - +
+
2
4
V 0
V S
H
S
H
S
H
S
H
INP 1
INP 8
INP 2
INP 7
PW R
COMM
INP 3
INP 6
INP 4
INP 5
COMM
S IO-R TD
INPUT MODULE
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
34 33 3231 30 29 28 2726 2524 23 22 21 20 19
PWR
APÉNDICE - PLANOS DIMENSIONALES
16
www.littelfuse.com/relayscontrols 516 ©2018 Controladores y Relevadores de Protección de Littelfuse
Apéndice
Planos dimensionales
PLANOS DIMENSIONALES
Medidas: milímetros (in)
Conocimientos aplicados
| Respuestas entregadas
MP8000
Figura 50
103,63 (4,08)
16,00
( 0,63)
31,75 (1,25)
121,67 (4,79)
74,42 (2,93)
78,74 (3,10)
63,50 (2,50)
103,63 (4,08)
121,67 (4,79)
74,42 (2,93)
103,63 (4,08)
16,00
( 0,63)
31,75 (1,25)
121,67 (4,79)
74,42 (2,93)
78,74 (3,10)
63,50 (2,50)
APÉNDICE - PLANOS DIMENSIONALES
16
©2018 Controladores y Relevadores de Protección de Littelfuse 517 www.littelfuse.com/relayscontrols
Índice
ÍNDICE ALFANUMÉRICO
ÍNDICE
Conocimientos aplicados | Respuestas entregadas
111-Insider-P/231-Insider-P pág. 101
201-100-SLD 136
232-Insider 104
234-P 108
235P 110
460-15-100-LLS 137
460-15-100-SLD 139
50R-400-ALT 159
601-CS-D-P1 220
777-AccuPower 123
777-P2 114
A0220 80, 473
Abrazaderas y sujetadores 486
ACBC-120 130
Accesorios 467
Accesorios eléctricos 469
Acopladores de alta tensión 472
Adaptadores de montaje en panel 483
Adaptadores de montaje y riel DIN 485
AF0100 79
AF0500 77
Apéndice – Planos dimensionales 507
Aplicaciones de los CT 502
Aplicaciones de los relevadores 494
Bloqueo contra choques eléctricos GFCI 53
Bloqueo contra choques eléctricos industrial 53
CIO-777-PR 259
CIO-DN-P/CIO-120-DN-P 257
CIO-EN 260
CIO-MB/CIO-120-MB 255
COM 4-20 261
Conectores 488
Control de alarma/Cargador de batería 21, 130
Control de nivel de líquidos 19, 129, 478
Control de proceso 453
Controles de bombas y controles de nivel de líquidos 18, 129
Controles de torres e iluminación de obstrucción 39, 41, 439
D0920 74
Descripción general 489
Detectores de filtración en sellos 18, 129
EL3100 44
EL731 48
Encuentre el producto adecuado para su aplicación 2
Equipo de prueba de relevadores pág. 472
ERD3425A 391
ESD52233 422
FB9L 461
FPS 71
FPU-32 70
FS491 450
Gabinetes y adaptadores de montaje 483
Gabinetes y cubiertas herméticos 487
GFA300 55
Glosario de términos 490
Gráfico de dimensionamiento de transformadores de corriente 482
Gráfico de resistor de neutro a tierra 61
Guía de funcionamiento del temporizador 264
Guía de selección de CT 479
Guía de selección de productos 11
HLVA6I23 241
HSPZA22SL 339
Informer 250, 475
Informer-MS 252, 475
Interruptores de circuito de fallas en conexión a tierra 53
Introducción a los relevadores de seguridad 493
ISS-100 160
ISS-101 161
LCSC10T12 185, 473
LSR-0 169
Luces intermitentes 39, 439
Luces intermitentes y controles de iluminación en torres 39, 439
Luces intermitentes, control por fotografías 41
Luces intermitentes, torres de faro 41
Medidores e indicación remota 473-474
Módulos de entrada 473
Módulos de referencia a tierra 472
Módulos y adaptadores de comunicación 253, 476
Monitoreo de conductor a tierra 13, 57
Monitoreo de corriente/Relevadores de detección de carga 24
Monitoreo de NGR 13, 61
Monitoreo e indicación remotos 245, 475
Monitores de sistemas CA/Sensores de carga 22, 167
MP8000 112
MP8100 112
MPS 98
MPS-469X 100
MPU-32 96
MPU-32-X69X 100
NGR pág. 66
NGRM-ENC 67, 487
17
www.littelfuse.com/relayscontrols 518 ©2018 Controladores y Relevadores de Protección de Littelfuse
Índice
ÍNDICE ALFANUMÉRICO
ÍNDICE
Conocimientos aplicados | Respuestas entregadas
Números de dispositivo ANSI 506
Números de dispositivo IEEE 506
Paquete de resistor de neutro a tierra 66
PC-105 133
PC-XXX-LLC-CZ/PC-XXX-LLC-GM 134
PGA-1100 81, 469
PGA-LS10 473
PGA-LS20 473
PGA-LS30 473
PGR-3100 45
PGR-3200 46
PGR-4300 45
PGR-6100 94
PGR-6101-120 95
PGR-8800 75
Planos dimensionales 507
PLMU11 229
Protección contra arco eléctrico 14, 73
Protección de bombas 16, 98
Protección de bombas y motores con función de Bluetooth® 17, 112
Protección de cables de arrastre 57
Protección de conexión a tierra 12, 43
Protección de motores y bombas 16, 93
Protección del alimentador 14, 69
Protección personal 53
PRS65 347
PTHF4900DK 418
Relevador de seguridad contra fallas de conexión a tierra
para generador 55
Relevadores de alternancia 20, 153
Resistencia de conexión a tierra 13, 61
Resistencia de conversión de conexión a tierra. 503
Relevadores de monitoreo de voltaje 22, 167
Relevadores de retardo de tiempo 26, 262
Relevadores intrínsecamente seguros/Controladores de bomba 21, 160
Relevadores de control e intercambio 15, 83
Resistores de detección de corriente 474
RS485MS-2W 254
SCR490D 458
SCR9L 463
SE-105/SE-107 58
SE-134C/SE-135 59
SE-325 62
SE-330/SE-330HV 63
SE-330AU 65
SE-601 47
SE-701 50
SE-703 pág. 51
SE-704 52
Sensores de carga 22
Serie 102A 198
Serie 201A 200
Serie 201A-AU 202
Serie 201-XXX-DPDT 204
Serie 201-XXX-SP 190
Serie 201-XXX-SP-DPDT 192
Serie 202 206
Serie 202-200-SP 194
Serie 250A 208
Serie 350 210
Serie 355 212
Serie 455 214
Serie 460 216
Serie 460-XXX-SP 196
Serie 50R 188
Serie 601 218
Serie 777 114
Serie 777/77C 118
Serie 777-KW/HP-P2 120
Serie 77C-KW/HP 125
Serie ALT 153
Serie ARP 157
Serie CP5 168
Serie CT 426
Serie DCSA (con LCSC10T12) 185
Serie DLMU 224
Serie ECS 175
Serie ECSW 178
Serie ERDI 362
Serie ERDM 275
Serie ESDR 393
Serie FA/FS 455
Serie FB 457
Serie FS100 (corriente baja) 442
Serie FS100 (potencia intermedia) 444
Serie FS200 446
Serie FS300 448
Serie FS500 451
Serie FSU1000 440
Serie HLMU 227
Serie HRDB 315
Serie HRDI 364
Serie HRDM 277
17
©2018 Controladores y Relevadores de Protección de Littelfuse 519 www.littelfuse.com/relayscontrols
Índice
ÍNDICE ALFANUMÉRICO
ÍNDICE
Conocimientos aplicados | Respuestas entregadas
Serie HRDR pág. 396
Serie HRDS 337
Serie HRV 437
Serie ISS-102 163
Serie ISS-105 165
Serie KRD3 398
Serie KRD9 388
Serie KRDB 319
Serie KRDI 366
Serie KRDM 279
Serie KRDR 400
Serie KRDS 341
Serie KRPD 424
Serie KRPS 281
Serie KSD1 284
Serie KSD2 368
Serie KSD3 402
Serie KSDB 321
Serie KSDR 404
Serie KSDS 343
Serie KSDU 286
Serie KSPD 406
Serie KSPS 288
Serie KSPU 370
Serie KVM 243
Serie LLC1 141
Serie LLC2 143
Serie LLC4 145
Serie LLC5 147
Serie LLC6 149
Serie LLC8 151
Serie LSRU 171
Serie LSRX/LSRX-C 173
Serie LSR-XXX 170
Serie MSM 291
Serie ORB 323
Serie ORM 293
Serie ORS 345
Serie PC-102 132
Serie PCR 465
Serie PHS 84
Serie PLM 231
Serie PLR 237
Serie PLS 239
Serie PRLM 295
Serie RM1000 246, 475
Serie RM2000 págs. 248, 475
Serie RS 408
Serie SB6000 53
Serie SCR 459
Serie SIR 86
Serie SLR 88
Serie T10 274
Serie TA 430
Serie TAC1 432
Serie TCS 181
Serie TCSA 183
Serie TDB/T DBH/TDBL 325
Serie TDMB 420
Serie TDR 410
Serie TDS/TDSH/TDSL 348
Serie TDU/TDUH/TDUL 299
Serie TDUB 327
Serie TDUI/TDUIH/TDUIL 374
Serie TDUS 350
Serie TH1 301
Serie THC/THS 352
Serie THD2 376
Serie THD7 378
Serie THDB 329
Serie THDS 354
Serie TL 434
Serie TRB 331
Serie TRDU 265
Serie TRM 307
Serie TRS 356
Serie TRU 268
Serie TS1 309
Serie TS2/TS6 380
Serie TSB 333
Serie TSD1 311
Serie TSD2 382
Serie TSD6 384
Serie TSD7 386
Serie TSDB 335
Serie TSDR 416
Serie TSDS 358
Serie TSS 360
Serie TVM 235
Serie TVW 233
Serie WVM 222
Series 111P/233P/233P-1.5 106
17
www.littelfuse.com/relayscontrols 520 ©2018 Controladores y Relevadores de Protección de Littelfuse
Índice
ÍNDICE ALFANUMÉRICO
ÍNDICE
Conocimientos aplicados | Respuestas entregadas
Series ALT-XXX-1-SW/ALT-XXX-3-SW pág. 155
Series ASQU/ASTU 270
Series DSQU/DSTU 272
Series HRPS/HRIS 317
Series LCS10T12/LPM 187
Series SC3/SC4 453
Series TDI/TDIH/TDIL 372
Series TDM/TDMH/TDML 297
Series TMV8000/TSU2000 305
Símbolos de funciones de temporización 264
sio-rtd-02-00 128
Sistema CA/CC conectado a tierra 48
Sistema CC sin conexión a tierra 47
Sistema no conectado a tierra 504
Sistemas CA sin conexión a tierra 43
Sistemas de conexión directa a tierra 43, 504
Sistemas de resistencia conectados a tierra 62, 504
Software 468
Software del relevador 468
Sufijos típicos 506
T2D120A15M 428
TCR9C 90
Temporizadores dedicados 28, 262
Temporizadores multifunción 262
Temporizadores multifuncionales 27
Temporizadores programables de fábrica 26
Terminaciones y adaptadores 477
THD1B410.5S 303
THD3C42A0 412
Transductores y relevadores de monitoreo de corriente 167
Transformadores de corriente 480
Transformadores de medición e instrumentación 481
TS441165 313
TSA141300 436
TSD3411S 414
TSD94110SB 390
Introducción a los relevadores de seguridad y sus
aplicaciones
Reducción de límites para protección contra fallas de
conexión a tierra
La importancia de una protección efectiva de motores
y sistemas de circuitos
Protección contra fallas de conexión a tierra con VFD
Selección de un relevador de arco eléctrico
¿Por qué los NGR requieren monitoreo?
Protección del transformador
La documentación de
Littelfuse se encuentra
disponible en App Store.
Descargue la aplicación gratuita con
catálogos y documentación de Littelfuse
para tener nuestros productos y
recursos técnicos al alcance de
su mano. Encuentre productos y
especificaciones técnicas de su
interés, rápida y fácilmente.
Informes oficiales e información
técnica
Una guía de aplicaciones técnicas extendida, documentos
técnicos y una biblioteca de información técnica disponible en
línea en Littelfuse.com/TechnicalCenter. Littelfuse puede
ayudarlo a superar los desafíos de protección de circuitos y
control de aplicaciones, y cumple con las disposiciones legales.
17
Kaunas
Amsterdam
Muzquiz
Bellingham
Matamoros
Boston
Essen Saskatoon
Piedras Negras
Seoul Tokyo
Tsukuba
Suzhou
Wuxi
Beijing
Shanghai
Kunshan
Taipei
Chu-pei
Dongguan
Shenzhen
Hong Kong
Lipa City
Singapore
São Paulo
Legnago
Bremen
Deventer
Lauf
Ozegna
Troy
Eagle Pass
Manaus
Rapid City Lake Mills
Chicago
Champaign Freemont
Recursos locales para un mercado GLOBAL
Consulte Technical Resources en
Littelfuse.com
Información técnica a su disposición con un solo clic. Los
Recursos técnicos de Littelfuse contienen hojas de datos,
manuales de productos, documentos técnicos, guías de
aplicación, demostraciones, herramientas de diseño en línea y
mucho más.
Catálogo de fusibles y portafusibles
(PF101N, Inglés)
Littelfuse ofrece un amplio portafolio de protección para
circuitos de fusibles eléctricos industriales, incluidos
productos de indicación para ahorro de tiempo para una
identificación de fusibles fundidos con lectura instantánea.
Una extensión de su equipo
Línea directa técnica (800-TEC-FUSE o 800-832-3873)
Los ingenieros de Littelfuse están a su disposición para ayudarlo a identificar problemas
potenciales y brindar recomendaciones sobre productos para resolver problemas.
Aplicaciones y soporte en el campo
Nuestros ingenieros especializados en productos y aplicaciones trabajan junto con los
clientes desde el diseño hasta la instalación para determinar la mejor solución.
Catálogo de productos solares
POWR-GARD® (PF140N, Inglés)
Los productos solares POWR-GARD están específicamente diseñados para aplicaciones fotovoltaicas
en las que cuestiones como el calor, la eficiencia,
la antigüedad y los estándares mundiales afectan
las opciones disponibles en el momento de escoger
protección de circuitos.
© 2018 Littelfuse, Inc.
FORMULARIO PF130-SP
Rev: 2-F-071118
Las especificaciones, descripciones y el material ilustrativo en este documento son precisos en el momento de la publicación, pero están sujetos a cambios sin previo aviso.
Visite littelfuse.com para obtener información técnica actualizada.
Los productos de Littelfuse se encuentran certificados de
acuerdo con diversas normativas alrededor del mundo.
Para comprobar las certificaciones del algún producto
en específico, consulte la ficha técnica del producto en la
página Littelfuse.com.
Sede mundial de Littelfuse
8755 West Higgins Road, Suite 500
Chicago, IL 60631, EE. UU.
Soporte técnico:
Tel.: +1-800-TEC-FUSE
Correo electrónico: techline@littelfuse.com
Servicio al cliente:
Tel.: +1-800-227-0029
Correo electrónico: PG_CSG@littelfuse.com
Fax: +1-847-787-5190
Littelfuse SymCom
222 Disk Drive
Rapid City, SD 57701, EE. UU.
Soporte técnico:
Tel.: +1-800-832-3873
Correo electrónico: techline@littelfuse.com
Servicio al cliente:
Tel.: +1-800-227-0029
Correo electrónico: PG_CSG@littelfuse.com
Fax: +1-605-348-5685
Littelfuse Startco
3714 Kinnear Place
Saskatoon, SK S7P 0A6
Canadá
Tel.: +1-306-373-5505
Fax: +1-306-374-2245
Correo electrónico: techline@littelfuse.com
Cláusula exonerativa de responsabilidad – La información suministrada se considera fiable y exacta. Sin embargo, los usuarios deberían evaluar la idoneidad de cada producto
seleccionado y realizar pruebas a los mismos en sus propias aplicaciones. Los productos de Littelfuse no están diseñados para ser compatibles con todo tipo de aplicaciones. Lea la
cláusula exonerativa de responsabilidad completa en www.littelfuse.com/product-disclaimer.
RESISTANCE GROUNDING/NGR MONITORING
GROUND-CONDUCTOR MONITORING
GROUND-FAULT PROTECTION
SWITCHING RELAYS & CONTROLS
FEEDER PROTECTION
ARC-FLASH PROTECTION
MOTOR & PUMP PROTECTION
PUMP CONTROLLERS
AC SYSTEM MONITORS/LOAD SENSORS
TOWER AND OBSTRUCTION LIGHTING CONTROL TIMERS FLASHERS
PROTECTION RELAYS & CONTROLS CATALOG
*Bluetooth is a trademark of its respective owner.
Over 1000 Littelfuse MotorSaver ,®
PumpSaver ,®
and SSAC parts added!
New Arc-Flash Relays
AF0500 with zone protection and AF0100 with compact, cost-effective design
AF0500
Arc-Flash Relay
AF0100
Arc-Flash Relay
MP8000
Motor Protection
Smartphone Application
MP8000
Motor Protection Relay
New Smart Motor Protection Relay MP8000
with Bluetooth*
capabilities
1
Your questions answered, any way you ask them.
Choose your preferred product-selection method from the examples below.
By Application...................................................................................................................................Pg 6
By Feature Set ..............................................................................................................................Pg 7-10
By Product Category & Common Questions: Product Selection Guide..........................Pg 11-41
By Product Category & Part Number: Table of Contents...................................................... Pg 2-5
By Keyword or Part Number: Alphanumeric Index .......................................................Pg 517-520
FEATURE PGR-8800 AF0100 AF0500
Current detection ✔
Point sensors ✔ ✔ ✔
Fiber optic sensors ✔ - ✔
Arc-Flash Protection pg 14, 73
ARP Series pg 157
ASQU / ASTU Series pg 270
Brackets & Clips pg 486
APPLICATION COMMON PROBLEMS PRODUCT PROTECTION CATEGORY (PG NO.)
GENERATORS
- Insulation breakdown due to vibration and corrosion
- Ground-fault currents often exceed short-circuit current
- Arc-flash hazard from local and paralleled generators
Ground Fault (pg 43)
Resistance Grounding (pg 61)
Arc Flash (pg 73)
TRANSFORMERS - Overloading and overvoltage Resistance Grounding (pg 61)
Feeder (pg 69)
Arc-Flash Relays
MOTOR AND PUMP PROTECTION
PGR-6100 Motor Ground-Fault & Insulation Relay.............................94
7
ARC-FLASH PROTECTION
ARC-FLASH DETECTION
Rapidly detect an arc flash to reduce damage to equipment and risk to personnel
Designed for use in
OEM equipment Sensor Health Monitoring
AF0500 SERIES
pg. 77
PGR-8800 SERIES
pg. 75
D0920
pg. 74
Overcurrent Detection
Y N
N
Designed for use in
Sensor Health Monitoring OEM equipment
Y
Select product
category STEP 1
Select the needed
features in each
category
STEP 2
Find the recommended
product for your
application
STEP 3
Littelfuse.com/relayscontrols 2 © 2022 Littelfuse, Inc.
Protection Relays & Controls
TABLE OF CONTENTS
FEEDER PROTECTION
FPU-32 Series Feeder Protection Unit .............................................. 86
FPS Series Feeder Protection System......................................... 87
ARC-FLASH PROTECTION
D0920 Arc Detection Unit................................................ 90
PGR-8800 Series Arc-Flash Relay..................................................... 91
AF0500 Series Arc-Flash Relay..................................................... 93
AF0100 Series Arc-Flash Relay..................................................... 95
A0220 Series Light Sensor.......................................................... 96
PGA-1100 Diode Logic........................................................... 97
SWITCHING RELAYS & CONTROLS
PHS Series Phase Control............................................................... 100
SIR Series Solid-State Relay - Isolated ........................................ 102
SLR Series Solid-State Relay - Non-Isolated ............................... 104
TCR9C Temperature Controller ............................................... 106
MOTOR & PUMP PROTECTION
PGR-6100 Series Motor Ground-Fault & Insulation Relay...... 110
PGR-6101-120 Motor Ground-Fault & Insulation Relay...... 111
MPU-32 Series Motor Protection Unit ................................. 112
MPS Series Motor Protection System............................ 114
MPU-32-X69X Series Motor Protection Relay Retrofit Kit ............ 116
MPS-469X Series Motor Protection Relay Retrofit Kit ............ 116
111-Insider-P /
231-Insider-P Single-Phase Pump Monitor ....................... 117
232-Insider Single-Phase Pump Monitor ....................... 120
111P / 233P /
233P-1.5 Series Single-Phase Pump Monitor ....................... 122
234-P Single-Phase Pump Monitor ...................... 124
235P Single-Phase Pump Monitor ....................... 126
MP8000 Series Bluetooth*
Current & Voltage Monitor ....... 128
777 Series 3-Phase Current & Voltage Monitor ........... 132
777 / 77C Series Single-Phase Current & Voltage Monitor... 134
777-KW/HP-P2 Series 3-Phase Current & Voltage Monitor ........... 136
777-AccuPower 3-Phase Current & Voltage Monitor ........... 139
77C-KW/HP Series Single-Phase Current & Voltage Monitor... 141
SIO-RTD-02-00 Temperature Input Monitor......................... 143
FIND THE RIGHT PRODUCT FOR
YOUR APPLICATION
Typical Product Application ................................................................... 6
Product Feature Comparison.............................................................7-10
Product Selection Guide..................................................................11-42
Alphanumeric Index....................................................................537-540
GROUND-FAULT PROTECTION
Ungrounded AC Systems
EL3100 Series Ground-Fault & Phase-Voltage Indicator.............. 44
PGR-3100 Series Ground-Fault Indication System........................... 45
PGR-3200 Series Insulation Monitor................................................ 46
Ungrounded DC System
SE-601 Series DC Ground-Fault Monitor ..................................... 47
Grounded AC/DC System
EL731 Series AC/DC Sensitive Earth-Leakage Relay................. 48
Solidly-Grounded Systems
SE-701 Series Ground-Fault Monitor........................................... 50
SE-703 Series Earth-Leakage Monitor......................................... 51
SE-704 Series Earth-leakage monitor.......................................... 52
Ground-Fault Circuit Interrupters
SB5000 Series Industrial Shock-Block.......................................... 53
SB6000 Series Industrial Shock-Block..............................................
Generator and Single-Function Protection
PGR-4300 Series Generator Ground-Fault Relay.............................. 55
GROUND-CONDUCTOR MONITORING
SE-105 / SE-107 Series Ground-Fault Ground-Check Monitor...... 60
SE-134C / SE-135 Series Ground-Fault Ground-Check Monitor...... 61
RESISTANCE GROUNDING/
NGR MONITORING
Neutral-Grounding-Resistor Sizing Chart ............................................ 62
SE-325 Series Neutral-Grounding-Resistor Monitor ................ 64
SE-330 /
SE-330HV Series Neutral-Grounding-Resistor Monitor ................ 65
SE-330AU Series Neutral-Grounding-Resistor Monitor ................ 67
NGR Series–US Neutral Grounding Resistor System.................. 68
NGR Series–Canada Neutral Grounding Resistor System.................. 77
NGRM-ENC Series Enclosed Neutral Grounding Resistor Monitor... 83
1
2
3
6
7
5
4
*Bluetooth is a trademark of its respective owner.
© 2022 Littelfuse, Inc. 3 Littelfuse.com/relayscontrols
Protection Relays & Controls
TABLE OF CONTENTS
PUMP CONTROLS/
LIQUID LEVEL CONTROLS
ACBC-120 Series Alarm Controller / Battery Charging Unit.... 146
PC-102 Series Dual Channel Switch................................. 148
PC-105 5-Channel Pump Controller ....................... 149
PC-XXX-LLC-CZ Series Liquid Level Control Relay......................... 150
PC-XXX-LLC-GM Series Liquid Level Control Relay......................... 150
201-100-SLD Single-Channel Seal-Leak Detector .......... 152
460-15-100-LLS Single-Channel Liquid Level Sensor.......... 153
460-15-100-SLD Single-Channel Seal-Leak Detector .......... 155
LLC1 Series Open Board Liquid Level Control............... 157
LLC2 Series Open Board Liquid Level Control............... 159
LLC4 Series Octal Plug-In Liquid Level Control ............ 161
LLC5 Series Liquid Level Control .................................. 163
LLC6 Series Low Level Cutoff Liquid Level Control ...... 165
LLC8 Series Low Level Cutoff Liquid Level Control ...... 167
Alternating Relays
ALT Series 8-Pin Plug-in Alternating Relays ............... 169
ALT-XXX-1-SW /
ALT-XXX-3-SW Series Alternating Relays..................................... 171
ARP Series Alternating Relays..................................... 173
50R-400-ALT Alternating Relay....................................... 175
Intrinsically Safe Relays
ISS-100 Intrinsically Safe Switch......................................... 176
ISS-101 Intrinsically Safe Switch......................................... 177
ISS-102 Series Two-Channel Intrinsically Safe Switch................... 179
ISS-105 Series Five-Channel Intrinsically Safe Switch................... 181
AC SYSTEM MONITORS/LOAD SENSORS
Current Monitoring Relays and Transducers
CP5 Series Single-Phase Current Monitor................... 184
LSR-0 Load Sensor, Low Cost Relay ................... 185
LSR-XXX Series Load Sensors............................................. 186
LSRU Series Load Sensors............................................. 187
LSRX / LSRX-C Series Load Sensors, Low Cost Relays ................ 189
ECS Series Current Sensors ........................................ 191
ECSW Series Current Sensors ........................................ 194
TCS Series Current Sensors ........................................ 197
TCSA Series Current Transducers .................................. 199
DCSA Series Current Transducers .................................. 201
LCS10T12 / LPM Series Current Indicators ..................................... 203
Voltage Monitoring Relays
50R Series Single-Phase Voltage Monitor .................. 204
201-XXX-SP Series Single-Phase Voltage/Phase Monitor....... 206
201-XXX-SP-DPDT Series Single-Phase Voltage/Phase Monitor....... 208
202-200-SP Series Single-Phase Voltage/Phase Monitor....... 210
460-XXX-SP Series Single-Phase Voltage Monitor .................. 212
102A Series 3-Phase Voltage/Phase Monitor ............... 214
201A Series 3-Phase Voltage/Phase Monitor ............... 216
201A-AU Series 3-Phase Voltage/Phase Monitor ............... 218
201-XXX-DPDT Series 3-Phase Voltage/Phase Monitor ............... 220
202 Series 3-Phase Voltage/Phase Monitor ............... 222
250A Series 3-Phase Voltage/Phase Monitor ............... 224
350 Series 3-Phase Voltage/Phase Monitor ............... 226
355 Series 3-Phase Voltage/Phase Monitor ............... 228
455 Series 3-Phase Voltage/Phase Monitor ............... 230
460 Series 3-Phase Voltage Monitor........................... 232
601 Series 3-Phase Voltage & Frequency Monitor ..... 234
601-CS-D-P1 3-Phase Power Monitor............................. 236
WVM Series ................................................................... 238
DLMU Series ................................................................... 240
HLMU Series ................................................................... 243
PLMU11 Voltage Monitor......................................... 245
PLM Series Voltage Monitor......................................... 247
TVW Series ................................................................... 249
TVM Series ................................................................... 251
PLR Series ................................................................... 253
PLS Series ................................................................... 255
HLVA6I23 Single-Phase Monitor................................ 257
KVM Series ................................................................... 259
REMOTE INDICATION & MONITORING
RM1000 Series Remote Monitor ................................................. 262
RM2000 Series Remote Monitor ................................................. 264
Informer Remote Diagnostics Tool.................................... 266
Informer-MS Remote Diagnostics Tool.................................... 268
COMMUNICATION MODULES
RS485MS-2W Communication Module.......................................... 270
CIO-MB/
CIO-120-MB Communication Module.......................................... 271
CIO-DN-P/
CIO-120-DN-P Devicenet™ Interface ............................................. 273
CIO-777-PR Profibus Interface.................................................... 275
CIO-EN Modbus-TCP and Modbus-RTU Interface............... 276
COM 4-20 Output Module for use with the 777-AccuPower... 277
8
11
9 10
Littelfuse.com/relayscontrols 4 © 2022 Littelfuse, Inc.
Protection Relays & Controls
TABLE OF CONTENTS
TIME DELAY RELAYS
Timer Function Guide ......................................................................... 280
Multifunction
TRDU Series....................................................................................... 281
TRU Series.......................................................................................... 283
ASQU / ASTU Series.......................................................................... 286
DSQU / DSTU Series.......................................................................... 288
Dedicated
On Delay
T10 Series.......................................................................................... 290
Delay-on-Make
ERDM Series...................................................................................... 291
HRDM Series...................................................................................... 293
KRDM Series...................................................................................... 295
KRPS Series........................................................................................ 297
KSD1 Series....................................................................................... 300
KSDU Series....................................................................................... 302
KSPS Series........................................................................................ 304
MSM Series....................................................................................... 307
ORM Series........................................................................................ 309
PRLM Series....................................................................................... 311
TDM /T DMH / TDML Series............................................................. 313
TDU / TDUH / TDUL Series................................................................ 315
TH1 Series.......................................................................................... 317
THD1B410.5S..................................................................................... 319
TMV8000 / TSU2000 Series.............................................................. 321
TRM Series......................................................................................... 323
TS1 Series.......................................................................................... 325
TSD1 Series........................................................................................ 327
Delay-on-Make, Normally Closed
TS441165 ........................................................................................... 329
Delay-on-Break
HRDB Series....................................................................................... 331
HRPS / HRIS Series............................................................................ 333
KRDB Series....................................................................................... 335
KSDB Series....................................................................................... 337
ORB Series......................................................................................... 339
TDB / TDBH / TDBL Series................................................................. 341
TDUB Series....................................................................................... 343
THDB Series....................................................................................... 345
TRB Series.......................................................................................... 347
TSB Series.......................................................................................... 349
TSDB Series....................................................................................... 351
Single Shot
HRDS Series....................................................................................... 353
HSPZA22SL........................................................................................ 355
KRDS Series....................................................................................... 357
KSDS Series....................................................................................... 359
ORS Series......................................................................................... 361
PRS65................................................................................................. 363
TDS / TDSH / TDSL Series................................................................. 364
TDUS Series....................................................................................... 366
THC / THS Series............................................................................... 368
THDS Series....................................................................................... 370
TRS Series.......................................................................................... 372
TSDS Series....................................................................................... 374
TSS Series.......................................................................................... 376
Interval
ERDI Series......................................................................................... 378
HRDI Series........................................................................................ 380
KRDI Series........................................................................................ 382
KSD2 Series....................................................................................... 384
KSPU Series....................................................................................... 386
TDI / TDIH / TDIL Series..................................................................... 388
TDUI / TDUIH / TDUIL Series............................................................. 390
THD2 Series....................................................................................... 392
THD7 Series....................................................................................... 394
TS2 / TS6 Series................................................................................ 396
TSD2 Series........................................................................................ 398
TSD6 Series........................................................................................ 400
TSD7 Series........................................................................................ 402
Retriggerable Single Shot
KRD9 Series....................................................................................... 404
TSD94110SB ...................................................................................... 406
Recycle
ERD3425A .......................................................................................... 407
ESDR Series....................................................................................... 409
HRDR Series....................................................................................... 412
KRD3 Series....................................................................................... 414
KRDR Series....................................................................................... 416
KSD3 Series....................................................................................... 418
KSDR Series....................................................................................... 420
KSPD Series....................................................................................... 422
RS Series............................................................................................ 424
TDR Series.......................................................................................... 426
THD3C42A0........................................................................................ 428
TSD3411S........................................................................................... 430
TSDR Series....................................................................................... 432
12
© 2022 Littelfuse, Inc. 5 Littelfuse.com/relayscontrols
Protection Relays & Controls
TABLE OF CONTENTS
Percentage
PTHF4900DK....................................................................................... 434
Dual Function
TDMB Series...................................................................................... 436
ESD52233........................................................................................... 438
KRPD Series....................................................................................... 440
HVAC
CT Series............................................................................................ 442
T2D120A15M..................................................................................... 444
TA Series............................................................................................ 446
TAC1 Series........................................................................................ 448
TL Series............................................................................................. 450
TSA141300......................................................................................... 452
Coin Vending
HRV Series......................................................................................... 453
FLASHERS & TOWER
LIGHTING CONTROLS
Flashers
FSU1000 Series ............................................................................ 456
FS100 Series Low Current Flasher ........................................... 458
FS100 Series Med Power Flasher ............................................ 460
FS200 Series ............................................................................ 462
FS300 Series ............................................................................ 464
FS491 ............................................................................ 466
FS500 Series ............................................................................ 467
SC3 / SC4 Series Sequencing Controls........................................... 469
Tower and Obstruction Lighting Controls
FA / FS Series ............................................................................ 471
FB Series Flasher & Incandescent Beacon Alarm Relay.... 473
SCR490D Obstruction Lamp Alarm Relay........................... 474
SCR Series Universal Lamp Alarm Relay.............................. 475
FB9L Universal Lamp Alarm Relay.............................. 477
SCR9L Universal Lamp Alarm Relay.............................. 479
PCR Series Photo Control...................................................... 481
ACCESSORIES
Software .......................................................................................... 484
Electrical .......................................................................................... 485
Ground Reference Modules, High-Tension Couplers,
& Relay Testers.................................................................................. 488
Remote Indication.............................................................................. 489
Communication Adapters & Modules................................................ 492
Terminations & Adapters................................................................... 493
Liquid Level Control............................................................................ 494
Current Transformers (CTs)
CT Selection Guide............................................................................. 495
Current Transformers......................................................................... 496
Instrumentation & Metering Transformers........................................ 497
Current Transformer Sizing Chart....................................................... 498
ELCT Series........................................................................................ 498
ZSCT Series........................................................................................ 501
Mounting Adapters and Enclosures
Panel-Mount Adapters....................................................................... 503
DIN Rail & Mounting Adapters.......................................................... 505
Brackets & Clips................................................................................. 506
Enclosures & Watertight Covers........................................................ 507
Sockets............................................................................................... 508
PROTECTION OVERVIEW
Glossary of Terms............................................................................... 510
Introduction........................................................................................ 513
I. Introduction to Protection Relays............................................ 513
II. Relay Application.................................................................... 514
III. CT Application ....................................................................... 522
IV. Resistance-Grounding Conversion ........................................ 523
IEEE/ANSI Device Numbers and Typical Suffixes.............................. 526
Typical Suffixes.................................................................................. 526
APPENDIX
Dimensional Drawings....................................................................... 527
ALPHANUMERIC INDEX
Alphanumeric Index........................................................................... 537
13
14
15
16
17
Littelfuse.com/relayscontrols 6 © 2022 Littelfuse, Inc.
Protection Relays & Controls
TYPICAL PRODUCT APPLICATIONS
APPLICATION COMMON PROBLEMS PRODUCT PROTECTION CATEGORY (PG NO.)
GENERATORS
- Insulation breakdown due to vibration and corrosion
- Ground-fault currents often exceed short-circuit current
- Arc-flash hazard from local and paralleled generators
Ground Fault
Resistance Grounding
Arc Flash
TRANSFORMERS - Overloading and overvoltage Resistance Grounding
Feeder
SWITCHGEAR & MCCs
- Highest average downtime (IEEE 493-1997)
- Arc-flash risk to personnel maintaining and working on
live equipment
- A fault on one load or feeder trips the entire lineup
Ground Fault
Resistance Grounding
Motor
Feeder
Arc Flash
Pump Control
SWITCHBOARDS &
PANELBOARDS - Low-level leakage current undetected by typical OCPDs Ground Fault
DRIVES
- Switching frequencies cause nuisance tripping
- Resistance grounded drives require sensitive, wide-frequency
ground-fault protection
Ground Fault
Motor
Arc Flash
MOTORS & PUMPS
- Winding faults due to overloading, water, dust and vibration
- Pump damage due to dry running, deadheading, rapid cycling,
seal failure (submersible pumps), over heating, plugged intake,
jammed impeller, or voltage fault conditions.
Ground Fault
Motor
Voltage Monitoring
Pump Control
FEEDER CIRCUITS
- Temperature and mechanical stress lead to severe damage
- Older electromechanical protection is difficult to maintain
- Uncoordinated feeders causing unnecessary downtime
Ground Fault
Feeder
PORTABLE EQUIPMENT
- Movement causing broken conductors and failed insulation
- Requirement to keep low ground-fault potential
- Loss of ground or high ground resistance due to cable faults
Ground Fault
Feeder
Arc Flash
Ground-Conductor Monitoring
Resistance Grounding/NGR Monitoring
GROUNDING RESISTORS - Open-circuit resistors due to corrosion or loose connections Resistance Grounding
WATER/WASTEWATER
- Electrocution hazard due to personnel working on submersible
pumps or in vicinity of water and electricity
- Pump damage due to dry running, deadheading, rapid cycling,
seal failure (submersible pumps), over heating, plugged intake,
jammed impeller, or voltage fault conditions.
- Higher risk of arc flash and steam blast due to moisture
- Electrical conductors can cause explosions in explosive
methane atmosphere
- H2S causing premature electronics failure
Ground Fault
Motor
Arc Flash
Pump Control
Time Delay
Resistance Grounding
HVACR
- Voltage issues causing premature failure
- Short cycling increasing wear and tear on compressors
- Worn contactor causing voltage fault on compressor motor
- Rapid cycling
- Low voltage/brownout condition
- Contactor chatter
- Reverse phase in a 3-phase system
- Overload
Motor
Time Delay
© 2022 Littelfuse, Inc. 7 Littelfuse.com/relayscontrols
Protection Relays & Controls
FEATURE COMPARISONS
Use the feature tables below and the Product Selection Guide on pages 11-41 to choose the appropriate protection relay or monitor for your application.
FEATURE SE-601 EL731 PGR-3100 PGR-3200 SE-502
SE-701
SE-703
SE-704
SE-105
SE-107
SE-134C
SE-135 SE-325
SE-330
SE-330HV
SE-330AU
Detects GF via Voltage ✔ ✔ ✔ ✔ ✔
Detects GF via Current ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Detects DC GF ✔ ✔
Adjustable GF Pickup ✔ ✔ ✔ ✔ ✔ ✔ ✔
Adjustable Time Delay ✔ ✔ ✔ ✔ ✔ ✔ ✔
Remote Reset ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Analog Output ✔ ✔ ✔ ✔ ✔
Fail-Safe Option ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
Harmonic Filtering ✔ ✔ ✔ ✔ ✔ ✔ ✔
CT-Loop Monitoring ✔ ✔ ✔
Insulation Monitoring ✔
Ground-Check Monitoring ✔ ✔
Grounding-Resistor Monitoring ✔ ✔
PTC/RTD Overtemperature ✔
Communications ✔ ✔
Conformal Coating ‡ ✔ ✔ ‡ ‡ ‡ ✔ ✔ ✔ ✔
Ground-Fault Protection Relays
Arc-Flash Relays
FEATURE PGR-8800 AF0100 AF0500
Current Detection ✔
Point Sensors ✔ ✔ ✔
Fiber Optic Sensors ✔ - ✔
Cable Monitoring on Sensor Inputs ✔ ✔ ✔
USB ✔ ✔ ✔
DC Supply ✔ ✔ ✔
AC Supply ✔ ✔ ✔
Data Logging ✔ ✔
Multi-Zone ✔
Communications ✔ ✔
NOTE: Tables are for reference only and include standard and optional configurations.
Please see the respective catalog page for exact product specifications.
‡ Optional
Littelfuse.com/relayscontrols 8 © 2022 Littelfuse, Inc.
Protection Relays & Controls
FEATURE COMPARISONS
Pump Controllers
FUNCTION MP8000 777-KW 77C-KW MPU-32 MPS
Supply Voltage Single-Phase or 3-Phase
90–690 VAC
3-Phase
200-480 VAC*
Single-Phase
100-240 VAC* 65-265 VAC, 80-275 VDC
Monitored Current 0.5-1,000A
(>100A w/external CTs) 2-800A (>90 A w/external CTs)* Accepts broad range of external CTs
HP Rating Any 871 Any
Control Box Compatibility - - - - -
Overload ✔ ✔ ✔
Underload/Dry-well/Dead-head ✔ ✔ ✔ ✔
Undercurrent/Dry-well/Dead-head ✔ ✔ ✔
Overcurrent/Jam ✔ ✔ ✔ ✔ ✔
Reduced Overcurrent Mode ✔ ✔
Current Unbalance,
Phase Loss/ Reversal ✔ ✔ ✔ ✔
Over/Undervoltage ✔ ✔ ✔ ✔
Voltage Unbalance ✔ ✔ ✔
Ground Fault Calculated Calculated Calculated ✔ ✔
Overtemperature ✔ ✔
Dynamic Thermal Model ✔ ✔
Over/Underfrequency ✔ ✔
Failure to Accelerate/Underspeed ✔ ✔
Power Factor ✔
Rapid Cycling/Jog ✔ ✔ ✔ ✔ ✔
Starter Control ✔
Differential ✔ ✔
Output Contact Rating 10 A at 240 VAC 10 A at 240 VAC* 8 A at 250 VAC
Internal CT’s ✔ (up to 100 A)* ✔ (up to 90 A)*
On-unit Metering 3 Digit display 4 line x 20 characters
Remote Display Via smartphone ✔ ✔ ✔ ✔
Remote Reset Button ✔ ✔ ✔ ✔
Datalogging Last 1,000 faults Last fault Last fault 100 events 64 events
Local Communications RS-485 RS-485 RS-232 RS-485
Bluetooth® Communication to
Smartphone App** ✔ NETWORK COMS. (Optional)
Modbus TCP ✔ ✔ ✔ ✔
Modbus RTU ✔ ✔ ✔ ✔ ✔
DeviceNet ✔ ✔ ✔
Profibus ✔ ✔
Ethernet/IP ✔ ✔ ✔
Allen-Bradley DF1 ✔
Analog Output ✔ ✔
Analog Input (Prog.) ✔
Digital Input (Prog.) ✔ ✔
Conformal Coating ✔ ✔
Operating Temp Degree C -40 to 70 -20 to 70 -20 to 70 -40 to 60 -40 to 60
Warranty 5 year 10 year
Certifications UL, CSA, CE UL Recognized, CSA, CE, RCM
*Other versions exist with different voltage ranges, current monitoring ranges, output contact ratings, and temperature monitoring. Consult specific series datasheets for more details.
** iPhone® and select Android™ smartphones and tablets are supported via Littelfuse app
© 2022 Littelfuse, Inc. 9 Littelfuse.com/relayscontrols
Protection Relays & Controls
FEATURE COMPARISONS
Pump Controllers
FUNCTION 111P 111-INSIDER-P,
231-INSIDER-P 232-INSIDER 233P 234-P 235P
Supply Voltage Single-Phase
115 VAC
Single-Phase
115 VAC or 230 VAC
Single-Phase
230 VAC
Single-Phase
230 VAC
Single-Phase
230 VAC
Single-Phase
230 VAC
Monitored Current - - - - - -
HP Rating 1/3 – 1hp 1/3 – 1/2hp or
1/3 – 1hp 1/3 – 1hp 1/3 – 1.5hp or
1/3 – 3hp 1/3 – 3hp 5 – 15hp
(external CT required)
Control Box Compatibility -
Franklin™, Pentek®,
CentriPro™,
Flint & Walling™,
Grundfos®
(mid-2014 or later)
Grundfos®
(prior to mid-2014) - Grundfos® -
Overload
Underload/Dry-well/Dead-head ✔ ✔ ✔ ✔ ✔ ✔
Undercurrent/Dry-well/Dead-head
Overcurrent/Jam ✔ ✔ ✔ ✔ ✔ ✔
Reduced Overcurrent Mode
Current Unbalance,
Phase Loss/ Reversal
Over/Undervoltage ✔ ✔ ✔ ✔ ✔ ✔
Voltage Unbalance
Ground Fault
Overtemperature
Dynamic Thermal Model
Over/Underfrequency
Failure to Accelerate/Underspeed
Power Factor
Rapid Cycling/Jog ✔ ✔ ✔ ✔ ✔ ✔
Starter Control
Differential
Output Contact Rating
Internal CT’s
On-unit Metering
Remote Display Remote display capability when using the Informer via IR
Remote Reset Button
Datalogging Remote display capability when using the Informer via IR
Local Communications
Bluetooth® Communication to
Smartphone App** NETWORK COMS. (Optional)
Modbus TCP
Modbus RTU
DeviceNet
Profibus
Ethernet/IP
Allen-Bradley DF1
Analog Output
Analog Input (Prog.)
Digital Input (Prog.)
Conformal Coating
Operating Temp Degree C -40 to 60 -40 to 60 -40 to 60 -40 to 60 -40 to 60 -40 to 60
Warranty 5 year
Certifications cULus cURus cCSAus, cURus cULus cULus
*Other versions exist with different voltage ranges, current monitoring ranges, output contact ratings, and temperature monitoring. Consult specific series datasheets for more details.
** iPhone® and select Android™ smartphones and tablets are supported via Littelfuse app
Littelfuse.com/relayscontrols 10 © 2022 Littelfuse, Inc.
Protection Relays & Controls
FEATURE COMPARISONS
Motor & Feeder Protection Relays
FUNCTION/FEATURE (IEEE#) MP8000 777 77C MPU-32 MPS FPU-32 FPS
Supply Voltage Single or 3-Phase
90-690 VAC
3-Phase
200-480 VAC*
Single-Phase
100-240 VAC* 65-265 VAC, 80-275 VDC
Monitored Current
0.5-1,000A
(>100A w/
external CTs)
2-800A (>90A w/external CTs)* Accepts broad range of external CTs
Overload (49, 51) ✔ ✔ ✔ ✔ ✔
Underload ✔ ✔
Overcurrent (50, 51)/Jam ✔ ✔ ✔ ✔ ✔ ✔ ✔
Reduced Overcurrent Mode ✔ ✔ ✔ ✔
Undercurrent (37) ✔ ✔ ✔ ✔ ✔
Current Unbalance,
Phase Loss/Reversal (37) ✔ ✔ ✔ ✔ ✔ ✔
Over (59)/Undervoltage (27) ✔ ✔ ✔ ✔ ✔
Voltage Unbalance (47) ✔ ✔ ✔ ✔
Ground Fault (50G/N, 51G/N) Calculated Calculated Calculated ✔ ✔ ✔ ✔
Overtemperature (49) * ✔ ✔ ✔ ✔
Dynamic Thermal Model ✔ ✔ ✔ ✔
Over/Underfrequency (81) ✔ ✔ ✔ ✔
Failure to Accelerate/Underspeed ✔ ✔
Power Factor (55) ✔ ✔
Rapid Cycling/Jog ✔ ✔ ✔ ✔ ✔
Starter Control ✔
Breaker Control ✔
Differential (87) ✔ ✔
Feeder Protection ✔ ✔
Definite-time Overcurrent ✔ ✔
Inverse-time Overcurrent ✔
Output Contact Rating 10A at 240 VAC 10A at 240 VAC* 8A at 250 VAC
Internal CT’s ✔ (up to 100 A) ✔ (up to 90 A)*
On-unit Metering 3 Digit display 4 line x 20 characters
Remote Display Via smartphone ✔ ✔ ✔ ✔ ✔ ✔
Remote Reset Button ✔ ✔ ✔ ✔ ✔ ✔
Datalogging Last 1,000 faults Last fault Last fault 100 events 64 events 100 events 64 events
Local Communications RS-485 RS-485 RS-232 RS-485 RS-232 RS-485
Bluetooth® Communication to
Smartphone App** ✔ NETWORK COMS. (Optional)
Modbus TCP ✔ ✔ ✔ ✔ ✔ ✔
Modbus RTU ✔ ✔ ✔ ✔ ✔ ✔ ✔
DeviceNet ✔ ✔ ✔ ✔ ✔
Profibus ✔ ✔ ✔
Ethernet/IP ✔ ✔ ✔ ✔ ✔
Allen-Bradley DF1 ✔ ✔
Analog Output ✔ ✔ ✔ ✔
Analog Input (Prog.) ✔ ✔
Digital Input (Prog.) ✔ ✔ ✔ ✔
Conformal Coating ✔ ✔ ✔ ✔
Operating Temp Deg C -40 to +70 -20 to +70 -20 to +70 -40 to +60 -40 to +60 -40 to +60 -40 to +60
Warranty 5 year 5 year 5 year 10 year 10 year 10 year 10 year
Certifications UL, CSA, CE UL Recognized, CSA, CE, RCM
*Other versions exist with different voltage ranges, current monitoring ranges, output contact ratings, and temperature monitoring. Consult specific series datasheets for more details.
** iPhone® and select Android™ smartphones and tablets are supported via Littelfuse app
NOTE: IEEE Device Numbers are shown in parenthesis after the applicable features.
11
Product Selection Guide
© 2022 Littelfuse, Inc. Littelfuse.com/relayscontrols
PRODUCT SELECTION GUIDE
Ground-Fault Protection....................................................................... 12
Ground-Conductor Monitoring............................................................. 13
Resistance Grounding / NGR Monitoring............................................ 13
Feeder Protection................................................................................. 14
Arc-Flash Protection............................................................................. 14
Switching Relays & Controls............................................................... 15
Motor & Pump Protection .................................................................... 16
Pump Controllers.................................................................................. 18
AC System Monitors / Load Sensors................................................... 22
Timers................................................................................................... 26
Flashers, Tower and Obstruction Lighting Control............................... 40
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
12
GROUND-FAULT PROTECTION
EL3100
SERIES
pg. 44
PGR-3100
pg. 45
SE-704
SERIES
pg. 52
SE-601
SERIES
pg. 47
PGR-3200
SERIES
pg. 46
PGR-4300
SERIES
pg. 55
SE-701
SERIES
pg. 50
SE-703
SERIES
pg. 51
SB6100
pg. 53
Connectors
Type Locate Ground
Fault & Reduce
Transient
Overvoltage
Connectors
Type
Detect & Limit
Ground Faults
Resistance Grounded Connectors Type
Output Contact
Solidly Grounded
N
Ground-Fault Protection Relays
DC AC
N
N
N
Y
3-Types
Control Logic
Detect Insulation
Breakdown
3-Types
Control Logic
Reduce Potential
for Arc Flash
3-Types
Control Logic Personnel Protection 3-Types
Control Logic Detect Ground Fault
by Phase-Voltage
Measurement
AC
Y N
N
Digital Metering & Communications Connectors Type
Detect AC/DC Ground Fault in VFDs Connectors Type
Y
Y
Convert
System to
Resistance
Grounding
Convert
System to
Resistance
Grounding
GENERATOR AS 2081:2011
WIDE RANGE 10 mA - 5A
EL731
SERIES
pg. 48
Connectors
Type Detect
Low-Level
Ground-Faults
Currents
DC + VFDs
DC - 6kHz
Y
Y
GROUNDED
Detect ground faults on a grounded system
N
UNGROUNDED
Detect ground faults on an ungrounded system
Y
Product Selection Guide
13
RESISTANCE GROUNDING/NGR MONITORING
SE-330
SERIES
pg. 63
SE-330 & SE-701
SERIES
(use in combination)
pg. 63 pg. 50
SE-325
SERIES
pg. 62
NGR
SERIES
pg. 66
RESISTANCE-GROUNDED AC
Solve problems commonly associated with ungrounded
and solidly grounded systems and monitor the
neutral-to-ground connection
Connectors Type Neutral-Grounding
Resistance (NGR)
Continuity Monitoring
Pulsing, Digital Filtering, Connectors Type
Communications, or Software
Resistance Grounding Systems & NGR Monitors
Connectors Type Implement
Resistance
Grounding
3-Types
Control Logic Identify Faulted Feeder
Y
Y
N
N
GROUND-CONDUCTOR MONITORING
SE-105, SE-107
SERIES
pg. 58
SE-134C, SE-135
SERIES
pg. 59
Ground-Conductor Monitoring Relays
3-Types
Control Logic Cable Voltage
<5kV >5kV
GROUND-FAULT & GROUND-CHECK
Ensure ground- conductor continuity for
portable equipment and submersible
pumps, and detect ground faults
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
14
FEEDER PROTECTION
FPU-32
SERIES
pg. 70
FPS
SERIES
pg. 70
ADVANCED
Monitor voltage and
current using a modular
system with integrated
protection, breaker
control, metering, and
data-logging functions
STANDARD
Protect distribution
feeders in processing,
manufacturing,
petroleum, chemical,
and wastewater
treatment facilities
Feeder Protection Relays
Connectors Type Current Protection
& Metering IEEE/IEC
Overcurrent
Current Protection, Connectors Type
Voltage Protection,
& Metering IEEE/IEC
Overcurrent
AF0500
SERIES
pg. 77
PGR-8800
SERIES
pg. 75
D0920
pg. 74
AF0100
SERIES
pg. 79
Arc-Flash Relays
ARC-FLASH PROTECTION
Overcurrent Detection
Y N
N
Y N
Designed for use in
OEM equipment Sensor Health Monitoring
Y
ARC-FLASH DETECTION
Rapidly detect an arc flash to reduce
damage to equipment and risk to personnel
Multiple Zones, Communications,
& Data Logging
Product Selection Guide
15
Solid-State Switching Relays Phase Control Switching Relays
SWITCHING RELAYS & CONTROLS
PHASE CONTROL
Designed for changing
lamp intensity, varying
the speed of a fan, or
controlling the
temperature of a heater
TEMPERATURE CONTROL
A single set point controller with
high current, solid state output
for resistive loads
SOLID-STATE RELAYS
Designed for industrial
applications requiring rugged,
reliable operation
SIR2
SERIES
pg. 86
SLR
SERIES
pg. 88
SIR1
SERIES
pg. 86
PHS
SERIES
pg. 84
Power Supply Zero Voltage
Switching for
Resistive and
Incandescent
Loads
Designed for use in
OEM equipment
Random Switching for
Inductive Loads
Designed for use in
OEM equipment
Random Switching for
Inductive Loads
Y
Y
N
N
Designed for use in
OEM equipment
Optical Isolation Between the Control
Voltage Input and the Solid-State Output
TCR9C
pg. 90
Temperature Control Relays
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
16
PGR-6100
SERIES
pg. 94
111P
pg. 106
SIO-RTD-02-00
SERIES
pg. 128
SUPPLEMENTAL PROTECTION (MOTOR)
Protection for motors against insulation
degradation, overheating, or ventilation failure
BASIC (PUMP)
Protection of single-phase pumps against dry-well,
dead-head, jammed impeller, rapid-cycling and
over/under voltage
Power Supply Ground-Fault
Protection
&
Insulation
Monitoring
Temperature
Monitoring
Using RTDs
Hand-Held
Diagnostic
Tool Helpful
for Troubleshooting
MOTOR & PUMP PROTECTION
Mounting Options Power Supply
Power Supply Voltage Power Supply Voltage
Basic Motor & Pump Protection
233P
SERIES
pg. 106
235P
pg. 110
111-
INSIDER-P
pg. 101
231-
INSIDER-P
pg. 101
232-
INSIDER
pg. 104
234-P
pg. 108
INFORMER
pg. 250
SURFACE MOUNT OPEN BOARD
115V
<3HP
230V 115V
1/3 - 1HP 1/3 - 3HP
GRUNDFOS®
>5HP
230V
Connectors
Type HP
Connectors
Type Control Box Type
Connectors Type HP
FRANKLIN™,
PENTEK®,
CENTRIPRO™
FOR ALL BASIC
SINGLE-PHASE
UNITS ON
THIS PAGE
Product Selection Guide
17
77C
SERIES
pg. 118
777-KW/
HP-P2
SERIES
pg. 120
MPU-32
SERIES
pg. 96
777-P2
SERIES
pg. 114
MP8000
SERIES
pg. 112
77CKW/HP
SERIES
pg. 125
MOTOR & PUMP PROTECTION
STANDARD WITH BLUETOOTH®
Multi-function protection for single-phase
and three-phase low and medium voltage
motors and pumps with real-time data,
programming and troubleshooting via
iPhone® or Android™ app
STANDARD
Multi-function protection for low
and medium voltage motors
Connectors
Type Three-Phase
Connectors
Type Single-Phase
Power Supply Under Power Protection for Pump Applications Under Power Protection Power Supply for Pump Applications
Connectors Type Temperature Protection
& Reduced Overcurrent
Connectors Type 4-20mA
Output Power
N Y N
N
Y
Y Y N
Standard Motor & Pump Protection Standard Motor & Pump Protection with Bluetooth*
777-ACCUPOWER
& COM 4-20
(use in combination)
pg. 123 pg. 261
Standard Motor & Pump Protection
*Bluetooth is a trademark of its respective owner
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
18
SINGLE-CHANNEL DUAL-CHANNEL
Y N 8-PIN SOCKET
DIN RAIL
Designed for use in
OEM equipment Mounting Option 3-Types
Control Logic
Seal Leak &
Over Temperature
Dual
Seal
Leak
PUMP CONTROLLERS
201-100-SLD
pg. 136
PC-102CICILT
pg. 132
PC-102CICIDL
pg. 132
460-15-
100-SLD
pg. 139
Seal Leak Detection
Designed for use in
OEM equipment Controller Functionality
MPU-32-X69X
SERIES
pg. 100
MPS-469X
SERIES
pg. 100
MPS SERIES
pg. 98
MOTOR & PUMP PROTECTION
RETROFITS
Pre-wired plug & play
replacement for obsolete
and competitors’ relays
ADVANCED
Comprehensive voltage protection
and starter control for medium
voltage motors and pumps
SEAL LEAK DETECTORS
Detect pump seal leaks & motor
overheating on submersible pumps
Advanced Motor & Pump Protection Retrofits
Product Selection Guide
19
PC-XXXLLC-GM
SERIES
pg. 134
LLC6
SERIES
pg. 149
LLC4
SERIES
pg. 145
LLC5
SERIES
pg. 147
LLC2
SERIES
pg. 143
PC-XXXLLC-CZ
SERIES
pg. 134
460-15-
100-LLS
pg. 137
LLC1
SERIES
pg. 141
LLC8
SERIES
pg. 151
LIQUID LEVEL CONTROLS
Control liquid pumping operations in a pump-up or pump-down application
N
Power Supply
Probe Style Power Supply Compatibility Power Supply Probe Style
PUMP CONTROLLERS
Power Supply
Mounting Option
Y
GEM’S SERIES 16M
LIQUID LEVEL CONTROL
CROUZET’S PNR &
PNRU SERIES LIQUID
LEVEL CONTROL
Low Liquid
Level Cut-off
Protection That
Meets UL 353
Low Liquid
Level Cut-off
Protection That
Meets UL 353
8-PIN SOCKET
8-PIN SOCKET 11-PIN SOCKET
DIN RAIL/
SURFACE MOUNT
OPEN BOARD
PROBE
SINGLE PROBE DUAL PROBE
DUAL PROBE
SINGLE PROBE
Liquid Level Controls
Power Supply
Sensing Type
PC-105
pg. 133
FLOAT
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
20
SINGLE
Y
Y Y Y
Y Y Y
Y Y
N N N
N
N N
N
N N
11-PIN, DPDT 11-PIN, DPDT
Power Supply
Float Switch Configuration
Mode Selector Switch
3-Types
Mode Selector Switch Control Logic
3-Types
Control Logic Mode Selector
Switch
Connectors
Type
600VAC Rated
Contacts
ARPX1S
SERIES
pg. 157
ARPX2S
SERIES
pg. 157
ARPX3S
SERIES
pg. 157
ARP41
pg. 157
ARP43
pg. 157
ALT-XXX3-SW
SERIES
pg. 155
50R-400-
ALT
pg. 159
ALTXXXS-SW
SERIES
pg. 133
ALTXXX-S
SERIES
pg. 133
ALTXXXX-SW
SERIES
pg. 133
ALT-XXX1-SW
SERIES
pg. 155
ALTXXX-X
SERIES
pg. 133
DUAL
Alternating Relays
Connectors
Type Debounce
Delay
Connectors
Type Debounce
Delay
Debounce
Delay
Connectors Type Debounce Delay Connectors Type Debounce Delay
Connectors
8-Pin, SPDT Type
Connectors
8-Pin, SPDT Type
ALTERNATING RELAYS
Used in duplex pumping applications to balance the run time of both pumps
PUMP CONTROLLERS
DUAL PLUS
STOP FLOAT
Y Y
Product Selection Guide
21
ACBC-120
-SD
pg. 130
ACBC-120
pg. 130
ISS-100
pg. 160
ISS-105-
ISO
pg. 165
ISS-105-
ISO-4
pg. 165
ISS-105-
ISO-3
pg. 165
ISS-105
pg. 165
ISS-102
SERIES
pg. 163
ISS-101
pg. 161
Power Supply Mounting Option
Power Supply Number of Channels
SINGLECHANNEL
TWO
CHANNELS
THREE
CHANNELS
FOUR
CHANNELS
FIVE
CHANNELS
8-PIN SOCKET
DIN RAIL/
SURFACE MOUNT
Intrinsically Safe Relays Intrinsically Safe Pump Controller
ALARM CONTROLS/
BATTERY CHARGERS
Dual-purpose alarm control/battery
charger for pump control panels
INTRINSICALLY SAFE
RELAYS
Used to interface between
hazardous and non-hazardous areas
INTRINSICALLY SAFE
PUMP CONTROLLER
Programmable to control/equalize
run time of 2, 3, or 4 pumps, with
the ability to interface between
hazardous and non-hazardous areas
Alarm Control/Battery Charger
PUMP CONTROLLERS
Power Supply 12-Pin Socket Included
Y N
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
22
202-RP
pg. 206
201A-AU
SERIES
pg. 202
PLMU11
pg. 229
201A
SERIES
pg. 200
460
SERIES
pg. 216
PLM
SERIES
pg. 231
PLS
SERIES
pg. 239
PLR
SERIES
pg. 237
DLMU
SERIES
pg. 224
SURFACE MOUNT
DIN RAIL/SURFACE MOUNT
VOLTAGE MONITORS (1 of 2)
Highly accurate and precise voltage measurements to provide high sensitivity while minimizing nuisance tripping
Y N
Power Supply
Mounting Options
Designed for use in Reverse Phase Only
Designed for use in
OEM equipment Adjustable % Voltage Unbalance
AC SYSTEM MONITORS/LOAD SENSORS
Power Supply Three-Phase
201-XXXDPDT
SERIES
pg. 204
11-PIN SOCKET
Voltage Monitoring Relays
Y
Power Supply Unbalanced Voltage Protection
N
N
Designed for use in
OEM equipment Reverse Phase Only
Y
2-8% RANGE
2-10% RANGE
8-PIN SOCKET
N
Designed for use in
OEM equipment Adjustable Trip Delay &
Adjustable Unbalance
Y
Connectors
Type Contactor
Failure
Protection
with/without
Hand-held
Diagnostic
Tool
455 SERIES &
INFORMER-MS
(use in combination)
pg. 214 pg. 250
Y
Y N
Product Selection Guide
23
250A
SERIES
pg. 208
601
SERIES
pg. 218
HLMU
SERIES
pg. 227
WVM
SERIES
pg. 222
350
SERIES
pg. 210
202
pg. 206
TVM
SERIES
pg. 235
355
SERIES
pg. 212
102A
SERIES
pg. 198
TVW
SERIES
pg. 233
Y
Y
Y N N
N
VOLTAGE MONITORS (1 of 2)
(Continued from previous page)
AC SYSTEM MONITORS/LOAD SENSORS
Voltage Monitoring Relays
Y
Y
N N
N
FORM C
SCREW TERMINAL
Connectors Type Output Contacts
Power Supply Adjustable
Trip Delays
Power Supply Adjustable
Voltage Range
Power Supply N 600V Rated
Designed for use in
OEM equipment Adjustable %
Unbalance
Designed for use in
OEM equipment Frequency
Monitoring
2 FORM C
Designed for use in
OEM equipment Fault Memory
Designed for use in
OEM equipment
Universal
190-480 VAC
FORM C FAST-ONS
Y
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
24
Current Monitoring/Load Sensing Relays
AC SYSTEM MONITORS/LOAD SENSORS
201-XXXSP-DPDT
SERIES
pg. 192
201-
XXX-SP
SERIES
pg. 190
50R
SERIES
pg. 188
HLVA6I23
pg. 241
202-200-
SP
pg. 194
KVM
SERIES
pg. 243
460-XXXSP SERIES
pg. 196
VOLTAGE MONITORS (2 of 2)
(Continued from previous page)
Y
Y
Y
Y Y
N
N N
N
Y N
Designed for use in
OEM equipment Screw Terminals
Designed for use in
OEM equipment Adjustable Restart Delay
Designed for use in
OEM equipment Power Relay Output
2 Isolated Form C Contacts Connectors Type
Power Supply Single-Phase
SURFACE MOUNT 8-PIN SOCKET
Voltage Monitoring Relays
DIN RAIL/
SURFACE MOUNT
CURRENT MONITORS/LOAD SENSORS (1 of 2)
Multi-purpose controls used for pump and motor protection,
to provide closed-loop feedback in a system, as a proof
relay to indicate a load is energized, and more...
Power Supply Self Powered
LSRX
pg. 173
LSR-0
pg. 169
LSRX-C
SERIES
pg. 173
Mounting Options Power Supply Power Supply Relay Output
Y Y N
N
SPDT Form C
Depluggable
Terminal Block
Y N
SPST FORM A
0.25” QUICK
CONNECTS
Product Selection Guide
25
AC SYSTEM MONITORS/LOAD SENSORS
DCSA
SERIES
pg. 185
LCS10T12 &
LPM SERIES
(LPM required)
pg. 187
TCSA
SERIES
pg. 183
TCS
SERIES
pg. 181
ONBOARD TOROID
REMOTE CURRENT
SENSOR
Connectors Type AC Current Transducer
(4-20mA output)
ECSW
SERIES
pg. 178
ECS
SERIES
pg. 175
CP5
SERIES
pg. 168
Y
Y
N N
Designed for use in
OEM equipment Adjustable Trip Delay Designed for use in
OEM equipment Screw Terminal Block
Designed for use in
OEM equipment Screw Terminals
CONTROL VOLTAGE
Y
Y N
CURRENT MONITORS/LOAD SENSORS (2 of 2)
(Continued from previous page)
Y
Y
Designed for use in
OEM equipment Loop Powered
Connectors Type Single Trip Point
LSRU
SERIES
pg. 171
LSR-XXX
SERIES
pg. 170
N
1 Amp
Solid-State Output
Y N
N
N
0.25” QUICK
CONNECTS
LED CURRENT
INDICATOR
Current Monitoring/Load Sensing Relays
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
26
TIMERS
HRPSD12HI
pg. 317
HRIS
SERIES
pg. 317
KRPD
SERIES
pg. 424
KRPS
SERIES
pg. 281
KSPD
SERIES
pg. 406
KSPS
SERIES
pg. 288
HSPZA22SL
pg. 339
KSPU
SERIES
pg. 370
FACTORY PROGRAMMABLE
Microprocessor based circuitry provides excellent repeat accuracy and stability
1 of 12 DUAL
FUNCTIONS
1 of 12 SINGLE
FUNCTIONS
High Power Relay Output Power Supply Solid-State Output Power Supply
Designed for use in
OEM equipment Dual Function
Y Power Supply Relay Output
Y
Y
N
N
N
Factory Programmable Timers
Power Supply
Single Function Power Supply
Single Function Power Supply DIP Switch
Adjustment
Power Supply DIP Switch
Adjustment
Connectors Type Isolated Contacts Power Supply Dual Function
Y N Y N
Y
Y
N
N
Product Selection Guide
27
TIMERS
TRDU
SERIES
pg. 265
TRU
SERIES
pg. 268
DSQU
SERIES
pg. 272
DSTU
SERIES
pg. 272
ASTU
SERIES
pg. 270
ASQU
SERIES
pg. 270
MULTIFUNCTION
Universal and fully programmable timing relays
QUICK
CONNECTS
QUICK
CONNECTS
SCREW TERMINAL
BLOCKS
ON-BOARD KNOB DIP SWITCH
Power Supply Timing Functions Available Solid-State Output Power Supply
Power Supply Termination Style Power Supply Termination Style
Designed for use in
OEM equipment Timing Adjustment
Power Supply Relay Output Y N
Multifunction Timers
6
21
SCREW TERMINAL
BLOCKS
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
28
HRDM
SERIES
pg. 277
TRM
SERIES
pg. 307
T10
pg. 274
KRDM
SERIES
pg. 279
ERDM
SERIES
pg. 275
TDML
SERIES
pg. 297
PRLM
SERIES
pg. 295
ORM
SERIES
pg. 293
MSM
SERIES
pg. 291
TDMH
SERIES
pg. 297
TDM
SERIES
pg. 297
DEDICATED — SINGLE FUNCTION
Wide product offering to meet OEM and industrial requirements
Power Supply Contact Type
Power Supply 480/600V Contacts
Power Supply Timing Ranges
Power Supply Package Style
1-1023 s
in increments
of 1 s
0.1-102.3 s
in increments
of 0.1 s
Delay-on-Make Timers
DELAY-ON-MAKE
Connectors Type Relay Output
8-PIN OR 11-PIN
PLUG-IN
Power Supply Isolated
Y
Power Supply DIP Switch Adjustment
Y N
SPDT
DPDT
8-PIN PLUG-IN
Power
Supply Relay with
Isolated
DPDT or
SPDT
Power
Isolated Supply
DPDT
Relay
PC MOUNT/
STRANDED WIRE
LEADS TO
REPLACE BIMETAL
TYPE TIMERS
OPEN PC BOARD
Y N
Y N
TIMERS
10-10,230 s
in increments
of 10 s
N
SURFACE MOUNT
KNOB TIMING
ADJUSTMENT
Product Selection Guide
29
TH1
SERIES
pg. 301
THD1B410.5S
pg. 303
KSDU
SERIES
pg. 286
KSDU
SERIES
pg. 286
KSD1
SERIES
pg. 284
KSD1
SERIES
pg. 284
TSD1
SERIES
pg. 311
TSD1
SERIES
pg. 311
TS1
SERIES
pg. 309
DEDICATED — SINGLE FUNCTION
(Continued from previous page)
Power Supply Low Current (1A)
Delay-on-Make Timers
Y
Y
Solid-State with Normally Open Contacts Power Supply
Power Supply High Current
(6, 10, or 20A) N
Timing Ranges Power Supply
Timing Adjustment Style Power Supply
0.1 s – 600 m
in 4 ranges
0.1 s – 1000 m
in 6 ranges
1.5 s, 2 s,
30 s
20 s 1200 s
.25 s, 4 s, 5 s, 6 s, 10 s
15 s, 90 s, 150 s, 180 s
1.2 s
FIXED
TIMERS
Power Supply Timing Ranges
TS441165
pg. 313
Connectors Type Normally Closed
N
FIXED
(continued on next page)
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
30
DEDICATED — SINGLE FUNCTION
(Continued from previous page)
TIMERS
Delay-on-Make Timers
TDU
SERIES
pg. 299
DIP SWITCH
Timing Adjustment Style Power Supply
KNOB
Power Supply Timing Ranges Power Supply Timing Ranges
TMV8000
pg. 305
KSD1
SERIES
pg. 284
KSD1
SERIES
pg. 284
TSD1
SERIES
pg. 311
TSD1
SERIES
pg. 311
0.1 s – 1000 m
in 6 ranges
0.1 s – 100 h
in 7 ranges
0.1 – 8 m range
5 – 480 s
in 4 ranges
0.1 s – 100 h
in 7 ranges
0.05 s – 120 s
in 4 ranges
TSU2000
pg. 305
TS1
SERIES
pg. 309
EXTERNAL
(continued from previous page)
0.1 s – 1000 m
in 3 ranges
Product Selection Guide
31
ORB
SERIES
pg. 323
KRDB
SERIES
pg. 319
HRDB
SERIES
pg. 315
TDBL
SERIES
pg. 325
TRB
SERIES
pg. 331
TDBH
SERIES
pg. 325
TDB
SERIES
pg. 325
DEDICATED — SINGLE FUNCTION
Wide product offering to meet OEM and industrial requirements
Timing Ranges Power Supply
Power Supply Timing Ranges
Package Style Power Supply
Delay-on-Break Timers
DELAY-ON-BREAK
Connectors Type Relay Output
8-PIN OR 11-PIN
PLUG-IN
Power
Supply Isolated
Power
Supply Isolated
Y
DIP Switch Adjustment Power Supply
Y N
Power Supply
Solid-State with
Normally
Open Contacts
N
SPDT/DPDT
SPDT
0.1 s to 1000 m
in 6 ranges
0.1 s to 100 m
in 5 ranges
1-1023 s
in increments
of 1 s
0.1-102.3 s
in increments
of 0.1 s
10-10,230 s
in increments
of 10 s
OPEN PC BOARD SURFACE MOUNT
KNOB
ADJUSTMENT
TIMERS
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
32
Y N
THDB
SERIES
pg. 329
THD7
SERIES
pg. 378
TSB
SERIES
pg. 333
TSDB
SERIES
pg. 335
TSD7
SERIES
pg. 386
KSDB
SERIES
pg. 321
TDUB
SERIES
pg. 327
DEDICATED — SINGLE FUNCTION
(Continued from previous page)
DIP SWITCH
Power Supply Adjustment Style Power Supply Adjustment Style
Power Supply Low Current (1A)
Delay-on-Break Timers
Extended Operating Temperature Range Power Supply Power Supply High Current
(6, 10, or 20A) N
Y
FIXED/EXTERNAL
1 s to 1000 m
in 5 ranges
Timing Ranges Power Supply
FIXED/ONBOARD
KNOB/EXTERNAL
FIXED/ONBOARD
KNOB/EXTERNAL
TIMERS
0.1 s – 1000 m
in 6 ranges
0.05 s – 600 s
in 4 ranges
Product Selection Guide
33
TSD94110SB
pg. 390
KRDS
SERIES
pg. 341
ORS
SERIES
pg. 345
ERDI
SERIES
pg. 362
KRD9
SERIES
pg. 388
TDSL
SERIES
pg. 348
TRS
SERIES
pg. 356
PRS65
pg. 347
TDSH
SERIES
pg. 348
HRDS
SERIES
pg. 337
TDS
SERIES
pg. 348
DEDICATED — SINGLE FUNCTION
Wide product offering to meet OEM and industrial requirements
Timing Ranges Power Supply
Power Supply Timing Ranges
Power Supply Package Style
Single Shot Timers
SINGLE SHOT
Connectors Type Retriggerable
8-PIN OR 11-PIN
PLUG-IN
Power Supply Relay Output
Y
Y
0.1 s to 1000 m
in 6 ranges
Power Supply Isolated
DIP Switch Adjustment Power Supply
Y
Y
N
Power Supply Relay Output
N
Y
N N
N
TIMERS
1-1023 s
in increments
of 1 s
0.1-102.3 s
in increments
of 0.1 s
10-10,230 s
in increments
of 10 s
DPDT SPDT
Y
Power
Supply Isolated
OPEN PC BOARD SURFACE MOUNT
Power Supply Fixed/Knob/
External Adjustment
N
Knob Adjust Only Power Supply
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
34
THDS
SERIES
pg. 354
THC421C
pg. 352
TSDS
SERIES
pg. 358
THS
SERIES
pg. 352
KSDS
SERIES
pg. 343
TSS
SERIES
pg. 360
TDUS
SERIES
pg. 350
DEDICATED — SINGLE FUNCTION
(Continued from previous page)
DIP SWITCH
Timing Ranges Power Supply
Power Supply Timing Ranges
Power Supply Adjustment Style Power Supply Low Current (1A)
Coin Vending Applications Power Supply
Single Shot Timers
FIXED/ONBOARD
KNOB/EXTERNAL
0.05 s – 600 s
in 4 ranges
0.1 s – 1000 m
in 6 ranges
0.1 s – 1000 m
in 6 ranges
0.1 s – 600 s
in 4 ranges
Y
Y N
Power Supply Solid-State with
Normally Open Contacts
Power Supply Extended Operating
Temperature Range Power Supply Extended Operating
Temperature Range
High Current (6, 10, or 20A) Power Supply
N
Y N
TIMERS
Product Selection Guide
35
THD7
SERIES
pg. 378
HRDI
SERIES
pg. 364
KRDI
SERIES
pg. 366
THD2
SERIES
pg. 376
TDIL
SERIES
pg. 372
ERDI
SERIES
pg. 362
TDIH
SERIES
pg. 372
TDI
SERIES
pg. 372
DEDICATED — SINGLE FUNCTION
Wide product offering to meet OEM and industrial requirements
Timing Ranges Power Supply
Power Supply Package Style
1-1023 s in
increments of 1 s
0.1-102.3 s in
increments of 0.1 s
10-10,230 s in
increments of 10 s
Interval Timers
INTERVAL
Connectors Type Relay Output
8-PIN PLUG-IN
SURFACE MOUNT
Power Supply Isolated
Y
Y
N Y
N
Power Supply Solid-State Output
Power Supply High Current
(6, 10, or 20A)
0.1 s to 1000 m
in 6 ranges
1 s to 1000 m
in 5 ranges
TIMERS
Timing Ranges Power Supply
N
DPDT SPDT
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
36
TDUI
SERIES
pg. 374
TS2
SERIES
pg. 380
TSD2
SERIES
pg. 382
TS6
SERIES
pg. 380
TSD6
SERIES
pg. 384
KSD2
SERIES
pg. 368
TSD7
SERIES
pg. 386
DEDICATED — SINGLE FUNCTION
(Continued from previous page)
DIP SWITCH FIXED/EXTERNAL
Power Supply Adjustment Style Power Supply Low Current (1A)
Timing Ranges Power Supply
DC
Interval Timers
FIXED/ ONBOARD
KNOB/EXTERNAL
1 s to 1000 m
in 5 ranges
0.05 s - 600 s
in 4 ranges
AC
Power Supply Input Voltage
0.1 s to 1000 m
in 6 ranges
AC
Power Supply Input Voltage
DC
TIMERS
0.1 s to 100 h
in 7 ranges
Product Selection Guide
37
N
KSD3
SERIES
pg. 402
THD3C42A0
pg. 412
TSD3411S
pg. 414
TDR
SERIES
pg. 410
ERD3425A
pg. 391
HRDR
SERIES
pg. 396
KRD3
SERIES
pg. 398
KRDR
SERIES
pg. 400
DEDICATED — SINGLE FUNCTION
Wide product offering to meet OEM and industrial requirements
Power Supply Relay Output
Power Supply Isolated
Contacts Type Power Supply Timing Ranges Power Supply
Power Supply Recycling
Flashers
Power Supply Low Current (1A)
Power Supply Extended Operating
Temperature Range
High Current (6, 10, or 20A) Power Supply
Power Supply Solid-State with Normally
Open Contacts
Package Style Power Supply
Y
Y
Y
0.1 s to 1000 m
in 6 ranges
FIXED
0.1 s to 1000 m
in 6 ranges
Recycling Timers
RECYCLING
8-PIN PLUG-IN
N
N Y
SPDT DPDT
Adjustment Style Power Supply
FIXED/ONBOARD
KNOB/EXTERNAL
FIXED/ ONBOARD
KNOB
TIMERS
N
SURFACE MOUNT
Y N
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
38
RS
SERIES
pg. 408
TSDR
SERIES
pg. 416
PTHF4900DK
pg. 418
ESDR
SERIES
pg. 393
KSDR
SERIES
pg. 404
DEDICATED — SINGLE FUNCTION
(Continued from previous page)
KNOB/EXTERNAL/FIXED
EXTERNAL
DIP SWITCH
Adjustment Style Power Supply
Power Supply Input Voltage
AC
AC/DC
PERCENTAGE
Recycling Timers Percentage Timers
TIMERS
Product Selection Guide
39
T2D120A15M
SERIES
pg. 428
TDMB
SERIES
pg. 420
TA
SERIES
pg. 430
ESD5
SERIES
pg. 422
CT
SERIES
pg. 426
HRV
SERIES
pg. 437
TAC1
SERIES
pg. 432
TL
SERIES
pg. 434
DEDICATED
Wide product offering to meet OEM and industrial requirements
Power Supply Power Supply Fan Delay Low Voltage
Brownout Protection
Power Supply Y Lockout Delay
Y
Y
N
N N
N
Dedicated Timers – HVAC
DUAL FUNCTION HVAC COIN VENDING
Connectors Type Anti-short Cycle with
Random Start Anti-short Cycle with Random Start Connectors Type
Dedicated Timers – Dual Function Dedicated Timers – Coin Vending
TIMERS
TSA141300
pg. 436
Y
DELAY-ON-MAKE/
INTERVAL
DELAY-ON-MAKE/
DELAY-ON-BREAK
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
40
FS126
FS127
FS146
pg. 442
FS143
FS152
FS162
pg. 444
FS224
pg. 446
SC3/SC4
SERIES
pg. 453
FSU1000
SERIES
pg. 440
FS500
SERIES
pg. 451
FS219-45
pg. 446
FS491
pg. 450
FS324
pg. 448
FS312
pg. 448
24, 120, or
230VAC 24VDC
24VDC
24 or 120VAC
LOW AMP
12VDC
12VDC
45-150 (CUSTOM)
75 (FIXED)
10-180 (CUSTOM)
90 (FIXED)
45-150 (CUSTOM)
75 (FIXED)
N
3 or 4 Channel Chaser Designed for Sequential Power Supply Circuit Flashing of Incandescent Lamp Loads
Designed for use in
OEM equipment Flashes Per Minute (FPM)
Solid-State with Power Supply
No Moving Parts Y
Y
N
10-100 ON-BOARD
ADJUSTABLE
Connectors
Type Low Leakage
for Controlling
LED or
Resistive
Loads
Connectors Type High Immunity to
Line Noise and
Transients for
Moving Vehicle
Applications
60-150 (CUSTOM)
75 (FIXED)
Flashers
FLASHERS
Designed to cycle power to lamps and LEDs to turn them on and off repeatedly
FLASHERS, TOWER & OBSTRUCTION LIGHTING CONTROL
For Controlling Inductive, Incandescent, or Resistive Loads Connectors Type
Power Supply Medium Amp
24-240VAC;
1, 6, 10 or 20 AMP
8-PIN SOCKET
Product Selection Guide
41
FLASHERS, TOWER & OBSTRUCTION LIGHTING CONTROL
FB
SERIES
pg. 457
SCR9L
pg. 463
SCR490D
pg. 458
SCR
SERIES
pg. 459
FB9L
pg. 461
Power Supply Connectors Type Used to Provide Designed to Sense the Failure of Various Kinds of Lamps
Remote Monitoring
of Steady Burning
Incandescent
Marker and
Obstruction Lighting
Connectors Type Used to Monitor
the Operation of
One Two-lamp
Incandescent
Beacon and One
Beacon Flasher
FLASHER AND
INCANDESCENT BEACON
BEACON LAMPS/
STEADY SIDE LIGHTS
FLASHING LED
BEACON LAMPS
FLASHING/STEADY
LED BEACON LAMPS/
OBSTRUCTION LAMPS
BEACON OR
OBSTRUCTION LAMP UNIVERSAL LAMP
ALARM RELAYS
Monitors any failures in flashers & incandescent beacons, obstruction and universal lamps
Alarm Relays
Select product category STEP 1 Select the needed features in each category STEP 2 Find the recommended product for your application STEP 3
42
FLASHERS, TOWER & OBSTRUCTION LIGHTING CONTROL
PCR
SERIES
pg. 465
FS
SERIES
pg. 455
FA
SERIES
pg. 455
PHOTO CONTROL
Designed to meet the demands of the most
vigorous requirement tower & obstruction
lighting control. Factory calibrated to meet
FAA and FCC specifications
FLASHER (OFF FIRST) AUXILIARY MODULES
Beacon Tower Flashers Photo Control
BEACON TOWER FLASHERS
Designed for use on communication towers, smoke stacks,
cooling towers, tall buildings, bridges, and utility towers
43
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc. Littelfuse.com/relayscontrols
GROUND-FAULT PROTECTION
Create safer working environments and reduce incidents of arc flash
without affecting the uptime of critical operations. Vital in manufacturing
and processing environments, sensitive ground-fault relays with advanced
filtering will detect breakdown in insulation resistance without nuisance
trips. Breakdown in insulation resistance can be caused by moisture,
vibration, chemicals and dust.
Ungrounded AC Systems
EL3100 Series Ground-Fault & Phase-Voltage Indicator................ 44
PGR-3100 Series Ground-Fault Indication System............................. 45
PGR-3200 Series Insulation Monitor.................................................. 46
Ungrounded DC System
SE-601 Series DC Ground-Fault Monitor ....................................... 47
AC/DC Earthed System
EL731 Series AC/DC Sensitive Earth-Leakage Relay................... 48
Solidly Grounded Systems
SE-701 Series Ground-Fault Monitor............................................. 50
SE-703 Series Earth-Leakage Monitor........................................... 51
SE-704 Series Earth-leakage monitor............................................ 52
Ground-Fault Circuit Interrupters – Personnel Protection
SB5000 Series Industrial Shock Block............................................ 53
SB6000 Series Industrial Shock Block............................................ 55
Generator and Single-Function
PGR-4300 Series Generator Ground-Fault Relay................................ 57
For More Information…
and to download our White Paper
on Ground-Fault Protection with
VFDs, visit
Littelfuse.com/TechnicalCenter
44
Protection Relays
GROUND-FAULT PROTECTION
1
Littelfuse.com/EL3100 © 2022 Littelfuse, Inc.
Ground-Fault Protection – Ungrounded AC Systems
EL3100 SERIES
Ground-Fault & Phase-Voltage Indicator
Description
The EL3100 is a self-powered ground-fault and phase-voltage
indication system for 3-phase systems. The EL3100 meets
the National Electrical Code (NEC) and the Canadian Electrical
Code (CEC) requirements for ground detectors for ungrounded
alternating-current systems. Voltage connections are provided
on the EL3100 for 208, 240, 480, and 600-V systems. Three
green LED’s on the EL3100 indicate the presence of phaseto-ground voltage and one red LED indicates a ground fault.
The EL3100 can operate stand-alone or with up to five remote
LED indicators. A solid-state relay output provides indication
of a ground fault. The output relay is closed when the 3-phase
neutral voltage shifts as the result of ground leakage.
Specifications
Input Voltage Input L: 208/240 Vac
Input H: 480/600 Vac
Dimensions H 87.0 mm (3.43”); W 112.5 mm (4.43”)
D 56.0 mm (2.2”)
Approvals CSA certified, UL Listed (E340889),
RCM (Australia)
Conformally Coated Standard feature
Warranty 5 years
Mounting DIN, Surface
ORDERING NUMBER MOUNTING
EL3100-00 DIN, Surface
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS
NEC® and CEC Code
compliant
Meets National Electrical Code (NEC®) Article
250.21 and Canadian Electrical Code Part 1, Section
10-106 (2) requirements for ungrounded systems
Low-voltage
remote LEDs
System voltage is not present at the remote
LED location
Phase-voltage
indication
Indicates the presence of voltage on both
grounded and ungrounded systems
Output relay Allows for remote ground-fault indication
Features & Benefits
(Ground-Fault &
Phase-Voltage
Indicator)
EL3100
Remote
LEDs
AH
G
AL BH BL CH CL
DN
DR
DG
DA
DB
DC
Output
Relay
A
B
C
Note: X=R for red LED and G for green LED
Y=0 for no label and 1 for a ground-fault label
Remote LEDs
High-intensity 16-mm IP67 LED lamps
available in red and green colors.
Accessories
A
A
ACCESSORIES REQUIREMENT
RK-310X-0Y Optional
Littelfuse reserves the right to make product changes, without notice. Material in this document is as accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information.
45
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc. Littelfuse.com/PGR-3100
Ground-Fault Protection – Ungrounded AC Systems
Description
The PGR-3100 indicates the presence of voltage on each
phase of a three-phase system. The LEDs on the panel
illuminate when voltage is present. When a ground-fault
occurs, the voltage on the faulted phase reduces to ground
potential, causing the LEDs for the faulted phase to dim
and the LEDs for the unfaulted phases to become brighter.
Ungrounded ac systems are required by the National
Electrical Code (NEC®) Article 250.21(B) and the Canadian
Electrical Code Part 1, Section 10-106 (2) to have ground
detectors, such as the PGR-3100, installed on the system.
External potential transformers (PTs) can be used to step
down system voltage, allowing the PGR-3100 to be applied
to any system voltage. PTs are not required for system
voltages up to 600 V ac.
Features & Benefits
FEATURES BENEFITS
NEC® and CE Code
compliant
Meets National Electrical Code (NEC) Article
250.21(B) and Canadian Electrical Code Part 1,
Section 10-106 (2) requirements for ungrounded
systems
Phase LEDs
Indicates presence of a ground fault and the
faulted phase as well as phase-to-ground voltage
on an energized bus
Redundant LEDs Redundant long-life LEDs (two per phase) to
ensure reliability
Lamp test button Verifies LEDs are operating
Specifications
Input Voltage Up to 600 V ac 50/60 Hz
Indicator Off Voltage < 30 V ac line to ground
Dimensions H 88.9 mm (3.5”);
W 108 mm (4.3”);
D 54 mm (2.1”)
Test Button Local
Approvals CSA certified, UL Listed
Conformally Coated Standard feature
Warranty 5 years
Mounting Panel
ORDERING NUMBER MOUNTING
PGR-3100 Panel mount
Ordering Information
Simplified Circuit Diagram
A
PGR-3100
UNGROUNDED
SUPPLY
B
C
A
L2
PGR-3200
L1
B
C
(Ground-Fault
Indication System) (Insulation Monitor)
Littelfuse reserves the right to make product changes, without notice. Material in this document is as accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information.
PGR-3100 SERIES
Ground-Fault Indication System
46
Protection Relays
GROUND-FAULT PROTECTION
1
Littelfuse.com/pgr-3200 © 2022 Littelfuse, Inc.
Ground-Fault Protection – Ungrounded AC System
A
L2
PGR-3200
L1
B
C
(Insulation Monitor)
Description
The PGR-3200 detects ground faults by continuously
monitoring the insulation integrity of ungrounded electrical
systems. The relay monitors the insulation for damage and
assists with predictive maintenance and troubleshooting of
developing ground faults by providing two warning and an
alarm level. The PGR-3200 operates on one- or three-phase
ungrounded systems up to 6 kV.
The PGR-3200 can also be used on a grounded system to
monitor the insulation for damage, while the power system
is de-energized. The mode-of-operation terminals (27-28) are
connected to the circuit breaker or contactor auxiliary contacts
to toggle the relay off when the contactor or breaker is closed.
Specifications
IEEE Device Numbers Undervoltage Relay (27)
Ground Detector Relay (64)
Input Voltage See ordering information
Dimensions H 75 mm (3”); W 100 mm (3.9”); D 115 mm (4.5”)
Resistance Ratings Insulation warning (30 kΩ and 50 kΩ)
Insulation alarm (10 kΩ)
Contact Operating Mode Non-fail-safe
Test Button Local
Reset Button Local and remote
Output Contacts Two Form C
Analog Output 0-1 mA
Conformally Coated Consult factory
Approvals UL Listed (E183688)
Warranty 5 years
Mounting DIN, Surface
ORDERING NUMBER CONTROL POWER
PGR-3200 240 Vac(1)
PGR-3200-120 120 Vac
Ordering Information
Simplified Circuit Diagram
Note: For optional conformal coating please consult factory. To convert to a resistance
grounded system, see neutral-grounding-resistors packages.
(1) UL Not Available
PGH Series High-Tension Coupler
A PGH Series high-tension coupler is required
for systems between 1,300 V and 6,000 V.
PGA-0510 Analog Ohm Meter
Optional PGA-0510 Analog Meter allows
for metering of insulation resistance.
FEATURES BENEFITS
NEC® and CEC
Code compliant
Meets National Electrical Code (NEC®) Article 250.21(B)
and Canadian Electrical Code Part 1, Section 10-106 (2)
requirements for ungrounded systems
Output contact
(50 kΩ)
Form C output contact for alarming when the insulation
resistance is below 50 kΩ
Output contact
(10 kΩ)
Form C output contact for tripping when the insulation
resistance is below 10 kΩ
Analog output
(0-1 mA)
Provides means for connecting to an optional meter
(PGA-0510) or control system
DIN-rail or
surface mount Flexible options for ease of installation
Features & Benefits
Accessories
A
A
ACCESSORIES REQUIREMENT
PGH Series Required >1,300 V
PGA-0510 Optional
PGR-3200 SERIES
Insulation Monitor
47
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc. Littelfuse.com/se-601
Ground-Fault Protection – Ungrounded DC System
Description
The SE-601 is a microprocessor-based ground-fault relay for
ungrounded dc systems. It provides sensitive ground-fault
protection without the problems associated with nuisance
tripping. Ground-fault current is sensed using an SE-GRM
Series Ground-Reference Module—a resistor network that
limits ground-fault current to 25 mA. The SE-601 is used
on ungrounded dc systems ranging from industrial 24-Vdc
control circuits to 1000-Vdc solar and transportation systems.
SE-601 SERIES (PGR-2601)
DC Ground-Fault Monitor
Specifications
IEEE Device Numbers DC Overcurrent Relay (76G)
Input Voltage See ordering information
Dimensions H 75 mm (3.0”); W 55 mm (2.2”); D 115 mm (4.5”)
Trip Level Settings 1-20 mA
Trip Time Settings 0.05 -2.5 s
Output Contacts Isolated Form A and Form B
Contact Operating Mode Selectable fail-safe or non-fail-safe
Test Button Local
Reset Button Local and remote
Analog Output 0-5 V
Conformally Coated Consult factory
Approvals CSA certified, UL Listed (E340889),
CE (European Union), C-Tick (Australian)
Warranty 5 years
Mounting DIN, Surface (standard)
Panel (with PMA-55 or PMA-60 adapter)
ORDERING NUMBER CONTROL POWER
SE-601-OU 120/240 Vac/Vdc
SE-601-OD 12/24 Vdc
SE-601-OT 48 Vdc
ACCESSORIES REQUIREMENT
SE-GRM SERIES Required
PGA-0500 Optional
PMA-55 Optional
PMA-60 Optional
Note: For optional conformal coating please consult factory.
Ordering Information
Simplified Circuit Diagram
SE-GRM Series Ground-Reference Module
Required accessory, used to connect the
SE-601 DC Ground-Fault Monitor to the DC bus.
PGA-0500 Analog % Current Meter
Optional panel-mounted analog meter displays
ground-fault current as a percentage of 22 mA.
FEATURES BENEFITS
Adjustable pickup
(1-20 mA)
Ten settings provide a wide range of
low-level protection
Adjustable time delay
(50 ms-2.5 s)
Adjustable trip delay allows quick protection or
delayed response
Output contacts Form A and Form B output contacts for operation of
separate annunciation and trip circuits
Analog output
(0-5 V)
Provides means for connecting to a meter
(PGA-0500) or a control system
Non-volatile trip
Memory
Retains trip state when de-energized to simplify
troubleshooting
Selectable contact
operating mode
Selectable fail-safe or non-fail-safe operating modes
allow connection to shunt or undervoltage breaker coil
Microprocessor based No calibration required saves on maintenance cost
Features & Benefits
Accessories
A
GROUND-REFERENCE
MODULE
UNGROUNDED
SUPPLY
L2
SE-601
SE-GRM SERIES
L1
+
-
(DC Ground-Fault Monitor)
A
48
Protection Relays
GROUND-FAULT PROTECTION
1
Littelfuse.com/EL731 © 2022 Littelfuse, Inc.
CT1 CT2
L2
L1
GROUNDED
AC SUPPLY
EL731 SERIES
(AC/DC Sensitive
Earth-Leakage Relay)
A
B
C
CT1
L2
L1
EL731 SERIES
(AC/DC Sensitive
Earth-Leakage Relay)
GROUNDED
DC SUPPLY
+
–
Description
The EL731 is a microprocessor-based AC/DC Sensitive
Earth-Leakage Relay that offers complete coverage for all
frequencies from 0 to 6,000 Hz. Two CTs are required for the
entire frequency range, or one CT can be used for only low- or
high-frequency detection. An RTD/PTC sensor input allows
over-temperature protection for a motor or drive. The EL731
offers metering, password-protected alarm and trip settings
and optional network communications. It is primarily used to
add low-level ground-fault protection to variable-speed drives,
and to dc circuits.
EL731 SERIES
AC/DC Sensitive Earth-Leakage Relay
ORDERING NUMBER CONTROL
POWER COMMUNICATIONS
EL731-00-X0 120/240 Vac/Vdc None
EL731-01-X0 120/240 Vac/Vdc DeviceNet™
EL731-02-X0 120/240 Vac/Vdc Profibus®
EL731-03-X0 120/240 Vac/Vdc EtherNet/IP™
EL731-04-X0 120/240 Vac/Vdc Modbus® TCP
EL731-10-X0 48 Vdc & 24 Vac None
EL731-11-X0 48 Vdc & 24 Vac DeviceNet™
EL731-12-X0 48 Vdc & 24 Vac Profibus®
EL731-13-X0 48 Vdc & 24 Vac EtherNet/IP™
EL731-14-X0 48 Vdc & 24 Vac Modbus® TCP
EL731-20-X0 24 Vdc None
EL731-21-X0 24 Vdc DeviceNet™
EL731-22-X0 24 Vdc Profibus®
EL731-23-X0 24 Vdc EtherNet/IP™
EL731-24-X0 24 Vdc Modbus® TCP
Ordering Information
Simplified Circuit Diagram
ACCESSORIES REQUIREMENT
EFCT Series CT One Required
AC700-CUA Series Com. Unit Optional
AC700-SMK Surface-Mount Kit Optional
AC700-CVR-00 Watertight Cover (IP66) for
Panel-Mount Applications Optional
PGA-0520 Analog Meter Optional
Accessories
EFCT Series Earth-Fault Current Transformer
Required zero-sequence current transformer
specifically designed for low level detection.
A
A A
A
AC Mode DC Mode
Ground-Fault Protection – AC/DC Earthed System
Note: When building a part number, replace the “X” with “1” for AS/NZS 2081:2011 Compliant product, “0” otherwise.
AC700-CUA Series Communication Adapter
Optional network-interface and firmware-upgrade
communications adapters field-install in EL731.
AC700-SMK DIN-rail & Surface-mount Adapter
EL731 plugs into adapter for back-plane mounting.
For detailed wiring diagram, see adjacent page.
49
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc. Littelfuse.com/EL731
14 L1 L2/N
GND
NC
TC
TB
TA
TC
TB
TA
TC PTC RTD
4-20mA PGA-0520
EFCT-X
EFCT-X
SUPPLY
t˚
+t˚ TB
TA
AB
AA
ANALOG
OUT
REMOTE
RESET
RTD/PTC
LINE 1 LINE 2/N OPTIONAL
NETWORK
COMM
FAULT
20-6000 HZ CT
DC-90 HZ CT
RST
GND
SH1
S12
S11
SH2
S22
S21
19
K1
22
25
K2
K3
20
16
15
18
21
23
24
26
17
2
1
5
4
3
11
10
9
8
7
6
13
12
AC/DC SENSITIVE
EARTH-LEAKAGE RELAY
EL731
+ –
Specifications
IEEE Device Numbers AC ground fault (50G/N, 51G/N),
DC ground fault (79G),
PTC overtemperature (49),
RTD temperature (38, 49)
Supply Voltage 120/240 Vac/Vdc, 24 Vdc,
48 Vdc/24 Vac
Trip Level Settings 30-5,000 mA AC and DC
Alarm Level Settings 30-5,000 mA AC and DC
Trip Delay 0.05-2 s
Output Contacts 3 Form C (programmable)
Contact Operating Mode Fail-safe & non-fail-safe
Reset Front panel and remote
Freq. Response, CT1 0-90 Hz
Freq. Response, CT2 20-6,000, 190-6,000, 20-90, 20-3,000 Hz;
selectable
Current Transformer EFCT-x series
CT Detection Open & short detection
Terminals Plug-in, wire clamping,
24 to 12 AWG (0.2-2.5 mm2
)
Communications EtherNet/IP™, DeviceNet™, Profibus®,
Modbus® TCP (optional)
Analog Output 4-20 mA (selectable 0-5 A or
0-100% trip-level setting)
Conformal Coating Standard feature
Dimensions H 48 mm (1.9”); W 96 mm (3.8”);
D 129 mm (5.0”)
Approvals UL Listed (E340889), CSA, RCM (Australia), CE
Warranty 5 years
Mounting Panel; Surface and DIN (with optional
AC700-SMK)
FEATURES BENEFITS
Adjustable pickup (30-5,000 mA) Adjustable trip setting provides a wide range of low-level protection and system coordination
Frequency range (0-90 Hz, 20-6,000 Hz) Operate in either AC or DC mode or both. Use single or combined ranges. Separate metering
32-char OLED display Earth-leakage metering, setup and programming
Local LED indication Visual Trip, Alarm, CT connection indication
CT-Loop monitoring Alarms when CT is not connected
Analog output (4-20 mA) Connect to DCS. Allows connection to an optional meter (PGA-0520) or control system
Adjustable time delay Adjustable trip delay for quick protection and system coordination
Alarm and trip settings Detect a deteriorating condition before damage occurs
Temperature-sensor input Drive or motor temperature protection
Output contacts 3 programmable: Operate 2 alarm and 1 trip circuit
Network communication Optional connection to plant network
Harmonic filtering Eliminates nuisance tripping due to harmonic noise
Microprocessor based No required calibration saves maintenance cost
Universal power supply Provides flexibility for numerous applications
Features & Benefits
Wiring Diagram
Ground-Fault Protection – AC/DC Earthed System
EL731 SERIES
AC/DC Sensitive Earth-Leakage Relay
Littelfuse reserves the right to make product changes, without notice. Material in this document is as accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information.
50
Protection Relays
GROUND-FAULT PROTECTION
1
Littelfuse.com/se-701 © 2022 Littelfuse, Inc.
Description
The SE-701 is a microprocessor-based ground-fault relay for
resistance- and solidly-grounded systems. In addition to common
systems, it is uniquely suited for use on systems with significant
harmonic content. The SE-701 can provide main-plant protection,
feeder-level protection, or individual-load protection. Proper
current transformer selection provides the desired pickup range.
The output contacts can be connected for use in protective
tripping circuits or in alarm indication circuits. The analog output
can be used with a PLC or a meter.
SE-701 SERIES (PGR-5701)
Ground-Fault Monitor
Specifications
IEEE Device Numbers Ground fault (50G/N, 51G/N)
Input Voltage See ordering information
Dimensions H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5")
Trip Level Settings 1-99% CT-Primary Rating
Trip Time Settings 0.05-2.5 s
Contact Operating Mode Selectable fail-safe or non-fail-safe
Harmonic Filtering Standard feature
Test Button Standard feature
Reset Button Standard feature
CT-Loop Monitoring Standard feature
Output Contacts Isolated Form A and Form B
Approvals CSA certified, UL Listed (E340889),
CE (European Union), C-Tick (Australian)
Analog Output 0-5 V
Conformally coated Consult factory
Warranty 5 years
Mounting DIN, Surface (standard)
Panel (with PMA-55 or PMA-60 adapter)
ORDERING NUMBER CONTROL POWER
SE-701-OU 120/240 Vac/Vdc
SE-701-OD 12/24 Vdc
SE-701-OT 48 Vdc
SE-701-O3 24 Vac
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS
Adjustable pickup
(1-99%)
Trip setting based on input CT primary, allows use
with any CT. Minimum 50 mA with EFCT Series.
Adjustable time delay
(50 ms-2.5 s)
Adjustable trip delay allows quick protection and
system coordination
Output contacts Form A and Form B ground-fault output contacts for
operation of separate annunciation and trip circuits
Analog output
(0-5 V)
Allows for connecting an optional meter (PGA-0500)
or a control system
CT-Loop monitoring Alarms when CT is not connected
Selectable DFT or peak
detection filtering Compatible with variable-speed drives
Harmonic filtering Eliminates nuisance tripping
Non-volatile trip
memory
Retains trip state while de-energized to simplify
troubleshooting
Microprocessor based No calibration required, saves on maintenance cost
Universal power supply
Allows operation in application where one side
of PT is faulted, provides flexibility for numerous
applications
Features & Benefits
Note: For optional conformal coating please consult factory.
ACCESSORIES REQUIREMENT
Current Transformer Required
PGA-0500 Optional
PMA-55, PMA-60 Optional
SE-EFVC Voltage Clamp Optional
Accessories
Ground-Fault Current Transformer
Required current transformer model depends
on application. We offer a variety of sensitive
CTs with 5- and 30-A primaries.
PGA-0500 Analog % Current Meter
Optional panel-mounted analog meter displays
ground-fault current as a percentage of the CT
primary rating.
A
B
A
B
C
L2
L1
GROUNDED
SUPPLY
SE-701 SERIES
(Ground-Fault Monitor)
CT A
Ground-Fault Protection – Solidly Grounded Systems
51
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc. Littelfuse.com/se-703
Ground-Fault Protection – Solidly Grounded Systems
SE-703 SERIES
Earth-Leakage Monitor Description
The SE-703 is a microprocessor-based earth-fault relay for resistanceand solidly earthed systems. It offers sensitive earth-fault detection as
low as 25 mA and can be used on systems with significant harmonic
content. The SE-703 provides feeder-level protection or individual-load
protection. The output contacts can be connected for use in protective
tripping circuits or in alarm indication circuits. The analog output can be
used with a PLC or a meter. The SE-703 is specifically designed to be
AS/NZS 2081 compliant to either 2011 or 2002 (see ordering options).
Specifications
IEEE Device Numbers Ground fault (50G/N, 51G/N)
Input Voltage See ordering information
Dimensions H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5")
Trip Level Settings 25-500 mA
Trip Time Settings INST-500 ms
Contact Operating Mode Fail-safe (x=0 models) or selectable (x=2 models)
Harmonic Filtering Standard feature
Test Button Standard feature
Reset Button Standard feature
CT-Loop Monitoring Standard feature
Output Contacts Two isolated Form C contacts
Approvals CSA certified, UL Listed (E340889),
CE (European Union), RCM (Australian)
Compliance AS/NZS 2081:2011 (x=0 models) or
AS/NZS 2081: 2002 (x=2 models)
Analog Output 0-5 V
Conformally coated Yes
Warranty 5 years
Mounting DIN, Surface (standard)
Panel (with PMA-55 or PMA-60 adapter)
ORDERING NUMBER CONTROL POWER
SE-703-0U-0x 120/240 Vac/Vdc
SE-703-0D-0x 12/24 Vdc
SE-703-0T-0x 48 Vdc
SE-703-03-0x 24 Vac
Note: x=0 for AS/NZS 2081:2011 compliance (fail-safe output contacts)
x=2 for AS/NZS 2081:2002 compliance (selectable fail-safe or non-fail-safe
output contacts
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS
Adjustable pickup
(25-500 mA)
Adjustable trip setting provides a wide range of lowlevel protection and system coordination
Adjustable time delay
(INST-500 ms)
Adjustable trip delay allows quick protection and
system coordination
Output contacts 2 Form C ground-fault output contacts for operation of
separate annunciation and trip circuits
Analog output
(0-5 V)
Allows for connecting an optional meter (PGA-0500)
or control system
CT-Loop monitoring Alarms when CT is not connected
Contact operating
mode
Fail-safe operating mode for undervoltage
applications, optional non-fail-safe mode available
Harmonic filtering Eliminates nuisance tripping
Non-volatile trip
memory
Retains trip state while de-energized to simplify
troubleshooting
Microprocessor based No calibration required, saves maintenance cost
Universal
power supply
Allows operation in application where one side of PT is
faulted, provides flexibility for numerous applications
Global certifications Compliant with US, Canadian, European, and Australian
standards for applications in almost any country
Features & Benefits
ACCESSORIES REQUIREMENT
EFCT Series Required
PGA-0500 Optional
PMA-55 Optional
PMA-60 Optional
SE-EFVC Voltage Clamp Optional
Accessories
EFCT Series Ground-Fault Current Transformer
Required zero-sequence current transformer
specifically designed for low-level detection.
PGA-0500 Analog % Current Meter
Optional panel-mounted analog meter displays groundfault current as a percentage of the set-point or 5 A.
PMA-60 Series – Mounting Adapter
Required when panel mounting for
AS/NZS 2081:2011 compliance
A
CT
L2
L1
GROUNDED
SUPPLY
SE-703 SERIES
(Earth-Leakage Monitor)
A
B
C
A
52
Protection Relays
GROUND-FAULT PROTECTION
1
Littelfuse.com/se-704 © 2022 Littelfuse, Inc.
Ground-Fault Protection – Solidly Grounded Systems
Description
The SE-704 is a microprocessor-based ground-fault relay for resistanceand solidly-grounded systems. It offers very sensitive ground-fault
detection as low as 10 mA and can be used on systems with
significant harmonic content. The output contacts can be connected for
use in protective tripping circuits (such as for marina or boatyard feeder
circuits) or in alarm indication circuits. The analog output can be used
with a PLC or a meter. The SE-704 can be integrated with a shunt trip
circuit breaker to meet CE code C22.1-21 Section 78-052(2) and NEC
article 555.35(A)(1), 555.35(3), and 555.53 for marina applications.
SE-704 SERIES (PGR-4704)
Earth-Leakage Monitor
Specifications
IEEE Device Numbers Ground fault (50G/N, 51G/N)
Input Voltage See ordering information
Dimensions H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5")
Trip Level Settings 10 mA–5.0 A
Trip Time Settings 30–2000 ms
Contact Operating Mode Selectable fail-safe or non-fail-safe
Harmonic Filtering Standard feature
Test Button Standard feature
Reset Button Standard feature
CT-Loop Monitoring Standard feature
Output Contacts Isolated Form A and Form B
Approvals UL Listed (E340889), CSA, CE (European Union)
RCM (Australian)
Analog Output 0–5 V & 0–1 mA
Conformally coated Optional
Warranty 5 years
Mounting DIN, Surface (standard)
Panel (with PMA-55 or PMA-60 adapter)
ORDERING NUMBER CONTROL POWER
SE-704-0U 120/240 Vac/Vdc
SE-704-0D 12/24 Vdc
SE-704-0T 48 Vdc
SE-704-03 24 Vac
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS
Adjustable pickup
(10 mA–5 A)
Adjustable trip setting provides a wide range of
low-level protection and system coordination
Adjustable time delay
(30 ms–2.0 s)
Adjustable trip delay allows quick protection and
system coordination
Output contacts Form A and Form B ground-fault output contacts for
operation of separate annunciation and trip circuits
Analog output
(0–5 V & 0–1 mA)
Allows for connecting an optional meter (PGA-0500)
or control system
CT-Loop monitoring Alarms when CT is not connected
Selectable contact
operating mode
Selectable fail-safe or non-fail-safe operating modes
allows connection to shunt or undervoltage breaker coil
Harmonic filtering Eliminates nuisance tripping
Non-volatile
trip memory
Retains trip state when de-energized to simplify
troubleshooting
Microprocessor based No calibration required saves maintenance cost
Universal
power supply
Allows operation in application where one side of PT
is faulted, provides flexibility for numerous applications
Features & Benefits
Note: For optional conformal coating please consult factory.
ACCESSORIES REQUIREMENT
SE-CS30 Series Required
PGA-0500 Optional
PMA-55, PMA-60 Optional
Accessories
ELCT30 or SE-CS30 Series Current Transformer
Required zero-sequence current transformer
specifically designed for low level detection. Flux
conditioner is included to prevent saturation.
PGA-0500 Analog % Current Meter
Optional panel-mounted analog meter displays groundfault current as a percentage of the set-point or 5 A.
A
CT
L2
L1
SE-704 SERIES
(Earth-Leakage Monitor)
A
B
C
GROUNDED
SUPPLY
A
53
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc.
Simplified Circuit Diagram
AUXILIARY
CONTACT
K
LOAD
G
TERMINATION
DEVICE
G
L1
L2
L3
SB5000
GC A
FEATURES BENEFITS
UL 943 inverse time trip curve Inverse time detection circuit protects people while also
reducing the probability of nuisance tripping
DFT (Discrete Fourier Transform)
filtering algorithm Eliminates nuisance trips due to harmonics
Minimum trip time < 20 msec Reduces the risk of ventricular fibrillation for leakage
current of 250 mA and above
Fixed 6 mA (UL 943) or 20 mA
(UL 943C) trip level
UL Listed GFCI and Special-Purpose GFCI personnel
protection for industrial and commercial loads up to 60 A
Selectable trip levels
(EGFPD)
The settings below 20 mA provide extra safety. The
settings above 20 mA can reduce nuisance tripping on
systems with high leakage current
Two-stage ground monitor with
Zener termination that meets UL
943C, CSA M421
Proactively protects from shock by tripping if continuity
of ground wire between Industrial Shock Block and load
is broken
Flexible configuration
Selectable manual reset or autoreset for brownout,
power up, and ground monitor interruptions to fit plant
safety protocols
Conformal coating Internal PWB is conformally coated to protect against
corrosion and moisture
Auxiliary contact Alerts your SCADA system if the Shock Block is
energized or tripped
Automatic self-test The Shock Block will continuously test itself and will trip
if there is an internal failure
GFCI Class A, C, D and EGFPD
options in one series
Simplified planning and operator familiarity for multiple
applications/requirements
Features & Benefits
Description
Special-Purpose Ground-Fault Circuit Interrupter
(SPGFCI), Class C and Class D
Industrial Shock Block (ISB) is a personnel protection device
designed to meet the requirements for special-purpose
GFCIs defined by UL 943C. This standard outlines GFCI
classes specifically designed for use in industrial facilities.
Class C GFCIs are intended to be used on three-phase
systems where the line-to-line voltage is 480 V or less with
a trip level of 20 mA, while Class D GFCIs are intended to be
used on 600 V systems. The Industrial Shock Block includes
DFT harmonic filtering, an automatic self-test feature and
is compliant to the UL 1998 Software in Programmable
Components standard.
Ground-Fault Circuit Interrupter (GFCI), Class A
The Shock Block is available as a 208 V Class A GFCI,
allowing commercial kitchens, construction sites, and other
non-dwelling units with wet areas to meet NEC 210.8(B) for
their three-phase loads up to 60 A.
Equipment Ground-Fault Protective Device (EGFPD)
Industrial Shock Block is also available with adjustable
protection settings as an EGFPD. The EGFPD models can be
set to trip at 6 mA or from 10–100 mA in increments of 10
mA. This offers more flexibility since GFCI devices are not
allowed to have an adjustable trip level.
Ratings and Models
Industrial Shock Block (GFCI & EGFPD) is available for threephase voltages from 208 to 600 V with a maximum full load
current of either 32 or 60 A. The power system can be either
solidly or high-resistance grounded and the load must be
three phase without a neutral.
The standard enclosure is IP 69K/NEMA 4X and outdoor
rated, suitable for all industrial environments including hightemperature washdown used in food production. A Class
II, Division 2 option is also available for applications where
explosive dust may be present (future option).
Ground Wire (Load-Ground) Monitor
The Industrial Shock Block also monitors the ground wire
(load-ground) connection between the Industrial Shock Block
and load. This is a required feature for Class C and D GFCI
devices and is recommended for Class A GFCI and EGFPD
devices. If the ground-return path is broken, the Industrial
Shock Block will trip and provide an alarm by changing the
state of the alarm contacts. This monitoring circuit includes
an extra wire (pilot wire) between the Industrial Shock
Block and load. At the load, the pilot wire is connected to a
termination device. The other end of the termination device
is connected to the load ground (typically the enclosure).
Ground-Fault Circuit Interruptors – Personnel Protection
SB5000 SERIES
54
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc.
Ground-Fault Circuit Interruptors – Personnel Protection
SB5000 SERIES
Specifications
Voltage Rating 208 V, 480 V, 600 V
Current Rating 32 or 60 A (continuous)
System Type Three-phase, 3-wire (no neutral), 60 Hz
Short-Circuit Current Rating 10,000 A extendable to 50,000 A
(see manual)
Trip Level Settings Fixed at 6 mA (Class A models)
Fixed at 20 mA (Class C/D models)
Selectable 6, 10, 20, 30, 40, 50, 60, 70,
80, 90, 100 mA (EGFPD models)
Trip Time Setting Inverse time curve according to UL 943
Ground Monitoring Circuit Selectable short or Zener termination;
Fail-safe; CSA M421 compliant
Enclosure IP 69K and NEMA 4X (Outdoor),
Polycarbonate, Lockable
Operating Temperature -35 °C (-31 °F) to 40 °C (104 °F),
up to 60 °C (151 °F) with derating
Approvals UL Listed Class A GFCI (UL 943)
UL Listed Class C, D SPGFCI (UL 943C)
cULus Listed EGFPD (UL 943/UL 1053)
UL 1998
Dimensions H 11.25" x W 9.56" x D 4.44"
Accessories
1N5339B - Termination Device
Axial-lead ground-check termination,
included with SB5000 series
SE-TA6 - Termination Assembly
Optional termination assembly with
terminals and mounting holes
SE-TA6-SM Stud-Mount
Termination Assembly
Optional ground-check termination
for submersible pumps
SE-TA6ASF-WL Series -
Termination Assembly
Compact 12 W ground-check
termination assembly
Connection Diagram
The SB5000 is installed in-line between incoming power or
existing overcurrent protection device and the load. ORDERING
NUMBER
LOAD
RATING (A)
VOLTAGE
(V)
TRIP
LEVEL (MA) UL CLASS
SB5032-00x-0
32
208
20
(Fixed)
UL 943C Class C SPGFCI
SB5032-20x-0 480
SB5032-30x-0 600 UL 943C Class D SPGFCI
SB5032-01x-0 208 6, 10–100 in
increments
of 10
(Selectable)
SB5032-21x-0 480 UL 943/UL 1053 EGFPD
SB5032-31x-0 600
SB5032-02x-0 208 6
(Fixed) UL 943 Class A GFCI
SB5060-00x-0
60
208
20
(Fixed)
UL 943C Class C SPGFCI
SB5060-20x-0 480
SB5060-30x-0 600 UL 943C Class D SPGFCI
SB5060-01x-0 208 6, 10–100 in
increments
of 10
(Selectable)
SB5060-21x-0 480 UL 943/UL 1053 EGFPD
SB5060-31x-0 600
SB5060-02x-0 208 6
(Fixed) UL 943 Class A GFCI
Note: Replace x with 1 for IP 69K/NEMA 4X Enclosure; replace with 2 to add Class II, Division 2 rating
(future option).
Ordering Information
A
Electrical
Panel
SB5060-021-0
208 V, 60 A, Class A GFCI
55
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc. Littelfuse.com/IndustrialShockBlock
Ground-Fault Circuit Interruptors – Personnel Protection
SB6000 SERIES
Simplified Circuit Diagram
AUXILIARY
CONTACT
K
LOAD
SB-OPI
(Operator
Interface)
G
TERMINATION
DEVICE
ENCLOSED SB6100 MODELS
G
L1
L2
L3
SB6100
*
GC
* For a single-phase load; Jumper L2 & L3
& use L1 & L2 as the input terminals
A
B
*Patented
Enclosed Model* Open-Chassis Model*
Operator Interface*
ORDERING
NUMBER
VOLTAGE
(V)
TRIP
LEVEL (MA) UL CATEGORY/CLASS
SB6100-00x-0 208
20
(Fixed)
UL 943C Class C
special-purpose GFCI SB6100-10x-0 240
SB6100-20x-0 480
SB6100-30x-0 600 UL 943C Class D
special-purpose GFCI
SB6100-01x-0 208
6, 10–100 in
increments
of 10
UL 943/UL 1053
Equipment ground-fault
protective device (EGFPD)
SB6100-11x-0 240
SB6100-21x-0 480
SB6100-31x-0 600
SB6100-02x-0 208 6
(Fixed) UL 943 Class A GFCI
Ordering Information
Note: x=0 for open-chassis models and 1 for enclosed models
FEATURES BENEFITS
UL 943 inverse time trip curve Detects and interrupts to protect people and reduce
the probability of nuisance tripping
Minimum trip time < 20 msec Reduces the risk of ventricular fibrillation for leakage
current of 250 mA and above
Fixed 6 mA (UL 943) or 20 mA
(UL 943C) trip level
Personnel protection for industrial and commercial
systems on loads up to 100 A
Selectable trip levels
(EGFPD)
Provides extra safety when a customer is able to
operate with a setting below 20 mA (GFCI) and the
settings above 20 mA can reduce nuisance tripping on
systems with high leakage current
UL 943C ground monitor/
interrupt
Protects from shock by tripping if continuity of ground
wire between Industrial Shock Block and load is broken
Undervoltage, brownout,
chatter detection
Ensures proper operation and prolongs the internal
contactor lifetime
3 x Class T, 600 V
incoming fuses
The fuses provide overcurrent protection for a 100 A
circuit and a higher short-circuit current rating (SCCR)
of 50 kA
Conformal coating Internal circuits are conformally coated to protect
against corrosion and moisture, yet still repairable
Operator Interface Shows unit status, alarm types, percentage of leakage
current, and allows for Test and Reset capabilities
Auxiliary Contact Provides a normally-open contact for remote indication
Automatic Self-Test All units include an automatic self-test feature include
an automatic self-test feature
Motor Starter Allows the user to start and stop the motor from the
interface
Features & Benefits
Description
Special-Purpose Ground-Fault Circuit Interrupter (GFCI),
Class C and Class D
Industrial Shock Block (ISB) is a personnel protection device designed to meet
the requirements for special-purpose GFCIs defined by UL 943C. This standard
outlines GFCI classes specifically designed for use in industrial facilities. Class
C GFCIs are intended to be used on three-phase systems where the line-toline voltage is 480 V or less with a trip level of 20 mA, while Class D GFCIs are
intended to be used on 600 V systems. The Industrial Shock Block includes
an automatic self-test feature and is compliant to the UL 1998 Software in
Programmable Components standard.
Ground-Fault Circuit Interrupter (GFCI), Class A
The Shock Block is available as a Class A GFCI, allowing commercial kitchens
and commercial establishments with wet areas to meet NEC 210.8(B) for their
3-phase loads up to 100 A.
Equipment Ground-Fault Protective Device (EGFPD)
Industrial Shock Block is also available with adjustable protection settings as
an EGFPD. The EGFPD models can be set to trip at 6 mA or from 10-100 mA
in increments of 10 mA. This offers more flexibility since GFCI devices are not
allowed to have an adjustable trip level.
Rating and Models
Industrial Shock Block (GFCI & EGFPD) is available for three-phase voltages
from 208 to 600 V with a maximum full load current of 100 A, and a built-in
overcurrent protection supplied by Littelfuse Class T fuses. The load must be
3-phase, however, cannot have a neutral. The power system can either be
solidly-grounded or high-resistance grounded.
Two options for enclosures are available: UL-recognized open-chassis models
are available for installation in existing electrical enclosures and UL-listed
enclosed models include a NEMA-4X enclosure for stand-alone installations.
Ground Wire (Load-Ground) Monitor
The Industrial Shock Block also monitors the ground wire (load-ground)
connection between the Industrial Shock Block and load. This is a required
feature for Class C and D GFCI devices and and is recommended for Class A
and EGFPD devices devices. If the connection is broken, the Industrial Shock
Block will trip and provide an alarm by changing the state of the alarm contacts.
This monitoring circuit includes an extra wire (pilot wire) between the Industrial
Shock Block and load (since the monitoring current is low, only a small wire is
required). At the load, the pilot wire is connected to a termination device. The
other end of the termination device is connected to the load ground (typically
the enclosure).
56
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc.
Operator Interface
(AC6000-OPI-00)
1N5339B - Termination Device
Axial-lead ground-check termination,
included with SB6000 series
SE-TA6 - Termination Assembly
Optional termination assembly with
terminals and mounting holes
SE-TA6-SM Stud-Mount
Termination Assembly
Optional ground-check termination
for submersible pumps
AC6000-CART-00
Two-wheeled Cart
Optional for mounting ISB to allow
for moving the unit while power is off
AC6000-MNT-00
Mounting Frame
Optional for mounting ISB to a cart or
other surface. Included with the
AC6000-CART-00.
Littelfuse.com/IndustrialShockBlock
Specifications
Voltage Rating See ordering information
Current Rating 100 A (continuous)
System Type 3-phase, 3-wire (no neutral), 60 Hz
Short-Circuit Current Rating 50,000 A
Trip Level Settings Selectable (6, 10, 20, 30, 40, 50, 60, 70, 80,
90, 100 mA), fixed at 6 mA, or fixed at 20 mA
Trip Time Setting Inverse time trip curve
Enclosure NEMA 4X, Polyester, Lockable
Operating Temperature –35 °C (–31 °F) to + 40 °C (104 °F), up to
+ 66 °C (151 °F) with derating
Wiring Requirements 2/0 AWG (maximum)
Approval GFCI: UL Listed (enclosed models) and UL
Recognized Component (open-chassis
models)
EGFPD: cULus Listed (enclosed models) and
cURus Recognized Component (open-chassis
models); UL1998 Compliant (revision 01 or
higher); All models except SB6100-02x-0
CSA Certified
Dimensions Enclosed: H 453.8 mm (17.9”);
W 406.2 mm (16.0”); D 223.3 mm (8.8”)
Open-chassis: H 455.0 mm (17.9”);
W 340.7 mm (13.4”); D 174.9 mm (6.8”)
Warranty 1 year
Accessories Connection Diagram
The SB6100 is installed in-line between incoming power or existing
overcurrent protection device and the load.
The open-chassis SB6100 can be installed in electrical equipment and
the enclosed version is typically wall-mounted.
Ground-Fault Circuit Interruptors – Personnel Protection
SB6000 SERIES
A
B
* Page in Protection Relay & Controls Catalog
ACCESSORIES REQUIREMENT PAGE*
AC6000-OPI-00 Included N/A
1N5339B Included 120
SE-TA6 Optional 120
SE-TA6-SM Optional 120
SE-TA6ASF-WL Optional 120
AC6000-CART-00 Optional N/A
AC6000-MNT-00 Optional N/A
Ordering Information - Accessories
Incoming Power
SB6100 Industrial
Shock Block
Enclosed Model
Circuit Breaker SB6100
Industrial
Shock Block
Open-Chasis
Model
Circuit Breaker
57
Protection Relays
GROUND-FAULT PROTECTION
1
© 2022 Littelfuse, Inc. Littelfuse.com/pgr-4300
Ground-Fault Protection – Generator and Single-Function
PGR-4300 SERIES (GFA300)
Generator Ground-Fault Relay
ORDERING NUMBER CONTROL POWER
PGR-4300-12 12 Vdc
PGR-4300-24 24 Vdc
PGR-4300-120 120 Vac
Description
The PGR-4300 Generator Ground-Fault Relay provides
a simple method for detecting a ground-fault condition
on generators without the need for current transformers
(CTs). This greatly simplifies the installation. In addition,
it is compatible with both three- and four-pole transfer
switches. This relay also monitors the neutral-to-ground path
for continuity. The PGR-4300 is ideal for any generator or
application where there is not sufficient space to install CTs.
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS
No CTs required Saves space and simplifies installation
Adjustable pickup
(100-1200 A)
Adjustable trip setting provides a wide range of
protection and allows system coordination
Adjustable time delay
(0-1.0 s)
Adjustable trip delay allows quick protection and
system coordination
Output contacts Form C ground-fault output contacts for alarming
or tripping purposes
Analog output
(0-1 mA)
Provides means for connecting to an optional
meter (PGA-0500) or control system
N-G continuity alarm Monitors neutral-to-ground integrity and alarms if
ground path becomes open circuit
Passive filtering Eliminates nuisance tripping
Features & Benefits
PGA-0500 Analog % Current Meter
Optional panel-mounted analog meter
displays ground-fault current as a
percentage of the set-point.
Accessories
ACCESSORIES REQUIREMENT
PGA-0500 Optional
PMA-55 Optional
PMA-60 Optional
Note: For optional conformal coating please consult factory.
Specifications
IEEE Device Numbers Ground Fault (50G/N, 51G/N)
Input Voltage See ordering information
Dimensions H 75 mm (3.0”); W 55 mm (2.2”);
D 115 mm (4.5”)
Trip Level Settings 100-1200 A
Trip Time Delay Settings 0-1.0 s
Contact Operating Mode Non-fail-safe
Test Button Local
Reset Button Local and remote
Output Contacts Form C
Analog Output 0-1 mA
Conformally Coated Consult factory
Approvals UL Listed (E183688)
Warranty 5 years
Mounting DIN, Surface (standard)
Panel (with PMA-55 or PMA-60 adapter)
PGR-4300
(Generator
Ground-Fault Relay)
Control
Power
G
58
Protection Relays
Littelfuse.com/relayscontrols © 2022 Littelfuse, Inc.
© 2022 Littelfuse, Inc. 59 Littelfuse.com/relayscontrols
GROUND-CONDUCTOR MONITORING
2
Protection Relays
For More Information…
and to download our technical note on
Ground-Fault Ground-Check, visit
Littelfuse.com/Ground-faultPaper
GROUND-CONDUCTOR MONITORING
Continuously monitor the integrity of the ground conductor to protect
portable equipment from hazardous voltages caused by ground faults.
SE-105 / SE-107 Series Ground-Fault Ground-Check Monitor....... 60
SE-134C / SE-135 Series Ground-Fault Ground-Check Monitor....... 61
60 © 2022 Littelfuse, Inc.
Protection Relays
Littelfuse.com/se-105, Littelfuse.com/se-107
GROUND-CONDUCTOR MONITORING
2
SE-105 / SE-107 SERIES
Ground-Fault Ground-Check Monitor
Description
The SE-105/SE-107 is a combination ground-wire monitor
and ground-fault relay for resistance-grounded systems. It
continuously monitors the integrity of the ground conductor
to protect portable equipment from hazardous voltages
caused by ground faults. The SE-105/SE-107 is an excellent
choice for trailing cables 5 kV and under in underground mining
applications. For higher voltages or long-cable applications, see
the SE-134C/SE-135.
Specifications
IEEE Device Numbers Checking or Interlocking Relay (3GC),
Ground Fault (50G/N, 51G/N)
Input Voltage See ordering information
Dimensions H 150 mm (5.9”); W 109 mm (4.3”);
D 100 mm (4.0”)
Trip Level Settings 0.5, 2.0, 4.0 A
Trip Time Settings 0.1-1.0 s
Contact Operating Mode Selectable fail-safe or non-fail-safe (SE-105)
Fail-safe only (SE-107)
Harmonic Filtering Standard feature
Reset Button Local and remote
Output Contacts Isolated Form A
Approvals CSA certified, UL Listed (E340889),
C-Tick (Australian)
Conformally Coated Standard feature
Warranty 5 years
Mounting Surface
ORDERING NUMBER CONTROL POWER
SE-105 120 Vac
SE-105D 120 Vac/Vdc
SE-105E 240 Vac
SE-107 120 Vac
SE-107D 120 Vac/Vdc
SE-107E 240 Vac
Ordering Information
Consult manual online for additional ordering options.
Simplified Circuit Diagram
CT200 Series Current Transformer
Required CT detects ground-fault current.
1N5339B Termination Device
5 W axial-lead ground-check termination;
included with SE-105/SE-107.
SE-TA6 Termination Assembly
Optional termination assembly with convenient
terminals and mounting holes
SE-TA6-SM Stud-Mount Termination Assembly
Optional 50 W ground-check termination that is
robust and compact for submersible pumps.
Wire lead simplifies installation.
Accessories
A
B
TRAILING
CABLE CT
L2
L1
TERMINATION
DEVICE
A
G
GC
C
GROUNDED B
SUPPLY M
SE-105 SERIES
SE-107 SERIES
(Ground-Fault
Ground-Check
Monitor)
B
FEATURES BENEFITS
Adjustable pickup
(0.5, 2.0, 4.0 A)
Unit can be used on a wide variety of trailing
cable applications
Adjustable time delay
(0.1-2.0 s)
Adjustable trip delay for quick protection and
system coordination
Harmonic filter Prevents false operation
Zener-characteristic
termination assembly Provides reliable ground-check loop verification
Fail-safe ground-check
circuit
Ensures ground-check circuit remains safe
even in the event of equipment failure
Conformal coating Additional coating protects circuit boards
against harsh environment
SE-105: selectable UV- or
shunt-trip mode Provides flexibility for different applications
SE-107: UV-trip mode only Eliminates chance of unauthorized change to
trip circuit
Features & Benefits
ACCESSORIES REQUIREMENT
CT200 Series Required
1N5339B Included
SE-TA6, SE-TA6-SM Optional
SE-TA6A Series Optional
RK-102, RK-105, RK-105I Optional
RK-13 Optional
PPI-600V Optional
A
Ground-Conductor Monitoring
© 2022 Littelfuse, Inc. 61
Protection Relays
Littelfuse.com/se-134c, Littelfuse.com/se-135
GROUND-CONDUCTOR MONITORING
2
Ground-Conductor Monitoring
SE-134C / SE-135 SERIES
Ground-Fault Ground-Check Monitor
Description
The SE-134C/SE-135 is a microprocessor-based, combination
ground-wire monitor and ground-fault relay for resistancegrounded or solidly grounded systems. It continuously monitors
the integrity of the ground conductor to protect portable
equipment from hazardous voltages caused by ground faults.
The SE-134C/SE-135 is field proven in monitoring trailing
cables on large mobile equipment such as drag-lines, mining
shovels, shore-to-ship power cables, dock-side cranes, stackerreclaimers, submersible pumps, and portable conveyors.
Specifications
IEEE Device Numbers Checking or Interlocking Relay (3GC),
Ground fault (50G/N, 51G/N)
Input Voltage 65-265 Vac; 85-275 Vdc; 18-72 Vdc
Dimensions H 213 mm (8.4"); W 99 mm (3.9"); D 132 mm (5.2")
Trip Level Settings 0.5 -12.5 A for SE-CS10, 2 - 50 A for SE-CS40
Trip Time Settings 0.1-2.5 s
Contact Operating Mode Selectable fail-safe or non-fail-safe
Harmonic Filtering Standard feature
Test Button Standard feature
Reset Button Standard feature
Output Contacts Isolated Form A and Form B, Two Form C
Approvals CSA certified, UL Listed (E340889),
C-Tick (Australia)(3), CE(3)
Conformally Coated Standard feature
Warranty 5 years
Mounting Panel, Surface
GC Trip Resistance 28Ω (Standard), 45Ω (XGC Option)
ORDERING
NUMBER OPTION POWER SUPPLY COMM
SE-134C Blank or XGC 0=120/240 Vac/Vdc 0=None
1=24/48 Vdc (1)
SE-135 Blank or XGC 0=120/240 Vac/Vdc 0=None
1=24/48 Vdc (1) (2) 3=Ethernet (1)
Ordering Information
(1) CE/C-Tick not available.
(2) Not available with Ethernet option 3.
(3) See ordering information.
See Current Transformer Selection Guide and Accessory Information.
Simplified Circuit Diagram
SE-CS10 or SE-CS40 Series Ground-Fault
Current Transformer
Required zero-sequence current transformer
detects ground-fault current.
SE-TA6A Series, SE-TA12A Series
Termination Assembly
Required termination assembly;
temperature compensated.
Accessories
A
B
FEATURES BENEFITS
Adjustable pickup
(0.5-12.5 A for SE-CS10)
(2 - 50 A for SE-CS40)
Unit can be used on a wide variety of trailing
cable applications
Adjustable time delay
(0.1-2.5 s)
Adjustable trip delay for quick protection and
system coordination
Output contacts Separate annunciation of ground-fault and groundcheck faults
Ground-check
LED indication
Indication of open or short ground-check wire
makes it easier to find faults
CT-loop monitoring Alarms when CT is not connected
High-induced-ac
rejection
Makes unit suitable for applications with high
voltages and long cables
DFT (Harmonic) filter Prevents false operation
Zener-characteristic
termination assembly Provides reliable ground-check loop verification
Fail-safe circuits Ensures ground-check and ground-fault circuits
remain safe even in the event of equipment failure
Conformal coating Additional coating protects circuit boards
against harsh environment
XGC option Increases maximum cable length for groundcheck monitoring (10 km typical)
Features & Benefits
ACCESSORIES REQUIREMENT
SE-CS10 Series Required
SE-CS40 Series (for SE-135) Optional
SE-TA6A Series (for SE-134C) Required
SE-TA12A/SE-TA12B Combination (for SE-134C) Optional
SE-TA12A Series (for SE-135) Required
SE-IP65CVR-G Optional
RK-132 Optional
PPI-600V Optional
TRAILING
CABLE CT
L2
L1
TERMINATION
DEVICE
A
G
GC
C
GROUNDED B
SUPPLY M
SE-134C SERIES
SE-135 SERIES
(Ground-Fault
Ground-Check
Monitor)
B
A
62 © 2022 Littelfuse, Inc.
Protection Relays
Littelfuse.com/relayscontrols
© 2022 Littelfuse, Inc. 63
Protection Relays
Littelfuse.com/relayscontrols
RESISTANCE GROUNDING/NGR MONITORING
3
For More Information…
and to download our White Paper
Why NGRs Need Contiuous
Monitoring, visit
Littelfuse.com/TechnicalCenter
Neutral Grounding Resistor Sizing Chart
System Voltage
(Line-to-line)
NGR Let-Through Current
and Resistance Time Rating
208 V 5 A / 24 Ohms Continuous
480 V 5 A / 55 Ohms Continuous
600 V 5 A / 69 Ohms Continuous
2,400 V 5 A / 277 Ohms or 10 A / 139 Ohms Continuous or 10 sec
4,160 V 5 A / 480 Ohms or 10 A / 240 Ohms Continuous or 10 sec
13,800 V 10 A / 798 Ohms or 200 A / 40 Ohms 10 seconds
25,000 V 200 A / 72 Ohms or 400 A / 36 Ohms 10 seconds
34,500 V 200 A / 100 Ohms or 400 A / 50 Ohms 10 seconds
Note: The values shown are for any size transformer and are typical.
Note: The above table is for illustrative purposes only. Actual values may differ based
on a variety of individual system considerations, such as capacitive charging current
and co-ordination study results.
RESISTANCE GROUNDING/NGR
MONITORING
Continuously monitoring the neutral-grounding resistor (NGR) and the
neutral-to-ground path is critical to ensure the system operates as
expected. Current-sensing ground-fault relays will not operate if the NGR
or system ground is open circuit.
Neutral Grounding Resistor Sizing Chart............................................. 63
SE-325 Series Neutral Grounding Resistor Monitor................... 64
SE-330 /
SE-330HV Series Neutral Grounding Resistor Monitor................... 65
SE-330AU Series Neutral Earthing Resistor Monitor...................... 67
NGR Series–US Neutral Grounding Resistor System............................ 68
NGR Series–Canada Neutral Grounding Resistor System............................ 77
NGRM-ENC Series Enclosed Neutral Grounding Resistor Monitor ... 83
64 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/se-325
Neutral Grounding Resistor Monitoring
SE-325 SERIES (PGM-8325)
Neutral Grounding Resistor Monitor
Description
The SE-325 Neutral Grounding Resistor Monitor is used on
resistance-grounded systems up to 25 kV to monitor the
integrity of the neutral-to-ground path and to detect ground
faults. It measures current and voltage in a transformer or
generator neutral-to-ground connection and continuity of the
neutral-grounding resistor (NGR). The SE-325 coordinates
these three measurements to detect a loose connection,
corrosion, ground fault, or NGR failure, and provides one
alarm or trip output contact.
ORDERING NUMBER CONTROL POWER
SE-325 120 Vac
SE-325D 120 Vac/Vdc
SE-325E 240 Vac
Ordering Information
Simplified Circuit Diagram
NGR
L2
CT
L1
SE-325 SERIES
ER SERIES
(Sensing Resistor)
(NGR Monitor)
A
FEATURES BENEFITS
Continuous NGR
monitoring
Detects resistor failure within seconds, reduces
transient-overvoltage risk, removes risk of groundfault-detection failure
Ground-fault
Detection
Main or backup protection to detect a ground
fault anywhere on the monitored system
Adjustable pickup
(0.5-4 A)
Select greatest sensitivity without
false operation
Adjustable time delay
(0.1-2 s) Adjustable trip delay allows system coordination
Output contacts Form A output contact
Selectable contact
operating mode
Selectable fail-safe or non-fail-safe operating
modes allows connection to shunt or undervoltage
breaker coil or alarm system
Features & Benefits
B
ACCESSORIES REQUIREMENT
CT200 Series Required
ER Series Required
SE-MRE-600 Optional
RK-325, RK-325I, RK-302 Optional
RK-13 Optional
NGRM-ENC Optional
Specifications
IEEE Device Numbers Ground Fault (50G/N, 51G/N),
Overvoltage (59N), Lockout Relay (86),
Checking Relay (3)
Input Voltage See ordering information
Dimensions H 150 mm (5.9"); W 109 mm (4.3"); D 100 mm (4.0")
GF Trip Level Settings 0.5-4.0 A
GF Trip Time Settings 0.1-2.0 s
RF Trip-Level Settings 20-400 Vac (≤5 kV systems)
100-2,000 Vac (>5 kV systems)
Contact Operating Mode Selectable fail-safe or non-fail-safe
Reset Button Standard feature
Output Contacts Form A
Approvals CSA certified, UL Listed (E340889),
C-Tick (Australian)
Conformally coated Standard feature
Warranty 5 years
Mounting Surface
CT200 Series Current Transformer
Required CT detects ground-fault current.
B
Accessories
A ER Series Sensing Resistor
Required interface between the power system
and the SE-325. Eliminates hazardous voltage
levels at the monitor.
RK Series Remote Indication and Reset
Optional panel-mounted remote indication
and reset assemblies. Available in NEMA 1 or
NEMA 4 configurations.
Consult manual online for additional ordering options.
© 2022 Littelfuse, Inc. 65
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/se-330, Littelfuse.com/se-330hv
Neutral Grounding Resistor Monitoring
Description
The SE-330 is an advanced ground-fault and neutral-groundingresistor monitoring relay that is compliant with Rule10-302 of
the 2018 Canadian Electrical Code Part I (CE Code). It measures
neutral current, neutral-to-ground voltage, and neutral-to-ground
resistance. It provides continuous monitoring of the neutral-toground path to verify that the neutral-grounding resistor (NGR)
is intact and that it has not been bypassed or shorted. An open
NGR renders current-sensing ground-fault protection inoperative
and could result in a false belief that the system is functioning
properly. A shorted NGR results in higher-than-expected groundfault current. The SE-330 can be used with low- and mediumvoltage transformers and generators with low- or high-resistance
grounding used in processing, manufacturing, chemical, pulp and
paper, petroleum, and water-treatment facilities. For high-voltage
applications, use the SE-330HV. For applications that require
conformance to Australian standards, use the SE-330AU.
Resistor Monitoring
The SE-330 combines the measured values of resistance, current,
and voltage to continuously determine that an NGR is intact. It is
able to detect an open or shorted resistor with or without a ground
fault present. Sensing resistors are matched to the system voltage
and are used to monitor NGRs on systems up to 72 kV.
Ground-Fault Monitoring
The SE-330 uses an application-appropriate current transformer to
reliably detect ground-fault currents as small as 100 mA. DiscreteFourier Transform (DFT) filtering ensures that false trips due to
harmonic noise from adjustable-speed drives do not occur. Should
the resistor open and a ground fault subsequently occur, the
SE-330 will detect the fault through voltage measurement, while
other current-only sensing relays would be ineffective.
Pulsing Ground-Fault Location
The SE-330 is capable of controlling a pulsing contactor, which is
used to switch the NGR resistance in a pulsing-compatible NGR
package. The resulting ground-fault current is distinguishable from
charging currents and noise and will only appear upstream of the
ground fault, making fault location fast and easy, even without
isolating feeders or interrupting loads.
SE-330, SE-330HV SERIES
Neutral Grounding Resistor Monitor
Simplified Circuit Diagram
NGR
L2
CT
L1
SE-330 SERIES
ER SERIES
(Sensing Resistor)
(NGR Monitor)
A
B
ORDERING
NUMBER
POWER
SUPPLY COMM K4 UNIT HEALTHY
CONTACT
SE-330 - X X - 0 X
SE-330
for applications
35 kV or less
SE-330HV
for 72 kV
applications
0=120/240
V ac/V dc
2=48 Vdc
0=USB Only
1=DeviceNet
3=EtherNet
(Dual RJ45)
4=EtherNet
(SC Fiber & RJ45)
5=EtherNet
(Dual SC Fiber)
6=IEC61850
(Dual RJ45)
7=IEC61850
(SC Fiber & RJ45)
8=IEC61850
(Dual SC Fiber)
0=Normally Open
1=Normally Closed
NOTE: For Australian applications, see the SE-330AU.
Ordering Information
ACCESSORIES REQUIREMENT
ER Series Sensing Resistor Required
Current Transformer Required
SE-IP65CVR-G Optional
SE-MRE-600 Optional
RK-332 Optional
NGRM-ENC Optional
PGA-0520 Optional
SE-330-SMA Optional
Littelfuse reserves the right to make product changes, without notice. Material in this document is as
accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information.
For detailed wiring diagram, see adjacent page.
ER Series Sensing Resistor
Required interface between the power system and the
SE-330/SE-330HV. Eliminates hazardous voltage levels
at the relay.
Accessories
A
B ELCT5 Series Ground-Fault Current Transformer
Sensitive ground-fault current detection (5 A primary).
ELCT30 Series Ground-Fault Current Transformer
Sensitive ground-fault current detection (30 A primary).
Other Current Transformer
For low-resistance NGRs choose a CT primary
approximately equal to the NGR rating. Inputs are
provided for 1- and 5- A- secondary CTs.
SE-IP65CVR-G Hinged Transparent Cover
Watertight cover, tamper resistant, IP65 protection.
66 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/se-330, Littelfuse.com/se-330hv
CONTROL
POWER
UNIT
HEALTHY
PULSE
ENABLE (SE-330 ONLY)
RESET
TRIP OR
PULSING
RESISTOR
FAULT
GROUND
FAULT
+
POWER SYSTEM
NEUTRAL (X0)
R
EFCT
1 A
5 A
COMMON
G
ANALOG
OUTPUT
4-20 mA
+24 Vdc
0 V
(required)
(required)
NEUTRAL-GROUNDINGRESISTOR MONITOR
ER SERIES SE-330 SERIES SENSING RESISTOR
CURRENT TRANSFORMER
29
28
27
26
11
10
9
8
3
2
1
25
24
23
17
16
15
13
12
22
21
20
19
18
7
R 6
G
N
(K1)
(K2)
(K3)
A
B
Neutral Grounding Resistor Monitoring
SYSTEM VOLTAGE
(VOLTS)
NEUTRAL-GROUNDING RESISTOR SENSING RESISTOR GROUND-FAULT
PICKUP LEVEL
(AMPERES)
VN PICKUP LEVEL
(VOLTS) CURRENT
(AMPERES)
RESISTANCE
(OHMS) MODEL RESISTANCE
(SWITCH S5 SETTING)
480 5 55 ER-600VC 20 kΩ 2.5 170
600 5 69 ER-600VC 20 kΩ 2.5 200
2,400 5 277 ER-5KV 20 kΩ 2.5 800
4,160 5 480 ER-5KV 20 kΩ 3 1,700
7,200 10 416 ER-15KV 100 kΩ 2 170 x 5 = 850
14,400 15 554 ER-15KV 100 kΩ 3 340 x 5 = 1,700
Typical Values
DISCLAIMER: The above table is for illustrative purposes only. Actual values may differ based on a variety of individual system considerations, such as capacitive charging current and coordination study results.
Wiring Diagram
Littelfuse reserves the right to make product changes, without notice. Material in this document is as accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information.
SE-330, SE-330HV SERIES
Neutral Grounding Resistor Monitor
Specifications
IEEE Device Numbers Ground Fault (50G/N, 51G/N, 59N), Checking Relay (3), Lockout Relay (86)
Input Voltage See ordering information
Dimensions H 213 mm (8.4"); W 98 mm (3.9"); D 132 mm (5.2")
GF Trip-Level Settings 2–100 % of CT-Primary Rating in 1% increments
GF Trip-Time Settings 0.1–10 s
Vn Trip-Level Settings 20–2,000 V ac (≤5 kV systems) 100-10,000 V ac (>5 kV systems)
Contact Operating Mode Selectable fail-safe or non-fail-safe (K1, K2, K3)
Harmonic Filtering Standard feature
Reset Button Standard feature
Output Contacts Two Form A and two Form C
Pulsing Circuit 1.0–3.0 s in 0.2 s increments (SE-330 only)
Approvals CSA certified, UL Listed (E340889), CE (European Union), RCM (Australian)
Communications Mini USB (standard); DeviceNet (optional), IEC 61850 (optional),
Modbus TCP and EtherNet/IP (optional)
Analog Output 4–20 mA, self or loop powered
Conformally Coated Standard feature
Warranty 5 years
Mounting Panel and surface (optional)
FEATURES IEEE # BENEFITS
Continuous NGR monitoring 3 Detects resistor failure within seconds, reduces transient-overvoltage risk, removes risk of ground-fault-detection failure
Shorted NGR detection 3 Detects a ground fault on the neutral that could bypass the resistor, ensures fault current is not higher than expected
Ground-fault detection 50G/N, 51G/N, 59N Main or backup protection to detect a ground fault anywhere on the monitored system
Adjustable pickup (2–100 %) Select greatest sensitivity without false operation, adjustable in 1% increments (MEM setting)
Adjustable time delay (0.1–10 s) Adjustable trip delay allows quick protection and system coordination
Universal CT compatibility Allows the use of a CT that gives required ground-fault settings
Programmable output contacts Two programmable Form C and One programmable Form A (Ground Fault, Resistor Fault, Unit Health)
Selectable contact
operating mode
Selectable fail-safe or non-fail-safe operating modes allows connection to shunt or undervoltage breaker
coil or alarm circuit (K1, K2, and K3 output contacts)
Analog output (4–20 mA) Connect an optional PGA-0520 meter or control system
Pulsing output (SE-330 only) Control the operation of a pulsing ground-fault-location circuit
Trip records On-board 100-event (with date and time) recorder helps with system diagnostics
Harmonic filtering (DFT) Eliminate false trips due to harmonic noise from ASDs
Local communications Mini USB port to view measured values, configure settings, and check event records
Data logging On-board microSD card (included) can be used for long-term data logging
Network communications
Remotely view measured values and event records, reset trips, and cause a remote trip
Available Protocol Options:
IEC 61850– with dual RJ45, SC Fiber and RJ45, or Dual SC Fiber Interface
Modbus TCP and Ethernet/IP– with dual RJ45, SC Fiber and RJ45, or Dual SC Fiber Interface
DeviceNet– with CAN interface
Software PC-interface software (SE-MON330) is available at Littelfuse.com/RelaySoftware
Selectable reset mode Selectable latching or auto-reset operation
Unit-healthy output Verifies SE-330 is operating correctly, available as Form A or Form B output contact
Conformal coating Internal circuits are conformally coated to protect against corrosion and moisture
Features & Benefits
© 2022 Littelfuse, Inc. 67
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/se-330au
SE-330AU SERIES
Neutral Earthing Resistor Monitor
Simplified Circuit Diagram
NER
L2
CT
L1
SE-330AU
SERIES
ER SERIES
(Sensing Resistor)
(NER Monitor) A
B
ACCESSORIES REQUIREMENT
ER Series Sensing Resistor Required
Current Transformer Required
SE-IP65CVR-G Optional
SE-MRE-600 Optional
RK-332 Optional
Specifications
Input Voltage See ordering information
Dimensions H 213 mm (8.4”); W 98 mm (3.9”); D 132 mm (5.2”)
GF Trip-Level Settings 0.125 to 30 A
GF Trip-Time Settings 0.1 to 0.5 s
Vn Trip-Level Settings 20-2,000 Vac (≤5 kV systems)
100-10,000 Vac (>5 kV systems)
Output Contacts Two Form A, Two Form C
Operating Mode Fail-Safe
Harmonic Filtering Standard feature
Reset Front panel push button and remote input
Approvals C-Tick (Australian), CE
Communications Mini USB (standard); DeviceNet (optional), IEC 61850
(optional), Modbus TCP and EtherNet/IP (optional)
Analog Output 4-20 mA, self or loop powered
Conformal Coating Standard feature
Warranty 5 years
Mounting Panel, Surface (optional)
Neutral Earthing Resistor Monitoring
Description
The SE-330AU Series is an advanced earth-fault and earthingresistor monitoring relay for low- and medium-voltage transformers
and generators. It monitors neutral current, neutral-to-earth voltage,
and neutral-to-earth resistance. It provides continuous monitoring of
the neutral-to-earth path to verify that the neutral-earthing resistor
(NER) is intact. This is of utmost importance—an open NER renders
current-sensing earth-fault protection inoperative and could result in
a false belief that the system is functioning properly. The SE-330AU
earth-fault function complies with AS/NZS 2081.3:2002. Outputs
include four relay outputs, and an analog output. A mini USB port is
included to view measured values, configure settings, and check
event records. An on-board micro SD card can be used for long-term
data logging. Network communications options are available. For
non-AS/NZS 2081 applications, see the SE-330 or SE-330HV Series.
Resistor Monitoring
The SE-330AU combines the measured values of resistance,
current, and voltage to continuously determine that the NER is
intact. It is able to detect a resistor failure with or without an earth
fault present. Sensing resistors are matched to the system voltage
and are used to monitor NGRs on systems up to 35 kV.
Earth-Fault Monitoring
The SE-330AU uses a 5- or 30-A-primary current transformer to
provide a pickup-setting range of 0.125 to 5 A or 0.75 to 30 A to
comply with AS/NZS 2081.3:2002. DFT filtering ensures that false
trips due to harmonic noise from adjustable-speed drives do not
occur. Open-CT detection is provided.
ER Series Sensing Resistor
Required interface between the power system and
the SE-330AU. Eliminates hazardous voltage levels
at the relay.
EFCT Series Earth-Fault Current Transformer
Sensitive earth-fault current detection
(5 A primary).
SE-CS30 Series Earth-Fault Current Transformer
Sensitive earth-fault current detection (30 A primary).
Accessories
A
B
ORDERING
NUMBER
POWER
SUPPLY COMM K4 UNIT HEALTHY
CONTACT
SE-330AU - X X - 0 X
SE-330AU
for all apps. 35
kV or less
SE-330HV
for 72 kV apps.
0=120/240
Vac/Vdc
2=48 Vdc
0=USB Only
1=DeviceNet
3=EtherNet
(Dual RJ45)
4=EtherNet
(SC Fiber & RJ45)
5=EtherNet
(Dual SC Fiber)
6=IEC61850
(Dual RJ45)
7=IEC61850
(SC Fiber & RJ45)
8=IEC61850
(Dual SC Fiber)
0=Normally Open
1=Normally
Closed
Ordering Information
68 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Neutral Grounding Resistor System
Littelfuse.com/NGR-US
NGR SERIES – US
Neutral Grounding Resistor System
Description
High-resistance grounding prevents many of the problems
that are associated with ungrounded and solidly grounded
electrical distribution and utilization systems. High-resistance
grounding can limit point-of-fault damage, eliminate transient
overvoltages, reduce the arc-flash hazards, limit voltage
exposure to personnel, and provide adequate tripping levels
for selective current-based ground-fault detection and
coordination.
The Littelfuse Neutral Grounding Resistor System is a
neutral grounding resistor (NGR), current transformer, and
sensing resistor installed in a NEMA 3R enclosure used to
high-resistance ground transformers and generators. The
NGR system is designed for use with Littelfuse Neutral
Grounding Resistor Monitors for complete system grounding
and grounding protection.
The NGR series – US systems are designed for use in US
applications and all other parts of the world, not including
Canada. For applications in Canada, please use the NGR
series – Canada.
Applications
High-resistance grounding is applied on transformers and
generators where safety and continuity of service are
important. A faulted feeder may remain in operation until it
is safe to repair the fault, where allowed by the local
electrical code.
Features
Enclosure
The NGR Series – US comes pre-installed in a
ventilated NEMA 3R galvanized steel enclosure
and components are pre-wired to terminals for
ease of installation. Back view shown on left.
ER Series Sensing Resistor
Use with the SE-325 or the SE-330 to continuously monitor
the continuity of a neutral-grounding resistor and eliminate
hazardous voltage levels at the relay.
ER-600VC is designed for use on systems up
to 600 V for indoor applications. Available in
optional moisture-proof enclosure (shown on
left) for outdoor applications.
ER-5KV for use on systems up to 4160 V for
indoor applications.
ER-5WP is designed for use on systems up
to 4160 V and comes with weather-protected
terminals for outdoor installations.
Earth-Fault Current Transformer
Used with the SE-325 or the SE-330 to measure ac current
flowing through the NGR for use with the continuity
monitoring circuit and to detect ground faults.
ELCT5-31 used with SE-330 for 5 A
and 10 A NGRs.
SE-CS10-2.5 used with SE-330 for 10 A
and 15 A NGRs.
CT200 used with the SE-325 for all
applications.
5SHT-101-E (not shown) used with SE-330 for
25 A NGRs.
Benefits
Eliminate phase-to-ground arc-flash incidents
Eliminate transient overvoltages
Reduce point-of-fault damage
Can provide continuity of service during a ground fault
Includes current transformer and ER series sensing
resistor for use with Littelfuse monitoring relay and for
ease of installation.
OR
© 2022 Littelfuse, Inc. 69
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Neutral Grounding Resistor System
Littelfuse.com/NGR-US
NGR SERIES – US
Simplified Circuit Diagram with Littelfuse Neutral Grounding Resistor Monitor
NGR
L2
CT
L1
ER Series
Sensing Resistor
NGR Monitor
Note 2
Note 1 Transformer or
Generator Neutral (XO)
Note 4
Note 5
Note 3
Note 6
NGR SYSTEM
Note 1: Use minimum #8 AWG white or grey conductor insulated to system voltage to connect NGR to neutral.
Note 2: Use conductor insulated to system voltage (#14 AWG is typically used) and a separate lug at the X0 point
to connect ER Series Sensing Resistor to neutral.
Note 3: Locate NGR system near transformer or generator.
Note 4: Two-conductor twisted cable required, shielded recommended.
Note 5: Voltage between ER Series Sensing Resistor terminals R and G is limited to 100 V by internal clamp.
Note 6: Use minimum #8 AWG green or bare conductor to connect NGR to ground.
70 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Neutral Grounding Resistor System
Littelfuse.com/NGR-US
NGR SERIES – US
PART
NUMBER
LINE-LINE
VOLTAGE (V)
LET-THROUGH
CURRENT (A)
IMPEDANCE
(OHMS)
TIME
RATING
CURRENT
TRANSFOMER
CT PRIMARY
RATING (A)
CT SECONDARY
RATING (A)
SENSING
RESISTOR ENCLOSURE
NGRUS138 480 2 138 Continuous CT200 200*** 5.0 ER-600VC NEMA 3R
NGRUS278 480 2 138 Continuous CT200 200*** 5.0 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGRUS314 480 2 138 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R
NGRUS315 480 2 138 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGRUS003 480 5 55.4 Continuous CT200 200*** 5.0 ER-600VC NEMA 3R
NGRUS194 480 5 55.4 Continuous CT200 200*** 5.0 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGRUS316 480 5 55.4 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R
NGRUS317 480 5 55.4 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGRUS318 600 2 173.5 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R
NGRUS319 600 2 173.5 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGRUS354 600 2 173.5 Continuous CT200 200*** 5.0 ER-600VC NEMA 3R
NGRUS355 600 2 173.5 Continuous CT200 200*** 5.0 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGRUS169 600 5 69.4 Continuous CT200 200*** 5.0 ER-600VC NEMA 3R
NGRUS170 600 5 69.4 Continuous CT200 200*** 5.0 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGRUS320 600 5 69.4 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R
NGRUS321 600 5 69.4 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGRUS114 4160 5 480.9 Continuous CT200 200*** 5.0 ER-5KV NEMA 3R
NGRUS115 4160 5 480.9 Continuous CT200 200*** 5.0 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS322 4160 5 480.9 10 s ELCT5-31 5* 0.05 ER-5KV NEMA 3R
NGRUS323 4160 5 480.9 10 s ELCT5-31 5* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS324 4160 5 480.9 Continuous ELCT5-31 5* 0.05 ER-5KV NEMA 3R
NGRUS325 4160 5 480.9 Continuous ELCT5-31 5* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS356 4160 5 480.9 10s CT200 200*** 5.0 ER-5KV NEMA 3R
NGRUS357 4160 5 480.9 10s CT200 200*** 5.0 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS326 4160 10 240.5 10 s SE-CS10-2.5 10* 0.05 ER-5KV NEMA 3R
NGRUS327 4160 10 240.5 10 s SE-CS10-2.5 10* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
Ordering Information
© 2022 Littelfuse, Inc. 71
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/NGR-US
NGR SERIES – US
Neutral Grounding Resistor System
PART
NUMBER
LINE-LINE
VOLTAGE (V)
LET-THROUGH
CURRENT (A)
IMPEDANCE
(OHMS)
TIME
RATING
CURRENT
TRANSFOMER
CT PRIMARY
RATING (A)
CT SECONDARY
RATING (A)
SENSING
RESISTOR ENCLOSURE
NGRUS328 4160 10 240.5 Continuous SE-CS10-2.5 10* 0.05 ER-5KV NEMA 3R
NGRUS329 4160 10 240.5 Continuous SE-CS10-2.5 10* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS358 4160 10 240.5 10s CT200 200*** 5.0 ER-5KV NEMA 3R
NGRUS359 4160 10 240.5 10s CT200 200*** 5.0 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS360 4160 10 240.5 Continuous CT200 200*** 5.0 ER-5KV NEMA 3R
NGRUS361 4160 10 240.5 Continuous CT200 200*** 5.0 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS330 4160 15 160.3 10 s SE-CS10-2.5 10* 0.05 ER-5KV NEMA 3R
NGRUS331 4160 15 160.3 10 s SE-CS10-2.5 10* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS332 4160 15 160.3 Continuous SE-CS10-2.5 10* 0.05 ER-5KV NEMA 3R
NGRUS333 4160 15 160.3 Continuous SE-CS10-2.5 10* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS362 4160 15 160.3 10s CT200 200*** 5.0 ER-5KV NEMA 3R
NGRUS363 4160 15 160.3 10s CT200 200*** 5.0 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS364 4160 15 160.3 Continuous CT200 200*** 5.0 ER-5KV NEMA 3R
NGRUS365 4160 15 160.3 Continuous CT200 200*** 5.0 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS244 4160 25 96.2 10s CT200 200*** 5.0 ER-5KV NEMA 3R
NGRUS334 4160 25 96.2 10 s 5SHT-101-E 20** 1 ER-5KV NEMA 3R
NGRUS335 4160 25 96.2 10 s 5SHT-101-E 20** 1 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS336 4160 25 96.2 Continuous 5SHT-101-E 20** 1 ER-5KV NEMA 3R
NGRUS337 4160 25 96.2 Continuous 5SHT-101-E 20** 1 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS366 4160 25 96.2 10s CT200 200*** 5.0 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGRUS367 4160 25 96.2 Continuous CT200 200*** 5.0 ER-5KV NEMA 3R
NGRUS368 4160 25 96.2 Continuous CT200 200*** 5.0 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
* Connect to SE-330 terminals 8 and 11
** Connect to SE-330 terminals 9 and 11
*** Connect to SE-325 terminals CT1 and CT2
Ordering Information
72 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Dimensions (in inches) and Mounting Diagrams
480 V & 600 V NGR Systems:
NGRUS314
NGRUS316
NGRUS318
NGRUS320
NGRUS315
NGRUS317
NGRUS319
NGRUS321
Littelfuse.com/NGR-US
Neutral Grounding Resistor System
© 2022 Littelfuse, Inc. 73
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/NGR-US
Neutral Grounding Resistor System
Dimensions (in inches) and Mounting Diagrams
4160 V NGR Systems:
NGRUS322
NGRUS323
NGRUS326
NGRUS327
NGRUS330
NGRUS331
NGRUS344
NGRUS345
NGRUS324
NGRUS325
74 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Dimensions (in inches) and Mounting Diagrams
4160 V NGR Systems:
NGRUS328
NGRUS329
NGRUS332
NGRUS333
NGRUS336
NGRUS337
Littelfuse.com/NGR-US
Neutral Grounding Resistor System
© 2022 Littelfuse, Inc. 75
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
NGR SERIES – US
Specifications: 480 V NGR Systems
Voltage 480 V line-to-line, 277 V line-to-neutral
Let-Through Current 2 A or 5 A
Resistance 138.5 Ω (2 A) or 55.4 Ω (5 A)
Tolerance +/- 10 % resistance
Duty Cycle Continuous rated
Current Transformer ELCT5-31:
For use with SE-330 NGR Monitor
Turns Ratio: 100:1
Current Rating: 5:0.05 A
Primary Rating with SE-330: 5 A when
connected to terminals 8 and 11
GF Trip Range: 100 mA to 5 A
Window Diameter: 31 mm (1.22”)
CT200:
For use with SE-325 NGR Monitor
Turns Ratio: 200:5
Current Rating: 200:5 A
GF Trip Range: 0.5, 2.0, 4.0 A
Window Diameter: 56 mm (2.2")
Sensing Resistor ER-600VC; Optional installation in NEMA 4
enclosure for outdoor applications
Insulation Level 11 KV BIL
Temperature Rise 385 °C (725 °F)
Resistor Type Stainless steel wire wound
Dimensions Refer to dimensions drawings
Weight 23 kg (50 lbs)
Altitude 0–2000 masl
Enclosure Style NEMA 3R, galvanized steel
Finish Powder coated
Color ANSI 61 grey
Mounting Floor mount
Siesmic Bracing Included
Approvals cULus or CSA at customer request
Warranty 12 months in service or 18 months from the
date of shipment whichever occurs first
Specifications: 600 V NGR Systems
Voltage 600 V line-to-line, 347 V line-to-neutral
Let-Through Current 2 A or 5 A
Resistance 174 Ω (2 A) or 69 Ω (5 A)
Tolerance +/- 10 % resistance
Duty Cycle Continuous rated
Frequency 50–60 Hz
Current Transformer ELCT5-31:
For use with SE-330 NGR Monitor
Turns Ratio: 100:1
Current Rating: 5:0.05 A
Primary Rating with SE-330: 5 A when
connected to terminals 8 and 11
GF Trip Range: 100 mA to 5 A
Window Diameter: 31 mm (1.22”)
CT200:
For use with SE-325 NGR Monitor
Turns Ratio: 200:5
Current Rating: 200:5 A
GF Trip Range: 0.5, 2.0, 4.0 A
Window Diameter: 56 mm (2.2")
Sensing Resistor ER-600VC; Optional installation in NEMA 4
enclosure for outdoor applications
Insulation Level 11 KV BIL
Temperature Rise 385 °C (725 °F)
Resistor Type Stainless steel wire wound
Dimensions Refer to dimensions drawings
Weight 23 kg (50 lbs)
Altitude 0–2000 masl
Enclosure Style NEMA 3R, galvanized steel
Finish Powder coated
Color ANSI 61 grey
Mounting Floor mount
Siesmic Bracing Included
Approvals cULus or CSA at customer request
Warranty 12 months in service or 18 months from the
date of shipment whichever occurs first
Littelfuse.com/NGR-US
Neutral Grounding Resistor System
76 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Specifications: 4160 V NGR Systems
Voltage 4160 V line-to-line, 2400 V line-to-neutral
Let-Through Current 5 A, 10 A, 15 A, or 25 A
Resistance 480 Ω (5 A), 240 Ω (10 A), 160 Ω (15 A),
or 96 Ω (25 A)
Tolerance +/- 10 % resistance
Duty Cycle Continuous-duty or 10-second-duty rating
Frequency 50-60 Hz
Current Transformer ELCT5-31:
For use with SE-330 NGR Monitor
Turns Ratio: 100:1
Current Rating: 5:0.05 A
Primary Rating with SE-330: 5 A when
connected to terminals 8 and 11
GF Trip Range: 100 mA to 5 A
Window Diameter: 31 mm (1.22”)
SE-CS10-2.5:
For use with SE-330 NGR Monitor
Turns Ratio: 200:1
Current Rating: 12.5:0.0625 A
Primary Rating with SE-330: 10 A when
connected to terminals 8 and 11
GF Trip Range: 200 mA to 10 A
Window Diameter: 63.5 mm (2.5”)
Turns Ratio: 100:5
Current Rating: 100:5 A
Primary Rating with SE-330: 20 A when
connected to terminals 9 and 11
GF Trip Range: 400 mA to 20 A
Window Diameter: 40 mm (1.56”)
CT200:
For use with SE-325 NGR Monitor
Turns Ratio: 200:5
Current Rating: 200:5 A
GF Trip Range: 0.5, 2.0, 4.0 A
Window Diameter: 56 mm (2.2")
Sensing Resistor ER-5KV
Optional ER-5WP for outdoor applications
Insulation Level 75 KV BIL
Temperature Rise Continuous-duty rated: 385 °C (725 °F)
10-second-duty rated: 760 °C (1400 °F)
Resistor Type Stainless Steel Wire Wound
Dimensions Refer to dimensions drawings
Weights
5 A, continuous-duty rated: 192 kg (424 lbs)
10 A, continuous-duty rated: 235 kg (519 lbs)
15 A, continuous-duty rated: 258 kg (568 lbs)
25 A, continuous-duty rated: 320 kg (705 lbs)
5 A, 10-second-duty rated: 136 kg (300 lbs)
10 A, 10-second-duty rated: 136 kg (300 lbs)
15 A, 10-second-duty rated: 136 kg (300 lbs)
25 A, 10-second-duty rated: 136 kg (300 lbs)
Altitude 0-1000 masl
Enclosure Style NEMA 3R, galvanized steel
Finish Powder coated
Color ANSI 61 grey
Mounting Floor mount
Siesmic Bracing Included
Approvals cULus or CSA at customer request
Warranty 12 months in service or 18 months from
the date of shipment, whichever
occurs first
Accessories
SE-325 Neutral Grounding Resistor Monitor
Basic ground-fault and neutral-grounding resistor
monitoring relay that measures neutral current,
neutral-to-ground voltage, and neutral-to-ground
continuity.
SE-330 Neutral Grounding Resistor Monitor
Advanced ground-fault and neutral-grounding
resistor monitoring relay that measures neutral
current, neutral-to-ground voltage, and neutral-toground resistance.
NGRM-ENC Enclosed Neutral Grounding
Resistor (NGR) Monitor
Type 4X enclosure housing a Littelfuse Startco
SE-325 or SE-330 Neutral Grounding Resistor
Monitor and optional accessories that include
a 480/600 V control power transformer (CPT),
faulted-phase indication (FPI; implemented
with an EL3100 Ground-Fault & Phase-Voltage
Indicator), earth-leakage panel meter, pulse-enable
control, and mounting options. Appropriate fusing
is included and field wiring is to terminal blocks.
Custom NGR Systems
Additional custom NGR systems are also available from
Littelfuse. For NGR systems not listed on this sheet please
contact Littelfuse by emailing NGRquotes@Littelfuse.com
NGR SERIES – US
Neutral Grounding Resistor System
Littelfuse.com/NGR-US
© 2022 Littelfuse, Inc. 77
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/NGR-CA
Neutral Grounding Resistor System
Description
High-resistance grounding prevents many of the problems
that are associated with ungrounded and solidly grounded
electrical distribution and utilization systems. High-resistance
grounding can limit point-of-fault damage, eliminate transient
overvoltages, reduce the arc-flash hazards, limit voltage
exposure to personnel, and provide adequate tripping levels
for selective current-based ground-fault detection and
coordination.
The Littelfuse Neutral Grounding Resistor System is a neutral
grounding resistor (NGR), current transformer, and sensing
resistor installed in a NEMA 3R enclosure used to highresistance ground transformers and generators. The NGR
system is designed for use with Littelfuse Neutral Grounding
Resistor Monitors for complete system grounding and
grounding protection.
The NGR series – Canada systems are specifically designed
for use in Canadian applications. For applications in the US and
other parts of the world, please use the NGR series – US.
Applications
High-resistance grounding is applied on transformers and
generators where safety and continuity of service are important.
A faulted feeder may remain in operation until it is safe to
repair the fault, where allowed by the local electrical code.
Features
Enclosure
The NGR Series - Canada comes pre-installed in
a ventilated NEMA 3R galvanized steel enclosure
and components are pre-wired to terminals for
ease of installation. Back view shown on left.
ER Series Sensing Resistor
Use with the SE-330 to continuously monitor the continuity of
a neutral-grounding resistor and eliminate hazardous voltage
levels at the relay.
ER-600VC is designed for use on systems up
to 600 V for indoor applications. Available in
optional moisture-proof enclosure (shown on
left) for outdoor applications.
ER-5KV for use on systems up to 4160 V for
indoor applications.
ER-5WP is designed for use on systems up
to 4160 V and comes with weather-protected
terminals for outdoor installations.
Earth-Fault Current Transformer
Used with the SE-330 to measure ac current flowing through
the NGR for use with the continuity monitoring circuit and to
detect ground faults.
ELCT5-31 used with SE-330 for 5 A
and 10 A NGRs.
SE-CS10-2.5 used with SE-330 for 10 A
and 15 A NGRs.
5SHT-101-E used with SE-330 for 25 A NGRs.
Benefits
Eliminate phase-to-ground arc-flash incidents
Eliminate transient overvoltages
Reduce point-of-fault damage
Can provide continuity of service during a ground fault
Includes current transformer and ER series sensing
resistor for use with Littelfuse monitoring relay and for
ease of installation.
NGR SERIES – CANADA
Neutral Grounding Resistor System
78 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
NGR SERIES – CANADA
Neutral-Grounding-Resistor System
Littelfuse.com/NGR-CA
Simplified Circuit Diagram with Littelfuse Neutral Grounding Resistor Monitor
NGR
L2
CT
L1
ER Series
Sensing Resistor
NGR Monitor
Note 2
Note 1 Transformer or
Generator Neutral (XO)
Note 4
Note 5
Note 3
Note 6
NGR SYSTEM
Note 1: Use minimum #8 AWG white or grey conductor insulated to system voltage to connect NGR to neutral.
Note 2: Use conductor insulated to system voltage (#14 AWG is typically used) and a separate lug at the X0 point
to connect ER Series Sensing Resistor to neutral.
Note 3: Locate NGR system near transformer or generator.
Note 4: Two-conductor twisted cable required, shielded recommended.
Note 5: Voltage between ER Series Sensing Resistor terminals R and G is limited to 100 V by internal clamp.
Note 6: Use minimum #8 AWG green or bare conductor to connect NGR to ground.
© 2022 Littelfuse, Inc. 79
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/NGR-CA
Neutral Grounding Resistor System
Ordering Information
PART
NUMBER
LINE-LINE
VOLTAGE (V)
LET-THROUGH
CURRENT (A)
IMPEDANCE
(OHMS)
TIME
RATING
CURRENT
TRANSFOMER
CT PRIMARY
RATING (A)
CT SECONDARY
RATING (A)
SENSING
RESISTOR ENCLOSURE
NGR1050 480 2 138 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R
NGR1041 480 2 138 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGR1036 480 5 55.4 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R
NGR1051 480 5 55.4 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGR1052 600 2 173.5 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R
NGR1053 600 2 173.5 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGR1038 600 5 69.4 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R
NGR1045 600 5 69.4 Continuous ELCT5-31 5* 0.05 ER-600VC NEMA 3R; Weather
Protected Sensing Resistor
NGR1066 4160 5 480.9 10 s ELCT5-31 5* 0.05 ER-600VC NEMA 3R
NGR1067 4160 5 480.9 10 s ELCT5-31 5* 0.05 ER-5KV NEMA 3R; Weather
Protected Sensing Resistor
NGR1068 4160 5 480.9 Continuous ELCT5-31 5* 0.05 ER-5WP NEMA 3R
NGR1069 4160 5 480.9 Continuous SE-CS10-2.5 5* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGR1070 4160 10 240.5 10 s SE-CS10-2.5 10* 0.05 ER-5KV NEMA 3R
NGR1071 4160 10 240.5 10 s SE-CS10-2.5 10* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGR1072 4160 10 240.5 Continuous SE-CS10-2.5 10* 0.05 ER-5KV NEMA 3R
NGR1073 4160 10 240.5 Continuous SE-CS10-2.5 10* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGR1074 4160 15 160.3 10 s SE-CS10-2.5 10* 0.05 ER-5KV NEMA 3R
NGR1075 4160 15 160.3 10 s SE-CS10-2.5 10* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGR1076 4160 15 160.3 Continuous SE-CS10-2.5 10* 0.05 ER-5KV NEMA 3R
NGR1077 4160 15 160.3 Continuous SE-CS10-2.5 10* 0.05 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGR1078 4160 25 96.2 10 s 5SHT-101-E 20** 1 ER-5KV NEMA 3R
NGR1079 4160 25 96.2 10 s 5SHT-101-E 20** 1 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
NGR1080 4160 25 96.2 Continuous 5SHT-101-E 20** 1 ER-5KV NEMA 3R
NGR1081 4160 25 96.2 Continuous 5SHT-101-E 20** 1 ER-5WP NEMA 3R; Weather
Protected Sensing Resistor
* Connect to SE-330 terminals 8 and 11
** Connect to SE-330 terminals 9 and 11
NGR SERIES – CANADA
80 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Dimensions and Mounting Diagrams
For 480 V NGR Systems:
For 600 V NGR Systems:
Proprietary and confidential: information contained in this drawing is the sole property of MegaResistors. Reproduction without explicit and written permission by MegaResistors is prohibited.
18.50 in
470mm
19.50 in
495mm
4 x .40in
10mm
BOTTOM VIEW
(MOUNTING DIMENSIONS)
22.00 in
559mm
22.00 in
559mm
12.44 in
316mm
ENNG=2-3R
(ISO VIEW)
TERMINAL BLOCK, 2 OR 3 POLE
FLAT HEAD SCREW
WIRE RANGE WITH BINDING SCREW #14 - #2 AWG, Cu
# DESCRIPTION QTY
1 ENCLOSURE, N2, NEMA 3R 1
2 ELEMENT, WIREWOUND/EDGEWOUND, X Ω X
3 BONDING LUG, SLU-70 1
4 TERMINAL BLOCK, 2 OR 3 POLE 1
1:10
A
ENNG=2-3R
NGR
G.C. Size
Units
Scale
Product Line
Drawing #
X V
X kV
X V L/N X A
X Ω
X
50-57 lbs
IN-LB Type 3R
Product Drawing
Revision #
Approval Date
0
Apr 12, 2019
Revision Date Apr 12, 2019 Drawn By P.K.
Part Number ENNG=2-3R Drawing Status
Drawing Type Mechanical
Reference
Voltage
Class
BIL Duty Cycle
Resistance
Current Env Rating
Weight
Notes
[1] Enclosure Material:
14 Ga. Steel [16 Ga. Top and
Side Covers]
Proprietary and confidential: information contained in this drawing is the sole property of MegaResistors. Reproduction without explicit and written permission by MegaResistors is prohibited.
27.25in
692mm
19.50in
495mm
4 x .40in
10mm
BOTTOM VIEW
(MOUNTING DIMENSIONS)
30.75 in
781mm
22.00 in
559mm
12.43
316
ENNG=2L-3R
(ISO VIEW)
TERMINAL BLOCK, 2 OR 3 POLE
FLAT HEAD SCREW
WIRE RANGE WITH BINDING SCREW #14 - #2 AWG, Cu
# DESCRIPTION QTY
1 ENCLOSURE, N2L, NEMA 3R 1
2 ELEMENT, WIREWOUND/EDGEWOUND, X Ω X
3 BONDING LUG, SLU-70 1
4 TERMINAL BLOCK, 2 OR 3 POLE 1
ENNG=2L-3R
NGR
Units
Product Line
Drawing #
X V L/N X A
in [mm] Type 3R
Product Drawing
Revision #
0
Part Number ENNG=2L-3R Drawing Status
Drawing Type Mechanical
Reference
Voltage
Current Env Rating
Notes
[1] Enclosure Material:
14 Ga. Steel [16 Ga. Top and
Side Covers]
Neutral Grounding Resistor System
© 2022 Littelfuse, Inc. 81
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/NGR-CA
NGR SERIES – CANADA
Neutral Grounding Resistor System
Specifications: 480 V NGR Systems
Voltage 480 V line-to-line, 277 V line-to-neutral
Let-Through Current 2 A or 5 A
Resistance 138.5 Ω (2 A) or 55.4 Ω (5 A)
Tolerance +/- 10 % resistance
Duty Cycle Continuous rated
Current Transformer ELCT5-31:
For use with SE-330 NGR Monitor
Turns Ratio: 100:1
Current Rating: 5:0.05 A
Primary Rating with SE-330: 5 A when
connected to terminals 8 and 11
GF Trip Range: 100 mA to 5 A
Window Diameter: 31 mm (1.22”)
Sensing Resistor ER-600VC; Optional installation in NEMA 4
enclosure for outdoor applications
Insulation Level 11 KV BIL
Temperature Rise 385 °C (725 °F)
Resistor Type Stainless steel wire wound
Dimensions H 324 mm (12.75”); W 558 mm (22.00”);
D 558 mm (22.00”)
Weight 23 kg (50 lbs)
Altitude 0–2000 masl
Enclosure Style NEMA 3R, galvanized steel
Finish Powder coated
Color ANSI 61 grey
Mounting Floor mount
Siesmic Bracing Included
Approvals cULus
Warranty 12 months in service or 18 months from the
date of shipment whichever occurs first
Specifications: 600 V NGR Systems
Voltage 600 V line-to-line, 347 V line-to-neutral
Let-Through Current 2 A or 5 A
Resistance 174 Ω (2 A) or 69 Ω (5 A)
Tolerance +/- 10 % resistance
Duty Cycle Continuous rated
Frequency 50–60 Hz
Current Transformer ELCT5-31:
For use with SE-330 NGR Monitor
Turns Ratio: 100:1
Current Rating: 5:0.05 A
Primary Rating with SE-330: 5 A when
connected to terminals 8 and 11
GF Trip Range: 100 mA to 5 A
Window Diameter: 31 mm (1.22”)
Sensing Resistor ER-600VC; Optional installation in NEMA 4
enclosure for outdoor applications
Insulation Level 11 KV BIL
Temperature Rise 385 °C (725 °F)
Resistor Type Stainless steel wire wound
Dimensions H 324 mm (12.75”); W 558 mm (22.00”);
D 558 mm (22.00”)
Weight 23 kg (50 lbs)
Altitude 0–2000 masl
Enclosure Style NEMA 3R, galvanized steel
Finish Powder coated
Color ANSI 61 grey
Mounting Floor mount
Siesmic Bracing Included
Approvals cULus
Warranty 12 months in service or 18 months from the
date of shipment whichever occurs first
82 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Neutral Grounding Resistor System
Specifications: 4160 V NGR Systems
Voltage 4160 V line-to-line, 2400 V line-to-neutral
Let-Through Current 5 A, 10 A, 15 A, or 25 A
Resistance 480 Ω (5 A), 240 Ω (10 A), 160 Ω (15 A),
or 96 Ω (25 A)
Tolerance +/- 10 % resistance
Duty Cycle Continuous-duty or 10-second-duty rating
Frequency 50-60 Hz
Current Transformer ELCT5-31:
For use with SE-330 NGR Monitor
Turns Ratio: 100:1
Current Rating: 5:0.05 A
Primary Rating with SE-330: 5 A when
connected to terminals 8 and 11
GF Trip Range: 100 mA to 5 A
Window Diameter: 31 mm (1.22”)
SE-CS10-2.5:
For use with SE-330 NGR Monitor
Turns Ratio: 200:1
Current Rating: 12.5:0.0625 A
Primary Rating with SE-330: 10 A when
connected to terminals 8 and 11
GF Trip Range: 200 mA to 10 A
Window Diameter: 63.5 mm (2.5”)
Turns Ratio: 100:5
Current Rating: 100:5 A
Primary Rating with SE-330: 20 A when
connected to terminals 9 and 11
GF Trip Range: 400 mA to 20 A
Window Diameter: 40 mm (1.56”)
Sensing Resistor ER-5KV
Optional ER-5WP for outdoor applications
Insulation Level 75 KV BIL
Temperature Rise Continuous-duty rated: 385 °C (725 °F)
10-second-duty rated: 760 °C (1400 °F)
Resistor Type Stainless Steel Wire Wound
Weights and Dimensions
5 A, continuous-duty rated: H 1226 mm (48.28”); W 1143 mm (45.00”);
D 940 mm (37.00”); 192 kg (424 lbs)
10 A, continuous-duty rated: H 1214 mm (47.78”); W 1270 mm (50.00”);
D 1143 mm (45.00”); 235 kg (519 lbs)
15 A, continuous-duty rated: H 1214 mm (47.78”); W 1270 mm (50.00”);
D 1143 mm (45.00”); 258 kg (568 lbs)
25 A, continuous-duty rated: H 1283 mm (50.50”); W 1575 mm (62.00”);
D 1143 mm (45.00”); 320 kg (705 lbs)
5 A, 10-second-duty rated: H 749 mm (29.50”); W 1143 mm (45.00”);
D 940 mm (37.00”); 136 kg (300 lbs)
10 A, 10-second-duty rated: H 749 mm (29.50”); W 1143 mm (45.00”);
D 940 mm (37.00”); 136 kg (300 lbs)
15 A, 10-second-duty rated: H 749 mm (29.50”); W 1143 mm (45.00”);
D 940 mm (37.00”); 136 kg (300 lbs)
25 A, 10-second-duty rated: H 749 mm (29.50”); W 1143 mm (45.00”);
D 940 mm (37.00”); 136 kg (300 lbs)
Altitude 0-1000 masl
Enclosure Style NEMA 3R, galvanized steel
Finish Powder coated
Color ANSI 61 grey
Mounting Floor mount
Siesmic Bracing Included
Approvals cULus
Warranty 12 months in service or 18 months from
the date of shipment, whichever
occurs first
Accessories
SE-330 Neutral Grounding Resistor Monitor
Advanced ground-fault and neutral-grounding
resistor monitoring relay that measures neutral
current, neutral-to-ground voltage, and neutral-toground resistance.
NGRM-ENC Enclosed Neutral Grounding
Resistor (NGR) Monitor
Type 4X enclosure housing a Littelfuse Startco
SE-330 Neutral Grounding Resistor Monitor and
optional accessories that include a 480/600 V
control power transformer (CPT), faulted-phase
indication (FPI; implemented with an EL3100
Ground-Fault & Phase-Voltage Indicator), earthleakage panel meter, pulse-enable control, and
mounting options. Appropriate fusing is included
and field wiring is to terminal blocks.
Custom NGR Systems
Additional custom NGR systems are also available from
Littelfuse. For NGR systems not listed on this sheet please
contact Littelfuse by emailing NGRquotes@Littelfuse.com
Littelfuse.com/NGR-CA
NGR SERIES – CANADA
© 2022 Littelfuse, Inc. 83
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/ngrm-enc
Neutral Grounding Resistor Monitoring
Description
The NGRM-ENC Enclosed Neutral Grounding Resistor (NGR)
Monitor series is a Type 4X enclosure housing a Littelfuse
Startco SE-325 or SE-330 Neutral Grounding Resistor Monitor
and optional accessories that include a 480/600-V control
power transformer (CPT), faulted-phase indication (FPI;
implemented with an EL3100 Ground-Fault & Phase-Voltage
Indicator), earth-leakage panel meter, pulse-enable control,
and mounting options. Appropriate fusing is included and field
wiring is to terminal blocks.
NGRM-ENC SERIES
NGRM-ENC
NGR
L2
CT
L1
SE-330
SERIES
ER SERIES
(Sensing Resistor)
(NGR Monitor)
EL3100
NGRM-ENC
(SE-330 with voltage indication shown)
DN
DA
DB
DC
NGR Assembly
(ordered separately)
Simplified Circuit Diagram
Ordering Information
The following options are available with a faster shipping time:
ORDERING NUMBER PROTECTION
RELAY OPTION
NGR MONITOR
MOUNTING OPTION
AMMETER & PULSE
CONTROL OPTION COMMS CONTROL-POWER
TRANSFORMER OPTION
NGRM-ENC-000-01 SE-325 Surface mounted None None CPT
NGRM-ENC-200-01 SE-330 (K4=NO) Surface mounted None None CPT
NGRM-ENC-201-01 SE-330 (K4=NO) Panel mounted None None CPT
NGRM-ENC-201-11 SE-330 (K4=NO) Panel mounted Ammeter None CPT
NGRM-ENC-230-01 SE-330 (K4=NO) Surface mounted None Ethernet/2 RJ45 ports CPT
NGRM-ENC-231-01 SE-330 (K4=NO) Panel mounted None Ethernet/2 RJ45 ports CPT
Options
SE-325 Neutral Grounding Resistor Monitor
Measures current and voltage in a transformer
or generator neutral-to-ground connection and
continuity of the neutral-grounding resistor.
SE-330 Neutral Grounding Resistor Monitor
Advanced ground-fault and neutral-grounding
resistor monitoring relay that measures neutral
current, neutral-to-ground voltage, and neutral-toground resistance.
EL3100 Ground-Fault & Phase-Voltage Indicator
Three panel-mounted LEDs indicate the
ground-faulted phase.
Panel Meter
Panel-mounted meter displays earth leakage
current as a percentage of the ground-faultCT-primary rating.
RK-332/RK-302 Remote Indication and Reset
Panel-mounted remote indication and reset
assemblies are included with SE-325 and
surface-mounted SE-330 configurations.
84 © 2022 Littelfuse, Inc.
Protection Relays
RESISTANCE GROUNDING/NGR MONITORING
3
Littelfuse.com/ngrm-enc
Specifications
Enclosure Polyester, Lockable. SE-330 panel-mount options
are rated to IP65. All other options are rated to
Type 4X.
Dimensions H 454 mm (17.9”); W 406 mm (16”);
D 264 mm (10.4”)
Clearance required to open
SE-IP65CVR-G 112 mm (4.4”)
Approvals CCSAUS
Warranty 1 year
Ordering Information
PROTECTION RELAY
OPTION
NETWORK
COMMUNICATIONS
OPTION
NGR MONITOR
MOUNTING OPTION
AMMETER &
PULSE CONTROL
OPTION
CONTROL-POWER
TRANSFORMER
OPTION
NGRM-ENC- X X X – X X
0=SE-325
1=SE-325 & voltage
indication(1)
2=SE-330 (N.O. K4)
3=SE-330 (N.O. K4) & voltage
indication(1)
4=SE-330 (N.C. K4)
5=SE-330 (N.C. K4) & voltage
indication(1)
6=SE-330HV (N.O. K4)
7=SE-330HV (N.O. K4) &
voltage indication(1)
8=SE-330HV (N.C. K4)
9=SE-330HV (N.C. K4) &
voltage indication(1)
0=No network communications
1=DeviceNet(2)
3=Ethernet, dual RJ45(2)
4=Ethernet, 1 RJ45 & 1 fiber(2)
5=Ethernet, dual fiber(2)
6=IEC 61850, dual RJ45(2)
7=IEC 61850, 1 RJ45 & 1 fiber(2)
8=IEC 61850, dual fiber(2)
0=Surface-mounted
NGR monitor(4)
1=Panel-mounted
NGR monitor(5)
0=No ammeter
1=Earth-leakage panel
meter(2)
2=Earth-leakage panel
meter & pulse-enable
switch(3)
0=No CPT
1=480/600-V CPT(1)
Neutral Grounding Resistor Monitoring
NGRM-ENC SERIES
Note (1) - Includes fuses, (2) - SE-330 models only, (3) - SE-330 models only, excluding SE-330HV
models, (4) - Includes panel-mounted indication & reset, and USB connector for SE-330 models,
(5) - SE-330 models only; includes IP65 hinged transparent cover
Protection Relays
© 2022 Littelfuse, Inc. 85
4FEEDER PROTECTION
Littelfuse.com/relayscontrols
For More Information…
and to download datasheets and manuals on our
Feeder Protection Relays, click Technical Resources at
Littelfuse.com/FeederProtection
FEEDER PROTECTION
Protect feeder circuits from overcurrents, earth faults, phase loss and other
detrimental conditions in critical applications and processes.They provide
essential data for predictive and preventive maintenance, extending the life
of equipment, enhancing safety and maximizing efficiency.
FPU-32 Series Feeder Protection Unit ........................................... 86
FPS Series Feeder Protection System...................................... 87
Protection Relays
86 © 2022 Littelfuse, Inc.
4 RFEEDER PROTECTION
Littelfuse.com/fpu-32
FPU-32 SERIES (PGR-7200)
Feeder Protection Unit
Description
The FPU-32 Feeder Protection Unit provides integrated protection,
metering, and data-logging functions. It is an excellent choice for
retrofitting and upgrading older relays because of its compact
size and ability to use existing CTs. The FPU-32 is used to protect
distribution feeders in processing, manufacturing, petroleum,
chemical, and wastewater treatment facilities.
MPU-CIM
(Current Input Module)
(Feeder Protection Unit)
FPU-32
PHASE CT
PHASE CT
CT PHASE CT GF
L2
L1
NOTE: The FPU-32 consists of the Feeder Protection Unit (pictured above)
and the MPU-CIM Current Input Module (not pictured).
ORDERING NUMBER COMMUNICATIONS
FPU-32-00-00 TIA-232
FPU-32-01-00 TIA-232 & RS-485
FPU-32-02-00 TIA-232 & DeviceNet™
FPU-32-04-00 TIA-232 & Ethernet
NOTE: One of the following is required: MPU-CIM-00-00 Current Input Module, or
MPU-CTI-RT-00 Current Input Module with ring-tonque terminals.
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS
IEC & IEEE overcurrent
protection curves
Definite and inverse time settings for system
coordination; prevents catastrophic failures
Two setpoint groups Create distinctive settings for maintenance or for
two different loads
Reduced overcurrent
mode
Maintenance mode setting to reduce the risk of
arc-flash hazards
Data logging On-board 100-event recorder and remote data
logging helps with system diagnostics
Overload Thermal protection for connected load
Phase loss/Phase
reverse (current) Detects unhealthy supply conditions
Unbalance (current) Prevents overheating due to unbalanced phases
Communications Remotely view measured values, event records &
reset trips
Features & Benefits
A B
ACCESSORIES REQUIREMENT
Phase CTs Recommended
Ground-Fault CT Optional
MPU-16A-Y92A-96N Optional
Specifications
Protective Functions
(IEEE #)
Input Voltage 65-265 Vac, 30 VA; 80-275 Vdc, 25 W
Power-Up Time 800 ms at 120 vac
Ride-Through Time 100 ms minimum
24-Vdc Source 400 mA maximum
AC Measurements True RMS and DFT, Peak 32 samples/cycle and
positive and negative sequence of fundamental
Frequency 50, 60 Hz
Output Contacts Three Form C
Approvals CSA certified, CE, C-Tick (Australian), UL Recognized
Communications TIA-232 (standard); TIA-485, DeviceNet™, Ethernet (optional)
Analog Output 4-20 mA, programmable
Conformally Coated Standard feature
Warranty 10 years
Mounting
(Control Unit) Panel (standard)
Surface (with MPU-32-SMK converter kit)
(Current Input Module) DIN, Surface
Phase Current Transformers
Phase CTs are required to detect
phase currents.
Ground-Fault Transformer
Zero-sequence current transformer detects
ground-fault current. Available with 5-A and 30-A
primary ratings for low-level pickup.
B
Accessories
A
Overload (49, 51)
Phase sequence (46)
Unbalance (46)
Phase loss (46)
Definite-time overcurrent (50, 51)
Inverse-time overcurrent (50, 51)
Ground fault (50G/N, 51G/N)
RTD/PTC temperature (49)
Feeder Protection–Standard
Protection Relays
© 2022 Littelfuse, Inc. 87
4FEEDER PROTECTION
Littelfuse.com/fps
Feeder Protection–Advanced
FPS SERIES
Feeder Protection System
1
2
Description
The FPS Feeder Protection System monitors voltage and current
to provide a comprehensive package of 17 protective functions.
The FPS is a modular system with integrated protection, breaker
control, metering, and data-logging functions.
1 Operator Interface (FPS-OPI)
g Large, bright, 4 x 20 vacuum-fluorescent display
g Display metered values
g Access set points
g Powered by Control Unit
g Panel mount or attach directly to Control Unit
g Remote mounting (1.2 km or 4000 ft maximum loop length)
g 1/2 DIN size
g Hazardous-location certified
2 Control Unit (FPS-CTU)
g Current inputs—5-A or 1-A secondary phase
current transformers
g Voltage inputs—up to 600 V without PTs
g Earth-leakage input—5-A or 1-A secondary or
sensitive transformer
g 8 digital inputs, 5 relay outputs, 1 analog input and output
g 24-Vdc supply for OPI and RTD modules, and for digital inputs
g IRIG-B time-code input
g 1/2 DIN size, surface mount
g RS-485 network communications (Standard)
g DeviceNet™, Profibus®, or Ethernet communications available
Phase Current Transformers
Phase CTs are required to detect
phase currents.
Ground-Fault Current Transformer
Zero-sequence current transformer detects
ground-fault current. Available with 5-A
and 30-A primary ratings for low-level pickup.
MPS-RTD Temperature Input Module
Optional module provides 8 inputs to connect
Pt100, Ni100, Ni120, and Cu10 RTDs.
SE-IP65CVR-M Cover
Optional gasketed, transparent cover for
limited access and IP65 protection for an
Operator Interface Module.
B
C
Accessories
A
ACCESSORIES REQUIREMENT
FPS-OPI-01-00 Recommended
SE-IP65CVR-M Optional
Phase CTs Required
Ground-Fault CT Recommended
MPS-RTD-01-00 Optional
ORDERING NUMBER COMMUNICATIONS
FPS-CTU-01-00 RS-485
FPS-CTU-02-00 RS-485 & DeviceNet™
FPS-CTU-03-00 RS-485 & Profibus®
FPS-CTU-04-00 RS-485 & Ethernet
Ordering Information
Simplified Circuit Diagram
PHASE CT
PHASE CT
PHASE CT GF CT
L2
FPS-CTU L1
FPS-OPI
(Control Unit)
(Operator Interface)
1
2
A B
Protection Relays
88 © 2022 Littelfuse, Inc.
4 RFEEDER PROTECTION
Littelfuse.com/fps
Feeder Protection–Advanced
Wiring Diagram
PHASE VOLTAGES
FPS-CTU
CONTROL UNIT
RELAY
OUTPUTS
I/0 MODULE
DIGITAL
INPUTS
4-20 mA
ANALOG
INPUT
+
ANALOG
OUTPUT
4-20 mA
+
39 40
53 52
43 51 ...... 5 16 ...... 1 2
20 17 60 56 ...... 33 22
CONTROL
POWER
RS-485
35 37 ......
30 29 27 26 23 22
PHASE CURRENT
TRANFORMERS
GROUND-FAULT
CURRENT
TRANSFORMER
OPERATOR INTERFACE
FPS-OPI
(recommended) (required) (recommended)
RTD MODULE
MPS-RTD
(optional)
A B
C
1
2
Specifications
Protective Functions
(IEEE Device Numbers)
Input Voltage 65-265 Vac, 25 VA; 80-275 Vdc, 25 W
Power-Up Time 800 ms at 120 Vac
Ride-Through Time 100 ms minimum
24-Vdc Source 100 mA maximum
AC Measurements True RMS and DFT, Peak, 16 samples/cycle, and
positive and negative sequence of fundamental
Frequency 50 or 60 Hz
Inputs Phase current, Earth-leakage current, Phase voltage,
7 digital, 1 analog
Output Contacts 5 contacts — See Product Manual
Approvals CSA certified, C-Tick (Australian)
Communications Allen-Bradley® DFI and Modbus® RTU (Standard);
DeviceNet™, Profibus®, Ethernet (Optional)
Conformal Coating Standard feature
Warranty 10 years
Mounting:
Control Unit Surface
Operator Interface Panel, Control-Unit mounted
Overload (49, 51)
Phase reverse (current) (46)
Overfrequency (81)
Overcurrent (50, 51)
Underfrequency (81)
Ground fault (50G/N, 51G/N)
Unbalance (voltage) (47)
RTD temperature (38, 49)
Unbalance (current) (46)
Phase loss (voltage) (47)
Overvoltage (59)
Phase loss (current) (46)
Undervoltage (27)
Phase reverse (voltage) (47)
Power factor (55)
Features & Benefits
FEATURES IEEE # BENEFITS
Overload 49, 51 Long-time overcurrent provides thermal protection for feeder or load
Inverse-time overcurrent 50, 51 Coordination using IEEE and IEC Curves
Definite-time overcurrent 50, 51 Instantaneous overcurrent to detect catastrophic failure
Current unbalance/
Phase loss/Phase reverse 46 Detects an open or high-impedance phase
Ground fault 50G/N, 51G/N Inverse and definite time. Early insulation-failure detection.
RTD temperature 38, 49 Optional protection (MPS-RTD module) for load-temperature monitoring
Overvoltage 59 Limits stress to insulation
Undervoltage 27 Detects a damaging brown-out condition
Voltage unbalance 47 Detects unhealthy supply voltage
Two setting groups Minimizes Arc-Flash hazards during maintenance
Breaker control Allows local and remote operation; reduces component count
Metering Displays the measured and calculated parameters
Data logging On-board 64-event recorder helps with system diagnosis
Communications Remotely view measured values, event records, & reset trips
Conformal coating Internal circuits are conformally coated to protect against corrosion and moisture
FPS SERIES
Feeder Protection System
© 2022 Littelfuse, Inc. 89
5ARC-FLASH PROTECTION
Protection Relays
Littelfuse.com/relayscontrols
For More Information…
and to download our White Paper on
Key Considerations for Selecting an
Arc-Flash Relay or our Arc-Flash Energy
Reduction Workbook, visit
Littelfuse.com/ArcFlash
ARC-FLASH PROTECTION
Rapidly detects developing Arc-Flash incidents and sends a trip signal to
interrupt power before significant damage occurs.
D0920 Arc Detection Unit ........................................... 90
PGR-8800 Series Arc-Flash Relay................................................ 91
AF0500 Series Arc-Flash Relay................................................ 93
AF0100 Series Arc-Flash Relay................................................ 95
A0220 Series Light Sensor ..................................................... 96
PGA-1100 Diode Logic....................................................... 97
90 © 2022 Littelfuse, Inc.
5 ARC-FLASH PROTECTION
Protection Relays
Littelfuse.com/d0920
D0920 ARC DETECTION UNIT
Arc Detection Unit
Installation Diagram
Description
The D0920 Arc-Flash relay provides a simple and cost effective
solution for Arc-Flash monitoring. Two light sensors can be
connected directly to one relay.
Light Sensors react to light and have a 180º detection zone.
Sensors are supplied with 10 or 15 m of cable. 1-2 sensors are
recommended per cubicle or drawer.
Specifications
Supply Voltage 230 V AC +15,-30%
Thyristor Output 325 V DC from charged capacitor, nominal
energy 3.5 J
Sensitivity Adjustable 2 - 24 klux
Number of Sensors Max. 2
Response Time Less than 1 ms
Power Consumption 3.5 VA
Ambient Temperature –25°C to 70°C
Dimensions H 90 mm (3.5”); W 105 mm (4.1”); D 61 mm (2.4”)
Certification CE, CCC
ORDERING NUMBER DESCRIPTION
D0920.0060
230 V AC +15, -30%, remains powered on
after trip, slide switch instead of key switch,
electronic reset button instead of mechanical
reset button, CCC approved
Ordering Information
FEATURES BENEFITS
Compact module Fits into wide range of Arc-Flash applications
Trip time <1 ms Limits Arc-Flash damage and risk of injury
Two optical sensor
cable lengths Point sensors with 10 or 15 m of cable
Inputs for two
sensors Single Arc-Flash relay can monitor 2 sensors
Adjustable light
sensitivity
Allows operation in bright environments and maximum
sensitivity in dark environments
Service mode Allows relay and sensor test without tripping system
Features & Benefits
ACCESSORIES REQUIREMENT
A0033.0010 Detector cable
2 x 0.25 mm2
w/screen. 100 m Optional
A0220.0010 Arc Detector V-Type; 10 m cable Required: At least one sensor
A0220.0020 Arc Detector V-Type; 15 m cable per monitored zone
PGA-1100/D1100 Diode Logic Unit Optional
A0220 Light Sensors
Line-of-sight light sensor detects an arc as small
as 3 kA within a 2-m half-sphere. Available with
10 or 15 m cable.
PGA-1100/D1100 Diode Logic Unit
For tripping one circuit breaker with multiple
D0920 Relays
Accessories
A
Install sensors in line
of sight to possible arc faults.
Arc-Flash Monitoring
© 2022 Littelfuse, Inc. 91
5ARC-FLASH PROTECTION
Protection Relays
Littelfuse.com/pgr-8800
Description
The PGR-8800 Series is a microprocessor-based relay that
limits arc-fault damage by detecting the light from an arc
flash and rapidly tripping. Phase-current-transformer inputs
are provided for current-constrained arc-flash protection and,
when so equipped, a programmable definite-time overcurrent
function can be enabled. An optical sensor on the PGR-8800
and adjustable trip level reduce the chance of nuisance tripping
by setting a threshold for ambient light. Sensors, inputs, and
connections are monitored to ensure fail-safe operation. A
secondary solid-state trip circuit provides a redundant trip path.
A USB port is used for configuration and access to event logs
and graphs.
Optical Sensors
The PGR-8800 accepts both PGA-LS10 and PGA-LS20/
PGA-LS30 optical sensors, designed to collect light over a
wide angle and with high sensitivity. For fast fault location,
front-panel and sensor LED’s indicate sensor health and
which sensor detected an arc fault.
Sensor Placement
The PGR-8800 Arc-Flash Relay and sensors are easily
installed in retrofit projects and new switchgear with little or
no re-configuration. Even elaborate systems with multiple
power sources take minutes to configure using the relay’s
built-in USB interface software.
Generally, it is recommended to mount 1 or 2 sensors per
cubicle to cover all horizontal and vertical bus bars, breaker
compartments, drawers, and anywhere that there is potential
for an arc-fault. Threading a fiber-optic sensor through
the cabinets and in areas where point-sensor coverage is
uncertain results in complete coverage and an added level
of redundancy. Even if policy is to only work on de-energized
systems, all maintenance areas should be monitored to
prevent potential damage and additional cost. At least one
sensor should have visibility of an arc fault if a person blocks
the other sensor(s).
Simplified Circuit Diagram
PGA-LS10
(Point Sensor)
PGA-LS20/
PGA-LS30
(Fiber-Optic Sensor)
PGA-1100
(Diode Logic Unit)
(Optional)
24 Vdc Battery
Backup
(Optional)
(Recommended)
(Arc-Flash Protection Relay)
PGR-8800
Trip
5-A-SECONDARY PHASE CT’s
L2
L1
A
B
C
A
B
PGR-8800 SERIES (D1000)
Arc-Flash Relay
C
D
*At least one sensor is required. However, the exact number of sensors for proper coverage
depends on the application.
D D D
Local Circuit Breaker
For detailed wiring diagram, see adjacent page.
Ordering Information
ORDERING NUMBER DESCRIPTION
PGR-8800-00 (UL, CE, CSA, RCM) Arc-Flash Relay
PGR-8800-00-CC (UL, CE, CSA, RCM) Arc-Flash Relay,
Conformally Coated
ACCESSORIES REQUIREMENT
PGA-LS10 Required*
PGA-LS20, PGA-LS30 Required*
PGA-1100 Optional
Current Transformer Recommended
Arc-Flash Monitoring
92 © 2022 Littelfuse, Inc.
5 ARC-FLASH PROTECTION
Protection Relays
Littelfuse.com/pgr-8800
Wiring Diagram
FEATURES BENEFITS
Arc-Flash trip time <1 ms Limits arc-flash damage and risk of injury
Multiple sensors (up to 24) Single module can monitor 6 sensors. Up to 4 PGR-8800 units can be linked into one system
Fail-safe system Continuous monitoring of optical sensors and inputs ensures protection
Redundant trip circuit Solid-state backup arc-detection circuit adds a second layer of safety
Adjustable light sensitivity Allows for operation in bright environments and maximum sensitivity in dark environments
LED indication (on unit and each sensor) 18 LEDs provide at-a glance status for module and I/O state
Current detection Phase-CT inputs provide overcurrent protection and prevent nuisance trips
Optical detection Point and fiber-optic sensors provide wide detection area with sensor health trip indication
Digital inputs (6) Two each: remote trip, inhibit, and reset inputs
Service mode Allows for system test without tripping
Trip coil contact Solid-state 24-300 Vdc/24-300 Vac IGBT
Indication contacts Form C and status outputs
USB interface Data logging and configuration software uses a USB interface with no drivers or software installation
Built-in sensor Can be used in single-sensor systems, as a seventh sensor, and for calibration
Universal power supply/Battery backup 100-240 Vac, 14-48 Vdc, or 110-250 Vdc supply accepted. Ability to charge and run off an external, user-supplied 24 Vdc battery
Data logging On-board event recorder helps with system diagnostics
Modbus Remotely view measured values, event records & reset trips
Upstream Tripping Ability to trip upstream device if the local breaker fails to clear the fault
Features & Benefits
PGR-8800 SERIES (D1000)
1
31 36 37 38 39 45 46 47 48 49 50 51 52 53 54 55 56 57 59 60
4 ........ 5 8 ........ 9 12 ........ 13 16 ........ 17 20 ........ 21 24 ........
............. .....................
25 26 27 28 29 30
STATUS STATUS STATUS
SERVICE TRIPPED TRIP COIL
LINK
ONLINE
+ –
CONTROL POWER
and BATTERY
DIGITAL INPUTS
ARC-FLASH RELAY
PGR-8800 SERIES
ARC-FLASH RELAY
PGR-8800
(optional)
DIODE LOGIC
UNIT
PGA-1100
(optional)
ARC-FLASH RELAY
PGR-8800
(optional)
ARC-FLASH RELAY
PGR-8800
(optional)
PHASE CT
(recommended)
PHASE CT
(recommended)
PHASE CT
(recommended)
PGA-LS10
PGA-LS20 or PGA-LS30
OPTICAL
SENSOR
PGA-LS10
PGA-LS20 or PGA-LS30
OPTICAL
SENSOR
PGA-LS10
PGA-LS20 or PGA-LS30
OPTICAL
SENSOR
PGA-LS10
PGA-LS20 or PGA-LS30
OPTICAL
SENSOR
PGA-LS10
PGA-LS20 or PGA-LS30
OPTICAL
SENSOR
PGA-LS10
PGA-LS20 or PGA-LS30
OPTICAL
SENSOR
Littelfuse reserves the right to make product changes, without notice. Material in this document is as accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information.
NOTE (1) - Contact Littelfuse for trip coil voltages higher than 300 Vdc/Vac.
Specifications
IEEE Device Numbers Overcurrent (50), Arc Flash (AFD)
Input Voltage 100-240 Vac, 14-48 Vdc, and 110-250 Vdc
Dimensions H 130 mm (5.1”); W 200 mm (7.9”); D 54 mm (2.1”)
Optical Trip Settings 9-25 klux, 800 μs-20 s
Current Trip Setting (A) Programmable
Indication Contact Mode Fail-safe
Trip Coil Voltage(1) 24-300 Vdc, 24-300 Vac
Trip Coil Contact Mode Selectable fail-safe or non-fail-safe
Redundant Trip Circuit Standard feature
Input Monitoring Standard feature
USB Interface Standard feature
Trip, Reset, Service Buttons Standard feature
Expandable System Link up to 4 PGR-8800 units
Warranty 5 years
Mounting Surface, DIN (with D0050 adapter clips)
Approvals UL, CE, CSA, RCM, FCC, DNV type approval,
ABS type approval
PGA-LS10 Point Sensor
Line-of-sight light sensor detects an arc as small as
3 kA within a 2-m half-sphere. Sensor health and
trip indication. Dimensions: See PGR-8800 Manual
PGA-LS20/PGA-LS30 Fiber-Optic Sensor
360° light sensor for tricky installations with many
shadows or to run along bus bars. Sensor health and
trip indication. Dimensions: See PGR-8800 Manual
PGA-1100 Diode Logic Unit
This module allows multiple PGR-8800 relays to
trip the same breaker, for example an upstream or
a tie-breaker. Dimensions: H 80mm (3.15”);
W 20mm (0.79”); D 70mm (2.76”)
Current Transformers
Eliminate nuisance arc-flash trips and use for
overcurrent protection.
Accessories
A
B
D
C
Arc-Flash Monitoring
© 2022 Littelfuse, Inc. 93
5ARC-FLASH PROTECTION
Protection Relays
Littelfuse.com/af0500
Description
The AF0500 is a microprocessor-based arc-flash relay that
limits arc-fault damage by detecting the light from an arc flash
and rapidly tripping the feeder breaker. The unit is well suited
for switchgear, transformer and power converter applications.
Sensors, inputs, and connections are health monitored
to ensure fail-safe operation. A secondary solid-state trip
circuit provides a redundant trip path. A USB port is used for
configuration and access to event logs.
AF0500 includes an Ethernet interface and supports Modbus®
TCP communication. Zone tripping, upstream breaker tripping
and tie breaker tripping applications can be easily configured.
A number of control inputs allows interconnection of multiple
AF0500 units to form a system.
Optical Sensors
The AF0500 accepts both PGA-LS10 point sensors and
PGA-LS20/PGA-LS30 fiber-optical sensors. Thus any
combination of fiber or point sensors is supported.
For fast fault location, front-panel and sensor LEDs indicate
sensor health and which sensor detected an arc fault.
Sensor Placement
The AF0500 Arc-Flash Relay and sensors are easily installed
in retrofit projects and new switchgear with little or no
re-configuration. Simple applications work straight out of the
box with no need of PC configuration. More complex systems
with multiple power sources are configured using the relay’s
built-in USB interface software.
Generally, it is recommended to mount 1 or 2 sensors per
cubicle to cover all horizontal and vertical bus bars, breaker
compartments, drawers, and anywhere that there is a
risk for an arc fault. Threading a fiber-optic sensor through
the cabinets and in areas where point-sensor coverage is
uncertain results in complete coverage and an added level
of redundancy. Even if policy is to only work on de-energized
systems, all maintenance areas should be monitored to
prevent potential damage and additional cost.
Ordering Information
AF0500 SERIES
Arc-Flash Relay
ORDERING NUMBER DESCRIPTION
AF0500-00 Arc-Flash Relay
AF0500-00-CC Arc-Flash Relay, Conformally Coated
FEATURES BENEFITS
4 arc sensor inputs Supports both point and fiber sensors
Arc-Flash trip time <1ms Limits arc-flash damage and risk of injury
2 IGBT high speed trip
outputs
Supports applications such as upstream
breaker tripping or tie breaker tripping
Universal Power Supply 100-240 Vac, 24-48 Vdc, or 110-250
Vdc supply
Fail-safe system Continuous monitoring of optical sensors
and inputs ensures protection
LED indication
(on unit and each sensor)
Trip and sensor status indicated both on
relay and sensors
Discrete wire networking Multiple AF0500 units can be
interconnected to form a system
USB interface
Data logging and configuration software
uses a USB interface with no drivers or
software installation
Data logging On-board event recorder for system
diagnostics (2048 log lines)
Ethernet interface Modbus® TCP communication
Features & Benefits
Arc Flash
Fiber-Optic Sensor
Point Sensors
ACCESSORIES REQUIREMENT
PGA-LS10 Required*
PGA-LS20, PGA-LS30 Required*
PGA-1100 Optional
Arc-Flash Monitoring
94 © 2022 Littelfuse, Inc.
5 ARC-FLASH PROTECTION
Protection Relays
Littelfuse.com/af0500
AF0500 SERIES
Applications
Zone Tripping
AF0500 can trip 2 separate zones. Sensors can be assigned
to the zones individually through PC configuration.
Upstream Breaker Tripping
In case of failure of the local circuit breaker to open, another
trip command is sent after a short delay to an upstream
breaker to clear the fault.
Upstream Breaker
Local Breaker
Incoming
Feeder
Sensor
Sensor
Sensor
Sensor
PGA-LS10 Point Sensor
Line-of-sight light sensor detects an arc as small
as 3 kA within a 2-m half-sphere. Includes Sensor
health and trip indication.
PGA-LS20/PGA-LS30 Fiber-Optic Sensor
360° light sensor to run along bus bars. Sensor
health and trip indication.
PGA-1100 Diode Logic Unit
This module allows multiple arc-flash relays to
trip a common breaker, for example a tie-breaker.
Accessories
Specifications
Power Supply
Universal 100 to 240 Vac (+10%, -15%) 50/60 Hz, 20 VA,
110 to 250 Vdc (+10%, -20%) 8 W
Low Voltage 24 to 48 Vdc (+10%, -20%), 4 W
Sensor Inputs 4 light sensor inputs for PGA-LS10, PGA-LS20
and PGA-LS30 sensors
Trip Outputs 2 IGBT switches
UL Rating 120/240 Vac, 1800 VA, 0.75 A maximum continuous,
125/250 Vdc, 138 VA, 0.75 A maximum continuous
Supplemental Rating
Make/Carry 30 A for 0.2s
Voltage Rating 24 to 300 Vac, 24 to 300 Vdc
Current Rating 20 A for 2 s, 10 A for 5 s
Communication Ethernet, 2 ports with internal Ethernet switch,
Modbus® TCP
Dimensions H 130 mm (5.1”); W 200 mm (7.9”); D 54 mm (2.1”)
Shipping Weight 0.9 kg (2 lb)
Operating Temp. –40°C to +70°C (–40°F to 158°F)
Approvals UL Listed (UL508), CE, RCM, FCC, CSA
Warranty 5 years
Mounting Surface, DIN (with optional D0050 adapter clips)
Zone 1 Zone 2
Sensor
Sensor
Sensor
Sensor
Tie Breaker Tripping
In case of an arc in one section of the switchboard, the
AF0500 can trip both the incoming feeder and the tie breaker
simultaneously. Thus the affected part of the switchboard is
isolated from the non-affected part.
Incoming
Feeder
Incoming
Feeder
Bus Tie
Sensor
Sensor
Sensor
Sensor
Sensor
Sensor
Sensor
Sensor
Arc-Flash Monitoring
© 2022 Littelfuse, Inc. 95
5ARC-FLASH PROTECTION
Protection Relays
Arc-Flash Monitoring
Description
The AF0100 Series arc-flash relay is a cost-effective solution
that reduces arc-fault damage by detecting the light from
an arc flash and rapidly tripping. Two remote light sensors
can be connected to one relay and multiple AF0100 and/or
AF0500 relays can be connected to monitor additional sensors,
providing complete coverage for a wide range of applications.
The compact, DIN-rail or surface-mountable body makes this an
ideal solution for equipment manufacturers.
Two isolated Form-C contacts are provided for applications with
multiple devices that must be tripped. This is especially useful
for generator applications where the generator and breaker
need to be tripped in case of an arc flash.
The AF0100 accepts PGA-LS10 point sensors and PGA-LS20/
PGA-LS30 fiber-optic sensors in any combination. Sensor
health is continuously monitored to ensure fail-safe operation.
A solid-state redundant trip circuit provides an internal fail-safe
mechanism and fast arc-flash response during power up.
Front-panel and sensor LEDs indicate sensor health and
fault location.
Features & Benefits
FEATURES BENEFITS
Compact Fits into a wide range of arc-flash applications
Two optical
sensor types
Point sensors or fiber-optic sensors can be used
in any combination for coverage flexibility
Dual sensor inputs One relay can monitor two arc-flash sensors
Adjustable light
sensitivity
Allows for operation in bright environments and
maximum sensitivity in dark environments
Discrete wire
networking
Multiple AF0100 or AF0500 units can be
interconnected to form a system
Fail-safe system Continuous monitoring of optical sensors and
inputs ensures protection
USB interface Configuration software is easy to use with no
drivers or software installation
Unit health Ensures continuous protection with self
diagnostic and remote unit-healthy indication
LED Indication Trip and sensor status indication both on relay
and sensors
Arc-Flash Relay
Simplified Circuit Diagram
PGA-LS10
(Point Sensor)
PGA-LS20/
PGA-LS30
(Fiber-Optic Sensor)
24-48 Vdc
Supply
or
100-240 Vac/Vdc
Supply
Digital I/O Connection to other AF0100 or AF0500
(Arc-Flash Protection Relay)
AF0100
Trip 1 Trip 2 Unit
Healthy L2
L1
–
+
Ordering Information
ORDERING NUMBER DESCRIPTION
AF0100-00 Arc-Flash Relay, Universal Supply
AF0100-10 Arc-Flash Relay, 24-48 Vdc
PGA-LS10 Point Sensor
Line-of-sight light sensor detects an arc as small
as 3 kA within a 2-m half-sphere. Includes sensor
health and trip indication.
PGA-LS20/PGA-LS30 Fiber-Optic Sensor
360° light sensor to run along bus bars. Includes
sensor health and trip indication.
Accessories Specifications
Input Voltage
AF0100-00 100-240 Vac/Vdc, 24-48 Vdc
AF0100-10 24-48 Vdc
Dimensions H 90 mm (3.5”); W 128 mm (5.0”);
D 60 mm (2.4”)
Trip, Error Relays Form C, 250 Vac/30 Vdc, 6 A resistive
Sensitivity 10-25 klux programmable
Mounting Surface, DIN rail
Operating Temperature -40°C to +70°C (-40°F to 158°F)
Shipping Weight 1.0 kg (2.2 lb)
Certifications Contact factory
Warranty 5 years
A
B
A
B
AF0100 SERIES
Littelfuse.com/af0100
For dimensional drawing see: Appendix page 510, Figure 11.
96 © 2022 Littelfuse, Inc.
5 ARC-FLASH PROTECTION
Protection Relays
Littelfuse.com/a0220
Arc Detectors
Description
The A0220 Arc Detector is a photo electric sensor. It has a
sensitive area of 180°. Sensor signal is a mA current signal of
0.5 mA/klux. The sensor includes 10 m of shielded two-wire
electrical cable which can easily be shortened or extended to
a maximum of 50 m. Use Belden 85240 or equivalent cable
(2 x 0.50 mm2
).
The sensor is compatible with the D0920, D1000 and
PGR-8800 Littelfuse Arc Flash Relays.
A0220 Sensor Installation
The sensors include an adhesivebacked drill template for easy surface
or panel-mount installation. All
dimensions are shown in millimetres.
Affix the drill template where the
sensor is to be mounted. Either M4
or M5 screws or pop rivets (4 mm
or 5 mm) can be used.
Mounting screws are M4 for the top
holes. This template matches the
mounting dimensions for the A1000 or
PGA-LS10 sensor.
The bottom mounting holes are
either for 5mm self-drilling screws
(3.5mm drill) or for M5 (4.2 mm drill).
This template matches the mounting
dimensions for the A0200 and
A0300 sensors.
For placement of sensors please refer to the relay manual.
Specifications
Sensitivity 0.5 mA/ klux
Range for D0920 2 klux to 30 klux
Range for PGR-8800 10 klux to 30 klux
Ambient temperature -25˚C to +70˚C
Degree of protection IP65
Type Selection Table:
A0220 Arc Detector includes 10m cable
A0220 SERIES
Arc Detecting Point Sensor
Detection range for a 3kA fault
2m
2m 2m
SENSOR WIRE TERMINAL
Red 1
Green 2
Screen 3
ORDERING NUMBER CONTROL POWER
A0220.0010 Arc Detector type V, 10 m
A0220.0020 Arc Detector type V, 15 m
A0220.0030 Arc Detector type V, 10 m, CCC approved
A0220.0040 Arc Detector type V, 15 m, CCC approved
Connection to D0920 relay
Ordering Information
SENSOR
WIRE
SENSOR 1
TERMINAL
SENSOR 2
TERMINAL
SENSOR 3
TERMINAL
SENSOR 4
TERMINAL
SENSOR 5
TERMINAL
SENSOR 6
TERMINAL
Green 4 8 12 16 20 24
Red 3 7 11 15 19 23
Screen Chassis Chassis Chassis Chassis Chassis Chassis
Connection to PGR-8800 relay
4 x ø3.5
ø9
A0220
Drill
guide
© 2022 Littelfuse, Inc. 97
5ARC-FLASH PROTECTION
Protection Relays
Littelfuse.com/pga1100
Accessory for Arc-Flash Relays
PGA-1100 (D1100)
Diode Logic
Description
The PGA-1100 Diode Logic module is an optional accessory
for the Littelfuse Arc-Flash Relays.
It is used in installations with more than one breaker and
more than one Arc-Flash Relay. Purpose of the unit is to
separate the trip paths, so the breakers can be tripped
independently from each other.
Typical applications are a switchboards with two incoming
feeders and one tie breaker or switchboards with several
protected zones and tripping of a common upstream
circuit breaker.
The unit has three input diodes to handle the outputs of
three Arc-Flash relays and three output diodes to handle the
trip coils of three circuit breakers. If more than three relays/
circuit breakers are needed, more units can be added by
connecting terminal 8 of one box to terminal 4 of the next
one, thus increasing the number of inputs and outputs with
multiples of three.
For more application information please refer to the arc-flash
relay manuals.
Specifications
Diodes 1000V reverse voltage, 3A continuous, 25A for 1 second
Certification CE
Dimensions H 70 mm (2.76”); W 20 mm (0.79”); D 80 mm (3.15”)
Simplified Circuit Diagram
1 2 3
4 8
5 6 7
ORDERING NUMBER DESCRIPTION
PGA-1100.0010 Diode logic unit
Ordering Information
98 © 2022 Littelfuse, Inc.
Protection Relays
Littelfuse.com/relayscontrols
© 2022 Littelfuse, Inc. 99
Protection Relays
Switching Relays and Controls
SWITCHING RELAYS & CONTROLS
6
SWITCHING RELAYS & CONTROLS
Simple controls perform a specific function such as changing lamp
intensity; vary the speed of a motor; or manage temperature of a heater.
PHS Series Phase Control............................................................... 100
SIR Series Solid-State Relay - Isolated ........................................ 102
SLR Series Solid-State Relay - Non-Isolated ............................... 104
TCR9C Temperature Controller ............................................... 106
100 © 2022 Littelfuse, Inc.
Protection Relays
Switching Relays and Controls
SWITCHING RELAYS & CONTROLS
6
Littelfuse.com/phs
PHS SERIES
Description
The PHS Series is an ideal method of changing lamp intensity,
varying the speed of a fan/motor, or controlling the temperature of
a heater. The effective output voltage is adjusted with an accessory
external potentiometer suitable for line voltage applications.
Operation
Upon application of input voltage, effective output voltage can be
varied by changing the external resistance value. As the external
resistance increases, the effective output voltage decreases. The
inverse is also true.
Features & Benefits
FEATURES BENEFITS
External adjustment
- 230VAC rated
potentiometer
Allows control of heavy loads directly, solid state
design will provide long life
Up to 20A steady
state - 200A inrush
Allows control of heavy loads directly, solid state
design will provide long life
Single hole
surface mounting Provides quick and easy installation
Accessories
P1004-174 (100kΩ 1W), P1004-175 (200kΩ 2W)
Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE RATING
PHS120A10 120VAC 10A
PHS120A20 120VAC 20A
PHS120A6 120VAC 6A
PHS230A10 230VAC 10A
PHS230A20 230VAC 20A
PHS230A6 230VAC 6A
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
Triac Output Device
V = Voltage
L = Load
RT = External Adjustment
Phase Control
For dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 101
Protection Relays
Switching Relays and Controls
SWITCHING RELAYS & CONTROLS
6
Littelfuse.com/phs
PHS SERIES
Specifications
Output
Type Variable voltage phase angle control
Rating Steady State (at 100% On) Inrush*
1A 10A
6A 60A
10A 100A
20A 200A
Minimum Load Current 100mA
Voltage Drop ≅ 2.0V at rated current
Input
Voltage 120 or 230VAC
Tolerance ±20%
AC Line Frequency 50/60Hz
Protection
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥100MΩ
Mechanical
Mounting * Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight 1A: ≅ 2.4 oz (68 g)
6, 10, & 20A: ≅ 3.9 oz (111 g)
External Adjustment
Potentiometer
120VAC 100KΩ rated at 1W
230VAC 200KΩ rated at 2W
Must have insulation resistance suitable for
line voltage applications.
*Units rated ≥ 6A must be bolted to a metal surface using the included heat sink compound. The
maximum mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
Typical Output Waveform
102 © 2022 Littelfuse, Inc.
Protection Relays
Switching Relays and Controls
SWITCHING RELAYS & CONTROLS
6
Littelfuse.com/sir
SIR SERIES
Solid-State Relay - Isolated
Description
The SIR Series is designed for industrial applications requiring
rugged reliable operation. Provides an optically isolated, high
capacity, solid-state output, with power switching capability up
to 20A steady state, 200A inrush. Zero voltage switching SIR2
extends the life of an incandescent lamp up to 10 times. Random
switching SIR1 is ideal for inductive loads. When fully insulated
female terminals are used on the connection wires, the system
meets the requirements for touch-proof connections.
Operation
The solid-state output is located between terminals 1 and 3,
and is normally open or normally closed without control
voltage applied to terminals 4 and 5. When control voltage is
applied to terminals 4 and 5, the solid-state output opens or
closes respectively.
Reset: Removing control voltage resets the output. The unit is
also reset if output voltage is removed.
Features & Benefits
FEATURES BENEFITS
Compact design
measures 2 in.
(50.8mm) square
Perfect for OEM applications where space is limited
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration
and humidity
Up to 20A, 200A inrush
output rating
Provides direct control of heavy inductive,
incandescent or resistive loads
Switching output is
optically isolated from
the control input
Provides the ability to interface between 2 different
electrical circuits
SIR1 models provide
random switching
Designed for use with resistive and incandescent
loads, extending lamp life up to 10 times
SIR2 models provide zero
voltage switching Perfect for resistive and incandescent loads
Metalized
mounting surface Facilitates heat transfer in high current applications
Ordering Information
MODEL SWITCHING CONTROL VOLTAGE RATING OUTPUT FORM OUTPUT VOLTAGE
SIR1A1A4 Random 9 to 30VAC or DC 3A Normally open 120VAC
SIR1A20A4 Random 9 to 30VAC or DC 20A Normally open 120VAC
SIR1B6B4 Random 90 to 150VAC or DC 6A Normally closed 120VAC
SIR1C20B6 Random 190 to 290VAC or DC 20A Normally closed 230VAC
SIR2A20A4 Zero voltage 9 to 30VAC or DC 20A Normally open 120VAC
SIR2B20A4 Zero voltage 90 to 150VAC or DC 20A Normally open 120VAC
SIR2B20B4 Zero voltage 90 to 150VAC or DC 20A Normally closed 120VAC
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
Wiring Diagram
V = Voltage
CV = Control Voltage
L = Load
Load may be connected
to terminal 3 or 1.
Note: Normally open output is
shown. Normally closed output is
also available.
For dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 103
Protection Relays
Switching Relays and Controls
SWITCHING RELAYS & CONTROLS
6
SIR SERIES
Specifications
Output
Type Optical isolation, totally solid state
Form SPST, NO or NC
Voltage 24, 120, or 230VAC
Tolerance ±20%
Ratings Steady State Inrush* Output Device
3A 30A Triac
6A 60A Triac
10A 100A Triac
20A 200A Triac
Minimum Load Current ≅ 50mA
Voltage Drop ≅ 2.0V at rated current
Leakage Current (Open State) ≅ 6mA
Input
Type Optical isolation LED/photo transistor
Control Voltage 9 to 290VAC/DC in 3 ranges
Power Consumption ≤ 0.5W
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting* Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -55° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
*Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Function Diagram
V = Voltage
CV = Control Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
R = Reset
= Undefined
Time
Littelfuse.com/sir
104 © 2022 Littelfuse, Inc.
Protection Relays
Switching Relays and Controls
SWITCHING RELAYS & CONTROLS
6
Littelfuse.com/slr
SLR SERIES
Solid-State Relay - Non-Isolated
L1 N/L2
V = Voltage
S1 = Initiate Switch
L = Load
Note: Normally open output is
shown. Normally closed output
is also available.
Description
The SLR Series has no isolation between the control switch
input and the solid-state output. Select the SLR for applications
where the control switch is the same voltage source as the
load. Provides the noiseless, reliability and long life of a
solid-state relay, without the cost of isolation circuitry. The
SLR Series offers random switching and is normally used for
inductive loads. When fully insulated female terminals are used
on the connection wires, the system meets the requirements
for touch-proof connections.
Operation
The solid-state output is located between terminals 1 and 2
and can be ordered as either normally open or normally closed,
when voltage is applied and S1 is open. When S1 is closed, the
solid-state output between terminals 1 and 2 closes (or opens).
If S1 is opened, the solid-state output will open (or close).
Reset: Opening S1 resets the output to its original state. Reset
is also accomplished by removing input voltage.
Features & Benefits
FEATURES BENEFITS
Compact design
measures 2 in.
(50.8mm) square
Perfect for OEM applications where space is limited
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Up to 20A steady, 200A
inrush output rating
Provides direct control of heavy inductive, resistive,
or incandescent loads
Metalized
mounting surface Facilitates heat transfer in high current applications
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
Ordering Information
MODEL SWITCHING INPUT
VOLTAGE
OUTPUT
RATING OUTPUT FORM
SLR1420A Random 120VAC 20A Normally open
SLR1610A Random 230VAC 10A Normally open
If you don’t find the part you need, call us for a custom product 800-843-8848
For dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 105
Protection Relays
Switching Relays and Controls
SWITCHING RELAYS & CONTROLS
6
SLR SERIES
Specifications
Output (Contact)
Type Non-isolated solid state
Form SPST, NO or NC
Voltage 24, 120, or 230VAC
Tolerance ±20%
Ratings Steady State Inrush* Output Device
1A 10A SCR & Bridge
Rectifier
6 A 60A Triac
10A 100A Triac
20A 200A Triac
Minimum Load Current ≅ 50mA
Voltage Drop
(at Rated Current) ≅ 2.0V - 6, 10, & 20A units; ≅ 2.5V - 1A units
Leakage Current (Open State) ≤ 5mA
Initiate Switch Voltage Same as the output voltage
Power Consumption ≤ 0.5W
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100MΩ
Mechanical
Mounting* Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight 1A units: ≅ 2.4 oz (68 g);
6, 10, 20A units: ≅ 3.9 oz (111 g)
*Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
Function Diagram
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
R = Reset
= Undefined
Time
Littelfuse.com/slr
106 © 2022 Littelfuse, Inc.
Protection Relays
Switching Relays and Controls
SWITCHING RELAYS & CONTROLS
6
Littelfuse.com/tcr9c
Description
The TCR9C of solid-state temperature control is a low cost modular
approach to accurate control of temperature. The high power output
is available in 20 amperes and provides setpoint temperature
control. The efficient mounting surface allows for utilization of
equipment as the heat sink. Designed for use with resistive loads.
Operation
Setpoint Control: TCR9C is a single setpoint temperature
controller. When the thermistor resistance is high (above the
setpoint), the solid-state output is ON. When the thermistor
resistance decreases (temperature increases) to setpoint
or below, the output turns OFF. It must be recognized that
temperature differential (under and overshoot) is largely due
to the system as a whole. The mass of the system, size of the
heaters and sensor all play an important part. Single setpoint
control is best when there is little or no lag time between heater
and sensor, and when the heater is not oversized.
Features & Benefits
J NTC thermistor sensing for low cost setpoint control
J Solid-state output to control resistive heaters
J External adjustment of the setpoint
J Small package, encapsulated, single-screw mounting
J Metal mounting surface utilizes equipment as heat sink
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
Specifications
Control
Type Single setpoint, negative temperature
coefficient resistance sensing
Sensor Type Thermistor, negative temperature coefficient
(customer supplied)
Electrically insulated for 1500V RMS min.
Adjustment Temperature setpoint selected by means of
an external resistance
Accuracy ≤ ±5% of the setpoint resistance
Add the tolerance of the NTC thermistor and
the drift of the adj. pot over temp. range
Setpoint vs. Ambient
Temperature and
Operating Voltage ±5% of setpoint resistance
Reset Time ≤ 150ms
Input
Voltage 120 - 240VAC
Tolerance ±15%
AC Line Frequency 50/60 Hz
TCR9C
Wiring Diagram
Caution: NTC Thermistor must be
electrically insulated, 1500 volts RMS
minimum.
NTC
Thermistor
RT
Set Point
Adjust 5 KΩ
V = Voltage
L = Load
Caution: NTC Thermistor must
be electrically insulated, 1500
volts RMS minimum.
Temperature Controller
For dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 107
Protection Relays
Switching Relays and Controls
SWITCHING RELAYS & CONTROLS
6
TCR9C
V = Voltage
L = Load
SP = Setpoint
NTC = Negative Temperature
Coefficient Thermistor
Function Diagram
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
1 2 3 4 5 6 7 8 9 10
RT (kOhms)
NTC (kOhms)
Load ON
Load OFF
Note: If R T value exceeds 13kOhms, the output will
not energize.
Adjustment vs. Thermistor Resistance
Note: If RT value exceeds 13kOhms, the
output will not energize.
Littelfuse.com/tcr9c
Output
Type Solid state
Form Non-isolated, single pole, zero voltage switching
Rating Model Steady State Inrush*
C 20A 200A*
Minimum Load Current 100mA
Voltage Drop ≅ 2V at rated current
Off State Leakage Current ≅ 5mA @ 230VAC
Protection
Dielectric Breakdown ≥2000 volts terminals to mounting surface
Isolation Voltage ≥100mΩ
Circuitry Encapsulated
Mechanical
Mounting Surface mount with one #10 (M5 x 0 .8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40°to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2 .7 oz (77 g)
* Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: non-repetitive for 16ms.
108 © 2022 Littelfuse, Inc.
Protection Relays
Littelfuse.com/relayscontrols
Protection Relays
© 2022 Littelfuse, Inc. 109
MOTOR & PUMP PROTECTION
7
Littelfuse.com/relayscontrols
MOTOR & PUMP PROTECTION
Prevent damage to motors caused by overloads, jams, phase loss or
unbalance, heat from non-electric sources, heavy start-ups and excessive
operational cycles. Dynamic thermal curves, as well as integrated
protection, metering, and data-logging functions extend motor life and
maximize process efficiency.
PGR-6100 Series Motor Ground-Fault & Insulation Relay.... 110
PGR-6101-120 Motor Ground-Fault & Insulation Relay.... 111
MPU-32 Series Motor Protection Unit................................ 112
MPS Series Motor Protection System .......................... 114
MPU-32-X69X Series Motor Protection Relay Retrofit Kit........... 116
MPS-469X Series Motor Protection Relay Retrofit Kit........... 116
111-Insider-P /
231-Insider-P Single-Phase Pump Monitor...................... 117
232-Insider Single-Phase Pump Monitor...................... 120
111P / 233P /
233P-1.5 Series Single-Phase Pump Monitor...................... 122
234-P Single-Phase Pump Monitor ..................... 124
235P Single-Phase Pump Monitor...................... 126
MP8000 Series Bluetooth Current & Voltage Monitor....... 128
777 Series 3-Phase Current & Voltage Monitor.......... 132
777 / 77C Series Single-Phase Current & Voltage Monitor.. 134
777-KW/HP-P2 Series 3-Phase Current & Voltage Monitor.......... 136
777-AccuPower 3-Phase Current & Voltage Monitor.......... 139
77C-KW/HP Series Single-Phase Current & Voltage Monitor.. 140
SIO-RTD-02-00 Temperature Input Monitor ....................... 144
*Bluetooth is a trademark of its respective owner.
For More Information…
and to download our Motor Protection
Brochure or White Paper, click on
Technical Resources at
Littelfuse.com/MotorProtection
Protection Relays
110 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
L2
L1
A
PGR-6100 SERIES
GROUNDED
SUPPLY
CT
B
C
(Ground-Fault
& Insulation Monitor)
A
Littelfuse.com/pgr-6100
PGR-6100 SERIES (GFR4000)
Ground-Fault & Insulation Monitor
Description
The PGR-6100 combines the features of a ground-fault
protection relay and insulation monitor into one unit. It protects
against ground faults by monitoring insulation resistance when
the motor is de-energized and by monitoring ground-fault current
when the motor is energized. The PGR-6100 features two
separate analog outputs for optional current and ohm meters,
and two separate alarm relays. It operates on one- or threephase solidly grounded, resistance-grounded and ungrounded
systems up to 6 kV.
Specifications
IEEE Device Numbers Ground Fault (50G/N, 51G/N),
Ground detector (64), Alarm Relay (74)
Input Voltage See ordering information
Dimensions H 75 mm (3”); W 100 mm (3.9”); D 115 mm (4.5”)
Response delay < 50 ms
Contact Operating Mode Selectable fail-safe or non-fail-safe
Harmonic Filtering Standard feature
Test Button Standard feature
Reset Button Standard feature
CT-Loop Monitoring Standard feature
Output Contacts Two Form C
Analog Output 0-1 mA
Approvals UL Listed (E183688) (1)
Warranty 5 years
Mounting DIN, Surface
ORDERING NUMBER CONTROL POWER
PGR-6100-120 120 Vac
PGR-6100-240(1) 240 Vac (1)
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS
Adjustable GF pickup
(10 mA-3 A)
Trip setting provides a wide range of low-level
protection and system coordination
Adjustable insulation
pickup (250 kΩ-2 MΩ)
Customizable insulation resistance setpoints for
maximum protection
Adjustable time delay
(50 ms-1.0 s)
Adjustable trip delay for quick protection and
system coordination
Output contacts Two Form C output contacts for ground fault and
insulation-resistance fault
Analog outputs
(0-1 mA)
Two analog outputs indicate insulation resistance
and ground-fault current
CT-Loop monitoring Alarms when CT is not connected
Selectable contact
operating mode
Selectable fail-safe or non-fail-safe operating
modes allows connection to shunt or undervoltage
breaker coil
Features & Benefits
SE-CS30 Series Ground-Fault CTs
Required zero-sequence current transformer
specifically designed for low level detection. Flux
conditioner is included to prevent saturation.
PGH Family High Tension Couplers
Required (for systems >1,300 V) PGH Family hightension coupler must be connected between the
phase conductor and the PGR-6100.
PGA-0500 Analog % Current Meter
PGA-0510 Analog Ohm Meter
Optional panel-mounted meters display
ground-fault current as a percentage of the
set-point and insulation resistance.
Accessories
A
B
B
ACCESSORIES REQUIREMENT
SE-CS30 Series Required
PGH Family Required >1300 V
PGA-0500 Optional
PGA-0510 Optional
Ground-Fault Protection – Grounded AC Systems
Note (1) - PGR-6100-240 ordering option is not UL Listed.
For optional conformal coating please consult factory.
Protection Relays
© 2022 Littelfuse, Inc. 111
MOTOR & PUMP PROTECTION
7
Littelfuse.com/pgr-6101-120
PGR-6101-120 (GFR4001)
Ground-Fault & Insulation Monitor
Description
The PGR-6101-120 combines the features of a ground-fault
protection relay and insulation monitor into one unit. It protects
against ground faults by monitoring insulation resistance when
the motor is de-energized and by monitoring ground-fault current
when the motor is energized. The PGR-6101-120 features two
separate analog outputs for optional current and ohm meters,
and two separate alarm relays. It operates on one- or threephase solidly grounded, resistance grounded and ungrounded
systems up to 6 kV.
Specifications
IEEE Device Numbers Ground Fault (50G/N, 51G/N),
Ground detector (64), Alarm Relay (74)
Input Voltage 120 Vac
Dimensions H 75 mm (3”); W 100 mm (3.9”); D 115 mm (4.5”)
Response delay < 50 ms
Contact Operating Mode Selectable fail-safe or non-fail-safe
Harmonic Filtering Standard feature
Test Button Standard feature
Reset Button Standard feature
CT-Loop Monitoring Standard feature
Output Contacts Two Form C
Analog Output 0-1 mA
Approvals UL Listed (E183688)
Warranty 5 years
Mounting DIN, Surface
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS
Adjustable GF pickup
(30-200 mA)
Trip setting provides a wide range of low-level
protection and system coordination
Adjustable insulation
pickup (60-600 kΩ)
Customizable insulation resistance setpoints for
maximum protection
Adjustable time delay
(50-250 ms)
Adjustable trip delay for quick protection and
system coordination
Output contacts Two Form C output contacts for ground fault and
insulation-resistance fault
Analog outputs
(0-1 mA)
Two analog outputs indicate insulation resistance
and ground-fault current
CT-Loop monitoring Alarms when CT is not connected
Selectable contact
operating mode
Selectable fail-safe or non-fail-safe operating
modes allows connection to shunt or undervoltage
breaker coil
Features & Benefits
SE-CS30 Series Ground-Fault Transformers
Required zero-sequence current transformer
specifically designed for low level detection. Flux
conditioner is included to prevent saturation.
PGH Family High Tension Couplers
Required (for systems >1,300 V) PGH Family hightension coupler must be connected between the
phase conductor and the PGR-6101-120.
PGA-0500 Analog % Current Meter
PGA-0510 Analog Ohm Meter
Optional panel-mounted meters display
ground-fault current as a percentage of the
set-point and insulation resistance.
Accessories
A
B
ACCESSORIES REQUIREMENT
SE-CS30 Series Required
PGH Family Required >1300 V
PGA-0500 Optional
PGA-0510 Optional
For optional conformal coating please consult factory.
L2
L1
A
PGR-6101 SERIES
GROUNDED
SUPPLY
CT
B
C
(Ground-Fault
& Insulation Monitor)
A
Ground-Fault Protection – Grounded AC Systems
B
Protection Relays
112 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/mpu-32
Motor Protection – Advanced
MPU-32 SERIES (PGR-6200)
Motor Protection Unit
ORDERING NUMBER COMMUNICATION
MPU-32-00-00 TIA-232
MPU-32-01-00 TIA-232 & TIA-485
MPU-32-02-00 TIA-232 & DeviceNet™
MPU-32-04-00 TIA-232 & EtherNet/IP™ & Modbus® TCP
NOTE: One of the following is required: MPU-CIM-00-00 Current Input Module, or
MPU-CTI-RT-00 Current Input Module with ring-tonque terminals.
Ordering Information
ACCESSORIES REQUIREMENT
Phase CTs Required
MPS-RTD-01-00 Optional
MPS-DIF-01-00 Optional
MPU-32-SMK Optional
CA-945 Optional
MPU-16A-Y92A-96N Optional
1
2
Description
The MPU-32 Motor Protection Unit is used to provide currentand temperature-based protection, metering, and data logging
for three-phase low-voltage medium-horsepower induction
motors. This relay is ideal for retrofitting and upgrading obsolete
or aging motor protection using existing CTs. See the PMA
Family of Panel Mount Adapter Kits to replace common
obsolete relays.
1 Motor Protection Unit
g Three ac-current inputs
g Earth-leakage-CT input
g Programmable digital input
g 24-Vdc source for digital input
g Programmable 4-20-mA analog output
g On-board temperature-sensor input,
g 100-Ω-Platinum RTD or PTC
g Three programmable output relays
g Local RS-232 communications, optional Network
Communications
g PC-interface software (SE-Comm-RIS)
g 4 line x 20 character backlit LCD display
g Keypad for programming and display selection
g 4 LEDs; 1 user programmable
2 Current Input Module (MPU-CIM)
The MPU-CIM Current Input Module is the interface
between the MPU-32 relay and the 5-A-secondary,
1-A-secondary, and sensitive current transformers. The
MPU-CIM is ordered separately from the MPU-32 and can
be surface or DIN-rail mounted. Wire-clamping terminals
are standard, but the MPU-CTI is available for those who
require ring-tongue terminals.
Simplified Circuit Diagram
PHASE CT
PHASE CT
GF CT PHASE CT
MPU-CIM MPS-RTD
RTD x 8
L2
L1
MPU-32
M
(Current Input Module)
(Motor Protection Relay)
PHASE CT
PHASE CT
PHASE CT GF CT
L2
MPS-CTU L1
M
MPS-RTD
MPS-OPI
RTD x 8
(Control Unit)
(Temperature
Input Module)
(Temperature
Input Module)
(Operator Interface)
D
Phase Current Transformers
Phase CTs are required to detect phase
currents. For upgrade applications, existing CTs
can be used.
Ground-Fault Current Transformer
Optional zero-sequence current transformer
detects ground-fault current. Available with 5-A
and 30-A primary ratings for low-level pickup.
MPS-RTD Temperature Input Module
Optional module provides 8 inputs to connect
Pt100, Ni100, Ni120, and Cu10 RTDs.
MPS-DIF Differential Current Module
Optional motor differential protection,
compatible with core balance and summation
current transformer connections.
B
C
Accessories
A
1
2
B
C
A
Protection Relays
© 2022 Littelfuse, Inc. 113
MOTOR & PUMP PROTECTION
7
Littelfuse.com/mpu-32
Motor Protection – Advanced
FEATURES IEEE # BENEFITS
Overload 49, 51 Extends motor life and prevents insulation failures and fires
Dynamic thermal model Provides protection through starting, running, and cooling cycles
Communications Remotely view measured values and event records, reset trips, and access setpoints
Ground fault 50G/N, 51G/N Prevents catastrophic failures and fires
Current unbalance/
Phase loss/Phase reverse 46 Prevents overheating due to unbalanced phases
RTD temperature 38, 49 RTD temperature protection (MPS-RTD module) for high-ambient or loss-of-ventilation protection
Phase loss/Phase reverse (current) 46 Detects unhealthy supply conditions
Overcurrent 50, 51 Prevents catastrophic failures and fires; extends motor life
Jam Prevents motor damage by detecting mechanical jams or excessive loading
Undercurrent 37 Detects low level or no-load conditions
PTC overtemperature 49 Overtemperature (PTC) protection for high-ambient or loss-of-ventilation detection
Starts per hour 66 Limits the motor starts per hour to prevent overheating
Differential 87 Optional MPS-DIF module for sensitive winding-fault protection
Reduced overcurrent mode Minimizes arc-flash hazards during maintenance
Metering View measured and calculated parameters with on-board display
MPU-CIM Separate current input module to reduce risk of open-CT hazard and for convenient installation
Analog output Provides means for metering selectable parameters
Data logging On-board 100-event recorder for data logging
Conformal coating Internal circuits are conformally coated to protect against corrosion and moisture
Features & Benefits
Wiring Diagram Specifications
Protective Functions
(IEEE Device Numbers)
Input Voltage 65-265 Vac, 25 VA; 80-275 Vdc, 25 W
Power-Up Time 800 ms at 120 Vac
Ride-Through Time 100 ms minimum
24-Vdc Source 100 mA maximum
AC Measurements True RMS and DFT, Peak, 16 samples/cycle, and
positive and negative sequence of fundamental
Frequency 50, 60 Hz or ASD
Output Contacts Three Form C programmables
Communications TIA-232 (standard); TIA-485, DeviceNet™,
Ethernet (optional)
Analog Output 4-20 mA, programmable
Conformally Coated Standard feature
Warranty 10 years
Mounting
(Control Unit) Panel (standard)
Surface (with MPU-32-SMK converter kit)
(Current Input Module) DIN, Surface
Approvals CSA certified, CE (European Union), UL Recognized,
C-Tick (Australian)
Overload (49, 51)
Phase reverse (current) (46)
Overcurrent (50, 51)
Jam
Ground fault (50G/N, 51G/N)
PTC overtemperature (49
RTD temperature (38, 49)
Unbalance (current) (46)
Starts per hour (66)
Differential (87)
Phase loss (current) (46)
Undercurrent (37)
......
+
12 11 10 9 8 7 6 5 4 3 2 1
13 14 15 16 17 18 19
26 25
21 22 23 24 27 31
PHASE CURRENT
TRANSFORMERS
GROUND-FAULT
CURRENT
TRANSFORMER
(required) (recommended)
MPS-RTD
(optional)
INPUT MODULE
MPU-32
MOTOR PROTECTION UNIT
TEMPERATURE INPUT
4-20 mA
ANALOG
OUTPUT
CIM I/0 MODULE
RELAY 2
RELAY 3
RELAY 1
CONTROL
POWER
DIG IN
CURRENT INPUT MODULE
MPU-CIM
MPS-DIF
DIFFERENTIAL
MODULE
(optional)
A B
C
D
2
1
MPU-32 SERIES (PGR-6200)
Protection Relays
114 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/mps
PHASE CT
PHASE CT
GF CT PHASE CT
MPU-CIM MPS-RTD
RTD x 8
L2
L1
MPU-32
M
(Current Input Module)
(Motor Protection Relay)
PHASE CT
PHASE CT
PHASE CT GF CT
L2
MPS-CTU L1
M
MPS-RTD
MPS-OPI
RTD x 8
(Control Unit)
(Temperature
Input Module)
(Temperature
Input Module)
(Operator Interface)
Motor Protection – Advanced
MPS SERIES (PGR-6300)
Motor Protection System
1
2
Description
The MPS Motor Protection System monitors voltage, current,
and temperature to provide a comprehensive package of
22 protective functions. The MPS is a modular system with
integrated protection, motor control, metering, and data-logging
functions. This system is typically used to provide protection
for three-phase low- and medium-voltage, medium- to highhorsepower induction motors.
1 Operator Interface (MPS-OPI)
g Large, bright, 4 x 20 vacuum-fluorescent display
g Display metered values
g Access set points
g Powered by Control Unit
g Panel mount or attach directly to Control Unit
g Remote mounting (1.2 km or 4000 ft maximum loop length)
g 1/2 DIN size
g Hazardous-location certified
2 Control Unit (MPS-CTU)
g Current inputs—5-A or 1-A secondary phase current
transformers
g Voltage inputs—up to 600 V without PTs
g Earth-leakage input—5-A or 1-A secondary or sensitive
transformer
g Tachometer (high-speed pulse) input
g 8 digital inputs, 5 relay outputs, 1 analog input and output
g 24-Vdc supply for OPI and RTD modules, and for digital inputs
g IRIG-B time-code input
g 1/2 DIN size, surface mount
g RS-485 network communications (Standard)
g DeviceNet™, Profibus®, or Ethernet communications available
Phase Current Transformers
Phase CTs are required to detect
phase currents.
Ground-Fault Current Transformer
Required zero-sequence current transformer
detects ground-fault current. Available with 5-A
and 30-A primary ratings for low-level pickup.
MPS-RTD Temperature Input Module
Optional module provides 8 inputs to connect
Pt100, Ni100, Ni120, and Cu10 RTDs.
MPS-DIF Differential Current Module
Optional motor differential protection,
compatible with core balance and summation
current transformer connections.
B
C
Accessories
A
ACCESSORIES REQUIREMENT
MPS-OPI-01-00 Recommended
Phase CTs Required
Ground-Fault CT Recommended
MPS-RTD-01-00 Optional
MPS-DIF-01-00 Optional
SE-IP65CVR-M Optional
1
2
ORDERING NUMBER COMMUNICATIONS
MPS-CTU-01-00 RS-485
MPS-CTU-02-00 RS-485 & DeviceNet™
MPS-CTU-03-00 RS-485 & Profibus®
MPS-CTU-04-00 RS-485 & EtherNet/IP™ & Modbus® TCP
Ordering Information
Simplified Circuit Diagram
B
C
A
D
Protection Relays
© 2022 Littelfuse, Inc. 115
MOTOR & PUMP PROTECTION
7
Littelfuse.com/mps
Motor Protection – Advanced
Wiring Diagram
PHASE
VOLTAGES
MPS-CTU
CONTROL UNIT
RELAY
OUTPUTS
I/0 MODULE
DIGITAL
INPUTS
4-20 mA
ANALOG
INPUT
+
ANALOG
OUTPUT
4-20 mA
+
39 40
53 52
43 51 ...... 5 16 ...... 1 2
20 17 60 56 ...... 33 22
CONTROL
POWER
RS-485
35 37 ......
30 29 27 26 23 22
PHASE CURRENT
TRANFORMERS GROUND-FAULT
CURRENT
TRANSFORMER
OPERATOR
INTERFACE
MPS-OPI
(recommended)
(required) (required)
MPS-RTD
RTD MODULE
(optional)
(optional)
MPS-DIF
DIFFERENTIAL
MODULE
A B
C
D
1
2
Specifications
Protective Functions
(IEEE Device Numbers)
Input Voltage 65-265 Vac, 25 VA; 80-275 Vdc, 25 W
Power-Up Time 800 ms at 120 Vac
Ride-Through Time 100 ms minimum
24-Vdc Source 100 mA maximum
AC Measurements True RMS and DFT, Peak, 16 samples/cycle, and
positive and negative sequence of fundamental
Frequency 50, 60 Hz or ASD
Inputs Phase current, Earth-leakage current, Phase voltage,
7 digital, tachometer, 1 analog
Output Contacts 5 contacts — See Product Manual
Approvals CSA Certified, RCM (Australian), UL Recognized
Communications Allen-Bradley® DFI and Modbus® RTU (Standard);
DeviceNet™, Profibus®, Ethernet (Optional)
Conformally Coated Standard feature
Warranty 10 years
Mounting
(Control Unit) Surface
(Operator Interface) Panel, Control-Unit mounted
Overload (49, 51)
Phase reverse (current) (46)
Overfrequency (81)
Overcurrent (50, 51)
Jam
Underfrequency (81)
Ground fault (50G/N, 51G/N)
Undercurrent (37)
Unbalance (voltage) (47)
Failure to accelerate
RTD temperature (38, 49)
Unbalance (current) (46)
Underspeed (14)
Starts per hour (66)
Phase loss (voltage) (47)
Overvoltage (59)
Differential (87)
Phase loss (current) (46)
Undervoltage (27)
Phase reverse
(voltage) (47)
Power factor (55)
Features & Benefits
FEATURES IEEE # BENEFITS
Overload 49, 51 Extends motor life and prevents insulation failures and fires
Current unbalance/
Phase loss/Phase reverse 46 Prevents overheating and extends motor life
Overcurrent/Jam 50, 51 Prevents catastrophic failures and fires and extends motor life
Undercurrent 37 Detects low-level or no-load conditions
Ground fault 50g/N, 51G/N Prevents catastrophic failures and fires
RTD temperature 38, 49 Optional RTD temperature protection (MPS-RTD module) for
high ambient or loss of ventilation protection
Overvoltage 59 Prevents stress to insulation
Undervoltage 27 Prevents a start attempt when it will damage the motor
Voltage unbalance 47 Detects unhealthy supply voltage
Phase differential 87 Provides sensitive protection for high-resistance winding faults
Dynamic thermal mode Provides protection through starting, running, overload, and cooling cycles
Reduced overcurrent mode Minimizes Arc-Flash hazards during maintenance
Starter control Simplifies the installation by reducing component count
Metering Displays the measured and calculated motor parameters
Data logging On-board 64-event recorder helps with system diagnosis
Communications Remotely view measured values, event records & reset trips
Conformal coating Internal circuits are conformally coated to protect against corrosion and moisture
MPS SERIES (PGR-6300)
Protection Relays
116 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/mpu-32-X69X, Littelfuse.com/mps-469X
Motor Protection Relay Retrofits
MPU-32-X69X (PGR-6210) SERIES / MPS-469X (PGR-6310) SERIES
Motor Protection Retrofit Kits
Description
Littelfuse Startco retrofit kits are an excellent choice for upgrading
motor protection, providing current- and temperature-based
protection, metering, and data logging.
1 MPU-32-X69X
The MPU-32-X69X Motor Protection Retrofit Kit is designed
to replace GE Multilin 169, 269, and 369 relays. It includes
the MPU-32 Motor Protection Relay, MPU-CIM Current
Input Module, and optional MPS-RTD Temperature Input
Modules, which are pre-wired on a panel. The kit fits in
the existing space and typically can utilize existing current
transformers and wiring to simplify the upgrade procedure.
2 MPS-469X
The MPS-469X Motor Protection Retrofit Kit replaces the
GE Multilin 469 relay. It includes the MPS Motor Protection
System and optional RTD and differential modules mounted
on a panel that can be installed in the existing 469 cutout.
Existing current transformer and wiring can be utilized,
simplifying the upgrade procedure.
Front
Front
MPU-32-X69X
MPS-469X
Back
Back
MPU-32-X69X Ordering Information
RTD INPUTS MPU-32 COMMUNICATIONS GROUND-FAULT CT FUTURE OPTIONS
MPU-32-X69X – X X X 00
0 = One Platinum 100 Ω 0 = TIA232 0 = Wired for Sensitive Ground-Fault CT (50 mA Secondary)
1 = One Platinum 100 Ω
and 8-input
MPS-RTD Module
1 = TIA232 & TIA485 1 = Wired for 1- or 5-A Secondary Ground-Fault CT
2 = TIA232 & DeviceNet
4 = TIA232 & Ethernet
MPS-469X Ordering Information
MODULE CONFIGURATION MPS COMMUNICATIONS FUTURE OPTIONS
MPS-469X – X X 000
0 = None 1 = RS485
1 = One MPS-RTD Module 2 = RS485 & DeviceNet
2 = Two MPS-RTD Modules 3 = RS485 & Profibus
3 = One MPS-DIF Module 4 = RS485 & Ethernet
4 = One MPS-RTD Module and One MPS-DIF Module
1
2
FEATURES BENEFITS
Mounting Fits in existing mounting holes and panel openings
Quick installation Existing CTs and RTDs can be used to reduce
installation time
Factory tested 100% factory-tested, pre-assembled components
ensure reliability
Communications Add communications capability to older switchgear and
improve system performance
Microprocessor
based No calibration required saves on maintenance cost
Reduced overcurrent
mode
Maintenance mode setting to reduce the risk of
Arc-Flash Hazards
Conformal coating Protects circuit boards against corrosion and moisture
Additional protection Additional protective functions, including dynamic thermal
model and ability to match existing overcurrent curves
Features & Benefits
Protection Relays
© 2022 Littelfuse, Inc. 117
MOTOR & PUMP PROTECTION
7
Motor and Pump Protection
Description
The Littelfuse 111-Insider-P single-phase products fit inside ¹⁄³
and ½, 115V control boxes and the 231-Insider-P fits inside ¹⁄³ ½,
¾, and 1 hp, 230V control boxes. Both models are designed to
protect single-phase pumps from dry-well, dead-head, jammed
impeller, rapid-cycle, overvoltage, and undervoltage conditions.
A calibration adjustment allows the Insider to be calibrated
to your specific pumping applications, thereby reducing
the possibility of false or nuisance tripping. A unique
microcontroller-based voltage and current-sensing circuit
constantly monitors the incoming power for fluctuations,
overcurrent, and undercurrent. When an abnormality, such as
loss of suction is detected, the product deactivates its output
relay and directly disconnects the pump motor. The unit then
begins its user-selectable restart delay (dry-well recovery)
timer. When the timer counts to zero or power is removed and
reapplied, the unit reactivates its output relay and turns the
pump back on. By leaving the restart delay knob in the reset
position, the unit will operate in manual reset mode.
The Insider communicates with a hand-held diagnostics tool
called the Informer (sold separately). The Informer displays
parameters including calibration points, trip points, run time and
last faults. An IR Kit-12 (12” fiber optic kit) is included with each
Insider, allowing the Informer to access these parameters even
when the Insider is enclosed in a control box. This is valuable for
troubleshooting the pump while it is running.
NOTE: The 111/231-Insider-P models have a sensitivity adjustment for the dry-well trip point.
After calibration is done, you can adjust the sensitivity for the dry-well/dead-head trip point
from 70-90% of the full load. This makes the unit even more adaptable to varying pumping
applications. If you have a very low producing well, you increase the sensitivity closer to the
90% mark, or if you have a very heavy producing well, you would decrease the sensitivity around
the 70% mark.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of voltage and current protects
pumps from dry-well, dead-head, jammed impeller,
rapid cycling, and voltage faults
Onboard sensitivity
adjustment
Allows user to adjust the current sensitivity for the
dry-well / dead-head trip point from 70% - 90% of the
full load.
Adjustable restart delay Allows user to select well recovery time delay after a
dry-well condition occurs, or to select manual reset
Built in IR
communications link
Used with the Informer, allows user to see stored
faults, run time, and also troubleshoot the pump while
it’s running
LED indication Provides status and diagnostics for troubleshooting
Wiring Diagrams
See next page.
Accessories
Informer
A hand-held diagnostic tool that uses an infrared
receiver to access information which can be
helpful for troubleshooting the system. Includes
the Informer IR Kit-12
Informer IR Kit-12
12” infrared adapter cable attaches to the face of
the unit to provide remote diagnostics without
opening the panel. Included with the Informer
Ordering Information
MODEL VOLTAGE DESCRIPTION
111-Insider-P 115VAC ¹⁄³
- ½ hp, includes IR Kit-12
231-Insider-P 230VAC ¹⁄³
- 1 hp, includes IR Kit-12
111-INSIDER-P / 231-INSIDER-P
Single-Phase Pump Monitor
Littelfuse.com/111insiderp-231insiderp
Protection Relays
118 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/111insiderp-231insiderp
Specifications
Functional Specifications
Adjustments/Settings
Overcurrent 125% of calibration point
Underload (dry-well) Adjustable (70 to 90% of calibrated run power)
Overvoltage
111-Insider-P 132.5VAC
231-Insider-P 265VAC
Undervoltage
111-Insider-P 95VAC
231-Insider-P 190VAC
Number of restarts allowed
in a 60-sec. period
(rapid-cycling) 4
Trip Delay Times
Overcurrent 5 seconds
Dry-well 4 seconds
Restart Delay Times
Over/Undervoltage 2 seconds
All other faults Manual, 2-225 minutes
111-INSIDER-P / 231-INSIDER-P
MODEL 231/111
INSIDER-P
BLUE
FIGURE 5: Pentek® Control Box with the PumpSaver
®
Plus Installed
PENTEK® CONTROL BOX WIRING DIAGRAM FRANKLIN™ CONTROL BOX WIRING DIAGRAM
111-Insider-P/231-Insider-P
in Franklin™ Control Box
SOLID-STATE
SWITCH
B(MAIN) Y(COMM)
BLK
RED
ORANGE
YEL
R(START) L2 L1
BLUE 111/231
INSIDER-P
Wiring Diagrams
Input Characteristics
Supply Voltage
111-Insider-P 115VAC
231-Insider-P 230VAC
Load Range
111-Insider-P ¹⁄³
– ½ hp
231-Insider-P ¹⁄³
– 1 hp
Frequency 50*/60Hz
Output Characteristics
Output Contact Rating-SPST
111-Insider-P ½hp@120VAC (17 amps max.)
231-Insider-P 1hp@ 240VAC (17 amps max.)
General Characteristics
Operating Temperature -40º to 60º C (-40º to 140º F)
Maximum Input Power 5 W
Safety Marks
cUR** UL508, C22.2 No. 14
Weight 10 oz.
Mounting Methods Inside a Pentek®, Franklin™, CentriPro™,
Flint and Walling™, and Grundfos®***
control box
*Note: 50Hz will increase all delay timers by 20%
**The 111-Insider-P and 231-Insider-P are approved by UL for use in the Franklin™, Pentek®, and
CentriPro™ type 3R control boxes when installed as described in the installation instructions.
The 111-Insider-P and 231-Insider-P are not intended to provide overload protection, and should
be used with thermally or impedance protected motors only.
***Grundfos control boxes manufactured after mid 2014.
Motor and Pump Protection
Protection Relays
© 2022 Littelfuse, Inc. 119
MOTOR & PUMP PROTECTION
7
111-INSIDER-P / 231-INSIDER-P
FLINT AND WALLING™ CONTROL BOX WIRING DIAGRAM
CAPACITOR ORANGE
BLUE
BLACK
5 YELLOW 231/111
INSIDER-P
VOLTAGE
RELAY
1 2
YELLOW RED
B(MAIN) Y(COMM) R(START) L2 L1
FIGURE 9: Flint and Walling™ Control Box with the PumpSaver
®
Plus Installed
CENTRIPRO™ CONTROL BOX WIRING DIAGRAM
VOLTAGE
RELAY
B(MAIN) Y(COMM)
BLACK
ORANGE
R(START) L2 L1
BLUE
231/111
INSIDER-P
RED YELLOW YELLOW
FIGURE 7: CentriPro™ Control Box with the PumpSaver
®
Plus Installed
GRUNDFOS® CONTROL BOX* WIRING DIAGRAM
Grundfos® Control Box with the PumpSaver
®
Plus Installed
CAPACITOR ORANGE
BLUE
BLACK
5
YELLOW
VOLTAGE
RELAY
1
2
YELLOW
RED
B(MAIN) Y(COMM) R(START) L2 L1
MODEL 231/111
INSIDER-P
BLACK
For installation instructions see the Fresh Water Pumping Catalog at
www.Littelfuse.com/PumpProtection
Motor and Pump Protection
Littelfuse.com/111insiderp-231insiderp
* For boxes manufactured in mid 2014 or later.
See 232-INSIDER on next page for boxes manufactured prior to mid 2014.
Protection Relays
120 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
232-INSIDER
Single-Phase Pump Monitor
Description
The Model 232-Insider single-phase PumpSaver® fits inside ¹/3, 1/2,
3/4, and 1hp, 230V Grundfos control boxes manufactured prior to
mid 2014. The PumpSaver® Model 232-Insider is a pump monitor
designed to protect single-phase pumps from dry-well, deadhead, jammed impeller, overvoltage and undervoltage conditions.
Typical applications include residential water wells, commercial
water wells, irrigation wells, and golf course systems.
A calibration adjustment allows the 232-Insider to be calibrated
to your specific pumping application, thereby reducing the
possibility of false or nuisance tripping. A unique microcontrollerbased voltage and current-sensing circuit constantly monitors
the incoming power for fluctuations, overcurrent, and
undercurrent. When an abnormality, such as loss of suction
is detected, the 232-Insider deactivates its output relay and
directly disconnects the pump motor. The 232-Insider then
begins its user-selectable restart delay (dry-well recovery)
timer. When the timer counts to zero or power is removed and
reapplied, the 232-Insider reactivates its output relay and turns
the pump back on. By leaving the restart delay knob in the reset
position, the 232-Insider will operate in manual reset mode.
The Insider communicates with a hand-held diagnostics tool
called the Informer (sold separately). The Informer displays
parameters including calibration points, trip points, run time and
last faults. This is valuable for troubleshooting the pump while it
is running.
Note: The use of flow restrictors or unusually high head pressures at the time of calibration may
interfere with the detection of dead-head conditions. Contact Littelfuse for information on a
product to fit these applications.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of voltage and current protects
pumps from dry-well, dead-head, jammed impeller,
and voltage faults
Adjustable restart delay Allows user to select well recovery time delay after a
dry-well condition occurs, or to select manual reset
Built in IR
communications link
Used with the Informer, allows user to see stored
faults, run time, and also troubleshoot the pump while
it’s running
LED indication Provides status and diagnostics for troubleshooting
Accessories
Informer
A hand-held diagnostic tool that uses an infrared
receiver to access information which can be
helpful for troubleshooting the system.
Wiring Diagram
BLK
BLK
ORANGE
YEL
CAPACITOR
RED
YEL
RELAY
L1 L2* Y R B
*Note: Move short yellow wire from the 90° terminal on L2 to the 45° terminal on L2.
232-Insider
1/3 to 1hp @ 230VAC
RESTART DELAY/CAL.
(MINS.)
800-843-8848
MADE INUSA E68520 MODEL 232-INSIDER
232-INSIDER CONNECTIONS IN GRUNDFOS® CONTROL BOX
For installation instructions see the Install Bulletin.
Motor and Pump Protection
Littelfuse.com/232insider
Protection Relays
© 2022 Littelfuse, Inc. 121
MOTOR & PUMP PROTECTION
7
Littelfuse.com/232insider
232-INSIDER
Specifications
Functional
Adjustments/Settings
Overcurrent 125% of calibration point
Underload (dry-well) Approx. 80% of calibration point
Underload (dry well) with high
sensitivity jumper removed Approx. 87% of calibration point
Overvoltage 265VAC
Undervoltage 190VAC
Trip Delay Times
Overcurrent 5 seconds
Dry-well 4 seconds
Restart Delay Times
Over/undervoltage 2 seconds
All other faults
(dry-well recovery timer) Manual, 2-225 minutes
Input Characteristics
Supply Voltage 230VAC
Load Range ¹⁄3 – 1 hp
Frequency 50*/60Hz
Output Characteristics
Output Contact Rating-SPST 1hp@240VAC (17 amps max.)
General Characteristics
Operating Temperature -40º to 60º C (-40º to 140º F)
Maximum Input Power 5 W
Safety Marks
UL UL508
CSA C22.2 No. 14
Weight 10 oz.
Mounting Methods Grundfos® Control Box manufactured
prior to mid 2014
*Note: 50 Hz will increase all delay timers by 20%
Motor and Pump Protection
Protection Relays
122 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/111p-233p
Motor and Pump Protection
111P / 233P / 233P-1.5 SERIES
Single-Phase PumpSaver®
Description
The Littelfuse Models 111P (115 volt, ¹⁄³ to 1hp); 233P-1.5
(230 volt, ¹⁄³ to 1.5hp); and 233P (230 volt, ¹⁄³ to 3hp) protect
pumps from dry-well, dead-head, jammed impeller, overvoltage/
undervoltage conditions and now rapid-cycle protection whether
the pressure switch is mounted before or after our unit.
A calibration adjustment allows the unit to be calibrated to your
specific pumping applications, thereby reducing the possibility
of false or nuisance tripping. A unique microcontroller-based
voltage and current-sensing circuit constantly monitors the
incoming power for fluctuations, overcurrent, and undercurrent.
When an abnormality, such as loss of suction is detected, the
unit deactivates its output relay and directly disconnects the
pump motor. The unit then begins its user-selectable restart
delay (dry-well recovery) timer. When the timer counts to zero or
power is removed and reapplied, the unit reactivates its output
relay and turns the pump back on.
The infrared LED communicates with a hand-held diagnostics
tool called the Informer (sold separately). The Informer displays
parameters including calibration points, trip points, run time and
last faults.
Special considerations for pump cables larger than #10 AWG:
In some cases where larger motors are installed with deep
set pumps, pump cables are used that exceed the relay’s
terminal size. In these conditions, a short splice of #10 AWG or
#12 AWG may be a solution at the control box. Note: All local,
state and national electric codes should be followed when
applying this solution.
NOTE: The 111P/233P/233P-1.5 models have a sensitivity adjustment for the dry-well trip point.
After calibration is done, you can adjust the sensitivity for the dry-well/dead-head trip point
from 70-90% of the full load. This makes the unit even more adaptable to varying pumping
applications. If you have a very low producing well, you increase the sensitivity closer to the
90% mark, or if you have a very heavy producing well, you would decrease the sensitivity around
the 70% mark.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller based
circuitry
Constant monitoring of voltage, power factor, current
for reliable pump protection
Onboard calibration
process
Calibrates unit to your specific individual pumping
application and reduces nuisance tripping
Onboard sensitivity
adjustment
User adjustable sensitivity knob makes the unit more
adaptable to varying pumping applications
Accessories
Informer
A hand-held diagnostic tool that uses an infrared
receiver to access information which can be
helpful for troubleshooting the system.
Wiring Diagram
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION
111P 115VAC Load Range: ¹⁄³
- 1hp
111P-ENCL 115VAC 111P with NEMA3R enclosure
233P 230VAC Load Range: ¹⁄³
- 3hp
233P-ENCL 230VAC 233P with NEMA3R enclosure
233P-1.5 230VAC Load Range: ¹⁄³
- 1.5hp
233P-1.5-ENCL 230VAC 233P-1.5 with NEMA3R enclosure
For dimensional drawing see: Appendix page 511, Figure 15.
Protection Relays
© 2022 Littelfuse, Inc. 123
MOTOR & PUMP PROTECTION
7
111P / 233P / 233P-1.5 SERIES
Specifications
Functional Specifications
Adjustments/Settings
Overcurrent 125% of calibration point
Underload (dry-well) Adjustable (70 to 90% of calibrated run power)
Overvoltage
111P 132.5VAC
233P, 233P-1.5 265VAC
Undervoltage
111P 95VAC
233P, 233P-1.5 190VAC
Number of restarts allowed
in a 60-sec. period
(rapid-cycling) 4
Trip Delay Times
Overcurrent 5 seconds
Dry-well 4 seconds
Restart Delay Times
Over/undervoltage 2 seconds
All other faults Manual, 2-225 Minutes
Input Characteristics
Supply Voltage
111P 115VAC
233P-1.5, 233P 230VAC
Load Range:
111P ¹⁄³
– 1 hp
233P-1.5 ¹⁄³
– 1.5 hp
233P ¹⁄³
– 3 hp
Frequency 50*/60Hz
Output Characteristics
Output Contact Rating-SPST
111P 1hp@120VAC (16 amps max.)
233P-1.5 1.5hp@240VAC (10 amps max.)
233P 3hp@240VAC (17 amps max.)
General Characteristics
Operating Temperature -40º to 60º C (-40º to 140º F)
Maximum Input Power 5 W
Wire Gauge Solid or Stranded 10 - 22AWG
Terminal Torque 13 in.-lbs.
Safety Marks
cUL Listed UL508, C22.2 No. 14
Dimensions H 73.66 mm (2.9”); W 133.35 mm (5.25”);
D 73.99 mm (2.913”)
Weight 14 oz.
Mounting Methods #8 screws
*Note: 50Hz will increase all delay timers by 20%
Motor and Pump Protection
Littelfuse.com/111p-233p
Protection Relays
124 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
234-P
Description
The PumpSaver® Model 234-P is designed to be mounted
inside a Grundfos® control box to protect ¹/3 – 3hp, 2- or 3-wire,
230V pumps.
The Model 234-P protects single-phase pumps from dry-well,
dead-head, rapid-cycle, jammed-impeller, and over/undervoltage
conditions. Typical applications include residential waterwells,
commercial waterwells, irrigation wells, and golf course and
other sprinkler systems.
A calibration adjustment allows the 234-P to be calibrated
to your specific pumping applications, thereby reducing the
possibility of false or nuisance tripping. A unique microcontrollerbased voltage and current-sensing circuit constantly monitors
the incoming power for fluctuations, overcurrent, and
undercurrent. When an abnormality, such as loss of suction is
detected, the 234-P deactivates its output relay and directly
disconnects the pump motor. The 234-P then begins its userselectable restart delay (dry-well recovery) timer. When the
timer counts to zero or power is removed and reapplied, the
234-P reactivates its output relay and turns the pump back on.
By leaving the restart delay knob in the reset position, the 234-P
will operate in manual reset mode.
The 234-P communicates with a hand-held diagnostics tool
called the Informer (sold separately). The Informer displays
parameters including calibration points, trip points, run time and
last faults. An IR Kit-12 (12” fiber optic kit) allows the Informer to
access these parameters even when the 234-P is enclosed in a
control box. This is valuable for troubleshooting the pump while
it is running.
NOTE: The PumpSaver® models have a sensitivity adjustment for the dry-well trip point. After
calibration is done, you can adjust the sensitivity for the dry-well/dead-head trip point from 70-
90% of the full load. This makes the unit even more adaptable to varying pumping applications.
If you have a very low producing well, you increase the sensitivity closer to the 90% mark, or if
you have a very heavy producing well, you would decrease the sensitivity around the 70% mark.
The Model 234-P is not recommended for use with the Grundfos® Deluxe Control Box.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of voltage and current protects
pumps from dry-well, dead-head, jammed impeller,
rapid cycling, and voltage faults
Onboard sensitivity
adjustment
Allows user to adjust the current sensitivity for the
dry-well / dead-head trip point from 70% - 90% of the
full load.
Adjustable restart delay Allows user to select well recovery time delay after a
dry-well condition occurs, or to select manual reset
Built in IR
communications link
Used with the Informer, allows user to see stored
faults, run time, and also troubleshoot the pump while
it’s running
LED indication Provides status and diagnostics for troubleshooting
Wiring Diagram
START
CAPACITOR
RUN
CAPACITOR
RELAY
YELLOW RED
ORANGE
BLACK
BLACK
BLK
BLUE
SW L1 L2 YEL RED BLK
RESTART DELAY/
1.5 to 3hp at 230VAC
_ +
IR
LINK
YELLOW
234-P CONNECTIONS IN GRUNDFOS® CONTROL BOX
For installation instructions see the Install Bulletin.
Single-Phase Pump Monitor
Motor and Pump Protection
Littelfuse.com/234p
Protection Relays
© 2022 Littelfuse, Inc. 125
MOTOR & PUMP PROTECTION
7
Littelfuse.com/234p
234-P
Accessories
Informer
A hand-held diagnostic tool that uses an infrared
receiver to access information which can be
helpful for troubleshooting the system. Includes
the Informer IR Kit-12
Informer IR Kit-12
12” infrared adapter cable attaches to the face of
the unit to provide remote diagnostics without
opening the panel. Included with the Informer
Specifications
Functional Specifications
Adjustments/Settings
Overcurrent 125% of calibration point
Underload (dry-well) Adjustable (70 - 90% of calibrated run power)
Overvoltage 265VAC
Undervoltage 190VAC
Number of restarts allowed
in a 60-second period
(rapid-cycling) 4
Trip Delay Times
Overcurrent 5 seconds
Dry-well 4 seconds
Restart Delay Times
Over/undervoltage 2 seconds
All other faults (dry-well
recovery timer) Manual, 2-225 Minutes
Input Characteristics
Supply Voltage 230VAC
Load Range ¹⁄3 – 3 hp
Frequency 50*/60Hz
Output Characteristics
Output Contact Rating (SPST) 3 hp @ 240VAC (17 amps max.)
General Characteristics
Operating Temperature -40º to 60º C (-40º to 140º F)
Maximum Input Power 5W
Dimensions Fitted to Grundfos® Control Box
Weight 14 oz.
Mounting Methods Grundfos® Control Box
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 2, 4kV contact, 6kV air
*Note: 50 Hz will increase all delay timers by 20%
Motor and Pump Protection
Protection Relays
126 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/235p
235P
Wiring Diagram
Description
The Littelfuse 235P is designed to protect 5-15hp, 230V,
single-phase pumps from dry-well, dead-head, jammed impeller
and overvoltage and undervoltage conditions.
A calibration adjustment allows the 235P to be calibrated
to your specific pumping applications, thereby reducing the
possibility of false or nuisance tripping. A unique microcontrollerbased voltage and current-sensing circuit constantly monitors
the incoming power for fluctuations causing overcurrent and
undercurrent. When an abnormality, such as loss of suction
is detected, the 235P deactivates its output relay and directly
disconnects the pump motor. The unit then begins its userselectable restart delay (dry-well recovery) timer. When the
timer counts to zero or power is removed and reapplied, the unit
reactivates its output relay and turns the pump back on.
The 235P communicates with a hand-held diagnostics tool
called the Informer (sold separately). The Informer displays
parameters including calibration points, trip points, run time and
last faults.
An external current transformer is required for operation
(sold separately).
Special considerations for pump cables larger than #10 AWG:
In some cases where larger motors are installed with deep
set pumps, pump cables are used that exceed the relay’s
terminal size. In these conditions, a short splice of #10 AWG or
#12 AWG may be a solution at the control box. Note: All local,
state and national electric codes should be followed when
applying this solution.
NOTE: The 235P model has a sensitivity adjustment for the dry-well trip point. After calibration
is done, you can adjust the sensitivity for the dry-well/dead-head trip point from 70-90% of the
full load. This makes the unit even more adaptable to varying pumping applications. If you have
a very low producing well, you increase the sensitivity closer to the 90% mark, or if you have a
very heavy producing well, you would decrease the sensitivity around the 70% mark.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of voltage and current protects
pumps from dry-well, dead-head, jammed impeller,
rapid cycling, and voltage faults
Onboard sensitivity
adjustment
Allows user to adjust the current sensitivity for the
dry-well / dead-head trip point from 70% - 90% of the
full load.
Adjustable restart delay Allows user to select well recovery time delay after a
dry-well condition occurs, or to select manual reset
Built in IR
communications link
Used with the Informer, allows user to see stored
faults, run time, and also troubleshoot the pump while
it’s running
LED indication Provides status and diagnostics for troubleshooting
MODEL LINE VOLTAGE DESCRIPTION
235P 230VAC 5 - 15hp
235P-ENCL 230VAC 233P with NEMA3R enclosure
Ordering Information
PART* SIZE CURRENT (A) CT CURRENT RATIO
CT-0050-D10 5 - 7.5hp 27.5 - 42.1 50:5
CT-0075-D10 10hp 51 75:5
CT-0100-D10 15hp 75 100:5
* Current transformer sold separately
Model 235P
Shows Internal Connection
Single-Phase Pump Monitor
Motor and Pump Protection
For dimensional drawing see: Appendix page 511, Figure 15.
Protection Relays
© 2022 Littelfuse, Inc. 127
MOTOR & PUMP PROTECTION
7
235P
Accessories
Informer
A hand-held diagnostic tool that uses an infrared
receiver to access information which can be
helpful for troubleshooting the system. Includes
the Informer IR Kit-12
Specifications
Functional Specifications
Adjustments/Settings
Overcurrent 125% of calibration point
Underload (dry-well) Adjustable (70 to 90% of calibrated run power)
Overvoltage 265VAC
Undervoltage 190VAC
Number of restarts allowed
in a 60-sec. period
(rapid-cycling) 4
Trip Delay Times
Overcurrent 5 seconds
Dry-well 4 seconds
Restart Delay Times
Over/undervoltage 2 seconds
All other faults Manual, 2-225 Minutes
Input Characteristics
Supply Voltage 230VAC
Load Range 5 - 15 hp
Frequency 50*/60Hz
Output Characteristics
Output Contact Rating-SPST A300, 720A @240VAC (10 amps max.)
General Characteristics
Operating Temperature -40º to 60º C (-40º to 140º F)
Maximum Input Power 5 W
Wire Gauge Solid or Stranded 10 - 22AWG
Terminal Torque 13 in.-lbs.
Safety Marks
cUL Listed UL508, C22.2 No. 14
Dimensions H 73.66 mm (2.9”); W 133.35 mm (5.25”);
D 73.99 mm (2.913”)
Weight 14 oz.
Mounting Methods #8 screws
*Note: 50Hz will increase all delay timers by 20%)
Dimensions H 73.66 mm (2.9”); W 133.35 mm (5.25”);
D 73.99 mm (2.913”)
Weight 14 oz.
Mounting Methods #8 screws
Motor and Pump Protection
Littelfuse.com/235p
Protection Relays
128 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Motor and Pump Protection – Single and 3-Phase
Littelfuse.com/MP8000
MP8000
Bluetooth Overload Relay
Wiring Diagram
NO
(15)
C
(13)
I.2.
I.1
MP8000
PTC
(OPTIONAL)
RESET
FROM A2
PE
C
(95)
L1 L2 L3 A2/L
Z1 Z2 T1 T2
PHASE A
PHASE B
PHASE C
AUX VOLTAGE
SUPPLY
ZERO
SEQUENCE
CURRENT
TRANSFORMER
(OPTIONAL)
A B C
NO
(96)
NC
(14)
C
PILOT START C
STOP
HAND AUTO
OFF
FROM A1
M
A1/N
85 – 264 VAC
120 – 375 VDC
90 - 690 VAC
0.5 - 100A (100A+ using external CTs)
Ordering Information
MODEL LINE VOLTAGE MOTOR FULL AMP RANGE DESCRIPTION
MP8000
90-690VAC
(use of external potential transformers can
extend upper voltage range above 690VAC)
0.5-1,000A+ (external CTs required above 100A) Provides remote wired communication via
Ethernet Modbus TCP/IP
TYPICAL WIRING DIAGRAM FOR 3-PHASE
Patent Pending
Accessories
ZSCT Series Current Transformer
Used with Littelfuse relays to detect low levels
of earth-leakage current.
Description
The MP8000 is an advanced motor protection electronic
overload relay that is fully programmable via Bluetooth* using
the Littelfuse app on an Android* or iPhone* mobile device.
It is easy to use and arc-flash safety is increased because the
app allows settings to be modified and real-time operational
information viewed. Viewing operational information and faults
on the app does not require the user to open the control panel.
The MP8000 protects any motor drawing 0.5-1,000 full load
Amps (external CTs are required above 100 amperes). It is
designed for single or 3-phase systems with operating voltages
of 90-690 VAC (use of external potential transformers can extend
upper voltage range above 690 VAC). Common applications
include conveyor systems, HVAC equipment, saws and grinders,
fan motors, and almost any pumping application.
Protection is unsurpassed by combining overload, voltage,
phase loss and reversal, voltage and current unbalance, power
monitoring, and underload in one package. For standalone
applications, the Bluetooth interface can be used when paired
with a smartphone or tablet. The units also feature an Ethernet
communications port that can be used to form an Ethernet
Modbus TCP/IP network or Ethernet/IP. Units can be remotely
monitored and controlled from a PC, or SCADA system, and
data logging through a PC with the optional Solutions software
or other software program using the MP8000 memory map.
This capability allows for a simple cost-effective way to further
enhance arc-flash safety.
Features & Benefits
FEATURES BENEFITS
Bluetooth interface
Visual indication for programming, viewing
real-time voltage or current, and last fault
information (date and time stamped)
Programmable voltage
and current settings Allows usage on wide range of systems
3 selectable
restart options
Choose from automatic, semi-automatic, or
manual to best meet individual application needs
4 programmable
delay timers
Program separate delay times for power up, rapid cycle
protection, motor cool down, and underload restarting
Flexible reset Reset can be done through pushbutton on panel,
remotely via the network
Network
communications
capability
Compatible with Ethernet Modbus TCP/IP and
Ethernet/IP
For dimensional drawing see: Appendix page 516, Figure 50.
Protection Relays
© 2022 Littelfuse, Inc. 129
MOTOR & PUMP PROTECTION
7
Littelfuse.com/MP8000
MP8000
Advanced Features
■ Overload/Overpower (49)
■ Underload/Underpower (37P)
■ Overcurrent (51)/Jam
■ Undercurrent (37)
■ Current Unbalance/Phase Loss (46)
■ Phase Reversal (47)
■ Overvoltage (59)
■ Undervoltage (27)
■ Voltage Unbalance (47)
■ Rapid Cycling/Jog
■ Contactor Failure
■ Zero-Sequence Ground Fault (50Ns)
■ PTC Motor Overtemperature (49)
Specifications
Functional Characteristics
Frequency 50/60Hz
TC- Overcurrent Trip Class Trip class 02-60 or linear
Output Characteristics
Output Contact Rating
Control relay SPST - Form A
Auxiliary relay SPDT - Form C
Pilot Duty Rating B300
General Purpose 5A @ 240VAC
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 85°C (-40° to 185°F)
Accuracy
Voltage ±1% of reading ±0.5 V
Current ±2% (2 to 100 amperes direct)
Timing +/-0.5% of setting +/- 1second
GF Current ±5%
Repeatability
Voltage ±0.5%
Current ±1% (2 to 100 amps direct)
Power Consumption <5 W
Pollution Degree 3 (conformal coating standard)
Class of Protection IP20
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque (depluggable
terminal blocks) 5.5 in.-lbs.
Terminal Torque
(Earth Ground) 7.9 in.-lbs.
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity
(RFI), Conducted IEC 61000-4-6, Level 3 10V/m
Radio Frequency Immunity
(RFI), Radiated IEC 61000-4-3, Level 3 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
Surge IEC 61000-4-5, Level 3, 2kV line-to-line;
Level 4, 4kV line-to-ground
FCC Rating Part 15.107 for emissions,
Part 15.247 for intentional radiators
Short Circuit Withstand
Rating 100kA symmetrical at 690VAC
Hi-Potential Test Meets UL508 (2 x rated V +1000V for 1 minute)
Safety Marks
cULus UL60947, UL1053, C22.2 (File #E68520)
CE IEC 60947 Edition 5.2, IEC 60947-8
Maximum Conductor Size
(with insulation) 0.63”
Dimensions H 74.42 mm (2.93”); W 103.63 mm (4.08”);
D 121.67 mm (4.79”)
Weight 0.85 lbs (13.6 oz, 385.6 g)
Mounting Method Surface mount (4 - #8 screws)
or DIN-rail mount
Littelfuse Mobile App
Real Time Configuration Fault
MP8000
Littelfuse App icon
Motor and Pump Protection – Single and 3-Phase
Protection Relays
130 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Motor and Pump Protection – 3-Phase Motor Protection
777 SERIES
Description
The 777 is a fully programmable electronic overload relay
designed to protect any motor drawing 2-800 full load amps
(external CTs are required above 90 amps). The 777 (family
of products) is for 3-phase 200-480VAC applications, with
several specialized units for other voltage ranges and unique
applications. Common applications include conveyor systems,
HVAC equipment, saws and grinders, fan motors, and almost
any pumping application. Some unique applications include use
with a Subtrol® equipped Franklin submersible motor to detect
high motor temperatures and applications where a fast linear
trip is required.
All of the overload relays provide unsurpassed protection by
combining overload, voltage, phase loss and reversal, voltage
and current unbalance, power monitoring, and underload based
on current in one package. For standalone applications, the units
incorporate a 3-digit LED display that is used for programming,
providing real-time operational information and displaying
diagnostic codes to aid in troubleshooting a fault condition. The
units also feature a communications port that can be used with
communication modules listed in the 777 accessories section to
form a Modbus, DeviceNet™, Profibus, or Ethernet network. Up
to 99 units can be remotely monitored and controlled from a PC,
PLC, or SCADA system, and data logging through a PC with the
optional Solutions software. This capability allows for a simple,
cost-effective way to meet new requirements for arc-flash safety.
Features & Benefits
FEATURES BENEFITS
Built-in display Visual indication for programming, viewing real-time
voltage or current, and last fault code
Programmable voltage
and current settings Allows usage on wide range of systems
3 selectable
restart options
Choose from automatic, semi-automatic, or manual to
best meet individual application needs
3 programmable restart
delay timers
Program separate restart delay time for rapid cycle
protection, motor cool down, and dry-well recovery
Remote display
compatibility
Increases safety through remote display of real-time
data and fault history, without the need to open the
cabinet. Aids with arc flash safety regulations
Flexible reset
Reset can be done through pushbutton on relay or
remotely with optional 777-MRSW or OL-RESET
remote reset kit
Network
communications
capability
Compatible with Modbus, DeviceNet™, Profibus, or
Ethernet using optional communications module
3-Phase Current & Voltage Monitor
Wiring DiagramTYPICAL WIRING DIAGRAM FOR MODEL 777
(20 TO 90 amps)
LITTELFUSE RECOMMENDS
USING CTs WITH TERMINALS TO
SIMPLIFY INSTALLATION.
12 - 16 AWG
STRANDED
WIRE
Ordering Information
See next page.
TYPICAL WIRING DIAGRAM FOR MODEL 777 (2 to 90 amps)
CURRENT TRANSFORMER WIRING DIAGRAM FOR MODEL 777
(80 to 800 amps)
Littelfuse.com/com/777
For dimensional drawing see: Appendix page 507, Figure 1.
Protection Relays
© 2022 Littelfuse, Inc. 131
MOTOR & PUMP PROTECTION
7
Littelfuse.com/777
Ordering Information
MODEL LINE VOLTAGE MOTOR FULL
AMP RANGE DESCRIPTION
777-P2 200-480VAC 2-800A (external CTs
required above 90A)
Provides low and high power trip*, linear overcurrent trip, and 480VA @ 240VAC output SPDT
relay contacts
777-LR-P2 200-480VAC 1-800A (external CTs
required above 9A) Protects low range motors when wired directly or with 10-800 FLA with use of external CTs
777-HVR-P2 340-480VAC 2-800A (external CTs
required above 90A)
Provides low and high power trip*, linear overcurrent trip, and 470VA @ 600VAC output SPDT
relay contacts. Required when a control power transformer (CPT) is not used with a 480V system
777-HVR-LR-P2 340-480VAC 1-800A (external CTs
required above 9A)
Provides low and high power trip*, linear overcurrent trip, and 470VA @ 600VAC output SPDT
relay contacts. Required when a control power transformer (CPT) is not used with a 480V system
777-575-P2 500-600VAC 2-800A (external CTs
required above 90A)
Provides low and high power trip*, linear overcurrent trip, and 480VA @ 240VAC output SPDT
relay contacts. Used in Canada and NE USA where 575V utility power services are common
777-575-LR-P2 500-600VAC 1-800A (external CTs
required above 9A)
Provides low and high power trip*, linear overcurrent trip, and 480VA @ 240VAC output SPDT
relay contacts. Used in Canada and NE USA where 575V utility power services are common
777-MV-P2 100-240VAC 10-800A with
external CTs
Provides low and high power trip*, linear overcurrent trip, and 480VA @ 240VAC output SPDT
relay contacts. Designed for Medium Voltage applications where both PTs and CTs are used. Has
built in multipliers for 25.5, 50.5, 100.5 CTs. The voltage unbalance, single-phase and reverse
phase protection can be disabled for applications where only the PTs are used
777-HRG-P2 200-480VAC 2-90A only
Provides low and high power trip*, linear overcurrent trip, and 480VA @ 240VAC output SPDT
relay contacts. Designed for high resistance grounding systems that incorporate an external
zero-sequence CT that correspond with the built in multipliers to detect ground faults
777-LR-HRG-P2 200-480VAC 10-800A (external CTs
required, external
Overload relays designed for high resistance grounding systems that incorporate an external
zero-sequence CTs that correspond with the built in multipliers to detect ground faults
777-575-HRG-P2 500-600VAC 2-90A only
Provides low and high power trip*, linear overcurrent trip, and 480VA @ 240VAC output SPDT
relay contacts. Used in Canada and NE USA where 575V utility power services are common.
Designed for high resistance grounding systems that incorporate an external zero-sequence CT
that correspond with the built in multipliers to detect ground faults
777-575-LR-HRG-P2 500-600VAC 10-800A with
external CTs
Provides low and high power trip*, linear overcurrent trip, and 480VA @ 240VAC output SPDT
relay contacts. Used in Canada and NE USA where 575V utility power services are common.
Designed for high resistance grounding systems that incorporate an external zero-sequence CT
that correspond with the built in multipliers to detect ground faults
777-FT 200-480VAC 2-800A (external CTs
required above 90A)
Provides linear overcurrent trip and 480VA @ 240VAC output SPDT relay contacts. Also known
as shock relay, it is designed for fast linear trip applications. Overcurrent trip delay can be set
ranging from less than 500ms - 70 seconds. Low trip delay is ideal in chain drive and drive
linkage applications to prevent breaking in overload or jam situations. Other applications include
sewage clarifiers, mixers, augers, and conveyors. Longer trip delay is ideal for motor test panels
in rewind shops. Also includes adjustable motor acceleration time and overcurrent trip delay
time when the faster linear trip mode is used
777-TS 200-480VAC 2-800A (external CTs
required above 90A)
Provides 480VA @ 240VAC output SPDT relay contacts. For use with Subtrol® equipped Franklin
submersible motors to detect high motor temperatures
777-LR-TS 200-480VAC 1-9A only Provides 480VA @ 240VAC output SPDT relay contacts. For use with Subtrol® equipped Franklin
submersible motors to detect high motor temperatures
777-575-TS 500-600VAC 2-800A (external CTs
required above 90A)
Provides 480VA @ 240VAC output SPDT relay contacts. For use with Subtrol® equipped Franklin
submersible motors with nominal 500-600VAC range to detect high motor temperatures
777VA-02 200-480VAC 2-800A (external CTs
required above 90A)
Provides low and high power trip*, linear overcurrent trip, and 480VA @ 240VAC output SPDT
relay contacts. Has restart delay 1 setpoints of 2-500 minutes and undercurrent trip delay
setpoints of 2-60 minutes.
777VA-03 200-480VAC 2-800A (external CTs
required above 90A)
Provides low and high power trip*, linear overcurrent trip, and 480VA @ 240VAC output SPDT
relay contacts. For use with static and rotary single to 3-phase converters. High and low
voltage trip feature only applies to the utility supplied power. Works well with unloaded phase
converters because the relay ignores severely unbalanced voltages
* Network programmable only
777 SERIES
Motor and Pump Protection – 3-Phase Motor Protection
Protection Relays
132 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
777 SERIES
Accessories
RS485MS-2W Communication Module
Required to enable the Modbus communications
function on Model 77X-type products.
CIO-MB/CIO-120-MB Communication Module
Modbus-RTU interfaces capable of providing
discrete control and monitoring of an overload
relay over a Modbus network.
CIO-DN-P/CIO-120-DN-P
Communication Module
DeviceNet™ interfaces capable of providing
discrete control and monitoring of motor
starters, drives and other devices over a
DeviceNet™ network.
CIO-777-PR Communication Module
Profibus interface capable of providing discrete
control and monitoring of motor starters, drives
and other devices over a Profibus network.
CIO-EN (non-POE) Communication Module
Modbus-TCP and Modbus-RTU interface capable
of providing discrete control and monitoring of an
overload relay over a Modbus network.
Communication Adapters
• RS485-RS232–Converter with cable & plug
• RS485-USB–Converter with cable & plug
• RS232-USB–Converter
Specifications match industry standard.
RM1000 Remote Monitor
The RM1000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring for up to 16 devices.
RM2000 Remote Monitor
The RM2000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring with event storage and real-time
clock for date and time stamp.
Solutions Software: Solutions-M
Software features include data logging, real-time
data monitoring and fault and event monitoring.
777-MRSW Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
OL-RESET Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
Specifications
Functional Characteristics
Frequency 50/60Hz
TC- Overcurrent Trip Class
(777 Plus Series units) 02-60, J02-J60, L00-L60 or Off
TC- Overcurrent Trip Class
(77C, 777 non-Plus
Series units) 5, 10, 15, 20, 30
(J prefix enables jam protection feature)
Output Characteristics
Output Contact Rating
(SPDT - Form C)
Pilot duty rating 480VA @ 240VAC, B300
General purpose 10A @ 240VAC
Pilot duty rating for
HVR models 470VA @ 600VAC, B600
General Characteristics
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Accuracy
Voltage ±1%
Current ±3%(<100 amps direct)
GF Current ±15%
Timing (777 Plus Series units) ±0.5 second
Timing (77C, 777 non-Plus
Series units) 5% +1 second
Repeatability
Voltage ±0.5% of nominal voltage
Current ±1% (<100 amps direct)
Maximum Input Power 10 W
Pollution Degree 3
Class of Protection IP20
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 7 in.-lbs.
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity
(RFI), Conducted IEC 61000-4-6, Level 3 10V/m
Radio Frequency Immunity
(RFI), Radiated IEC 61000-4-3, Level 3 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
Short Circuit 100kA
Surge
IEC 61000-4-5, Level 3, 2kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance to a
level of 6kV line-to-line
Hi-potential Test Meets UL508 (2 x rated V +1000V for 1 minute)
Vibration IEC 68-2-6, 10-55Hz, 1mm peak-to-peak,
2 hours, 3 axis
Shock IEC 68-2-27, 30g, 3 axis, 11ms duration,
half-sine pulse
Motor and Pump Protection – 3-Phase Motor Protection
Littelfuse.com/777
Protection Relays
© 2022 Littelfuse, Inc. 133
MOTOR & PUMP PROTECTION
7
Littelfuse.com/777
777 SERIES
Motor and Pump Protection – 3-Phase Motor Protection
Safety Marks
UL UL508, UL1053 (File #E68520)
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2 No. 14
Maximum Conductor Size
(with insulation) through
777/77C 0.65”
Dimensions H 77.47 mm (3.05”); W 97.79 mm (3.85”);
D 128.27 mm (5.05”)
Weight 1.56 lbs. (24.96 oz., 707.6 g)
Mounting Method Surface mount (4 - #8 screws) or DIN rail mount
Protection Relays
134 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/777-77c
777 / 77C SERIES
Description
The 777/ 77C Series is a fully programmable electronic overload
relay designed to protect any motor drawing 2-800 full load
amps (external CTs are required above 90 amps). Common
applications include conveyor systems, HVAC equipment, saws
and grinders, fan motors, and almost any pumping application.
All of the overload relays provide unsurpassed protection by
combining overload, underload, and voltage in one package.
For standalone applications, the units incorporate a 3-digit
LED display that is used for programming, providing real-time
operational information and displaying diagnostic codes to aid
in troubleshooting a fault condition. The units also feature a
communications port that can be used with communication
modules listed in the 777 accessories section to form a
Modbus, DeviceNet™, Profibus, or Ethernet network. Up to
99 units can be remotely monitored and controlled from a PC,
PLC, or SCADA system, and data logging through a PC with
the optional Solutions software. This capability allows for a
simple, cost-effective way to meet new requirements for
arc-flash safety.
Features & Benefits
FEATURES BENEFITS
Built-in display Visual indication for programming, viewing real-time
voltage or current, and last fault code
Programmable voltage
and current settings Allows usage on wide range of systems
3 selectable
restart options
Choose from automatic, semi-automatic, or manual to
best meet individual application needs
3 programmable restart
delay timers
Program separate restart delay time for rapid cycle
protection, motor cool down, and dry-well recovery
Remote display
compatibility
Increases safety through remote display of real-time
data and fault history, without the need to open the
cabinet. Aids with arc flash safety regulations
Flexible reset
Reset can be done through pushbutton on relay or
remotely with optional 777-MRSW or OL-RESET
remote reset kit
Network
communications
capability
Compatible with Modbus, DeviceNet™, Profibus, or
Ethernet using optional communications module
Ordering Information
MODEL LINE VOLTAGE MOTOR FULL
AMP RANGE DESCRIPTION
77C 100-240VAC
2-800A (external
CTs required
above 90A)
Provides 480VA @ 240VAC
output SPDT relay contacts
77C-LR 100-240VAC 1-9A only Provides 480VA @ 240VAC
output SPDT relay contacts
777-
HVR-SP 340-480VAC
2-800A (external
CTs required
above 90A)
Provides 470VA @ 600VAC
output SPDT relay contacts.
For systems with no control
power transformer
Single-Phase Current & Voltage Monitor
Wiring Diagram
A B C
LITTELFUSE RECOMMENDS USING CTs THAT HAVE TERMINALS
TO AID CONVENIENCE WHEN INSTALLING CTs.
NOTE: PHASES A & C ARE INACTIVE. USE PHASE B FOR ALL ACTIVE
CURRENT MEASUREMENTS. CT SECONDARY MUST MAKE FIVE
PASSES THROUGH THE PHASE B CONDUCTOR WINDOW.
TYPICAL WIRING DIAGRAM FOR MODEL 77C WITH MOTOR CONTROL
TYPICAL WIRING DIAGRAM FOR MODEL 77C WITH EXTERNAL CT
Motor and Pump Protection – Single-Phase Motor Protection
For dimensional drawing see: Appendix page 507, Figure 1.
Protection Relays
© 2022 Littelfuse, Inc. 135
MOTOR & PUMP PROTECTION
7
777 / 77C SERIES
Accessories
RS485MS-2W Communication Module
Required to enable the Modbus communications
function on Model 77X-type products.
Communication Adapters
• RS485-RS232–Converter with cable & plug
• RS485-USB–Converter with cable & plug
• RS232-USB–Converter
Specifications match industry standard.
RM1000 Remote Monitor
The RM1000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring for up to 16 devices.
RM2000 Remote Monitor
The RM2000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring with event storage and real-time
clock for date and time stamp.
Solutions Software: Solutions-M
Software features include data logging, real-time
data monitoring and fault and event monitoring.
777-MRSW Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
OL-RESET Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
Specifications
Frequency 50/60Hz
Functional Characteristics
TC- Overcurrent Trip Class
(77C, 777 non-Plus
Series units) 5, 10, 15, 20, 30 (J prefix enables jam
protection feature)
Output Characteristics
Output Contact Rating
(SPDT - Form C)
Pilot duty rating 480VA @ 240VAC, B300
General purpose 10A @ 240VAC
Pilot duty rating for
HVR models 470VA @ 600VAC, B600
General Characteristics
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Accuracy
Voltage ±1%
Current ±3%(<100 amps direct)
GF Current ±15%
Timing (77C, 777 non-Plus
Series units) 5% +1 second
Repeatability
Voltage ±0.5% of nominal voltage
Current ±1% (<100 amps direct)
Maximum Input Power 10 W
Pollution Degree 3
Class of Protection IP20
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 7 in.-lbs.
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity
(RFI), Conducted IEC 61000-4-6, Level 3 10V/m
Radio Frequency Immunity
(RFI), Radiated IEC 61000-4-3, Level 3 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
Short Circuit 100kA
Surge
IEC 61000-4-5, Level 3, 2kV line-to-line; Level 4,
4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance to a
level of 6kV line-to-line
Hi-potential Test Meets UL508 (2 x rated V +1000V for 1 minute)
Vibration IEC 68-2-6, 10-55Hz, 1mm peak-to-peak,
2 hours, 3 axis
Shock IEC 68-2-27, 30g, 3 axis, 11ms duration,
half-sine pulse
Safety Marks
UL UL508, UL1053 (File #E68520)
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2
Maximum Conductor Size
(with insulation) through
777/77C 0.65”
Dimensions H 77.47 mm (3.05”); W 97.79 mm (3.85”);
D 128.27 mm (5.05”)
Weight 1.56 lbs. (24.96 oz., 707.6 g)
Mounting Method Surface mount (4 - #8 screws) or DIN rail mount
Motor and Pump Protection – Single-Phase Motor Protection
Littelfuse.com/777-77c
Protection Relays
136 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/777kwhpp2
777-KW/HP-P2 SERIES
Description
The 777-KW/HP-P2 Series has the overload, voltage, phase loss
and reversal, voltage and current unbalance, current and power
monitoring*, and underload trip based on power in one package.
The underpower trip feature is desirable anytime the current vs.
load characteristic is non-linear or has little change. In general
terms, smaller motors and slow-speed motors have little change
in current over the normal load range. Larger motors that are
running light loads will also show small current changes over
the operating load range. For standalone applications, the units
incorporate a 3-digit LED display that is used for programming,
providing real-time operational information and displaying
diagnostic codes to aid in troubleshooting a fault condition.
No Load
Power
Current
Full Load No Load Full Load
Power is Linear, equal
sensitivity at both
low and high
loads.
Current is not linear, low
sensitivity for low loads
and high sensitivity
for high loads.
The units also feature a communications port that can be used
with communication modules listed in the 777 accessories
section to form a Modbus, DeviceNet™, Profibus, or Ethernet
network. Up to 99 units can be remotely monitored and
controlled from a PC, PLC, or SCADA system, and data logging
through a PC with the optional Solutions software.
* Low current trip and high power trip are network programmable only
Features & Benefits
FEATURES BENEFITS
Low and High
Power Protection
Increases reliability for non-linear motors where the
load characteristic has little change
Built-in Display
Visual indication for programming, viewing real-time
voltage, current, kilowatts, or horsepower, and last
fault code
Programmable voltage
and current settings Allows usage on wide range of systems
3 selectable
restart options
Choose from automatic, semi-automatic, or manual
to best meet individual application needs
3 programmable restart
delay timers
Program separate restart delay time for rapid cycle
protection, motor cool down, and dry-well recovery
Remote display
compatibility
Increases safety through remote display of real-time
data and fault history, without the need to open the
cabinet. Aids with arc flash safety regulations
Flexible reset
Reset can be done through pushbutton on relay or
remotely with optional 777-MRSW or OL-RESET
remote reset kit
Network
communications
capability
Compatible with Modbus, DeviceNet™, Profibus, or
Ethernet using optional communications module
3-Phase Current & Voltage Monitor
Wiring Diagram
Figure 1: Typical Wiring Diagram
TO MOTOR
CONTACTOR
COIL
CONTROL
POWER
START
AUTO
STOP
2 3
A C B
M
LITTELFUSE RECOMMENDS
USING CTs WITH TERMINALS
TO SIMPLIFY INSTALLATION.
12 - 16 AWG
STRANDED
WIRE
All CTs must face the same direction, and all CT
secondaries must be wired identically, i.e. all X1
terminals enter the main (round) window and return
to H1 terminal after exiting the loop conductor
window (rectangle). Every CT secondary must
make 5 passes through the corresponding main
conductor window.
TYPICAL WIRING DIAGRAM FOR 777-KW/HP-P2 SERIES
CURRENT TRANSFORMER WIRING DIAGRAM
FOR 777-KW/HP-P2 SERIES
Motor and Pump Protection – 3-Phase Pump Protection
For dimensional drawing see: Appendix page 507, Figure 1.
Protection Relays
© 2022 Littelfuse, Inc. 137
MOTOR & PUMP PROTECTION
7
777-KW/HP-P2 SERIES
RS485MS-2W Communication Module
Required to enable the Modbus communications
function on Model 77X-type products.
CIO-MB/CIO-120-MB Communication Module
Modbus-RTU interfaces capable of providing
discrete control and monitoring of an overload
relay over a Modbus network.
CIO-DN-P/CIO-120-DN-P
Communication Module
DeviceNet™ interfaces capable of providing
discrete control and monitoring of motor
starters, drives and other devices over a
DeviceNet™ network.
CIO-777-PR Communication Module
Profibus interface capable of providing discrete
control and monitoring of motor starters, drives
and other devices over a Profibus network.
CIO-EN (non-POE) Communication Module
Modbus-TCP and Modbus-RTU interface capable
of providing discrete control and monitoring of an
overload relay over a Modbus network.
Communication Adapters
• RS485-RS232–Converter with cable & plug
• RS485-USB–Converter with cable & plug
• RS232-USB–Converter
Specifications match industry standard.
RM1000 Remote Monitor
The RM1000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring for up to 16 devices.
RM2000 Remote Monitor
The RM2000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring with event storage and real-time
clock for date and time stamp.
Solutions Software: Solutions-M
Software features include data logging, real-time
data monitoring and fault and event monitoring.
777-MRSW Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
OL-RESET Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
Ordering Information
MODEL LINE VOLTAGE MOTOR FULL AMP RANGE DESCRIPTION
777-KW/HP-P2 200-480VAC
(3-phase)
2-800A (external CTs
required above 90A) Provides 480VA @ 240VAC output SPDT relay contacts
777-LR-KW/HP-P2 200-480VAC
(3-phase)
1-800A (external CTs
required above 9A) Provides 480VA @ 240VAC output SPDT relay contacts
777-HVR-KW/HP-P2 340-480VAC
(3-phase)
2-800A (external CTs
required above 90A)
Provides 470VA @ 600VAC output SPDT relay contacts. Required when a CPT (control
power transformer) is not used on a 480V system. Commonly used in pumping applications
to save the cost and extra wiring associated with a CPT
777-575-KW/HP-P2 500-600VAC
(3-phase)
2-800A (external CTs
required above 90A)
Provides 480VA @ 240VAC output SPDT relay contacts. Used in Canada and NE USA
where 575V utility power services are common
777-MLR-KW/HP-P2 200-480VAC
(3-phase)
0.5-21A and 40-740A
with external CTs
Provides 480VA @ 240VAC output SPDT relay contacts. It is wired directly without the
need to loop conductors for 5-21 amps (under 5 amps requires looping of conductors), and
can be used with external CTs for 40-740 amps
Accessories
Motor and Pump Protection – 3-Phase Pump Protection
Littelfuse.com/777kwhpp2
Protection Relays
138 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/777kwhpp2
Specifications
Frequency 50/60Hz
Functional Characteristics
TC-Overcurrent Trip Class 02-60, J02-J60, L00-L60 or OFF
Output Characteristics
Output Contact Rating
(SPDT - Form C)
Pilot duty rating 480VA @ 240VAC, B300
General purpose 10A @ 240VAC
Pilot duty rating for
HVR model 470VA @ 600VAC, B600
General Characteristics
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Accuracy
Voltage ±1%
Current ±3% (<100 amps direct)
Power ±4% (<100 amps direct)
GF Current ±15%
Timing ±0.5 second
Repeatability
Voltage ±0.5% of nominal voltage
Current ±1% (<100 amps direct)
Power ±2%
Maximum Input Power 10 W
Pollution Degree 3
Class of Protection IP20
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 7 in.-lbs.
Standards Passed
Electrostatic Discharge
(ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity
(RFI), Conducted IEC 61000-4-6, Level 3 10V/m
Radio Frequency Immunity
(RFI), Radiated IEC 61000-4-3, Level 3 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5 kV input power
Short Circuit Rating 100kA
777-KW/HP-P2 SERIES
Surge
IEC 61000-4-5, Level 3, 2kV line-to-line; Level 4,
4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance to a
level of 6kV line-to-line
Hi-potential Test Meets UL508
(2 x rated V +1000V for 1 minute)
Vibration IEC 68-2-6, 10-55Hz, 1mm peak-to-peak,
2 hours, 3 axis
Shock IEC 68-2-27, 30g, 3 axis, 11ms duration,
half-sine pulse
Safety Marks
UL UL508, UL1053 (File #E68520)
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2 No. 14
Maximum Conductor Size
(with insulation)
through 777 0.65”
Dimensions H 77.47 mm (3.05”); W 97.79 mm (3.85”);
D 128.27 mm (5.05”)
Weight 1.56 lbs. (24.96 oz., 707.6 g)
Mounting Method Surface mount (4 - #8 screws) or
DIN rail mount
Motor and Pump Protection – 3-Phase Pump Protection
Protection Relays
© 2022 Littelfuse, Inc. 139
MOTOR & PUMP PROTECTION
7
Littelfuse.com/777accupower
777-ACCUPOWER
Description
The 777-AccuPower is a fully-programmable 3-phase motor and
pump protection relay. It allows motor hp rating, full load amps,
efficiency and power factor to be entered and will accurately
calculate motor output power. This is most useful with
mag-drive pumps or process applications where the process
power is desired over the utility power. Voltage, current
and power measurements can be displayed as well as fault
information and setpoints. The built-in display simplifies
troubleshooting and allows the user to easily and precisely
configure setpoints. The 777-AccuPower can be used with the
optional COM 4-20 output module to give an analog signal
proportional to output shaft power, the RS485MS-2W (for limited
Modbus capabilities, and for use with the RM1000/RM2000)
remote displays listed in the 777 accessories section.
Features & Benefits
FEATURES BENEFITS
Motor output power
measurement Allows use of process power over utility power
3 programmable restart
delay timers
Program separate restart delay time for rapid cycle
protection, motor cool down, and dry-well recovery
Built-in Display Visual indication for programming, viewing real-time
voltage or current, and last fault code
Remote display
compatibility
Increases safety through remote display of run-hour
meter, last four fault codes, without the need to open
the cabinet. Aids with arc flash safety regulations
Network
communications
capability
Limited Modbus capabilities using RS485MS-2W
communication module
Accessories
RS485MS-2W Communication Module
Required to enable the Modbus communications
function on Model 77X-type products.
COM 4-20 Output Communication Module
This module allows communication to a PLC
with an analog input and no Modbus input.
RM1000 Remote Monitor
The RM1000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring for up to 16 devices.
RM2000 Remote Monitor
The RM2000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring with event storage and real-time
clock for date and time stamp.
3-Phase Current & Voltage Monitor
Wiring Diagram
Figure 1: Typical Wiring Diagram
TO MOTOR
CONTACTOR
COIL
CONTROL
POWER
START
AUTO
STOP
2 3
A C B
M
LITTELFUSE RECOMMENDS
USING CTs WITH TERMINALS
TO SIMPLIFY INSTALLATION.
12 - 16 AWG
STRANDED
WIRE
All CTs must face the same direction, and all CT
secondaries must be wired identically, i.e. all X1
terminals enter the main (round) window and return
to H1 terminal after exiting the loop conductor
window (rectangle). Every CT secondary must
make 5 passes through the corresponding main
conductor window.
TYPICAL WIRING DIAGRAM FOR MODEL 777-ACCUPOWER
CURRENT TRANSFORMER WIRING DIAGRAM
OR MODEL 777-ACCUPOWER
Motor and Pump Protection – 3-Phase Pump Protection
For dimensional drawing see: Appendix page 507, Figure 1.
Protection Relays
140 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/777accupower
777-ACCUPOWER
Specifications
Input Characteristics
Line Voltage 200-480VAC
Frequency 50/60Hz
Motor Full Load Amp Range 2-800A (external CTs required over 90A)
Functional Characteristics
TC- Overcurrent Trip Class 5, 10, 15, 20, 30 (J prefix enables jam
protection feature)
Output Characteristics
Output Contact Rating
(SPDT - Form C)
Pilot duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Accuracy
Measured Horsepower/
Kilowatt
Typical ±3%*
Voltage ±1%
Current ±3%(<100 amps direct)
GF Current ±15%
Timing 5% ±1 second
Repeatability
Voltage ±0.5% of nominal voltage
Current ±1% (<100 amps direct)
Maximum Input Power 10 W
Pollution Degree 3
Class of Protection IP20, NEMA 1 (finger safe)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 7 in.-lbs.
Standards Passed
Electrostatic Discharge
(ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity
(RFI), Conducted IEC 61000-4-6, Level 3 10V/m
Radio Frequency Immunity
(RFI), Radiated IEC 61000-4-3, Level 3 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5 kV input power
Short Circuit Rating 100kA
Surge
IEC 61000-4-5 Level 3, 2kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance
to a level of 6kV line-to-line
Hi-Potential Test Meets UL508 (2 x rated V + 1000V for 1 min.)
Vibration IEC 68-2-6, 10-55Hz, 1mm peak-to-peak,
2 hrs, 3 axis
Shock IEC 68-2-27, 30g, 3 axis, 11ms duration,
half-sine pulse
Safety Marks
UL UL508, UL1053
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2
Max. Conductor Size
through 777 0.65” with insulation
Dimensions H 77.47 mm (3.05”); W 97.79 mm (3.85”);
D 128.27 mm (5.05”)
Weight 1.3 lbs. (20.8 oz., 589.67 g)
Mounting Method Surface mount (4 - #8 screws) or
DIN rail mount
*On a well balanced system within recommended current range.
Motor and Pump Protection – 3-Phase Pump Protection
Protection Relays
© 2022 Littelfuse, Inc. 141
MOTOR & PUMP PROTECTION
7
77C-KW/HP SERIES
Description
The 77C-KW/HP and 77C-LR-KW/HP are fully programmable
pump protection relays which will monitor the voltage and
current for high or low voltage, overload and underload
conditions based on power, in one package. The underpower trip
feature is desirable anytime the current vs.load characteristic is
non-linear or has little change. In general terms, smaller motors
and slow-speed motors have little change in current over the
normal load range. Larger motors that are running light loads will
also show small current changes over the operating load range.
Common uses include pumping applications where motors run
slower than around 3400 rpm and usually have small current vs
load changes; such as slow speed mixer or agitator motors up to
50 hp, and magdrive or can pumps.
No Load
Power
Current
Full Load No Load Full Load
Power is Linear, equal
sensitivity at both
low and high
loads.
Current is not linear, low
sensitivity for low loads
and high sensitivity
for high loads.
The Littelfuse PumpSaver relay provides the high sensivity of a
power monitor to protect pump motors from dry run and deadhead conditions.
Features & Benefits
FEATURES BENEFITS
Underload protection Increases reliability for non-linear motors where the
load characteristic has little change
Built-in display
Visual indication for programming, viewing real-time
voltage, current, kilowatts or horsepower, and last
fault code
15 programmable
criteria settings
Allows user flexibility to fine-tune the relay for
maximum protection in any application.
Last fault memory Provides instant troubleshooting diagnostics
Remote display
compatibility
Increases safety through remote display of real-time
data and fault history, without the need to open the
cabinet. Aids with arc flash safety regulations.
Flexible reset
Reset options: automatic, manual using pushbutton
on relay, or remotely with optional 777-MRSW or
OL-RESET remote reset kit.
Network
communications
capability
Compatible with Modbus using optional
communications module (RS485MS-2W)
Single-Phase Current & Voltage Monitor
Wiring Diagram
CONTROL POWER
NOTE: PHASES A & C ARE INACTIVE.
240 VAC OR LESS
PILOT AUTO
STOP
M OFF
START
HAND
CONTACTOR
COIL
A B C
TO MOTOR
L1 L2
A B C
LITTELFUSE RECOMMENDS USING CTs THAT HAVE TERMINALS TO AID
CONVENIENCE WHEN INSTALLING CTs.
NOTE: PHASES A & C ARE INACTIVE. USE PHASE B FOR ALL ACTIVE
CURRENT MEASUREMENTS. CT SECONDARY MUST MAKE FIVE
PASSES THROUGH THE PHASE B CONDUCTOR WINDOW.
NOTE: OTHER NECESSARY CONNECTIONS ARE NOT SHOWN
A B
10 - 12 AWG
STRANDED WIRE
PILOT DUTY RATING
120-240VAC 1Ø 480VA AT 240VAC
50/60 HZ
1Ø
MOTOR
TYPICAL WIRING DIAGRAM FOR MODEL 77C-KW/HP
WITH MOTOR CONTROL
TYPICAL WIRING DIAGRAM FOR MODEL 77C-KW/HP WITH EXTERNAL CT
Ordering Information
MODEL LINE
VOLTAGE
MOTOR FULL
AMP RANGE DESCRIPTION
77C-KW/HP 100-240VAC 2-90A (external CTs
required above 90A)
Provides 480VA @
240VAC output SPDT
(Form C) relay contacts
77C-LR-KW/HP 100-240VAC 1-9A (external CTs
required above 9A)
Provides 480VA @
240VAC output SPDT
(Form C) relay contacts
Motor and Pump Protection – Single-Phase Pump Protection
Littelfuse.com/77ckwhp
For dimensional drawing see: Appendix page 507, Figure 1.
Protection Relays
142 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/77ckwhp
77C-KW/HP SERIES
Accessories
RS485MS-2W Communication Module
Required to enable the Modbus communications
function on Model 77X-type products.
Communication Adapters
• RS485-RS232–Converter with cable & plug
• RS485-USB–Converter with cable & plug
• RS232-USB–Converter
Specifications match industry standard.
RM1000 Remote Monitor
The RM1000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring for up to 16 devices.
RM2000 Remote Monitor
The RM2000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring with event storage and real-time
clock for date and time stamp.
Solutions Software: Solutions-M
Software features include data logging, real-time
data monitoring and fault and event monitoring.
777-MRSW Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
OL-RESET Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
Specifications
Input Characteristics
Supplt Voltage 100-240 VAC, 1Ø
Frequency 50-60 Hz
Motor Full Load Amp Range
77C-KW/HP 2-25 Amps (Loops Required)
26-90 Amps (Direct)
91-800 Amps (External CT’s)
77C-LR-KW/HP 1.0 Amps - 2.0 Amps (additional Loop)
2.0 Amps - 9.0 Amps (Direct)
Short Circuit Withstand
Rating 100kA per UL and CSA
Power Consumption 5W (Maximum)
Output Contact Rating SPDT
(Form C) Pilot duty rating: 480 VA @ 240 VAC
General purpose: 10A @ 240 VAC
Expected Life
Mechanical 1 x 106
operations
Electrical 1 x 105
operations at rated load
Accuracy at 25° C (77° F)
Voltage ±1%
Current ±3% (Direct, No External CTs)
Timing 5% ± 1 second
Repeatability
Voltage ± 0.5% of nominal voltage
Current ± 1% (Direct, No External CTs)
Safety Marks
UL UL508, UL1053
CE IEC 60947-1, IEC 60947-5-1
CSA C22.2 No. 14
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity
(RFI), Conducted IEC 61000-4-6, Level 3 10V/m
Radio Frequency Immunity
(RFI), Radiated IEC 61000-4-3, Level 3 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
Surge
IEC IEC 61000-4-5, Level 3, 2kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave compliance to a
level of 6kV line-to-line
Hi-potential Test Meets UL508 (2 x rated V +1000V for 1 min.)
Vibration IEC 68-2-6, 10-55Hz, 1mm peak-to-peak,
2 hours, 3 axis
Shock IEC 68-2-27, 30g, 3 axis, 11ms duration,
half-sine pulse
Mechanical
Dimensions H 77.47 mm (3.05”); W 97.79 mm (3.85”);
D 128.27 mm (5.05”)
Maximum conductor
size through holes 0.65” (with insulation)
Terminal Torque 7 in.-lbs.
Enclosure Material polycarbonate
Weight 1.2 lbs
Mounting Methods 35mm DIN rail or surface mount
Motor and Pump Protection – Single-Phase Pump Protection
Protection Relays
© 2022 Littelfuse, Inc. 143
MOTOR & PUMP PROTECTION
7
77C-KW/HP SERIES
Environmental
Temperature Range
Ambient Operating -20° - 70° C (-4° - 158°F)
Ambient Storage -40° - 80° C (-40° - 176°F)
Pollution Degree 3
Class of Protection IP20, NEMA 1
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Programmable
Operating Points Range
LV- Low Voltage Threshold 85V - HV Setting
HV- High Voltage Threshold LV Setting - 264V
MULT- # of Conductors or
CT Ratio (XXX:5)
77C: 1-10 Conductors or 100-800 Ratio
77C-LR: 1 or 2
OC- Overcurrent Threshold (20-100A) ÷ MULT or 80-120% of CT Primary
TC- Overcurrent Trip Class * 5, J5, 10, J10, 15, J15, 20, J20, 30, J30, or
LIn (linear)
RD1- Rapid Cycle Timer 0, 2 - 500 Seconds
RD2- Restart Delay After All
Faults Except Undercurrent
(motor cool down timer)** 2 - 500 Minutes/Seconds
RD3- Restart Delay
After Undercurrent
(dry well recovery timer) 2 - 500 Minutes/Seconds
#RU- Number of Restarts
After Undercurrent 0, 1, 2, 3, 4, A (Automatic)
ADDR- RS485 Address A01- A99
#RO-Number of Restarts
After Overcurrent 0, 1, 2, 3, 4, A (Automatic)
LP/PWS (PWS = LP Range) 1 = 0.01 - 0.99 KW 5 = 0.01 - 1.30 HP
2 = 1.00 - 9.95 KW 6 = 1.34 - 13.3 HP
3 = 10.0 - 99.5 KW 8 = 13.4 - 133 HP
4 = 100 - 650 KW 9 = 134 - 871 HP
* If J Prefix is displayed in trip class setting, jam protection is enabled. If programmed to Lln
position, overcurrent trip delays are fixed linear-type delays set in OPT1 position.
** RD2 & RD3 can be changed from minutes to seconds under program position OPT2.
SETTING RD2 RD3 SETTING RD2 RD3
0 Minutes Minutes 2 Seconds Minutes
1 Minutes Seconds 3 Seconds Seconds
Motor and Pump Protection – Single-Phase Pump Protection
Littelfuse.com/77ckwhp
Protection Relays
144 © 2022 Littelfuse, Inc.
MOTOR & PUMP PROTECTION
7
Littelfuse.com/sio-rtd
SIO-RTD-02-00
Motor and Pump Protection – Temperature Monitoring
Description
The SIO-RTD is a microprocessor-based data-acquisition
system for measuring temperatures accurately with resistance
temperature detectors (RTDs) and for monitoring 4-20 mA
analog-output devices in industrial environments. RTD inputs
are noise-filtered and automatically calibrated for lead-length
compensation, ambient temperature, and other factors providing
accurate readings through the specified temperature range for
several types of RTD devices.
Features & Benefits
FEATURES BENEFITS
8 inputs Single module can collect multiple data points
CSA Class 1 Zone 2
Hazardous-location
Certified
Can be mounted in hazardous areas
Individually-selectable
input type
Flexible; can be used with Pt100, Ni100, Ni120, Cu10
RTD or 4-20 mA inputs
Conformal coating Protects circuit boards against corrosion and moisture
Remote monitoring Up to 1.2 km away from network master
Notch filter Rejects noise from motor monitoring applications
Specifications
Input Voltage 18 to 32 Vdc, 2W
RTD Types Pt100 (default), Ni100, Ni120, Cu10
RTD Range -40 to 200˚ C with open and short detection
Analog Range 4-20 mA
Accuracy
(Pt100, Ni100, Ni120) 1˚ C
(Cu10) 3˚ C
(4-20 mA) 0.1 mA
Lead Compensation Up to 20 Ω
Communications Modbus RTU®
Conformally Coated Standard feature
Approvals cCSAus
Dimensions H 87 mm (3.43”); W 112.5 mm (4.43”);
D 56 mm (2.2”)
Warranty 5 years
Mounting DIN, Surface
Wiring Diagram
Temperature Input Monitor
1234 5 6
OPEN
1234 5 6
OPEN
R
C D R C D R C D R C D R S
P
G
D C R D C R D C R D C - +
+
2
4
V 0
V S
H
S
H
S
H
S
H
INP1
INP8
INP 2
INP7
PWR
COMM
INP 3
INP6
INP 4
INP5
COMM
SIO- RTD
INPUT MODULE
t
O tO tO tO
t
O t
O t
O t
O
tO
ALTERNATE
2-WIRE RTD
CONNECTION
S R D C H
RTD
ALTERNATE
4-20 mA
CONNECTION
S R D C H
RTD
47.5 Ω
1%
4-20 mA
ADDRESS
SELECTION
SWITCHES
ADDRESS 01
SELECTED
SEE TABLE 1
3-WIRE RTD
CONNECTION
RED
GREEN
WHITE
BLACK TO NEXT
SIO-RTD
RED
GREEN
WHITE
BLACK
INTERCONNECT CABLE
BELDEN 3124A SHOWN
+24 VDC
POWER SUPPLY
+ - + / B - / A
TIA-485
MODBUS MASTER
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
34 33 32 31 30 29 28 2726 25 24 23 22 21 20 19
PWR
For dimensional drawing see: Appendix page 515, Figure 49.
© 2022 Littelfuse, Inc. 145 Littelfuse.com/relayscontrols
Protection Relays
For More Information…
and to download our Fresh Water
Pumping Catalog, visit
Littelfuse.com/PumpProtection
PUMP CONTROLS & LIQUID LEVEL
CONTROLS
Protect and disable a pump if a hazardous condition arises. PumpSaver®
offers a wide variety of controls for both single phase and three phase
applications. Intrinsically safe relays are specifically designed to interface
between hazardous and non-hazardous areas.
ACBC-120 Series Alarm Controller/Battery Charging Unit.... 146
PC-102 Series Dual Channel Switch................................. 148
PC-105 5-Channel Pump Controller ....................... 149
PC-XXX-LLC-CZ Series Liquid Level Control Relays....................... 150
PC-XXX-LLC-GM Series Liquid Level Control Relays ...................... 150
201-100-SLD Single-Channel Seal-Leak Detector .......... 152
460-15-100-LLS Single-Channel Liquid Level Sensor.......... 153
460-15-100-SLD Single-Channel Seal-Leak Detector .......... 155
LLC1 Series Open Board Liquid Level Control............... 157
LLC2 Series Open Board Liquid Level Control............... 159
LLC4 Series Octal Plug-In Liquid Level Control ............ 161
LLC5 Series Liquid Level Control .................................. 163
LLC6 Series Low Level Cutoff Liquid Level Control ...... 165
LLC8 Series Low Level Cutoff Liquid Level Control ...... 167
Alternating Relays
ALT Series 8-pin Plug-in Alternating Relays ............... 169
ALT-XXX-1-SW /
ALT-XXX-3-SW Series Alternating Relays..................................... 171
ARP Series Alternating Relays..................................... 173
50R-400-ALT Alternating Relay....................................... 175
Intrinsically Safe Relays
ISS-100 Intrinsically Safe Switch ........................... 176
ISS-101 Intrinsically Safe Switch ........................... 177
ISS-102 Series Two-Channel Intrinsically Safe Switch ..... 179
ISS-105 Series Five-Channel Intrinsically Safe Switch ..... 181
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
146 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Alarm Controller and Battery Charger for
pump control panels
ACBC-120 SERIES
Wiring Diagram
Description
The ACBC-120 Series is a dual purpose alarm controller/battery
charging unit. When there is a loss of 120VAC power, the
ACBC-120’s primary function as an alarm controller activates.
When this power loss occurs, input power is switched to a
12VDC, lead-acid, rechargeable backup battery and a 12VDC
alarm consisting of a strobe light and/or a horn is activated. The
horn follows a 2 second on/2 second off pattern with a “horn
silence” option to turn the sound off. An LED indicator on the
unit also signals that the device has entered the alarm mode.
When 120VAC input is present the alarm circuit can be
tested and the unit’s secondary function as a 12VDC backup
battery charger is activated. In fast charge mode, the unit
has the capability to source up to 100mA of charging current.
However, the device normally charges at a current of 14mA in
maintenance mode. The alarm circuit can be tested by pressing
the “test” button located on the front of the unit or by activating
an external switch via the “alarm contact” pin.
The device has the ability to signal low battery voltage if the
voltage drops below 10.5VDC. The device can also detect if no
battery is present or if the battery is connected backwards. In
either of these cases, the ACBC-120 will signal a battery error
and will not attempt to charge.
Must use Model SD12-PC socket for UL Rating!
*Note: Manufacturer’s recommended screw terminal torque for the SD Series Sockets is
12 in.-lbs.
Features & Benefits
FEATURES BENEFITS
Controls 12VDC
alarm circuit
Activates strobe and/or horn when power
loss occurs
Selectable fast
charge mode
Unit sources higher charging current up to 100mA
(normal mode is 14mA)
Trip delay timer Prevents nuisance tripping
Battery fault detection
and reverse polarity
protection
Signals if battery voltage drops below 10.5VDC and
can detect if no battery is present or if the battery is
connected backwards
LED indication Visual indication of unit status or trip
Test button
Preventative maintenance check of the alarm circuit
by pressing the test button on the unit or externally
through alarm contact connection
Accessories
SD12-PC 12-pin Rectangle Socket
Rectangle Socket for the ACBC-120.
12-pin surface mountable.
Ordering Information
MODEL LINE
VOTAGE DESCRIPTION
ACBC-120 120VAC Does not include SD12-PC socket for mounting
ACBC-120-SD 120VAC Includes SD12-PC socket for mounting
Littelfuse.com/acbc120
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 509, Figure 8.
© 2022 Littelfuse, Inc. 147
Protection Relays
Pump Controls and Liquid Level Controls
Specifications
Input Characteristics
Supply Voltage
AC Input Voltage 120V +/-10%
Frequency 50/60Hz
AC Input Current 0.018A (max.) 0.003 (typical)
AC Input Power 2.4W (max.) fast charge current
0.4W (typical) maint. charge current
Functional Characteristics
Battery Charging
Characteristics
Acceptable Battery Type 12V lead-acid rechargeable
Fast Charge Current 100mA +/-10%
Maintenance Charge Current 14mA +/-50%
Low Battery Alert Level 10.5V
Output Characteristics
Strobe Light Alarm Output 12VDC@1A (max.)
Horn Alarm Output 12VDC@1A (max.)
General Characteristics
Temperature Range -40° to 60°C (-40° to 140°F)
ACBC-120 SERIES
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency, Radiated 150MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 4, 4kV input lines;
4kV signal lines
Safety Marks
UL
(SD12-PC socket required) UL508 (File #E68520)
Dimensions H 44.45 mm (1.75”); W 60.325 mm (2.375”);
D 104.775 mm (4.125”) (with socket)
Weight 0.7 lb. (11.2 oz., 317.51 g)
Mounting Method Surface mount with #8 or #10 screws
(plug into SD12-PC socket)
Socket Available Model SD12-PC (UL Rating 600V)
The 600V socket can be surface mounted
Littelfuse.com/acbc120
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
148 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/pc102
PC-102 SERIES
Dual Seal-Leak Detector or Seal-Leak &
Over-Temperature Detector
Description
The PC-102 is a dual-channel switch that provides dual
protection against seal failures and over-temperature in
submersible pumping applications.
Both units have two form-C isolated output relays and two LEDs,
which illuminate when each associated output relay is energized.
The sensitivity adjustment (4.7k-100kOhms) allows you to
define the input impedance at which the output relays will
change state. The sensitivity for the over-temperature detector
can be set to 4k Ohms with use of the DIP switches.
This unit may not be compatible with Flygt pumps.
Features & Benefits
FEATURES BENEFITS
Finger-safe terminals Meets IEC 61000 safety requirements
Compact design for DIN
rail or surface mount Allows flexiblility in panel installation
LED Status Indicator Visual indication of relay engagement
Two input channels Flexibility for pump-up/pump-down or two-channel
switch applications
Specifications
Input Characteristics
Frequency 50/60Hz
Functional Characteristics
Probe Sense Voltage 5vdc pulsed
Sensitivity 4.7k-100kΩ
Sensitivity (for temp) Selectable 4kΩ with DIP switches
Input Logic Direct or inverted
Debounce Time Delay 0.5 or 2 seconds
Output Characteristics
Relay Output Rating
(2 Form C isolated)
Pilot Duty 180VA @ 120VAC, C150
General Purpose 5A @ 240VAC
General Characteristics
Temperature Range -20° to 55°C (-4° to 131°F)
Maximum Input Power 2 W
Depluggable Connector Phoenix Contact-Series MSTB plugs
Output Relay
Status Indicators LEDs
Terminal Torque 4.5 in.-lbs.
Wire range 12-20 AWG
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air.
Radio Frequency Immunity (RFI) IEC 61000-4-3, Level 3, 10V/m
Fast Transients IEC 61000-4-4, Level 3, 4kV input power
2kV inputs/outputs
Safety Marks
UL UL508 (File #E68520)
Dimensions H 88.9 mm (3.5”); W 52.93 mm (2.08”);
D 59.69 mm (2.35”)
Weight 0.9 lb. (14.4 oz., 408.23 g)
Mounting Method 35mm DIN rail or Surface Mount
(#6 or #8 screws)
Wiring Diagram
PC-102CICI-DL PC-102CICI-LT
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION
PC-102CICI-DL 120VAC nominal
Dual seal-leak detector uses inputs
to sense seal failures and energize
the output relay. Input logic direct or
inverted is DIP switch selectable
PC-102CICI-LT 120VAC nominal
Seal-leak and over-temperature
detector uses one input to sense
seal failures and the temperature
input to detect motor overheating.
Configurable to suit various probes.
Seal input logic direct or inverted, plus
over-temperature trip reset automatic
or manual, is DIP switch selectable
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 510, Figure 10.
© 2022 Littelfuse, Inc. 149
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/pc105
Pump controller with duplex, triplex or
quadplex functionality or 5-channel relay
PC-105
Wiring Diagram
Description
The PC-105 is a 5-channel pump controller designed to handle
multiple pump applications. Alternatively, it can operate as a
5-channel switch.
The PC-105’s control functions support all of the popular industrystandard multi-pump, pump-up and pump-down configurations.
It can indicate low, high and out-of-sequence alarms and use
alternating and non-alternating pump control. The non-alternating
pump can be used as a jockey pump or emergency pump.
Using the built-in DIP switches, individual pumps can be disabled
when taken out of service for repair or maintenance.
Features
g Compact design
g Low, high and out-of-sequence alarms
g Variable time delay/lag pump delay from 2-255 seconds
g Duplex SPS (separate pump stop) pump control
g Duplex, triplex or quadplex pump control
g Pump-up or pump-down functions
g External silence, reset and alternation configuration
g Five-channel relay configuration
g DIN rail or surface mountable
Specifications
Input Characteristics
Supply Voltage 120VAC
Frequency 50*/60Hz
Functional Characteristics
Probe Sense Voltage 5vdc continuous
Output Characteristics
Relay Output Rating:
Pilot Duty 480VA @ 240VAC, B300
General Purpose 7A @ 240VAC
General Characteristics
Temperature Range -20° to 55°C (-4° to 131°F)
Maximum Input Power 4 W
Wire range 12 to 20 AWG
Terminal Torque 4.5 in.-lbs. (max.)
Pump In-rush delay 2 seconds
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air.
Radio Frequency
Immunity (RFI) IEC 61000-4-3, Level 3, 10V/m
Fast Transients IEC 61000-4-4, Level 3, 4kV input power
2kV inputs/outputs
Safety Marks
UL UL508 (File #E68520)
Dimensions H 94.06 mm (3.703”); W 127.64 mm (5.025”);
D 59.69 mm (2.35”)
Weight 1.2 lbs. (19.2 oz., 544.31 g)
Mounting Method 35 mm DIN rail or Surface Mount
(#6 or #8 screws)
*Note: 50Hz will increase all delay timers by 20%.
I1 I2 I3 I4 I5 IC
#1
OUTPUT OUTPUT OUTPUT OUTPUT
INPUT INPUT INPUT INPUT INPUT COMMON
TIME DELAY
OUTPUT
#2 #3 #4 #5
INPUT
Load
1
Load
3
120 VAC
Load
2
Load
4
Load
5
1-800-843-8848 www.pumpsaver.com
Figure 11: Typical Wiring for 5-channel Relay – Mode 0
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 511, Figure 12.
150 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/pcxxxllccz-pcxxxllcgm
PC-XXX-LLC-CZ / PC-XXX-LLC-GM SERIES
Liquid Level Control
Wiring Diagram
Description
The PC-xxx-LLC-CZ and PC-xxx-LLC-GM Series are liquid
level control relays used to control conductive liquid pumping
operations in a pump-up or pump-down application. The units
come in two different voltage ranges (see specs below).
The units have an adjustable sensitivity knob (4.7k to 100k ohms)
that is set according to the resistance level at which you want the
probes (sold separately) to sense the conductive liquid. The units
have a built-in debounce time delay that prevents the relay from
energizing if the probe resistance momentarily goes above or
below the sensitivity setpoint (due to liquid splashing in the tank).
The units operate their internal relay based on inputs from a high
and low probe and a common reference (when a conductive tank
is used) or common probe (when a non-conductive tank is used).
PC-xxx-LLC-CZ
g Compatible with Crouzet’s PNR & PNRU series liquid
level control
PC-xxx-LLC-GM
g Compatible with Gems’ Series 16M general purpose control
Must use Model OT08PC or P1011-6 socket for UL Rating!
Note: Manufacturer’s recommended screw terminal torque for the OT Series Octal Sockets is
12 in.-lbs.
Features & Benefits
FEATURES BENEFITS
Debounce time delay
(2 seconds)
Prevents rapid cycling of the pump due to
turbulance in the tank
Adjustable sensitivity
(4.7 to 100Kohms)
Allows user to fine tune the sensing resistance to
prevent false tripping due to foam or debris
Dual probe design
(plus a common)
Allows user the ability to set the level
differential required
TYPICAL WIRING DIAGRAM FOR PC-XXX-LLC-CZ
TYPICAL WIRING DIAGRAM FOR PC-XXX-LLC-GM
Ordering Information
MODEL LINE VOTAGE DESCRIPTION
PC-100-LLC-CZ 95-120VAC Compatible with Crouzet's PNR & PNRU
Series liquid level control
PC-200-LLC-CZ 190-240VAC Compatible with Crouzet's PNR & PNRU
Series liquid level control
PC-100-LLC-GM 95-120VAC Compatible with Gems' Series 16M
liquid level control
PC-200-LLC-GM 190-240VAC Compatible with Gems' Series 16M
liquid level control
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 509, Figure 8.
© 2022 Littelfuse, Inc. 151
Protection Relays
Pump Controls and Liquid Level Controls
Accessories
OT08PC 8-pin Octal Socket
Octal Socket for plug-in units. 8-pin surface &
DIN rail mountable. Rated for 10A @ 600VAC.
Specifications
Input Characteristics
Supply Voltage
PC-100-LLC-CZ 95-120VAC
PC-100-LLC-GM 95-120VAC
PC-200-LLC-CZ 190-240VAC
PC-200-LLC-GM 190-240VAC
Frequency 50/60Hz
Functional Characteristics
Probe Sense Voltage 5VDC pulsed
Debounce Time Delay 2 seconds
Probe Sensitivity 4.7k to 100k Adjustable
Output Characteristics
Output Contact Rating
Pilot Duty 480VA @ 240VAC
General Purpose 10A @240VAC
PC-XXX-LLC-CZ / PC-XXX-LLC-GM SERIES
General Characteristics
Temperature Range -40° to 70°C (-40° to 158°F)
Maximum Input Power 5 W
Sandards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air.
Radio Frequency Immunity (RFI) 150MHz, 10V/m
Fast Transients IEC 61000-4-4, Level 3, 2kV input
power and controls
Safety Marks
UL (OT08PC octal
socket required) UL508 (File #E68520)
CE IEC60947-6-2
Dimensions (when installed
in socket base) H 44.45 mm (1.75”); W 60.33 mm (2.375”);
D 104.78 mm (4.125”)
Weight 0.65 lb. (10.4 oz., 294.84 g)
Mounting Method DIN rail or surface mount
(plug into OT08PC socket)
Socket Available Model OT08PC (UL Rating 600V)
The 600V socket can be surface mounted or installed on DIN Rail.
Littelfuse.com/pcxxxllccz-pcxxxllcgm
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
152 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/201100SLD
Single-Channel Seal-Leak Detector
Description
The model 201-100-SLD is an 8-pin plug-in style seal-leak
detector to sense seal failures on submersible pumps. A
microcontroller-based relay that monitors the shaft seal of
a submersible pump motor. A resistive probe is installed in
the seal cavity. If water leaks into the pump, the resistance
measured by the probe decreases. When the resistance drops
below the sensitivity setpoint, the unit will trip and the relay
contacts will change state. The unit will automatically reset
when a fault is cleared.
Features & Benefits
J LED status indicator
J Compact plug-in design
J DIN rail or surface mountable via octal base
Accessories
OT08PC 8-pin Octal Socket
Octal Socket for plug-in units. 8-pin surface &
DIN rail mountable. Rated for 10A @ 600VAC.
Specifications
Control Voltage 110/120VAC nominal
Frequency 50/60Hz
Sensitivity 4.7k-100kΩ
Probe Sense Voltage 5vdc pulsed
Output contact Rating SPDT
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
Operating Temperature -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 5 W
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity,
Radiated 150MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
and controls
IEC IEC 61000-4-5, Level 3, 4kV line-to-line;
level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance
to a level of 6kV line-to-line
Hi-Potential Test Meets UL508 (2 x rated V + 1000V for 1 min.)
UL* UL508 (File #E68520)
CE IEC 60947-6-2
Enclosure Polycarbonate
Dimensions H 44.45 mm (1.75”); W 60.325 mm (2.375”);
D (with socket) 104.78 mm (4.125”)
Weight 0.7 lb. (11.2 oz., 317.51 g)
Mounting Method DIN rail or surface mount (plug into
OT08PC socket)
Socket Available Model OT08PC (UL Rating 600V)
Approvals UL, CE
*Must use Model OT08PC socket for UL Rating!
The 600V socket can be surface mounted or installed on DIN Rail.
Note: Manufacturer’s recommended screw terminal torque for the RB Series and OT Series
Octal Sockets is 12 in.-lbs.
201-100-SLD
Wiring Diagram
*
UL listed when used in combination
with OT08PC socket only.
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 509, Figure 8.
© 2022 Littelfuse, Inc. 153
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/46015100LLS
Description
The 460-15-100-LLS is a liquid level sensor to detect the
presence of conductive liquids. A probe is mounted at the
desired tank level and connected to the PumpSaver®. When
the probe is submersed, the relay’s output contacts will change
state as soon as the debounce time expires. The adjustable
debounce timer is intended to prevent nuisance actuating due
to waves or splashing in the tank.
Relay logic can be inverted so the relay’s output contacts change
state when the probe is no longer submersed. This makes the
unit versatile for use in pump-up and pump-down applications.
Features & Benefits
FEATURES BENEFITS
Unique Probe
Protection
Probes are protected from scale build up through
pulsed DC signal between the probes
Invertible relay logic Allows flexibility to be used in pump-up and
pump-down applications
Adjustable
debounce timer
Prevents nuisance actuating caused by waves or
splashing in the tank
LED status indicators Provides visual indication of the relay status
Specifications
Input Characteristics
Control Voltage 110/120VAC nominal
Frequency 50/60Hz (Note: 50Hz will increase all delay
timers by 20%)
Sensitivity 100kΩ
Functional Characteristics
Probe Sense Voltage 5vdc pulsed
Debounce Time Delay 2-60 seconds
Output Characteristics
Output contact Rating
– (Two Form A - SPST)
Pilot Duty 360VA @ 240VAC
General Purpose 8A @ 240VAC
General Characteristics
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 2 W
Class of Protection IP20, NEMA 1 (finger safe)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 4.5 in.-lbs.
Wire 12-20 AWG
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity, Radiated 150MHz, 10 V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
and controls
Single-Channel Liquid Level Sensor
460-15-100-LLS
Wiring Diagram
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 510, Figure 10.
154 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/46015100LLS
Surge
IEC IEC 61000-4-5, Level 3, 4kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance to
a level of 6kV line-to-line
Hi-Potential Test Meets UL508 (2 x rated V + 1000 V for 1 min.)
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947
Enclosure Polycarbonate
Dimensions H 88.9 mm (3.5”); W 52.93 mm (2.08”);
D 59.69mm (2.35”)
Weight 1 lb. (16 oz., 453.59 g)
Mounting Method 35mm DIN rail or Surface Mount
(#6 or #8 screws)
460-15-100-LLS
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 155
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/46015100SLD
Description
The 460-15-100-SLD is a seal-leak detector to sense seal failures
on submersible pumps. A microcontroller-based relay monitors
the shaft seal of a submersible pump motor. A resistive probe
is installed in the seal cavity. If water leaks into the pump,
the resistance measured by the probe decreases. When the
resistance drops below the sensitivity setpoint, the unit will
trip and the relay contacts will change state. Output relay logic
can be reversed by removing an external jumper. The unit will
automatically reset when a fault is cleared.
Features & Benefits
FEATURES BENEFITS
Unique probe
protection logic
Probes are protected from scale build up through
pulsed DC signal between the probes
Invertible relay logic Allows flexibility to be used in pump-up and
pump-down applications
LED status indicators Provides visual indication of the relay status
2 relay contacts Control independent loads on different circuits
Specifications
Input Characteristics
Control Voltage 110/120VAC nominal
Frequency 50/60Hz (Note: 50Hz will increase all delay
timers by 20%)
Functional Characteristics
Sensitivity 4.7k-100kΩ
Probe Sense Voltage 5vdc pulsed
Output Characteristics
Output contact Rating
– (Two Form A - SPST)
Pilot Duty 360VA @ 240VAC
General Purpose 8A @ 240VAC
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 2 W
Class of Protection IP20, NEMA 1 (finger safe)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 4.5 in.-lbs.
Wire AWG 12-20 AWG
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity, Radiated 150MHz, 10 V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
and controls
Single-Channel Seal-Leak Detector
460-15-100-SLD
Wiring Diagram
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 510, Figure 10.
156 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/46015100SLD
Surge
IEC IEC 61000-4-5, Level 3, 4kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance
to a level of 6kV line-to-line
Hi-Potential Test Meets UL508 (2 x rated V + 1000 V for 1 min.)
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947
Enclosure Polycarbonate
Dimensions H 88.9 mm (3.5”); W 52.93 mm (2.08”);
D 59.69 mm (2.35”)
Weight 1 lb. (16 oz., 453.59 g)
Mounting Method 35mm DIN rail or Surface Mount
(#6 or #8 screws)
460-15-100-SLD
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 157
Protection Relays
Pump Controls and Liquid Level Controls
LLC1 SERIES
Description
The LLC1 Series is a single probe conductive liquid level control
designed for OEM equipment and commercial appliances. This
unit may be ordered with fixed fill or fixed drain operation. A
time delay (1-60s) prevents rapid cycling of the output relay.
On adjustable units, the sensitivity adjustment allows accurate
level sensing while ignoring foaming agents and floating
debris. Isolated AC voltage is provided at the probe to prevent
electrolysis. A trickle current of less than 1mA determines the
presence or absence of liquid between the probe and common.
The LLC1 Series printed circuit board is conformal coated to
resist moisture and corrosion.
Operation
Drain (Pump-Down Mode): When the liquid level rises and
touches the probe, a fixed time delay begins. This time delay
prevents rapid cycling of the output relay and its load. At the
end of the time delay, the output relay energizes and remains
energized until the liquid level falls below the probe. The output
relay then de-energizes and remains de-energized until the liquid
again touches the probe.
Fill (Pump-Up Mode): When the liquid level falls below the
probe, a fixed time delay begins. This time delay prevents rapid
cycling of the output relay and its load. At the end of the time
delay, the output relay energizes and remains energized until
the liquid level rises and touches the probe. The output relay
then de-energizes and remains de-energized until the liquid level
again falls below the probe.
Features & Benefits
FEATURES BENEFITS
Isolated AC voltage
on probe Prevents scale buildup on the probe
Open PCB design Cost effective design for OEM equipment and
commercial appliances
Conformally coated PCB Protects against moisture and corrosion
Sensitivity adjustment Provides accurate level sensing while ignoring foam
or floating debris
Wiring Diagram
Open Board Liquid Level Controls
L1 N/L2
Metal Tank or use
additional Probe
C
P = Probe
L = Load
V = Voltage
∆S = Sensitivity
Adjustment
Contacts A, B & C
are isolated.
Connect common to
conductive tank or
an additional probe
as required.
Ordering Information
MODEL INPUT
VOLTAGE OPERATION TIME
DELAY
SENSE
RESISTANCE MOUNTING
LLC14A1AX 120VAC Drain 1s Adjustable 0.5 in nylon standoffs (3)
LLC14A5AX 120VAC Drain 5s Adjustable 0.5 in nylon standoffs (3)
LLC14B15AX 120VAC Fill 15s Adjustable 0.5 in nylon standoffs (3)
LLC14B1AX 120VAC Fill 1s Adjustable 0.5 in nylon standoffs (3)
LLC14B60AX 120VAC Fill 60s Adjustable 0.5 in nylon standoffs (3)
LLC16A25AX 230VAC Drain 25s Adjustable 0.5 in nylon standoffs (3)
LLC16A3AX 230VAC Drain 3s Adjustable 0.5 in nylon standoffs (3)
If you don’t find the part you need, call us for a custom product 800-843-8848
Littelfuse.com/LLC1
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 514, Figure 40.
158 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/LLC1
LLC1 SERIES
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
PHST-38QTN Electrode
Designed for a maximum steam pressure of
240 PSI; 400° F. UL353 Recognized.
LLP-24 Threaded Probe (24”)
Threaded stainless steel probe measuring 24”
(61 cm) long. For use with PHST-38QTN liquid
level control electrodes.
Specifications
Control
Type ON/OFF (single level) resistance sensor with
built-in time delay to prevent rapid cycling
Sense Voltage Low voltage AC between probe & common.
Isolated from input & output.
Sense Resistance Fixed or adjustable to 250KΩ
Sense Resistance Tolerance Adjustable - guaranteed range
Factory fixed ±10%
Time Delay
Range Fixed 1 - 60s in 1s increments
Input
Voltage 24, 120, or 230VAC
Tolerance
24VAC -15% - 20%
120 & 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Output
Type Electromechanical relay
Form Non-isolated, SPST & Isolated, SPDT contacts
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Surge IEEE C62.41-1991 Level A
Isolation Voltage ≥ 1500V RMS between input, output & probe
Mechanical
Mounting Surface mount to probe common with two
#6 (M3.5 x 0.6) screws or 0.50 in. (12.7 mm)
nylon standoffs with three #6 (M3.5 x 0.6)
screws (use Terminal 5 for probe common)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Dimensions (Open Board) H 88.9 mm (3.5”); W 69.9 mm (2.75”);
D 50.8 mm (2.0”)
Environmental
Operating/Storage
Temperature -20° to 55°C/-40° to 80°C
Coating Printed circuit board is conformal coated to
resist moisture and corrosion
Weight ≅ 8.7 oz (247 g)
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 159
Protection Relays
Pump Controls and Liquid Level Controls
LLC2 SERIES
Description
The LLC2 Series is a dual-probe conductive liquid level control
designed for OEM equipment and commercial appliance
applications. Models are available for fill or drain operation.
Transformer isolated 12VAC is provided at the probes to prevent
electrolysis. A trickle current of less than 1mA determines the
presence or absence of liquid between the probes and common.
On adjustable units, the sensitivity adjustment allows accurate
level sensing while ignoring foaming agents and floating debris.
The LLC2 Series printed circuit board is conformal coated to
resist moisture and corrosion.
Operation
Drain (Pump-Down Mode): When the liquid level rises and
touches the high probe, the output relay energizes and remains
energized until the liquid level falls below the low probe. The
output relay then de-energizes and remains de-energized until
the liquid again touches the high probe.
Fill (Pump-Up Mode): When the liquid level falls below the low
probe, the output relay energizes and remains energized until
the liquid level rises and touches the high probe. The output
relay then de-energizes and remains de-energized until the liquid
level again falls below the low probe.
Features & Benefits
FEATURES BENEFITS
Isolated 12VAC probes Prevents scale buildup on the probes
Open PCB design Cost effective design for OEM equipment and
commercial appliances
Conformally coated PCB Protects against moisture and corrosion
Sensitivity adjustment Provides accurate level sensing while ignoring foam
or floating debris
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
PHST-38QTN Electrode
Designed for a maximum steam pressure of
240 PSI; 400° F. UL353 Recognized.
LLP-24 Threaded Probe (24”)
Threaded stainless steel probe measuring 24”
(61 cm) long. For use with PHST-38QTN liquid
level control electrodes.
Open Board Liquid Level Controls
Ordering Information
MODEL INPUT
VOLTAGE OPERATION TERMINATION SENSE
RESISTANCE
LLC24A2AN 120VAC Drain Terminal block Adjustable
to 100kΩ
LLC24A2F50N 120VAC Drain Terminal block Fixed 50kΩ
LLC24B1AC 120VAC Fill 0.25”
Quick connect
Adjustable
to 100kΩ
LLC24B1F26C 120VAC Fill 0.25”
Quick connect Fixed 26kΩ
LLC24B2F50N 120VAC Fill Terminal block Fixed 50kΩ
LLC26A1F25C 230VAC Drain 0.25”
Quick connect Fixed 25kΩ
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
L1 N/L2
Metal Tank or use
additional Probe
V = Voltage
L = Low Probe
H = High Probe
C = Probe Common
P = Probe
∆S = Sensitivity
Adjustment
NC = Normally
Closed
NO = Normally
Open
Connect common to conductive tank. Additional
probe is necessary for non-conductive or
insulated tanks.
Littelfuse.com/LLC2
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 514, Figure 41.
160 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/LLC2
LLC2 SERIES
Specifications
Control
Type Resistance sensing for high & low level
detection of conductive liquids
Sense Voltage 12VAC at probe terminals
Sense Resistance Fixed or adjustable to 100KΩ
Sense Resistance Tolerance Adjustable: guaranteed range
Fixed: ±10%
Input
Voltage 24, 120, or 230VAC
Tolerance
24VAC -15% - 20%
120 & 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Output
Type Electromechanical relay
Form Isolated, SPDT
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Isolation Voltage ≥ 1500V RMS between input, output, & probe
Mechanical
Mounting Surface mount with two or four #6
(M3.5 x 0.6) screws
Termination 0.25 in. (6.35 mm) duplex male quick connect
terminals. Terminal blocks for up to #14 AWG
2.5 mm2
) wire
Dimensions (Open Board) H 101.6 mm (4.0”); W 76.2 mm (3.0”);
D 50.8 mm (2.0”)
Environmental
Operating/Storage
Temperature -20° to 55°C / -40° to 80°C
Coating Printed circuit board is conformal coated to
resist moisture and corrosion
Weight ≅ 9 oz (255 g)
Mounting Dimensions
4.0
(101.6)
0.5
(12.7) 2.0
(50.8)
0.163 (4.14)
3.0
(76.2) 0.44
(11.35)
0.25
(6.35)
3.62
(91.9)
3.5
(88.9)
2.12
(53.8)
2.5
(63.5)
0.19
(4.83)
0.25
(6.35)
DIAGRAM
KEY
MODEL NUMBERS ENDING IN:
N C
W 0.440”
(11.176 mm)
0.250”
(6.350 mm)
X 3.620”
(91.948 mm)
3.500”
(88.900 mm)
Y 2.120”
(53.848 mm)
2.500”
(63.500 mm)
Z 0.190”
(4.826 mm)
0.250”
(6.350 mm)
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 161
Protection Relays
Pump Controls and Liquid Level Controls
LLC4 SERIES
Description
The LLC4 combines resistance sensing circuitry with solid-state
timing to provide single probe level maintenance. On adjustable
units, the sensitivity adjustment allows accurate level sensing
while ignoring foaming agents and floating debris. Isolated
12VAC is provided at the probe to prevent electrolysis. A trickle
current of less than 1mA determines the presence or absence
of conductive liquid between the probe and common. The LLC4
Series can be used with many types of low voltage (resistance
changing) transducers to perform other control functions like
temperature limit control, photo limit control, condensation
sensing, and ice sensing.
Operation
Drain (Pump-Down Mode): When the liquid level rises and
touches the probe, the time delay begins. This time delay
prevents rapid cycling of the output relay and its load. At the
end of the time delay, the output relay energize and remain
energized until the liquid level falls below the probe level. The
output relay de-energize and remain de-energized until the liquid
rises and touches the probe.
Fill (Pump-Up Mode): When the liquid level falls below the
probe, the time delay begins. This time delay prevents rapid
cycling of the output relay and its load. At the end of the time
delay, the output relay energize and remain energized until the
liquid level rises and touches the probe. The output relay then
de-energize and remain de-energized until the liquid level again
falls below the probe level.
Features & Benefits
FEATURES BENEFITS
Isolated 12VAC probes Prevents scale buildup on probe
Industry standard 8-pin
octal plug connection Eliminates need for special connectors
Sensitivity adjustment Provides accurate level sensing while ignoring foam
or floating debris
Wiring Diagram
Octal Plug-In Liquid Level Controls
L1 N/L2
Metal Tank or use
additional Probe
P = Probe
C = Probe Common
V = Voltage
Relay contacts are isolated.
Connect common to
conductive tank. Additional
probe is necessary for
non-conductive or
insulated tanks.
Ordering Information
MODEL INPUT
VOLTAGE OPERATION TIME
DELAY SENSE RESISTANCE MODEL INPUT
VOLTAGE OPERATION TIME
DELAY SENSE RESISTANCE
LLC42A10A 24VAC Drain 10s Adjustable 1 - 250kΩ LLC44B1A 24VAC Fill Adjustable 1 - 250kΩ
LLC42A1A 24VAC Drain 1s Adjustable 1 - 250kΩ LLC44A60A 120VAC Drain 60s Adjustable 1 - 250kΩ
LLC42B15A 24VAC Fill 15s Adjustable 1 - 250kΩ LLC44B20A 120VAC Fill 20s Adjustable 1 - 250kΩ
LLC44A10A 120VAC Drain 10s Adjustable 1 - 250kΩ LLC44B2A 120VAC Fill 2s Adjustable 1 - 250kΩ
LLC44A15A 120VAC Drain 15s Adjustable 1 - 250kΩ LLC44B30A 120VAC Fill 30s Adjustable 1 - 250kΩ
LLC44A1A 120VAC Drain 1s Adjustable 1 - 250kΩ LLC44B4A 120VAC Fill 4s Adjustable 1 - 250kΩ
LLC44A2A 120VAC Drain 2s Adjustable 1 - 250kΩ LLC44B5A 120VAC Fill 5s Adjustable 1 - 250kΩ
LLC44A4A 120VAC Drain 4s Adjustable 1 - 250kΩ LLC44B5F100 120VAC Fill 5s Fixed 100kΩ
LLC44A5A 120VAC Drain 5s Adjustable 1 - 250kΩ
If you don’t find the part you need, call us for a custom product 800-843-8848
8-PIN
Littelfuse.com/LLC4
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 513, Figure 33.
162 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/LLC4
LLC4 SERIES
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 (M 3.5 x 0.6) screws or
snaps onto a 35 mm DIN rail. Uses PSC8 holddown clips.
PSC8 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use with
NDS-8 Octal Socket. Sold in pairs.
PHST-38QTN Electrode
Designed for a maximum steam pressure of
240 PSI; 400° F. UL353 Recognized.
LLP-24 Threaded Probe (24”)
Threaded stainless steel probe measuring 24”
(61 cm) long. For use with PHST-38QTN liquid
level control electrodes.
Specifications
Control
Type ON/OFF (single level) resistance sensor with
built-in time delay to prevent rapid cycling
Sensing Voltage 12VAC
Sensing Resistance Fixed or adjustable to 250KΩ
Sensing Resistance
Tolerance Adjustable: 1K ±500Ω at low end;
250K ±25% at high end
Factory fixed: ±10% or 500Ω, whichever
is greater
Input
Voltage 24, 120, or 230VAC
Tolerance
24VAC -15%, +20%
120 & 230VAC -20%, +10%
AC Line Frequency 50/60 Hz
Output
Type Electromechanical relay
Form Isolated, SPDT
Rating 4A resistive @ 240VAC;
1/10 hp @ 240VAC
Protection
Surge IEEE C62.41-1991 Level A
Isolation Voltage ≥ 1500V RMS between input, output & probe
Mechanical
Mounting Plug-in socket
Termination Octal 8-pin plug-in
Dimensions H 73.9 mm (2.91”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Environmental
Operating/Storage
Temperature -20° to 60°C/-40° to 80°C
Weight ≅ 6 oz (170 g)
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 163
Protection Relays
Pump Controls and Liquid Level Controls
Liquid Level Controls
Description
The LLC5 provides dual probe conductive liquid level control
in a convenient octal plug-in package. Models are available
for fixed fill or drain operation. Isolated, pulsed DC voltage
on the probes prevents electrolytic plating. Less than 1 mA
of current is used to sense the presence of conductive liquid
between the probes and common. On adjustable units, the
sensitivity adjustment eliminates false tripping caused by
floating debris and foaming agents.
Operation
Drain (Pump-Down Mode): When the liquid level rises
and touches the high level probe, the output relay and LED
energize and remain energized until the liquid level falls below
the low level probe. The output relay and LED de-energize and
remain de-energized until the liquid rises and touches the high
level probe.
Fill (Pump-Up Mode): When the liquid level falls below
the low level probe, the output relay and LED energize and
remain energized until the liquid level rises and touches the
high level probe. The output relay and LED de-energize and
remain de-energized until the liquid level again falls below the
low level probe.
Features & Benefits
FEATURES BENEFITS
Unique Probe
Protection logic
Probes are protected from scale build up through
pulsed DC signal between the probes.
LED status indicatior Visual indication of relay engagement in pump-up or
pump-down activity
Isolated 5A
SPDT contacts Allows control of loads for AC voltage
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated
at 10A @ 300VAC. Surface mounted with two
#6 (M 3.5 x 0.6) screws or snaps onto a 35 mm
DIN rail. Uses PSC8 hold-down clips.
PSC8 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use with
NDS-8 Octal Socket. Sold in pairs.
Note: use of the PSC8 clips partley covers the LED window of
the LLC5 unit. Use of alternative socket base P1011-6 with its
corresponding hold down clips PSCRB8 do not cover up the LED
window, but the socket base is not DIN rail mountable.
Ordering Information
MODEL LINE
VOLTAGE DESCRIPTION
LLC52AA 24VAC For Drain (pump-down) operation with
adjustable sense resistance
LLC52BA 24VAC For Fill (pump-up) operation with adjustable
sense resistance
LLC54AA 120VAC For Drain (pump-down) operation with
adjustable sense resistance
LLC54AAS 120VAC
For Drain (pump-down) operation with
adjustable sense resistance and reverse
connection (#8 low, #6 high)
LLC54AF10 120VAC For Drain (pump-down) operation with fixed
sense resistance of 10 kΩ
LLC54BA 120VAC For Fill (pump-up) operation with adjustable
sense resistance
LLC54BAS 120VAC
For Fill (pump-up) operation with adjustable
sense resistance and reverse connection
(#8 low, #6 high)
LLC56AA 230 VAC For Drain (pump-down) operation with
adjustable sense resistance
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
L1 N/L2
Metal Tank or use
additional Probe
HP = HIGH LEVEL PROBE
LP = LOW LEVEL PROBE
C = PROBE COMMON
V = VOLTAGE
Relay contacts are isolated.
Connect common to
conductive tank. Additional
probe is necessary for nonconductive or insulated tanks.
LLC5 SERIES
8-PIN
Littelfuse.com/LLC5
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 514, Figure 43.
164 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/LLC5
Accessories
PHST-38QTN Electrode
Designed for a maximum steam pressure of 240
PSI; 400° F. UL353 Recognized.
LLP-24 Threaded Probe (24”)
Threaded stainless steel probe measuring 24”
(61 cm) long. For use with PHST-38QTN liquid
level control electrodes.
Specifications
Control
Type Resistance sensing for high & low level
detection of conductive liquids
Sensing Voltage Pulsed DC at probe terminals
Sensing Resistance Factory fixed or adjustable to 100KΩ
Sensing Resistance
Tolerance Adjustable: 1K ±500Ω at low end;
100KΩ ±25%, 0% at high end
Factory fixed: ±10% or 500Ω whichever
is greater
Response Time Debounce time delay <1s
Input
Tolerance
24VAC -15%, +20%
120 & 230VAC -20%, +10%
AC Line Frequency 50/60 Hz
Output
Type Electromechanical relay
Form Isolated, SPDT
Rating 5A resistive @ 240VAC, 1/10 hp @ 240VAC
Protection
Isolation Voltage ≥ 1500V RMS between input, output, & probe
Mechanical
Mounting Plug-in socket
Dimensions H 60.7 mm (2.39”); W 45.2 mm (1.78”);
D 76.5 mm (3.01”)
Termination Octal 8-pin plug-in
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 80°C
Weight 6 oz (170 g) approx.
LLC5 SERIES
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 165
Protection Relays
Pump Controls and Liquid Level Controls
LLC6 SERIES
Description
The LLC6 Series is a plug-in, single-probe conductive liquid
level control designed for low liquid level cutoff protection. It
offers a factory fixed time delay of 1 - 60s and is available in
input voltages of 24, 120, or 230VAC. LED indicator illuminates
whenever the LLC6’s 10A, SPDT output relay is energized.
Available with automatic/manual reset or a special manual reset
with power outage feature, which auto resets the unit when
power is restored and the water level is acceptable. 24VAC and
120VAC units are recognized as limit switches under UL353
(230VAC units are UL508) and CSA certified under Standard 14.
Operation
Automatic Reset (Reset terminals not connected): When
liquid rises to the low level cutoff probe, the output relay and
the LED indicator energize. When the liquid falls below low level
cutoff probe, the output relay and the LED indicator de-energize
after a fixed time delay.
Manual Reset (Reset switch connected): When the liquid
level falls below the low level probe, the output relay and LED
de-energize after a fixed time delay. When the liquid level rises
to the low level probe, the output relay and LED indicator remain
de-energized until the manual reset switch is opened; then they
energize immediately.
Power Outage Manual Reset (Reset switch connected): A
power outage causes the output relay and LED indicator to
de-energize. Upon restoration of power, if the liquid level is
above the low level probe, the output relay and LED indicator
will re-energize. If the liquid level is below the low level probe,
the output relay and LED indicator remain de-energized until the
Normally Closed (NC) reset switch is opened.
Features & Benefits
FEATURES BENEFITS
Isolated 12VAC on probe Prevents electrolysis
Industry standard 11-pin
octal plug connection Eliminates need for special connectors
LED indication Visual indication output relay is energized
Power outage protection
(see ordering table
for models)
Automatically resets the unit when power is
restored and the water level is acceptable
Wiring Diagram
Low Level Cutoff Liquid Level Controls
Ordering Information
MODEL INPUT VOLTAGE TIME DELAY
(FIXED)
SENSE
RESISTANCE RESET
LLC6210F10M 24VAC 10s 10kΩ Manual/Automatic
LLC6410F10M 120VAC 10s 10kΩ Manual/Automatic
LLC643F26M 120VAC 3s 26kΩ Manual/Automatic
LLC6610F5P 230VAC 10s 5kΩ Power Outage Manual Reset
If you don’t find the part you need, call us for a custom product 800-843-8848
L1
N/L2
Metal Tank or use
additional Probe
PC = Probe
Common
P = Probe
V = Voltage
R = Optional NC
Reset Switch
Connect common
to conductive tank.
Additional probe is
necessary for
non-conductive or
insulated tanks.
11-PIN
Littelfuse.com/LLC6
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 513, Figure 33.
166 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/LLC6
LLC6 SERIES
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-11 11-pin Socket
11-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 (M 3.5 x 0.6) screws or
snaps onto a 35 mm DIN rail. Uses PSC11 holddown clips.
PSC11 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use with
NDS-11 Socket. Sold in pairs.
PHST-38QTN Electrode
Designed for a maximum steam pressure of
240 PSI; 400° F. UL353 Recognized.
LLP-24 Threaded Probe (24”)
Threaded stainless steel probe measuring 24”
(61 cm) long. For use with PHST-38QTN liquid
level control electrodes.
Specifications
Control
Type ON/OFF (single level) resistance sensor with
built-in time delay to prevent rapid cycling
Sense Voltage 12VAC nominal at probe terminals
Sense Resistance Fixed 5K - 250KΩ
Sense Resistance Tolerance Fixed ±10%
Time Delay
Range 1 - 60s in 1s increments
Tolerance ±20%
Repeat Accuracy ±10%
Time Delay vs Temp.
& Voltage ±10%
Power Outage Reset Delay ≤ 1s
Input
Voltage 24, 120, or 230VAC
Tolerance
24VAC +20% to -15%
120 or 230VAC +10% to -20%
AC Line Frequency 50/60 Hz
Output
Type Electromechanical relay
Form Non-isolated, SPDT
Rating 10A resistive @ 240VAC; 1/4 hp @ 125VAC;
1/2 hp @ 250VAC
Protection
Surge IEEE C62.41-1991 Level A
Isolation Voltage ≥ 2500V RMS between input &
output terminals
Mechanical
Mounting Plug-in socket
Termination 11-pin relay type
Dimensions H 73.9 mm (2.91”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 80°C
Humidity 95% relative, non-condensing
Weight ≅ 7.3 oz (207 g)
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 167
Protection Relays
Pump Controls and Liquid Level Controls
LLC8 SERIES
Description
The LLC8 Series is a low cost, single-probe conductive liquid
level control designed for low liquid level cutoff protection. It
offers a factory fixed time delay of 1 - 60s and is available for
input voltages of 24, 120, or 230VAC. LED indicator illuminates
whenever the LLC8’s isolated, 10A, SPDT output relay is
energized. Sense resistance is fixed from 5K - 250KΩ. Available
with manual/automatic reset or a special manual reset with a
power outage feature that auto resets the unit when power is
restored and the water level is acceptable. 24 and 120VAC units
are UL recognized as limit switches under UL353 (230VAC units
are UL 508) and CSA certified under Standard 14.
Operation
Automatic Reset (Reset switch not connected): When liquid
rises to low level cutoff probe, output relay and LED indicator
energize. When liquid falls below the low level cutoff probe,
the output relay and LED indicator de-energize after a fixed
time delay.
Manual Reset (Reset switch connected): When the liquid
level falls below low level probe, the output relay and LED
de-energize after a fixed time delay. When the liquid level rises
to low level probe, the output relay and LED indicator remain
de-energized until the NC manual reset switch is opened; then
they energize immediately.
Power Outage Manual Reset (Reset switch connected):
A power outage causes the output relay and LED indicator to
de-energize. Upon restoration of power, if the liquid is touching
the low level probe, the output relay and LED indicator will
re-energize. If the liquid level is below the low level probe, the
output relay and LED indicator remain de-energized until the NC
reset switch is opened.
Features & Benefits
FEATURES BENEFITS
Isolated 12VAC probes Prevents scale buildup on probe
Open PCB design Cost effective design for OEM low liquid level
cutoff protection
Conformally coated PCB Protects against moisture and corrosion
LED indication Visual indication output relay is energized
Power outage protection
(see ordering table
for models)
Automatically resets the unit when power is
restored and the water level is acceptable
24VAC & 120VAC models
meet UL353 Required for use as a low level limit switch
Wiring Diagram
Low Level Cutoff Liquid Level Controls
Ordering Information
MODEL INPUT
VOLTAGE
TIME
DELAY
(FIXED)
SENSE
RESISTANCE RESET
LLC825F5M 24VAC 5s 5kΩ Manual/automatic
LLC842F103M 120VAC 2s 10kΩ Manual/automatic
LLC843F10M 120VAC 3s 10kΩ Manual/automatic
LLC843F10P 120VAC 3s 10kΩ Power outage
manual reset
LLC843F26M 120VAC 3s 26kΩ Manual/automatic
LLC843F26P 120VAC 3s 26kΩ Power outage
manual reset
LLC845F25P 120VAC 5s 25kΩ Power outage
manual reset
LLC8430F250P 120VAC 30s 250kΩ Power outage
manual reset
LLC8430F26P 120VAC 30s 26kΩ Power outage
manual reset
LLC8610F12M 230VAC 10s 12kΩ Manual/automatic
LLC863F26P 230VAC 3s 26kΩ Power outage
manual reset
If you don’t find the part you need, call us for a custom product 800-843-8848
Metal Tank or use
additional Probe
V = Voltage
LLCO = Low Level
Probe
G, CP = Ground or
Common
(Reference)
Probe
R = Optional NC
Reset Switch
(not included)
NO = Normally Open
NC = Normally Closed
C = Common or
Transfer Contact
Relay contacts are isolated. Connect common to conductive tank. Additional probe is
necessary for non-conductive or insulated tanks.
Littelfuse.com/LLC8
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 514, Figure 42.
168 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls
Littelfuse.com/LLC8
LLC8 SERIES
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
PHST-38QTN Electrode
Designed for a maximum steam pressure of
240 PSI; 400° F. UL353 Recognized.
LLP-24 Threaded Probe (24”)
Threaded stainless steel probe measuring 24”
(61 cm) long. For use with PHST-38QTN liquid
level control electrodes.
Specifications
Control
Type Resistance sensing for conductive liquids with
time delay
Sense Voltage 12VAC nominal at probe terminals
Sense Resistance Fixed 5K - 250KΩ
Sense Resistance Tolerance ±10%
Time Delay
Tolerance ±20%
Repeat Accuracy ±10%
Time Delay vs Temp.
& Voltage ±10%
Power Outage Reset Delay ≤1s
Input
Voltage 24, 120, or 230VAC
Tolerance
24VAC -15% - 20%
120 or 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Output
Type Electromechanical relay
Form Isolated SPDT
Rating 10A resistive @ 120/240VAC;
1/4 hp @ 125VAC; 1/2 hp @ 250VAC
Protection
Surge IEEE C62.41-1991 Level A
Isolation Voltage ≥ 2500V RMS input to output terminals
Mechanical
Mounting 0.5 in. (12.7 mm) x .187 (4.76 mm) dia. nylon
standoffs (3)
Termination
Dimensions H 63.5 mm (2.5”); W 55.6 mm (2.19”);
D 47.8 mm (1.88”)
Electrical 0.25 in. (6.35 mm) male quick connect terminals
Reset Switch & Probe(s) 0.187 x 0.03 in. (4.75 x 0.76 mm) male quick
connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 80°C
Coating Printed circuit board is conformal coated to
resist moisture & corrosion
Humidity 95% relative, non-condensing
Weight ≅ 5 oz (141.7 g)
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 169
Protection Relays
Pump Controls and Liquid Level Controls – Alternating Relays
Littelfuse.com/alt
Accessories
OT08PC Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated at
10A @ 600VAC. Surface mounted with two #6
screws or snaps onto a 35 mm DIN rail.
ALT SERIES
8-pin Plug-in Alternating Relay
Description
The ALT alternating relays are used to alternate between two
loads. The ALT is commonly used in duplex pumping applications
to balance the runtime of both pumps.
The ALT-S is used in single high-level float applications. When
the float switch opens, the alternating relay changes state,
forcing the other pump to run the next time the float closes.
All ALT relays have a built-in debounce feature that prevents
the relay from changing state if the switch or float contact
bounces momentarily.
The ALT-X has an internal cross-connected relay and is used
in dual high-level float applications. These floats are commonly
referred to as lead and lag floats.
The pumps alternate as in the ALT-S version but the crossconnected relay configuration allows both pumps to run
simultaneously when both the lead and lag floats are closed.
These relays are also available with a built-in switch (SW option)
that is used to manually force one of the pumps to run every
time the float switch is closed. This is helpful when a pump has
been removed for repair or for test purposes. In the case of the
ALT-X-SW, the switch essentially forces one pump to be the
lead pump, while still allowing the second to run when both
floats are closed.
Must use the OT08PC socket for UL Rating!
*Note: Manufacturer’s recommended screw terminal torque for the OT Series
Octal Sockets is 12 in.-lbs.
Features & Benefits
FEATURES BENEFITS
Debounce time delay Prevents nuisance actuating causes by waves or
spashing in the tank
Built-in manual/
auto switch
Force lead pump operation when a pump is removed
for repair or testing (on select models)
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION
ALT024-S† 20-26VAC or VDC For single high-level float applications
ALT024-S-SW† 20-26VAC or VDC For single high-level float applications
with built in manual switch
ALT115-S 95-125VAC For single high-level float applications
ALT115-S-SW 95-125VAC For single high-level float applications
with built in manual switch
ALT115-X 95-125VAC For dual high-level (lead and lag) float
applications
ALT115-X-SW 95-125VAC For dual high-level (lead and lag) float
applications with built in manual switch
ALT230-S 195-250VAC For single high-level float applications
ALT230-S-SW 195-250VAC For single high-level float applications
with built in manual switch
ALT230-X 195-250VAC For dual high-level (lead and lag) float
applications
ALT230-X-SW 195-250VAC For dual high-level (lead and lag) float
applications with built in manual switch
TYPICAL WIRING DIAGRAM FOR THE ALT-S
Wiring Diagram
PUMP
#1
PUMP
#2
MAGNETIC CONTACTORS
F3
F1
F2
F4
F5
F6
F3 - F6:
SIZE FOR INDIVIDUAL
PUMP APPLICATION
F1 - F2:
1-2A TYPICAL SIZE
FOR CONTACTOR COILS
L1
L2
L1
L2
L1
L2
ALTERNATING RELAY
8 5
1 4 2 3
7 6
S1
S2
TYPICAL WIRING DIAGRAM FOR THE ALT-X (CROSS CONNECTED)
†
ALT024-S and ALT024-S-SW are not UL Listed
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 509, Figure 8.
170 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls – Alternating Relays
Littelfuse.com/alt
ALT SERIES
Specifications
Input Characteristics
Supply Current 40mA
Functional Characteristics
Debounce Time Delay 0.5 second
Control Input Impedance (min)
24 10kΩ
115 56kΩ
230 100kΩ
Output Characteristics
Output Contact Rating 480VA @ 240VAC
General Characteristics
Temperature Range -40° to 50°C (-40° to 122°F)
Maximum Input Power 5 W
Safety Marks
UL (OT08PC octal
socket required) UL508 (File #E68520)
CSA C22.2 No. 14 (File #46510)
Dimensions (with socket) H 44.45 mm (1.75”); W 60.33 mm (2.375”);
D 104.78 mm (4.125”)
Weight 0.38 lb. (6.08 oz., 172.67 g)
Mounting Method DIN rail or surface mount
(plug into OT08PC socket)
Socket Available OT08PC (UL Rating 600V)
The 600V socket can be surface mounted or installed on DIN Rail.
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products
are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 171
Protection Relays
Pump Controls and Liquid Level Controls – Alternating Relays
Littelfuse.com/altxxx1sw-altxxx3sw
Alternating Relay
ALT-XXX-1-SW / ALT-XXX-3-SW SERIES
Wiring Diagram
Description
The ALT-xxx-1-SW/ALT-xxx-3-SW Series are used to alternate
between two loads and are commonly used in duplex
pump-up and pump-down applications to balance the runtime
of both pumps.
The ALT relays have a built-in debounce time delay that prevents
the relay from changing state if the float momentarily bounces,
and they have a built-in switch to manually force a specific load
(pump) to operate each time the input float closes. This is helpful
when performing periodic maintenance or pump repair.
Must use the OT08PC socket for the 8-pin models, and the OT11PC socket for the
11-pin models, for UL Rating!
*Note: Manufacturer’s recommended screw terminal torque for the OT Series
Octal Sockets is 12 in.-lbs.
Features & Benefits
FEATURES BENEFITS
Debounce time delay Prevents rapid cycling caused by waves or splashing
in the tank
LED indicators Visual indication of load operation in
duplex application
Built-in manual switch
to force load operation
Helpful to control load operation when performing
periodic maintenance or pump repair
ALT-xxx-3-SW
offers duplexing
Allows lag pump to energize if lead pump can’t
handle current demand
Accessories
OT08PC 8-pin Octal Socket
Octal Socket for plug-in units. 8-pin surface &
DIN rail mountable. Rated for 10A @ 600VAC.
OT11PC 11-pin Magnal Socket
11-pin surface & DIN rail mountable. Rated for
10A @ 300VAC
TYPICAL WIRING DIAGRAM FOR ALT-XXX-1-SW
TYPICAL WIRING DIAGRAM
FOR ALT-XXX-3-SW Ordering Information
MODEL LINE
VOTAGE MOUNTING DESCRIPTION
ALT-100-1-SW 95-120VAC 11-pin
magnal
Single float input, two isolated
Form C relays (DPDT), 2 LEDs
for load indication
ALT-100-3-SW 95-120VAC 8-pin octal
Three float inputs (lead, lag,
stop floats), actuating latching
relays on lead/lag floats,
2 LEDs for load indication
ALT-200-3-SW 190-240VAC 8-pin octal
Three float inputs (lead, lag,
stop floats), actuating latching
relays on lead/lag floats,
2 LEDs for load indication
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 509, Figure 8.
172 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls – Alternating Relays
Littelfuse.com/altxxx1sw-altxxx3sw
Specifications
Input Characteristics
Supply Voltage
ALT-100-1-SW,
ALT-100-3-SW 95-120VAC
ALT-200-3-SW 190-240VAC
Frequency 50/60Hz
Functional Characteristics
Debounce Time Delay
ALT-100-1-SW, 1 second
ALT-100-3-SW,
ALT-200-3-SW 5 seconds
Output Characteristics
Output Relay (DPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
General Characteristics
Temperature Range -40° to 70°C (-40° to 158°F)
Maximum Input Power 5 W
ALT-XXX-1-SW / ALT-XXX-3-SW SERIES
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency, Radiated 150MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV
input power and controls
Safety Marks
UL (OT08PC or OT11PC
octal socket required) UL508 (File #E68520)
CE IEC 60947-6-2
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.375”);
D 104.78 mm (4.125”) (with socket)
Weight 0.65 lb. (10.4 oz., 294.84 g)
Mounting Method DIN rail or surface mount (plug into OT08PC
or OT11PC socket)
Sockets Available
Model OT08PC UL Rating 600V
Model OT11PC UL Rating 300V
The sockets can be surface mounted or installed on DIN Rail.
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 173
Protection Relays
Pump Controls and Liquid Level Controls – Alternating Relays
Littelfuse.com/arp
Description
The ARP Series is used in systems where equal run time for
two motors is desirable. The selector switch allows selection
of alternation or for continuous operation of either load. LED’s
indicate the status of the output relay. This versatile series may
be front panel mounted (BZ1 accessory required) or 35 mm DIN
rail mounted with an accessory socket.
Operation
Alternating: When the rotary switch is in the “alternate”
position, alternating operation of Load A and Load B occurs upon
the opening of the control switch S1. To terminate alternating
operation and cause only the selected load to operate, rotate
the switch to position “A” to lock Load A or position “B” to lock
Load B. The LEDs indicate the status of the internal relay and
which load is selected to operate.
Note: Input voltage must be applied at all times for proper
alternation. The use of a solid-state control switch for S1 may
not initiate alternation correctly. S1 voltage must be from
the same supply as the unit’s input voltage (see connection
diagrams). Loss of input voltage resets the unit; Load A
becomes the lead load for the next operation.
Duplexing (Cross-Wired): Duplexing models operate the
same as alternating relays and when both the Control (S1)
and Lag Load (S2) Switches are closed, Load A and Load B
energize simultaneously.
The DPDT 8-pin, cross-wired option, allows extra system load
capacity through simultaneous operation of both motors when
needed. Relay contacts are not isolated.
Features & Benefits
FEATURES BENEFITS
Alternating or
electrically locked
operation
Flexibility to run unit alternating between the two
loads as normal or lock the relay to one specific load.
Low profile
selector switch Prevents accidental actuation
LED status indication Visual indication of which load is engaged
Industry standard
base connection Flexibility to use in many applications
ARP SERIES
Alternating Relay
Wiring Diagram
L1 N/L2 L1 N/L2
L1 N/L2
V = VOLTAGE
LA = LOAD A
LB = LOAD B
S1 = PRIMARY CONTROL SWITCH
S2 = LAG LOAD SWITCH
Relay contacts in above are isolated.
SPDT 8-PIN DPDT 11-PIN
DPDT 8-PIN CROSS WIRED
Ordering Information
MODEL LINE
VOLTAGE
OUTPUT
FORM DESCRIPTION
AR120A-3095 120VAC SPDT 8-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP23S 24VAC DPDT 8-pin cross-wired for duplexing applications. Rotary switch allows user to lock internal relay to one specific load.
ARP41 120VAC SPDT 8-pin for alternating applications.
ARP41S 120VAC SPDT 8-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP42S 120VAC DPDT 11-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP43 120VAC DPDT 8-pin cross-wired for duplexing applications.
ARP43S 120VAC DPDT 8-pin cross-wired for duplexing applications. Rotary switch allows user to lock internal relay to one specific load.
ARP61S 230VAC SPDT 8-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP62S 230VAC DPDT 11-pin for alternating applications. Rotary switch allows user to lock internal relay to one specific load.
ARP63S 230VAC DPDT 8-pin cross-wired for duplexing applications. Rotary switch allows user to lock internal relay to one specific load.
If you don’t find the part you need, call us for a custom product 800-843-8848
8-PIN
11-PIN
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 514, Figure 46.
174 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls – Alternating Relays
Littelfuse.com/arp
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated
at 10A @ 300VAC. Surface mounted with two
#6 (M 3.5 x 0.6) screws or snaps onto a 35 mm
DIN rail. Uses PSC8 hold-down clips.
NDS-11 11-pin Socket
1-pin 35mm DIN rail or surface mount. Rated
at 10A @ 300VAC. Surface mounted with two
#6 (M 3.5 x 0.6) screws or snaps onto a 35 mm
DIN rail. Uses PSC11 hold-down clips.
PSC8 or PSC11 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use PSC8
with NDS-8 Octal Socket or PSC11 with NDS-11
Socket. Sold in pairs.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
ARP SERIES
Specifications
Input
Tolerance
24VAC -15% to 20%
120 & 230VAC -20% to 10%
AC Line Frequency 50/60Hz
Output
Type Electromechanical relay
Form SPDT, DPDT, or cross-wired DPDT
Rating 10A resistive @ 120/240VAC & 28 VDC;
1/3 hp @ 120/240VAC
Maximum Voltage 250VAC
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Protection
Isolation Voltage ≥ 1500V RMS input to output
Mechanical
Mounting Plug-in socket
Dimensions H 60.7 mm (2.39”); W 45.2 mm (1.78”);
D 81.3 mm (3.2”)
Termination Octal 8-pin or magnal 11-pin
Environmental
Operating/Storage
Temperature -20° to 60°C / -30° to 85°C
Weight 5.6 oz (159 g) approx.
NOTE: Unit does not have debounce time delay.
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 175
Protection Relays
Pump Controls and Liquid Level Controls – Alternating Relays
Littelfuse.com/50r400alt
480VAC Application, Panel Mount
50R-400-ALT
Wiring Diagram
Description
The 50R-400-ALT alternating relays are used to alternate
between two loads, most commonly in duplex pumping and
compressor applications to balance the runtime of both loads.
When used in single float applications, the alternating relay
changes state after the float switch opens*, forcing the other
pump to run the next time the float closes. When used in dual
float applications, the alternating relay will allow both pumps to
run simultaneously when the lead and lag floats are both closed.
An adjustment knob provides the option to force one pump to
run every time the float switch is closed. This is helpful when
one pump has been removed for repair or for test purposes.
A built-in debounce feature prevents the alternating relay from
changing state if the float contact bounces momentarily.
*The alternating relay will not switch states while current is flowing. Switching will only occur
after current has been sensed, followed by loss of current for the duration of the debounce
time delay.
Features & Benefits
FEATURES BENEFITS
Debounce time delay Prevents rapid cycling caused by waves or splashing
in the tank
LED indicators Visual indication of load operation in
duplex application
Built-in manual switch
to force load operation
Helpful to control load operation when performing
periodic maintenance or pump repair
Operates from
380 - 480VAC
No transformer required to provide 120 - 240V for
control circuit
Specifications
Input Characteristics
Supply Voltage 380-480VAC
Supply Current 40mA
Functional Characteristics
Control Input Impedance (min) 1MΩ
Output Characteristics
Output Contact Rating
Pilot Duty 470VA @ 600VAC
General Purpose 10A
Debounce Time Delay 1 second
General Characteristics
Maximum Input Power 5 W
Terminal
Torque 7 in.-lbs.
Wire Size 12-18AWG
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947
Dimensions H 74.4 mm (2.93”); W 133.9 mm (5.27”);
D 74.9 mm (2.95”)
Weight 0.98 lb. (15.68 oz., 444.52 g)
Mounting Method #8 screws
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 509, Figure 6.
176 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls – Intrinsically Safe Relays
Littelfuse.com/iss100
ISS-100
Description
The ISS-100 switches are UL 913 listed as an associated
apparatus for interfacing between hazardous and non-hazardous
areas. These units must be installed in a non-hazardous area.
Features & Benefits
FEATURES BENEFITS
Finger-safe terminals Meets IEC 61000 safety requirements
Compact design for DIN
rail or surface mount Allows flexiblility in panel installation
LED Status Indicator Visual indication of relay engagement
Isolated output relay Allows connection to PLC or control voltage
Specifications
Input Characteristics
Supply Voltage 90-120VAC
Functional Characteristics
Probe Sense Voltage 5vdc continuous
Output Characteristics
Output Contact Rating
Pilot Duty 180VA @120VAC, C300
General Purpose 8A @120VAC
Relay Contact Life (Electrical) 100,000 cycles min. @ rated load
Relay Contact Life (Mechanical) 10,000,000 cycles
General Characteristics
Temperature Range -20° to 55°C (-4° to 131°F)
Maximum Input Power 1.5 W
Wire range 12 to 20 AWG
Terminal Torque 3.5 to 4.5 in.-lbs. (max. 4.5 in.-lbs.)
Provides Intrinsically-Safe
Circuits in the
following locations: Division 1 and 2
Class I, Groups A,B,C,D;
Class II, Groups E,F,G;
and Class III
Entity Parameters Voc = 16.8V Po=Voc*Isc
Isc = 1.2mA 4
La = 100mH
Ca= 0.39uF
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity (RFI) IEC 61000-4-3, Level 3, 10V/m
Fast Transients IEC 61000-4-4, Level 3, 4kV input power
Safety Mark
UL UL913 Sixth Edition (File #E233355)
Dimensions H 88.9 mm (3.5”); W 52.93 mm (2.08”);
D 59.69 mm (2.35”)
Weight 0.5 lb. (8 oz., 226.8 g)
Mounting Method 35mm DIN rail or Surface Mount
(#6 or #8 screws)
Single-Channel Intrinsically Safe Switch
Wiring Diagram
115 VAC
INPUT
ISS-100
OUTPUT ENERGIZED
LOAD
See Notes 1 & 2
See Note 3
1. Maximum distance between unit and switch
contact is 10,000 feet.
2. All non-intrinsically safe wiring shall be separated
from intrinsically safe wiring. Description of
special wiring methods can be found in the
National Electrical Code ANSI/NFPA 70, Article
504 Intrinsically Safe Systems. Check your state
and local codes for additional requirements.
3. All switch contacts shall be non-energy storing,
containing no inductance or capacitance.
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 510, Figure 10.
© 2022 Littelfuse, Inc. 177
Protection Relays
Pump Controls and Liquid Level Controls – Intrinsically Safe Relays
Littelfuse.com/iss101
ISS-101
Description
The ISS-101 switches are UL 913 listed as an associated
apparatus for interfacing between hazardous and non-hazardous
areas. These units must be installed in a non-hazardous area.
Must use Model OT08PC socket for UL Rating!
Note: Manufacturer’s recommended screw terminal torque for the OT Series
Octal Sockets is 12 in.-lbs.
Features & Benefits
FEATURES BENEFITS
Compact design for DIN
rail or surface mount via
octal base
Allows flexibility in panel installation
LED status indicator Visual indication of relay engagement
Isolated output relay Allows connection to PLC or control voltage
Standard 8-pin socket Pop-in replacement for other manufacturers’ parts
Accessories (included)
OT08PC 8-pin Octal Socket
Octal Socket for plug-in units. 8-pin surface &
DIN rail mountable. Rated for 10A @ 600VAC.
Specifications
Input Characteristics
Supply Voltage 90-120VAC
Functional Characteristics
Probe Sense Voltage 5VDC continuous
Output Characteristics
Output Contact Rating
Pilot Duty 180VA @120VAC, C300
General Purpose 8A @120VAC
Relay Contact Life (Electrical) 100,000 cycles min. @ rated load
Relay Contact Life
(Mechanical) 10,000,000 cycles
General Characteristics
Temperature Range -20° to 55°C (-4° to 131°F)
Maximum Input Power 1.5 W
Wire range 12 to 20 AWG
Terminal Torque 3.5 to 4.5 in.-lbs. (max. 4.5 in.-lbs.)
Provides Intrinsically-Safe
Circuits in the
following locations: Division 1 and 2
Class I, Groups A,B,C,D;
Class II, Groups E,F,G;
and Class III
Entity Parameters Voc = 16.8V Po=Voc*Isc
I
sc = 1.2mA 4
La = 100mH
Ca= 0.39uF
Single-Channel Intrinsically Safe Switch
Wiring Diagram
115 VAC INPUT
See Notes 1 & 2
See Note 3
LOAD
CONTROL DRAWING ISS-101
NOTES:
1. Maximum distance between unit and switch
contact is 10,000 feet.
2. All non-intrinsically safe wiring shall be
separated from intrinsically safe wiring.
Description of special wiring methods can be
found in the National Electrical Code
ANSI/NFPA 70, Article 504 Intrinsically Safe
Systems. Check your state and local
codes for additional requirements.
3. All switch contacts shall be non-energy storing,
containing no inductance or capacitance.
See Install Bulletin for full instructions and
Hazardous Location information.
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 509, Figure 8.
178 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls – Intrinsically Safe Relays
Littelfuse.com/iss101
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity (RFI) IEC 61000-4-3, Level 3, 10V/m
Fast Transients IEC 61000-4-4, Level 3, 4kV input power
Safety Mark
UL UL913 Sixth Edition (File #E233355)
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.375”);
D 104.78 mm (4.125”)
Weight 0.5 lb. (8 oz., 226.8 g)
Mounting Method DIN rail or surface mount
(plug into OT08PC socket)
ISS-101
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 179
Protection Relays
Pump Controls and Liquid Level Controls – Intrinsically Safe Relays
Littelfuse.com/iss102
Two-Channel Intrinsically Safe Switch
ISS-102 SERIES
Description
The ISS-102 is a two-channel, intrinsically-safe switch designed
for multiple uses including a pump-up/pump-down (latching)
controller or two-channel switch. LEDs indicate the state of the
intrinsically-safe inputs and output relays and user-selectable
options are available including a variable resistance threshold for
float inputs. The ISS-102 enclosure is surface or DIN rail mountable.
-LC Each input channel is active when the corresponding
switch is closed. When the lag input (CH2) is activated, the
output closes. Applying latching logic, the output contact
remains closed until the lead (CH1) and the lag (CH2) inputs are
deactivated. Sensitivity is fixed at 100kOhms with a debounce
time delay of 2 seconds.
-DCS This dual-channel switch has two Form A output relays.
Two LEDs illuminate the output state of their respective Form A
relay. Resistance probes or switches can be used on its inputs.
Sensitivity is fixed at 100kOhms with a debounce time delay of
0.5 seconds.
-MC By selecting the proper functionality through the DIP
switches, you can define a pump-up or pump-down, single or
dual channel non-latching switch. The sensitivity adjustment
(4.7k-100kOhms) allows you to define the input impedance at
which the output relays (one Form A & one Form C) will change
state, with a debounce time delay of 0.5 or 2 seconds.
Features & Benefits
FEATURES BENEFITS
Finger-safe terminals Meets IEC 61000 safety requirements
Compact design for DIN
rail or surface mount Allows flexiblility in panel installation
LED status indicator Visual indication of relay engagement
Two input channels Flexibility for pump up/pump down latching
controller or two-channel switch applications
Wiring Diagrams
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION
ISS-102A-LC 120VAC Latching Controller
ISS-102AA-DCS 120VAC Dual Channel Switch
ISS-102ACI-MC 120VAC Multi-function Controller
ISS-102C-M-LC 120VAC MSHA* evaluated
ISS-102CCI-M-MC 120VAC MSHA* evaluated
* Mine Safety and Health Administration
ISS-102A
See Notes 1 & 2
See Note 3
120VAC
LOAD
CH1 Com CH2
1 2 3
4 5 7 6
120VAC
ISS-102AA
See Notes 1 & 2
See Note 3
FORM A
FORM A
CH1 Com CH2
LOAD
1
LOAD
2
1 9 2 3
4 5 7 6
For more wiring diagrams and notes, see next page.
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 510, Figure 10.
180 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls – Intrinsically Safe Relays
Littelfuse.com/iss102
Specifications
Functional Characteristics
Debounce Time 0.5 or 2 seconds
Probe Sense Voltage 5vdc pulsed
Output Characteristics
Output Contact Rating
Pilot Duty 180VA @120VAC, C150
General Purpose 5A @120VAC
Relay Contact Life (Electrical) 100,000 cycles min. @ rated load
Relay Contact Life (Mechanical) 10,000,000 cycles
Output Relay Type
ISS-102A-LC One Form A
ISS-102AA-DCS Two Form A
ISS-102ACI-MC One Form A & One isolated Form C
ISS-102C-M-LC One Form C
ISS-102CCI-M-MC Two Form C (one isolated)
General Characteristics
Temperature Range -20° to 55°C (-4° to 131°F)
Maximum Input Power 2 W
Wire Range 12 to 20 AWG
Terminal Torque 3.5 to 4.5 in.-lbs. (max. 4.5 in.-lbs.)
Provides Intrinsically-Safe
Circuits in the
following locations: Division 1 and 2
Class I, Groups A,B,C,D;
Class II, Groups E,F,G;
Class III
Entity Parameters Voc = 16.8V Po=Voc*Isc
Isc = 1.2mA 4
La = 100mH
Ca = 0.39uF
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air.
Radio Frequency Immunity (RFI) IEC 61000-4-3, Level 3, 10V/m
Fast Transients IEC 61000-4-4, Level 3, 4kV input power
Safety Mark
UL UL913 Sixth Edition (File #E233355)
(except Models ISS-102C-M-LC &
ISS-102CCI-M-MC which have been
evaluated by MSHA)
Dimensions H 88.9 mm (3.5”); W 52.93 mm (2.08”);
D 59.69 mm (2.35”)
Weight 0.7 lb. (11.2 oz., 317.51 g)
Mounting Method 35mm DIN rail or Surface Mount
(#6 or #8 screws)
ISS-102 SERIES
ISS-102ACI
See Notes 1 & 2
See Note 3
FORM A
FORM C
CH1 Com CH2
120VAC 120VAC MAX
LOAD 1
LOAD 2
LOAD
3
1 2 3
4 5 7 6
10 11 12
120VAC
ISS-102C-M
LOAD
1
LOAD
2
See Notes 1 & 2
See Note 3
FORM C
1 8 2 3
4 5 7 6
ISS-102CCI-M
LOAD
1
LOAD
2
See Notes 1 & 2
See Note 3
FORM C
FORM C
120VAC
10 11 12
1 8 2 3
4 5 7 6
120VAC MAX.
LOAD 3
LOAD
4
Wiring Diagrams (continued)
NOTES:
1. Maximum distance between unit and switch
contact is 10,000 feet.
2. All non-intrinsically-safe wiring shall be separated
from intrinsically-safe wiring. Description of
special wiring methods can be found in the
National Electrical Code ANSI/NFPA 70, Article
504 Intrinsically-Safe Systems. Check your state
and local codes for additional requirements.
3. All switch contacts shall be non-energy storing,
containing no inductance or capacitance.
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 181
Protection Relays
Pump Controls and Liquid Level Controls – Intrinsically Safe Relays
Littelfuse.com/iss105
Five-Channel Intrinsically Safe Switch
ISS-105 SERIES
Description
The ISS-105 is a “smart” five-channel intrinsically safe relay and
pump controller. The ISS-105 can be configured for pump-up or
pump-down applications or as a five-channel relay covering a
wide variety of applications.
The ISS-105 has a long list of features that are needed for
multiple pump applications and can indicate low, high and
out-of-sequence alarms. If an out-of-sequence alarm occurs,
the skipped pump(s) will be started as intended.
The Model ISS-105 can be set-up to do non-alternating
control, alternating control and alternating control with one
non-alternating pump. The non-alternating pump is intended for
use with an emergency or jockey pump. The ISS-105 can start an
emergency pump once every 50 cycles to keep it working freely.
Using the built-in DIP switches, individual pumps can be disabled
when taken out of service for repair or maintenance.
Features & Benefits
J 5 intrinsically-safe input channels meeting UL913 Sixth Edition
J 4 normally open output relays and 1 SPDT output relay
J Field selectable pump control options
J Monitors float sequencing and sends signal to alarm if
out-of-sequence condition occurs
J High and/or low alarm options depending on the number of
pumps and settings
J Output contacts for audible alarm
J Meets IEC EMC standards for Electrical Fast Transients (EFT),
Electrostatic Discharge (ESD) and Radio Frequency Immunity (RFI)
J DIN rail or surface mountable allows flexibility in
panel installation
J User-selectable alternator/non-alternator option
J Non-alternating pump option for emergency or
jockey applications
J Pump disable switches make it easy to disable individual
pumps when they are out for service or repair
J Adjustable lag pump delay for all pumping modes
J Adjustable delay-on-make/break timer in five-channel
relay mode
J Finger-safe terminals meet IEC 61000 safety requirements
Wiring Diagram
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION
ISS-105 120VAC Intrinsically-Safe & Pump Controller
ISS-105-ISO 120VAC Intrinsically-Safe Only
ISS-105-ISO-3 120VAC 3-Channel Intrinsically-Safe Only
ISS-105-ISO-4 120VAC 4-Channel Intrinsically-Safe Only
ISS-105-ISO-F 120VAC ISO with Fast Trip Relays
#1 #2 #3 #4 #5 C
MODEL ISS-105
INTRINSICALLY
SAFE INPUTS
#1
PUMP
#1
PUMP
#2
LOW
ALARM
HIGH
ALARM
LOW
ALARM
HIGH OFF LEAD LAG1 ALARM COMMON
AUDIBLE
ALARM
MODE 1
DUPLEXER
PUMP DOWN
#2 #3 #4 #5 INPUT
120 VAC
IS Super Cell
Low Alarm Float
Stop Float
Lead Float
Lag 1 Float
High Alarm Float
120 VAC
Pump
1
Pump
2
Audible Alarm
High
Alarm
Low
Alarm
PUMP
Typical Application:
Duplex Pump Down with High and Low Alarms.
Many other configurations are possible.
See users manual for more details.
TYPICAL APPLICATION:
Duplex Pump-Down with High and Low Alarms
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
For dimensional drawing see: Appendix, page 511, Figure 12.
182 © 2022 Littelfuse, Inc.
Protection Relays
Pump Controls and Liquid Level Controls – Intrinsically Safe Relays
Littelfuse.com/iss105
Specifications
Input Characteristics
Supply Voltage 120VAC
Frequency 50*/60Hz
Functional Characteristics
Probe Sense Voltage 5vdc continuous
Output Characteristics
Relay Output Rating
Pilot Duty 480VA @ 240VAC, B300
General Purpose 7A @ 240VAC
Relay Contact Life (Electrical) 100,000 cycles min. @ rated load
Relay Contact Life (Mechanical) 10,000,000 cycles
General Characteristics
Temperature Range -40° to 55°C (-40° to 131°F)
Maximum Input Power 5 W
Wire range 12 to 20 AWG
Recommended Terminal Torque 3.5 to 4.5 in.-lbs. (max. 4.5 in.-lbs.)
Provides Intrinsically-Safe
Circuits in the
following locations: Division 1 and 2
Class I, Groups A,B,C,D;
Class II, Groups E,F,G;
and Class III
Entity Parameters Voc = 16.8V Po=Voc*Isc
Isc = 1.2mA 4
La = 100mH
Ca = 0.39uF
ISS-105
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air.
Radio Frequency Immunity (RFI) IEC 61000-4-3, Level 3, 10V/m
Fast Transients IEC 61000-4-4, Level 3, 4kV input power
2kV inputs/outputs
Safety Marks
UL UL913 Sixth Edition (File #E233355)
Dimensions H 94.06 mm (3.703”); W 127.64 mm (5.025”);
D 59.69 mm (2.350”)
Weight 1.2 lbs. (19.2 oz., 544.31 g)
Mounting Method 35 mm DIN rail or Surface Mount
(#6 or #8 screws)
*Note: 50Hz will increase all delay timers by 20%.
PUMP CONTROLS & LIQUID LEVEL CONTROLS
8
© 2022 Littelfuse, Inc. 183 Littelfuse.com/relayscontrols
Protection Relays
For More Information…
on common faults and how
to fix them, visit
Littelfuse.com/MotorProtection
AC SYSTEM MONITORS/LOAD SENSORS
Current monitors provide protection against both supply line and load side faults when the motor is running. They protect against single-phasing and
current unbalance problems that can be caused by voltage supply problems, bad contactors, loose wiring, bad wires, or damaged motors. They also
provide very reliable overload and underload protection.
Littelfuse voltage monitors are microcontroller based and factory calibrated for highly accurate and precise voltage measurements providing high
sensitivity while minimizing nuisance tripping. This precise operation can detect a single-phase condition or voltage unbalance even with regenerated
voltages present.
Current Monitoring Relays and Transducers
CP5 Series Single-Phase Current Monitor................... 184
LSR-0 Load Sensor, Low Cost Relay ................... 185
LSR-XXX Series Load Sensors............................................. 186
LSRU Series Load Sensors............................................. 187
LSRX / LSRX-C Series Load Sensors, Low Cost Relays ................ 189
ECS Series Current Sensors ........................................ 191
ECSW Series Current Sensors ........................................ 194
TCS Series Current Sensors ........................................ 197
TCSA Series Current Transducers .................................. 199
DCSA Series Current Transducers .................................. 201
LCS10T12 / LPM Series Current Indicators ..................................... 203
Voltage Monitoring Relays
50R Series.......................................................................................... 204
201-XXX-SP Series............................................................................. 206
201-XXX-SP-DPDT Series................................................................... 208
202-200-SP Series.............................................................................. 210
460-XXX-SP Series............................................................................. 212
102A Series........................................................................................ 214
201A Series........................................................................................ 216
201A-AU Series.................................................................................. 218
201-XXX-DPDT Series........................................................................ 220
202 Series.......................................................................................... 222
250A Series........................................................................................ 224
350 Series.......................................................................................... 226
355 Series.......................................................................................... 228
455 Series.......................................................................................... 230
460 Series.......................................................................................... 232
601 Series.......................................................................................... 234
601-CS-D-P1....................................................................................... 236
WVM Series....................................................................................... 238
DLMU Series...................................................................................... 240
HLMU Series...................................................................................... 243
PLMU11.............................................................................................. 245
PLM Series......................................................................................... 247
TVW Series........................................................................................ 249
TVM Series......................................................................................... 251
PLR Series.......................................................................................... 253
PLS Series.......................................................................................... 255
HLVA6I23............................................................................................ 257
KVM Series ....................................................................................... 259
AC SYSTEM MONITORS/LOAD SENSORS
9
184 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/cp5
Single-Phase Current Monitor
Wiring Diagram
Description
The CP5 Series are undercurrent monitors designed to monitor
one leg of a 3-phase system. It is commonly used as a tower
monitor on center pivot irrigation systems to detect stalled or
jammed towers to prevent over watering.
The CP5 Series has both an adjustable trip level and an
adjustable trip delay timer. When the current is sensed, the CP5
Series activates its output relay, thus starting the motor/pump.
When the current in the monitored power line falls below the
user-selectable trip point, the unit goes through a trip delay timer
and then deactivates the output relay if the monitored current
does not recover first.
Features & Benefits
FEATURES BENEFITS
Adjustable trip
level (0-5A)
Provides ability to precisely set the current trip point
for any application
Adjustable trip
delay (0-10m)
Prevents nuisance tripping due to power
line fluctuations
600V rated relay
contacts available
on CP5-460 model
Eliminates the need for a control transformer to step
voltage down to 120 - 240V for a control circuit
Specifications
Input Characteristics
Nominal Input Voltage
CP5115 115VAC
CP5460 460VAC
Frequency 50*/60Hz
Functional Characteristics
Operating Points
Trip Level 0-5 Amps
Trip Delay 0-10 minutes
Restart 1 second
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty
CP5115 480VA @ 240VAC
CP5460 470VA @ 600VAC
General Characteristics
Terminal
Torque 7 in.-lbs.
Wire Size 12-18AWG
Safety Marks
UL UL508 (File #E68520)
Dimensions H 74.4 mm (2.93”); W 133.9 mm (5.27”);
D 74.9 mm (2.95”)
Weight 1 lb. (16 oz., 453.59 g)
Mounting Method #8 screws
*Note: 50Hz will increase all delay timers by 20%
Ordering Information
MODEL LINE VOLTAGE
CP5115 115VAC
CP5460 460VAC
CP5 SERIES
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix page 509, Figure 6.
© 2022 Littelfuse, Inc. 185
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/lsr0
Description
The LSR-0 is a self-powered load sensor intended for use as a
proof relay. It is used to verify that current is flowing as intended.
It has a guaranteed 15A pull-in current and 2.5A drop-out current.
Proof relays are typically used to interlock fans, compressors,
motors, heating elements and other devices. The LSR-0 is
self-powered, that is, it draws its power from the wire being
monitored so it does not require separate control power wiring.
Features
g Self-powered
g Low cost proof relay
g Can monitor up to 135A loads
Specifications
Max Current Ratings 135A continuous
Functional Characteristics
Turn-on Threshold Fixed, 15A (max.)*
Turn-off Threshold 2.5A (min.)
Power Induced from conductor
Isolation 600VAC rms
Output Characteristics
Relay Output Rating:
Pilot Duty 480VA @ 240VAC
General Purpose 10A
General Characteristics
Temperature Range -20° to 70°C (-4° to 158°F)
Wire Size #12-24AWG
Hole Size 0.725” diameter
Terminal Torque 7 in.-lbs.
Safety Marks
CSA, CSA-NRTL/C (File #46510)
CE
Dimensions H 42.42 mm (1.67”); W 58.42 mm (2.3”);
D 90.43 mm (3.56”)
Weight 0.35 lb. (5.6 oz., 158.76 g)
Mounting Method Four #6 screws 3/4” in length
*Conductors may be looped for smaller motor applications.
Caution: This product should not be relied upon solely for safety of life or safety applications.
Self-Powered Load Sensor/Low-Cost
Proof Relay
LSR-0
Wiring Diagram
TYPICAL WIRING DIAGRAM FOR REFRIGERATION AND
OIL FAILURE CONTROL
TYPICAL WIRING DIAGRAM FOR BUILDING AUTOMATION
TYPICAL WIRING DIAGRAM FOR BUILDING AUTOMATION
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 511, Figure 14.
186 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/lsrxxx
LSR-XXX SERIES
Load Sensor
Description
The LSR-xxx Series load sensors use current levels to determine
feed rates, tool wear, loss of prime on pumps, mixer viscosity
and all types of overload and underload conditions. They
may also be used to stage pump motors, chillers and other
machinery. These devices combine a current transformer (CT)
with Form C (SPDT) relay contacts to switch alarm circuits,
contactors or any resistive or inductive load. One simple
screwdriver adjustment will calibrate the sensor for all singlephase or 3-phase applications up to 100hp.
Features
g Can monitor current of motors up to 100Hp
g Fine adjustment with 20-turn pot
g Status LEDs
Specifications
Functional Characteristics
Isolation 600VAC rms
Current Adjustment Range
(Typical) 2-100A
Current Adjustment Range
(Min-Max) 0.5-135A
Trip Setpoint Adjustable to ±1% range
Input Characteristics
Control Power:
LSR-24 24VAC
LSR-115 115VAC
LSR-230 230VAC
Max Current Ratings 135A max. continuous
Output Characteristics
Output Contact Rating (SPDT):
Pilot Duty 480VA @ 240VAC
General Purpose 10A
General Characteristics
Temperature Range -20° to 70°C (-4° to 158°F)
Wire Size #12-24AWG
Hole Size 0.725” diameter
Terminal Torque 7 in.-lbs.
Safety Marks
CSA, CSA-NRTL/C (File #46510)
CE IEC 60947
Dimensions H 42.42 mm (1.67”); W 58.42 mm (2.3”);
D 90.43 mm (3.56”)
Weight 0.4 lb. (6.4 oz., 181.44 g)
Mounting Method Four #6 screws 3/4” in length
Caution: This product should not be relied upon solely for safety of life or safety applications.
Wiring Diagram
TYPICAL WIRING DIAGRAM FOR LOAD LOSS DETECTION
TYPICAL WIRING DIAGRAM FOR OVERLOAD DETECTION
Ordering Information
MODEL LINE VOTAGE
LSR-24 24VAC
LSR-115 115VAC
LSR-230 230VAC
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 511, Figure 14.
© 2022 Littelfuse, Inc. 187
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/lsru
LSRU SERIES
Load Sensor
Description
The LSRU Series is a microcontroller-based family of load
sensors. The LSRU family of products employ three basic
types of control logic: motor control logic, alarm logic and feed
control logic.
Motor Control Logic
Several combinations of functions are available in the LSRU,
including overcurrent and undercurrent or either overcurrent
or undercurrent with variable trip, restart or extended restart
delay settings. These various versions of the LSRU trip on the
respective fault and then automatically reset after the restart
delay expires, in preparation for the next motor start. LSRUs
do not trip on undercurrent when the load turns off, this is
recognized as a normal condition.
Alarm Logic
The LSRU-AL simply indicates whether the current is between
the setpoints or outside of the setpoints. This product is best
used with a PLC or other controller where status indication
is desired.
Feed Control
The LSRU-FC is a load monitor intended to control feeder
mechanisms in a variety of applications. It stops the feeder
when the grinder, chipper, saw, auger, etc. nears overload. When
the load is reduced to a preset level, the feeder is restarted.
Features & Benefits
FEATURES BENEFITS
LED indicator Visual indication of relay status
Built in current sensor
Eliminates the need for a stand alone current
transformer and also provides isolation between the
monitored and control circuits
Adjustable current
sensing range
Provides ability to precisely set the current trip point
for any application
Wiring Diagram
Ordering Information
See next page.
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 511, Figure 14.
188 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/lsru
LSRU SERIES
Specifications
Functional Characteristics
Isolation 600VAC rms
Power 2 Watts
Motor Acceleration Time 2 seconds
When not selected as
an option:
Fixed Trip Delay 0.5 second
(-AL, -FC) 1 second
Fixed Restart Delay 1 second
(-AL only) as soon as current is within limits
(-FC only) 0.5 second
Input Characteristics
Control Power 24VAC or 115VAC
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
General Characteristics
Temperature Range -40° to 70°C (-40° to 158°F)
Wire Size #12-24AWG
Hole Size 0.725” diameter
Terminal Torque 7 in.-lbs.
Safety Marks
CSA, CSA-NRTL/C (File #46510)
CE
Dimensions H 42.42 mm (1.67”); W 58.42 mm (2.3”);
D 90.43 mm (3.56”)
Weight 0.5 lb. (8 oz., 226.8 g)
Mounting Method Four #6 screws 3/4” in length
Caution: This product should not be relied upon solely for safety of life or safety applications.
Ordering Information
MODEL LINE VOTAGE CURRENT RANGE DESCRIPTION
LSRU-024-AL-2 24VAC 5-25A Alarm logic
LSRU-024-AL-3 24VAC 25-100A Alarm logic
LSRU-115-AL-1.5 115VAC 0-10A Alarm logic
LSRU-115-AL-2 115VAC 5-25A Alarm logic
LSRU-115-AL-3 115VAC 25-100A Alarm logic
LSRU-115-FC-1.5 115VAC 0-10A Feed control logic
LSRU-115-OT-1.5 115VAC 0-10A Motor control logic with overcurrent trip, adj trip delay (0.5-60s)
LSRU-115-OT-2 115VAC 5-25A Motor control logic with overcurrent trip, adj trip delay (0.5-60s)
LSRU-115-OT-3 115VAC 25-100A Motor control logic with overcurrent trip, adj trip delay (0.5-60s)
LSRU-115-OR-1.5 115VAC 0-10A Motor control logic with overcurrent trip, adj restart delay (0.5-300s, manual)
LSRU-115-OR-2 115VAC 5-25A Motor control logic with overcurrent trip, adj restart delay (0.5-300s, manual)
LSRU-115-UE-2 115VAC 5-25A Motor control logic with undercurrent trip, adj ext restart delay (2-300m, manual)
LSRU-115-UT-2 115VAC 5-25A Motor control logic with undercurrent trip, adj trip delay (0.5-60s)
LSRU-115-UT-3 115VAC 25-100A Motor control logic with undercurrent trip, adj trip delay (0.5-60s)
LSRU-115-UR-2 115VAC 5-25A Motor control logic with undercurrent trip, adj restart delay (0.5-300s, manual)
LSRU-115-OU-1.5 115VAC 0-10A Motor control logic with overcurrent and undercurrent trip
LSRU-115-OU-2 115VAC 5-25A Motor control logic with overcurrent and undercurrent trip
LSRU-115-OU-3 115VAC 25-100A Motor control logic with overcurrent and undercurrent trip
PART # KEY
O = Overcurrent Trip
U = Undercurrent Trip
T = Adj. Trip Delay (0.5-60 seconds)
R = Adj. Restart Delay (0.5-300 seconds, Manual)
E = Adj. Extended Restart Delay (2-300 minutes, Manual)
1.5 = 0-10 Amps
2 = 5-25 Amps
3 = 25-100 Amps
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 189
Protection Relays
Current Monitoring Relays and Transducers
LSRX / LSRX-C SERIES
Self-Powered Load Sensor, Low-Cost
Proof Relay
Wiring Diagram
Description
The LSRX/LSRX-C Series are AC current sensors designed to
energize the output contact whenever 4.5 Amps or greater is
present. The LSRX/LSRX-C Series is used commonly as an AC
current proof relay to indicate if a motor is operating. It can also
be used to interlock fans, compressors and motors; to indicate
equipment status such as feed rates, tool wear, loss of prime
on pumps, mixer viscosity and all types of current sensing
conditions or to stage pump motors, chillers, or other machinery.
This device combines a current transformer (CT), transducer
and high current output relay together to switch alarm circuits,
contactors and most resistive or inductive loads. The LSRX/
LSRX-C Series can perform the function of an auxiliary contact,
yet has the advantages of universal application and isolation.
Features & Benefits
FEATURES BENEFITS
Self-powered Eliminates need for separate control voltage. Draws
power from wire being monitored
Quick-connect terminals Saves time at installation
LED indication Visual indication of relay status
Built in current sensor
will monitor up to
200A loads
Eliminates the need for a stand alone current
transformer and also provides isolation between
the monitored and control circuits
Accessories
Informer IR Kit-36 (36” infrared adapter cable)
Attaches to the face of the unit to provide
remote diagnostics without opening the panel.
Specifications
Input Characteristics
Operating Current 5-200A Continuous
Minimum Pull-in Current 4.5A (typical), 7.0A (max)*
Power Induced from AC conductor
Output Characteristics
Relay Output Rating
(SPST - Form A)
Pilot Duty 480VA @ 240VAC, B300
General Purpose 5A @ 240VAC
Electrical Life 1x105
Mechanical Life 1x107
Maximum Conductor
Diameter 0.7 in.
Output Terminals
LSRX 0.25” quick-connect fast-ons
LSRX-C depluggable screw terminals
Torque Rating 3.0 in.-lbs.
Figure 1: Typical Wiring Diagram
CONTROL
VOLTAGE
MOTOR
LSRX-C
INDICATOR
LIGHT
L1 L2 L3
INPUT
POWER
Ordering Information
MODEL DESCRIPTION
LSRX Fast-on terminal
LSRX-C Depluggable screw terminals
LSRX-OEM Fast-on terminals, 10 pack
Littelfuse.com/lsrx-lsrxc
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 511, Figure 13.
190 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/lsrx-lsrxc
General Characteristics
Temperature Range:
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Hole Size 0.72” diameter
Wire Size 12-26 AWG
Output Relay Status Indicator LED
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 2, 4kV contact, 4kV air
Fast Transient Burst IEC 61000-4-4, Level 3, 2kV power,
1kV input/output
Surge
IEC 61000-4-5, Level 3, 2kV line-to-line;
2kV line-to-ground
Safety Marks
UL UL508 Recognized (File #E68520)
CE IEC 60947
Dimensions H 68.58 mm (2.7”); W 28.7 mm (1.13”);
D 63.5 mm (2.5”)
Weight 0.3 lb. (4.8 oz., 136.08 g)
Mounting Method Surface Mount
*Conductors may be looped for smaller motor applications.
LSRX / LSRX-C SERIES
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 191
Protection Relays
Current Monitoring Relays and Transducers
ECS SERIES
Description
The ECS Series of single-phase AC current sensors is a universal,
overcurrent or undercurrent sensing control. Its built-in toroidal
sensor eliminates the inconvenience of installing a stand-alone
current transformer. Includes onboard adjustments for current
sensing mode, trip point, and trip delay. Detects over or
undercurrent events like locked rotor, loss of load, an open heater
or lamp load, or proves an operation is taking place or has ended.
Operation
Input voltage must be supplied at all times for proper operation.
When a fault is sensed throughout the trip delay, the output
relay is energized. When the current returns to the normal run
condition or zero, the output and the delay are reset. If a fault is
sensed and then corrected before the trip delay is completed,
the relay will not energize and the trip delay is reset to zero.
Adjustment
Select the desired function, over or under current sensing.
Set the trip point and trip delay to approximate settings. Apply
power to the ECS and the monitored load. Turn adjustment and
watch the LED. LED will light; turn slightly in opposite direction
until LED is off. Adjustment can be done while connected to the
control circuitry if the trip delay is set at maximum. To increase
sensitivity, multiple turns may be made through the ECS’s
toroidal sensor. The appropriate trip point range is determined by
multiplying the amperage load by the number of turns/passes
through the toroidal sensor. When using an external CT, select
a 2VA, 0-5A output CT rated for the current to be monitored.
Select ECS adjustment range 0. Pass one secondary wire
lead through the ECS toroid and connect the secondary leads
together.
Features & Benefits
FEATURES BENEFITS
Built-in toroidal
current sensing
Eliminates need to install stand-alone
current transformer and provides isolation from
monitored circuit
Encapsulated Protects against shock, vibration, and humidity
Adjustable mode, trip
point and trip delay Provides flexibility for use in many applications
10A, SPDT isolated
relay output Allows control of AC voltage loads
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
Wiring Diagram
V = Voltage
I> = Overcurrent
I< = Undercurrent
W = Insulated Wire Carrying
Monitored Current
Relay contacts are isolated.
Arrow on the toroid points
toward the load.
Current Sensors
Ordering Information
See next page.
Littelfuse.com/ecs
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 34.
192 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/ecs
ECS SERIES
Ordering Information
MODEL SENSING INPUT VOLTAGE TRIP POINT ADJUSTABLE TRIP DELAY SENSING DELAY ON STARTUP
ECS20BC Selectable, over or undercurrent 24VAC 0.5 - 5A 0.5 - 50s 1s
ECS21BC Selectable, over or undercurrent 24VAC 2 - 20A 0.5 - 50s 1s
ECS2HBC Selectable, over or undercurrent 24VAC 5 - 50A 0.5 - 50s 1s
ECS30AC Selectable, over or undercurrent 24VDC 0.5 - 5A 0.150 - 7s 1s
ECS40A Selectable, over or undercurrent 120VAC 0.5 - 5A 0.150 - 7s 0s
ECS40AC Selectable, over or undercurrent 120VAC 0.5 - 5A 0.150 - 7s 1s
ECS40BC Selectable, over or undercurrent 120VAC 0.5 - 5A 0.5 - 50s 1s
ECS41A Selectable, over or undercurrent 120VAC 2 - 20A 0.150 - 7s 0s
ECS41AC Selectable, over or undercurrent 120VAC 2 - 20A 0.150 - 7s 1s
ECS41BC Selectable, over or undercurrent 120VAC 2 - 20A 0.5 - 50s 1s
ECS41BD Selectable, over or undercurrent 120VAC 2 - 20A 0.5 - 50s 2s
ECS41BH Selectable, over or undercurrent 120VAC 2 - 20A 0.5 - 50s 6s
ECS4HBC Selectable, over or undercurrent 120VAC 5 - 50A 0.5 - 50s 1s
ECS4HBH Selectable, over or undercurrent 120VAC 5 - 50A 0.5 - 50s 6s
ECS60AH Selectable, over or undercurrent 230VAC 0.5 - 5A 0.150 - 7s 6s
ECS60BC Selectable, over or undercurrent 230VAC 0.5 - 5A 0.5 - 50s 1s
ECS61BC Selectable, over or undercurrent 230VAC 2 - 20A 0.5 - 50s 1s
ECS6HAH Selectable, over or undercurrent 230VAC 5 - 50A 0.150 - 7s 6s
ECSH21F2.5C Overcurrent 24VAC 2 - 20A 2.5s 1s
ECSH30AC Overcurrent 24VDC 0.5 - 5A 0.150 - 7s 1s
ECSH31AD Overcurrent 24VDC 2 - 20A 0.150 - 7s 2s
ECSH31F.08D Overcurrent 24VDC 2 - 20A 0.08s 2s
ECSH3HF0.08D Overcurrent 24VDC 5 - 50A 0.08s 2s
ECSH34F.08C Overcurrent 24VDC 4A non-adjustable 0.08s 1s
ECSH40A Overcurrent 120VAC 0.5 - 5A 0.150 - 7s 0s
ECSH40AC Overcurrent 120VAC 0.5 - 5A 0.150 - 7s 1s
ECSH40AD Overcurrent 120VAC 0.5 - 5A 0.150 - 7s 2s
ECSH41AC Overcurrent 120VAC 2 - 20A 0.150 - 7s 1s
ECSH41AD Overcurrent 120VAC 2 - 20A 0.150 - 7s 2s
ECSH41BC Overcurrent 120VAC 2 - 20A 0.5 - 50s 1s
ECSH41F.08D Overcurrent 120VAC 2 - 20A 0.08s 2s
ECSH4HAD Overcurrent 120VAC 5 - 50A 0.150 - 7s 2s
ECSH4HF.08D Overcurrent 120VAC 5 - 50A 0.08s 2s
ECSH61AD Overcurrent 230VAC 2 - 20A 0.150 - 7s 2s
ECSL31A Undercurrent 24VDC 2 - 20A 0.150 - 7s 0s
ECSL40AC Undercurrent 120VAC 0.5 - 5A 0.150 - 7s 1s
ECSL40B Undercurrent 120VAC 0.5 - 5A 0.5 - 50s 0s
ECSL40BH Undercurrent 120VAC 0.5 - 5A 0.5 - 50s 6s
ECSL41A Undercurrent 120VAC 2 - 20A 0.150 - 7s 0s
ECSL41AD Undercurrent 120VAC 2 - 20A 0.150 - 7s 2s
ECSH4HAD Overcurrent 120VAC 5 - 50A 0.150 - 7s 2s
ECSL41AH Undercurrent 120VAC 2 - 20A 0.150 - 7s 6s
ECSL4HAC Undercurrent 120VAC 5 - 50A 0.150 - 7s 1s
ECSL4HBH Undercurrent 120VAC 5 - 50A 0.5 - 50s 6s
ECSL61AH Undercurrent 230VAC 2 - 20A 0.150 - 7s 6s
ECSL6HAC Undercurrent 230VAC 5 - 50A 0.150 - 7s 1s
If you don’t find the part you need, call us for a custom product 800-843-8848
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 193
Protection Relays
Current Monitoring Relays and Transducers
ECS SERIES
Specifications
Sensor
Type Toroidal through hole wiring
Mode Over or undercurrent, switch selectable on the
unit or factory fixed
Trip Point Range 0.5 - 50A in 3 adjustable ranges or fixed
Tolerance
Adjustable Guaranteed range
Fixed 0.5 - 25A: 0.5A or ±5% whichever is less;
26 - 50A: ±2.5%
Maximum Allowable Current Steady – 50A turns;
Inrush – 300A turns for 10s
Trip Point Hysteresis ≅ ±5%
Trip Point vs. Temperature ±5%
Response Time ≤ 75ms
Frequency 45/500 Hz
Type of Detection Peak detection
Trip Delay
Type Analog
Range
Adjustable 0.150 - 7s; 0.5 - 50s (guaranteed ranges)
Factory Fixed +/- 10%
Delay vs. Temperature ±15%
Sensing Delay on Startup Factory fixed 0 - 6s: +40%, -0%
Input
Voltage 24 , 120, or 230VAC; 12 or 24VDC
Tolerance
12VDC & 24VDC/AC -15 - 20%
120 & 230VAC -20 - 10%
AC Line Frequency 50/60 Hz
Output
Type Electromechanical relay
Form Isolated, SPDT
Rating 10A resistive @ 240VAC; 1/4 hp @ 125VAC;
1/2 hp @ 250VAC
Life Mechanical – 1 x 106
; Electrical – 1 x 105
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 2500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with two #6 (M3.5 x 0.6) screws
Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);
D 44.5 mm (1.75”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals (5)
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 6.4 oz (181 g)
Function Diagrams
Littelfuse.com/ecs
NO = Normally Open
Contact
NC = Normally Closed
Contact
A = Sensing Delay On
Start Up
TD = Trip Delay
TP = Trip Point
R = Reset
OC = Monitored Current
Overcurrent Sensing
Undercurrent Sensing
AC SYSTEM MONITORS/LOAD SENSORS
9
194 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/ecsw
ECSW SERIES
Description
The ECSW Series of single-phase, AC window, current sensors
includes adjustable overcurrent and undercurrent trip points.
Detects locked rotor, jam, loss of load, an open heater or
lamp load, a broken belt, or loss of suction. LED’s aid in trip
point adjustment and provide fault indication. The built-in
toroidal sensor eliminates the need for an external current
transformer. The output can be electrically latched after a fault,
or automatically reset. Remote resetting of a latched output
by removing input voltage. The unit includes switch selectable
zero current detection and normally de-energized or energized
output operation. Time delays are included to improve operation
and eliminate nuisance tripping.
Features & Benefits
FEATURES BENEFITS
Built-in toroidal
current sensing
Eliminates need to install stand alone
current transformer and provides isolation from
monitored circuit
Encapsulated Protects against shock, vibration, and humidity
LED indication Visual indication for trip point adjustment and fault
indication
Multiple switch
selectable features
User selectable zero current detection, latched,
normally de-energized, or energized output adds
application flexibility
Adjustable trip delay Eliminates nuisance tripping and prevents
rapid cycling
Isolated 10A, SPDT
output contacts Allows control of loads for AC or DC voltages
Operation
When the input voltage is applied, sensing delay on startup
begins and the output transfers (if normally energized is
selected). Upon completion of the startup delay, sensing of
the monitored current begins. As long as current is above
undercurrent trip point and below the overcurrent trip point
(inside the window), the output relay remains in its normal
operating condition and both red LED’s are OFF. The green LED
glows when the output is energized. If current varies outside
the window, the associated red LED glows, and the trip delay
begins. If the current remains outside the window for the full
Wiring Diagram
Current Sensors
L1
N/L2
MC = Motor Contactor
M = Motor
F = Fuses
OL = Overload
RSW = Reset Switch
FSW = Fan or Float Contacts
CR = Control Relay
CS = Current Sensor
MCC = Motor Contactor Coil
V = Voltage
I> = Adjustable Overcurrent
I< = Adjustable Undercurrent
W = Monitored Wire
∆T - Adjustable Trip Delay
Ordering Information
MODEL INPUT VOLTAGE TRIP POINT ADJUST. TRIP DELAY SENSING DELAY ON STARTUP CONNECT.
ECSW3LABT 24VDC 0.5 - 5A 0.150 - 7s 0.1s Terminal blocks
ECSW4HBHT 120VAC 5 - 50A 0.5 - 50s 6s Terminal blocks
ECSW4LADT 120VAC 0.5 - 5A 0.150 - 7s 2s Terminal blocks
ECSW4LBHT 120VAC 0.5 - 5A 0.5 - 50s 6s Terminal blocks
ECSW4MACT 120VAC 2 - 20A 0.150 - 7s 1s Terminal blocks
ECSW4MBHT 120VAC 2 - 20A 0.5 - 50s 6s Terminal blocks
ECSW4MBGT 120VAC 2 - 20A 0.5 - 50s 5s Terminal blocks
ECSW6MBHT 230VAC 2 - 20A 0.5 - 50s 6s Terminal blocks
If you don’t find the part you need, call us for a custom product 800-843-8848
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 34.
© 2022 Littelfuse, Inc. 195
Protection Relays
Current Monitoring Relays and Transducers
ECSW SERIES
trip delay, the relay transfers to fault condition state. If the
current returns to normal levels (inside the window) during the
trip delay, the red LED goes OFF, the trip delay is reset, and the
output remains in the normal condition.
Reset: Remove input voltage or open latch switch. If zero
current detection is selected, the unit will reset as soon as zero
current is detected.
Operation With Zero Current Detection Enabled: If the
current decreases to zero within the trip delay period, then
zero current is viewed as an acceptable current level. The unit’s
output remains in its normal operating state. This allows the
monitored load to cycle ON and OFF without nuisance tripping
the ECSW. Zero current is defined as current flow of less than
250 milliamp-turns.
Note: When zero current detect is selected, the latching
operation of switch SW2 is canceled; the output will not latch
after a fault trip.
Notes on Operation
1. There is no hysteresis on the trip points. The overcurrent
and undercurrent trip points should be adjusted to provide
adequate protection against short cycling.
2. If the upper setpoint is set below the lower setpoint, both
red LED’s will glow indicating a setting error.
3. If zero current detection is selected (SW2 ON), and the
system is wired to disconnect the monitored load, the
system may short cycle. After the unit trips, the load deenergizes, and zero current is detected. The ECSW resets,
and the load energizes again immediately and may be
short cycled.
4. The sensing delay on start up only occurs when input voltage
is applied. When zero current detection is selected, the trip
delay must be longer than the duration of the inrush current
or the unit will trip on the inrush current.
Typical Pump or Fan Protection Circuit Operation
Window Current Sensing: With the ECSW connected as
shown in the diagram, a load may be monitored and controlled
for over and undercurrent. The ECSW Series’ on board CT (CS)
may be placed on the line or load side of the contactor. The
ECSW selection switches are set for zero current sensing (see
Selector Switch SW2) and the output selection is normally deenergized (see Selector Switch SW3). The input voltage (V) is
applied to the ECSW continually. As the control switch (FSW) is
closed, the input voltage (V) is applied to the motor contactor
coil (MCC), and the motor (M) energizes. As long as the current
remains below the overcurrent and above the undercurrent
trip points, the ECSW’s output contacts remain de-energized.
If the load current should rise above or fall below a trip point,
for the full trip delay, the normally open (NO) contact will
close, energizing the control relay (CR) coil. The CR normally
closed contact (CR1) opens and the MCC de-energizes and
CR latches on through its normally open contacts (CR2). Reset
is accomplished by momentarily opening the normally closed
reset switch (RSW).
Note: If the current falls to zero within the trip delay, the ECSW
remains de-energized. The sensing delay on startup occurs
when input voltage is applied therefore trip delay must be longer
than the duration of the motor’s inrush current. The external
latching relay CR2 is required in this system to prevent rapid
cycling. A timer can be added to provide an automatic reset.
Selector Switch
Not Used
Latched
Zero I
Output - Normally Energized
ON OFF
SW1
SW2
SW3
Mode Selection Switches
SW1 = Latched or Auto reset selector
OFF - Automatic reset after a fault
ON - Output relay latches after a fault trips the unit
SW2 = Zero current detection (below 250 mA)
OFF - Zero current detection disabled
ON - Zero current detection enabled
SW3 = Output during normal operation
OFF - Output relay de-energized
ON - Output relay energized
Littelfuse.com/ecsw
AC SYSTEM MONITORS/LOAD SENSORS
9
196 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/ecsw
ECSW SERIES
Specifications
Sensor
Type Toroid, through hole wiring for up to #4 AWG
(21.1 mm2
) THHN wire
Mode Over & undercurrent trip points
(window current sensing)
Trip Point Range 0.5 - 50A in 3 adjustable ranges
Tolerance Guaranteed range
Maximum Allowable Current Steady - 50A turns; Inrush - 300A turns for 10s
Time Point vs Temp.
& Voltage ±5%
Response Time ≤ 75ms
Frequency 45/500 Hz
Type of Detection Peak detection
Zero Current Detection < 250mA turns typical
Time Delay
Range 0.15 - 50s in 2 adjustable ranges
or 0.1 - 50s fixed
Tolerance Adjustable: guaranteed range; Fixed: ±10%
Sensing Delay On Start Up Fixed ≅ 0.1 - 6s in 1s increments
Tolerance +40% -0%
Delay vs. Temp. & Voltage ±15%
Input
Voltage 24, 120, or 230VAC; 12 or 24VDC
Tolerance
12VDC & 24VDC/AC -15% - 20%
120 & 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Output
Type Electromechanical relay
Mode: Switch Selectable
ON Energized during normal operation,
de-energized after a fault
OFF De-energized during normal operation,
energizes during a fault
Form Isolated, SPDT
Rating 10A resistive @ 240VAC; 1/4 hp @ 125VAC;
1/2 hp @ 250VAC
Life Mechanical - 1 x 106
; Electrical - 1 x 105
Latch
Type Electrical
Reset Remove input voltage
Function Switch selectable latching function
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Isolation Voltage ≥ 2500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with two #6 (M3.5 x 0.6) screws
Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);
D 44.5 mm (1.75”)
Termination 0.197 in. (5 mm) terminal blocks for up to #12
(3.2 mm2
) AWG wire
Environmental
Operating/Storage
Temperature -40° to 60° C/-40° to 85° C
Humidity 95% relative, non-condensing
Weight ≅ 6.4 oz (181 g)
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 197
Protection Relays
Current Monitoring Relays and Transducers
TCS SERIES
Description
The TCS Series is a low cost method of go/no go current
detection. It includes a solid-state output to sink or source
current when connected directly to a standard PLC digital input
module. Its normally open or normally closed output can also be
used to control relays, lamps, valves, and small heaters rated up
to 1A steady, 10A inrush. The TCS is self-powered (no external
power required to operate the unit) and available with an
adjustable actuation range of 2 - 20A or factory fixed actuation
points from 2 - 45A.
Operation
Normally Open: When a current equal to or greater than the
actuate current is passed through the toroidal sensor, the output
closes. When the current is reduced to 95% of the actuate
current or less, the output opens.
Normally Closed: When the current through the toroid is equal
to or greater than the actuate current, the output opens. When
the current is reduced below 95% of the actuate current, the
output closes. To increase sensitivity, multiple turns may be
made through the TCS’s toroidal sensor. The trip point range is
divided by the number of turns through the toroidal sensor to
create a new range. When using an external CT, select a 2VA,
0-20A output CT rated for the current to be monitored. Select
TCS adjustment range 0. Pass one secondary wire lead through
the TCS’ toroid and connect the secondary leads together.
Features & Benefits
FEATURES BENEFITS
Self powered No control voltage is required to operate the unit
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Can connect directly
to PLC
Solid state output to sink or source current can
be connected directly to a standard PLC digital
input module
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions
Complete isolation
between sensed current
and control circuit
Allows you to monitor a load in a separate
lectrical system
Current Sensor
Wiring Diagram
Ordering Information
MODEL OUTPUT VOLTAGE ACTUATE CURRENT OUTPUT FORM MODEL OUTPUT VOLTAGE ACTUATE CURRENT OUTPUT FORM
TCSG2A 3 to 50VDC Fixed, 2A Normally open TCSH2B 24 to 240VAC Fixed, 2A Normally closed
TCSGAA 3 to 50VDC 2-20A adjustable Normally open TCSH5B 24 to 240VAC Fixed, 5A Normally closed
TCSGAB 3 to 50VDC 2-20A adjustable Normally closed TCSHAA 24 to 240VAC 2-20A adjustable Normally open
TCSH2A 24 to 240VAC Fixed, 2A Normally open TCSHAB 24 to 240VAC 2-20A adjustable Normally closed
If you don’t find the part you need, call us for a custom product 800-843-8848
Monitored AC conductor
must be insulated.
L1
N/L2
L1
N/L2
L1
N/L2
L = Load
V = Voltage
PS = Power Supply
PLC = PLC Digital Input Module
POSITIVE SWITCHING
SINKING
SOURCING
NEGATIVE SWITCHING
L1
N/L2
Littelfuse.com/tcs
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 35.
198 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/tcs
TCS SERIES
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Function Diagram
Specifications
Sensor
Type Toroid, through hole wiring, alternating current,
monitored wire must be properly insulated
Current to Actuate Adjustable: - 2 - 20A, guaranteed range
Fixed: - 2 - 45A, +0/-20%
Reset Current ≅ 95% of the actuate current
Maximum Allowable Current Steady - 50A turns
Inrush - 300A turns for 10s
Actuate Current vs. Temp.
& Voltage ≤ ±5%
Response Times Overcurrent - ≤ 200ms
Undercurrent - ≤ 1s
Burden < 0.5VA
Output
Type Solid state
Form NO or NC
Rating 1A steady, 10A inrush
Voltage AC - 24 to 240VAC +10/-20%
DC - 3 to 50VDC
Voltage Drop AC NO & NC - ≅ 2.5V
DC NO & NC - ≅ 1.2V
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 44.5 mm (1.75”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals (2)
Sensor Hole 0.36 in. (9.14 mm) for up to #4 AWG
(21.1 mm2) THHN wire
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
TP = Trip Point
OC = Monitored Current
NO = Normally Open Output
NC = Normally Closed Output
R = Reset
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 199
Protection Relays
Current Monitoring Relays and Transducers
TCSA SERIES
Description
The TCSA Series is a loop-powered, linear output current
transducer that provides an output that is directly proportional
to the RMS AC current passing through the onboard toroid. The
TCSA provides a 4 - 20mA output over a power supply range of
10 - 30VDC. Each unit is factory calibrated for monitoring in one
of four ranges; 0-5, 0-10, 0-20, or 0-50A. The 0 - 5A range allows
the use of external current transformers so loads up to 1200AC
amps can be monitored.
Operation
The TCSA varies the effective resistance of its output in direct
proportion to the current flowing in the monitored conductor.
The unit is factory calibrated so that 0 amps provides a 4mA
output and full span provides a 20mA output. Zero and span
adjustments are provided for minor calibration adjustments in
the field (if required).
Using an External Current Transformer (CT)
Select a 2VA, 0 to 5A output CT, rated for the current to be
monitored. Select TCSA5. Pass one of the CT’s secondary wire
leads through the TCSA’s toroid. Connect the CT’s secondary
leads together.
1
2
4
10
20
18
16
14
12
10
8
6
4
2
4
8
20
3
6
12
30
4
8
16
40
5
10
20
50
0
Features
J Monitors 0 - 50A in 4 ranges
J Loop powered from 10 to 30VDC
J Linear output from 4 - 20mA
J Zero & span adjustments
J Complete isolation between sensed current & control circuit
Wiring Diagram
Current Transducers
PS
PS = Power Supply
Z = Zero Adjust
S = Span Adjust
W = Insulated Wire Carrying
Monitored Current
PLC = PLC Analog Input
or Meter Input
Ordering Information
MODEL CURRENT RANGE
TCSA5 0-5A
TCSA10 0-10A
TCSA20 0-20A
TCSA50 0-50A
If you don’t find the part you need, call us for a custom product 800-843-8848
Littelfuse.com/tcsa
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 35.
200 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/tcsa
TCSA SERIES
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Specifications
Sensor
Type Toroid, through hole wiring, alternating current,
monitored conductor must be properly insulated
Monitored AC Current 0 - 50A
Ranges
4 Factory Calibrated Ranges 0 - 5A, 0 - 10A, 0 - 20A, or 0 - 50A
Factory Calibration ≤±2% of full scale
Maximum Allowable Current Steady – 50A turns;
Inrush – 300A turns for 10s
Repeat Accuracy ≤±0.25% of full scale under fixed conditions
Response Time ≅ 300ms
Burden ≤ 0.5VA
AC Line Frequency
0 - 20A / 21 - 50A 20 - 100Hz / 30 - 100Hz
Temperature Coefficient ±0.05%/°C
Output
Type: Series Connection Current directly proportional to
monitored current
Range 4 - 20mA
Sensor Supply Voltage* 10 to 30VDC
Momentary Voltage 40VDC for 1m
Zero Adjust ≅ 3.75 - 4.25mA
Span Adjust 18mA - 22mA
Adjustment Mini-screw, 25-turn potentiometer
Protection
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity Units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 44.5 mm (1.75”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Sensor Hole 0.36 in. (9.14 mm) for up to #4 AWG (21.1 mm2
)
THHN wire
Environmental
Operating/Storage
Temperature -30° to 60°C/-40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
*Minimum loop-power supply voltage equals the minimum sensor voltage 10VDC plus the
voltage drop developed across all the other loop devices at 20mA.
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 201
Protection Relays
Current Monitoring Relays and Transducers
Current measuring
device
Voltage measuring
device
LCSC10T12
Current Sensor
Connection for
4-20mA Loop
To LCSC10T12
Current Sensor Jumper used when
current source is not
LCSC10T12
Connection for
Analog Voltage Output
Connect One:
VDA = 1 to 5VDC
VDB = 2 to 10VDC
C
D
A
B
249Ω
249Ω
DCSA
AD = Instrument, meter or PLC input
PS = Power Supply
LCSC10T12
Current Sensor
Connect One:
A = 1 to 5VDC
B = 2 to 10VDC
DCSA50
AD = Instrument, Meter,
or PLC Input
PS = Power Supply
DCSA SERIES
Description
The DCSA Series is a loop-powered, linear output current
transducer that provides an output that is directly proportional to
the RMS AC current passing through the LCSC10T12 sensor. The
DCSA Series provides either an analog current or voltage: 4-20
mA, 1 to 5VDC, or 2 to 10VDC. Each unit is factory calibrated
for monitoring (with the LCSC10T12 connected) in one of four
ranges; 0-5, 0-10, 0-20, or 0-50A. Zero and span adjustments
allow field calibration if needed. The DCSA Series mounts on
both DIN 1 and DIN 3 rails.
Operation
The DCSA Series varies the effective resistance of its output
in direct proportion to the current flowing in the conductor
monitored by the LCSC10T12. Connecting the power supply to
terminals C & D provides a 4 to 20mA DC current. Connect the
power supply to terminals C & A to get 1 to 5VDC at terminal D.
Connect the power supply to terminals C & B to get 2 to 10VDC
at terminal D.
Features
J Mounts on DIN 1 or DIN 3 rail
J 0-50A in 4 ranges using LCSC10T12 sensor
J Loop powered from 10 to 30VDC
J Linear output from 4-20mA, 1-10VDC
J Zero & span adjustments
J Separate sensor & control unit
Accessories
LCSC10T12 Toroidal Current Sensor
Remote monitoring of currents up to 50A.
Wiring Diagram
Current Transducers
CONNECTION FOR 4 - 20 MA LOOP
To LCSC10T12 Current Sensor
Current measuring
device
Voltage measuring
device
LCSC10T12
Current Sensor
Connection for
4-20mA Loop
To LCSC10T12
Current Sensor Jumper used when
current source is not
LCSC10T12
Connection for
Analog Voltage Output
Connect One:
VDA = 1 to 5VDC
VDB = 2 to 10VDC
C
D
A
B
249Ω
249Ω
DCSA
AD = Instrument, meter or PLC input
PS = Power Supply
Connect One:
A = 1 to 5VDC
B = 2 to 10VDC
Jumper used when current
source is not LCSC10T12
CONNECTION FOR ANALOG
VOLTAGE OUTPUT
DCSA50
AD = Instrument, Meter,
or PLC Input
PS = Power Supply
Ordering Information
MODEL CURRENT RANGE WITH
LCSC10T12 INPUT RANGE (F TO E)
DCSA5 0-5A 0-5mA AC
DCSA20 0-20A 0-20mA AC
DCSA50 0-50A 0-50mA AC
If you don’t find the part you need, call us for a custom product 800-843-8848
Littelfuse.com/dcsa
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 36.
202 © 2022 Littelfuse, Inc.
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/dcsa
DCSA SERIES
Specifications
Input
Ranges (without
LCSC10T12 connected)
4 factory calibrated ranges
in mA AC 0 - 5mA, 0 - 10mA, 0 - 20mA, or 0 - 50mA AC
Factory calibration ±0.5% of full scale
Repeat Accuracy ±0.25% of full scale under fixed conditions
Response Time ≅ 300ms
Temperature Coefficient ±0.05%/°C
Input to Output Not isolated
Output
Type
Analog Current directly proportional to input current
Range 4 - 20mA, or 1 to 5VDC or 2 to 10VDC
Supply Voltage* 10 to 30VDC
Momentary Voltage 40VDC for 1m
Zero Adjust ≅ 3.75 - 4.25mA
Span Adjust 18mA - 22mA
Adjustment Mini-screw, multi-turn potentiometer
Protection
Dielectric Breakdown ≥ 2500V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity Units are reverse polarity protected
Mechanical
Mounting DIN 1 & DIN 3 rail mounting
Termination
Wire clamp For 22 - 14AWG (.336 mm2
... 2.5 mm2
)
Environmental
Operating/Storage
Temperature -30° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 1.6 oz (45.4 g)
Accessory - LCSC10T12 Toroidal Sensor
Number of Turns 1000
Nominal Output Current
Full Range 0 - 50 mA
Maximum Allowable Current Steady 50A turns; Inrush 300A turns for 10s
Burden ≤ 0.5 VA
Frequency
0 - 20A / 21 - 50A 20/100 Hz / 30/100 Hz
Sensor Hole 0.36 in. (9.14 mm) for up to #4 AWG
(21.1 mm2
) THHN wire
Weight ≅ 1 oz (28.3 g)
*Minimum loop-power supply voltage equals the minimum sensor voltage 10VDC plus the
voltage drop developed across all the other loop devices at 20mA.
Monitored Current Amps Diagram
mA 4 12 20
A
50, 20, 10, 5
25, 10, 5, 2.5
0
Monitored
Current
Amps
2
1
6
3
10
5 VDC
Output
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 203
Protection Relays
Current Monitoring Relays and Transducers
Littelfuse.com/lcs-lpm
LCS10T12 / LPM SERIES
Description
The LCS10T12 connected to the LPM12 or LPMG12 indicator
is a low cost, easy to use, go/no-go indication system for the
remote monitoring of current flow. The LCS10T12 is installed
on an adequately insulated wire of the monitored load. Its 12in.
(30.4cm) leads are connected to the LPM12 or LPMG12 panel
mount indicator directly or via customer supplied wires up to 500
feet (152.4m) long.
Operation
When the monitored current is 5A turns, the panel mount LPM
indicator will glow. The LCS10T12 is designed to maximize the
light output of the panel mount indicator. It can be used to
monitor current flow of less than 5A by passing the monitored
conductor 2 or more times through the sensor.
CAUTION: The LCS10T12 must be connected to the LPM12
or LPMG12 before current flows to prevent damage or a shock
hazard. Monitored wires must be properly insulated.
Panel mount indicator designed to match the output of the
LCS10T12. The LPM12 and LPMG12 come with 12 in. (30.4 cm)
wires and a one piece mounting clip. Both devices install quickly
in a 0.25 in. (6.35 mm) hole in panels from 0.031 - 0.062 in.
(0.79 - 1.6 mm) thick.
Features
J Low cost go/no go indication
J May be connected to wires up to 500 feet (152.4 m) long
J Remote monitoring of currents up to 50A
J Green or red LED indicator available
Specifications
Monitored Current
Current Range 2 - 50A AC
Wire Passes Min. Current Max. Current Max. Inrush Max. Wire Dia.
1 5A 50A 120A 0.355 in. (9.0 mm)
2 2.5A 25A 60A 0.187 in. (4.7 mm)
3 1.7A 16.6A 40A 0.15 in. (3.8 mm)
4 1.3A 12.5A 30A 0.125 in. (3.2 mm)
5 5/X 50/X 120/X
Maximum Current 50A turns continuous
AC Line Frequency 50/60Hz
DC Resistance of
Current Limiter 65 Ω
Mechanical
Sensor Hole 0.36 in. (9.14 mm) for up to #4 AWG (21.1 mm2
)
THHN wire
Termination 12 in. (30.4 cm) wire leads
Environmental
Operating/Storage
Temperature -40° to 60°C/-40° to 85°C
Weight LCS: ≅ 0.8 oz (23 g)
LPM: ≅ 0.2 oz (6 g)
Wiring Diagram
Current Indicators
Wire Length: 500 ft.
(152.4m) max.
(Customer Supplied)
CAUTION: The LCS10T12 must
be connected to the LPM12 or
LPMG12 before current flows
to prevent damage or shock
hazard. Monitored wires must
be properly insulated.
Ordering Information
MODEL DESCRIPTION
LCS10T12 AC Current Sensor
LPM12 Red LED Indicator
LPMG12 Green LED Indicator
If you don’t find the part you need, call us for a custom product 800-843-8848
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 37 and 38.
204 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/50r
Description
The 50R Series single-phase voltage monitor has a voltagesensing circuit which constantly monitors the single-phase
power for a low voltage condition. Single-phase motors on fans,
compressors, air conditioners, heat pumps, well pumps, sump
pumps and small conveyor motors are all applicable to the
50R Series.
When a harmful condition is detected, the MotorSaver’s output
relay is deactivated after a specified trip delay. The output relay
reactivates after power line conditions return to an acceptable
level and a specified amount of time has elapsed (restart
delay). The trip delay prevents nuisance tripping due to rapidly
fluctuating power line conditions.
Features & Benefits
FEATURES BENEFITS
Proprietary voltage
sensing circuitry
Constant monitoring of single-phase power for a
low voltage condition
Adjustable trip delay
(-3 models) and restart
delay (-2 models) settings
Prevent nuisance tripping due to rapidly fluctuating
power line conditions and allows staggered start up
of multiple motors, after a fault, to prevent a low
voltage condition
High voltage detection
(-9 models)
Trips and resets at a fixed percentage of the
setpoint: trip 110%, reset 107%.
600V rated relay
contacts available
on some models
Eliminates the need for a control transformer to step
voltage down to 120 - 240V for a control circuit
Single-Phase Voltage Monitor
50R SERIES
Wiring Diagram
50R
Ordering Information
MODEL LINE VOTAGE DESCRIPTION
50R-100 95-120VAC Fixed trip and restart delay
50R-100-2 95-120VAC Fixed trip and variable restart delay (manual, 2-300s)
50R200 190-240VAC Fixed trip and restart delay
50R2002 190-240VAC Fixed trip and variable restart delay (manual, 2-300s)
50R2003 190-240VAC Fixed restart and variable trip delay (2-30s)
50R20029 190-240VAC Fixed trip and variable restart delay (manual, 2-300s) plus high voltage detection
50R400 380-480VAC Fixed trip and restart delay
50R4002 380-480VAC Fixed trip and variable restart delay (manual, 2-300s)
50R4003 380-480VAC Fixed restart and variable trip delay (2-30s)
50R40029 380-480VAC Fixed trip and variable restart delay (manual, 2-300s) plus high voltage detection
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix page 509, Figure 6.
© 2022 Littelfuse, Inc. 205
Protection Relays
Voltage Monitoring Relays
Specifications
Input Characteristics
Line Voltage
50R-100 95-120VAC
50R200 190-240VAC
50R400 380-480VAC
Frequency 50*/60Hz
Functional Characteristics
Low Voltage:
Trip (% of setpoint) 90%
Reset (% of setpoint) 93%
Delay Time (Nominal)
Trip 4 seconds
Restart (low voltage) 2 seconds
Restart (complete power loss) 2 seconds
Output Characteristics
Output Contact Rating
(SPDT - 1 Form C)
50R-100, 50R200
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
50R400
Pilot Duty 470VA @ 600VAC
General Characteristics
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 5 W
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal
Torque 7 in.-lbs.
Wire Size 12-18AWG
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
and controls
Transient Protection
(Internal) IEC 61000-4-5; 1995 ±6kV
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947-6-2
Dimensions H 74.4 mm (2.93”); W 133.9 mm (5.27”);
D 74.9 mm (2.95”)
Weight 0.98 lb. (15.68 oz., 444.52 g)
Mounting Method #8 screws
50R SERIES
Special Options
Opt. 2: Variable Restart Delay Manual, 2-300 seconds
Opt. 3: Variable Trip Delay 2-30 seconds
Opt. 9: High Voltage
Detection Operating Points
Trip (% of Setpoint) 110%
Reset (% of Setpoint) 107%
*Note: 50Hz will increase all delay timers by 20%
Littelfuse.com/50r
AC SYSTEM MONITORS/LOAD SENSORS
9
206 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/201xxxsp
Description
The 201-xxx-SP Series is an 8-pin octal-base, plug-in voltage
monitor designed to protect single-phase motors regardless of
size. The 201-100-SP is used on 95-120VAC, 50/60Hz motors to
prevent damage caused by low voltage. The 201-200-SP is used
on 190-240VAC, 50/60Hz motors. The 201-200-SP-T-9 is a pin-forpin replacement for a Time Mark® #260 Series voltage monitor.
High voltage protection is included in the 201-200-SP-T-9.
The unique microcontroller-based voltage and voltage-sensing
circuit constantly monitors the voltage to detect harmful power
line conditions. When a harmful condition is detected, the
MotorSaver’s output relay is deactivated after a specified trip
delay. The output relay reactivates after power line conditions
return to an acceptable level and a specified amount of time has
elapsed (restart delay). The trip delay prevents nuisance tripping
due to rapidly fluctuating power line conditions.
Must use Model OT08PC socket for UL Rating!
Note: Manufacturer’s recommended screw terminal torque for the RB Series and OT Series Octal
Sockets is 12 in.-lbs.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of voltage to detect harmful
power line conditions, even before the motor starts
Fixed trip delay 4s Prevents nuisance tripping due to rapidly fluctuating
power line conditions
Advanced LED indication Provides diagnostics which can be used for
troubleshooting and to determine relay status
Compact design for 8-pin;
DIN rail or surface mount Allows flexibility in panel installation
Accessories
OT08PC 8-pin Octal Socket
Octal Socket for plug-in units. 8-pin surface &
DIN rail mountable. Rated for 10A @ 600VAC.
Single-Phase Voltage/Phase Monitor
201-XXX-SP SERIES
Wiring Diagram
PIN-OUT 1 (201-XXX-SP)
(view of socket)
PIN-OUT 2 (201-200-SP-T-9)
(view of socket)
TYPICAL WIRING DIAGRAM FOR MODEL 201-SP
WITH MOTOR CONTROL
Ordering Information
MODEL LINE VOTAGE DESCRIPTION
201-100-SP 95-120VAC SPDT, protects single phase motors
201-200-SP 190-240VAC SPDT, protects single phase motors
201-200-SP-T-9 190-240VAC SPDT, direct replacement for
Time Mark® #260 series
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 509, Figure 8.
© 2022 Littelfuse, Inc. 207
Protection Relays
Voltage Monitoring Relays
Specifications
Input Characteristics
Line Voltage:
201-100-SP 95-120VAC
201-200-SP, 201-200-SP-T-9 190-240VAC
Frequency 50/60Hz
Functional Characteristics
Low Voltage (% of setpoint)
Trip 90%
Reset 93%
For 201-200-SP-T-9 only:
High Voltage (% of setpoint)
Trip 110%
Reset 107%
Trip Delay Time:
High/Low Voltage Fault 4 seconds
Restart Delay Time:
After a Fault 2 seconds
After a Complete Power Loss 2 seconds
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
201-XXX-SP SERIES
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 5 W
Transient Protection (Internal) 2500V for 10 ms
Safety Marks
UL (OT08PC octal
socket required) UL508 (File #E68520)
CE IEC 60947-6-2
Dimensions H 44.45 mm (1.75”); W 60.325 mm (2.375”);
D 104.775 mm (4.125”) (with socket)
Weight 0.8 lb. (12.8 oz., 362.87 g)
Mounting Method DIN rail or surface mount
(plug in to OT08PC socket)
Socket Available Model OT08PC (UL Rating 600V)
The 600V socket can be surface mounted or installed on DIN Rail.
Littelfuse.com/201xxxsp
AC SYSTEM MONITORS/LOAD SENSORS
9
208 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/201xxxspdpdt
Description
The 201-xxx-SP-DPDT Series is an 8-pin octal-base, plug-in
voltage monitor designed to protect single-phase motors
regardless of size. The 201-100-SP-DPDT is used on 95-120VAC,
50/60Hz motors to prevent damage caused by low voltage. The
201-200-SP-DPDT is used on 190-240VAC, 50/60Hz motors. The
units feature two isolated sets of contacts that are ideal for use
with two control circuits with different voltages.
The unique microcontroller-based voltage and voltage-sensing
circuit constantly monitors the voltage to detect harmful power
line conditions. When a harmful condition is detected, the
MotorSaver’s output relays are deactivated after a specified trip
delay. The output relays reactivate after power line conditions
return to an acceptable level and a specified amount of time has
elapsed (restart delay). The trip delay prevents nuisance tripping
due to rapidly fluctuating power line conditions.
Must use Model OT08PC socket for UL Rating!
Note: Manufacturer’s recommended screw terminal torque for the RB Series and OT Series Octal
Sockets is 12 in.-lbs.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of voltage to detect harmful
power line conditions, even before the motor starts
Fixed trip delay 4s Prevents nuisance tripping due to rapidly fluctuating
power line conditions
Advanced LED indication Provides diagnostics which can be used for
troubleshooting and to determine relay status
Compact design for 8-pin;
DIN rail or surface mount Allows flexibility in panel installation
Accessories
OT08PC 8-pin Octal Socket
Octal Socket for plug-in units. 8-pin surface &
DIN rail mountable. Rated for 10A @ 600VAC.
Single-Phase Voltage/Phase Monitor
201-XXX-SP-DPDT SERIES
Wiring Diagram
Ordering Information
MODEL INPUT
VOTAGE DESCRIPTION
201-100-SP-DPDT 95-120VAC Two isolated Form C relays
201-200-SP-DPDT 190-240VAC Two isolated Form C relays
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 509, Figure 8.
© 2022 Littelfuse, Inc. 209
Protection Relays
Voltage Monitoring Relays
Specifications
Input Characteristics
Line Voltage:
201-100-SP-DPDT 95-120VAC
201-200-SP-DPDT 190-240VAC
Frequency 50/60Hz
Functional Characteristics
Low Voltage (% of setpoint):
Trip 90% +/-1%
Reset 93% +/-1%
Trip Delay Times:
Low Voltage 4 seconds
Restart Delay Times:
After a Fault or Complete
Power Loss 2 seconds
Output Characteristics
Output Contact Rating (DPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
General Characteristics
Ambient Temperature Range:
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 5 W
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
201-XXX-SP-DPDT SERIES
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity,
Radiated 150MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
and controls
Safety Marks
UL (OT08PC octal
socket required) UL508 (File #E68520)
CE IEC 60947-6-2
Dimensions H 44.45 mm (1.75”); W 60.325 mm (2.375”);
D 104.775 mm (4.125”) (with socket)
Weight 0.65 lb. (10.4 oz., 294.84 g)
Mounting Method DIN rail or surface mount
(plug in to OT08PC socket)
Socket Available Model OT08PC (UL Rating 600V)
The 600V socket can be surface mounted or installed on DIN Rail
Littelfuse.com/201xxxspdpdt
AC SYSTEM MONITORS/LOAD SENSORS
9
210 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/202200sp
Description
The 202-200-SP Series voltage monitor is designed to protect
single-phase motors regardless of size. It can be used with
190V-240VAC, 50/60Hz motors to prevent damage caused by
incoming power problems.
A unique microcontroller-based voltage-sensing circuit
constantly monitors the voltage to detect harmful power
line conditions. When a harmful condition is detected, the
MotorSaver’s output relay is deactivated after a specified trip
delay. The output relay reactivates after power line conditions
return to an acceptable level and a specified amount of time has
elapsed (restart delay). The trip delay prevents nuisance tripping
due to rapidly fluctuating power line conditions.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of voltage to detect harmful
power line conditions, even before a motor starts
Fixed trip delay 4s Prevents nuisance tripping due to rapidly fluctuating
power line conditions
Adjustable restart delay
(Manual, 2-300s)
Allows staggered start up of multiple motors, after
a fault, to prevent a low voltage condition
Advanced LED indication Provides diagnostics which can be used for
troubleshooting and to determine relay status
One screw mounting
and standard 1/4” quick
connect terminals
Fast installation and compact size perfect for
panel assembly or OEM applications
Single-Phase Voltage Monitor
202-200-SP SERIES
Wiring Diagram
TYPICAL WIRING DIAGRAM FOR MODEL 202-200-SP
WITH MOTOR CONTROL
TYPICAL WIRING DIAGRAM FOR MODEL 202-200-SP
WITH ALARM CONTROL
Ordering Information
MODEL LINE VOTAGE DESCRIPTION
202-200-SP 190-240VAC SPDT, high and low voltage protection
202-200-SP-NHV 190-240VAC SPDT, low voltage protection only
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 509, Figure 7.
© 2022 Littelfuse, Inc. 211
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/202200sp
Specifications
Input Characteristics
Line Voltage:
202-200-SP, 202-200-SP-NHV 190-240VAC
Frequency 50*/60Hz
Functional Characteristics
Low Voltage (% of setpoint)
Trip 90%
Reset 93%
High Voltage (% of setpoint)
(not available on -NHV model)
Trip 110%
Reset 107%
Trip Delay Time:
High and Low Voltage 4 seconds
Restart Delay Time:
After a Fault or Complete
Power Loss Manual, 2-300 seconds adj.
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
202-200-SP SERIES
General Characteristics
Temperature Range -40° to 70°C (-40° to 158°F)
Trip & Reset Accuracy ±1%
Repeatability ±0.5%
Input to Output Dielectric 1480 Vrms (min.)
Termination 0.25” male quick connect
Maximum Input Power 5 W
Relative Humidity 95%, non-condensing
Transient Protection IEC 61000-4-5, ±4kV
Safety Marks
UL, UL Recognized UL508 (File #E68520)
Dimensions H 63.5 mm (2.5”); W 63.5 mm (2.5”);
D 35.56 mm (1.4”)
Weight 0.5 lb. (8 oz., 226.8 g)
Mounting Method 1/4” socket head cap screw
(customer supplied)
*Note: 50Hz will increase all delay timers by 20%.
AC SYSTEM MONITORS/LOAD SENSORS
9
212 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/460xxxsp
Description
The 460-100-SP is used on 95-120VAC, 50*/60Hz single-phase
motors and the 460-200-SP is used on 190-240VAC, 50*/60Hz
single-phase motors to protect them from damaging high and
low voltage conditions. An adjustment knob allows the user to
set a 1-500 second restart delay. The variable restart delay is also
a power-up delay and can be utilized to stagger-start motors on
the same system.
A unique microcontroller-based, voltage-sensing circuit
constantly monitors the voltage to detect harmful power
line conditions. When a harmful condition is detected, the
MotorSaver’s output relay is deactivated after a specified trip
delay. The output relay reactivates after power line conditions
return to an acceptable level and a specified amount of time has
elapsed (restart delay). The trip delay prevents nuisance tripping
due to rapidly fluctuating power line conditions.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of voltage to detect harmful
power line conditions, even before a motor starts
Fixed trip delay 4s Prevents nuisance tripping due to rapidly fluctuating
power line conditions
Adjustable restart
delay (1-500s)
Allows staggered start up of multiple motors on the
same system to prevent a low voltage condition
Advanced LED indication Provides diagnostics which can be used for
troubleshooting and to determine relay status
DIN rail or surface
mountable Allows flexibility for panel assembly
Single-Phase Voltage Monitor
460-XXX-SP SERIES
Wiring Diagram
Ordering Information
MODEL LINE VOTAGE
460-100-SP 95-120VAC
460-200-SP 190-240VAC
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 510, Figure 10.
© 2022 Littelfuse, Inc. 213
Protection Relays
Voltage Monitoring Relays
Specifications
Input Characteristics
Line Voltage
460-100-SP 95-120VAC
460-200-SP 190-240VAC
Frequency 50*/60Hz
Functional Characteristics
Low Voltage (% of setpoint):
Trip 90% ±1%
Reset 93% ±1%
High Voltage (% of setpoint)
Trip 110% ±1%
Reset 107% ±1%
Trip Delay Time
Low or High Voltage 4 seconds fixed
Restart Delay Time
After a Fault 1-500 seconds adjustable
After a Complete Power Loss 1-500 seconds adjustable
Output Characteristics
Output Contact Rating
(1 Form C)
Pilot Duty 480VA @ 240VAC, B300
General Purpose 10A @ 240VAC
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 6 W
Class of Protection IP20, NEMA 1 (finger safe)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 4.5 in.-lbs.
Wire Type Stranded or solid 12-20 AWG, one per terminal
460-XXX-SP SERIES
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity,
Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5 kV input power
and controls
Surge
IEC IEC 61000-4-5, Level 3, 4kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance to a
level of 6kV line-to-line
Hi-potential Test Meets UL508 (2 x rated V +1000V for 1 min)
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947-6-2
Enclosure Polycarbonate
Dimensions H 88.9 mm (3.5”); W 52.93 mm (2.084”);
D 59.69 mm (2.35”)
Weight 0.9 lb. (14.4 oz., 408.23 g)
Mounting Method 35mm DIN rail or Surface Mount
(#6 or #8 screws)
*Note: 50 Hz will increase all delay timers by 20%
Littelfuse.com/460xxxsp
AC SYSTEM MONITORS/LOAD SENSORS
9
214 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/102a
Description
The 102A is a 3-phase, auto-ranging, dual-range voltage monitor
that protects 190-480VAC, 50/60Hz motors regardless of size.
The product provides a user selectable nominal voltage setpoint
and the voltage monitor automatically selects between the 200V
and 400V range.
A unique microcontroller-based voltage and phase-sensing
circuit constantly monitors the 3-phase voltages to detect
harmful power line conditions. When a harmful condition is
detected, the output relay is deactivated after a specified trip
delay. The output relay reactivates after power line conditions
return to acceptable levels. The Model 102A includes advanced
single LED diagnostics. Five different light patterns
distinguish between faults and normal conditions.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of single-phase, low voltage,
high voltage (102A-9), voltage unbalance, phase
reversal, harmful power line conditions.
Auto-sensing wide
voltage range
Automatically senses system voltage between
190 - 480VAC. Saves setup time.
Advanced LED
diagnostics
Quick visual indicator for cause of trip. LED
indications include: normal operation, power-up
restart delay, reverse-phase trip, unbalance/
single-phase trip, high or low voltage trip
Adjustable trip delay
(102A2)
Prevent nuisance tripping due to rapidly fluctuating
power line conditions.
Ordering Information
MODEL LINE
VOLTAGE DESCRIPTION
102A 190-480VAC Fixed low voltage trip delay (4 sec), fixed
restart delay (2 sec)
102A2 190-480VAC Has variable restart delay (manual or
adjustable 2-300 seconds)
102A3 190-480VAC
Has adjustable trip delay at 2-30 seconds
(unbalance and phasing trip delays remain at
2 seconds).
102A-9 190-480VAC
Has high voltage protection. High Voltage
Trip is 110% of setpoint, Reset is 107%
of setpoint.
102600 475-600VAC Fixed low voltage trip delay (4 sec), fixed
restart delay (2 sec)
3-Phase Voltage/Phase Monitor
102A SERIES
Wiring Diagram
102 WITH MOTOR CONTROL
102 WITH ALARM CONTROL
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix page 509, Figure 6.
© 2022 Littelfuse, Inc. 215
Protection Relays
Voltage Monitoring Relays
Specifications
Frequency 50*/60Hz
Functional Characteristics
Low Voltage (% of setpoint)
Trip 90%
Reset 93%
Voltage Unbalance (NEMA)
Trip 6%
Reset 4.5%
Trip Delay Time
Low/High Voltage 4 seconds (standard)
Unbalance & Phasing Faults 2 seconds
Restart Delay Time
After a Fault 2 seconds (standard)
After a Complete Power Loss 2 seconds (standard)
Output Characteristics
Output Contact Rating
(SPDT - 1 Form C)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
102A SERIES
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Trip & Reset Accuracy ±1%
Maximum Input Power 5 W
Terminal
Torque 7 in.-lbs.
Wire Size 12-18AWG
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input,
2kV input/output
Transient Protection (Internal) IEC 61000-4-5; 1995 ±6kV
Safety Marks
UL UL508 (File #E68520)
CSA 22.2 No. 14 (File #46510)
CE IEC 60947-6-2
Dimensions H 74.4 mm (2.93”); W 133.9 mm (5.27”);
D 74.9 mm (2.95”)
Weight 1.05 lbs. (16.8 oz., 476.27 g)
Mounting Method #8 screws
*Note: 50Hz will increase all delay timers by 20%.
Littelfuse.com/102a
AC SYSTEM MONITORS/LOAD SENSORS
9
216 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/201a
Description
The 201A is a 3-phase, auto-ranging, dual-range voltage monitor
that protects 190-480VAC, 50/60Hz motors regardless of size.
The product provides a user selectable nominal voltage setpoint
and the voltage monitor automatically selects between the
200V and 400V range. The 201A includes advanced single LED
diagnostics, where color and light patterns distinguish between
faults and normal conditions.
This unique microcontroller-based voltage and phase-sensing
device constantly monitors the 3-phase voltages to detect
harmful power line conditions. When a harmful condition is
detected, the 201A’s output relay is deactivated after a specified
trip delay. The output relay reactivates after power line conditions
return to acceptable levels for a specified restart delay time.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of single-phase, low voltage,
voltage unbalance, phase reversal, harmful power
line conditions. High voltage monitoring optional.
Compact design for 8-pin;
DIN rail or surface mount Allows flexiblility in panel installation
Auto-sensing wide
voltage range
Automatically senses system voltage between
190 - 480VAC. Saves setup time.
Advanced LED
diagnostics
Quick visual indicator for cause of trip. LED
indications include: normal operation, power-up
restart delay, reverse-phase trip, unbalance/
single-phase trip, high/low voltage trip
Accessories
OT08PC Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated at
10A @ 600VAC. Surface mounted with two #6
screws or snaps onto a 35 mm DIN rail.
3-Phase Voltage/Phase Monitor
201A SERIES
Wiring Diagram
201A WITH MOTOR CONTROL
201A WITH ALARM CONTROL
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION
201A 190-480VAC DIN rail or surface mountable
201A-9 190-480VAC Includes high voltage detection. DIN rail or
surface mountable
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 509, Figure 8.
© 2022 Littelfuse, Inc. 217
Protection Relays
Voltage Monitoring Relays
Specifications
Frequency 50/60Hz
Functional Characteristics
Low Voltage (% of setpoint)
Trip 90% ±1%
Reset 93% ±1%
Voltage Unbalance (NEMA)
Trip 6%
Reset 4.5%
Optional High Voltage
(% of setpoint)
Trip 110% ±1%
Reset 107% ±1%
Trip Delay Time
High/Low Voltage Fault 4 seconds
Unbalance & Phasing Faults 2 seconds
Restart Delay Time
After a Fault 2 seconds
After a Complete Power Loss 2 seconds
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
General Characteristics
Temperature Range -20° to 70°C (-4° to 158°F)
Trip & Reset Accuracy ±1%
Maximum Input Power 5 W
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 12 in.-lbs. (for OT08-PC socket)
Wire Gauge 12-22 AWG solid or stranded
Transient Protection
(Internal) 2500V for 10 ms
201A SERIES
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity
(RFI), Radiated 150MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
& controls
Surge
Immunity IEC IEC 61000-4-5, Level 3, 4kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance to
a level of 6kV line-to-line
Hi-potential Test Meets UL508 (2 x rated V + 1000V for 1 min.)
Safety Marks
UL (OT08PC octal
socket required) UL508 (File #E68520)
CE IEC 60947-6-2
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D (with socket) 104.78 mm (4.13”)
Weight 0.7 lbs. (11.2 oz., 317.51 g)
Mounting Method DIN rail or surface mount
(plug in to OT08PC socket)
Socket Available Model OT08PC (UL Rating 600V)
The 600V socket can be surface mounted or installed on DIN Rail.
Note: Manufacturer’s recommended screw terminal torque for the OT Series Octal Sockets is
12 in.-lbs.
Must use Model OT08PC socket for UL Rating!
Littelfuse.com/201a
AC SYSTEM MONITORS/LOAD SENSORS
9
218 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/201aau
Description
The 201A-AU is a 3-phase, auto-ranging, dual-range voltage
monitor that protects 190-480VAC, 50/60Hz motors regardless
of size. The product provides a user selectable nominal voltage
setpoint and the voltage monitor automatically selects between
the 200V and 400V range. Additional adjustment knobs allow
the user to set a 1-30 second trip delay, a manual restart or
1-500 second restart delay and a 2-8% voltage unbalance
trip point. The Model 201A-AU includes advanced single LED
diagnostics, where color and light patterns distinguish between
faults and normal conditions.
This unique microcontroller-based voltage and phase-sensing
device constantly monitors the 3-phase voltages to detect
harmful power line conditions. When a harmful condition is
detected, the 201A-AU’s output relay is deactivated after a
specified trip delay. The output relay reactivates after power line
conditions return to acceptable levels for a specified amount or
restart delay time (or manual reset).
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of loss of any phase, low
voltage, high voltage, voltage unbalance, phase
reversal, rapid cycling, harmful power line conditions
Compact design for 8-pin;
DIN rail or surface mount Allows flexiblility in panel installation
Auto-sensing wide
voltage range
Automatically senses system voltage between
190 - 480VAC. Saves setup time.
Advanced LED
diagnostics Quick visual indicator for cause of trip.
Adjustable voltage
unbalance trip setting
Allows compatibility with a variety of motors and
reduces nuisance tripping.
Adjustable trip & restart
delay settings
Prevent nuisance tripping due to rapidly fluctuating
power line conditions.
Accessories
OT08PC Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated at
10A @ 600VAC. Surface mounted with two #6
screws or snaps onto a 35 mm DIN rail.
Ordering Information
MODEL LINE
VOLTAGE DESCRIPTION
201A-AU 190-480VAC DIN rail or surface mountable
201575-AU 475-600VAC DIN rail or surface mountable
201A-AU-OT 190-480VAC Sold with OT08PC socket
201-575-AU-OT 475-600VAC Sold with OT08PC socket
3-Phase Voltage/Phase Monitor
201A-AU SERIES
Wiring Diagram
201A-AU WITH MOTOR CONTROL
201A-AU WITH ALARM CONTROL
L2
L1
L3
L2
L1
L3
LIGHT HORN
TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU
WITH MOTOR CONTROL
TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU
WITH ALARM CONTROL
L2
L1
L3
L2
L1
L3
LIGHT HORN
TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU
WITH MOTOR CONTROL
TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU
WITH ALARM CONTROL
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 509, Figure 8.
© 2022 Littelfuse, Inc. 219
Protection Relays
Voltage Monitoring Relays
Specifications
Frequency 50/60Hz
Functional Characteristics
Low Voltage (% of setpoint)
Trip 90% ±1%
Reset 93% ±1%
High Voltage (% of setpoint)
Trip 110% ±1%
Reset 107% ±1%
Voltage Unbalance (NEMA)
Trip 2-8% adjustable
Reset Trip Setting Minus 1% (5-8%)
Trip Setting Minus 0.5% (2-4%)
Trip Delay Time
High, Low and
Unbalanced Voltage 1-30 seconds adjustable
Single-Phasing Faults 1 second fixed
Restart Delay Time
After a Fault Manual, 1-500 seconds adj.
After a Complete
Power Loss Manual, 1-500 seconds adj.
Output Characteristics
Output Contact Rating
(1-Form C)
Pilot Duty 480VA @ 240VAC, B300
General Purpose 10A @ 240VAC
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Trip & Reset Accuracy ±1%
Maximum Input Power 5 W
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 12 in.-lbs. (for OT08-PC socket)
Wire Gauge 12-22 AWG solid or stranded
201A-AU SERIES
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity, Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
and controls
Surge
IEC IEC 61000-4-5, Level 3, 4kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance to
a level of 6kV line-to-line
Hi-potential Test Meets UL508 (2 x rated V +1000V for 1 min.)
Safety Marks
UL (OT08PC octal
socket required) UL508 (File #E68520)
CE IEC 60947-6-2
Enclosure Polycarbonate
Dimensions H 44.45 mm (1.75”); W 60.325 mm (2.375”);
D 104.775 mm (4.125”) (with socket)
Weight 0.7 lb. (11.2 oz., 317.51 g)
Mounting Method DIN rail or surface mount
(plug in to OT08PC socket)
Socket Available OT08PC (UL Rating 600V)
The 600V socket can be surface mounted or installed on DIN Rail.
Note: Manufacturer’s recommended screw terminal torque for the OT Series Octal Sockets is
12 in.-lbs.
Must use Model OT08PC socket for UL Rating!
Littelfuse.com/201aau
AC SYSTEM MONITORS/LOAD SENSORS
9
220 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/201xxxdpdt
Description
The 201-xxx-DPDT Series is an 11-pin octal base plug-in voltage
monitor designed to protect 3-phase motors regardless of size.
The 201-100-DPDT is used on 95-120VAC, 50/60Hz motors and
the 201-200-DPDT is used on 190-240VAC, 50/60Hz motors to
prevent damage caused by incoming voltage problems. The
units feature two isolated sets of contacts that are ideal for use
with two control circuits with different voltages.
The unique microcontroller-based voltage and phase-sensing
circuit constantly monitors the voltages to detect harmful
power line conditions When a harmful condition is detected, the
MotorSaver’s output relays are deactivated after a specified trip
delay. The output relays reactivate after power line conditions
return to an acceptable level and a specified amount of time has
elapsed (restart delay). The trip delay prevents nuisance tripping
due to rapidly fluctuating power line conditions.
This unit is also available with a shorter trip delay and faster
restart delay. The 201-xxx-DPDT-60mS has a trip delay of 0.5
seconds and a restart delay of 60 milliseconds.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constantly monitors 3 phase voltage to protect
against harmful line conditions, even before the
motor is started
Compact design for
11-pin; DIN rail or
surface mount
Allows flexibility in panel installation
Advanced LED indication Provides diagnostics which can be used for
troubleshooting and to determine relay status
Two isolated Form C
relays (DPDT)
Ideal for use in systems which have two control
circuits with different voltages
Accessories
OT11PC Octal Socket
11-pin surface & DIN rail mountable. Rated for
10A @ 300VAC
3-Phase Voltage/Phase Monitor
201-XXX-DPDT SERIES
Wiring Diagram
STOP
4 4
1
1
8 8
9
9
10
10
11
11
5 5
3
3
2
2
6
6 7 7
INPUT
POWER
L3 L2 L1
LIGHT
CONTROL
POWER
CONTROL
POWER
HORN
Ordering Information
MODEL LINE VOTAGE DESCRIPTION
201-100-DPDT 95-120VAC Fixed unbalance, trip delay 4s for low voltage fault
and 2s for unbalance and phase loss, restart delay 2s
201-200-DPDT 190-240VAC Fixed unbalance, trip delay 4s for low voltage fault
and 2s for unbalance and phase loss, restart delay 2s
201-100-DPDT-60mS 95-120VAC Fixed unbalance, trip delay 0.5s, restart delay 60mS
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 509, Figure 8.
© 2022 Littelfuse, Inc. 221
Protection Relays
Voltage Monitoring Relays
Specifications
Input Characteristics
Line Voltage
201-100-DPDT,
201-100-DPDT-60mS 95-120VAC
201-200-DPDT,
201-200-DPDT-60mS 190-240VAC
Frequency 50/60Hz
Functional Characteristics
Low Voltage (% of setpoint)
Trip 90% +/-1%
Reset 93% +/-1%
Voltage Unbalance
Trip 6%
Reset. 4.5%
Trip Delay Times
Low Voltage 4 seconds
Unbalance, Phasing Faults 2 seconds
Models with -60ms option 0.5 second
Restart Delay Times
After a Fault or Complete
Power Loss 2 seconds
Models with -60mS option 60 milliseconds
Output Characteristics
Output Contact Rating (DPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
201-XXX-DPDT SERIES
General Characteristics
Temperature Range -40° to 70°C (-40° to 158°F)
Maximum Input Power 5 W
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity, Radiated 150MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 2.5kV input power
Safety Marks
UL (OT11PC octal
socket required) UL508 (File #E68520)
CE IEC 60947-6-2
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D 104.78 mm (4.125”)
Weight 0.65 lb. (10.4 oz., 294.84 g)
Mounting Method DIN rail or surface mount (plug in to
OT11PC socket)
Socket Available Model OT11PC (UL Rated 300V)
The 300V socket can be surface mounted or installed on DIN Rail.
Must use Model OT11PC socket for UL Rating!
*Note: Manufacturer’s recommended screw terminal torque for the RB Series and OT Series
Octal Sockets is 12 in.-lbs.
Littelfuse.com/201xxxdpdt
AC SYSTEM MONITORS/LOAD SENSORS
9
222 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/202
Description
The 202 Series is a 3-phase, auto-ranging, dual-range voltage
monitor that protects 190-480VAC, 50*/60Hz motors regardless
of size. The 202-RP (and the 202-575-RP for 475-600VAC)
monitors the phase rotation of 3-phase systems and trips on
reverse-phase only. Critical applications include fan motors,
scroll compressors, grinders, conveyor systems, elevators and
escalators. Both products provide a user selectable nominal
voltage setpoint and automatically select between the 200V and
400V range.
This unique microcontroller-based voltage and phase-sensing
device constantly monitors the 3-phase voltages to detect
harmful power line conditions. When a harmful condition is
detected, the MotorSaver’s output relay is deactivated after a
specified trip delay. The output relay reactivates after power line
conditions return to acceptable levels for a specified amount of
restart delay time (or a manual reset). The 202 Series includes
advanced single LED diagnostics. Five different light patterns
distinguish between faults and normal conditions. The status
light turns green and the relay is activated when rotation is
correct.
Features & Benefits
FEATURES BENEFITS
Compact, quick
mounting design
1-screw mounting saves time and space. Small
footprint ideal for assembly into panels.
Proprietary
microcontroller
based circuitry
Constant monitoring of single-phase, low voltage,
high voltage, voltage unbalance, phase reversal,
harmful power line conditions.
Auto-sensing wide
voltage range
(202 & 202-RP
Automatically senses system voltage between
90 - 480VAC. Saves setup time.
Advanced LED
diagnostics
Quick visual indicator for cause of trip. LED
indications include: normal operation, restart delay,
reverse-phase trip, fault
Adjustable trip
delay (202)
Prevent nuisance tripping due to rapidly fluctuating
power line conditions.
Ordering Information
MODEL LINE
VOLTAGE DESCRIPTION
202 190-480VAC Standard protection with low/high voltage
trip, voltage unbalance
202-RP 190-480VAC Trips on reverse-phase only
202-575-RP 475-600VAC Designed for higher voltage systems and
trips on reverse-phase only
3-Phase Voltage/Phase Monitor
202 SERIES
Wiring Diagram
L1
L1
MOTOR
ALARM
ALARM
POWER
240 VAC
MAX.
INPUT POWER
L2
L2
L3
L3
NC
NO COM
202
OL OL OL
M M M
L1
L1
MOTOR
START
HAND
OFF
AUTO
CONTROL
VOLTAGE
STOP 240 VAC MAX.
INPUT POWER
L2
L2
L3
L3
NC
NO COM
202
OL OL OL
M M M OL
M
M
202 WITH ALARM CIRCUIT
202 WITH MOTOR CONTROL
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 509, Figure 7.
© 2022 Littelfuse, Inc. 223
Protection Relays
Voltage Monitoring Relays
Specifications
Frequency 50*/60Hz
Functional Characteristics
Phase Sequence ABC
Low Voltage (% of setpoint)
Trip 90%
Reset 93%
High Voltage (% of setpoint)
Trip 110%
Reset 107%
Voltage Unbalance (NEMA)
Trip 6%
Reset 4.5%
Trip Delay Time
High and Low Voltage 4 seconds
Unbalance & Phasing Faults 2 seconds
Restart Delay Time
After a Fault Manual, 2-300 seconds adj.
After a Complete Power Loss Manual, 2-300 seconds adj.
202 SERIES
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
General Characteristics
Temperature Range -40° to 70°C (-40° to 158°F)
Trip & Reset Accuracy ±1%
Repeatability ±0.5%
Maximum Input Power 5 W
Relative Humidity 95%, non-condensing
Transient Protection IEC 61000-4-5, ±4kV
Hi-potential Test Meets UL508
(2x rated V+1000V for 1 minute)
Termination 0.25” male quick connect
Safety Marks
UL Recognized UL508 (File #E68520)
Dimensions H 63.5 mm (2.5”); W 63.5 mm (2.5”);
D 35.56 mm (1.4”)
Weight 0.5 lb. (8 oz., 226.8 g)
Mounting Method 1/4” socket head cap screw
(customer supplied)
*Note: 50Hz will increase all delay timers by 20%. CE Pending
Littelfuse.com/202
AC SYSTEM MONITORS/LOAD SENSORS
9
224 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/250a
Description
The 250A is a 3-phase, auto-ranging, dual-range voltage monitor
that protects 190-480VAC, 50/60Hz motors regardless of size
from low and high voltage, unbalance/single-phase, and reversephase. The product provides a user selectable nominal voltage
setpoint and the voltage monitor automatically selects between
the 200V and 400V range. The 250A also features adjustable or
manual restart delay.
This unique microcontroller-based voltage and phase-sensing
device constantly monitors the 3-phase voltages to detect
harmful power line conditions. When a harmful condition is
detected, the output relay is deactivated after a specified trip
delay. The output relay reactivates after power line conditions
return to acceptable levels. The Model 250A includes advanced
single LED diagnostics. Five different light patterns distinguish
between faults and normal conditions.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring of single-phase, low voltage,
voltage unbalance, phase reversal, harmful power
line conditions.
Auto-sensing wide
voltage range
Automatically senses system voltage between
190 - 480VAC. Saves setup time.
Advanced LED
diagnostics
Quick visual indicator for cause of trip. LED
indications include: normal operation, power-up
restart delay, reverse-phase trip, unbalance/
single-phase trip, high or low voltage trip
DPDT relay output Allows for versitility to meet wide application needs
Manual Reset Allows for inspection of equipment before system is
re-energized
3-Phase Voltage/Phase Monitor
250A SERIES
Wiring Diagram
MODEL 250
Ordering Information
MODEL LINE
VOLTAGE
% OF SETPOINT
LOW DESCRIPTION
VOLTAGE
TRIP
LOW
VOLTAGE
RESET
HIGH
VOLTAGE
TRIP
HIGH
VOLTAGE
RESET
250A 190-480VAC 90% 93% 110% 107% Provides high and low voltage protection at fixed percentage of nominal voltage.
250600 475-600VAC 90% 93% 110% 107% Provides high and low voltage protection at fixed percentage of nominal voltage.
250A-MET 190-480VAC 85% 88% N/A N/A
Designed for use with Fire Control Panels. Has 2 Form C contacts that operate
independently. Left Form C energizes when voltage conditions are good and
de-energize when a fault condition is detected. Right Form C only energizes
during a reverse-phase condition. No high voltage protection.
250-100-MET 95-120VAC 85% 88% N/A N/A
Designed for use with Fire Control Panels. Has 2 Form C contacts that operate
independently. Left Form C energizes when voltage conditions are good and
de-energize when a fault condition is detected. Right Form C only energizes
during a reverse-phase condition. No high voltage protection.
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix page 509, Figure 6.
© 2022 Littelfuse, Inc. 225
Protection Relays
Voltage Monitoring Relays
Specifications
Frequency 50*/60Hz Low Voltage
Functional Characteristics
Voltage Unbalance (NEMA)
Trip 6%
Reset 4.5%
Trip Delay Time
Low Voltage, High Voltage 4 seconds
Unbalance, Phasing Faults 2 seconds
Restart Delay Time
After a Fault or Complete
Power Loss Manual, 2-300 seconds adj.
Output Characteristics
Output Contact Rating
(DPDT - 2 Form C)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
Temperature Range -40° to 70°C (-40° to 158°F)
Trip & Reset Accuracy ±1%
Maximum Input Power 5 W
Relative Humidity Up to 95% non-condensing per IEC 68-2-3
Terminal Torque 7 in.-lbs.
Wire Size 12-18AWG
Transient Protection
(Internal) IEC 61000-4-5;1995 ±6kV
Approvals
UL UL508 (File #E68520)
CSA CSA 22.2 No. 14 (File#46510)
CE CE IEC 60947-6-2
Dimensions H 74.4 mm (2.93”); W 133.9 mm (5.27”);
D 74.9 mm (2.95”)
Weight 1.02 lb. (16.32 oz., 462.66 g)
Mounting Method #8 screws
*Note: 50Hz will increase all delay timers by 20%.
250A SERIES
Littelfuse.com/250a
AC SYSTEM MONITORS/LOAD SENSORS
9
226 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/350
Description
The 350 Series is a heavy-duty voltage monitor. This product
should be used when high current relays or dual contacts are
required, or 480V controls are used. Since the 350 Series uses
heavy-duty relays, it comes in fixed voltage range models rather
than a dual auto-ranging version like the Model 250.
The 350200 has a 15A general purpose contact. The 350400
provides a SPDT (Form C) relay rated to switch up to 600V,
allowing the use of 480V controls, eliminating the need for a
control power transformer to step the voltage down to
120-240V. Several DPDT (two Form C contacts) relay models
are also available.
The 350 microcontroller-based family of products are low cost
yet highly advanced solutions to heavy-duty problems. The 350
includes advanced single LED diagnostics. Five different light
patterns distinguish faults and normal operating conditions.
Other options such as high voltage trip and adjustable restart
delay are available.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constantly monitors 3 phase voltage to protect
against harmful line conditions, even before the
motor is started
Advanced LED indication Provides diagnostics which can be used for
troubleshooting and to determine relay status
Adjustable restart delay
(-2 models) settings
Allows staggered start up of multiple motors, after
a fault, to prevent a low voltage condition
600V rated relay
contacts available
on some models
Eliminates the need for a control transformer to step
voltage down to 120 - 240V for a control circuit
3-Phase Voltage/Phase Monitor
350 SERIES
Wiring Diagram
Ordering Information
MODEL LINE VOTAGE DESCRIPTION MODEL LINE VOTAGE DESCRIPTION
350200 190-240VAC SPDT, fixed trip and restart delay 35040026 380-480VAC DPDT, 2 relays (1)10a. (1) 15A; fixed trip and
variable restart delay (manual, 2-300s)
3502002 190-240VAC SPDT, fixed trip and variable restart delay
(manual, 2-300s) 35040028** 380-480VAC DPDT, 2 relays 15A; variable restart delay
(no manual reset)
35020026 190-240VAC DPDT, 2 relays (1)10a. (1) 15A; fixed trip and
variable restart delay (manual, 2-300s) 35040029 380-480VAC SPDT, fixed trip and variable restart delay
(manual, 2-300s), plus high voltage detection
35020028** 190-240VAC DPDT, 2 relays 15A; variable restart delay
(no manual reset) 350600 475-600VAC SPDT, fixed trip and restart delay
35020029 190-240VAC SPDT, fixed trip and variable restart delay
(manual, 2-300s), plus high voltage detection 3506002 475-600VAC SPDT, fixed trip and restart delay
(manual, 2-300s)
350400 380-480VAC SPDT, fixed trip and restart delay 35060026 475-600VAC DPDT, 2 relays (1)10a. (1) 15A; fixed trip and
variable restart delay (manual, 2-300s)
3504002 380-480VAC SPDT, fixed trip and variable restart delay
(manual, 2-300s) 35060028** 475-600VAC DPDT, 2 relays 15A; variable restart delay
(no manual reset)
35040025 380-480VAC DPDT, fixed trip and variable restart delay
(manual, 2-300s) 35060029 475-600VAC SPDT, fixed trip and variable restart delay
(manual, 2-300s), plus high voltage detection
** These units are not equipped with Manual Reset.
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix page 509, Figure 6.
© 2022 Littelfuse, Inc. 227
Protection Relays
Voltage Monitoring Relays
Specifications
Input Characteristics
Line Voltage
350200 190-240VAC
350400 380-480VAC
350600 475-600VAC
Frequency 50*/60Hz
Functional Characteristics
Low Voltage (% of setpoint)
Trip 90%
Reset 93%
Voltage Unbalance (NEMA)
Trip 6%
Reset 4.5%
Trip Delay Time:
Low Voltage 4 seconds
Unbalance & Phasing Faults 2 seconds
Restart Delay Time
After a Fault 2 seconds
After a Complete Power Loss 2 seconds
Output Characteristics
Output Contact Rating
SPDT (350200)
Pilot Duty 480VA @ 240VAC
General Purpose 15A
SPDT (350-400, 350-600) 470VA @ 600VAC
DPDT (-6 Option) 1-10A General Purpose
480VA @ 240VAC Pilot Duty
1-15A General Purpose
480VA @ 240VAC Pilot Duty
1hp @ 240VAC
DPDT (-8 Option) 2-15A General Purpose
480VA @ 240VAC Pilot Duty
1hp @ 240VAC
350 SERIES
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Trip & Reset Accuracy ±1%
Maximum Input Power 5 W
Terminal
Torque 7 in.-lbs.
Wire Size 12-18AWG
Transient Protection
(Internal) IEC 61000-4-5;1995 ±6kV
Safety Marks
UL UL508 (File #E68520)
CSA 22.2 No. 14 (File #46510)
CE IEC 60947-6-2
Dimensions H 74.42 mm (2.93”); W 133.86 mm (5.27”);
D 74.93 mm (2.95”)
Weight 1.05 lbs. (16.8 oz., 476.27 g)
Mounting Method #8 screws
Special Options
Opt. 2: Variable Restart Delay Manual, 2-300 seconds adj.
Opt. 5: DPDT Relay
Opt. 6: 2 Relays (1) 10A, (1) 15A
Opt. 8: 2 Relays (2) 15A
Opt. 9: High Voltage (% of setpoint)
Trip 110%
Reset 107%
*Note: 50Hz will increase all delay timers by 20%.
Littelfuse.com/350
AC SYSTEM MONITORS/LOAD SENSORS
9
228 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/355
Description
The 355 Series is a 3-phase voltage monitor with adjustable
trip and restart delay, adjustable voltage unbalance and multiple
diagnostic lights. It is perfect for heavy-duty applications that
need both protection and simple user-friendly diagnostics.
Applications include pump panels, commercial HVAC, oil rigs
and others.
The 355 Series uses microcontroller technology to monitor
incoming voltage and de-energize its output relay if power
problems exist. The 355 Series can protect motors from damage
caused by single-phasing, high and low voltage, phase reversal
and voltage unbalance. It has four diagnostic LEDs that clearly
show overvoltage, undervoltage, voltage unbalance, reversephase and normal conditions.
The 355200 is equipped with a heavy-duty 10A general purpose
SPDT relay. The 355400 and 355600 are equipped with a 470VA
@ 600VAC pilot duty SPDT relay. A high voltage (600V) DPDT
relay output option is available with the 400V model.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constantly monitors 3 phase voltage to protect
against harmful line conditions, even before the
motor is started
Advanced LED indication Provides diagnostics which can be used for
troubleshooting and to determine relay status
Adjustable trip and
restart delay settings
Prevent nuisance tripping due to rapidly fluctuating
power line conditions and allows staggered start up
of multiple motors, after a fault, to prevent a low
voltage condition
Combines protection
and diagnostics
Perfect for heavy duty applications: pump panels,
commercial HVAC, and oil rigs
600V rated relay
contacts available
on some models
Eliminates the need for a control transformer to step
voltage down to 120 - 240V for a control circuit
3-Phase Voltage/Phase Monitor
355 SERIES
Wiring Diagram
TYPICAL WIRING DIAGRAM FOR MODEL 355 WITH ALARM CONTROL
TYPICAL WIRING DIAGRAM FOR MODEL 355 WITH MOTOR CONTROL
Ordering Information
MODEL LINE VOTAGE DESCRIPTION
355200 190-240VAC SPDT
355400 380-480VAC SPDT
3554005 380-480VAC DPDT
355600 475-600VAC SPDT
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix page 509, Figure 6.
© 2022 Littelfuse, Inc. 229
Protection Relays
Voltage Monitoring Relays
Specifications
Input Characteristics
Line Voltage
355200 190-240VAC
355400 380-480VAC
355600 475-600VAC
(Specify voltage range)
Frequency 50*/60Hz
Functional Characteristics
Low Voltage (% of setpoint)
Trip 90% ±1%
Reset 93% ±1%
High Voltage (% of setpoint)
Trip 110% ±1%
Reset 107% ±1%
Voltage Unbalance (NEMA)
Trip 2-8% adjustable
Reset Trip setting minus 1%
Trip Delay Time:
Low & High Voltage
and Unbalance 2-30 seconds adjustable
Single-phasing Faults
(>25% UB) 2 seconds
Restart Delay Time
After a Fault or Power Loss Manual, 2-300 seconds adj.
Output Characteristics
Output Contact Rating
SPDT (355200)
Pilot Duty 480VA at 240VAC
General Purpose 10A
SPDT (355400, 355600)
Pilot Duty 470VA @ 600VAC
DPDT (-5 Option)
Pilot Duty 470VA @ 600VAC
355 SERIES
General Characteristics
Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Repeat Accuracy
Fixed Conditions ±0.1%
Maximum Input Power 6 W
Terminal
Torque 7 in.-lbs.
Wire Size 12-18AWG
Transient Protection
(Internal) 2500V for 10 ms
Safety Marks
UL UL508 (File #E68520)
Dimensions H 74.42 mm (2.93”); W 133.86 mm (5.27”);
D 74.93 mm (2.95”)
Weight 0.94 lb. (15.04 oz., 426.38 g)
Mounting Method #8 screws
Special Options
Option 5 - DPDT Relay
*Note: 50Hz will increase all delay times by 20%.
Littelfuse.com/355
AC SYSTEM MONITORS/LOAD SENSORS
9
230 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/455
455 SERIES
3-Phase Voltage/Phase Monitor
Description
The 455 Series are 3-phase voltage monitors that combine load
and line side monitoring to offer complete protection. Monitoring
the load side will alert the user of contactor failure or impending
contactor failure. Line side monitoring will also protect the
motor from damaging fault conditions that may be present prior
to the motor starting. With other line/load side monitors, the
motor must be started before a voltage fault is detected. With
the 455, your motor is fully protected at all times.
The 455 Series are 3-phase, dual range voltage monitors that
protect 190-480VAC, 50*/60Hz motors, regardless of their size.
It automatically selects between the 200V and 400V range
when the user selects the nominal voltage setpoint. Other
adjustments include a 2-30 second trip delay, a 2-300 second
restart delay (and manual restart) and a voltage unbalance
trip point of 2-8%. The voltage monitor’s circuitry is powered
through the line side connections, so there is no need for
separate control power, making it easy to install.
Equipped with an infrared LED, the 455 Sereies can
communicate to the optional hand-held diagnostic tool,
Informer-MS to obtain valuable information such as real-time
voltage, voltage unbalance on both line and load sides, motor
run hours, last 20 faults, last 32 motor starts, high and low
voltage trip points, voltage unbalance trip point, restart and trip
delay settings, LED status and more.
Features & Benefits
FEATURES BENEFITS
Load side monitoring
of contactor
Protects motor from contactor failure or worn
contacts.
Monitors contactor
or starter Prevents rapid cycling
Infrared LED Capable Increases personnel safety line of sight monitoring
using optional Informer-MS
Accessories
Informer-MS
A hand-held diagnostic tool designed for use
with Littelfuse® 455 equipped with an infrared
LED transmitter
Informer IR Kit-36
36” infrared adapter cable attaches to the face
of the unit to provide remote diagnostics without
opening the panel.
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION
455 190-480VAC Universal line and load side monitor
455480R 380-480VAC Used in high voltage applications with pilot
duty 470VA @ 600VAC
455575 475-600VAC For use in Canada or NE USA where 575V
utility power services are common.
Wiring Diagram
MODEL 455 WITH MOTOR CONTROL USING A 3-POLE CONTACTOR
MODEL 455 WITH MOTOR CONTROL USING A 2-POLE CONTACTOR
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix page 509, Figure 6.
© 2022 Littelfuse, Inc. 231
Protection Relays
Voltage Monitoring Relays
455 SERIES
Specifications
Frequency 50*/60Hz
Low Voltage (% of setpoint)
Trip 90% ±1%
Reset 93% ±1%
High Voltage (% of setpoint)
Trip 110% ±1%
Reset 107% ±1%
Voltage Unbalance (NEMA)
Trip 2-8% adjustable
Reset Trip setting minus 1%
Trip Delay Time
Low & High Voltage
and Unbalance 2-30 seconds adjustable
Single-phasing Faults
(>25% UB) 2 seconds fixed
Restart Delay Time
After a Fault Manual, 2-300 seconds adj.
After a Complete Power Loss Manual, 2-300 seconds adj.
After a Motor Shut-down Manual, 2-300 seconds adj.
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A
High Voltage Relay (-480R)
Pilot Duty 470VA @ 600VAC
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Repeat Accuracy
Fixed Conditions ±0.1%
Maximum Input Power 6 W
Terminal
Torque 7 in.-lbs.
Wire Size 12-18AWG
Transient Protection
(Internal) IEC 61000-4-5;1995 ±6kV
Safety Marks
UL UL508 (File #E68520)
CSA C22.2 No. 14 (File #46510)
CE IEC 60947-6-2
Dimensions H 74.4 mm (2.93”); W 133.9 mm (5.27”);
D 74.9 mm (2.95”)
Weight 1.1 lbs. (17.6 oz., 498.95 g)
Mounting Method #8 screws
*Note: 50Hz will increase all delay times by 20%.
Littelfuse.com/455
AC SYSTEM MONITORS/LOAD SENSORS
9
232 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/460
3-Phase Voltage Monitor
460 SERIES
Wiring Diagram
TYPICAL WIRING DIAGRAM FOR MODEL 460 WITH MOTOR CONTROL
Ordering Information
MODEL VOLTAGE DESCRIPTION
460 190-480VAC Automatically senses line voltage, adjustable 1-30 second trip delay, 1-500 second restart delay, and 2-8% voltage unbalance trip point
460-L 190-480VAC Fixed 4 second trip delay and 1 second for single-phase faults, and fixed 6% voltage unbalance trip point
460-14 190-480VAC Equipped with 2 sets of contacts: Form A (NO) and Form B (NC). Used for applications requiring 2 different voltages such as 5VDC
for a PLC input and 115VAC for an alarm
460-575 475-600VAC Commonly used in Eastern Canada and on generator units that generate 600 VAC power
460-575-14 475-600VAC Commonly used in Eastern Canada and on generator units that generate 600 VAC power. Equipped with 2 sets of contacts: Form A
and Form B
460-15 190-480VAC Equipped with 2 sets of Form A (NO) contacts. Used on applications where two different units are to be controlled at once such as a
unit that has separate contacts for a compressor and a fan
460-MR 190-480VAC Equipped with a 2-prong connection for a normally open push button mounted outside the panel. Used in applications requiring an
external manual reset button
460-VBM 190-480VAC Fixed 6% voltage unbalance trip point. User adjustable low and high voltage trip points
460-400HZ 190-480VAC For use with 400Hz power supply
460-OEM 190-480VAC Bulk package of 460, 20 units
460L-OEM 190-480VAC Bulk package of 460-L, 20 units
Description
The 460 is a 3-phase voltage monitor that protects 190-480VAC
or 475-600V, 50/60Hz motors regardless of size. The product
provides a user selectable nominal voltage setpoint and the
voltage monitor automatically senses line voltage.
This unique microcontroller-based voltage and phase-sensing
device constantly monitors the 3-phase voltages to detect
harmful power line conditions such as low, high, and unbalanced
voltage, loss of any phase, and phase reversal. When a
harmful condition is detected, the MotorSaver® output relay
is deactivated after a specified trip delay. The output relay
reactivates after power line conditions return to an acceptable
level for a specified amount of time (restart delay). The trip and
restart delays prevent nuisance tripping due to rapidly fluctuating
power line conditions.
All 460 models feature adjustable 1-30 second trip delay, 1-500
second restart delay, 2-8% voltage unbalance trip point, and one
form C contact except where noted below.
Features & Benefits
FEATURES BENEFITS
Auto-sensing wide
voltage range
Automatically senses system voltage between 190
- 480VAC or 475-600VAC. Saves set-up time
Adjustable trip & restart
delay settings
Prevent nuisance tripping due to rapidly fluctuating
power line conditions
Microcontroller
based circuitry Improved accuracy and higher reliability
Advanced LED
diagnostics Quick visual indicator for cause of trip and relay status
Adjustable voltage
unbalance trip setting
Provides reliable protection when regenerative
voltage is present
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 510, Figure 10.
© 2022 Littelfuse, Inc. 233
Protection Relays
Voltage Monitoring Relays
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 6 W
Class of Protection IP20, NEMA 1 (finger safe)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 4.5 in.-lbs.
Wire Type Stranded or solid 12-20 AWG, one per terminal
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
RFI, Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3,
3.5kV input power and controls
Surge
IEC IEC 61000-4-5, Level 3, 4kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance
to a level of 6kV line-to-line
Hi-potential Test Meets UL508 (2 x rated V +1000V for 1 minute)
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947-6-2
Enclosure Polycarbonate
Dimensions H 88.9 mm (3.5”); W 52.9 mm (2.08”);
D 59.69 mm (2.35”)
Weight 0.7 lb. (11.2 oz., 317.51 g)
Mounting Method 35 mm DIN rail or Surface Mount
(#6 or #8 screws)
460-MR (manual reset) External NO pushbutton required.
Specifications
Frequency 50/60Hz
Low Voltage (% of setpoint)
Trip 90% ±1%
Reset 93% ±1%
High Voltage (% of setpoint)
Trip 110% ±1%
Reset 107% ±1%
Voltage Unbalance (NEMA)
Trip 2-8% adjustable
Reset Trip setting minus 1% (5-8%)
Trip setting minus 0.5% (2-4%)
460L 6% UB fixed (4.5% reset)
Trip Delay Time
Low, High and
Unbalanced Voltage 1-30 seconds adjustable
460L 4 seconds fixed
Single-Phase Faults
(>15% UB) 1 second fixed
Restart Delay Time
After a Fault 1-500 seconds adjustable
After a Complete Power Loss 1-500 seconds adjustable
Output Contact Rating
Form C
Pilot Duty 480VA @ 240VAC, B300
General Purpose 10A @ 240VAC
Form A & Form B
Pilot Duty 360VA @ 240VAC, B300
General Purpose 8A @ 240VAC
460 SERIES
Littelfuse.com/460
AC SYSTEM MONITORS/LOAD SENSORS
9
234 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/601
Description
The Model 601 is a fully-programmable voltage monitor
designed to protect 3-phase motors from loss of any phase
(single-phasing), phase reversal, low or high voltage, voltage
unbalance, low or high frequency, and rapid cycling. It can be
used as a stand-alone product or networked with an RM1000,
RM2000, PLC, computer or SCADA system.
When a harmful condition is detected, the 601’s output relay
is deactivated after the specified trip delay. The output relay
reactivates after power line conditions return to an acceptable
level for the programmed restart delay (RD2).
Eleven (11) setpoints are viewable with the 3-digit LED display
or from a networked device:
J low voltage
J high voltage
J voltage unbalance
J low frequency
J high frequency
J RS485 address
J trip delay for voltage/
frequency faults
J trip delay for single-phase faults
J rapid-cycle timer (RD1)
J restart delay after all faults (RD2)
J type of restart after all faults
(manual or automatic)
Six (6) parameters are viewable while the motor is running:
J L1-L2 voltage
J L2-L3 voltage
J L1-L3 voltage
J average voltage
J voltage unbalance (%)
J frequency
When used with the RS485MS-2W communications module,
the 601 can communicate with most Modbus RTU master
devices. Voltage conditions can be monitored and setpoints can
be changed remotely using Solutions software, an RM1000,
RM2000 or other device.
Features & Benefits
FEATURES BENEFITS
Built-in display Provides real time information and diagnostics to help
with troubleshooting
Programmable voltage
and frequency settings Allows usage on wide range of systems
2 programmable restart
delay timers
Program separate restart delay time for rapid cycle
protection and motor cool down
2 programmable trip
delay timers
1 trip delay specifically for Phase Loss/Single-Phase
fault condition, 1 trip delay for all other fault
conditions
Programmable
restart control
Choose between an adjustable automatic or manual
restart to best meet individual application needs
Flexible reset
Reset options include pushbutton on relay or remote
reset with optional 777-MRSW or OL-RESET remote
reset kit
Remote display
compatibility
Increases safety through remote display of real-time
data and fault history, without the need to open the
cabinet. Aids with arc flash safety regulations
Network
communications
capability
Compatible with RS-485 Modbus
communications module
3-Phase Voltage & Frequency Monitor
601 SERIES
Wiring Diagram
MODEL 601 WITH MOTOR CONTROL
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION
601 190-480VAC Universal 3-Phase Voltage & Frequency Monitor
601575 500-600VAC Used primarily in Canada and NE USA where
575V utility power services are common
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix page 507, Figure 1.
© 2022 Littelfuse, Inc. 235
Protection Relays
Voltage Monitoring Relays
Accessories
RS485MS-2W Communication Module
(for limited Modbus capabilities) Required to
enable the Modbus communications function on
Model 77X-type products.
RM1000 Remote Monitor
The RM1000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring for up to 16 devices.
RM2000 Remote Monitor
The RM2000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring with event storage and real-time
clock for date and time stamp.
777-MRSW Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
OL-RESET Manual Remote Reset Kit
Allows the 777 line of MotorSaver® and
PumpSaver® products to be manually reset
without opening the panel door.
601 SERIES
Specifications
Input Characteristics
Frequency 50/60Hz
Functional Characteristics
Programmable Operating Points
LV - Low Voltage Threshold 170V (450V*) - HV Setting
HV- High Voltage Threshold LV Setting - 528V (660V*)
VUB - Voltage Unbalance
Threshold 2-15% or off
LF - Low Frequency
Threshold 35Hz - HF Setting
HF - High Frequency
Threshold LF Setting - 75Hz
TD1 - Trip Delay for
Voltage/Unbalance/
Frequency Faults 1-50 seconds
TD2 - Trip Delay for
Single-Phase Faults 1-50 seconds
RD1 - Rapid-Cycle Timer 0, 2-500 seconds
RD2 - Restart Delay After
All Faults 2-500 seconds
#RF - Type of Restart Manual or Automatic
ADDR - RS-485 Address A01-A99
Fixed Reset Points
Overvoltage Reset 97% of HV Setting
Low Voltage Reset 103% of LV Setting
Voltage Unbalance Reset UB Setting -1%
Low Frequency Reset LF Setting +0.6Hz
High Frequency Reset HF Setting -0.6Hz
Output Characteristics
Output Contact Rating
Pilot Duty 480VA @ 240VAC
General Characteristics
Temperature Range -20° to 70°C (-4° to 158°F)
Accuracy
Voltage ±1%
Timing 5% ±1 second
Repeatability
Voltage ±0.5%
Maximum Input Power 5 W
Transient Protection (Internal) 2500 V for 10 ms
Safety Marks
UL UL508 (File #E68520)
CSA C22.2 No. 14 (File #46510)
CE IEC 60947-6-2
Dimensions H 77.47 mm (3.05”); W 97.79 mm (3.85”);
D 128.27 mm (5.05”)
Weight 1.2 lbs. (19.2 oz., 544.31 g)
Mounting Method Surface mount (4 - #8 screws)
or DIN rail mount
The 601 can be preprogrammed prior to installation by applying at least 120V to the L1 and
L2 terminals.
*575V Model
Littelfuse.com/601
AC SYSTEM MONITORS/LOAD SENSORS
9
236 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/601csdp1
601-CS-D-P1
Description
The 601-CS-D-P1 3-phase power monitor is a fully programmable
electronic power monitor designed to monitor 3-phase systems.
The 601-CS-D-P1 has a single relay that can be configured as
a general purpose network output or to trip on ground faults.
The 601-CS-D-P1 monitors ground fault current, phase currents,
phase voltages, power factor and frequency. The RS485MS-2W
communications module allows the 601-CS-D-P1 to communicate
using the Modbus RTU protocol. The Modbus connection can be
used to monitor power parameters, setup the device or control
the fault relay. A DeviceNet™ communications I/O module
(CIO-601CS-DN-P1) is available as well. This CIO module only
works with the 601-CS-D-P1 unit. It is used for sending the
information from the 601-CS-D-P1 over a DeviceNet™ network.
It also provides I/O capabilities and the ability to set the
parameters of the 601-CS-D-P1.
Note: This product must be used with an external Zero-Sequence CT for proper operation
(not included).
Features & Benefits
FEATURES BENEFITS
Built-in display
Visual indication for programming and viewing
real-time parameters for nominal voltage, voltage
unbalance, current, current unbalance, ground
fault warning, ground fault trip, and ground fault
motor acceleration
15 Programmable
parameters to control
the device operation
Allows the user to customize the protection required
for their system
2 programmable trip
delay timers
Program separate trip delay time for motor
acceleration and ground fault
Network
communications
capability
Compatible with Modbus RTU and DeviceNet™
protocols with the use of separate
communications module
Accessories
CIO-601CS-DN-P1 Module
Convenient, cost-effective DeviceNet™ interface
device capable of providing discrete control and
monitoring of motor starters, drives and other
devices over a DeviceNet™ network.
3-Phase Power Monitor
Wiring Diagram
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix page 507, Figure 1.
© 2022 Littelfuse, Inc. 237
Protection Relays
Voltage Monitoring Relays
601-CS-D-P1
Specifications
Input Characteristics
Line Voltage 200-480VAC
Frequency 50/60Hz
Motor Full Load Amp Range 0.5-175A (direct) 176-800A (CTs required)
Input Ground Fault Current 0.5-10A
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty 480VA @ 240VAC
General Purpose 10A @ 240VAC
Expected Life
Mechanical 1 x 106
operations
Electrical 1 x 105
operations at rated load
General Characteristics
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Accuracy at 25° C (77° F)
Voltage +/-1%
Current +/-3% (<175A direct)
GF Current +/-3%
Repeatability
Voltage +/-0.5% of nominal voltage
Current +/-1% (<175A direct)
Maximum Input Power 10 W
Pollution Degree 3
Class of Protection IP20
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Terminal Torque 7in.-lbs.
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity,
Conducted IEC 61000-4-6, Level 3 10V
Radio Frequency
Immunity, Radiated IEC 61000-4-3, Level 3, 10 V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power
Short Circuit Rating 100kA rms, SYM, 600VAC max.
Surge
Immunity IEC IEC 61000-4-5, Level 3, 2kV line-to-line;
Level 4, 4kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance to a
level of 6kV line-to-line
High Potential Test Meets UL508 (2 x rated V +1000V for 1 minute)
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947-1, IEC 60947-5-1
Max Conductor Size
(with insulation) 0.65”
Dimensions H 77.47 mm (3.05”); W 97.79 mm (3.85”);
D 128.27 mm (5.05”)
Weight 1.2 lbs. (19.2 oz., 544.31 g)
Mounting Method Surface mount (4 - #8 screws) or
DIN rail mount
Littelfuse.com/601csdp1
AC SYSTEM MONITORS/LOAD SENSORS
9
238 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/wvm
WVM SERIES
Description
The WVM Series provides protection against premature
equipment (motor) failure caused by voltage faults on the
3-phase line. The WVM’s microcontroller design provides reliable
protection even if regenerated voltages are present. It combines
dependable fault sensing with a 10 fault memory and a 6 LED
status display. Part instrument, part control, the WVM protects
your equipment when you’re not there and displays what
happened when you return. The WVM is fully adjustable and
includes time delays to prevent nuisance tripping and improve
system operation. Time delays include a 0.25 to 30s adjustable
trip delay, an adjustable 0.25 to 64m (in 3 ranges) restart delay,
plus a unique 3 to 15s true random start delay. The random start
delay prevents voltage sags caused by simultaneous restarting
of numerous motor loads after a power outage.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring to protect against phase loss,
phase reversal, over voltage, under voltage,
unbalance, and short cycling
Fault memory Stores the 10 most recent faults, which provides
diagnostics for troubleshooting
LED indication Provides visual indictation of existing relay/fault
status or faults stored in memory.
Switch selectable
automatic restart,
delayed automatic
restart, and manual reset
Allows user adjustment to handle unique
application requirements
Random start delay
Prevents voltage sags caused by simultaneous
restarting of multiple motor loads after a
power outage
Operation
The output relay is energized when all conditions are acceptable
and the WVM is reset. A restart and/or random start delay may
occur before the output relay is energized.
Field Adjustment: Select the line voltage listed on the motor’s
name plate. This automatically sets the over and undervoltage
trip points. No further adjustment should be required to achieve
maximum equipment protection.
Wiring Diagram
F = Fuses
NO = Normally Open
NC = Normally Closed
RS = Optional Remote
Reset Switch
Relay contacts are isolated.
CAUTION: 2 amp max fast acting fuses must be
installed externally in series with each input. (3)
Ordering Information
MODEL LINE VOLTAGE UNBALANCE TRIP DELAY SWITCH SELECTABLE RESET METHOD RESTART DELAY
WVM011AL 500 to 600VAC 2 - 10% 0.25 - 30s Auto restart upon fault trip 0.25 - 64s
WVM611AH 200 to 240VAC 2 - 10% 0.25 - 30s Auto restart upon fault trip 0.25 - 64m
WVM611AL 200 to 240VAC 2 - 10% 0.25 - 30s Auto restart upon fault trip 0.25 - 64s
WVM611RL 200 to 240VAC 2 - 10% 0.25 - 30s Auto restart upon fault correction 0.25 - 64s
WVM811AH 355 to 425VAC 2 - 10% 0.25 - 30s Auto restart upon fault trip 0.25 - 64m
WVM811RL 355 to 425VAC 2 - 10% 0.25 - 30s Auto restart upon fault correction 0.25 - 64s
WVM911AH 400 to 480VAC 2 - 10% 0.25 - 30s Auto restart upon fault trip 0.25 - 64m
WVM911AL 400 to 480VAC 2 - 10% 0.25 - 30s Auto restart upon fault trip 0.25 - 64s
WVM911AL-60 400 to 480VAC 2 - 10% 0.25 - 30s Auto restart upon fault trip 0.25 - 64s, no random start delay
WVM911AN 400 to 480VAC 2 - 10% 0.25 - 30s Auto restart upon fault trip 6 - 300s
WVM911RH 400 to 480VAC 2 - 10% 0.25 - 30s Auto restart upon fault correction 0.25 - 64m
WVM911RL 400 to 480VAC 2 - 10% 0.25 - 30s Auto restart upon fault correction 0.25 - 64s
WVM911RN-60 400 to 480VAC 2 - 10% 0.25 - 30s Auto restart upon fault correction 6 - 300s, no random start delay
If you don’t find the part you need, call us for a custom product 800-843-8848
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 29.
© 2022 Littelfuse, Inc. 239
Protection Relays
Voltage Monitoring Relays
WVM SERIES
Read Memory: Fault(s) stored in the memory are indicated
when the yellow LED is flashing, up to 10 faults are noted.
Memory Reset: To clear the memory of all faults
stored, rotate selector to Clear Memory for 5 seconds.
The yellow LED will turn off.
Memory Overload: Only the 10 most recent faults
are retained.
Random Start Delay: A new 3 to 15s random start delay is
selected by the microcontroller when a fault is corrected and
when the operating voltage (L1, L2, L3) is applied to the WVM.
A random start delay does not occur when the reset is manual.
Automatic Restart: Upon fault correction, the output will
re-energize after a random start delay.
Automatic Restart Upon Fault Trip: When a fault is sensed for
the full trip delay, the output de- energizes and a restart delay
is initiated. This delay locks out the output for the delay period.
Should the fault be corrected by the end of the restart delay, the
output will re-energize after a random start delay. A restart delay
will also occur when operating voltage (L1, L2, L3) is applied to
the WVM.
Manual Reset: After a fault condition is corrected, the WVM can
be manually reset. There are two methods; a customer supplied
remote switch, or the onboard selector switch.
Manual Reset (Onboard): Rotate selector switch from the
Manual Reset position to Auto Restart w/Delay then back
again to Manual Reset within 3 seconds. The output will
immediately energize.
Remote Reset: Reset (Restart) is accomplished by a momentary
contact closure across terminals 1 & 2. The output will
immediately energize. Remote switch requirements are ≥10mA
@ 20VDC and the reset terminals are not isolated from line
voltage. A resistance of ≤20KΩ across terminals 1 & 2 will cause
immediate automatic restart.
Automatic Restart Upon Fault Correction: (P/N includes an R)
When a fault is sensed for the full trip delay, the output relay
de-energizes. Upon correction of the fault, a restart delay
begins. At the end of this delay, the output will re-energize after
a random start delay. If a fault occurs during restart timing, the
restart time delay will be reset to zero, and the output will not
energize until the restart delay is completed.
Accessories
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 Vac/500 Vdc
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Specifications
Line Voltage
Type 3-phase delta or wye with no connection
to neutral
Operating Voltage Model Adj. Line Voltage Range
240 200-240VAC
380 355-425VAC
480 400-480VAC
600 500-600VAC
AC Line Frequency 50/60 Hz
Overvoltage, Undervoltage,
& Voltage Unbalance
Overvoltage Trip Point 109-113% of adjusted voltage
Reset Voltage -2% of trip point
Undervoltage Trip Point 88-92% of adjusted voltage
Reset Voltage +2% of trip point
Voltage Unbalance Adjustable from 2-10%*
Trip Delay Adjustable from 0.25 - 30s ±15%
Phase Loss ≥ 15% unbalance
Response Time ≤ 200 ms
Random Start Delay Range 3 - 15s
Reset (Restart) Delay
Low Range 0.25-64s ±15%
Normal Range 6-300s ±15%
High Range 0.25-64m ±15%
Fault Memory
Type Nonvolatile RAM
Capacity Stores last 10 faults
Status Indicators 6 LEDs provide existing status &
memory readout
Note: 50% of operating line voltage must
be applied to L1 & L2 for operation of
status indicators
Output
Type Electromechanical relay
Form Isolated, SPDT
Rating 10A resistive @ 250VAC; 6A inductive
(0.4 PF) @ 250VAC
Life Mechanical - 1 x 107
Protection
Phase Reversal/Failure ASME A17.1 Rule 210.6
Motors and Generators NEMA MG1 14:30, 14:35
Surge IEEE 62.41-1991 Level B
Isolation Voltage ≥ 2500V RMS input to output
Mechanical
Mounting Surface with 2 or 4 #8 (M4 x 0.7) screws
Dimensions H 175.3 mm (6.9”); W 111.8 mm (4.4”);
D 61.0 mm (2.4”)
Termination Screw terminals with captive wire clamps for
up to #12 AWG ( 3.2 mm2
) wire
Environmental
Operating/Storage
Temperature -40° to 65°C / -40° to 85°C
Weight ≅ 25 oz ( 709 g)
* Unbalance reset is 90% of the unbalance setting (i.e. VUB at 5% reset is 4.5%)
Littelfuse.com/wvm
AC SYSTEM MONITORS/LOAD SENSORS
9
240 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/dlmu
DLMU SERIES
Description
The DLMU Series is a universal voltage, 3-phase voltage
monitor. It continuously measures the voltage of each of the
three phases with microcontroller accuracy and compares the
value to preset trip points. It separately senses phase reversal
and loss; over, under and unbalanced voltages; and over or
under frequency. Protection is assured during periods of large
average voltage fluctuations or when regenerated voltages
are present. The unit trips within 200ms when phase loss
is detected. Adjustable time delays are included to prevent
nuisance tripping and short cycling of sensitive equipment.
The isolated, 10A, SPDT and 2A alarm output relay contacts
trip when a phase voltage exceeds the trip limits for the trip
delay. Nominal line voltage, voltage unbalance, and time
delays are knob adjustable. The phase loss setpoint and the
acceptable frequency range are fixed. Both delta and wye
systems can be monitored; no connection to neutral is required.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller
based circuitry
Constant monitoring to protect against phase loss,
phase reversal, over voltage, under voltage,
unbalance, short cycling and over/under frequency
Universal line
voltage range
Flexibility to work in 200 to 480VAC or 500 to
600VAC applications
DIN rail (35mm) or
surface mounting Installation flexibility
LED indication Provides diagnostics of relay, fault and time
delay status
User adjustable
time delays
Prevents nuisance tripping and short cycling of
sensitive equipment
Accessories
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 Vac/500 Vdc
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Ordering Information
MODEL LINE VOLTAGE OUTPUT RESTART FUNCTION VOLTAGE UNBALANCE TRIP DELAY RESTART DELAY
DLMHBRAAA 500 to 600VAC SPDT & NO Staggered restart Adjustable 2 - 10% Adjustable 1 - 30s Adjustable 0.6 - 300S
DLMUBLAAA 200 to 480VAC SPDT & NO Lockout, min off time Adjustable 2 - 10% Adjustable 1 - 30s Adjustable 0.6 - 300S
DLMUBNAAN 200 to 480VAC SPDT & NO No restart delay Adjustable 2 - 10% Adjustable 1 - 30s None
DLMUBRAAA 200 to 480VAC SPDT & NO Staggered restart Adjustable 2 - 10% Adjustable 1 - 30s Adjustable 0.6 - 300S
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
!
L1, L2, L3 = Line Voltage Input
NO = Normally Open Contact
NC = Normally Closed Contact
C = Common, Transfer Contact
CAUTION: 2 amp max. fast acting fuses are
recommended to protect the equipment‘s wiring.
They are not required to protect the DLMU.
! = Select alarm contact connection as N.O. or N.C. when ordering;
N.O. Shown.
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 30.
© 2022 Littelfuse, Inc. 241
Protection Relays
Voltage Monitoring Relays
DLMU SERIES
Operation
Upon application of line voltage, the output is de-energized
and the restart delay begins. If all the 3-phase voltages are
within the acceptable range, the output energizes at the end
of the restart delay. The microcontroller circuitry automatically
senses the voltage range, and selects the correct operating
frequency (50 or 60Hz). The over and undervoltage trip points
are set automatically. When the measured value of any phase
voltage exceeds the acceptable range limits (lower or upper)
the trip delay begins. At the end of the trip delay the output
relay de-energizes. If the phase voltage returns to an acceptable
value before the trip delay expires, the trip delay is reset and the
output remains energized. Under, over, and unbalanced voltages
plus over or under frequency must be sensed for the complete
trip delay before the unit trips. The unit trips in 200ms when
phase loss or reversal are sensed. The unit will not energize if a
fault is sensed as the line voltage is applied.
Reset: Reset is automatic upon correction of the voltage or
frequency fault or phase sequence.
Restart Delay Options
L = Lockout or minimum OFF time. The restart delay begins
when the output trips. The unit cannot be re-energized until the
restart delay is complete. This provides a minimum off time
or lockout time to allow equipment sensitive to short cycling,
time to reset. If the fault is corrected after the restart delay is
complete the output energizes immediately. The restart delay
also occurs when line voltage is applied/reapplied.
R = Restart Delay on fault correction. The restart delay begins
when line voltage is reapplied or when a voltage fault is
corrected. This option is normally selected when staggered
restarting of multiple motors on a power system is required.
N = No Restart Delay. 0.6 second initialization delay on
application of line voltage applies.
Restart Notes: All restart options remain reset when the
following conditions are detected:
1. Phase loss (phase unbalance greater than 25%)
2. Average line voltage less than 120VAC
3. Phase reversal
The restart delay begins when the condition is corrected.
LED Operation
The LED flashes green during the restart delay, then glows
green when the output energizes. It flashes red during the trip
delay then glows red when the output de-energizes. It flashes
red/green if phase reversal is sensed. If a fault is sensed during
the restart delay, the LED will glow red during that portion or the
full restart delay.
Specifications
Line Voltage
Type 3-phase delta or wye with no connection
to neutral
Operating Voltage
200-480VAC Voltage Line Line Voltage
Range Adj.Range Frequency Max.
240 200-240VAC 50/60Hz
380 340-420VAC 50Hz
480 400-480VAC 60Hz 550VAC
600VAC 600 500-600VAC 50/60Hz 600VAC
AC Line Frequency 50/60 Hz automatically detected
Phase Loss ≥ 25% unbalance
Response Time ≤200ms
Undervoltage & Voltage
Unbalance
Type Voltage detection with delayed trip &
automatic reset
Overvoltage
TripVoltage 109 - 113% of the adjusted line voltage
Reset Voltage ≅ -3% of the trip voltage
Undervoltage
Trip Voltage 88 - 92% of the adjusted line voltage
Reset Voltage ≅ +3% of the trip voltage
Voltage Unbalance Adjustable 2 - 10% or specify fixed unbalance
of 2 - 10% in 1% increments
Reset on balance ≅ -0.7% unbalance
Trip Delay
Active On Over/undervoltage, voltage unbalance, over/
under frequency
Range Adjustable from 1 - 30s or specify fixed delay
1 - 30s in 1s increments
Tolerance ± 15%
Restart Delay
Range Adjustable from 0.6 - 300s; if no restart delay
is selected a 0.6s initialization delay applies
Tolerance ± 15%
Over/Under Frequency ±4%; Reset ±3%; 50/60 Hz
Phase Sequence A, B, C, L1, L2, L3
Response Time -Phase
Reversal & Phase Loss ≤200 ms
Reset Automatic
Output
Type Isolated Electromechanical Relay
Form C Isolated, SPDT
Form C Rating 10A resistive @ 240VAC;
8A resistive @ 277VAC; NO-1/4 hp @ 120VAC;
1/3 hp @ 240VAC
Form A Isolated, NO, SPST
Form A Rating 2A @ 277VAC
Life Mechanical - 1 x 106
; Electrical - 1 x 303
Littelfuse.com/dlmu
AC SYSTEM MONITORS/LOAD SENSORS
9
242 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/dlmu
Protection
Phase Reversal/Failure ASME A17.1 Rule 210.6
Motors and Generators NEMA MG1 14:30, 14:35
Surge IEEE C62.41-1991 Level B
Isolation Voltage ≥ 2500V RMS input to output
Mechanical
Mounting Surface mount with 2 #8 (M4 x 0.7) screw or
snap on 35mm DIN Rail
Note: 0.25 in.(6.35 mm) spacing between
units or other devices is required
Dimensions H 110 mm (4.33”); W 75 mm (2.95”);
D 50 mm (1.97”)
Termination Screw terminals with captive wire clamps for
up to #14 AWG (2.5 mm2
) wire
Terminal Torque 4.4 in.-lbs.
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 8.6 oz (244 g)
DLMU SERIES
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 243
Protection Relays
Voltage Monitoring Relays
HLMU SERIES
Description
The HLMU Series is a universal voltage, encapsulated, 3-phase
voltage monitor. It continuously measures the voltage of each of
the three phases with microcontroller accuracy and compares
the value to preset trip points. It separately senses phase
reversal and loss; over, under and unbalanced voltages; and
over or under frequency. Protection is assured during periods
of large average voltage fluctuations, or when regenerated
voltages are present. The unit trips within 200ms when phase
loss is detected. Adjustable time delays are included to prevent
nuisance tripping and short cycling of sensitive equipment. The
isolated, 10A, DPDT relay contacts trip when a phase voltage
exceeds the trip limits for the trip delay. Nominal line voltage,
voltage unbalance, and time delays are knob adjustable. The
phase loss setpoint and the acceptable frequency range are
fixed. Both delta and wye systems can be monitored; no
connection to neutral is required.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller based
circuitry
Constant monitoring to protect against phase loss,
phase reversal; over, under, and unbalanced voltage;
over and under frequency
Universal line
voltage range Flexibility to work in 200 to 480VAC applications
DIN rail (35mm) or
surface mounting Installation flexibility
LED indication Provides diagnostics of relay, fault and time
delay status
Encapsulated Protects against shock, vibration, and humidity
Finger-safe
terminal blocks Meets IEC 61000 safety requirements
Accessories
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 VAC/500 VDC
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Ordering Information
MODEL OUTPUT RESTART
FUNCTION
VOLTAGE
UNBALANCE
TRIP
DELAY
RESTART
DELAY
HLMUDLAAA DPDT
Lockout,
min off
time
Adjust.
2 - 10%
Adjust.
1 - 30s
Adjust.
0.6 - 300s
HLMUDN0405N DPDT No restart
delay Fixed, 4% Fixed, 5s None
HLMUDNAAN DPDT No restart
delay
Adjust.
2 - 10%
Adjust.
1 - 30s None
HLMUDRAAA DPDT Staggered
restart
Adjust.
2 - 10%
Adjust.
1 - 30s
Adjust.
0.6 - 300s
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
L1, L2, L3 = Line Voltage Input
NO = Normally Open Contact
NC = Normally Closed Contact
C = Common, Transfer Contact
CAUTION: 2 amp max. fast acting
fuses are recommended to protect the
equipment‘s wiring. They are not required
to protect the HLMU.
NOTE: Relay contacts are isolated,
277VAC max.
Littelfuse.com/hlmu
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 31.
244 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/hlmu
HLMU SERIES
Operation
Upon application of line voltage, the output is de-energized
and the restart delay begins. If all the three-phase voltages are
within the acceptable range, the output energizes at the end
of the restart delay. The microcontroller circuitry automatically
senses the voltage range, and selects the correct operating
frequency (50 or 60Hz). The over and under voltage trip points
are set at ± 10% of the adjusted line voltage. When the
measured value of any phase voltage exceeds the acceptable
range limits (lower or upper) the trip delay begins. At the end of
the trip delay the output relay de-energizes. If the phase voltage
returns to an acceptable value before the trip delay expires, the
trip delay is reset and the output remains energized. Under, over,
and unbalanced voltages plus over or under frequency must be
sensed for the complete trip delay before the unit trips. The unit
trips in 200ms when phase loss or reversal are sensed. The unit
will not energize if a fault is sensed as the line voltage is applied.
Reset: Reset is automatic upon correction of the voltage or
frequency fault or phase sequence.
Restart Delay Options
L = Lockout or minimum OFF time. The restart delay begins
when the output trips. The unit cannot be re-energized until the
restart delay is complete. This provides a minimum off time
or lockout time to allow equipment sensitive to short cycling,
time to reset. If the fault is corrected after the restart delay is
complete, the output energizes immediately. The restart delay
also occurs when line voltage is applied/reapplied.
R = Restart Delay on fault correction. The restart delay begins
when line voltage is reapplied or when a voltage fault is
corrected. This option is normally selected when staggered
restarting of multiple motors on a power system is required.
N = No Restart Delay. 0.6 second initialization delay on
application of line voltage applies.
Restart Notes: All restart options remain reset when the
following conditions are detected:
1. Phase loss (phase unbalance greater than 25%)
2. Average line voltage less than 120VAC
3. Phase reversal
The restart delay begins when the condition is corrected.
LED Operation
The LED flashes green during the restart delay, then glows
green when the output energizes. It flashes red during the trip
delay then glows red when the output de-energizes. It flashes
red/green if phase reversal is sensed. If a fault is sensed during
the restart delay, the LED will glow red during that portion or the
full restart delay.
Specifications
Line Voltage
Type 3-phase delta or wye with no connection
to neutral
Operating Voltage
200 - 480VAC Range Voltage Adj. Range Frequency
240 200-240VAC 50 or 60Hz
380 340-420VAC 50Hz
480 400-480VAC 60Hz
Line Voltage Max. 550VAC
AC Line Frequency 50/60 Hz automatically detected
Phase Loss ≥ 25% unbalance
Response Time ≤200ms
Undervoltage &
Voltage Unbalance
Type Voltage detection with delayed trip &
automatic reset
Overvoltage
Trip Voltage 109 - 113% of the adjusted line voltage
Reset Voltage ≅ -3% of the trip voltage
Undervoltage
Trip Voltage 88 - 92% of the adjusted line voltage
Reset Voltage ≅ +3% of the trip voltage
Voltage Unbalance
Trip Setpoint Adjustable 2 - 10% or specify fixed unbalance
of 2 - 10% in 1% increments
Reset on Balance ≅ -0.7% unbalance
Trip Delay
Active On Over/undervoltage, voltage unbalance,
over/under frequency
Range Adjustable from 1 - 30s or specify fixed
delay 1 - 30s in 1s increments
Tolerance ± 15%
Restart Delay
Range Adjustable from 0.6 - 300s; if no restart
delay is selected a 0.6s initialization
delay applies
Tolerance ± 15%
Over/Under Frequency ±4%; Reset ±3%; 50/60 Hz
Phase Sequence A, B, C, L1, L2, L3
Response Time-Phase
Reversal & Phase Loss ≤200 ms
Reset Automatic
Output
Type Isolated Electromechanical Relay
Form DPDT
Rating 10A resistive @ 240VAC;
8A resistive @ 277VAC; NO-1/4 hp @ 120VAC;
1/3 hp @ 240VAC
Life Mechanical - 1 x 106
Electrical (at 10A) - DPDT - 1 x 303
Protection
Phase Reversal/Failure ASME A17.1 Rule 210.6
Motors and Generators NEMA MG1 14:30, 14:35
Surge IEEE C62.41-1991 Level B
Isolation Voltage ≥ 2500V RMS input to output
Circuitry Encapsulated
Mechanical
Mounting Surface mount with one #10 (M5 x 0.7) screw
Note: 0.25 in.(6.35 mm) spacing between
units or other devices is required
Dimensions H 76.7 mm (3.0”); W 50.8 mm (2.0”);
D 41.7 mm (1.64”)
Termination Screw terminal connection up to 12 AWG
(3.3 mm2
) wire
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 245
Protection Relays
Voltage Monitoring Relays
PLMU11
Voltage Monitor
Description
The PLMU11 continuously measures the voltage of each of
the three phases to provide protection for 3-phase motors
and sensitive loads. Its microcontroller senses under and
overvoltage, voltage unbalance, phase loss, and phase
reversal. Protection is provided even when regenerated
voltages are present. Universal voltage operation and standard
base connection allows the PLMU11 to replace hundreds of
competitive part numbers.
Operation
Upon application of power, a 0.6s random start delay begins and
the PLMU11 measures the voltage levels and line frequency
and selects the voltage range. The output relay is energized
and the LED glows green when all voltages are acceptable
and the phase sequence is correct. LED flashes green during
trip delay, glows red when output de-energizes. Undervoltage,
overvoltage, and voltage unbalance must be sensed for
continuous trip delay before the relay de-energizes.
Re-energization is automatic upon fault correction. The output
relay will not energize if a fault condition is sensed as 3-phase
input voltage is applied. The LED alternately flashes red/green
when phase reversal is sensed. Line voltage is selected with
the knob, setting the over and under voltage trip points. Voltage
range is automatically selected by the microcontroller.
LED Indicator
Steady Green Energized
Steady Red De-engergized (tripped on fault)
Flashing Green Trip Delay
Alternate Flashing Red/Green Phase Reversal
Features & Benefits
FEATURES BENEFITS
Quick octal 8-pin
mounting
Small footprint with universal mounting: ideal
replacement for hundreds of competitive
part numbers.
Proprietary
microcontroller
based circuitry
Constant monitoring of single-phase, low voltage,
high voltage, voltage unbalance, phase reversal.
LED diagnostics
Quick visual indicator for cause of trip. LED
indications include: normal operation, trip delay,
phase reversal, fault
Isolated, 10A, SPDT
output contacts Allows control of loads for AC voltages
Simple 3-wire connection
for delta or wye systems Allows flexibility across wide range of systems
ASME A17.1 Rule 210.6 Complies with safety codes for elevators,
escalators, moving walkways
NEMA MG1 14:30, 14:35 Complies with safety codes for motors
and generators
IEEE C62.41-1991 Level B Complies with safety codes for surge and
voltage protection
Wiring Diagram
F = Fuses
ØA = Phase A = L1
ØB = Phase B = L2
ØC = Phase C = L3
NO = Normally Open
NC = Normally Closed
2A fast acting fuses
recommended for safety
(not required).
Relay contacts are isolated
8-PIN
Littelfuse.com/plmu11
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 32.
246 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/plmu11
PLMU11
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8-pin or 11-pin plug-in timers,
flashers, and other controls.
OT08PC Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated at
10A @ 600VAC. Surface mounted with two #6
screws or snaps onto a 35 mm DIN rail.
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 Vac/500 Vdc
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Specifications
Line Voltage
Type 3-phase delta or wye with no connection
to neutral
Line Voltage 200 to 480VAC ±15%, 50/60 Hz ±2 Hz
Adjustable Voltage Ranges
(Automatic Range Selection) 200 to 240VAC, 50/60 Hz
340 to 420VAC, 50 Hz
400 to 480VAC, 60 Hz
Maximum Voltage 552VAC
Phase Sequence ABC
Power Consumption ≤ 5W
Overvoltage, Undervoltage,
& Voltage Unbalance
Type Voltage detection with delayed trip and
automatic reset
Overvoltage & Undervoltage
Undervoltage Trip Point 88 - 92% of adjusted line voltage
Reset Voltage +2% of trip voltage
Overvoltage Trip Point 109 - 113% of adjusted line voltage
Reset Voltage -2% of trip voltage
Voltage Unbalance Trip Point Adjustable from 2 - 10%
Reset on Balance (%)
Selected Unbalance 2 3 4 5 6 7 8 9 10
Reset 1.5 2.5 3.5 4.5 5.4 6.3 7.2 8.1 9
Trip Delay Range Adjustable from 0.25 - 30s
Severe Unbalance -
2X Selected Unbalance 0.25 - 2s; disabled when the trip delay is
less than 2s
Random Start Delay ≅ 0.6s
Phase Reversal & Phase
Loss Trip Time ≤ 150ms
Phase Loss Setpoint ≥ 15% unbalance
Reset Type Automatic
Output Type Energized when voltages are acceptable
Type Electromechanical relay
Form Isolated, SPDT
Rating 10A resistive @ 240VAC; 1/4 hp @ 125VAC;
1/3 hp @ 250VAC; max. 277VAC
Life Mechanical - 1 x 106
; Electrical - 1 x 105
Protection
Surge IEEE C62.41-1991 Level B
Isolation Voltage ≥ 2500V RMS input to output
Mechanical
Mounting* Plug-in socket rated 600VAC
Termination Octal 8-pin plug-in
Dimensions H 77.0 mm (3.03”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Weight ≅ 8.6 oz (244 g)
*CAUTION: Select an octal socket rated for 600VAC operation.
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 247
Protection Relays
Voltage Monitoring Relays
PLM SERIES
Voltage Monitor
Description
The PLM Series is a 3-phase voltage monitor that continuously
monitors each of the three phases. Monitors both delta and
wye systems and no connection to neutral is required. The
microcontroller circuit design protects against undervoltage,
voltage unbalance, phase loss and phase reversal. Protection is
assured when regenerated voltages are present.
Operation
The output relay is energized and the LED glows green
when all voltages are acceptable and the phase sequence is
correct. Under and unbalanced voltages must be sensed for a
continuous trip delay period before the relay de-energizes. Reset
is automatic upon correction of the fault condition. The output
relay will not energize if a fault condition is sensed as power is
applied. The LED flashes red during the trip delay, then glows
red when the output de-energizes. The LED flashes green/red if
phase reversal is sensed.
Field Adjustment
Set voltage adjustment knob at the desired operating line
voltage for the equipment. This adjustment automatically sets
the undervoltage trip point. Apply power. If the PLM fails to
energize, (LED glows red) check wiring of all three phases,
voltage, and phase sequence. If phase sequence is incorrect,
the LED flashes green/red. To correct this, swap any two
line voltage connections at the mounting socket. No further
adjustment should be required.
Features & Benefits
FEATURES BENEFITS
Quick octal 8-pin
mounting
Small footprint with universal mounting: ideal
replacement for hundreds of competitive
part numbers.
Proprietary
microcontroller
based circuitry
Constant monitoring of single-phase, low voltage,
high voltage, voltage unbalance, phase reversal.
LED diagnostics Quick visual indicator for trip versus
normal operation.
Isolated, 10A, SPDT
output contacts Allows control of loads for AC voltages
Adjustable nominal
voltage set point
Allows setting for specific application
voltage to optimize protection
Simple 3-wire connection
for delta or wye systems Allows flexibility across wide range of systems
ASME A17.1 Rule 210.6 Complies with safety codes for elevators,
escalators, moving walkways
NEMA MG1 14:30, 14:35 Complies with safety codes for motors
and generators
IEEE C62.41-1991 Level B Complies with safety codes for surge and
voltage protection
Ordering Information
MODEL LINE VOLTAGE VOLTAGE
UNBALANCE (FIXED) TRIP DELAY (FIXED)
PLM6405 240VAC 4% 5 sec
PLM6502 240VAC 5% 2 sec
PLM6805 240VAC 8% 5 sec
PLM8405 380VAC 4% 5 sec
PLM9405 480VAC 4% 5 sec
PLM9502 480VAC 5% 2 sec
PLM9805 480VAC 8% 5 sec
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
F = Fuses
ØA = Phase A = L1
ØB = Phase B = L2
ØC = Phase C = L3
NO = Normally Open
NC = Normally Closed
2A fast acting fuses
recommended for safety
(not required).
Relay contacts are isolated
8-PIN
Littelfuse.com/plm
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 512, Figure 23.
248 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/plm
PLM SERIES
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- pin or 11-pin plug-in timers,
flashers, and other controls.
OT08PC Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated at
10A @ 600VAC. Surface mounted with two #6
screws or snaps onto a 35 mm DIN rail.
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 Vac/500 Vdc
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Specifications
Line Voltage
Type 3-phase delta or wye with no connection
to neutral
Operating Voltage
Model Adj. Line
Voltage Range Line Voltage Max
240 200-240VAC 270VAC
380 360-430VAC 480VAC
480 400-480VAC 530VAC
AC Line Frequency 50/100 Hz
Phase Sequence ABC
Power Consumption ≅ 2W for 240V units
≅ 3W for 380 - 480V units
Low Voltage &
Voltage Unbalance
Type Voltage detection with delayed
trip & automatic reset
Low Voltage
Trip 88 - 92% of adjusted line voltage
Reset Voltage Plus 3% of trip voltage
Voltage Unbalance
Trip Factory fixed from 4 - 8%
Reset on Balance -0.7% unbalance typical
Trip Delay
Range Factory fixed from 2 - 20s
Tolerance ±15%
Phase Reversal & Phase Loss
Response Time ≤ 200ms
Phase Loss > 35% unbalance
Reset Automatic
Output
Type Electromechanical relay
Form Isolated, SPDT
Rating 10A resistive @ 240VAC, 277VAC max;
1/2 Hp @ 240VAC; 1/4 Hp @ 120VAC
Life Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Surge IEEE C62.41-1991 Level B
Isolation Voltage ≥ 2500V RMS input to output
Mechanical
Mounting* 8-pin plug-in socket rated 600VAC
Dimensions H 81.3 mm (3.2”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Weight ≅ 4.4 oz (125 g)
*CAUTION: Select an octal socket rated for 600VAC operation.
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 249
Protection Relays
Voltage Monitoring Relays
TVW SERIES
Description
The TVW Series Provides protection for motors and other
sensitive loads. Continuously measures the voltage of each
of the three phases using a microcontroller circuit design
that senses under and overvoltage, voltage unbalance, phase
loss, and phase reversal. Protection is provided even when
regenerated voltages are present. Includes a trip delay to
prevent nuisance tripping and a restart delay to prevent short
cycling after a momentary power outage.
Operation
Upon application of line voltage, the restart delay begins.
The output is de-energized during restart delay. Under normal
conditions, the output energizes after the restart delay.
Undervoltage, overvoltage, and voltage unbalance must be
sensed for the complete trip delay period before the output
de-energizes. The restart delay begins as soon as the output
de-energizes. If the restart delay is completed when a fault is
corrected, the output energizes immediately. The output will not
energize if a fault is sensed as the input voltage is applied. If the
voltage selector is set between two voltage marks (i.e. between
220 and 230V), the LED will flash red rapidly. The TVW provides
fault protection at the lower of the two line voltages (i.e. 220V).
Reset: Reset is automatic upon correction of a fault.
LED Operation
The LED flashes green during the restart delay, then glows
green when the output energizes. It flashes red during the trip
delay then glows red when the output de-energizes. It flashes
red/green if phase reversal is sensed. If the voltage selector
knob is between settings, it rapidly flashes red.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller based
circuitry
Constant monitoring to protect against phase loss,
phase reversal; over, under, and unbalanced voltage;
short cycling
Compact design
measures 2 in.
(50.8mm) square
Perfect for OEM applications where cost, size and
ease of installation are important
LED indication Provides diagnostics of relay, fault and time
delay status
Encapsulated Protects against shock, vibration and humidity
Ordering Information
MODEL LINE VOLTAGE VOLTAGE
UNBALANCE TRIP DELAY RESTART
DELAY
TVW5103S5S 208 to 240VAC
Selectable Fixed, 10% Fixed, 3s Fixed, 5s
TVW575S1M 208 to 240VAC
Selectable Fixed, 7% Fixed, 5s Fixed, 1m
TVW6510S0.4S 208, 220, 230,
240VAC Fixed, 5% Fixed, 10s Fixed, 0.4s
TVW8510S0.4S 380, 400 &
415VAC Fixed, 5% Fixed, 10s Fixed, 0.4s
TVW9510S0.4S 430, 440, 460,
480VAC Fixed, 5% Fixed, 10s Fixed, 0.4s
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
L1 = Phase A
L2 = Phase B
L3 = Phase C
NO = Normally Open
NC = Normally Closed
C = Common, Transfer Contact
Relay contacts are isolated.
F = 2A Fast acting fuses are
recommended, but not required
Littelfuse.com/tvw
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 514, Figure 44.
250 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/tvw
TVW SERIES
Accessories
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 Vac/500 Vdc
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick
Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
VRM6048 Voltage Reduction Module
Allows the voltage monitor to monitor a 3-phase
550 to 600VAC Line.
Specifications
Line Voltage
Type 3-phase delta or wye with no connection
to neutral
Input Voltage/Tolerance 208 to 480VAC in 4 ranges/-30% - 20%
AC Line Frequency 50 - 100 Hz
Phase Sequence ABC
Power Consumption Approx. 2W for 240V units
Approx. 3W for 480V units
Overvoltage, Undervoltage,
& Voltage Unbalance
Overvoltage & Undervoltage Voltage detection with delay trip &
automatic reset
Undervoltage Trip Point 88 - 92% of the selected line voltage
Reset Voltage ≅ +3% of trip voltage
Overvoltage Trip Point 109 - 113% of the selected line voltage
Reset Voltage ≅ -3% of trip voltage
Trip Variation vs Temperature ≤ ±2%
Voltage Unbalance Factory fixed, from 4 - 10%
Reset On Balance ≅ -0.7% unbalance
Trip Delay Range Fixed from 0.2 - 100s ±15% or ±0.1s,
whichever is greater
Restart Delay Range Fixed from 0.4s - 999m ±15% or ±0.2s,
whichever is greater
Phase Reversal & Phase
Loss Response ≤ 200ms; automatic reset
Phase Loss ≥ 25% unbalance
Output
Type Isolated, SPDT
Rating
208 to 240VAC (55°C) 10A resistive @ 125VAC, 5A @ 250VAC,
1/4 hp @ 125VAC
380 to 480VAC 10A resistive @ 240VAC, 1/4 hp @ 125VAC,
1/3 hp @ 250VAC, max. voltage 277VAC
Life Mechanical - 1 x 106
; Electrical - 1 x 105
Protection
Phase Reversal/Failure ASME A17.1 Rule 210.6
Motors and Generators NEMA MG1 14:30, 14:35
Surge IEEE C62.41-1991 Level B
Dielectric Breakdown
208 to 240VAC ≥ 1500V RMS input to output terminals
380 to 480VAC ≥ 2500V RMS input to output terminals
Mechanical
Mounting Surface mount with one #8 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 31.75 mm (1.25”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 55°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.8 oz (79 g)
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 251
Protection Relays
Voltage Monitoring Relays
TVM SERIES
Description
The TVM Series Provides protection for motors and other
sensitive loads. Continuously measures the voltage of each
of the three phases using a microcomputer circuit design
that senses under and overvoltage, voltage unbalance, phase
loss, and phase reversal. Protection is provided even when
regenerated voltages are present. Includes a trip delay to
prevent nuisance tripping and a restart delay to prevent short
cycling after a momentary power outage.
Operation
Upon application of line voltage, the restart delay begins.
The output relay is de-energized during restart delay. Under
normal conditions, the output energizes after restart delay.
Undervoltage, overvoltage, and voltage unbalance must be
sensed for continuous trip delay period before the output is
de-energized. The output will not de-energize if a fault is
corrected during the trip delay. The restart delay begins as
soon as the output relay de-energizes. If the restart delay is
completed when the fault is corrected, the output relay will
energize immediately.
The output relay will not energize if a fault or phase reversal is
sensed as 3-phase input voltage is applied.
Reset: Reset is automatic upon correction of a fault.
LED Operation
The LED flashes green during the restart delay, then glows
green when the output energizes. It flashes red during the trip
delay then glows red when the output de-energizes. It flashes
red/green if phase reversal is sensed.
Features & Benefits
FEATURES BENEFITS
Proprietary
microcontroller based
circuitry
Constant monitoring to protect against phase loss,
phase reversal; over, under, and unbalanced voltage;
short cycling
Compact design
measures 2 in.
(50.8mm) square
Perfect for OEM applications where cost, size and
ease of installation are important
LED indication Provides diagnostics of relay, fault and time
delay status
Encapsulated Protects against shock, vibration and humidity
Ordering Information
MODEL LINE
VOLTAGE
VOLTAGE
UNBALANCE
TRIP
DELAY
RESTART
DELAY
TVM208A100.5S3S 208VAC 10% 0.5s 3s
TVM230A101S1S 230VAC 10% 1s 1s
TVM460A41S5M 460VAC 4% 1s 5m
TVM460A75S2M 460VAC 7% 5s 2m
TVM480A45S5S 480VAC 4% 5s 5s
TVM480A100.5S3S 480VAC 10% 0.5s 3s
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
L1 = Phase A
L2 = Phase B
L3 = Phase C
NO = Normally Open
NC = Normally Closed
C = Common, Transfer Contact
Relay contacts are isolated.
F = 2A Fast acting fuses are
recommended, but not required
Littelfuse.com/tvm
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 514, Figure 44.
252 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/tvm
TVM SERIES
Accessories
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 Vac/500 Vdc
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
VRM6048 Voltage Reduction Module
Allows the voltage monitor to monitor a 3-phase
550 to 600VAC Line.
Specifications
Line Voltage
Type 3-phase delta or wye with no connection
to neutral
Input Voltage 208 to 480VAC
AC Line Frequency 50 - 100 Hz
Phase Sequence ABC
Power Consumption Approx. 2W for 240V units
Approx. 3W for 480V units
Overvoltage, Undervoltage,
& Voltage Unbalance
Overvoltage & Undervoltage Voltage detection with delay trip &
automatic reset
Undervoltage Trip Point 88 - 92% of the selected line voltage
Reset Voltage ≅ +3% of trip voltage
Overvoltage Trip Point 109 - 113% of the selected line voltage
Reset Voltage ≅ -3% of trip voltage
Trip Variation vs Temperature ≤ ±2%
Voltage Unbalance Factory fixed from 4 - 10%
Reset On Balance ≅ -0.7% unbalance
Trip Delay Range Fixed from 0.2 - 100s ±15% or ±0.1s,
whichever is greater
Restart Delay Range Fixed from 0.5s - 999m ±15% or ±0.2s,
whichever is greater
Phase Reversal & Phase
Loss Response ≤ 200ms; automatic reset
Phase Loss ≥ 25% unbalance
Output
Type Isolated SPDT relay contacts
Rating
208 to 240VAC (55°C) 10A resistive @ 125VAC, 5A @ 250VAC,
1/4 hp @ 125VAC
380 to 480VAC 10A resistive @ 240VAC, 1/4 hp @ 125VAC,
1/3 hp @ 250VAC, max. voltage 277VAC
Life Mechanical - 1 x 106
; Electrical - 1 x 105
Protection
Phase Reversal/Failure ASME A17.1 Rule 210.6
Motors and Generators NEMA MG1 14:30, 14:35
Surge IEEE C62.41-1991 Level B
Dielectric Breakdown
208 to 240VAC ≥ 1500V RMS input to output terminals
380 to 480VAC ≥ 2500V RMS input to output terminals
Mechanical
Mounting Surface mount with one #8 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 31.75 mm (1.25”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 55°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.8 oz (79 g)
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 253
Protection Relays
Voltage Monitoring Relays
PLR SERIES
Description
The PLR Series provides a cost effective means of preventing
3-phase motor startup during adverse voltage conditions. Proper
A-B-C sequence must occur in order for the PLR’s output
contacts to energize. In addition, the relay will not energize
when an undervoltage or phase loss condition is present. The
PLR Series protects a motor against undervoltage operation.
The adjustment knob sets the undervoltage trip point.
Operation
The output relay is energized and the LED glows when all
voltages are acceptable and the phase sequence is correct.
Undervoltage must be sensed for a continuous dropout delay
period before the relay de-energizes. Reset is automatic upon
correction of the fault condition. The output relay will not
energize if a fault condition is sensed as power is applied.
Field Adjustment: Turn the adjustment knob fully
counterclockwise and apply three-phase power. The LED should
be ON. Increase adjustment until the LED goes OFF. Decrease
adjustment until LED glows again. If nuisance tripping occurs,
decrease the adjustment slightly.
NOTE: When properly adjusted and operating in an average system, a voltage unbalance of 10%
or more is required for phase loss detection. When a phase is lost while the motor is running, a
voltage will be induced into the open phase nearly equal in magnitude to the normal phase-tophase voltage. This condition is known as regeneration. When regenerated voltages are present,
the voltage unbalance during single phasing may not exceed 10% for some motors. The PLR
Series may not provide protection under this condition. For systems that require superior phase
loss protection, select the PLMU Series.
Features & Benefits
FEATURES BENEFITS
Continuous monitoring Prevents 3-phase motor startup when undervoltage
or phase loss condition is present
Industry standard 8-pin
octal plug connection Eliminates need for special connectors
LED indication Quick visual indication of output status and correct
phase sequence
Ordering Information
MODEL LINE VOLTAGE
PLR120A 95 to 140VAC
PLR240A 190 to 270VAC
PLR380A 340 to 450VAC
PLR480A 380 to 500VAC
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
F = Fuses
ØA = Phase A = L1
ØB = Phase B = L2
ØC = Phase C = L3
NO = Normally Open
NC = Normally Closed
Relay contacts are isolated
2A fast acting fuses recommended for
safety (not required).
8-PIN
Littelfuse.com/plr
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 512, Figure 23.
254 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/plr
PLR SERIES
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
OT08PC Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated at
10A @ 600VAC. Surface mounted with two #6
screws or snaps onto a 35 mm DIN rail.
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 Vac/500 Vdc
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Specifications
Line Voltage
Type 3-phase delta or wye with no connection
to neutral
Nominal Voltage Undervoltage
Dropout Adj. Range Line Voltage Max.
120VAC 85 to 130VAC 143VAC
240VAC 170 to 240VAC 270VAC
380VAC 310 to 410VAC 480VAC
480VAC 350 to 480VAC 530VAC
AC Line Frequency 50/60Hz
Phase Sequence ABC
Response Times
Pull-in ≤ 400ms
Drop-out ≤ 100ms
Hysterisis
Pull-in/Drop-out ≅ 2%
Output
Type Electromechanical relay, energized when all
voltages are acceptable
Form SPDT
Rating 5A resistive @ 240VAC, 1/4 Hp @ 120VAC
Maximum Voltage 250VAC
Protection
Phase Reversal/Failure ASME A17.1 Rule 210.6
Motors and Generators NEMA MG1 14:30, 14:35
Surge IEEE C62.41-1991 Level B
Isolation Voltage
120 & 240VAC ≥ 1500V RMS input to output
380 & 480VAC ≥ 2500V RMS input to output
Mechanical
Dimensions H 81.3 mm (3.2”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Mounting* Plug-in socket
Termination Octal 8-pin, plug-in
Environmental
Operating/Storage
Temperature 0° to 55°C / -40° to 85°C
Weight ≅ 6 oz (170 g)
*CAUTION: Select an octal socket rated for 600VAC operation.
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 255
Protection Relays
Voltage Monitoring Relays
PLS SERIES
Description
The PLS Series is a low cost phase sensitive control that
provides an isolated contact closure when the proper A-B-C
phase sequence is applied. Protects sensitive 3-phase
equipment and equipment operators from reverse rotation.
Designed to be compatible with motor overloads or other
3-phase equipment protection devices. Protection for equipment
control centers where frequent reconnection or electrical code
makes reverse rotation protection essential. Examples include:
mobile refrigerated containers, construction equipment, hoists,
pumps, conveyors, elevators and escalators.
Operation
The internal relay and LED are energized when the phase
sequence is correct. The output relay will not energize if the
phases are reversed. Reset is automatic upon correction of
the fault.
Features & Benefits
FEATURES BENEFITS
Continuous monitoring
Cost effective protection of 3-phase equipment and
operators from reverse rotation. Meets reverse
rotation protection code requirements.
Universal motor
compatibility
Designed to be compatible with motor overloads or
other 3-phase equipment protection devices
Industry standard 8-pin
octal plug connection Eliminates need for special connectors
Factory calibrated Easy to install. No field adjustment needed
LED indicator Provides visual indication of relay status
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated at
10A @ 6 00VAC. Surface mounted with two #6
screws or snaps onto a 35 mm DIN rail.
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 Vac/500 Vdc
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Ordering Information
MODEL LINE VOLTAGE
PLS120A 120VAC
PLS240A 208/240VAC
PLS480A 440/480VAC
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
F = Fuses
ØA = Phase A = L1
ØB = Phase B = L2
ØC = Phase C = L3
NO = Normally Open
NC = Normally Closed
Relay contacts are isolated
2A fast acting fuses recommended for
safety (not required).
8-PIN
Littelfuse.com/pls
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 513, Figure 33.
256 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/pls
PLS SERIES
Specifications
Line Voltage
Type 3-phase delta or wye with no connection
to neutral
Nominal Minimum Maximum
Voltage Voltage Voltage
120VAC 95VAC 135VAC
208/240VAC 175VAC 255VAC
380/415VAC 310VAC 430VAC
440/480VAC 380VAC 500VAC
AC Line Frequency 50/60Hz
Phase Sequence ABC
Response Times
Pull-in ≤ 300ms
Drop-out ≤ 50ms
Output
Type Electromechanical relay, energized when the
phase sequence is correct
Form Isolated SPDT
Rating
120 & 240VAC 10A resistive @ 240VAC
380 & 480VAC 8A resistive @ 240VAC
Maximum Voltage 250VAC
Protection
Isolation Voltage
120 & 240VAC ≥ 1500V RMS input to output
380 & 480VAC ≥ 2500V RMS input to output
Mechanical
Mounting* Plug-in socket
Dimensions H 81.3 mm (3.2”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Termination Octal 8-pin plug-in
Environmental
Operating/Storage
Temperature -40°to 55°C / -40° to 85°C
Weight ≅ 6 oz (170 g)
*CAUTION: Select an octal socket rated for 600VAC operation.
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 257
Protection Relays
Voltage Monitoring Relays
HLVA6I23
Single-Phase Monitor
Description
The HLVA6I23 is a single-phase undervoltage monitor designed
to protect sensitive equipment from brownout or undervoltage
conditions. Time delays are included to prevent nuisance tripping
and short cycling. The 30A, 1hp rated, SPDT relay contacts
allow direct control of motors, solenoids and valves. The output
relay can be ordered with isolated SPDT contact to allow
monitoring of one voltage and switching a separate voltage.
Two undervoltage trip point ranges allow monitoring of 110 to
120VAC or 208 to 240VAC systems.
Operation
Upon application of input voltage the output relay remains
de-energized. When the input voltage value is above the pull-in
voltage, the restart delay begins. At the end of the restart delay,
the output relay energizes. When the input voltage falls below
the trip point, the trip delay begins. If the input voltage remains
below the pull-in voltage for the entire trip delay the relay deenergizes. If the input voltage returns to a value above the pull-in
voltage, during the trip delay, the trip delay is reset and the relay
remains energized. If the input voltage falls below the trip point
voltage during the restart delay, the delay is reset and the relay
remains de-energized. Reset is automatic upon correction of an
undervoltage fault.
Reset: Removing input voltage resets the output relay and the
time delays.
Features
J 30A, SPDT, NO output contacts
J 100 to 240VAC input voltage
J 70 to 220VAC adjustable undervoltage trip point in 2 ranges
J Restart delays from 3 - 300s
J Trip delay 1 - 20s fixed
J Isolated or non-isolated relay contacts
Wiring Diagram
V = Voltage
NO = Normally Open
NC = Normally Closed
C = Common
T1 = Undervoltage Trip Point
T2 = Restart Delay
L1 N/L2
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Littelfuse.com/hlva6i23
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 512, Figure 17.
258 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/hlva6i23
HLVA6I23
Specifications
Input
Min & Max RMS Voltage 70 to 264VAC
AC Line Frequency 50/60 Hz
Power Consumption AC ≤ 4VA
Undervoltage Sensing
Type Peak voltage sensing
Ranges
(4) 70 to 120VAC
(6) 170 to 220VAC
Pull-In Voltage 105% or trip point voltage
Trip Point Accuracy ± 3% of trip point
Time Delay
Restart Delays 3 - 300s adjustable
Trip Delay 1 - 20s fixed in 1s increments
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ±5%
Reset Time ≤ 150ms
Time Delay vs. Temp.
& Voltage ≤ ±10%
Output
Type Electromechanical relay
Form SPDT
Ratings SPDT-NO SPDT-NC
General Purpose 125/240VAC 30A 15A
Resistive 125/240VAC 30A 15A
28VDC 20A 10A
Motor Load 125VAC 1 hp* 1/4 hp**
240VAC 2 hp** 1 hp**
Life Mechanical - 1 x 106
Electrical - 1 x 105
, *3 x104
, **6,000
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output; isolated units
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 76.7 mm (3”); W 51.3 mm (2”);
D 38.1 mm (1.5”)
Termination 0.25 in. (6.35 mm) male quick connects
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
tr = Restart Delay
td = Trip Delay
PI = Pull-in 105% or
trip point
TP = Trip Point
V = Monitored Voltage
IV = Input voltage
C-NO = Normally Open
Contacts
C-NC = Normally Closed
Contacts
PI
TP
V
C-NO
C-NC
IV
Function Diagram
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 259
Protection Relays
Voltage Monitoring Relays
Littelfuse.com/kvm
KVM SERIES
Description
The KVM Series is a single-phase undervoltage monitor designed
to protect sensitive equipment against brownout undervoltage
conditions. The compact design and encapsulated construction
make the KVM Series an excellent choice for OEM equipment.
Operation
The output relay is energized and the LED glows green when
the input voltage is above the reset voltage threshold. If the
input voltage drops below the undervoltage setpoint, the output
relay and LED will de-energize. The output relay will remain
de-energized as long as the input voltage is below the reset
voltage. Reset is automatic when the input voltage returns to a
normal range.
Features & Benefits
FEATURES BENEFITS
Continuous monitoring Low cost single-phase undervoltage
(brownout) protection
Compact design
measures 2 in.
(50.8mm) square
Perfect for OEM applications where, cost, size and
ease of installation are important
LED indication Quick visual indication of output status
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Wiring Diagram
L1 N/L2
V = Voltage
L = LED
S = Undervoltage
Setpoint
NO = Normally Open
NC = Normally Closed
C = Common, Transfer
Contact
Ordering Information
MODEL MAXIMUM LINE VOLTAGE UNDERVOLTAGE SETPOINT
KVM4 132VAC Adjustable, 78 to 99VAC
KVM6 264VAC Adjustable, 156 to 199VAC
If you don’t find the part you need, call us for a custom product 800-843-8848
AC SYSTEM MONITORS/LOAD SENSORS
9
For dimensional drawing see: Appendix, page 512, Figure 16.
260 © 2022 Littelfuse, Inc.
Protection Relays
Voltage Monitoring Relays
KVM SERIES
Specifications
Line Voltage
Type Single phase
Input Voltage 110 to 120VAC or 220 to 240VAC
AC Line Frequency 50/60 Hz
Power Consumption 2.5W @ 132VAC; 4.5W @ 264VAC
Power Off Reset Time ≤ 150ms
Undervoltage Detection
Undervoltage Setpoint
KVM4 78 to 99VAC
KVM6 156 to 199VAC
Undervoltage Reset Point
KVM4 Fixed at 104VAC
KVM6 Fixed at 209VAC
Repeatability ± 0.5% under fixed conditions
±1% over temperature range
Voltage Sensing Accuracy ±2% at 25°C
Output
Type Electromechanical relay
Form SPDT
Rating 8A resistive @ 120VAC, 1/3 hp @ 120/240VAC
Life Mechanical - 1 x 106
; Electrical - 1x105
LED Indicator Glows green when output is energized
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ minimum
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating /Storage
Temperature -25 to 55°C / -40 to 85°C
Humidity 95% relative, non-condensing
Weight 2.6 oz (74 g)
Function Diagram
TP = Undervoltage
Setpoint
R = Reset Point
Littelfuse.com/kvm
AC SYSTEM MONITORS/LOAD SENSORS
9
© 2022 Littelfuse, Inc. 261 Littelfuse.com/relayscontrols
Protection Relays
REMOTE INDICATION & MONITORING
10
REMOTE INDICATION & MONITORING
Improve safety for service and operations personnel by allowing control
and monitoring of the relay without opening the electrical cabinet.
RM1000 Series Remote Monitor ................................................. 262
RM2000 Series Remote Monitor ................................................. 264
Informer Remote Diagnostics Tool.................................... 266
Informer-MS Remote Diagnostics Tool.................................... 268
262 © 2022 Littelfuse, Inc.
Protection Relays
Remote Indication and Monitoring
REMOTE INDICATION & MONITORING
10
Littelfuse.com/rm1000
RM1000 SERIES
Description
The RM1000 Series is a motor-monitoring device to be used
in conjunction with the 777 family of products (excluding the
P1 Series), 77C family of products and the 601 voltage
monitors, via Modbus protocol with a communications module.
The RM1000/777 motor management system combines
unsurpassed electronic motor protection and critical,
user-friendly, motor monitoring.
The RM1000 Series can monitor up to 16 MotorSaver® and/or
PumpSaver® units through an RS-485 network using Modbus
RTU protocol. A second communication port allows monitoring
and control of up to 99 MotorSaver® and/or PumpSaver® units
from a computer, PLC, DCS or SCADA system and can be
accessed from the host computer or PLC with the RM1000
acting as a repeater for any of its motor protectors. In addition
to the monitoring functions, the RM1000 can be used to reset a
tripped MotorSaver® or PumpSaver®.
The RM1000 Series is easily mounted remotely and improves
safety for service and operations personnel by allowing them
to control and monitor the device without opening the electrical
cabinet. Using the RM1000 is a simple, cost-effective method
for aiding compliance with arc flash safety regulations. The
enclosure and keypad assembly is water and ultraviolet light
resistant. The enclosure is NEMA 3R or NEMA 4X (optional)
rated. The RM1000 and RM1000 NEMA 4 also carry a UL Type
12 rating, whereas the RM1000-3R does not carry the UL Type
12 rating due to added weep holes. The added weep holes in
the RM1000-3R make it suitable for applications subjected to
condensing moisture/humidity.
Remote Monitor
Wiring Diagram
Ordering Information
MODEL DESCRIPTION
RM1000 NEMA 3R and/or UL Type 12
RM1000-3R NEMA 3R
RM1000 NEMA 4 NEMA 4X
For dimensional drawing see: Appendix, page 508, Figure 4.
© 2022 Littelfuse, Inc. 263
Protection Relays
Remote Indication and Monitoring
REMOTE INDICATION & MONITORING
10
RM1000 SERIES
Features
Displays:
J Individual line currents and average current
J Current and voltage unbalance
J Individual phase voltages and average voltage
J Displays last four faults, trip reason, and restart timer status
J MotorSaver® and/or PumpSaver® setpoints
J Run-hours on each motor
J Warning of pending (imminent) faults
Controls:
J Reset run-hour meter
J Reset MotorSaver® or PumpSaver®
J Change setpoints from the RM1000
Convenience:
J Power from RS485MS-2W communications module
J Monitor up to 16 777s with one display
J NEMA 3R outdoor rated
J Secondary steel enclosure available
Accessories
RS485-RS232 Converter with cable & plug
Allows RS485 devices to be connected to a PC
via the RS232 (serial) port. Provides convenient
terminal blocks for making signal and DC power
supply connections. Pre-wired.
RS485-USB
Converter with cable & plug/RS232:USB
Allows RS485 devices to be connected to a PC
via the USB port. Provides convenient terminal
blocks for making signal and DC power supply
connections. Pre-wired.
RM1000 ENCL
Steel enclosure for protecting the RM1000
remote communications monitor from adverse
affects of weather and vandalism, while allowing
normal communications connections to the
RM1000 unit.
Solutions Software: Solutions-M
Software features include data logging, real-time
data monitoring and fault and event monitoring.
Specifications
Input Characteristics
Control Power 12-24VDC (Supplied by RS485MS-2W)
Functional Characteristics
Communication Port #1 for 777(s) Port #2 for PC, PLC, etc.
Baud Rate 1200-28800 1200-28800
Setup None, Odd, or None, Odd, or
Even Parity Even Parity
1 or 2 Stop Bits 1 or 2 Stop Bits
Protocol Modbus RTU Modbus RTU
Serial Interface RS-485 RS-485
Available Addresses 1-99 addresses Responds to all port #1
(max 16 per
RM1000)
Mechanical Life 100,000 actuations
Overlay Material Polyester
UV Exposure w/o degradation 2000 hrs
Terminal Torque (depluggable
terminal block) 3 in.-lbs.
Panel Thickness 0.03” min, 0.12” max
General Characteristics
Ambient Temperature Range
Operating -40° to 70°C (-40° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Maximum Input Power 100mA
Class of Protection
RM1000, RM1000 NEMA 4 NEMA 3R and/or UL Type12,
NEMA 4X (optional)
RM1000-3R NEMA 3R only
Relative Humidity Up to 85%, non-condensing
Safety Marks
UL UL508 (File #E68520)
CSA 22.2 No. 14 (File #46510)
CE IEC 60947-6-2
Enclosure Material Black polycarbonate
Display Liquid Crystal with extended temp. range
Size 2 rows x 16 characters
Keypad Six 0.5” stainless steel dome buttons for
tactile feedback
Dimensions H 91.92 mm (3.62”); W 115.42 mm (4.54”);
D 22.86 mm (0.9”)
Weight 1.5 lbs. (24 oz., 680.39 g)
Mounting Method Surface mountable on backplane using
4 screws
Littelfuse.com/rm1000
264 © 2022 Littelfuse, Inc.
Protection Relays
Remote Indication and Monitoring
REMOTE INDICATION & MONITORING
10
Littelfuse.com/rm2000
RM2000 SERIES
Description
The RM2000 Series is a motor-monitoring device to be used
in conjunction with the 777 family of products (excluding the
P1 Series), 77C family of products and the Model 601 voltage
monitors, via Modbus protocol with a communications module.
The RM2000/777 motor management system combines
unsurpassed electronic motor protection and critical, userfriendly, motor monitoring.
The RM2000 has membrane keypad controls which allow both
monitoring and control of a 777 MotorSaver® through an RS-485
network using Modbus RTU protocol. A second communication
port allows monitoring and control of up to 99 RM2000 devices
from a PLC, DCS, or SCADA system or a PC with Solutions
software installed. The RM2000 will act as a repeater for its
motor protector when accessed from the host computer or
PLC. In addition to the monitoring functions, the RM2000 can
be used to reset a tripped MotorSaver® or PumpSaver®.
The RM2000 is easily mounted remotely and improves safety
for service and operations personnel by allowing them to control
and monitor the device without opening the electrical cabinet.
Using the RM2000 is a simple, cost-effective method for aiding
compliance with arc flash safety regulations. The enclosure and
keypad assembly is water and ultraviolet light resistant.
Remote Monitor
Wiring Diagram
Ordering Information
MODEL DESCRIPTION
RM2000 Remote display monitor for
777 family relays
RM2000-CBM+
Coal Bed Methane Special.
Optimizes gas production from
coal bed methane wells while
protecting submersible pump
RM2000-RTDW Includes additional input for
ground-fault module For dimensional drawing see: Appendix, page 508, Figure 5.
© 2022 Littelfuse, Inc. 265
Protection Relays
Remote Indication and Monitoring
REMOTE INDICATION & MONITORING
10
RM2000 SERIES
Features
Displays:
J Average current, individual line currents and current unbalance
J Current to ground
J Average voltage, line-line voltages and voltage unbalance
J Instantaneous power
J Power factor
J Last four faults
J All parameters programmed into 777 MotorSaver®
J Remaining restart delay times
Controls:
J Start and stop buttons
J Key lock input to prevent setpoint changes
J Change 777 setpoints from keypad
The RM2000 is also equipped with a real-time clock, which
allows access to the following motor management information
(most readings can be reset):
J Total motor run-time
J Time and date of last four faults, along with voltage and
current at time of trip
J Time and date of last 10 motor starts
J Total number of motor restarts
J Minimum time between any two starts with time and date
J Run-time since last start
J kWh consumed
J kVARs consumed
Accessories
RS485-RS232 Converter with cable & plug
Allows RS485 devices to be connected to a PC
via the RS232 (serial) port. Provides convenient
terminal blocks for making signal and DC power
supply connections. Pre-wired.
RS485-USB
Converter with cable & plug/RS232:USB
Allows RS485 devices to be connected to a PC
via the USB port. Provides convenient terminal
blocks for making signal and DC power supply
connections. Pre-wired.
Solutions Software: Solutions-M
Software features include data logging, real-time
data monitoring and fault and event monitoring.
Specifications
Input Characteristics
Control Voltage 115VAC ±10%; 50/60Hz
Transient Protection
(Internal) 2500V for 10ms
Functional Characteristics
Communication Port #1 for 777 Port #2 for PC, PLC, etc.
Baud Rate 1200-28800 1200-28800
Setup Even Parity None, Odd, or Even Parity
1 Stop Bit 1 or 2 Stop Bits
Protocol Modbus RTU Modbus RTU
Serial Interface RS-485 RS-485
Available Addresses 01 A01-A99
Real-time Clock
Battery Back-up Life 10 years @ 25°C without external power
Last fault memory Stores up to 4 faults with time and date stamp,
includes voltages and currents at time of trip
Configuration Two independent electro-mechanical
Form C (SPDT)
Contact Material Silver/Tin Oxide
Output Characteristics
(RM2000-RTDW version only)
Pilot Duty Rating 240VA @ 120VAC
General Purpose Rating 5A @ 120VAC
General Characteristics
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -30° to 70°C (-22° to 158°F)
Maximum Input Power 3 W
Class of Protection NEMA 3R and/or UL Type 12
Relative Humidity Up to 85%, non-condensing
Safety Marks
UL UL508 (File #E68520)
CSA C22.2 No. 14 (File #46510)
CE IEC 60947-6-2
Enclosure
Material Black polycarbonate
Display Liquid crystal with extended temp. range
Size 2 rows x 20 characters
Lighting LED Backlight
Keypad Eight 0.5” stainless steel dome buttons for
tactile feedback
Mechanical Life 100,000 actuations
Overlay Material Polyester
UV Exposure
w/o degradation 2000 hrs.
Terminal Torque
(depluggable terminal block) 3 in.-lbs.
Dimensions H 162.56 mm (6.4”); W 154.94 mm (6.1”);
D 27.94mm (1.1”)
Weight 1.2 lbs. (19.2 oz., 544.31 g)
Mounting Method Surface mountable on backplane using
4 screws
Littelfuse.com/rm2000
266 © 2022 Littelfuse, Inc.
Protection Relays
Remote Indication and Monitoring
REMOTE INDICATION & MONITORING
10
Littelfuse.com/informer
INFORMER
Description
The Informer is a hand-held diagnostic tool designed for
use with single-phase models equipped with infrared LED
transmitters (111-Insider-P; 231-Insider-P; 232-Insider; 111P;
233P; 233P-1.5; 234-P and 235P).
The Informer uses an infrared receiver to access information
sent from the relay which can be helpful for troubleshooting
the system.
Each Littelfuse single-phase model listed above is equipped with
an infrared LED that transmits valuable information from the
device. To retrieve this information, the Informer’s receiver must
be directed toward the unit’s LED transmitter and be within 8
feet of the unit. The green COMM STATUS light indicates when
the Informer is receiving data from the unit. If communication
is lost, the Informer will display the last values it received. The
Informer will automatically shut off after 2 minutes of non-use.
An infrared adapter (IR Kit-12) is included with all new and
updated Informers. This adapter allows communication with
the unit without opening the panel door (for select models).
Features & Benefits
The Informer displays:
J Model number
J Real-time voltage, current, and power
J Drywell and overload trip points
J Calibration voltage
J Restart delay setpoint and restart delay time remaining
J CT size (if applicable)
J Number of pump starts
J Total run-time
J Fault history for last 20, most recent, faults
J Voltage, current, power, and run-time for each fault at time of
the fault
J Highest and lowest voltage and current since last calibration
Accessories
Informer IR Kit-12
12” infrared adapter cable attaches to the face of
the unit to provide remote diagnostics without
opening the panel. Included with the Informer
Remote Diagnostic Tool for use with
Single-Phase Pump Relays
For dimensional drawing see: Appendix, page 510, Figure 9.
© 2022 Littelfuse, Inc. 267
Protection Relays
Remote Indication and Monitoring
REMOTE INDICATION & MONITORING
10
INFORMER
Specifications
Functional Characteristics
Power
Input 9 Volts DC
(requires one 9-volt alkaline battery)
Auto Shut-off 2 minutes
Communication
Signal Infrared
Range 1-8 ft. (approx. 0.25 ft. when using IR Kit)
Data Update 4 seconds
General Characteristics
Temperature Range 0 to 60°C (32° to 140°F)
Accuracy
Voltage ±2%
Current ±2%
Power ±4%
Maximum Input 0.25 W
Resolution
Voltage 1.0VAC
Display Liquid crystal
Size 2 rows x 16 characters
Keypad Three 0.5” diameter buttons
Mechanical Life 100,000 actuations min.
Overlay Material Polyester
Enclosure
Dimensions H 139.70 mm (5.50”); W 91.44 mm (3.60”);
D 28.70 mm (1.13”)
Weight 0.375 lb. (6 oz., 170.10 g) (w/out battery);
0.70 lb. (11.2 oz., 317.51 g) (total package)
Material Black ABS 94HB
Littelfuse.com/informer
268 © 2022 Littelfuse, Inc.
Protection Relays
Remote Indication and Monitoring
REMOTE INDICATION & MONITORING
10
Littelfuse.com/informerms
INFORMER-MS
Remote Diagnostic Tool for use with the 455
3-Phase, Dual-Range Voltage Monitor
Description
The Informer-MS is a hand-held diagnostic tool designed for use
with the Littelfuse 455.*
The Informer-MS uses an infrared receiver to read valuable
information transmitted from the 455*, which can be helpful
for troubleshooting the system. A green communication status
light indicates the Informer-MS is receiving data from the 455.
If communication is lost, the Informer-MS will display the last
values it received.
*Model 455s manufactured after 03/01/06 are equipped with the infrared LED transmitter.
Models manufactured prior to this date are not compatible with the Informer-MS.
An infrared adapter (IR Kit-36) can be purchased to allow communication with the Model 455
without opening the panel door.
Features
The Informer-MS displays:
J Real-time, line and load side voltage
J Real-time, line and load side voltage unbalance
J Motor run hours
J Last 20 faults
J Last 32 motor starts
J High and low voltage trip points
J Voltage unbalance trip point
J Restart and trip delay settings
J Voltage at last fault
J Communication status LED
J Auto shut off
J Last fault with trip conditions
Accessories
Informer IR Kit-36
36” infrared adapter cable attaches to the face
of the model 455 to provide remote diagnostics
without opening the panel.
Specifications
Functional Characteristics
Power
Input 9 Volts DC
(requires one 9-volt alkaline battery)
Consumption 0.25 Watt (max.)
Auto Shut-off 2 minutes
Communication
Signal Infrared
Range 1-8 ft. (approx. 0.25 ft. when using IR Kit)
Data Update 4 seconds
General Characteristics
Temperature Range 0 to 60°C (32° to 140°F)
Accuracy
Voltage ±2%
Maximum Input 0.25 W
Resolution
Voltage 1.0VAC
Voltage Unbalance 1%
Time 1 minute increments
Trip Delay 2 second increments
Restart Delay 2 second increments
Display (liquid crystal)
Size 2 rows x 16 characters
Keypad
(three 0.5” dia. buttons)
Mechanical Life 100,000 actuations min.
Overlay Material Polyester
Enclosure
Dimensions H 139.70 mm (5.50”); W 91.44 mm (3.60”);
D 28.70 mm (1.13”)
Weight 0.375 lb. (6 oz., 170.10 g) (w/out battery);
0.70 lb. (11.2 oz., 317.51 g) (total package)
Material Black ABS 94HB
For dimensional drawing see: Appendix, page 510, Figure 9.
© 2022 Littelfuse, Inc. 269
Protection Relays
Littelfuse.com/relayscontrols
COMMUNICATION MODULES
RS485MS-2W Communication Module................................. 270
CIO-MB/CIO-120-MB Communication Module................................. 271
CIO-DN-P/
CIO-120-DN-P Devicenet™ Interface .................................... 273
CIO-777-PR Profibus Interface........................................... 275
CIO-EN Modbus-TCP and Modbus-RTU Interface...... 276
COM 4-20 Output Module for use with
Model 777-AccuPower .................................. 277
COMMUNICATION MODULES
11
270 © 2022 Littelfuse, Inc.
Protection Relays
Communication Modules
Littelfuse.com/rs485ms2w
RS485MS-2W
Description
The RS485MS-2W is required to enable the Modbus
communications function on Model 77x-type products. This
module is required when the RM1000, RM2000 or other
Modbus capable device is used with 77x-type products.
Features
J Optical isolation from line potentials
J Powered by the 77x product
J RS-485 compliant bus drive capability
J Remote reset input connection
J Power connection for the Model RM1000
Accessories
RS485-RS232 Converter with cable & plug
Allows RS485 devices to be connected to a PC
via the RS232 (serial) port. Provides convenient
terminal blocks for making signal and DC power
supply connections. Pre-wired.
RS485-USB
Converter with cable & plug/RS232:USB
Allows RS485 devices to be connected to a PC
via the USB port. Provides convenient terminal
blocks for making signal and DC power supply
connections. Pre-wired.
Communication Module
Wiring Diagram
Up to a Max Distance of 4000 ft, use
18 - 24 AWG Shielded Twisted Pair
9-Pin
SUB-D
Connector
Modbus
Master
with
RS-485
Port
Model 777,
77C, 601
Model 777,
77C, 601
Model 777,
77C, 601
RS485MS-2W Module
RS485MS-2W
Module
RS485MS-2W
Module
Figure 1: Typical RS-485 Network
120
Ohm
100 Ohm
120
Ohm
A B S
A B S
A
B
A
B
S
A
B
S
Typical RS-485 Network TYPICAL RS485 NETWORK
Refer to the manual for basic and extended network diagrams.
Specifications
Functional Specifications
Remote Reset (for optional
use with 777 Series) Normally open pushbutton rated 24VDC,
10mA (min.)
General Characteristics
Ambient Operating
Temperature -20° to 50°C (-4° to 122°F)
Terminal (depluggable
terminal block)
Torque 3 in.-lbs. (max.)
Wire AWG 12-20 AWG
Class of Protection IP20
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity, Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input power
Hi-Potential Test Meets UL508 (2 x rated V + 1000V for 1 min)
Surge
Input Power IEC 61000-4-5, Level 1
Inputs/Data Lines IEC 61000-4-5, Level 2
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947
Enclosure Polycarbonate
Dimensions H 52.83 mm (2.08”); W 73.66 mm (2.9”);
D 19.56 mm (.77”)
Weight 0.26 lb. (4.16oz., 117.93 g)
Mounting Method 9-pin D-Sub connector on the side of a
777-Series
COMMUNICATION MODULES
11
For dimensional drawing see: Appendix, page 507, Figure 2.
© 2022 Littelfuse, Inc. 271
Protection Relays
Communication Modules
Littelfuse.com/ciomb-cio120mb
CIO-MB / CIO-120-MB
Description
The CIO-MB/CIO-120-MB Modules are convenient and
cost-effective Modbus-RTU interfaces capable of providing
discrete control and monitoring of an overload relay over a
Modbus network.
Features & Benefits
FEATURES BENEFITS
Compact size
3.46” H x 1.0” W x 5.0” D
Easily adapts to existing as well as
new applications
Flexible addressing
standard allows function
as stand-alone interface
or in conjunction with
777 series overload relay
Provides flexibility for control and monitoring
Remote reset option Additional remote reset input allows user to reset
777 series relays without opening the panel
DIN rail or surface
mountable Allows installation flexibility
Unpluggable terminal
block connections
Allows user to wire terminal blocks before installing
the module and reduces field wiring
Specifications
Functional Specifications
Remote Reset (for use with
optional 777 Series) Normally open pushbutton rated 24VDC,
10mA (min.)
Power Requirements:
Voltage 24VDC +10%
Current 95mA (max.) 70mA (typical)
Power 2.28 W (max.) 1.7 W (typical)
Ethernet Controller IEEE 802.3
Capability 10Base-T
Input Characteristics
General Purpose (4)
Voltage Range:
CIO-MB 12-24VDC
CIO-120-MB 90-130VAC
Current 2mA (typical)
Output Characteristics
SPDT (1), SPST (1)
Pilot Duty 480VA & 240VAC, B300
General Purpose 5A @ 240VAC
General Characteristics
Ambient Operating
Temperature -20° to 70°C (-4° to 158°F)
Terminal (depluggable
terminal block)
Torque 3 in.-lbs. (max.)
Wire AWG 12-20 AWG
Class of Protection IP20, NEMA 1 (finger safe)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Communication Link to PLC/SCADA/
Monitoring Systems
Ordering Information
MODEL LINE VOTAGE
CIO-MB 12 to 24VDC
CIO-120-MB 90 to 130VAC
FIGURE 1: Typical Wiring Diagram (CIO-MB)
FIGURE 2: Typical Wiring Diagram (CIO-120-MB)
Wiring Diagram
TYPICAL WIRING FOR CIO-MB
TYPICAL WIRING FOR CIO-120-MB
COMMUNICATION MODULES
11
For dimensional drawing see: Appendix, page 507, Figure 3.
272 © 2022 Littelfuse, Inc.
Protection Relays
Communication Modules
Littelfuse.com/ciomb-cio120mb
CIO-MB / CIO-120-MB
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity,
Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input power
Hi-Potential Test Meets UL508 (2 x rated V + 1000V for 1 min)
Surge
Input Power IEC 61000-4-5, Level 1
Inputs/Data Lines IEC 61000-4-5, Level 2
Safety Marks
UL UL508 (File #E68520)
CSA C22.2 (File #46510)
CE IEC 60947-6-2
Enclosure Polycarbonate
Dimensions H 86.36 mm (3.40”); W 25.40 mm (1.00”);
D 138.68 mm (5.46”)
(w/depluggable connectors)
Weight 0.25 lb. (4 oz., 113.4 g)
Mounting Methods DIN Rail or surface mount (w/two #8 screws)
COMMUNICATION MODULES
11
© 2022 Littelfuse, Inc. 273
Protection Relays
Communication Modules
CIO-DN-P / CIO-120-DN-P
Description
The CIO-DN-P/CIO-120-DN-P are convenient and cost-effective
Devicenet™ interfaces capable of providing discrete control and
monitoring of motor starters, drives and other devices over a
Devicenet™ network.
Features & Benefits
FEATURES BENEFITS
Compact size
3.4” H x 1.0” W x 5.46” D
Easily adapts to existing as well as
new applications
Flexible addressing
standard allows function
as stand-alone interface
or in conjunction with
777 series overload relay
Provides flexibility for control and monitoring
Remote reset option Additional remote reset input allows user to reset
777 series relays without opening the panel
DIN rail or surface
mountable Allows installation flexibility
Unpluggable terminal
block connections
Allows user to wire terminal blocks before installing
the module and reduces field wiring
Communication Link to PLC/SCADA/
Monitoring Systems
Wiring Diagram
Ordering Information
MODEL LINE VOTAGE
CIO-DN-P 12 to 24VAC
CIO-120-DN-P 90 to 130VAC
TYPICAL WIRING FOR CIO-120-DN-P
FIGURE 2: Typical Wiring Diagram (CIO-120-DN-Px)
IND. CONT. EQ.
LISTED
784X
®
DEVICENET MODULE/NETWORK STATUS
OVERLOAD COMM. STATUS
R R C I1 I2 I3 I4 1 2 3 4 5
PILOT DUTY RATING
480VA @ 240 VAC, B300
5A @ 240VAC
GENERAL PURPOSE
SCREW TORQUE RATING 0.5 Nm (5 in-lbs.)
DEPLUGGABLE
TERMINAL BLOCKS
115VAC OUTPUT
A
OUTPUT
B
REMOTE
RESET
DEVICENET
NETWORK
V +
CAN H
SHEILD
CAN L
VREMOTE
RESET
OUTPUT A OUTPUT B
INPUTS 1-4 115VAC
AC COMMON
TYPICAL WIRING FOR CIO-DN-P
FIGURE 1: Typical Wiring Diagram (CIO-DN-Px, CIO-601CS-DN-P1)
DEPLUGGABLE
TERMINAL BLOCKS
DIGITAL INPUTS
OUTPUT A OUTPUT B
REMOTE RESET
DEVICENET
NETWORK
V+
CAN H
SHEILD
CAN L
VLISTED
784X
®
REMOTE
RESET
DEVICENET MODULE/NETWORK STATUS
OVERLOAD COMM. STATUS
R R C I1 I2 I3 I4 1 234 5
CIO-DN DeviceNet Communication and I/O
PILOT D UTY RATING
480VA @ 240VAC, B300
5A @ 240VAC
GENERAL PURPOSE
DIGITAL
INPUTS
OUTPUT A OUTPUT B
SCREW TORQUE RATING 0.5 Nm (5 in.-lbs.)
IND. CONT. EQ.
Littelfuse.com/ciodnp-cio120dnp
COMMUNICATION MODULES
11
For dimensional drawing see: Appendix, page 507, Figure 3.
274 © 2022 Littelfuse, Inc.
Protection Relays
Communication Modules
Littelfuse.com/ciodnp-cio120dnp
CIO-DN-P / CIO-120-DN-P
Specifications
Input Characteristics
Power Requirements
Voltage (nominal) 24VDC
Current 137mA (max.)
Power 3.28 W (max.)
Digital Inputs
Voltage Range
CIO-DN-P 12-24 VAC
CIO-120-DN-P 90-130VAC
Frequency 50/60Hz
Maximum Current 2mA (typical)
Remote Reset 24VDC, 10mA (min.), NO pushbutton
Output Characteristics
Form A & Form C Contactors
Pilot Duty 480VA @ 240VAC, B300
General Purpose 5A @ 240VAC
General Characteristics
Temperature Range -20° to 70°C (-4° to 158°F)
Relative Humidity 10-95%, non-condensing
Wire Gauge Solid or stranded, 12-20 AWG
Terminal Torque 3 in.-lbs.
Hi-Potential Test
(relays to other circuits) (2 x rated V + 1000V for 1 minute)
EMC Standards
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency Immunity,
Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input power
Safety Marks
UL, ULC Listed, CSA UL508 (File #E68520), C22.2 (File #46510)
Enclosure Polycarbonate
Dimensions H 86.36 mm (3.4”); W 25.4 mm (1.0”);
D 138.68 mm (5.46”)
(w/depluggable connectors)
Weight 0.25 lb. (4 oz., 113.4 g) (w/depluggable connectors)
Mounting Methods DIN Rail or surface mount (w/two #8 screws)
COMMUNICATION MODULES
11
© 2022 Littelfuse, Inc. 275
Protection Relays
Communication Modules
Littelfuse.com/cio777pr
CIO-777-PR
Description
The CIO-777-PR Module is a convenient and cost-effective
Profibus interface capable of providing discrete control and
monitoring of motor starters, drives and other devices over a
Profibus network.
Features & Benefits
FEATURES BENEFITS
Compact size
3.4” H x 1.0” W x 5.46” D
Easily adapts to existing as well as
new applications
Flexible addressing
standard allows function
as stand-alone interface
or in conjunction with
777 series overload relay
Provides flexibility for control and monitoring
Remote reset option Additional remote reset input allows user to reset
777 series relays without opening the panel
DIN rail or surface
mountable Allows installation flexibility
Built in sub-D connector Provides a quick and easy connection to a network
and reduces field wiring
Communication Link to PLC/SCADA/
Monitoring Systems
FIGURE 1: Typical Wiring Diagram
DEPLUGGABLE
TERMINAL BLOCK
PROFIBUS
SUB-D CONNECTOR
PROFIBUS NETWORK
VA
SHIELD
B
V+
IN D. COT. NE Q.
LI STE D
784X
¨
PROFIBUS NETWORK S TATUS
OVERLOAD COMM. S TATUS
CIO-E777-PR PROFIBUS Communication
SCREW TORQUERATING 0.5 Nm (5.0 in.-lbs.)
Wiring Diagram
Specifications
Input Characteristics
Power Requirements
Voltage (nominal) 12-24VDC
Current 150mA (max.)
Power 3.6 W (max.)
Digital Inputs
Voltage Range 12-24VAC
Maximum Current 2mA (typical)
Remote Reset 24VDC, 10mA, (min.), NO pushbutton
Output Characteristics
Form A & Form C Contactors
Pilot Duty 480VA @ 240VAC, B300
General Purpose 5A @ 240VAC
General Characteristics
Ambient Temperature Range
Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Wire Gauge Solid or stranded, 12-20 AWG
Terminal Torque 3 in.-lbs.
Hi-Potential Test
(relays to other circuits) Meets UL508 (2 x rated V + 1000V for 1 min.)
EMC Standards
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity, Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input power
Safety Marks
UL, ULC Listed UL508 (File #E68520)
CSA C22.2 (File #46510)
Enclosure Polycarbonate
Dimensions H 86.36 mm (3.4”); W 25.4 mm (1.0”);
D 138.68 mm (5.46”)
(w/depluggable connectors)
Weight 0.25 lb. (4 oz., 113.4 g)
(w/depluggable connectors)
Mounting Methods DIN Rail or surface mount (w/ two #8 screws)
COMMUNICATION MODULES
11
For dimensional drawing see: Appendix, page 507, Figure 3.
276 © 2022 Littelfuse, Inc.
Protection Relays
Communication Modules
Littelfuse.com/cioen
CIO-EN
Description
The CIO-EN Module (non-POE) is a convenient and costeffective Modbus-TCP and Modbus-RTU interface capable of
providing discrete control and monitoring of an overload relay
over a Modbus network.
Features & Benefits
FEATURES BENEFITS
Compact size
3.4” H x 1.0” W x 5.46” D
Easily adapts to existing as well as
new applications
Flexible addressing
standard allows function
as stand-alone interface
or in conjunction with
777 series overload relay
Provides flexibility for control and monitoring
Remote reset option Additional remote reset input allows user to reset
777 series relays without opening the panel
DIN rail or surface
mountable Allows installation flexibility
Built in Ethernet jack Reduces field wiring
Communication Link to PLC/SCADA/
Monitoring Systems
Wiring Diagram
Specifications
Input Characteristics
Power Requirements:
Voltage 24VDC +10%
Current 95mA (max.) 70mA (typical)
Power 2.28 W (max.) 1.7 W (typical)
Digital Inputs
General Purpose (4)
Voltage Range 12-24VDC
Current 2mA (typical)
Functional Specifications
Remote Reset (for use with
optional 777 Series) Normally open pushbutton rated 24VDC,
10mA (min.)
Ethernet Controller IEEE 802.3
Capability 10Base-T
Output Characteristics
SPDT (1), SPST (1)
Pilot Duty 480VA & 240VAC, B300
General Purpose 5A @ 240VAC
General Characteristics
Ambient Operating
Temperature -20° to 70°C (-4° to 158°F)
Terminal (depluggable
terminal block)
Torque 3 in.-lbs. (max.)
Wire AWG 12-20 AWG
Class of Protection IP20, NEMA 1 (finger safe)
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity, Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input power
Hi-Potential Test Meets UL508 (2 x rated V + 1000V for 1 min)
Surge
Input Power IEC 61000-4-5, Level 1
Inputs/Data Lines IEC 61000-4-5, Level 2
Safety Marks
UL UL508 (File #E68520)
CSA C22.2 (File #46510)
CE IEC 60947-6-2
Enclosure Polycarbonate
Dimensions H 86.36 mm (3.4”); W 25.4 mm (1.0”);
D 138.68 mm (5.46”)
Weight 0.25 lb. (4 oz., 113.4 g)
Mounting Methods DIN Rail or surface mount (w/two #8 screws)
COMMUNICATION MODULES
11
For dimensional drawing see: Appendix, page 507, Figure 3.
© 2022 Littelfuse, Inc. 277
Protection Relays
Communication Modules
Littelfuse.com/com420
COM 4-20
Description
The COM 4-20 Output Module is intended for use with ONLY
the Model 777-AccuPower output power monitor. The module
will send a 4-20mA signal proportional to the output power.
It can also be used to send the input power by setting the
efficiency setting on the 777-AccuPower monitor to one.
This module allows communication to a PLC with an analog
input and no Modbus input.
Features
J Powered by the 777-AccuPower
J Scalable 4-20mA output proportional to Hp or kW
J Signal can be used for displays, controllers, or PLCs
Communication Link to PLC/SCADA/
Monitoring Systems
Figure 6. 4-20mA Output Module Wiring Diagram
Wiring Diagram
4-20mA OUTPUT MODULE
Specifications
Output Characteristics
Current 4-20mA
General Characteristics
Temperature Range -20° to 50°C (-4° to 122°F)
Terminal (depluggable
terminal block)
Torque 3 in.-lbs. (max.)
Wire AWG 12-20 AWG
Class of Protection IP20
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Standards Passed
Electrostatic Discharge IEC 61000-4-2, Level 3, 6kV contact, 8kV air
Radio Frequency
Immunity, Radiated 150 MHz, 10V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input power
Hi-Potential Test Meets UL508 (2 x rated V + 1000V for 1 min)
Surge
Input Power IEC 61000-4-5, Level 1
Inputs/Data Lines IEC 61000-4-5, Level 2
Safety Marks
UL UL508 (File #E68520)
CE IEC 60947
Enclosure Polycarbonate
Dimensions H 52.83 mm (2.08”); W 73.66 mm (2.9”);
D 19.56 mm (0.77”)
Weight 0.25 lb. (4 oz., 113.4 g)
Mounting Method #8 screws; mount to side of
777-AccuPower unit
COMMUNICATION MODULES
11
For dimensional drawing see: Appendix, page 507, Figure 2.
278 © 2022 Littelfuse, Inc.
Time Delay Relays
Littelfuse.com/relayscontrols
Timer Function Guide ......................................................................... 280
Multifunction
TRDU Series....................................................................................... 281
TRU Series.......................................................................................... 283
ASQU / ASTU Series.......................................................................... 286
DSQU / DSTU Series.......................................................................... 288
Dedicated
On Delay
T10 SERIES......................................................................................... 290
Delay-on-Make
ERDM Series...................................................................................... 291
HRDM Series...................................................................................... 293
KRDM Series...................................................................................... 295
KRPS Series........................................................................................ 297
KSD1 Series....................................................................................... 300
KSDU Series....................................................................................... 302
KSPS Series........................................................................................ 304
MSM Series....................................................................................... 307
ORM Series........................................................................................ 309
PRLM Series....................................................................................... 311
TDM / TDMH / TDML Series............................................................. 313
TDU / TDUH / TDUL Series................................................................ 315
TH1 Series.......................................................................................... 317
THD1B410.5S..................................................................................... 319
TMV8000 / TSU2000 Series.............................................................. 321
TRM Series......................................................................................... 323
TS1 Series.......................................................................................... 325
TSD1 Series........................................................................................ 327
Delay-on-Make, Normally Closed
TS441165 ........................................................................................... 329
Delay-on-Break
HRDB Series....................................................................................... 331
HRPS / HRIS Series............................................................................ 333
KRDB Series....................................................................................... 335
KSDB Series....................................................................................... 337
ORB Series......................................................................................... 339
TDB / TDBH / TDBL Series................................................................. 341
TDUB Series....................................................................................... 343
THDB Series....................................................................................... 345
TRB Series.......................................................................................... 347
TSB Series.......................................................................................... 349
TSDB Series....................................................................................... 351
Single Shot
HRDS Series....................................................................................... 353
HSPZA22SL........................................................................................ 355
KRDS Series....................................................................................... 357
KSDS Series....................................................................................... 359
ORS Series......................................................................................... 361
PRS65................................................................................................. 363
TDS / TDSH / TDSL Series................................................................. 365
TDUS Series....................................................................................... 366
THC / THS Series............................................................................... 368
THDS Series....................................................................................... 370
TRS Series.......................................................................................... 372
TSDS Series....................................................................................... 374
TSS Series.......................................................................................... 376
TIME DELAY RELAYS
The largest selection of time delay relays known since 1968 for its reliable designs that provide long service lives with low maintenance costs. Versatile
multifunction time delay relays give you the option of choosing among functions and time delay ranges to ensure that you receive the perfect timer to fit your
needs. Electromechanical relay-output time delay relays are available with a number of different functions and assure isolation between input and output, as
well as no voltage drop across output contact. Solid-state time delay relays have no moving parts to arc and wear out over time, giving them a lifespan of up
to 100x that of a relay-output timer. In addition, all solid state time delay relays are fully encapsulated to protect against shock, vibration, humidity, etc.
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 279
Time Delay Relays
Littelfuse.com/relayscontrols
For More Information…
and to download our HVAC Timer
Application Guide, visit
Littelfuse.com/timedelayrelays
Interval
ERDI Series......................................................................................... 378
HRDI Series........................................................................................ 380
KRDI Series........................................................................................ 382
KSD2 Series....................................................................................... 384
KSPU Series....................................................................................... 386
TDI / TDIH / TDIL Series..................................................................... 388
TDUI / TDUIH / TDUIL Series............................................................. 390
THD2 Series....................................................................................... 392
THD7 Series....................................................................................... 394
TS2 / TS6 Series................................................................................ 396
TSD2 Series........................................................................................ 398
TSD6 Series........................................................................................ 400
TSD7 Series........................................................................................ 402
Retriggerable Single Shot
KRD9 Series....................................................................................... 404
TSD94110SB ...................................................................................... 406
Recyle
ERD3425A .......................................................................................... 407
ESDR Series....................................................................................... 409
HRDR Series....................................................................................... 412
KRD3 Series....................................................................................... 414
KRDR Series....................................................................................... 416
KSD3 Series....................................................................................... 418
KSDR Series....................................................................................... 420
KSPD Series....................................................................................... 422
RS Series............................................................................................ 424
TDR Series.......................................................................................... 426
THD3C42A0........................................................................................ 428
TSD3411S........................................................................................... 430
TSDR Series....................................................................................... 432
Percentage
PTHF4900DK....................................................................................... 434
Dual Function
TDMB Series...................................................................................... 436
ESD52233........................................................................................... 438
KRPD Series....................................................................................... 440
HVAC
CT Series............................................................................................ 442
T2D120A15M..................................................................................... 444
TA Series............................................................................................ 446
TAC1 Series........................................................................................ 448
TL Series............................................................................................. 450
TSA141300......................................................................................... 452
Coin Vending
HRV Series......................................................................................... 453
12 TIME DELAY RELAYS
Time Delay Relays
Function Selection Guide
Selection Questions
1) The timing starts when the initiate (starting) contacts are:
A) Closed B) Opened
2) What is the status of the output (or load) during timing?
A) On B) Off C) On/Off
3) Will the load de-energize (or remain de-energized) if the
initiate (starting) contacts are opened during timing?
A) Yes B) No
THE FIVE MOST USED FUNCTIONS
Understanding Time Diagrams
Time diagrams are used to show the relative operation of
switches, controls, and loads as time progresses. Time begins
at the first vertical boundary. There may be a line indicating the
start of the operation or it may just begin with the transition
of the device that starts the operation. Each row in the time
diagram represents a separate component. These rows will be
labeled with the name of the device or its terminal connection
numbers. In a bistable or digital system, the switches, controls,
or loads can only be ON or OFF. The time lines are drawn to
represent these two possible conditions. Vertical lines are used
to define important starting or ending points in the operation.
The example to the right is the most common type of time
diagram in use in North America. It shows the energizing of
loads, and the closing of switches and contacts by an ascending
vertical transition of the time line. Opening switches or contacts
or de-energizing loads are represented by descending
vertical transitions.
TIME DIAGRAM
Example:
Input Applied
Off
Initiate Switch Closed
Open
Output
(Normally Open)
Energized
De-energized
DELAY-ON-BREAK (RELEASE)
V = Voltage R = Reset S1 = Initiate Switch TD = Time Delay
t = Incomplete Time Delay L = Load = Undefined Time
International Timing Function Symbols
= Delay-on-Make; ON-delay
= Delay-on-Break; OFF-delay
= Delay-on-Make and Break; ON and OFF-delay
= Interval; Impulse-ON
= Trailing Edge Interval; Impulse-OFF
= Single Shot; Pulse Former
= Flasher - ON Time First; Recycling Equal Times - ON First
= Flasher - OFF Time First; Recycling Equal Times - OFF First
= Recycling - Unequal Times; Pulse Generator
= Recycling - Unequal Times Starting with ON or OFF
= Delay-on-Make and Interval; Single Pulse Generator
Selecting a Timer’s Function
Selecting one of the five most common timing functions can be as easy as answering three questions on the chart below. If you
have trouble answering these questions, try drawing a connection diagram that shows how the timer and load are connected.
Time diagrams and written descriptions of the five most popular functions, plus other common functions. Instantaneous contacts,
accumulation, pause timing functions, and flashing LED’s are included in some units to expand the versatility of the timer. These
expanded operations are explained on the product’s catalog page. Time diagrams are used on these pages along with text and
international symbols for functions.
TIMER FUNCTION GUIDE
12 TIME DELAY RELAYSLittelfuse.com/relayscontrols 280 © 2022 Littelfuse, Inc.
12 TIME DELAY RELAYS
Time Delay Relays
Multifunction
© 2022 Littelfuse, Inc. 281 Littelfuse.com/trdu
TRDU SERIES
Description
The TRDU Series is a versatile universal time delay relay with 21
selectable single and dual functions. The dual functions replace
up to three timers required to accomplish the same function.
Both the function and the timing range are selectable with
switches located on the face of the unit. Two LED’s indicate
input voltage and output status. This device offers full 10A
isolated relay output contacts in either SPDT or DPDT. The
TRDU replaces hundreds of part numbers, thereby, reducing
your stock inventory requirements.
21 Functions
Five switches are provided to set one of 10 single or 11 dual
modes of operation.
Features & Benefits
FEATURES BENEFITS
:
21 timing functions
Replace hundreds of parts and reduce stocking
requirements
Microcontroller based Repeat Accuracy + / - 0.1%
User selectable
time delay
Timing settings are switch selectable 0.1s - 1,705h
in eight ranges for added flexibility
Isolated 10A, SPDT or
DPDT output contacts Allows control of loads for AC or DC voltages
LED indicators Provides visual indication of input voltage and
relay status
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 screws or snaps onto a
35 mm DIN rail. Uses PSC8 hold-down clips.
NDS-11 11-pin Socket
11-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 screws or snaps onto a
35 mm DIN rail. Uses PSC11 hold-down clips.
PSC8 or PSC11 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use PSC8
with NDS-8 Octal Socket or PSC11 with NDS-11
Socket. Sold in sets of two.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
L1 N/L2
V = Voltage
S1 = Initiate Switch
8-PIN DPDT 8-PIN SPDT
11-PIN DPDT
Wiring Diagram
8-PIN
11-PIN
Ordering Information
MODEL INPUT VOLTAGE BASE CONNECTION
TRDU120A1 120VAC 8-pin, DPDT*
TRDU120A2 120VAC 8-pin, SPDT
TRDU120A3 120VAC 11-pin, DPDT
TRDU12D1 12VDC 8-pin, DPDT*
TRDU12D2 12VDC 8-pin, SPDT
TRDU230A2 230VAC 8-pin, SPDT
TRDU24A1 24VAC/DC 8-pin, DPDT*
TRDU24A2 24VAC/DC 8-pin, SPDT
TRDU24A3 24VAC/DC 11-pin, DPDT
If you don’t find the part you need, call us for a custom product 800-843-8848
*Limited to 9 operating functions in 8-pin DPDT units.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 20.
Time Delay Relays
Multifunction
282 © 2022 Littelfuse, Inc.
TRDU SERIES
Specifications
Time Delay
Type Microcontroller
Range: Switch Selectable** Single Functions: 0.1s - 1,705h in 8 ranges
Dual Functions: 0.1s - 3,100m each in 8 ranges
Adjustments Multiplier: 3 position DIP switches select
0.1, 1, 10, or 100 in s or m
Setting Accuracy ±1% or 50ms, whichever is greater
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Timing Functions Five switches are provided to set one of
twenty-one single or dual functions
Reset Time ≤ 50ms
Initiate Time 120VAC: 75ms
Time Delay vs Temp.
& Voltage ±1%
Indication
Two LEDs indicate 1) Input voltage applied 2) Output relay status
Input
Voltage 12VDC, 24VAC/DC, 120VAC, or 230VAC
Tolerance
12VDC & 24VAC/DC -15% - 20%
120 & 230VAC -20% - 10%
AC Line Frequency 50/60Hz
Power Consumption 24 to 230V ≤ 3W; 12VDC ≤ 2W
Output
Type Electromechanical relay
Form SPDT or DPDT
Rating 10A resistive @ 120/240VAC & 28 VDC;
1/3 hp @ 120/240VAC
Life Mechanical – 1 x 107
; Electrical – 1 x 106
Protection
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Plug-in socket
Dimensions H 76.7 mm (3.1”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Termination Octal 8-pin plug-in or magnal 11-pin plug-in
Environmental
Operating/Storage
Temperature -20° to 65°C / -40° to 85°C
Weight ≅ 5.8 oz (164 g)
**For CE approved applications, power must be removed from the unit when a switch position
is changed.
Function Diagrams
DELAY-ON-BREAK
RECYCLE (ON TIME
FIRST, EQUAL DELAYS)
DELAY-ON-MAKE/DELAY-ON-BREAK
DELAY-ON-MAKE/INTERVAL
DELAY-ON-MAKE / RECYCLE
(ON TIME FIRST)
Single Functions Dual Functions
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SINGLE SHOT DELAY-ON-MAKE / SINGLE SHOT
*
* *
12 * TIME DELAY RELAYSLittelfuse.com/trdu
Time Delay Relays
Multifunction
© 2022 Littelfuse, Inc. 283
TRDU SERIES
TRAILING EDGE SINGLE SHOT
(IMPULSE-OFF)
INVERTED DELAY-ON-BREAK
INVERTED SINGLE SHOT
DELAY-ON-BREAK / RECYCLE
(ON TIME FIRST)
SINGLE SHOT / RECYCLE
(ON TIME FIRST)
US
Single Functions Dual Functions
* 9 Functions included in the 8 pin DPDT models
5 Switches for
Function Selection
3 Switches for Time
Delay Range
V = Voltage
R = Reset
S1 = Initiate Switch
NO = Normally Open Contact
NC = Normally Closed Contact
TD,TD1,TD2 = Complete Time Delay
t = Partial Time Delay
DOM = Delay-on-Make
DOB = Delay-on-Break
REC = Recycle
SS = Single Shot
INT = Interval
M = Minutes
S = Seconds
= Undefined time
NOTE: The time delay range is the same for both functions when dual functions are selected.
ACCUMULATIVE
DELAY-ON-MAKE
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSD)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
t = Incomplete
Time Delay
TD = Time Delay
R = Reset
ACCUMULATIVE
DELAY-ON-MAKE / INTERVAL
KEY LEGEND
Both Times Adjustable
Both Times Adjustable
INTERVAL* INTERVAL / RECYCLE
(ON TIME FIRST)
*
RECYCLE (ON TIME FIRST)*
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally Open CoNC = Normally
Closed CTD1, TD2 = TimR = Reset
*
INTERVAL / DELAY-ON-MAKE*
Littelfuse.com/trdu
12 TIME DELAY RELAYS
Time Delay Relays
Multifunction
284 © 2022 Littelfuse, Inc.
Description
The TRU Series is a multifunction, knob adjustable, Universal
Time Delay Relay. It includes six of the most popular timing
functions selected by a slide switch. The time delay is knob
adjustable and the time delay range is switch selectable.
The repeat accuracy is + 0.1%. Both function and time range
can be selected on the top face of the unit. In addition to
multifunctioning and multiple time ranges, the TRU Series
features universal input voltage; 19 to 264VAC and 19 to 30VDC
and full 10A output relay. The TRU Series can directly replace up
to 1000 competitive time delay relay models.
Operation
A six position slide switch selects delay-on-make, interval,
single shot, recycling (ON time first, equal recycle delays),
delay-on-break, and retriggerable single shot. 8-pin DPDT
base wiring is limited to delay-on-make, interval, and recycling
functions. All six functions are available in the 8-pin SPDT and
11-pin DPDT versions.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.1% or + / - 20ms, whichever
is greater
6 time ranges
(0.1s to 1,000m) Broad range will satisfy most requirements
Knob adjustable
time delay
Allows user to fine tune time delay based on
application needs
Universal input voltage Makes it versatile for use in most applications
Multifunction Provides the most common standard
timing functions
LED Indicators Provide visual indication of input voltage and
relay status
10A isolated
output contacts Allows control of loads for AC or DC voltages
TRU SERIES
Knob Adjustable Universal Time Delay Relay
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE BASE WIRING FUNCTIONS
TRU1 19 to 264VAC; 19 to 30VDC 8-pin DPDT 3
TRU2 19 to 264VAC; 19 to 30VDC 8-pin SPDT 6
TRU3 19 to 264VAC; 19 to 30VDC 11-pin DPDT 6
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
L1 N/L2
L1 N/L2
8-PIN SPDT
Delay-on-Make
Interval
Single Shot
Recycling
(ON Time First, Equal
Recycle Delays)
Delay-on-Break
Retriggerable Single Shot
11-PIN DPDT
Delay-on-Make
Interval
Single Shot
Recycling
(ON Time First, Equal
Recycle Delays)
Delay-on-Break
Retriggerable Single Shot
8-PIN DPDT
Delay-on-Make
Interval
Recycling
V = Voltage
S1 = Initiate Switch
Relay contacts
are isolated
8-PIN
11-PIN
12 TIME DELAY RELAYSLittelfuse.com/tru
For dimensional drawing see: Appendix, page 512, Figure 21.
Time Delay Relays
Multifunction
© 2022 Littelfuse, Inc. 285
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated
at 10A @ 300VAC. Surface mounted with two
#6 (M 3.5 x 0.6) screws or snaps onto a 35 mm
DIN rail. Uses PSC8 hold-down clips.
NDS-11 11-pin Socket
11-pin 35mm DIN rail or surface mount. Rated
at 10A @ 300VAC. Surface mounted with two
#6 (M 3.5 x 0.6) screws or snaps onto a 35 mm
DIN rail. Uses PSC11 hold-down clips.
PSC8 or PSC11 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use PSC8
with NDS-8 Octal Socket or PSC11 with NDS-11
Socket. Sold in pairs.
Function Diagram
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSD)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
t = Incomplete
Time Delay
TD = Time Delay
R = Reset
Specifications
Time Delay
Type Digital integrated circuitry
Range
Switch Selectable 0.1s - 1000m in 6 ranges:
1) 0.1 - 10s
2) 1 - 100s
3) 10 - 1000s
4) 0.1 - 10m
5) 1 - 100m
6) 10 - 1000m
Adjustments
Multiplier 4 position DIP switch selects
x0.1, x1, x10, and sec. or min.
Time Setting Onboard knob adjustment with 1 - 100
reference dial
Two LEDs indicate 1) Input voltage applied
2) Output relay status
Repeat Accuracy ±0.1% or ±20ms, whichever is greater
Reset Time ≤ 300ms
Time Delay vs Temp.
& Voltage ±2%
Input
Voltage - Universal
Input Range 19 to 264VAC and 19 to 30VDC
AC Line Frequency 50/60Hz
Output
Type Electromechanical relay
Form SPDT or DPDT, isolated
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Protection
Transient 38 joules
Isolation Voltage ≥ 1500V RMS input to output
Polarity DC units are reversed polarity protected
Mechanical
Mounting Plug-in socket
Dimensions H 87.3 mm (3.44”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Termination Octal 8-pin plug-in or magnal 11-pin plug-in
Environmental
Operating/Storage
Temperature -20° to 65°C / -30° to 85°C
Weight ≅ 6 oz (170 g)
TRU SERIES
Littelfuse.com/tru
12 TIME DELAY RELAYS
Time Delay Relays
Multifunction
286 © 2022 Littelfuse, Inc.
ASQU ASTU
Description
The ASQU and ASTU Series of 17.5 mm, knob adjustable,
universal solid-state timers offer multiple functions, voltages,
and time delay ranges. Choose one of 5 functions and 4 time
delay ranges via 4 selection switches located on face of the
unit. Adjustment through the time range is accomplished by an
onboard knob.
The ASQU Series has quick connect terminals and the ASTU
Series has terminal blocks.
Features & Benefits
FEATURES BENEFITS
Universal AC or
DC voltage Choose from 24 to 240VAC or 9 to 110VDC models
Compact 17.5mm size Allows for high rail density
Microcontroller based Repeat Accuracy + / -1%
Multifunction:
5 timing functions Reduce stocking requirements
Knob Adjustable
Time Delay Field adjustable delay ranging from 0.1s - 100m
0.7A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Mounting fasteners
Iincluded
Each unit ships with both surface and DIN rail quick
mount adapters
Watchdog circuitry Self monitoring and self correcting for
improved performance
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick
Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P0500-178 Surface Mount Adapter
P0500-179 DIN Rail Mount Adapter
For use with the ASxx/DSxx Series timers.
Ordering Information
MODEL INPUT VOLTAGE CONNECTION
ASQUA3 24 to 240VAC Quick Connects
ASQUD3 9 to 110VDC Quick Connects
ASTUA3 24 to 240VAC Terminal Blocks
ASTUD3 9 to 110VDC Terminal Blocks
If you don’t find the part you need, call us for a custom product 800-843-8848
0.1-10s
1-100s
10-1000s
1-100m
X100s
X10s
X1s
X10m
R M S
D
C
D
C
D
C
D
C
F
E
F
E
F
E
F
E
R = Range
M = Multiplier
S = Setting
L1 N/L2
L1 N/L2
V = Voltage
L = Load
J= Wire Required for
Interval Operation
S1= Initiate Switch
UTL = Optional Untimed Load
DELAY-ON-MAKE & RECYCLING
SINGLE SHOT, INTERVAL &
DELAY-ON-BREAK
DOM
SS
R
DOB
A
A
A
A
B
B
B
B
ADJUSTMENTS
DOM = Delay-on-Make
SS = Single Shot/Interval
R = Recycling
DOB = Delay-on-Break
Wiring & Adjustment Diagrams
L1 N/L2
L1 N/L2
ASQU / ASTU SERIES
12 TIME DELAY RELAYSLittelfuse.com/asqu-astu
For dimensional drawing see: Appendix, page 512, Figure 22.
Time Delay Relays
Multifunction
© 2022 Littelfuse, Inc. 287
Specifications
Time Delay
Type Microcontroller based with ceramic resonator
and watchdog circuitry
Adjustment Knob with dial; 2 switches select
1 of 4 multipliers
Range* 0.1 - 10s, 1 - 100s, 10 - 1000s, 1 - 100m
Repeat Accuracy ±1% or ±50ms, whicheer is greater
Tolerance
(Factory Calibration) ±2% or ±50ms, whichever is greater
Reset Time ≤ 300ms
Initiate Time Single Shot & Delay-on-Break: ≤ 32ms
Time Delay vs Temp.
& Voltage ±2%, or ±50ms, whichever is greater
Input
Voltage AC: 24 to 240VAC; -20% - 10%
DC: 9 to 110VDC; -0% - 20% @ -25°C
9.4 to 110VDC; -0% - 20% @ -40°C
AC Line Frequency/DC Ripple 50/60Hz / ≤ 10%
Output
Type Solid state
Form NO
Rating 0.7A steady state, 10A inrush
Voltage Drop AC ≅ 2.5V @ 0.7A; DC ≅ 1.5V @ 0.7A
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Polarity DC units are reverse polarity protected
Mechanical
Mounting Two base adaptors are available
DIN Rail Snap on to 32 mm DIN 1 & 35 mm DIN 3 rail
Surface Two #6 (M3.5 x 0.6) screws or quick
mount fasteners
Dimensions H 76.2 mm (3.0”); W 17.52 mm (0.69”);
D 61.2 mm (2.41”)
Termination
ASQU 0.25 in. (6.35 mm) male quick
connect terminals
ASTU 0.197 in. (5 mm) push-on terminal blocks for
up to #14 AWG (2.5 mm2
) wire
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 4 oz (113 g)
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
DIN Rail Mount
Inches (Millimeters)
SurfaceQuick MoFastner(2[Drill . 18diameter35mm DIN 3
32MM DIN 1
.815
(20.70)
.640
(16.26)
.38
(9.65
3.00
(76.2)
.23(5P0500-178
SURFACE MOUNT
Inches (Millimeters)
P0500-179
DIN RAIL MOUNT
Inches (Millimeters)
Mounting Diagrams
DIN Rail Mount
Inches (Millimeters)
Surface Mount
Quick Mount
Fastner(2)
[Drill . 187 (4.75)
diameter hole]
35mm DIN 3
32MM DIN 1
.815
(20.70)
.640
(16.26)
.38
(9.65
.185
(4.70)
3.00
(76.2)
2.41
(61.2)
.235 DIA
(5.97)
.69
(17.52)
ASQU / ASTU SERIES
Littelfuse.com/asqu-astu
12 TIME DELAY RELAYS
Time Delay Relays
Multifunction
288 © 2022 Littelfuse, Inc.
DSQU DSTU
1
2
4
8
16
32
ON
Add switches in ON position
TD = 2+8+16=26
L1 N/L2
L1 N/L2
V = Voltage
L = Load
J= Wire Required for
Interval Operation
S1= Initiate Switch
UTL = Optional Untimed Load
DOM
SS
R
DOB
A
A
A
A
B
B
B
B
0.1s
1s
10s
1m
X10s
X1s
X0.1s
X1m
R M S I
D
C
D
C
D
C
D
C
F
E
F
E
F
E
F
E
0.1-6.3s
1-63s
10-630s
1-63m
R = Range
M = Multiplier
S = Setting
I = Increments of time
DOM = Delay-on-Make
SS = Single Shot/Interval
R = Recycling
DOB = Delay-on-Break
Wiring & Adjustment Diagrams
L1 N/L2
L1 N/L2
DELAY-ON-MAKE & RECYCLING
SINGLE SHOT, INTERVAL &
DELAY-ON-BREAK
ADJUSTMENTS
Description
The DSQU and DSTU Series of 17.5 mm, DIP switch adjustable,
universal solid-state timers offer multiple functions, voltages,
and time delay ranges. Choose one of 5 functions and 4 time
delay ranges via 4 selection switches located on face of the unit.
Six switches adjust the time delay through the selected range.
The DSQU Series has quick connect terminals and the DSTU
Series has terminal blocks.
Features & Benefits
FEATURES BENEFITS
Universal AC or
DC voltage Choose from 24 to 240VAC or 9 to 110VDC models
Compact 17.5mm size Allows for high rail density
Microcontroller based Repeat Accuracy + / -1%
Multifunction:
5 timing functions Reduce stocking requirements
DIP switch adjustable
time delay Field adjustable delay ranging from 0.1s - 63m
0.7A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Mounting fasteners
included
Each unit ships with both surface and DIN rail quick
mount adapters
Watchdog circuitry Self monitoring and self correcting for
improved performance
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P0500-178 Surface Mount Adapter
P0500-179 DIN Rail Mount Adapter
For use with the ASxx/DSxx Series timers.
Ordering Information
MODEL INPUT VOLTAGE CONNECTION
DSQUA3 24 - 240VAC Quick Connects
DSQUD3 9 - 110VDC Quick Connects
DSTUA3 24 - 240VAC Terminal Blocks
DSTUD3 9 - 110VDC Terminal Blocks
If you don’t find the part you need, call us for a custom product 800-843-8848
DSQU / DSTU SERIES
12 TIME DELAY RELAYSLittelfuse.com/dsqu-dstu
For dimensional drawing see: Appendix, page 512, Figure 22.
Time Delay Relays
Multifunction
© 2022 Littelfuse, Inc. 289
Specifications
Time Delay
Type Microcontroller based with ceramic resonator
and watchdog circuitry
Adjustment 6 switches adjust the time delay;
2 switches select 1 of 4 multipliers
Range* x0.1s = 0.1 - 6.3s in 0.1s increments
x1s = 1 - 63s in 1s increments
x10s = 10 - 630s in 10s increments
x1m = 1 - 63m in 1m increments
Repeat Accuracy ±0.1% or ±20ms, whichever is greater
Setting Accuracy ±2% or ±50ms, whichever is greater
Reset Time ≤ 300ms
Initiate Time Single Shot & Delay-on-Break: ≤ 32ms
Time Delay vs Temp.
& Voltage ±2% or ±50ms, whichever is greater
Input
Voltage AC: 24 to 240VAC; -20% - 10%
DC: 9 to 110VDC; -0% - 20% @ -25°C
9.4 to 110VDC; -0% - 20% @ -40°C
AC Line Frequency/DC Ripple 50/60Hz / ≤ 10%
Output
Type Solid state
Form NO
Rating 0.7A steady state, 10A inrush
Voltage Drop AC ≅ 2.5V @ 0.7A; DC ≅ 1.5V @ 0.7A
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Polarity DC units are reverse polarity protected
Mechanical
Mounting Two base adaptors are available
DIN Rail Snap on to 32 mm DIN 1 & 35 mm DIN 3 rail
Surface Two #6 (M3.5 x 0.6) screws or quick
mount fasteners
Dimensions H 76.2 mm (3.0”); W 17.52 mm (0.69”);
D 61.2 mm (2.41”)
Termination
DSQU 0.25 in. (6.35 mm) male quick connect
terminals
DSTU 0.197 in. (5 mm) push-on terminal blocks for up
to #14 AWG (2.5 mm2
) wire
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 4.2 oz (119 g)
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
DIN Rail Mount
Inches (Millimeters)
SurfaceQuick MoFastner(2[Drill . 18diameter35mm DIN 3
32MM DIN 1
.815
(20.70)
.640
(16.26)
.38
(9.65
3.00
(76.2)
.23(5P0500-178
SURFACE MOUNT
Inches (Millimeters)
P0500-179
DIN RAIL MOUNT
Inches (Millimeters)
Mounting Diagrams
DIN Rail Mount
Inches (Millimeters)
Surface Mount
Quick Mount
Fastner(2)
[Drill . 187 (4.75)
diameter hole]
35mm DIN 3
32MM DIN 1
.815
(20.70)
.640
(16.26)
.38
(9.65
.185
(4.70)
3.00
(76.2)
2.41
(61.2)
.235 DIA
(5.97)
.69
(17.52)
DSQU / DSTU SERIES
Littelfuse.com/dsqu-dstu
12 TIME DELAY RELAYS
290 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — On Delay
Littelfuse.com/t10
T10 SERIES
Solid-State On-Delay Timer
Description
The T10 Series on-delay timer is a solid-state electronic device
that provides accurate and reliable timing for control circuits up
to 460VAC. The T10 features a user-selectable time delay from
6 seconds to 10 minutes (0.5 to 12 seconds on the T10S400
model) and SPDT output contacts. When power is applied to the
T10, it immediately begins its timing cycle. During this time, the
indicator LED alternates between red and green and the output
contacts remain inactive. When the timing cycle is complete,
the indicator LED turns solid green and the output contacts are
activated. The output contacts will remain activated until power
is removed from the T10.
The SPDT contact ratings are 480V @ 240VAC on the 115V and
230V models, and 470VA @ 600VAC on the 460V model.
Features & Benefits
g Status LED
g 600V control relay on 460V models
Specifications
Input Characteristics
Frequency 50*/60Hz
Functional Characteristics
Timing Range
T10100, T10200, T10400 6 seconds to 10 minutes
T10S400 0.5 seconds to 12 seconds
Repeat Accuracy
Fixed Condition ±1%
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty
T10100, T10200 480VA @ 240VAC
T10400, T10S400 470VA @ 600VAC
General Characteristics
Maximum Input Power 5 W
Terminal
Torque 7 in.-lbs.
Wire Size 12-18AWG
Safety Marks
UL UL508 (File #E68520)
Dimensions H 74.4 mm (2.93”); W 133.9 mm (5.27”);
D 74.9 mm (2.95”)
Weight 0.94 lb. (15.04 oz., 426.38 g)
Mounting Method #8 screws
*Note: 50Hz will increase all delay timers by 20%.
Wiring Diagram
Ordering Information
MODEL LINE VOLTAGE DESCRIPTION
T10120 115VAC 0.1 to 10 minute range, 240 VAC
rated output contacts
T10200 230VAC 0.1 to 10 minute range, 240 VAC
rated output contacts
T10400 460VAC 0.1 to 10 minute range, 600 VAC
rated output contacts
T10S400 460VAC 0.5 to 12 second range, 600 VAC
rated output contacts
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix page 509, Figure 6.
© 2022 Littelfuse, Inc. 291
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/erdm
ERDM SERIES
L1 N/L2
V = Voltage
A knob, or terminals 9 & 10
are only included on
adjustable units. Relay
contacts are isolated.
RT is used when external
adjustment is ordered.
Description
The ERDM Series is a combination of digital electronics and
a reliable electromechanical relay. These devices offer a DPDT
relay output for relay logic circuits, and isolation of input to
output voltages. Cost effective for OEM applications, such as
random starting, sequencing ON, switch de-bouncing, anti-short
cycling, and other common delay-on-make applications.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Digital integrated
circuitry with
electromechanical relay
Repeat Accuracy + / - 0.5%
Isolated 10A, DPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1004-16, P1004-16-XVersa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1015-64 (AWG 14/16) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
ERDM123 12VDC Onboard knob 0.1 - 10s ERDM422 120VAC Onboard knob 0.1 - 5s
ERDM126 12VDC Onboard knob 0.6 - 60s ERDM423 120VAC Onboard knob 0.1 - 10s
ERDM128 12VDC Onboard knob 0.1 - 10m ERDM425 120VAC Onboard knob 0.3 - 30s
ERDM222 24VAC Onboard knob 0.1 - 5s ERDM427 120VAC Onboard knob 0.1 - 5m
ERDM4130S 120VAC Fixed 30s ERDM429 120VAC Onboard knob 0.2 - 15m
ERDM4210 120VAC Onboard knob 1 - 100m
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 25.
292 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/erdm
Specifications
Time Delay
Type Digital integrated circuitry
Range 0.1s - 500m in 11 adjustable ranges or
0.1s - 1000m fixed
Adjustment Fixed, onboard or external adjust
Repeat Accuracy ±0.5%
Tolerance
(Factory Calibration) ≤ ±10%
Recycle Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12, 24, or 120VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
120VAC/DC & 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Output
Type Isolated relay contacts
Form DPDT
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1 x 107
; Full Load - 1 x 106
Protection
Isolation Voltage ≥1500V RMS input to output
Insulation Resistance ≥100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with two #6
(M3.5 x 0.6) screws
Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);
D 43.2 mm (1.7”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 65°C / -40° to 85°C
Weight ≅ 5.7 oz (162 g)
Selection Guides
ERDM SERIES
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 293
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/hrdm
HRDM SERIES
L1 N/L2
Delay-on-Make Timer
Wiring Diagram
NO = Normally Open
L = Load
C = Common, Transfer Contact
NOTE: A knob, or terminals
4 & 5 are only included on
adjustable units. RT is used
when external adjustment is
ordered. Relay contacts are
not isolated.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
HRDM120 12VDC Onboard 0.1 - 10s
HRDM3112S 24VDC Fixed 12s
HRDM413M 120VAC Fixed 3m
HRDM415M 120VAC Fixed 5m
If you don’t find the part you need, call us for a custom product 800-843-8848
Description
The HRDM Series combines an electromechanical relay output
with microcontroller timing circuitry. It offers 12 to 230V
operation in five ranges and factory fixed, onboard, or external
adjustable time delays with a repeat accuracy of ±0.5%. The
output contact rating allows for direct operation of heavy loads,
such as compressors, pumps, blower motors, heaters, etc. This
series is ideal for OEM applications where cost is a factor.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At the
end of the time delay, the output relay energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact, low
cost design Allows flexibility for OEM applications
Isolated, 30A, SPDT,
NO output contacts
Allows direct operation of heavy loads:
compressors, pumps, blower moters, heaters.
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 17.
294 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/hrdm
External Resistance vs. Time Delay
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
HRDM SERIES
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 100m in 5 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20 ms, whichever is greater
Tolerance
(Factory Calibration) ±1%, ±5%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ±2%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC -15% - 20%
24 to 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Power Consumption AC ≤ 4VA; DC ≤ 2W
Output
Type Electromechanical relay
Form Non-isolated, SPDT
Ratings SPDT-NO SPDT-NC
General Purpose 125/240VAC 30A 15A
Resistive 125/240VAC 30A 15A
28VDC 20A 10A
Motor Load 125VAC 1 hp* 1/4 hp**
240VAC 2 hp** 1 hp**
Life Mechanical - 1 x 106
;
Electrical - 1 x 105
, *3 x 104
, **6,000
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions 3 x 2 x 1.5 in. (76.7 x 51.3 x 38.1mm)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 295
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/krdm
KRDM SERIES
Description
The KRDM Series is a compact time delay relay measuring only
2 in. (50.8 mm) square. Its solid-state timing circuit provides
excellent repeat accuracy and stability. Encapsulation protects
against shock, vibration, and humidity. The KRDM Series is a
cost effective approach for OEM applications that require small
size, isolation, reliability, and long life.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At the
end of the time delay, the output relay energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact, low
cost design Allows flexibility for OEM applications
Isolated, 10A, SPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
KRDM1110S 12VDC Fixed 10s KRDM4110M 120VAC Fixed 10m
KRDM1130S 12VDC Fixed 30s KRDM4110S 120VAC Fixed 10s
KRDM120 12VDC Onboard knob 0.1 - 10s KRDM4145S 120VAC Fixed 45s
KRDM121 12VDC Onboard knob 1 - 100s KRDM420 120VAC Onboard knob 0.1 - 10s
KRDM2110M 24VAC/DC Fixed 10m KRDM421 120VAC Onboard knob 1 - 100s
KRDM215M 24VAC/DC Fixed 5m KRDM424 120VAC Onboard knob 1 - 100m
KRDM220 24VAC/DC Onboard knob 0.1 - 10s KRDM430 120VAC External 0.1 - 10s
KRDM221 24VAC/DC Onboard knob 1 - 100s KRDM433 120VAC External 0.1 - 10m
KRDM223 24VAC/DC Onboard knob 0.1 - 10m KRDM6115M 230VAC Fixed 15m
KRDM310.2S 24VDC Fixed 0.2s
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
C = Common, Transfer Contact
NO = Normally Open
NC = Normally Closed
A knob is supplied for adjustable
units, or RT terminals 4 & 5 for
external adjust. See external
adjustment vs time delay chart.
Relay contacts are isolated.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
296 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/krdm
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
Output Current/Ambient Temperature
Specifications
Time Delay
Range 0.1s - 100m in 5 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
Factory Calibration) ≤ ±5%
Recycle Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±5%
Input
Voltage 12, 24 or 110VDC; 24, 120 or 230VAC
Tolerance
12VDC & 24VAC/DC -15% - 20%
110VDC 120 & 230VAC -20% - 10%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC;
5A resistive @ 230VAC & 28VDC;
1/4 hp @ 125VAC
Max. Switching Voltage 250VAC
Life (Operations) Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
KRDM SERIES
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 297
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/krps
KRPS SERIES
Description
The KRPS Series is a factory programmed time delay relay
available with 1 of 15 functions and measures only 2 inches
square. The KRPS offers a wide range of fixed, onboard, or
externally adjustable time delays. The output relay contacts
offer a full 10A rating with complete isolation. Its microcontroller
timing circuit provides excellent repeat accuracy and stability.
Encapsulation protects against shock, vibration, and humidity.
The KRPS Series is a cost effective approach for OEM
applications that require small size, isolation, accuracy, and long
life. Special time ranges and functions are available.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact design Allows flexibility for OEM applications
Isolated, SPDT,
10A output Allows control of loads for AC or DC voltages
Encapsulated Encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
L1 N/L2
V = Voltage
C = Common, Transfer Contact
NC = Normally Closed
NO = Normally Open
S1 = Initiate Switch
UTL = Untimed Load
A knob is supplied for adjustable
units, or RT terminals 4 & 5 for
external adjust. See external
adjustment vs. time delay chart.
The untimed load is optional. S1
is not used for some functions.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUST. TIME
DELAY FUNCTION
KRPS4160MM 120VAC Fixed 60m Delay-on-Make
KRPS913MB 230VAC Fixed 3m Delay-on-Break
KRPSA10.1SFT 24 - 240VAC/DC Fixed 0.1s Alternating
KRPSA21RE 24 - 240VAC/DC Onboard 0.1 - 10s Recycling,
On Time First
KRPSA22B 24 - 240VAC/DC Onboard 1 - 100s Delay-on-Break
KRPSA24M 24 - 240VAC/DC Onboard 0.1 - 10m Delay-on-Make
KRPSD10.1SF 12 to 48VDC Fixed 0.1s Leading Edge
Flip-Flop
KRPSD21B 12 to 48VDC Onboard 0.1 - 10s Delay-on-Break
KRPSD21M 12 to 48VDC Onboard 0.1 - 10s Delay-on-Make
KRPSD22M 12 to 48VDC Onboard 1 - 100s Delay-on-Make
KRPSD22S 12 to 48VDC Onboard 1 - 100s Single Shot
KRPSD25S 12 to 48VDC Onboard 1 - 100m Single Shot
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
298 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/krps
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 1000h in 9 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±2%
Reset Time ≤ 150ms
Initiate Time ≤ 40ms; ≤ 750 operations per minute
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12 to 48VDC; 24 to 240VAC/DC
Tolerance
12 to 48VDC -15% - 20%
24 to 240VAC/DC -20% - 10%
AC Line Frequency/DC Ripple 50/60Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC
5A resistive @ 230VAC & 28VDC
1/4 hp @ 125VAC
Max. Switching Voltage 250VAC
Life (Operations) Mechanical - 1 x 107
; Electrical - 1 x 105
KRPS SERIES
Timer Functions
Operation (Delay-on-Make)
Upon application of the input voltage, the dime delay begins. The
output relay is de-energized before and during the time delay.
At the end of the time delay, the put energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output relay energizes. The
time delay begins when the initiate switch is opened. The output
remains energized during timing. At the end of the time delay,
the output de-energizes. The output will energize if the initiate
switch is closed when input voltage is applied.
Reset: Re-closing the initiate switch during timing resets the time
delay. Removing input voltage resets the time delay and output.
Operation (Recycling)
Upon application of input voltage, the output relay energizes and
the ON time begins. At the end of the ON time, the output deenergizes and the OFF time begins. At the end of the OFF time,
the output energizes and the cycle repeats as long as input
voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mt. with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connects
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
Output Current/Ambient Temperature
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 299
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/krps
Operation (Alternating)
Input voltage must be applied at all times for proper operation.
The operation begins with the output relay de-energized. Closing
S1 enables the next alternating operation. When S1 opens
(trailing edge triggered), the time delay begins. At the end of the
time delay, the output energizes and remains energized until S1
is (re-closed and) re-opened. Then the output relay de-energizes
and remains until S1 opens again. Each time S1 opens the time
delay occurs and the output transfers.
Reset: Removing input voltage resets the output and the time delay.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch, the
output (relay or solid state) energizes and the time delay begins.
At the end of the delay, the output de-energizes. Opening or
re-closing the initiate switch during timing has no effect on the
time delay. Note (for most single shot timers): If the initiate
switch is closed when input voltage is applied, the output
energizes and the time delay begins.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Removing input voltage resets the
time delay and output.
Operation (Retriggerable Single Shot, Motion Detector)
Input voltage must be applied prior to and during timing. The
output relay is de-energized. When the initiate switch S1 closes
momentarily or maintained, the output energizes and the time delay
begins. Upon completion of the delay, the output de-energizes.
Reset: Re-closing S1 resets the time delay and restarts timing.
Removing input voltage resets the time delay and output.
Operation (Trailing Edge Single Shot, Impulse-OFF)
Input voltage must be applied before and during timing. When the
initiate switch S1 opens, the output relay energizes. At the end of
the time delay, the output de-energizes. Re-closing and opening
S1 during timing has no affect on the time delay. The output will
not energize if S1 is open when input voltage is applied.
Reset: Reset occurs when the time delay is complete and S1 is
closed. Removing input voltage resets the time delay and output.
KRPS SERIES
ALTERNATING RELAY
(TRAILING EDGE FLIP-FLOP)
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact NC = Normally
Closed ContacTD = Time Delay
R = Reset
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSD)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open ContactNC = Normally
Closed Contact = Incomplete
Time Delay
TD = Time Delay
R = Reset
TRAILING EDGE SINGLE SHOT
(IMPULSE-OFF)
LEGEND
V = Voltage
R = Reset
T1 = ON Time
T2 = OFF Time
S1 = Initiate Switch
NO = Normally Open Contact
NC = Normally Closed Contact
t = Incomplete Time Delay
TD, TD1, TD2 = Time Delay
C = Count
P = Pulse Duration
= Undefined Time
12 TIME DELAY RELAYS
300 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/ksd1
KSD1 SERIES
L1 N/L2
Delay-on-Make Timer
Description
The KSD1 Series features two-terminal, series-connection
with the load. The KSD1 Series is an ideal choice for delay-onmake timing applications. This series is designed for general
purpose commercial and industrial applications where a small,
cost effective, reliable solid-state timer is required. The factory
calibration for fixed time delays is within 5% of the target time
delay. The repeat accuracy, under stable conditions, is 0.5% of
the selected time delay. This series is designed for popular AC
and DC voltages. Time delays of 0.1 seconds to 1000 minutes
are available in 6 ranges. The output is rated 1A steady and 10A
inrush. The modules are totally solid state and encapsulated to
protect the electronic circuitry.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
+ / -5% time delay accuracy
Compact, low
cost design Allows flexibility for OEM applications
1A Steady solid-state
output, 10A inrush Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
Wiring Diagram
Load may be
connected to
terminal 3 or 1.
RT is used when
external adjustment
is ordered.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
KSD11120S 12VDC Fixed 20s
KSD1123 12VDC External 0.1 - 10m
KSD1230 24VAC Onboard 0.1 - 10s
KSD1320 24VDC External 0.1 - 10s
KSD1412S 120VAC Fixed 2s
KSD14130S 120VAC Fixed 30s
KSD1420 120VAC External 0.1 - 10s
KSD16130S 230VAC Fixed 30s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 301
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/ksd1
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
KSD1 SERIES
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Recycle Time ≤ 150ms
Time Delay vs. Temperature
& Voltage ≤ ±10%
Input
Voltage 24, 120, or 230VAC; 12 or 24VDC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Form NO, open during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Minimum Holding Current ≤ 40mA
OFF State Leakage Current ≅ 7mA @ 230VAC
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
302 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/ksdu
KSDU SERIES
Description
The KSDU Series are encapsulated solid-state, delay-on-make
timers that combine digital timing circuitry with universal voltage
operation. The KSDU Series is factory fixed from 0.1s to 10,230s
and does not include the DIP switch. These series are excellent
choices for process control systems and OEM equipment.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Universal Voltage 24 to 240VAC/DC in 2 ranges
Digital Integrated
Circuitry Repeat accuracy + / - 5%
1A Steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
2 terminal design Provides series connection for easy installation
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16) Female Quick
Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
KSDU8120 24 to 120VAC/DC Fixed 20s
KSDU811200 24 to 120VAC/DC Fixed 1200s
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
L = Load
Load may be connected
to terminal 3 or 1.
KSDU is fixed.
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 303
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/ksdu
Specifications
Time Delay
Type Digital integrated circuitry
Range*
Fixed Fixed from 0.1s - 10230s
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ±10%
Recycle Time ≤150ms
Time Delay vs Temp.
& Voltage ±5%
Input
Voltage 24 to 120VAC/DC; 100 to 240VAC/DC
AC Line Frequency 50/60 Hz
Tolerance ±20%
Output
Type Solid state
Form NO, open during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Minimum Holding Current 40mA
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick
connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
* For CE approved applications, power must be removed from the unit when a switch position
is changed.
KSDU SERIES
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
304 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/ksps
KSPS SERIES
Description
The KSPS Series is a factory programmed module available
in any 1 of 14 standard functions. The KSPS Series offers a
single, fixed, externally or onboard adjustable time delay. The 1A
steady, 10A inrush rated solid-state output provides 100 million
operations typical. Its microcontroller timing circuit provides
excellent repeat accuracy and stability. Encapsulation protects
against shock, vibration, and humidity. The KSPS Series is a cost
effective approach for OEM applications that require small size
and solid state reliability.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact design Allows flexibility for OEM applications
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
L = Load
UTL = Untimed Load
V = Voltage
S1 = Initiate Switch
L1 N/L2
(Positive Switching)
(Negative Switching)
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY FUNCTION
KSPS2180SB 24VAC Fixed 80s Delay-on-Break
KSPSA21FT 24 - 240VAC, positive switching Onboard 0.1 - 10s Recycling, On Time First
KSPSN13MI 12 - 120VDC, negative switching Fixed 3m Interval
KSPSN21B 12 - 120VDC, negative switching Onboard 0.1 - 10s Delay-on-Break
KSPSP145SM 12 - 120VDC, positive switching Fixed 45s Delay-on-Make
KSPSP22B 12 - 120VDC, positive switching Onboard 1 - 100s Delay-on-Break
KSPSP35PSD 12 - 120VDC, positive switching External 1 - 100m Retriggerable Single Shot
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 305
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/ksps
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 1000h in 9 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±2%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms; ≤ 1500 operations per minute
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12 to 120VDC; 24 to 240VAC
Tolerance ≤ ±15%
AC Line Frequency/DC Ripple 50/60Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid-state output
Rating 1A steady, 10A inrush for 16ms
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
OFF State Leakage Current AC ≅ 5mA @ 240VAC, DC≅ 1mA
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mt. with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connects
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
KSPS SERIES
Timer Functions
Operation (Delay-on-Make)
Upon application of the input voltage, the dime delay begins.
The output relay is de-energized before and during the time
delay. At the end of the time delay, the put energizes and
remains energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output relay energizes. The
time delay begins when the initiate switch is opened. The output
remains energized during timing. At the end of the time delay,
the output de-energizes. The output will energize if the initiate
switch is closed when input voltage is applied.
Reset: Re-closing the initiate switch during timing resets the time
delay. Removing input voltage resets the time delay and output.
Operation (Recycling)
Upon application of input voltage, the output relay energizes
and the ON time begins. At the end of the ON time, the output
de-energizes and the OFF time begins. At the end of the OFF
time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open ContactNC = Normally
Closed ContaTD = Time Delay
R = Reset
= Undefined
Time
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed ContacTD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
12 TIME DELAY RELAYS
306 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/ksps
Operation (Alternating)
Input voltage must be applied at all times for proper operation.
The operation begins with the output relay de-energized. Closing
S1 enables the next alternating operation. When S1 opens
(trailing edge triggered), the time delay begins. At the end of the
time delay, the output energizes and remains energized until S1
is (re-closed and) re-opened. Then the output relay de-energizes
and remains until S1 opens again. Each time S1 opens the time
delay occurs and the output transfers.
Reset: Removing input voltage resets the output and the time delay.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch, the
output (relay or solid state) energizes and the time delay begins.
At the end of the delay, the output de-energizes. Opening or
re-closing the initiate switch during timing has no effect on the
time delay. Note (for most single shot timers): If the initiate
switch is closed when input voltage is applied, the output
energizes and the time delay begins.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Removing input voltage resets the
time delay and output.
Operation (Trailing Edge Single Shot, Impulse-OFF)
Input voltage must be applied before and during timing. When the
initiate switch S1 opens, the output relay energizes. At the end of
the time delay, the output de-energizes. Re-closing and opening
S1 during timing has no affect on the time delay. The output will
not energize if S1 is open when input voltage is applied.
Reset: Reset occurs when the time delay is complete and S1 is
closed. Removing input voltage resets the time delay and output.
Operation (Inverted Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch S1, the
output relay de-energizes. At the end of the time delay, the
output energizes. Opening or re-closing S1 during timing has no
affect on the time delay. The output will remain de-energized if
S1 is closed when input voltage is applied.
Reset: Reset occurs when the time delay is complete and S1 is
open. Removing input voltage resets the time delay and output.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output (relay or solid state) energizes during the time delay. At
the end of time delay the output de-energizes and remains
de-energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
KSPS SERIES
LEGEND
V = Voltage
R = Reset
T1 = ON Time
T2 = OFF Time
S1 =Initiate Switch
NO = Normally Open Contact
NC = Normally Closed Contact
t = Incomplete Time Delay
TD, TD1, TD2 = Time Delay
C = Count
P = Pulse Duration
= Undefined Time
ALTERNATING RELAY
(TRAILING EDGE FLIP-FLOP)
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
TRAILING EDGE SINGLE SHOT
(IMPULSE-OFF)
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
INVERTED SINGLE SHOT
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 307
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/msm
MSM SERIES
Description
The MSM Series replaces bi-metal type timing with reliable
solid-state circuitry. There are no moving parts to arc or wear.
It is a cost effective solution for OEM designers. It is available
for printed circuit board mounting or surface mounting with
a removable bracket and wire leads. The MSM Series offers
immediate reset on removal of power.
Operation (Delay-on-Make)
The time delay begins upon application of input voltage. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Analog circuitry Repeat Accuracy + / - 5%,
Factory calibration + / - 15%
Compact, low
cost design Allows flexibility for OEM applications
Long life No moving parts to arc or wear
PCB or wire harness Offers design and installation flexibility
Immediate reset Occurs on removal of power
Totally Encapsulated Protects against shock, vibration and humidity
Wiring Diagram
L1 N/L2
V = Voltage
L = Load
R = Red Wire
B = Black Wire
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY WIRE TYPE WIRE LENGTH inches (mm)
MSM10.5W6 12VDC Fixed 0.5s Standard Lead 6.0 (152.4)
MSM10.7W6 12VDC Fixed 0.7s Standard Lead 6.0 (152.4)
MSM11W6 12VDC Fixed 1s Standard Lead 6.0 (152.4)
MSM110W6 12VDC Fixed 10s Standard Lead 6.0 (152.4)
MSM130W9 12VDC Fixed 30s Standard Lead 9.0 (228.6)
MSM190W6 12VDC Fixed 90s Standard Lead 6.0 (152.4)
MSM20.15W9 24VAC Fixed 0.15s Standard Lead 9.0 (228.6)
MSM210P3 24VAC Fixed 10s PC Mount 0.5 (12.7)
MSM25W9 24VAC Fixed 5s Standard Lead 9.0 (228.6)
MSM30.7W6 24VDC Fixed 0.7s Standard Lead 6.0 (152.4)
MSM42W6 120VAC Fixed 2s Standard Lead 6.0 (152.4)
MSM43W6 120VAC Fixed 3s Standard Lead 6.0 (152.4)
MSM420W6 120VAC Fixed 20s Standard Lead 6.0 (152.4)
MSM450W6 120VAC Fixed 50s Standard Lead 6.0 (152.4)
If you don’t find the part you need, call us for a custom product 800-843-8848
MSM10.5W6
MSM210P3
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 514, Figure 39.
308 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/msm
Specifications
Time Delay
Type Analog Circuitry
Range 0.05 - 180s fixed
Repeat Accuracy ±5%
Tolerance
(Factory Calibration) ±15%
Recycle Time ≤ 75ms
Time Delay vs Temp.
& Voltage ±15%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance ±10%
AC Line Frequency 50/60 Hz
Output
Type Solid State
Form NO, open during timing
Maximum Load Current 0.5A steady state 25°C;
0.25A steady state 60°C
Minimum Holding Current 40mA
Voltage Drop ≅ 2.5V @ 0.5A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS input to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting A.) PC mount 14 AWG (2.087mm2
) wires
(Can be inserted in AMP Miniature Spring
Socket #645980-1)
B.) Stranded 18 AWG wire leads (0.933 mm2
)
with mounting bracket
Environmental
Operation/Storage
Temperature -20° to 60°C / -30° to 85°C
Humidity 95% relative, non-condensing
Weight P: ≅ 1.1 oz (31.2 g) W: ≅ 1.2 oz (34 g)
MSM SERIES
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 309
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/orm
ORM SERIES
Description
The ORM Series features open PC board construction for
reduced cost. It has isolated, 10A, DPDT relay contacts and all
connections are 0.25 in (6.35 mm) male quick connect terminals.
The time delay may be ordered as factory fixed, onboard knob,
or external adjustment. Time delays from 0.05 - 300 seconds.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Analog circuitry with
electromechanical relay Repeat Accuracy + / - 2%
Isolated 10A, DPDT
output contacts Allows control of loads for AC or DC voltages
Open PCB contruction Reduces cost for OEM applications
Accessories
P1004-12, P1004-12-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
ORM120A17 120VAC Fixed 7s
ORM120A25 120VAC Onboard knob 3 - 300s
ORM230A17 230VAC Fixed 7s
ORM24D13.5 24VDC/28VDC Fixed 3.5s
ORM24D22 24VDC Onboard knob 0.5 - 30s
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
RT is used when external
adjustment is ordered.
Relay contacts are isolated.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 26.
310 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/orm
Specifications
Time Delay
Type Analog circuitry
Range 0.05 - 300s in 5 adjustable ranges or fixed
Repeat Accuracy ±2% or 20ms, whichever is greater
Tolerance Adjustable: guaranteed range
Fixed: ±10%
Recycle Time After timing - ≤ 16ms;
During timing - 0.1% of max. time delay or
75ms, whichever is greater
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 24 or 110VDC; 24, 120, or 230VAC
Tolerance
24VDC/AC -15% - 20%
110 to 230VAC/DC -20% - 10%
AC Line Frequency 50/60 Hz
Power Consumption 2.25W
Output
Type Electromechanical relay
Form DPDT, Isolated
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1x107
; Electrical - 1x106
Protection
Polarity DC units are reverse polarity protected
Isolation Voltage ≥1500V RMS input to output
Mechanical
Mounting Surface mount with four #6 (M3.5 x 0.6) screws
Dimensions H 53.8 mm (2.12”); W 93.7 mm (3.69”);
D 47.8 mm (1.88”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 65°C / -30° to 85°C
Weight ≅ 2.7 oz (77 g)
Selection Guide
ORM SERIES
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 311
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/prlm
PRLM SERIES
L1 N/L2
8-pin octal DPDT
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
PRLM41180 120 V ac Fixed 180 s
PRLM423 120 V ac Adjustable 1–60 s
Description
The PRLM series is designed for use in non-critical timing
applications. It offers low cost, knob adjustable timing control,
full 10 A relay output, and onboard LED indication. The knob
adjustment provides a guaranteed time range of up to 10
minutes in 6 ranges. The onboard LED indicates whether or
not the unit is timing (flashing LED) as well as the status of the
output.
Operation (Delay-on-Make)
The time delay is initiated when input voltage is applied. LED
flashes during timing. At the end of the delay period, the output
contacts energize. LED is on steady after the unit times out.
Reset: Reset is accomplished by removal of input voltage. There
is no false output when reset during timing.
Features & Benefits
FEATURES BENEFITS
Electronic circuitry with
electromechanical relay Repeat Accuracy + / - 2 %
Knob adjustable
time delay Guaranteed time range of up to 10 mins in 6 ranges
Isolated 10 A, DPDT
output contacts Allows control of loads for ac or dc voltages
LED indication Provides relay status both during and after timing
Industry standard octal
plug connection Eliminates need for special connectors
Accessories
OT08PC 8-pin Octal Socket for UL listing*
Octal Socket for plug-in units. 8-pin surface &
DIN-rail mountable. Rated for 10 A @ 600 V ac
P1011-6 Octal Socket for UL listing*
8-pin surface mount socket with binder head
screw terminals. Rate 10 A @ 600 V ac.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix B, page 512, Figure 24
312 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/prlm
PRLM SERIES
Specifications
Time Delay
Type Digital circuitry
Range See "Ordering Information" table
Repeat Accuracy ±2 %
Fixed Time Tolerance
& Setting Accuracy +/- 5 %
Reset Time ≤ 50 ms
Recycle Time After timing: ≤ 20 ms
During timing: 0.1% of max. time delay or
75 ms, whichever is greater
Time Delay vs Temp.
& Voltage ≤ ± 5 %
Input
Voltage 120 V ac
Tolerance
120 V ac -20 %–10 %
AC Line Frequency 50/60 Hz
Power Consumption ≤ 3.25W
Output
Type Electromechanical relay
Form Isolated, DPDT
Rating 10 A resistive @ 240 V ac;
1/3 hp @ 120/240 V ac
Life Mechanical - 1x107
;
Electrical - 1x106
Protection
Surge IEEE C62.41-1991 Level A
Isolation Voltage ≥ 1500 V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity Dc units are reverse polarity protected
Indication
Type LED
Operation During timing - flashing
Output energized - on steady
Mechanical
Mounting Plug-in socket
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D (with socket) 104.78 mm (4.13”)
Termination Octal 8-pin plug-in
Environmental
Operating/Storage
Temperature -20° to 65 °C / -30° to 85 °C
Weight ≅ 4 oz (113 g)
Safety Marks
UL (socket required)* UL 508 (E57310)
*UL Listed when used with Part Number OT08-PC or RB08-PC manufactured by
Custom Connector Corp.
Note: Manufacturer's recommended screw terminal torque for the OT series
sockets is 12 in-lbs.
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 313
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/tdm-tdmh-tdml
TDM / TDMH / TDML SERIES
Delay-on-Make Timer
L1 N/L2
Wiring Diagram
Relay contacts are isolated.
Ordering Information
MODEL INPUT VOLTAGE DELAY RANGE
TDM120AL 120 V ac 1–1023 s in 1 s increments
TDM12DL 12 V dc 1–1023 s in 1 s increments
TDM230AL 230 V ac 1–1023 s in 1 s increments
TDM24AL 24 V ac 1–1023 s in 1 s increments
TDM24DL 24 V dc/28 V dc 1–1023 s in 1 s increments
TDMH120AL 120 V ac 10 –10230 s in 10 s increments
TDMH24AL 24 V ac 10 –10230 s in 10 s increments
TDML110DL 110 V dc 0.1 –102.3 s in 0.1 s increments
TDML120AL 120 V ac 0.1 –102.3 s in 0.1 s increments
TDML12DL 12 V dc 0.1 –102.3 s in 0.1 s increments
TDML24DL 24 V dc/28 V dc 0.1 –102.3 s in 0.1 s increments
Description
The TDM/TDMH/TDML series is a delay-on-make timer that
combines accurate digital circuitry with isolated, DPDT relay
contacts in an industry standard 8-pin plug-in package. DIP
switch adjustment allows precise selection of the time delay over
the full time delay range. The TDM/TDMH/TDML series is the
product of choice for custom control panel and OEM designers.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At the
end of the time delay, the output relay energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Wide delay range
(0.1 s to 2.8 h)
User selectable via DIP switches for fine tuning
to individual applications.
Microcontroller based Repeat Accuracy +/- 0.1 %
Dip switch adjustment Provides first time setting accuracy of +/- 2 %
Setting accuracy +/- 2 % Provides flexibility for use in most applications
LED indication Provides visual indication of time delay status
Isolated 10 A, DPDT
output contacts Allows control of loads for ac or cc voltages
Accessories
OT08PC 8-pin Octal Socket for UL listing*
Octal Socket for plug-in units. 8-pin surface &
DIN-rail mountable. Rated for 10 A @ 600 V ac
P1011-6 Octal Socket for UL listing*
8-pin surface mount socket with binder head
screw terminals. Rated 10 A @ 600 V ac.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 23.
314 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/tdm-tdmh-tdml
TDM / TDMH / TDML SERIES
Specifications
Time Delay
Type Digital integrated circuitry
Range 0.1–102.3 s in 0.1 s increments
1–1023 s in 1 s increments
10–10,230 s in 10 s increments
Repeat Accuracy ±0.1 %
Setting Accuracy ±2 %
Reset Time ≤ 150 ms
Time Delay vs. Temperature
& Voltage ±5 %
Indicator LED glows during timing; relay is
de-energized
Input
Voltage 12, 24, or 110 V dc; 24, 120, or 230 V ac
Tolerance
12 V dc & 24 Vdc/ac -15 %–20 %
110 V ac/dc to 230 V ac -20 %–10 %
Ac Line Frequency 50/60 Hz
Power Consumption ≤ 3.25W
Output
Type Electromechanical relay
Form DPDT
Rating 10 A resistive @ 120/240 V ac;
1/3 hp @ 120/240 V ac
Life Mechanical - 1 x107
; Electrical - 1 x 106
Protection
Polarity Dc units are reverse polarity protected
Isolation Voltage ≥ 1500 V RMS input to output
Mechanical
Mounting Plug-in socket
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D (with socket) 104.78 mm (4.13”)
Termination Octal 8-pin plug-in
Environmental
Operating/Storage
Temperature -20 °C to 65 °C / -30 °C to 85 °C
Weight ≅ 4 oz (113 g)
Safety Marks
UL (socket required)* UL 508 (E57310)
*UL Listed when used with Part Number OT08-PC or RB08-PC manufactured by
Custom Connector Corp.
Note: Manufacturer's recommended screw terminal torque for the OT Series
sockets is 12 in-lbs.
Binary Switch Operation
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 315
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/tdu-tduh-tdul
TDU / TDUH / TDUL SERIES
Encapsulated Solid-State,
Delay-on-Make Timers
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE TIME RANGE (SEC)
TDUL3000A 24 to 120VAC/DC 0.1-102.3
TDUL3001A 100 to 240VAC/DC 0.1-102.3
TDU3000A 24 to 120VAC/DC 1-1023
TDU3001A 100 to 240VAC/DC 1-1023
TDU3003A 120 to 277VC/DC 1-1023
TDUH3000A 24 to 120VAC/DC 10-10230
TDUH3001A 100 to 240VAC/DC 10-10230
If you don’t find the part you need, call us for a custom product 800-843-8848
Description
The TDU Series are encapsulated solid-state, delay-on-make
timers that combine digital timing circuitry with universal voltage
operation. The TDU offers DIP switch adjustment allowing
accurate selection of the time delay over the full time delay
range. This series is an excellent choice for process control
systems and OEM equipment.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Universal input voltage Meets wide application needs
Microcontroller based Repeat Accuracy +/- 0.5% or 20ms, whichever
is greater
Totally solid state
and encapsulated
No moving parts to arc and wear out over time, and
encapsulated to protect against shock, vibration,
and humidity
3 time ranges available
(0.1s to 2.8h) Makes it versatile for use in many applications
DIP switch adjustment Provides first time setting accuracy
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
L1 N/L2
Load may be connected to
terminal 3 or 1.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
316 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/tdu-tduh-tdul
TDU / TDUH / TDUL SERIES
Specifications
Time Delay
Type Digital integrated circuitry
Range* 0.1 - 102.3s in 0.1s increments
1 - 1,023s in 1s increments
10 - 10,230s in 10s increments
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ±10%
Recycle Time ≤ 150ms
Time Delay vs Temp.
& Voltage ±5%
Input
Voltage 24 to 120VAC/DC; 100 to 240VAC/DC
AC Line Frequency 50/60 Hz
Tolerance ±20%
Output
Type Solid state
Form NO, open during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Minimum Holding Current 40mA
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm)
male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Binary Switch Operation
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 317
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/th1
TH1 SERIES
Description
The TH1 Series is a solid-state relay and timer combined into
one compact, easy-to-use control. This highly reliable device
eliminates the need for a separate solid-state relay. When
mounted to a metal surface, it can switch load currents up to
20A steady state, and 200A inrush.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 2%,
Factory calibration + / - 5%
Compact, low
cost design
Allows flexibility for OEM applications and reduces
labor and component costs
High load currents up
to 20A, 200A inrush
Allows direct operation of motors, lamps, and
heaters directly without a contactor
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Metalized
mounting surface Facilitates heat transfer for high current applications
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
L1 N/L2
V = Voltage
S1 = Optional Low Current
Initiate Switch
L = Load
RT is used when external
adjustment is ordered.
Ordering Information
MODEL OUTPUT
RATING
INPUT
VOLTAGE ADJUSTMENT TIME DELAY
TH1B633 10A 230VAC Onboard 2 - 180s
TH1C415 20A 120VAC Fixed 5s
TH1C621 20A 230VAC External 0.1 - 3s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 19.
318 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/th1
Selection Guide
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Specifications
Time Delay
Range 0.1 - 600s in 4 adjustable ranges or fixed
Repeat Accuracy ±2% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ± 5%
Time Delay vs Temp.
& Voltage ≤ ±10%
Recycle Time ≤ 150ms
Input
Voltage 24, 120, or 230VAC
Tolerance ±15%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Form NO, open during timing
Maximum Load Currents Output Steady State Inrush**
A 6A 60A
B 10A 100A
C 20A 200A
Minimum Load Current 100mA
Voltage Drop ≅ 2.5V at rated current
OFF State Leakage Current ≅ 5mA @ 230VAC
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting ** Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
**Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
TH1 SERIES
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 319
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/thd1b4105s
THD1B410.5S
Description
The THD1B410.5S combines accurate timing circuitry with
high power solid-state switching. It can switch motors, lamps,
and heaters directly without a contactor. You can reduce labor,
component cost, and increase reliability with these small,
easy-to-use, timers.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
Factory calibration + / - 1%
Compact, low
cost design
Allows flexibility for OEM applications and reduces
labor and component costs
High load currents up
to 20A, 200A inrush
Allows direct operation of motors, lamps, and
heaters directly without a contactor
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Metalized
mounting surface Facilitates heat transfer for high current applications
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
L1 N/L2
V = Voltage
S1 = Optional Low Current
Initiate Switch
L = Load
RT is used when external
adjustment is ordered.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 19.
320 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/thd1b4105s
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Recycle Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Form NO, open during timing
Maximum Load Current Output Steady State Inrush**
A 6A 60A
B 10A 100A
C 20A 200A
Minimum Load Current 100mA
Voltage Drop ≅ 2.5V @ rated current
OFF State Leakage Current ≅ 5mA @ 230VAC
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting ** Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
**Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
THD1B410.5S
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 321
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/tmv8000-tsu2000
TMV8000 / TSU2000 SERIES
Description
The TMV and TSU Series are universal voltage delay-on-make
timers. Two models cover all the popular voltages and time
delays. Available with knob or external adjust time delay. Its
simple two terminals can easily be connected in series with a
relay coil, contactor coil, solenoid, lamps, small motor, etc., to
delay their energization, prevent short cycling or to sequence on
various loads.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Universal AC/DC
operating voltage Provides flexibility for use in all systems
Totally solid-state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Two terminal series
connection with the load
Provides quick and easy installation for new or
existing systems
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
Load may be connected to
terminal 3 or 1.
TMV has knob adjustment.
TSU has external
adjustment terminals 4 & 5.
L1 N/L2
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
TMV8000 24 to 240VAC/DC Onboard 0.1 - 8m
TSU2000 24 to 240VAC/DC External 5 - 480s
If you don’t find the part you need, call us for a custom product 800-843-8848
Universal Voltage Delay-on-Make Timer
TMV8000
TSU2000
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
322 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/tmv8000-tsu2000
TMV8000 / TSU2000 SERIES
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Selection Guide
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Specifications
Time Delay
Type Analog circuitry
Range 5 - 480s (TSU2000)
0.1 - 8m (TMV8000)
Repeat Accuracy ±2%
Tolerance
(Factory Calibration) ≤ ±10%
Reset Time ≤ 100ms
Input
Voltage 24 to 240VAC/DC ±20%
AC Line Frequency 50/60 Hz
Output
Type Solid State
Form NO, open during timing
Maximum Load Current 1A steady state, 10A inrush at 55°C
Minimum Holding Current ≤ 40mA
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 70°C / -30° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 323
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/trm
TRM SERIES
*
Description
The TRM series is a combination of digital electronic circuitry and
electromechanical relay output. It provides input to output isolation
with a wide variety of input voltages and time ranges. Standard
plug-in base wiring, fast reset, rugged enclosure, and good repeat
accuracy make the TRM a select choice in any OEM application.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At the
end of the time delay, the output relay energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Electronic circuitry with
electromechanical relay Repeat Accuracy +/- 2 %
Isolated 10 A, SPDT or
DPDT output contacts Allows control of loads for ac or dc voltages.
L1 N/L2
L1 N/L2
L1 N/L2
8-pin octal DPDT
8-pin octal SPDT
V = Voltage
RT is used when
external adjustment
is ordered. Relay
contacts are isolated.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT OUTPUT TIME TOLERANCE TIME DELAY
TRM120A2X30 120 V ac Knob Octal, DPDT +/- 20% 1–30 s
TRM120A2Y120 120 V ac Knob Octal, DPDT +/- 10% 2–120 s
TRM120A2Y180 120 V ac Knob Octal, DPDT +/- 10% 2–180 s
TRM24A8Y5 24 V ac External Octal, SPDT without potentiometer +/- 10% 0.1–5 s
TRM24D1X10 24 V dc/28 V dc Fixed Octal, DPDT +/- 20% 10 s
TRM24D1X2 24 V dc/28 V dc Fixed Octal, DPDT +/- 20% 2 s
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 24.
324 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/trm
TRM SERIES
OT08PC 8-pin Octal Socket for UL listing*
Octal Socket for plug-in units. 8-pin surface &
DIN-rail mountable. Rated for 10 A @ 600 V ac.
OT11PC Octal Socket for UL listing*
11-pin surface & DIN rail mountable. Rated for
10 A @ 300 V ac
P1011-6 Octal Socket for UL listing*
8-pin surface mount socket with binder head
screw terminals. Rated 10 A @ 600 V ac.
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Selection Guides
Function Diagram
Specifications
Time Delay
Type Digital circuitry
Range See "Ordering Information" table
Repeat Accuracy ± 2 %
Fixed Time Tolerance &
Setting Accuracy ± 5, 10, or 20 %
Reset Time ≤ 50 ms
Recycle Time After timing: ≤ 20 ms
During timing: 0.1 % of max. time delay or
75 ms, whichever is greater
Time Delay vs Temp.
& Voltage ≤± 5 %
Indicator LED glows after time delay; relay is energized
Input
Voltage 24 V dc; 24, 120 V ac
Tolerance
24 V dc/ac -15 %–20 %
120 V ac -20 %–10 %
AC Line Frequency 50/60 Hz
Power Consumption ≤ 3.25W
Output
Type Electromechanical relay
Form Isolated DPDT or SPDT
Rating 10 A resistive @ 120/240 V ac;
1/3 hp @ 120/240 V ac
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Protection
Isolation Voltage ≥ 1500 V RMS between input &
output terminals
Insulation Resistance ≥ 100 MΩ
Polarity Dc units are reverse polarity protected
Mechanical
Mounting Plug-in socket
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D (with socket) 104.78 mm (4.13”)
Termination Octal 8-pin or 11-pin plug-in
Environmental
Operating/Storage
Temperature -20 °C to 65 °C / -30 °C to 85 °C
Weight ≅ 4 oz (113 g)
Safety Marks
UL (socket required)* UL 508 (E57310)
*UL Listed when used with Part Number OT08-PC, RB08-PC, OT11-PC, or RB11-PC
manufactured by Custom Connector Corp.
Note: Manufacturer's recommended screw terminal torque for the OT series sockets
is 12 in-lbs.
Accessories
External RT P/N Selection Table
VALUE PART NUMBER*
100K ohm
100K ohm
P1004-95
P1004-95-X
*Externally adjustable potentiometers. Numbers with additional "-X" include
two pre-soldered 8" wire leads with 1/4" female quick-connect terminals (for
clockwise increase).
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 325
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/ts1
TS1 SERIES
Delay-on-Make Timer
Description
The TS1 Series offers proven reliability and performance with
years of use in OEM equipment and commercial applications.
This encapsulated general use timing module is capable of
controlling load currents ranging from 5mA to 1A. May be
connected in series with contactors, relays, valves, solenoids,
small motors, and lamps.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Analog circuitry Repeat Accuracy + / - 2%
Fixed or external
adjustable time delay
External time delay settings are adjustable from
0.05s - 10m in 8 ranges for added flexibility
5mA to 1A load
current range
Minimum holding current of 5mA ensures proper
operation with the lightest of loads
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Two terminal series
load connections
Allows connection in series with contactors,
relays, valves, solenoids, small motors and lamps.
Provides quick and easy installation for new or
existing systems
Wiring Diagram
L1 N/L2
Load may be
connected to
terminal 3 or 1.
RT is used when
external adjustment
is ordered.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
TS1211.5 24VAC Fixed 1.5s TS1412 120VAC Fixed 2s
TS121150 24VAC Fixed 150s TS14120 120VAC Fixed 20s
TS12130 24VAC Fixed 30s TS14130 120VAC Fixed 30s
TS1214 24VAC Fixed 4s TS1415 120VAC Fixed 5s
TS12190 24VAC Fixed 90s TS1416 120VAC Fixed 6s
TS1221 24VAC External 0.05 - 3s TS1421 120VAC External 0.05 - 3s
TS1222 24VAC External 0.5 - 60s TS1422 120VAC External 0.5 - 60s
TS1224 24VAC External 5 - 600S TS1423 120VAC External 2 - 180s
TS13115 24VDC Fixed 15s TS1424 120VAC External 5 - 600s
TS1321 24VDC External 0.05 - 3s TS1612 230VAC Fixed 2s
TS1410.25 120VAC Fixed 0.25s TS1615 230VAC Fixed 5s
TS14110 120VAC Fixed 10s TS1621 230VAC External 0.05 - 3s
TS141180 120VAC Fixed 180s TS1622 230VAC External 0.5 - 60s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
326 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/ts1
Accessories
P1004-XX, P1004-XX-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
VTP(X)(X) Plug-on Adjustment Module
Mounts on modules with in-line adjustment
terminals. Rated at 0.25W at 55°C. Available in
resistance values from 5KΩ to 5MΩ.
Selection Table for VTP Plug-on Adjustment Accessory
All Other Voltages 12VDC
Time Delay VTP P/N Time Delay VTP P/N
1 - 0.05-3s
2 - 0.5-60s
3 - 2-180s
4 - 5-600s
VTP4B
VTP4F
VTP4J
VTP5N
1 - 0.05-1s
2 - 0.5-20s
3 - 2-60s
4 - 5-120s
VTP2A
VTP2E
VTP2F
VTP2H
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Specifications
Time Delay
Type Analog circuitry
Range
12VDC 0.05 - 120s in 4 adjustable ranges or fixed
(1 MΩ max. RT )
Other Voltages 0.05 - 600s in 4 adjustable ranges or fixed
Repeat Accuracy ±2% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±10%
Recycle Time After timing – ≤ 16ms
During timing – 0.1% of time delay or 75ms,
whichever is greater
Time Delay vs. Temperature
& Voltage ≤ ±10%
Input
Voltage 12, 24 or 120VDC; 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Form NO, open during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Minimum Holding Current 5mA
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 80°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Selection Chart
TS1 SERIES
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 327
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/tsd1
TSD1 SERIES
L1 N/L2
Delay-on-Make Timer
Description
The TSD1 Series is designed for more demanding commercial
and industrial applications where small size and accurate
performance is required. The factory calibration for fixed time
delays is within 1% of the target time delay. The repeat accuracy,
under stable conditions, is 0.1% of the time delay. The TSD1
Series is rated to operate over an extended temperature range.
Time delays of 0.1 seconds to 100 hours are available. The
output is rated 1A steady and 10A inrush. The modules are totally
solid state and encapsulated to protect the electronic circuitry.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.1%,
+ / -1% time delay accuracy
Extended
temperature range
Rated to 75°C operating temperature to withstand
high heat applications.
Compact, low
cost design Allows flexibility for OEM applications
1A Steady solid-state
output, 10A inrush Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
Load may be
connected to
terminal 3 or 1.
RT is used when
external adjustment
is ordered.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
TSD1311.2S 24VDC Fixed 1.2s
TSD1321 24VDC External 1 - 100s
TSD1424 120VAC External 1 - 100m
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
328 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make
Littelfuse.com/tsd1
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Specifications
Time Delay
Range 0.1s - 100h in 7 adjustable ranges or fixed
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Recycle Time ≤ 150ms
Time Delay vs. Temperature
& Voltage ≤ ±1%
Input
Voltage 12, 24, 120VDC; 24, 120, 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Form NO, open during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Minimum Holding Current ≤ 40mA
Off State Leakage Current ≅ 7mA @ 230VAC
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
TSD1 SERIES
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 329
Time Delay Relays
Dedicated — Delay-on-Make, Normally Closed
Littelfuse.com/ts441165
TS441165
Description
The TS441165 is an analog delay-on-make timer with a normally
closed solid-state output. Unlike an interval timer, the load is
energized prior to and during the time delay period. It can be
used as a faster starting interval time delay when S1 is closed
upon application of input voltage.
Operation (Delay-on-Make NC)
Upon application of input voltage, the load is energized
immediately. When the initiate switch is closed, the time delay
begins. At the end of the time delay, the load de-energizes.
Reset: When the initiate switch is reopened, the load again
energizes and the time delay is reset. Removing input voltage
resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Analog circuitry Repeat Accuracy + / - 2%
Compact, low
cost design Allows flexibility for OEM applications
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Load energized prior to
and during time delay Faster operation
Totally solid state and
encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Normally closed output Can be used as a faster starting interval time delay
Accessories
P1004-XX, P1004-XX-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Wiring Diagram
L1 N/L2
V = Voltage
S1 = Initiate Switch
L = Load
RT is used when external
adjustment is ordered.
12 For dimensional drawing see: Appendix, page 512, Figure 16.
TIME DELAY RELAYS
330 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Make, Normally Closed
Littelfuse.com/ts441165
Accessories
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
VTP(X)(X) Plug-on Adjustment Module
Mounts on modules with in-line adjustment
terminals. Rated at 0.25W at 55°C. Available in
resistance values from 5KΩ to 5MΩ.
Selection Table for VTP Plug-on Adjustment Accessory
Time Delay VTP P/N
1 - 0.05-3s
2 - 0.5-60s
3 - 2-180s
4 - 5-600s
VTP4B
VTP4F
VTP4J
VTP5N
Selection Guide
Function Diagram
DELAY-ON-MAKE (NORMALLY CLOSED)
TS441165
Specifications
Time Delay
Type Analog circuitry
Range 165s
Adjustment Fixed
Repeat Accuracy ±2% or 20ms, whichever is greater; under
fixed conditions
Tolerance
(Factory Calibration) ≤ ±10%
Time Delay vs Temp.
& Voltage ≤ ±10%
Recycle Time ≤ 150ms
Input
Voltage 120VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Form NC, closed during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
V = Voltage
S1 =Initiate Switch
L = Load
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 331
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/hrdb
HRDB SERIES
Delay-on-Break Timer
Description
The HRDB Series combines an electromechanical, relay output
with microcontroller timing circuitry. The HRDB offers 12 to 230V
operation in five options and factory fixed, external, or onboard
adjustable time delays with a repeat accuracy of ±0.5%. The
isolated output contact rating allows for direct operation of heavy
loads, such as compressors, pumps, blower motors, heaters, etc.
The HRDB is ideal for OEM applications where cost is a factor.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output relay energizes. The
time delay begins when the initiate switch is opened. The output
remains energized during timing. At the end of the time delay,
the output de-energizes. The output will energize if the initiate
switch is closed when input voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact, low
cost design Allows flexibility for OEM applications
Isolated, 30A, SPDT,
NO output contacts
Allows direct operation of heavy loads:
compressors, pumps, blower moters, heaters.
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
V = Voltage
S1 = Initiate Switch
L = Timed Load
UTL = Untimed Load (optional)
NO = Normally Open
C = Common, Transfer Contact
NOTE: A knob, or terminals
4 & 5 are only included on
adjustable units. RT is used
when external adjustment
is ordered. Relay contacts
are isolated. Dashed lines
are internal connections. The
untimed load is optional.
Wiring Diagram
L1 N/L2
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME
TOLERANCE TIME DELAY MODEL INPUT
VOLTAGE ADJUSTMENT TIME
TOLERANCE TIME DELAY
HRDB1110M 12VDC Fixed + / -5% 10m HRDB223 24VAC Onboard + / -5% 0.1 - 10m
HRDB117S 12VDC Fixed + / -5% 7s HRDB321 24VDC Onboard + / -5% 1 - 100s
HRDB120 12VDC Onboard + / -5% 0.1 - 10s HRDB324 24VDC Onboard + / -5% 1 - 100m
HRDB121 12VDC Onboard + / -5% 1 - 100s HRDB423 120VAC Onboard + / -5% 0.1 - 10m
HRDB124 12VDC Onboard + / -5% 1 - 100m HRDB623 230VAC Onboard + / -5% 0.1 - 10m
HRDB21A65M 24VAC Fixed + / -1% 65m
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 17.
332 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/hrdb
HRDB SERIES
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 100m in 5 adjustable ranges or fixed
Repeat Accuracy ±0.5 % or 20ms, whichever is greater
Tolerance
(Factory Calibration) ±1%, ±5%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ±2%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC -15% - 20%
24 to 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Power Consumption AC ≤ 4VA; DC ≤ 2W
Output
Type Electromechanical relay
Form Isolated, SPDT
Ratings SPDT-NO SPDT-NC
General Purpose 125/240VAC 30A 15A
Resistive 125/240VAC 30A 15A
28VDC 20A 10A
Motor Load 125VAC 1 hp* 1/4 hp**
240VAC 2 hp** 1 hp**
Life Mechanical - 1 x 106
;
Electrical - 1 x 105
, *3 x 104
, **6,000
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 38.1 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
Function Diagram
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 333
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/hrdb
HRPS / HRIS SERIES
Description
The HRPS/HRIS Series combines an electromechanical relay
output with microcontroller timing circuitry. It is a factory
programmed module available in any 1 of 13 standard functions.
It offers 12 to 240V operation in two universal ranges and factory
fixed, onboard, or external adjustable time delays with a repeat
accuracy of ±0.5%. The output contact rating allows for direct
operation of heavy loads, such as compressors, pumps, blower
motors, heaters, etc. This series is ideal for OEM applications
where cost is a factor. The HRPS has non-isolated SPDT relay
contacts, and the HRIS has isolated SPDT relay contacts. Both
offer the most popular timer functions in the industry.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output (relay or solid state) energizes during the time delay. At
the end of time delay the output de-energizes and remains
de-energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5% ,
factory calibration +/- 2%
Compact design Allows flexibility for OEM applications
30A, SPDT, Normally
Open output contacts Allows for direct operation of heavy loads
Encapsulated Protects against shock, vibration, and humidity
L1 N/L2 HRPS
Relay contacts are
non-isolated.
L1 N/L2 HRIS
Relay contacts
are isolated.
S1 = Initiate Switch
UTL = Untimed Load (optional)
NO = Normally Open
NC = Normally Closed
C = Common
A knob, or terminals 4 & 5 are
only included on adjustable
units. RT is used when external
adjustment is ordered.
S1 = Initiate Switch
UTL = Untimed Load (optional)
NO = Normally Open
NC = Normally Closed
C = Common
A knob, or terminals 4 & 5 are
only included on adjustable
units. RT is used when external
adjustment is ordered.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUST. TIME
DELAY FUNCTION
HRISW21FT 24 - 240VAC/24 - 110VDC Onboard 0.1 - 10s Alternating
HRISW27I 24 - 240VAC/24 - 110VDC Onboard 0.1 - 10h Interval
HRPSD12HI 12 - 48VDC Fixed 2h Interval
HRISW25B 24 - 240VAC/24 - 110VDC Onboard 1 - 100m Delay on
break
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 17.
334 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/hrps-hris
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16), P1015-13 (AWG 10/12)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Function Diagrams
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
ALTERNATING RELAY
(TRAILING EDGE FLIP-FLOP)
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 1000h in 9 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ±2%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ±2%
Input
Voltage 12 to 48VDC; 24 to 240VAC/24 to 110VDC
Tolerance
12 to 48VDC -15% - 20%
24 to 110VDC/240VAC -20% - 10%
AC Line Frequency 50/60Hz
Power Consumption AC ≤ 4VA; DC ≤ 2W
Output
Type Electromechanical relay
Form SPDT
Ratings SPDT-NO SPDT-NC
General Purpose
125/240VAC 30A 15A
Resistive
125/240VAC 30A 15A
28VDC 20A 10A
Motor Load
125VAC 1 hp* 1/4 hp**
240VAC 2 hp** 1 hp**
Life Mechanical - 1 x 106
Electrical - 1 x 105
, *3 x 104
, **6,000
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output; isolated units
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mt. with one #10 (M5 x 0.8) screw
Dimensions H 76.2 mm (3.0”); W 50.8 mm (2.0”);
D 38.1 mm (1.5”)
Termination 0.25 in. (6.35 mm) male quick connects
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
HRPS / HRIS SERIES
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 335
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/krdb
KRDB SERIES
Description
The KRDB Series is a compact time delay relay measuring only
2 in. (50.8 mm) square. Its microcontroller timing circuit provides
excellent repeat accuracy and stability. Encapsulation protects
against shock, vibration, and humidity. The KRDB Series is a cost
effective approach for OEM applications that require small size,
isolation, reliability, and long life.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output relay energizes. The
time delay begins when the initiate switch is opened. The output
remains energized during timing. At the end of the time delay,
the output de-energizes. The output will energize if the initiate
switch is closed when input voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat accuracy + / - 0.5%,
Factory calibration + / - 5%
Isolated, 10A, SPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated To protect against shock, vibration, and humidity
Compact, low cost
design measuring 2 in.
(50.8mm) square
Allows flexibility for OEM applications
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
Wiring Diagram
L1 N/L2
V = Voltage
S1 = Initiate Switch
C = Common, Transfer Contact
NO = Normally Open
NC = Normally Closed
UTL = Untimed Load (optional)
A knob is supplied for
adjustable units. The untimed
load is optional. Relay contacts
are isolated.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
KRDB110.1S 12VDC Fixed 0.1s KRDB31120S 24VDC Fixed 20s
KRDB112.5S 12VDC Fixed 2.5s KRDB415S 120VAC Fixed 5s
KRDB1120M 12VDC Fixed 20m KRDB4160S 120VAC Fixed 60s
KRDB115M 12VDC Fixed 5m KRDB420 120VAC Onboard 0.1 - 10s
KRDB120 12VDC Onboard 0.1 - 10s KRDB421 120VAC Onboard 1 - 100s
KRDB124 12VDC Onboard 1 - 100m KRDB422 120VAC Onboard 10 - 1000s
KRDB21180S 24VAC/DC Fixed 180s KRDB423 120VAC Onboard 0.1 - 10m
KRDB217S 24VAC/DC Fixed 7s KRDB424 120VAC Onboard 1 - 100m
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
336 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/krdb
Accessories
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Output Current/Ambient Temperature
KRDB SERIES
Specifications
Time Delay
Type Microcontroller with watchdog circuitry
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Recycle Time ≤ 150ms
Initiate Time ≤ 40ms
Time Delay vs Temp.
& Voltage ≤ ±5%
Input
Voltage 12, 24, 110VDC; 24, 120 or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
110VDC, 120 or 230VAC -20% - 10%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC;
5A resistive @ 230VAC & 28VDC;
1/4 hp @ 125VAC
Max. Switching Voltage 250VAC
Life (Operations) Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
Function Diagram
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 337
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/ksdb
KSDB SERIES
Description
The KSDB Series is designed for general purpose commercial
and industrial applications where a small, cost effective, reliable
solid-state timer is required. The factory calibration for fixed
time delays is within 5% of the target time delay. The repeat
accuracy, under stable conditions, is 0.5% of the selected time
delay. This series is designed for popular AC and DC voltages.
Time delays of 0.1 seconds to 1000 minutes are available in
6 ranges. The output is rated 1A steady and 10A inrush. The
modules are totally solid state and encapsulated to protect the
electronic circuitry.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output energizes. The time
delay begins when the initiate switch is opened. The output
remains energized during timing. At the end of the time delay,
the output de-energizes. The output energizes if the initiate
switch is closed when input voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat accuracy + / - 0.5%,
Factory calibration + / - 5%
1A Steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Compact, low
cost design Allows flexibility for OEM applications
Wiring Diagram
V = Voltage
UTL = Optional Untimed
Load
L = Load
S1 = Initiate Switch
RT is used when external
adjustment is ordered.
L1 N/L2
(Positive Switching)
(Negative Switching)
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY SWITCHING
MODE MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY SWITCHING
MODE
KSDB1110MP 12VDC Fixed 10m Positive KSDB314SP 24VDC Fixed 4s Positive
KSDB1115SP 12VDC Fixed 15s Positive KSDB315SP 24VDC Fixed 5s Positive
KSDB1120SP 12VDC Fixed 20s Positive KSDB324N 24VDC External 1 - 100m Negative
KSDB113MP 12VDC Fixed 3m Positive KSDB330N 24VDC Onboard 0.1 - 10s Negative
KSDB113SP 12VDC Fixed 3s Positive KSDB4120M 120VAC Fixed 20m n/a
KSDB120P 12VDC External 0.1 - 10s Positive KSDB4160S 120VAC Fixed 60s n/a
KSDB134P 12VDC Onboard 1 - 100m Positive KSDB4190M 120VAC Fixed 90m n/a
KSDB2115S 24VAC Fixed 15s n/a KSDB431 120VAC Onboard 1 - 100s n/a
KSDB220 24VAC External 0.1 - 10s n/a KSDB61150S 230VAC Fixed 150s n/a
KSDB231 24VAC Onboard 1 - 100s n/a KSDB631 230VAC Onboard 1 - 100s n/a
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
338 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/ksdb
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16), P1015-14 (AWG 18/22)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
KSDB SERIES
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5 % or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 12, 24, or 120VDC; 24, 120, or 230VAC
Tolerance ±20%
Power Consumption AC ≤ 2VA; DC ≤ 2W
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10 %
Output
Type Solid state
Form NO, closed before & during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
OFF State Leakage Current AC≅ 5mA @ 230VAC; DC ≅ 1mA
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
DC Operation Positive or negative switching
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 80°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Function Diagram
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 339
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/orb
ORB SERIES
Description
The ORB Series’ open PCB construction offers the user good
economy without sacrificing performance and reliability. The
output relay is available in isolated, 10A, DPDT or SPDT forms.
The time delay may be ordered as factory fixed, onboard knob,
or external adjustment. All connections are 0.25 in. (6.35 mm)
male quick connect terminals.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output relay energizes. The
time delay begins when the initiate switch is opened (trailing
edge triggered). The output remains energized during timing.
At the end of the time delay, the output de-energizes. The
output will energize if the initiate switch is closed when input
voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Open PCB construction Reduces cost for OEM applications
Analog circuitry Repeat accuracy + / - 2%,
Factory calibration + / - 10%
Isolated, 10A, SPDT or
DPDT output contacts Allows control of loads for AC or DC voltages
Line voltage initiation Separate control voltage is not required
for operation
Accessories
P1004-12, P1004-12-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
L1 N/L2 L1 N/L2
SPDT DPDT
V = Voltage
S1 = Initiate Switch
Relay contacts are
isolated.
RT is used when
external adjustment
is ordered.
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME
DELAY
OUTPUT
FORM
ORB120A160 120VAC Fixed 60s SPDT
ORB120A25 120VAC Onboard 3 - 300s SPDT
ORB24A11D 24VAC Fixed 1s DPDT
ORB24A21D 24VAC Onboard 0.05 - 3s DPDT
ORB24A25 24VAC Onboard 3 - 300s SPDT
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 26.
340 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/orb
Specifications
Time Delay
Type Analog circuitry
Range 0.05 - 300s in 5 adjustable ranges or fixed
Repeat Accuracy ±2% or 20ms, whichever is greater
Tolerance
(Factory Calibration) Adjustable: guaranteed range
Fixed: ±10%
Reset Time ≤ 50ms
Initiate Time ≤ 70ms
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 24, 120, or 230VAC
Tolerance
24VAC -15% - 20%
120 & 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Power Consumption 2.25W
Output
Type Electromechanical relay
Form Isolated, SPDT or DPDT
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1x107
; Electrical - 1x106
Protection
Isolation Voltage ≥1500V RMS input to output
Mechanical
Mounting Surface mount with four #6 (M3.5 x 0.6) screws
Dimensions H 53.8 mm (2.12”); W 93.7 mm (3.69”);
D 47.8 mm (1.88”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 65°C / -30°to 85°C
Weight ≅ 2.7 oz (77 g)
ORB SERIES
Selection Guides
Function Diagram
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 341
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/tdb-tdbh-tdbl
TDB / TDBH / TDBL SERIES
Relay Output, Delay-on-Break
Wiring Diagram
L1 N/L2
L1 N/L2
8-PIN OCTAL SPDT
S1 = Initiate Switch
Relay contacts are isolated
11-PIN DPDT
Ordering Information
MODEL INPUT VOLTAGE DELAY RANGE (SEC) LED TYPE PLUG/OUTPUT FORM
TDB120AL 120 V ac 1–1023 in 1 s increments X Octal (8-pin) plug, SPDT
TDB120ALD 120 V ac 1–1023 in 1 s increments X 11-pin plug, DPDT
TDB12D 12 V dc 1–1023 in 1 s increments Octal (8-pin) plug, SPDT
TDB230AL 230 V ac 1–1023 in 1 s increments X Octal (8-pin) plug, SPDT
TDB24AL 24 V ac 1–1023 in 1 s increments X Octal (8-pin) plug, SPDT
TDB24DL 24 V dc/ 28 V dc 1–1023 in 1s increments X Octal (8-pin) plug, SPDT
TDBH120AL 120 V ac 10–10230 in 10 s increments X Octal (8-pin) plug, SPDT
TDBH120ALD 120 V ac 10–10230 in 10 s increments X 11-pin plug, DPDT
TDBL120AL 120 V ac 0.1–102.3 in 0.1 s increments X Octal (8-pin) plug, SPDT
TDBL120ALD 120 V ac 0.1–102.3 in 0.1 s increments X 11-pin plug, DPDT
TDBL24DL 24 V dc/ 28 V dc 0.1–102.3 in 0.1 s increments X Octal (8-pin) plug, SPDT
Description
The TDB series combines accurate digital circuitry with isolated,
10 A, DPDT or SPDT contacts in an 8-pin or 11-pin plug-in
package. The TDB series features DIP switch selectable time
delays ranging from 0.1–10,230 seconds in three ranges. The
TDB series is the product of choice for custom control panel and
OEM designers.
Operation (Delay-on-Break)
Input voltage must be applied to the input before and during
timing. Upon closure of the initiate switch, the output relay is
energized. The time delay begins when the initiate switch is
opened (trailing edge triggered). The output remains energized
during timing. At the end of the time delay, the output deenergizes. The output will energize if the initiate switch is closed
when input voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
3 time ranges available
(0.1 s to 2.8 h) Makes it versatile for use in many applications
Microcontroller based
Repeat Accuracy + / - 0.1 % or 20 ms,
whichever is greater; Setting Accuracy
+ / - 2 % or 50 ms, whichever is greater
LED indication
(select models) Provides visual indication of relay status
DIP switch adjustment Provides first time setting accuracy
Isolated output contacts Allows control of loads for ac or dc voltages
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 23.
342 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/tdb-tdbh-tdbl
TDB / TDBH / TDBL SERIES
Accessories
OT08PC 8-pin Octal Socket for UL listing*
Octal Socket for plug-in units. 8-pin surface &
DIN-rail mountable. Rated for 10 A @ 600 V ac.
OT11PC Octal Socket for UL listing*
11-pin surface & DIN-rail mountable. Rated for 10
A @ 300 V ac
P1011-6 Octal Socket for UL listing
8-pin surface mount socket with binder head
screw terminals. Rated 10 A @ 600 V ac.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Digi-Set Binary Switch Operation
Specifications
Time Delay
Type Digital integrated circuitry
Range 0.1–102.3 s in 0.1 s increments
1–1023 s in 1 s increments
10–10,230 s in 10 s increments
Repeat Accuracy ±0.1 %
Setting Accuracy ±2 %
Reset Time ≤ 150 ms
Time Delay vs Temp.
& Voltage ±5 %
Indicator LED indicates relay is energized
Initiate Time ≤ 60 ms
Input
Voltage 12, 24/28 V dc; 24, 120, or 230 V ac
Tolerance
12 V dc & 24 V dc/ac -15 %–20 %
120 to 230 V ac/dc -20 %–10 %
AC Line Frequency 50/60 Hz
Power Consumption ≤ 3.25W
Output
Type Electromechanical relay
Form SPDT or DPDT
Rating 10 A resistive @ 120/240 V ac;
1/3 hp @ 120/240 V ac
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Protection
Isolation Voltage ≥ 1500 V RMS input to output
Polarity Dc units reverse polarity protected
Mechanical
Mounting Plug-in socket
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D (with socket) 104.78 mm (4.13”)
Termination Octal 8-pin plug-in or 11-pin plug-in
Environmental
Operating/Storage
Temperature -20 °C to 65 °C / -30 °C to 85 °C
Weight ≅ 4 oz (113 g)
Safety Marks
UL (socket required)* UL 508 (E57310)
*UL Listed when used with Part Number OT08-PC or RB08-PC manufactured by
Custom Connector Corp.
Note: Manufacturer's recommended screw terminal torque for the OT series sockets
is 12 in-lbs.
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
Function Diagram 12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 343
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/tdub
TDUB SERIES
L1 N/L2
Description
The TDUB Series combines digital timing circuitry with universal
voltage operation. Voltages of 24 to 240VAC and 12 to 24VDC
are available in three ranges. The TDUB Series offers DIP switch
selectable time delays ranging from 0.1 seconds to 102.3
minutes in three ranges. Its 1A rated output, ability to operate
on multiple voltages, and wide range of switch selectable time
delays make the TDUB Series an excellent choice for process
control systems and OEM equipment.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing.
Upon closure of the initiate switch, the output energizes. The
time delay begins when the initiate switch is opened (trailing
edge triggered). The output remains energized during timing.
At the end of the time delay, the output de-energizes. The output
will energize if the initiate switch is closed when input voltage is
applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
DIP switch timing
adjustment Provides setting accuracy of +/-2%
User selectable
time delay
Timing settings are switch selectable 0.1s - 102.3m
in three ranges for added flexibility
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity.
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Wiring Diagram
V = Voltage
UTL = Optional Untimed Load
S1 = Initiate Switch
L = Timed Load
Delay-on-Break Timer
Ordering Information
MODEL INPUT VOLTAGE RANGE TIME RANGE
TDUB3000A 24 to 120VAC 1-1023s
TDUB3002A 12 to 24VDC 1-1023s
TDUBH3002A 12 to 24VDC 0.1-102.3m
TDUBH3001A 100 to 240VAC 0.1-102.3m
TDUBL3002A 12 to 24VDC 0.1-102.3s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
344 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/tdub
Specifications
Time Delay
Range* 0.1 - 102.3s in 0.1s increments
1 - 1023s in 1s increments
0.1 - 102.3m in 0.1m increments
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Setting Accuracy ≤ ±2% or 20ms, whichever is greater
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs. Temperature
& Voltage ≤ ±5%
Input
Voltage/Tolerance 24 to 240VAC, 12 to 24VDC /±20%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid state
Form NO, closed before and during timing
Rating 1A steady state, 10A inrush at 60°C
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
Off State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Environmental
Operating/Storage
Temperature -40° to 60°C /-40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
TDUB SERIES
Add the value of switches in the ON position
for the total time delay.
Adjustment Switch Operation
Adjustment Switch Operation
Function Diagram
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 345
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/thdb
THDB SERIES
Description
The THDB Series combines accurate timing circuitry with high
power, solid-state switching. It can switch motors, lamps, and
heaters directly without a contactor. You can reduce labor,
component cost, and increase reliability with these small,
easy-to-use, timers.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output energizes. The time
delay begins when the initiate switch is opened. The output
remains energized during timing. At the end of the time delay,
the output de-energizes. The output energizes if the initiate
switch is closed when input voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat accuracy + / - 0.5%,
Factory calibration + / - 1%
High load currents up
to 20A, 200A inrush
Allows direct operation of motors, lamps and
heaters without a contactor
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Metalized
mounting surface Facilitates heat transfer in high current applications
Compact, low
cost design
Allows flexibility for OEM applications and reduces
labor and components costs
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY OUTPUT
RATING
THDB421A 120VAC External 1 - 100s 6A
THDB434C 120VAC Onboard 1 - 100m 20A
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
UTL = Optional Untimed
Load
L = Timed Load
S1 = Initiate Switch
RT is used when external
adjustment is ordered.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 19.
346 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/thdb
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Form NO, closed before & during timing
Maximum Load Current Output Steady State Inrush**
A 6A 60A
B 10A 100A
C 20A 200A
Voltage Drop ≅ 2.5V @ rated current
Off State Leakage Current ≅ 5mA @ 230VAC
Minimum Load Current 100mA
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting ** Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
**Must be bolted to a metal surface using the included heat sink compound. The maximum
surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
THDB SERIES
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 347
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/trb
TRB SERIES
*
*8-pin models UL listed when used in
combination with P1011-6 socket only.
Description
The TRB series combines an isolated, 10 A electromechanical
relay output with digital timing circuitry. False trigger of the TRB
by a transient is unlikely because of the complete isolation of
the circuit from the line prior to initiation. The initiate contact is
common to one side of the line and may be utilized to operate
other loads. Installation is easy due to the TRB’s industry
standard 8- or 11-pin plug-in base wiring.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output relay energizes. The
time delay begins when the initiate switch is opened (trailing
edge triggered). The output remains energized during timing.
At the end of the time delay, the output de-energizes. The
output will energize if the initiate switch is closed when input
voltage is applied.
Reset: Reclosing the initiate switch during timing resets the
time delay. Loss of input voltage resets the time delay and
output.
Features & Benefits
FEATURES BENEFITS
Complete isolation of
circuit from line No false trip due to transients
Industry standard 8 or
11-pin connection Provides easy installation and field replacement
Isolated, 10 A, SPDT or
DPDT output contacts Allows control of loads for ac or dc voltages
Digital circuitry Repeat accuracy +/- 2 %
Wiring Diagram
L1 N/L2
L1 N/L2
L1 N/L2
8-pin octal SPDT
11-pin DPDT
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT OUTPUT FORM TIME TOLERANCE TIME DELAY
TRB120A2Y30 120 V ac Onboard Octal, SPDT +/- 10 % 1–30 s
TRB120A3X600 120 V ac Lock shaft Octal, SPDT +/- 20 % 7–600 s
TRB120A4Y120 120 V ac Onboard 11-pin, DPDT +/- 10 % 2–120 s
TRB24D10Y10 24 V dc/28 V dc Fixed 11-pin, DPDT +/- 10 % 10 s
L1 N/L2
L1 N/L2
L1 N/L2
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 24.
348 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
TRB SERIES
Accessories
OT08PC 8-pin Octal Socket for UL listing*
Octal Socket for plug-in units. 8-pin surface &
DIN rail mountable. Rated for 10 A @ 600 V ac.
OT11PC Octal Socket for UL listing*
11-pin surface & DIN rail mountable. Rated for 10
A @ 300 V ac
P1011-6 Octal Socket for UL listing*
8-pin surface mount socket with binder head
screw terminals. Rated 10 A @ 600 V ac.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Function Diagram
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
Specifications
Time Delay
Type Digital circuitry
Range See "Ordering Information" table
Repeat Accuracy ±2 %
Fixed Time Tolerance
& Setting Accuracy ±5, 10, or 20 %
Initiate Time ≤ 70 ms
Reset Time ≤ 75 ms
Recycle Time ≤ 250 ms
Time Delay vs Temp.
& Voltage ≤±5 %
Input
Voltage 24/28 V dc; 120 V ac
Indicator LED indicates relay is energized
Tolerance
24V dc/ac -15 %–20 %
120 V ac -20 %–10 %
AC Line Frequency 50/60 Hz
Power Consumption ≤ 3.25W
Output
Type Electromechanical relay
Form Isolated SPDT or DPDT
Rating 10 A resistive @ 120/240 V ac
1/3 hp @ 120/240 V ac
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Protection
Insulation Resistance ≥ 100 MΩ
Isolation Voltage ≥ 1500 V RMS between input to output
Polarity Dc units are reverse polarity protected
Mechanical
Mounting Plug-in socket
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D (with socket) 104.78 mm (4.13”)
Termination Octal 8-pin plug-in or 11-pin plug-in
Environmental
Operating/Storage
Temperature -20 °C to 65 °C / -30 °C to 85 °C
Weight ≅ 4 oz (113 g)
Safety Marks
UL (socket required)* UL 508 (E57310)
*UL Listed when used with Part Number OT08-PC, RB08-PC, OT11-PC, or RB11-PC
manufactured by Custom Connector Corp.
Note: Manufacturer’s recommended screw terminal torque for the OT series sockets
is 12 in-lbs.
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 349
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/tsb
TSB SERIES
Description
The TSB Series is a totally solid-state, delay-on-break timing
module. The TSB Series is available with a fixed, external, or
onboard adjustable time delay. Time Delays from 0.05 to 600
seconds, in 4 standard ranges, cover over 90% of all OEM and
commercial appliance timing applications. The repeat accuracy
is ±2%. Operating voltages of 24, 120, or 230VAC are available.
The TSB’s 1A steady state, 10A rated, solid-state output is
perfect for direct control of solenoids, contactors, relays, lamps,
buzzers, and small heaters. The TSB Series can be surface
mounted with a single screw, or snapped on a 35 mm DIN rail
using the P1023-20 adaptor.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output energizes. The time
delay begins when the initiate switch opens. The output remains
energized during timing. At the end of the time delay, the output
de-energizes. The output will energize if the initiate switch is
closed when input voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the output and the time delay.
Features & Benefits
FEATURES BENEFITS
Analog circuitry Repeat accuracy + / - 2%,
Factory calibration + / - 5%
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Wide time delay range Meets almost all OEM and commercial appliance
timing applications
1A steady, 10A inrush
solid state output Provides 100 million operations in typical conditions
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
TSB2190 24VAC Fixed 90s TSB434 120VAC Onboard 5 - 600s
TSB222 24VAC External 0.5 - 60s TSB632 230VAC Onboard 0.5 - 60s
TSB41300 120VAC Fixed 300s TSB634 230VAC Onboard 5 - 600s
TSB422 120VAC External 0.5 - 60s
If you don’t find the part you need, call us for a custom product 800-843-8848
V = Voltage
S1 = Initiate Switch
UTL = Optional Untimed
Load
L = Load
RT is used when external
adjustment is ordered.
L1 N/L2
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
350 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/tsb
Accessories
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Selection Guide
Function Diagram
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
TSB SERIES
Specifications
Time Delay
Range 0.05s - 600s in 4 adjustable ranges or fixed
Repeat Accuracy ±2% or 20ms, whichever is greater
Tolerance
Factory Calibration) ≤ ±5%
Time Delay vs Temp.
& Voltage ≤ ±10%
Reset Time ≤ 150ms
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Form NO, closed before & during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Off State Leakage Current ≅ 5mA @ 230VAC
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 351
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/tsdb
TSDB SERIES
Description
The TSDB Series is designed for more demanding commercial
and industrial applications where small size, and accurate
performance are required. The factory calibration for fixed
time delays is within 1% of the target time delay. The repeat
accuracy, under stable conditions, is 0.5% of the time delay.
The TSDB Series is rated to operate over an extended
temperature range. Time delays of 0.1 seconds to 1000 minutes
are available. The output is rated 1A steady and 10A inrush. The
modules are totally solid state and encapsulated to protect the
electronic circuitry.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output energizes. The time
delay begins when the initiate switch is opened. The output
remains energized during timing. At the end of the time delay,
the output de-energizes. The output will energize if the initiate
switch is closed when input voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat accuracy + / - 0.5%,
Factory calibration + / - 1%
Compact design Allows flexibility for OEM applications
1A Steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Wide temperature
range: -40° to 75°C
Reliable in demanding commercial and
industrial applications
Accessories
P1004-13, P1004-13-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
Wiring Diagram
V = Voltage
UTL = Optional Untimed
Load
L = Timed Load
S1 = Initiate Switch
RT is used when
external adjustment
is ordered.
L1 N/L2
(Positive Switching)
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY SWITCHING
MODE
TSDB320P 24VDC External 0.1 - 10s Positive
TSDB421 120VAC External 1 - 100s n/a
TSDB431 120VAC Onboard 1 - 100s n/a
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
352 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Delay-on-Break
Littelfuse.com/tsdb
Accessories
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
DELAY-ON-BREAK (OFF-DELAY) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
TSDB SERIES
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5 % or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance ±15%
Power Consumption AC ≤ 2VA; DC ≤ 1W
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10 %
Output
Type Solid state
Form NO, closed before & during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Off State Leakage Current ≅ 5mA @ 230VAC; DC ≅ 1mA
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
DC Operation Positive or negative switching
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°F / -40° to 85°F
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 353
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/hrds
HRDS SERIES
Single Shot Timer
Wiring Diagram
Description
The HRDS Series combines an electromechanical relay output
with microcontroller timing circuitry. It offers 12 to 230V
operation in five options and factory fixed, onboard or external
adjustable time delays with a repeat accuracy of ±0.5%. The
output contact rating allows for direct operation of heavy loads,
such as compressors, pumps, blower motors, heaters, etc. This
series is ideal for OEM applications where cost is a factor.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch, the
output relay energizes for a measured interval of time. At the
end of the delay, the output de-energizes. Opening or reclosing
the initiate switch during timing has no affect on the time delay.
The output will energize if the initiate switch is closed when
input voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact, low
cost design Allows flexibility for OEM applications
Isolated, 30A, SPDT,
NO output contacts
Allows direct operation of heavy loads:
compressors, pumps, blower moters, heaters.
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
NO = Normally Open
S1 = Initiate Switch
L = Load
C = Common, Transfer Contact
NOTE: A knob, or terminals
4 & 5 are only included on
adjustable units. RT is used
when external adjustment is
ordered. Relay contacts are
not isolated.
L1 N/L2
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
HRDS120 12VDC Onboard 0.1 - 10s
HRDS313M 24VDC Fixed 3m
HRDS321 24VDC Onboard 1 - 100s
HRDS421 120VAC Onboard 1 - 100s
HRDS430 120VAC External 0.1 - 10s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 17.
354 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/hrds
HRDS SERIES
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
Function Diagram
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 100m in 5 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20 ms, whichever is greater
Tolerance
(Factory Calibration) ±1%, ±5%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ±2%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC -15% - 20%
24 to 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Power Consumption AC ≤ 4VA; DC ≤ 2W
Output
Type Electromechanical relay
Form SPDT, non-isolated
Ratings SPDT-NO SPDT-NC
General Purpose 125/240VAC 30A 15A
Resistive 125/240VAC 30A 15A
28VDC 20A 10A
Motor Load 125VAC 1 hp* 1/4 hp**
240VAC 2 hp** 1 hp**
Life Mechanical - 1 x 106
;
Electrical - 1 x 105
, *3 x 104
, **6,000
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 76.7 mm (3”); W 51.3 mm (2”);
D 38.1 mm (1.5”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C/-40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 355
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/hspza22sl
HSPZA22SL
Description
The HSPZA22SL is a factory programmed module available
in any 1 of 13 standard functions. The HSPZA22SL offers dual
switch adjustable timer or counter functions. Switch adjustment
allows accurate selection of the time delay or number of counts
the first time and every time. The 1A steady, 10A inrush rated
solid-state output provides 100 million operations, typical. Its
microcontroller timing circuit provides excellent repeat accuracy
and stability. Encapsulation protects against shock, vibration,
and humidity. The HSPZA22SL is a cost effective approach for
OEM applications that require small size, solid state reliability,
and accurate switch adjustment.
Operation (Single Shot Lockout)
Upon application of input voltage and momentary or maintained
closure of S1, the output relay energizes and TD1 single shot
time delay begins. The output relay de-energizes at the end of
TD1 and the TD2 lockout time delay begins. During TD2 (and
TD1) closing switch S1 has no effect on the operation. After TD2
is complete, closing S1 starts another operation. If S1 is closed
when input voltage is applied, the output energizes and the TD1
time delay begins.
Reset: Removing input voltage resets the time delays and the
output and returns the cycle to the first delay.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.1%
User selectable
time delay
Timing settings are switch selectable 0.1s - 1023h
in a dual switch timer function for added flexibility
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid-state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
(Positive Switching)
(Negative Switching)
L1 N/L2
S1 = Initiate Switch
UTL = Optional Untimed Load
L = Load
V = Voltage
Wiring Diagram
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 18.
356 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/hspza22sl
Switch Adjustment
Function Diagrams
SINGLE SHOT / LOCKOUT V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
Specifications
Time Delay
Type Microcontroller circuitry
Range 1-1023s, m or h in 1s, m or h increments
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Setting Accuracy ≤ ±1% or 20ms, whichever is greater
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Count Range 1 - 1023 in 2 ranges
Count Rate ≤ 25 counts per second
Input
Voltage 24 to 240VAC
Tolerance ≤ ±15%
AC Line Frequency/
DC Ripple 50/60Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid-state output
Rating 1A steady, 10A inrush for 16ms
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
OFF State Leakage Current AC ≅ 5mA @ 240VAC; DC ≅ 1mA
Counter Output Output pulse width: 300ms ±20%
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 76.2 mm (3.0”); W 50.8 mm (2.0”);
D 38.1 mm (1.5”)
Termination 0.25 in. (6.35 mm) male quick connects
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
HSPZA22SL
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 357
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/relayscontrols
KRDS SERIES
Single Shot
Wiring Diagram
Description
The KRDS Series is a compact time delay relay measuring only
2 in. (50.8 mm) square. Its microcontroller timing circuit provides
excellent repeat accuracy and stability. Encapsulation protects
against shock, vibration, and humidity. The KRDS Series is a cost
effective approach for OEM applications that require small size,
isolation, reliability, and long life.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch, the
output relay energizes for a measured interval of time. At the
end of the delay, the output de-energizes. Opening or reclosing
the initiate switch during timing has no affect on the time delay.
The output will energize if the initiate switch is closed when
input voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Features & Benefits
FEATURES BENEFITS
Compact, low cost
design measuring 2 in.
(50.8mm) square
Allows flexibility for OEM applications
Microcontroller based Repeat Accuracy + / -0.5%,
Factory calibration + / - 5%
Isolated, 10A, SPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated To protect against shock, vibration, and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
L1 N/L2
V = Voltage
S1 = Initiate Switch
C = Common, Transfer Contact
NO = Normally Open
NC = Normally Closed
UTL = Untimed Load
RT is used when external
adjustment is ordered.
A knob is supplied for adjustable
units. The untimed load is optional.
Relay contacts are isolated.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
KRDS1135M 12VDC Fixed 35m
KRDS120 12VDC Onboard 0.1 - 10s
KRDS221 24VAC/DC Onboard 1 - 100s
KRDS420 120VAC Onboard 0.1 - 10s
KRDS421 120VAC Onboard 1 - 100s
KRDS424 120VAC Onboard 1 - 100m
KRDS430 120VAC External 0.1 - 10s
If desired part number is not listed, please call us to see if it is technically possible to build.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
358 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/krds
KRDS SERIES
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Output Current/Ambient Temperature
Specifications
Time Delay
Type Microcontroller with watchdog circuitry
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Initiate Time ≤ 40ms
Time Delay vs Temp.
& Voltage ≤ ±5%
Input
Voltage 12, 24 or 110VDC; 24, 120 or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
110VDC, 120VAC or 230VAC -20%- 10%
AC Line Frequency /DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC;
5A resistive @ 230VAC & 28VDC;
1/4 hp @ 125VAC
Life (Operations) Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C/-40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
Function Diagram
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 359
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/ksds
KSDS SERIES
Wiring Diagram
Description
The KSDS Series is ideal for applications that require momentary
start interval timing including dispensing, exposure timing,
or pulse shaping. This series is available for both AC and DC
voltages. This series is designed for general purpose commercial
and industrial applications where a small, cost effective, reliable
solid-state timer is required. The factory calibration for fixed
time delays is within 5% of the target time delay. The repeat
accuracy, under stable conditions, is 0.5% of the selected time
delay. Time delays of 0.1 seconds to 1000 minutes are available
in 6 ranges. The output is rated 1A steady and 10A inrush. The
modules are totally solid state and encapsulated to protect the
electronic circuitry.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch (leading
edge triggered), the output energizes for a measured interval of
time. At the end of the delay, the output de-energizes. Opening
or reclosing the initiate switch during timing has no affect on the
time delay. The output will not energize if the initiate switch is
closed when input voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
Factory calibration +/- 5%
1A Steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Compact, low
cost design Allows flexibility for OEM applications
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
V = Voltage
UTL = Optional Untimed Load
L = Timed Load
S1 = Initiate Switch
RT is used when external
adjustment is ordered.
L1 N/L2
(Positive Switching)
(Negative Switching)
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY SWITCHING
MODE
KSDS1115SP 12VDC Fixed 15s Positive
KSDS230 24VAC Onboard 0.1 - 10s n/a
KSDS320P 24VAC External 0.1 - 10s Positive
KSDS415M 120VAC Fixed 5m n/a
KSDS420 120VAC External 0.1 - 10s n/a
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
360 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/ksds
KSDS SERIES
Accessories
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5 % or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10 %
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid state
Form NO, closed during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
OFF State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
DC Operation Positive or negative switching
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 361
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/ors
ORS SERIES
Wiring Diagram
Description
The ORS Series’ open PCB construction offers the user good
economy without sacrificing performance and reliability. The
output relay is available in isolated, 10A, DPDT or SPDT forms.
The time delay may be ordered as factory fixed, onboard knob,
or external adjustment. All connections are 0.25 in. (6.35 mm)
male quick connect terminals.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch (leading
edge triggered), the output relay energizes for a measured
interval of time. At the end of the time delay, the output
de-energizes. Opening or reclosing the initiate switch during
timing has no affect on the time delay. The output will energize
if the initiate switch is closed when input voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Features & Benefits
FEATURES BENEFITS
Open PCB construction Reduces cost without sacrificing performance
and reliability
Analog circuitry Repeat accuracy + / - 2%,
Factory calibration + / - 10%
Isolated, 10A, SPDT or
DPDT output contacts Allows control of loads for AC or DC voltages
Line voltage initiation Separate control voltage is not required
for operation
Accessories
P1004-12, P1004-12-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
L1 N/L2 L1 N/L2
SPDT DPDT
V = Voltage
S1 = Initiate Switch
Relay contacts are
isolated.
RT is used when
external adjustment
is ordered.
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY OUTPUT
FORM
ORS120A150SD 120VAC Fixed 50s DPDT
ORS230A150SD 230VAC Fixed 50s DPDT
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 26.
362 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/ors
ORS SERIES
Selection Guide
Function Diagram
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Specifications
Time Delay
Type Analog circuitry
Range 0.05 - 300s in 5 adjustable ranges or fixed
Repeat Accuracy ±2% or 20ms, whichever is greater
Tolerance
(Factory Calibration) Adjustable: guaranteed range
Fixed: ±10%
Reset Time ≤ 50ms
Initiate Time ≤ 70ms
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 24, 120, or 230VAC
Tolerance
24VAC -15% - 20%
120 & 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Power Consumption 2.25W
Output
Type Electromechanical relay
Form Isolated, SPDT or DPDT
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1x107
; Electrical - 1x106
Protection
Isolation Voltage ≥1500V RMS input to output
Mechanical
Mounting Surface mount with four #6 (M3.5 x 0.6) screws
Dimensions H 53.8 mm (2.12”); W 93.7 mm (3.69”);
D 47.8 mm (1.88”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 65°C / -30° to 85°C
Weight ≅ 2.7 oz (77 g)
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 363
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/prs65
PRS65
Single Shot Timer
Wiring Diagram
Description
The PRS65 is a single shot time delay relay for use on noncritical timing applications. The knob adjustable time delay
carries a guaranteed time range of up to 8 minutes.
Operation
Power must be applied to the input at all times prior to and
during timing. Upon closure of the initiate switch (momentary
or maintained) the output contacts transfer and the time delay
is initiated. At the end of the delay interval, the output contacts
revert to their original position. If the initiate switch is reclosed
during timing, the time delay will not be affected.
Features & Benefits
J Electronic Circuit with Electromechanical Relay
J Popular Operating Voltages
J Octal Plug-in
J Hold Down Clamps Available
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 (M 3.5 x 0.6) screws or
snaps onto a 35 mm DIN rail. Uses PSC8 holddown clips.
3
INITIATE
INPUT
VOLTAGE
OCTAL, SPDT
4 5
6
7
1 8
2
Specifications
Time Delay
Type Analog circuitry
Range 7 to 480 seconds
Repeat Accuracy ±2% under fixed conditions
Tolerance Knob adjustable: guaranteed range
Reset Time 80ms max.
Recycle Time
After Timing 16ms max.
During Timing 0.1% of max. time delay or 75ms, whichever
is greater
Time Delay vs. Temp.
& Voltage 15% max.
Input
Voltage 230VAC, nominal
Tolerance ±15% of nominal
AC Line Frequency 50/60 Hz
Output
Type Relay
Form Single Pole, Double Throw
Rating 10 amperes resistive at 240VAC
Protection
Transient ±1500 volts for 150 microseconds
Dielectric Breakdown ≥1500 V rms min. at 60 Hz between input and
output terminals
Mechanical
Mounting Plug in (hold-down clips for panel mounting
also available)
Termination Standard Octal Plug-in
Dimensions H 92.2 mm (3.63”); W 60.45 mm (2.38”);
D 44.45 mm (1.75”)
Environmental
Operating/Storage
Temperature -20° to 65°C / -30° to 85°C
Humidity 95% relative, non-condensing
Weight Approx. 6 oz (170 g)
8-PIN
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 515, Figure 48.
364 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/tds-tdsh-tdsl
TDS / TDSH / TDSL SERIES
Relay Output, Single Shot Time Delay Relay *
Description
The TDS series combines accurate digital circuitry with isolated,
10 A rated, DPDT or SPDT relay contacts in an 8-pin or 11-pin
plug-in package. The TDS series features DIP switch selectable
time delays ranging from 0.1s to 10,230 s in three ranges. The
TDS series is the product of choice for custom control panel and
OEM designers.
Operation (Single Shot)
Input voltage must be applied to the input before and during
timing. Upon momentary or maintained closure of the initiate
switch (leading edge triggered), the output relay energizes for
a measured interval of time. At the end of the delay, the output
de-energizes. Opening or reclosing the initiate switch during
timing has no affect on the time delay. The output will energize if
the initiate switch is closed when input voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Features & Benefits
FEATURES BENEFITS
3 time ranges available
(0.1 s to 2.8 h) Makes it versatile for use in many applications
Microcontroller based
Repeat Accuracy +/- 0.1 % or 20 ms, whichever
is greater; Setting Accuracy +/- 2 % or 50 ms,
whichever is greater
LED indication
(select models) Provides visual indication of relay status
DIP switch adjustment Provides first time setting accuracy
Isolated output contacts Allows control of loads for ac or dc voltages
Wiring Diagram
L1 N/L2
L1 N/L2
8-PIN OCTAL SPDT
11-PIN DPDT
S1 = Initiate Switch
Relay contacts are isolated.
Ordering Information
MODEL INPUT VOLTAGE DELAY RANGE (SEC) LED PLUG TYPE/OUTPUT FORM
TDS120AL 120 V ac 1–1023 in 1 s increments X Octal (8-pin) plug, SPDT
TDS120ALD 120 V ac 1–1023 in 1 s increments X 11-pin plug, DPDT
TDS12D 12 V dc 1–1023 in 1 s increments Octal (8-pin) plug, SPDT
TDS230AL 230 V ac 1–1023 in 1 s increments X Octal (8-pin) plug, SPDT
TDS24AL 24 V ac 1–1023 in 1 s increments X Octal (8-pin) plug, SPDT
TDSH120AL 120 V ac 10–10230 in 10 s increments X Octal (8-pin) plug, SPDT
TDSL120AL 120 V ac 0.1–102.3 in 0.1 s increments X Octal (8-pin) plug, SPDT
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 23.
© 2022 Littelfuse, Inc. 365
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/tds-tdsh-tds
TDS / TDSH / TDSL SERIES
Accessories
OT08PC 8-pin Octal Socket for UL listing*
Octal Socket for plug-in units. 8-pin surface &
DIN rail mountable. Rated for 10 A @ 600 V ac.
OT11PC Octal Socket for UL listing*
11-pin surface & DIN rail mountable. Rated for
10 A @ 300 V ac
P1011-6 Octal Socket for UL listing*
8-pin surface mount socket with binder head
screw terminals. Rated 10 A @ 600 V ac.
Digi-Set Binary Switch Operation
Specifications
Time Delay
Type Digital integrated circuitry
Range 0.1–102.3 s in 0.1 s increments
1–1023 s in 1 s increments
10–10,230 s in 10 s increments
Repeat Accuracy ± 0.1 %
Setting Accuracy ± 2 %
Reset Time ≤ 150 ms
Time Delay vs Temp.
& Voltage ± 5 %
Indicator LED glows during timing; relay is energized
Initiate Time ≤ 60 ms
Input
Voltage 12 V dc; 24, 120, or 230 V ac
Tolerance
12 V dc & 24 V dc/ac -15 %–20 %
110 to 230 V dc/ac -20 %–10 %
AC Line Frequency 50/60 Hz
Power Consumption ≤ 3.25W
Output
Type Electromechanical relay
Form SPDT or DPDT
Rating 10 A resistive @ 120/240 V ac
1/3 hp @ 120/240 V ac
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Protection
Isolation Voltage ≥ 1500 V RMS input to output
Polarity Dc units are reverse polarity protected
Mechanical
Mounting Plug-in socket
Termination Octal 8-pin plug-in or 11-pin plug-in
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D (with socket) 104.78 mm (4.13”)
Environmental
Operating/Storage
Temperature -20 °C to 65 °C/-30 °C to 85 °C
Weight ≅ 4 oz (113 g)
Safety Marks
UL (socket required)* UL 508 (E57310)
*UL Listed when used with Part Number OT08-PC, RB08-PC, OT11-PC, or RB11-PC
manufactured by Custom Connector Corp.
Note: Manufacturer’s recommended screw terminal torque for the OT Series
sockets is 12 in-lbs.
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Function Diagram
12 TIME DELAY RELAYS
366 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/tdus
TDUS SERIES
L1 N/L2
Single Shot Timer
Description
The TDUS Series combines digital timing circuitry with universal
voltage operation. Voltages of 24 to 240VAC and 12 to 24VDC
are available in three ranges. The TDUS Series offers DIP switch
selectable time delays ranging from 0.1 seconds to 102.3
minutes in three ranges. Its 1A rated output, ability to operate
on multiple voltages, and wide range of switch selectable time
delays make the TDUS Series an excellent choice for process
control systems and OEM equipment.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch (leading
edge triggered), the output energizes for a measured interval of
time. At the end of the delay, the output de-energizes. Opening
or reclosing the initiate switch during timing has no affect on
the time delay. The output will energize if the initiate switch is
closed when input voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.1%
Compact design Allows flexibility for OEM applications
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Wiring Diagram
V = Voltage
UTL = Optional Untimed Load
S1 = Initiate Switch
L = Timed Load
Ordering Information
MODEL INPUT VOLTAGE TIME RANGE
TDUS3000A 24 to 120VAC 1 - 1023s
TDUS3001A 100 to 240VAC 1 - 1023s
TDUS3002A 12 to 24VDC 1 - 1023s
TDUSH3001A 100 to 240VAC 0.1 - 102.3m
TDUSL3000A 24 to 120VAC 0.1 - 102.3s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 367
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/tdus
Specifications
Time Delay
Range* 0.1 - 102.3s in 0.1s increments
1 - 1023s in 1s increments
0.1 - 102.3m in 0.1m increments
Repeat Accuracy ±0.5% or 20 ms, whichever is greater
Setting Accuracy ≤ ±2% or 20 ms, whichever is greater
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs. Temperature
& Voltage ≤ ±5%
Input
Voltage/Tolerance 24 to 240VAC, 12 to 24VDC /±20%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid state
Form NO, closed during timing
Rating 1A steady state, 10A inrush at 60°C
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
Off State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1 mA
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
TDUS SERIES
Adjustment Switch Operation
Adjustment Switch Operation
Function Diagram
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
12 TIME DELAY RELAYS
368 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/thc-ths
THC / THS SERIES
Wiring Diagram
Description
The THC/THS Series is a solid-state relay and timer combined
into one compact, easy-to-use control. When mounted to a
metal surface, the THC/THS Series may be used to directly
control lamp or heater loads of up to 20A steady, 200A inrush.
Its single shot function can perform dispensing and pulse
shaping operations. The initiate switch can be a momentary or
maintained type of switch. Time delays can be selected from 0.1
- 600 seconds in 4 ranges. The THC/THS Series is used for coin
vending applications where fast initiate response is required.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch (leading
edge triggered), the output energizes for a measured interval of
time. At the end of the delay, the output de-energizes. Opening
or reclosing the initiate switch during timing has no affect on
the time delay. The output will energize if the initiate switch is
closed when input voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch opens. Loss of input voltage resets the time delay
and output.
Features & Benefits
FEATURES BENEFITS
Analog circuitry Repeat accuracy + / - 2%,
Factory calibration + / - 5%
Compact, low
cost design
Allows flexibility for OEM applications and reduces
labor and component costs
High load currents up to
20A, 200A inrush
Allows direct operation of motors, lamps, and
heaters directly without a contactor
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Metalized
mounting surface Facilitates heat transfer in high current applications
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
L1 N/L2
V = Voltage
S1 = Initiate Switch
L = Timed Load
UTL = Optional Untimed
Load
RT is used when external
adjustment is ordered.
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY OUTPUT
RATING
THC421C 120VAC External 0.1 - 3s 20A
THS422B 120VAC External 0.5 - 60s 10A
THS422C 120VAC External 0.5 - 60s 20A
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 369
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/thc-ths
THC / THS SERIES
Selection Guide
Function Diagram
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Specifications
Time Delay
Range 0.1 - 600s in 4 adjustable ranges or fixed
Repeat Accuracy ±2% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ± 5%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 24, 120, or 230VAC
Tolerance ±15%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Form NO, closed during timing
Maximum Load Currents Output Steady State Inrush**
A 6A 60A
B 10A 100A
C 20A 200A
Minimum Load Current 100mA
Voltage Drop ≅ 2.5V at rated current
OFF State Leakage Current ≅ 5mA @ 230VAC
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥100 MΩ
Mechanical
Mounting ** Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
**Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
12 TIME DELAY RELAYS
370 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/thds
THDS SERIES
Wiring Diagram
Description
The THDS Series combines accurate timing circuitry with high
power solid-state switching. It can switch motors, lamps, and
heaters directly without a contactor. You can reduce labor,
component cost, and increase reliability with these small,
easy-to-use, timers.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch, the
output energizes for a measured interval of time. At the end
of the delay, the output de-energizes. Opening or reclosing the
initiate switch during timing has no affect on the time delay.
The output energizes if the initiate switch is closed when input
voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
Factory calibration +/- 1%
High load currents up
to 20A, 200A inrush
Allows direct operation of motors, lamps and
heaters without a contactor
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Metalized
mounting surface Facilitates heat transfer in high current applications
Compact, low
cost design
Allows flexibility for OEM applications and reduces
labor and component costs
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
L1 N/L2
V = Voltage
UTL = Optional Untimed
Load
L = Timed Load
S1 = Initiate Switch
RT is used when external
adjustment is ordered.
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY OUTPUT
RATING
THDS410.25SA 120VAC Fixed 0.25s 6A
THDS431C 120VAC Onboard 1 - 100s 20A
THDS610.25SA 230VAC Fixed 0.25s 6A
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 371
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/thds
THDS SERIES
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Reset Time ≤150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Form NO, closed during timing
Maximum Load Current Output Steady State Inrush**
A 6A 60A
B 10A 100A
C 20A 200A
Voltage Drop ≅ 2.5V @ rated current
Off State Leakage Current ≅ 5mA @ 230VAC
Minimum Load Current 100mA
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting ** Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
**Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
12 TIME DELAY RELAYS
372 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/trs
TRS SERIES
*
Description
The TRS series combines an isolated, 10 A electromechanical,
relay output with digital timing circuitry. False trigger of the
TRS series by a transient is unlikely because of the complete
isolation of the circuit from the line prior to initiation. The initiate
contact is common to one side of the line and may be utilized to
operate other loads. Installation is easy due to the TRS’s industry
standard 8 or 11-pin plug-in base wiring.
Operation (Single Shot)
Input voltage must be applied to the input before and during
timing. Upon momentary or maintained closure of the initiate
switch (leading edge triggered), the output energizes for a
measured interval of time. At the end of the delay, the output
de-energizes. Opening or reclosing the initiate switch during
timing has no affect on the time delay. Applying input voltage
with the initiate switch closed will energize the load and begin
the time delay.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Features & Benefits
FEATURES BENEFITS
Complete isolation
of circuit from line No false trip due to transients
Industry standard octal
plug connection Eliminates need for special connectors
Isolated, 10 A, SPDT or
DPDT output contacts Allows control of loads for ac or dc voltages
Digital circuitry Repeat accuracy +/- 2 %
Wiring Diagram
L1 N/L2
L1 N/L2
L1 N/L2
8-PIN OCTAL SPDT
11-PIN SPDT
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT OUTPUT FORM TIME TOLERANCE TIME DELAY
TRS120A2X300 120 V ac Knob 8-Pin, Octal, SPDT +/- 20 % 7–300s
TRS120A2Y10 120 V ac Knob 8-Pin, Octal, SPDT +/- 10 % 0.1–10s
TRS24D7Z10 24 V dc/28 V dc External 11-Pin, SPDT
no potentiometer +/- 5 % 0.1–10s
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 24.
© 2022 Littelfuse, Inc. 373
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/trs
TRS SERIES
Accessories
P1011-6 Octal Socket for UL listing*
8-pin surface mount socket with binder head
screw terminals. Rated 10 A @ 600 V ac.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
OT08PC 8-pin Octal Socket for UL listing*
Octal Socket for plug-in units. 8-pin surface &
DIN-rail mountable. Rated for 10 A @ 600 V ac.
OT11PC Octal Socket for UL listing*
11-pin surface & DIN rail mountable. Rated for
10 A @ 300 V ac
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Selection Guides
* Externally adjustable potentiometers. Numbers with
additional “-X” include two pre-soldered 8” wire leads with
1/4” female quick-connect terminals (for clockwise increase).
External RT P/N Selection Table
VALUE PART NUMBER*
100K ohm
100K ohm
P1004-95
P1004-95-X
Specifications
Time Delay
Type Digital circuitry
Range See "Ordering Information" table
Repeat Accuracy ± 2 %
Fixed Time Tolerance &
Setting Accuracy ± 5, 10, or 20 %
Initiate Time ≤ 70 ms
Reset Time ≤ 75 ms
Recycle Time ≤ 250 ms
Time Delay vs Temp.
& Voltage ≤± 5 %
Input
Voltage 24/28 V dc; 24, 120 V ac
Tolerance
24 V dc/ac -15 %–20 %
120 V ac -20 %–10 %
AC Line Frequency 50/60 Hz
Power Consumption ≤ 3.25W
Output
Type Electromechanical relay
Form Isolated SPDT or DPDT
Rating 10 A resistive @ 120/240 V ac & 28 V dc;
1/3 hp @ 120/240 V ac
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Protection
Insulation Resistance ≥ 100 MΩ
Isolation Voltage ≥ 1500 V RMS between input & output terminals
Polarity Dc units are reverse polarity protected
Mechanical
Mounting Plug-in socket
Termination Octal 8-pin plug-in or 11-pin plug-in
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D (with socket) 104.78 mm (4.13”)
Environmental
Operating/Storage
Temperature -20 °C to 65 °C/-30 °C to 85 °C
Weight ≅ 4 oz (113 g)
Safety Marks
UL (socket required)* 4 oz (113 g)
*UL Listed when used with Part Number OT08-PC, RB08-PC, OT11-PC, or RB11-PC
manufactured by Custom Connector Corp.
Note: Manufacturer’s recommended screw terminal torque for the OT series
sockets is 12 in-lbs.
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Function Diagram 12 TIME DELAY RELAYS
374 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/tsds
TSDS SERIES
Wiring Diagram
Description
The TSDS Series is designed for more demanding commercial
and industrial applications where small size and accurate
performance are required. The factory calibration for fixed
time delays is within 1% of the target time delay. The repeat
accuracy, under stable conditions, is 0.5% of the time delay. The
TSDS Series is rated to operate over an extended temperature
range. Time delays of 0.1 seconds to 1000 minutes are available.
The output is rated 1A steady and 10A inrush. The modules are
totally solid state and encapsulated to protect the electronic
circuitry. This product is suitable for many applications, including
dispensing, welding, and exposure timing.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch, the
output energizes for a measured interval of time. At the end
of the delay, the output de-energizes. Opening or reclosing the
initiate switch during timing has no affect on the time delay.
The output will not energize if the initiate switch is closed when
input voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Features & Benefits
FEATURES BENEFITS
Compact, low cost
design measuring 2 in.
(50.8mm) square
Allows flexibility for OEM applications
Microcontroller based Repeat Accuracy + / - 0.5%,
Factory calibration + / - 1%
1A Steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Wide temperature
range: -40° to 75°C
Reliable in demanding commercial and
industrial applications
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
V = Voltage
L = Timed Load
UTL = Optional Untimed Load
S1 = Initiate Switch
RT is used when external
adjustment is ordered.
L1 N/L2
(Positive Switching)
(Negative Switching)
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY SWITCHING
MODE
TSDS2110S 24VAC Fixed 10s n/a
TSDS320N 24VDC External 0.1 - 10s Negative
TSDS321P 24VDC External 1 - 100s Positive
TSDS421 120VAC External 1 - 100s n/a
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 375
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/tsds
TSDS SERIES
Accessories
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance ±15%
Power Consumption AC ≤ 2VA; DC ≤ 1W
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Output
Type Solid state
Form NO, closed during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
Off State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA
DC Operation Positive or negative switching
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
376 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/tss
TSS SERIES
Wiring Diagram
Description
The TSS Series is a totally solid-state timing module. Its 1A
rated, solid-state output provides an excellent method of
time control for exposures, dispensing, or for increasing or
decreasing a switch closure. Time delays from 0.05 to 600
seconds, in 4 ranges, cover 90% of all OEM applications.
Factory calibration of fixed delays is ±5% and the repeat
accuracy is ±2%. The TSS Series can be surface mounted with
a single screw, or snapped on a 35mm DIN rail using the
P1023-20 accessory adaptor.
Operation (Single Shot)
Voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch, the
output energizes for a measured interval of time. At the end
of the delay, the output de-energizes. Opening or reclosing the
initiate switch during timing has no affect on the time delay. The
output will energize if the initiate switch is closed when input
voltage is applied.
Reset: Reset occurs when the time delay is complete and the
initiate switch opens. Loss of input voltage resets the time delay
and output.
Features & Benefits
FEATURES BENEFITS
Analog circuitry Repeat accuracy + / - 2%,
Factory calibration + / - 5%
Compact, low
cost design Allows flexibility for OEM applications
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Surface or DIN
rail mounting Provides flexibility for installation
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
L1 N/L2
V = Voltage
S1 = Initiate Switch
L = Timed Load
UTL = Optional Untimed
Load
RT is used when external
adjustment is ordered.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
TSS410.5 120VAC Fixed 0.5s
TSS421 120VAC External 0.05 - 3s
TSS422 120VAC External 0.5 - 60s
TSS424 120VAC External 5 - 600s
TSS622 230VAC External 0.5 - 60s
TSS624 230VAC External 5 - 600s
If desired part number is not listed, please call us to see if it is technically possible to build.
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 377
Time Delay Relays
Dedicated — Single Shot
Littelfuse.com/tss
TSS SERIES
Accessories
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Selection Guide
Function Diagram
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Specifications
Time Delay
Range 0.05s - 600s in 4 adjustable ranges or fixed
Repeat Accuracy ±2% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Form NO, closed during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Off State Leakage Current ≅ 5mA @ 230VAC
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature - 40° to 75°C / - 40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
378 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/erdi
ERDI SERIES
Description
Econo-Timers are a combination of digital electronics and
an electromechanical relay. DPDT relay output for relay
logic circuits, and isolation of input to output voltages. For
applications, such as interval on, pulse shaping, minimum run
time, etc. The ERD Series is encapsulated to protect the
circuitry from shock, vibration and humidity.
Operation (Interval)
Upon application of input voltage, time delay begins, and output
relay energizes. At the end of time delay, output de-energizes
until input voltage is removed.
Reset: Removing input voltage resets the time delay and
the output.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of initiate switch, output
relay energizes for time delay. At the end of the delay, output
de-energizes. Opening or reclosing initiate switch during timing
has no affect on time delay. Output will energize if initiate switch
is closed when input voltage is applied.
Reset: Reset occurs when time delay is complete & initiate
switch is opened. Loss of input voltage resets time delay
and output.
Features & Benefits
FEATURES BENEFITS
Digital integrated
circuitry
Repeat Accuracy + / - 0.5%,
Factory calibration +/ - 10%
Isolated, 10A, DPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1004-16, P1004-16-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
ERDI436 120VAC External 0.6 - 60s
ERDI6210 230VAC Onboard 1 - 100m
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
2-3 & 7-6 are Normally Open Contacts (NO)
2-4 & 7-5 are Normally Closed Contacts (NC)
L1 N/L2
L1 N/L2
INTERVAL SINGLE SHOT
L1 N/L2
L1 N/L2
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 25.
© 2022 Littelfuse, Inc. 379
Time Delay Relays
Dedicated — Interval
Littelfuse.com/erdi
Selection Guides
Function Diagrams
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
SINGLE SHOT
(PULSE FORMER) V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
Specifications
Time Delay
Type Digital integrated circuitry
Range 0.1s - 500m in 11 adjustable ranges,
0.1s - 1000m fixed
Adjustment External adjust or onboard
Repeat Accuracy ±0.5%
Tolerance
(Factory Calibration) ≤ ±10%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 120VAC or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
120VDC/AC & 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Output
Type Isolated relay contacts
Form DPDT
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Protection
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with two #6 (M3.5 x 0.6)
screws
Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);
D 43.2 mm (1.7”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Environmental
Operating/Storage
Temperature -40° to 65°C / -40° to 85°C
Weight ≅ 5.7 oz (162 g)
ERDI SERIES
12 TIME DELAY RELAYS
380 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/hrdi
HRDI SERIES
Description
The HRDI Series combines an electromechanical relay output
with microcontroller timing circuitry. It offers 12 to 230V
operation in five ranges and factory fixed, external, or onboard
adjustable time delays with a repeat accuracy of ±0.5%. The
output contact rating allows for direct operation of heavy loads,
such as compressors, pumps, blower motors, heaters, etc. This
series is ideal for OEM applications where cost is a factor.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output relay is energized during the time delay. At the end of the
time delay, the output de-energizes and remains de-energized
until input voltage is removed.
Reset: Removing input voltage resets the time delay and
the output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy +/- 0.5%
Compact, low
cost design Allows flexibility for OEM applications
Isolated, 30A, SPDT,
NO output contacts
Allows direct operation of heavy loads:
compressors, pumps, blower moters, heaters.
Encapsulated Protects against shock, vibration, and humidity.
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
L1 N/L2
C = Common, Transfer
Contact
NO = Normally Open
L = Load
NOTE: A knob, or
terminals 4 & 5 are only
included on adjustable
units. RT
Tis used when
external adjustment is
ordered. Relay contacts
are not isolated.
Interval Timer
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
HRDI117S 12VDC Fixed 7s
HRDI421 120VAC Onboard 1 - 100s
HRDI422 120VAC Onboard 10 - 1000s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 17.
© 2022 Littelfuse, Inc. 381
Time Delay Relays
Dedicated — Interval
Littelfuse.com/hrdi
HRDI SERIES
External Resistance vs. Time Delay
Function Diagram
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 100m in 5 adjustable ranges or fixed
Repeat Accuracy ±0.5 % or 20ms, whichever is greater
Tolerance
(Factory Calibration) ±1%, ±5%
Recycle Time ≤ 150ms
Time Delay vs Temp.
& Voltage ±2%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC -15% - 20%
24 to 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Power Consumption AC ≤ 4VA; DC ≤ 2W
Output
Type Electromechanical relay
Form SPDT, non-isolated
Ratings SPDT-NO SPDT-NC
General Purpose 125/240VAC 30A 15A
Resistive 125/240VAC 30A 15A
28VDC 20A 10A
Motor Load 125VAC 1 hp* 1/4 hp**
240VAC 2 hp** 1 hp**
Life Mechanical - 1 x 106
;
Electrical - 1 x 105, *3 x 104, **6,000
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 76.7 mm (3”); W 51.3 mm (2”);
D 38.1 mm (1.5”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
12 TIME DELAY RELAYS
382 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/krdi
KRDI SERIES
Description
The KRDI Series is a compact time-delay relay measuring only
2 in. (50.8 mm) square. Its solid-state timing circuit provides
excellent repeat accuracy and stability. Encapsulation protects
against shock, vibration, and humidity. The KRDI Series is a cost
effective approach for OEM applications that require small size,
isolation, reliability, and long life.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output relay energizes during the time delay. At the end of the
time delay, the output de-energizes and remains de-energized
until input voltage is removed.
Reset: Removing input voltage resets the time delay and
the output.
Features & Benefits
FEATURES BENEFITS
Compact, low cost
design measuring 2 in.
(50.8mm) square
Allows flexibility for OEM applications
Microcontroller based Repeat Accuracy + / - 0.5%,
Factory calibration + / - 5%
Isolated, 10A, SPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
KRDI120 12VDC Onboard knob 0.1 - 10s
KRDI121 12VDC Onboard knob 1 - 100s
KRDI122 12VDC Onboard knob 10 - 1000s
KRDI2110S 24VAC/VDC Fixed 10s
KRDI2160S 24VAC/VDC Fixed 60s
KRDI220 24VAC/VDC Onboard knob 0.1 - 10s
KRDI320 24VDC Onboard knob 0.1 - 10s
KRDI420 120VAC Onboard knob 0.1 - 10s
KRDI424 120VAC Onboard knob 1 - 100m
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
C = Common, Transfer Contact
NO = Normally Open
NC = Normally Closed
A knob is supplied for
adjustable units, or RT
terminals 4 & 5 for external
adjust. See external
adjustment vs time delay
chart.
Relay contacts are isolated.
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 383
Time Delay Relays
Dedicated — Interval
Littelfuse.com/krdi
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Specifications
Time Delay
Range 0.1s - 100m in 5 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ± 5%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±5%
Input
Voltage 12, 24 or 110VDC; 24, 120 or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
110VDC, 120VAC or 230VAC -20% - 10%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC;
5A resistive @ 230VAC & 28VDC;
1/4 hp @ 125VAC
Max. Switching Voltage 250VAC
Life (Operations) Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
External Resistance vs. Time Delay
Output Current/Ambient Temperature
Function Diagram
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
KRDI SERIES
12 TIME DELAY RELAYS
384 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/ksd2
KSD2 SERIES
L1 N/L2
Interval Timer
Description
The KSD2 Series is designed for general purpose commercial
and industrial applications where a small, cost effective, reliable,
solid-state timer is required. The factory calibration for fixed
time delays is within 5% of the target time delay. The repeat
accuracy, under stable conditions, is 0.5% of the selected
time delay. This series is designed for input voltages of 24, 120
or 230VAC. Time delays of 0.1 seconds to 1000 minutes are
available in 6 ranges. The output is rated 1A steady and 10A
inrush. The modules are totally solid state and encapsulated
to protect the electronic circuitry. An excellent choice for most
OEM pulse shaping, maximum run time, and other process
control applications.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output energizes during the time delay. At the end of the time
delay, the output de-energizes and remains de-energized until
input voltage is removed.
Reset: Removing input voltage resets the time delay and
the output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
+ / -5% time delay accuracy
Compact, low
cost design Allows flexibility for OEM applications
1A Steady solid-state
output, 10A inrush Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
Wiring Diagram
RT is used when
external adjustment
is ordered.
Ordering Information
MODEL INPUT VOLTAGE VAC ADJUSTMENT TIME DELAY
KSD2221 24 External 1 - 100s
KSD2413M 120 Fixed 3m
KSD2420 120 External 0.1 - 10s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 385
Time Delay Relays
Dedicated — Interval
Littelfuse.com/ksd2
Accessories
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
KSD2 SERIES
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Time Delay vs. Temperature
& Voltage ≤ ±10%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Form NO, closed during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
OFF State Leakage Current ≅ 5mA @ 230VAC
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
386 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/kspu
KSPU SERIES
L1 N/L2
(Positive Switching)
(Negative Switching)
Description
The KSPU Series is a factory programmed module available
in any 1 of 14 standard functions. The KSPU offers a single
adjustable timer or counter function. Switch adjustment allows
accurate selection of the time delay or number of counts the
first time and every time. The 1A steady, 10A inrush rated
solid-state output provides 100 million operations, typical. Its
microcontroller timing circuit provides excellent repeat accuracy
and stability. Encapsulation protects against shock, vibration,
and humidity. The KSPU Series is a cost effective approach for
OEM applications that require small size, solid state reliability,
and accurate switch adjustment.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.1%
Compact design Allows flexibility for OEM applications
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1015-64 (AWG 14/16), P1015-14 (AWG 18/22)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Wiring Diagram
V = Voltage
S1 = Initiate Switch
L = Load
UTL = Untimed Load
Ordering Information
MODEL INPUT VOLTAGE TIME
DELAY/COUNTS FUNCTION
KSPUA2I 24 to 240VAC 1 - 1023s Interval
KSPUA8C 24 to 240VAC
1 - 1023 counts
(binary) with
pulsed output
Counter with
pulsed output
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 387
Time Delay Relays
Dedicated — Interval
Littelfuse.com/kspu
Specifications
Time Delay
Range* 0.1 - 102.3s, m or h in 0.1s, m or h increments
1 - 1023s, m or h in 1s, m or h increments
1 - 63s or m in 1s or m increments
Repeat Accuracy ±0.1% or 20 ms, whichever is greater
Setting Accuracy ≤ ±1% or 20 ms, whichever is greater
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs. Temperature
& Voltage ≤ ±2%
Input
Voltage/Tolerance 24 to 240VAC, 12 to 120VDC/≤ ±15%
AC Line Frequency/DC Ripple 50/60 Hz/≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid state
Form NO, SPST-NO
Rating 1A steady state, 10A inrush for 16ms
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
Off State Leakage Current AC ≅ 5mA @ 240VAC; DC ≅ 1 mA
Counter Output Output pulse width: 300ms ±20%
Time Delay/Counts Variable 7 & 8
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
KSPU SERIES
Adjustment Switch Operation
*
* for selecting time in minutes or seconds
Adjustment Switch Operation
Function Diagrams
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
V = Voltage
NO = Normally Open
Contact
NC = Normally Closed
Contact
TD = Time Delay
R = Reset
= Undefined Time
12 TIME DELAY RELAYS
388 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tdi-tdih-tdil
TDI / TDIH / TDIL SERIES
Wiring Diagram
MODEL INPUT VOLTAGE TIME DELAY LED
TDI120AL 120 V ac 1–1023 s in
1 s increments Yes
TDI12D 12 V dc 1–1023 s in
1 s increments No
TDIH24AL 24 V ac 10–10,230 s in
10 s increments Yes
TDIL120AL 120 V ac 0.1–102.3 s in
0.1 s increments Yes
TDIL24DL 24 V dc/28 V dc 0.1–102.3 s in
0.1 s increments Yes
L1 N/L2
Relay contacts are
isolated.
Description
The TDI series is an interval timer that combines accurate
digital circuitry with isolated, 10 A rated, DPDT relay contacts
in an 8-pin plug-in package. The TDI series features DIP switch
selectable time delays ranging from 0.1 to 10,230 seconds in
three ranges. The TDI series is the product of choice for custom
control panel and OEM designers.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output relay is energized during the time delay. At the end of the
time delay, the output de-energizes and remains de-energized
until input voltage is removed.
Reset: Removing input voltage resets the time delay and
the output.
Features & Benefits
FEATURES BENEFITS
Digital circuitry Repeat Accuracy + / - 0.1 %,
Setting accuracy + / - 2 %
Isolated, 10 A, DPDT
output contacts Allows control of loads for ac or dc voltages
DIP switch adjustment Provides first time setting accuracy
Industry standard octal
plug connection Eliminates need for special connectors
LED indication
(select models)
Provides visual indication of timing and
output status
Accessories
OT08PC 8-pin Octal Socket for UL listing*
Octal Socket for plug-in units. 8-pin surface &
DIN-rail mountable. Rated for 10 A @ 600 V ac.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Ordering Information
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 23.
© 2022 Littelfuse, Inc. 389
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tdi-tdih-tdil
TDI / TDIH / TDIL SERIES
Specifications
Time Delay
Type Digital integrated circuitry
Range 0.1–102.3 s in 0.1 s increments
1–1023 s in 1 s increments
10 – 10,230 s in 10 s increments
Repeat Accuracy ±0.1 %
Setting Accuracy ±2 %
Reset Time ≤ 150 ms
Time Delay vs Temp.
& Voltage ±5 %
Indicator LED glows during timing; relay is energized
Input
Voltage 12, 24 V dc; 24, 120 V ac
Tolerance
12 V dc & 24 V dc/Ac -15 %–+20 %
120 V ac -20 %–+10 %
AC Line Frequency 50/60 Hz
Power Consumption ≤ 3.25W
Output
Type Electromechanical relay
Form DPDT
Rating 10 A resistive @ 120/240 V ac;
1/3 hp @ 120/240 V ac
Life Mechanical - 1 x107
; Electrical - 1 x 106
Protection
Polarity Dc units are reverse polarity protected
Isolation Voltage ≥ 1500 V RMS input to output
Mechanical
Mounting Plug-in socket
Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”);
D (with socket) 104.78 mm (4.13”)
Termination Octal 8-pin plug-in
Environmental
Operating/Storage
Temperature -20 °C to 65 °C / -30 °C to 85 °C
Weight ≅ 4 oz (113 g)
Safety Marks
UL (socket required)* UL 508 (E57310)
*UL Listed when used with Part Number OT08-PC or RB08-PC manufactured by
Custom Connector Corp.
Note: Manufacturer's recommended screw terminal torque for the OT Series
sockets is 12 in-lbs.
Digi-Set Binary Switch Operation
Function Diagram
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
390 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tdui-tduih-tduil
TDUI / TDUIH / TDUIL SERIES
Description
The TDUI Series combines digital timing circuitry with universal
voltage operation. Voltages of 24 to 240VAC and 12 to 24VDC
are available in three ranges. The TDUI Series offers DIP switch
selectable time delays ranging from 0.1 seconds to 102.3
minutes in three ranges. Its 1A rated output, ability to operate
on multiple voltages, and wide range of switch selectable time
delays make the TDUI Series an excellent choice for process
control systems and OEM equipment.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output energizes during the time delay. At the end of the time
delay, the output de-energizes and remains de-energized until
input voltage is removed.
Reset: Removing input voltage resets the time delay and
the output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
Setting accuracy + / - 2%
Compact design Allows flexibility for OEM applications
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Wide voltage ranges Flexibility to handle multiple voltages found in
control systems and OEM applications
DIP switch Adjustment Provides first time setting accuracy
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Ordering Information
MODEL INPUT VOLTAGE TIME DELAY
TDUI3000A 24 to 120VAC 1 - 1023s
TDUIH3002A 12 to 24VDC 0.1 - 102.3m
TDUIL3001A 100 to 240VAC 0.1 - 102.3s
TDUIL3002A 12 to 24VDC 0.1 - 102.3s
If you don’t find the part you need, call us for a custom product 800-843-8848
Wiring Diagram
L1 N/L2
V = Voltage
L = Load
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 391
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tdui-tduih-tduil
Specifications
Time Delay
Range* 0.1 - 102.3s in 0.1s increments
1 - 1023s in 1s increments
0.1 - 102.3m in 0.1m increments
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Setting Accuracy ≤ ±2% or 20ms, whichever is greater
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±5%
Input
Voltage 24 to 240VAC, 12 to 24VDC ±20%
AC Line Frequency 50/60 Hz
Power Consumption AC ≤ 2VA; DC ≤ 1W
DC Ripple ≤ 10%
Output
Type Solid state
Form NO, closed during timing
Rating 1A steady state, 10A inrush at 60°C
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
OFF State Leakage Current AC ≅ 5mA @ 230VAC; DC≅ 1mA
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
TDUI / TDUIH / TDUIL SERIES
Switch Operation
Adjustment Switch Operation
Function Diagram
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
392 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/thd2
THD2 SERIES
Description
The THD2 Series combines accurate timing circuitry with high
power solid-state switching. It can switch motors, lamps,
and heaters directly without a contactor. You can reduce labor,
component cost, and increase reliability with these small,
easy-to-use, Digi-Power timers.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output energizes during the time delay. At the end of the time
delay, the output de-energizes and remains de-energized until
input voltage is removed.
Reset: Removing input voltage resets the time delay and
the output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
Factory calibration + / - 1%
High load currents up
to 20A, 200A inrush
Allows direct control of motors, lamps and heaters
without a contactor
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Metalized
mounting surface Facilitates heat transfer in high current applications
Compact, low
cost design
Allows flexibility for OEM applications and reduces
labor and components costs
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
L1 N/L2
V = Voltage
L = Load
S1 = Optional Low Current
Initiate Switch
RT is used when external
adjustment is ordered.
Ordering Information
MODEL OUTPUT
RATING
INPUT
VOLTAGE ADJUSTMENT TIME DELAY
THD2C420 20A 120VAC External 0.1 - 10s
THD2C423 20A 120VAC External 0.1 - 10m
THD2C433 20A 120VAC Onboard 0.1 - 10m
THD2C620 20A 230VAC External 0.1 - 10s
THD2C633 20A 230VAC Onboard 0.1 - 10m
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 393
Time Delay Relays
Dedicated — Interval
Littelfuse.com/thd2
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
THD2 SERIES
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Form NO, closed during timing
Maximum Load Current Output Steady State Inrush**
A 6A 60A
B 10A 100A
C 20A 200A
Minimum Load Current 100mA
Voltage Drop ≅ 2.5V at rated current
OFF State Leakage Current ≅ 5mA @ 230VAC
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting ** Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
**Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
12 TIME DELAY RELAYS
394 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/thd7
THD7 SERIES
Description
The THD7 Series utilizes only two terminals connected in series
with the load. Interval timing mode is achieved by using a small
portion of the AC sine wave allowing sufficient voltage for circuit
operation. The THD7 Series can be used for interval or delay-onbreak timing. It is designed to operate large loads directly, such
as motors, heater elements, and motor starters.
Operation (Interval)
Upon application of input voltage, the output energizes and the
time delay begins. The output remains energized throughout the
time delay. At the end of the time delay the output de-energizes
and remains de-energized until power is removed.
Reset: Removing input voltage resets the time delay and
the output.
Operation (Delay-on-Break)
Upon closure of SW1, the load energizes and the timer is reset
(zero voltage across its input terminals). Opening SW1 re-applies
input voltage to the timer, the load remains energized and the
time delay begins. At the end of the time delay the output
de-energizes. If SW1 is open when power is applied, the load
will energize for the time delay then de-energize.
Reset: Reclosing SW1 resets the timer.
Features & Benefits
FEATURES BENEFITS
Digital integrated
circuitry Repeat Accuracy + / - 0.5%
High load currents up
to 20A, 200A inrush
Allows direct operation of motors, lamps and
heaters without a contactor
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration
and humidity
Metalized
mounting surface Facilitates heat transfer in high current applications
Compact, low
cost design
Allows flexibility for OEM applications and reduces
labor and component costs
Accessories
P1004-13, P1004-13-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
Wiring Diagram
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME
DELAY
OUTPUT
RATING
THD7421A 120VAC External 1 - 100s 6A
THD7621C 230VAC External 1 - 100s 20A
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
L = Load
S1 = Initiate Switch
RT is used when
external adjustment
is ordered.
INTERVAL
DELAY-ON-BREAK
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 395
Time Delay Relays
Dedicated — Interval
Littelfuse.com/thd7
Accessories
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
VTP(X)(X) Plug-on Adjustment Module
Mounts on modules with in-line adjustment
terminals. Rated at 0.25W at 55°C. Available in
resistance values from 5KΩ to 5MΩ.
Selection Table for VTP Plug-on Adjustment Accessory
Time Delay VTP P/N
1 - 1-100s
2 - 10-1000s
3 - 0.1-10m
4 - 1-100m
5 - 10-1000m
VTP5G
VTP5K
VTP5N
VTP5P
VTP5R
Selection Guide
THD7 SERIES
Specifications
Time Delay
Type Digital integrated circuitry
Range 1s - 1000m in 5 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±10%
Recycle Time After timing: ≤150ms; During timing: ≤ 350ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Form NO, closed during timing
Rating Output Steady State Inrush**
A 6A 60A
B 10A 100A
C 20A 200A
Effective Voltage Drop
(VLine-VLoad) Input Effective Drop
24VAC ≤ 3V
120VAC ≤ 3V
230VAC ≤ 5V
Minimum Load Current 100mA
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting ** Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
**Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
DELAY-ON-BREAK
L
S1 = Initiate Switch
O = Output
L = Load
TD = Time Delay
R = Reset
= Undefined
Time
Function Diagrams
12 TIME DELAY RELAYS
396 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/ts2-ts6
TS2 / TS6 SERIES
Description
The TS2 Series is designed for 24, 120 or 230VAC and the
TS6 Series is designed for 12 or 24VDC. These series are
capable of controlling load currents of up to 1A steady state,
10A inrush. Encapsulated circuitry and the reliability of a
±2% repeat accuracy make the TS2 and TS6 ideal for cost
sensitive applications.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output energizes during the time delay. At the end of the time
delay, the output de-energizes and remains de-energized until
input voltage is removed.
Reset: Removing input voltage resets the time delay and
the output.
Features & Benefits
FEATURES BENEFITS
Analog circuitry Repeat accuracy + / - 2%,
Factory calibration + / - 10%
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions
Rated for operation
up to 75°C Can be used in the harshest environments
Accessories
A
B P1004-XX (fig. A), P1004-XX-X (fig. B) Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
Wiring Diagram
L1 N/L2
V = Voltage
L = Load
RT is used when external
adjustment is ordered.
Note: TS6 is not reverse
polarity protected.
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY SWITCHING
MODE MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY SWITCHING
MODE
TS22120 24VAC Fixed 20s n/a TS2424 120VAC External 5 - 600s n/a
TS2223 24VAC External 2 - 180s n/a TS6116P 12VDC Fixed 6s Positive
TS2412 120VAC Fixed 2s n/a TS6122P 12VDC External 0.5 - 20s Positive
TS24130 120VAC Fixed 30s n/a TS6123P 12VDC External 2 - 60s Positive
TS2421 120VAC External 0.05 - 3s n/a TS6321P 24VDC External 0.05 - 3s Positive
TS2422 120VAC External 0.5 - 60s n/a TS6323P 24VDC External 2 - 180s Positive
TS2423 120VAC External 2 - 180s n/a
If you don’t find the part you need, call us for a custom product 800-843-8848
TS2
TS6
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 397
Time Delay Relays
Dedicated — Interval
Littelfuse.com/ts2-ts6
Accessories
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
VTP(X)(X) Plug-on Adjustment Module
Mounts on modules with in-line adjustment
terminals. Rated at 0.25W at 55°C. Available in
resistance values from 5KΩ to 5MΩ.
Selection Table for VTP Plug-on Adjustment Accessory
TS6 12VDC
Time Delay VTP P/N
Versa-Pot (potentiometer)
Fig. A P/N Fig. B P/N
1 - 0.05-1s
2 - 0.5-20s
3 - 2-60s
4 - 5-120s
VTP2A
VTP2E
VTP2F
VTP2H
P1004-16
P1004-16
P1004-16
P1004-16
P1004-16-X
P1004-16-X
P1004-16-X
P1004-16-X
TS2 & TS6 All Other Voltages
Time Delay VTP P/N
Versa-Pot (potentiometer)
Fig. A P/N Fig. B P/N
1 - 0.05-3s
2 - 0.5-60s
3 - 2-180s
4 - 5-600s
VTP4B
VTP4F
VTP4J
VTP5N
P1004-12
P1004-12
P1004-12
P1004-13
P1004-12-X
P1004-12-X
P1004-12-X
P1004-13-X
Function Diagram
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
TS2 / TS6 SERIES
Selection Guide
Specifications
Time Delay
Type Analog circuitry
Range
12VDC 0.05 - 120s in 4 adjustable ranges or fixed
(1 MΩ max. RT )
Other Voltages 0.05 - 600s in 4 adjustable ranges or fixed
Repeat Accuracy ±2% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±10%
Time Delay vs Temp.
& Voltage ≤ ±10%
Reset Time ≤ 150ms
Input
Voltage 12 or 24VDC; 24 or20VAC
Tolerance ±15%
DC Ripple 10%
Power Consumption DC ≤ 1W; AC ≤ 2VA
Output
Type Solid state
Form NO, closed during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Voltage Drop DC ≅ 1.0V @ 1A; AC ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Polarity TS6 is not reverse polarity protected
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
398 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tsd2
TSD2 SERIES
L1 N/L2
Interval Timer
Description
The TSD2 Series is designed for more demanding commercial
and industrial applications where small size and accurate
performance are required. The factory calibration for fixed time
delays is within 1% of the target time delay. The repeat accuracy,
under stable conditions, is 0.1% of the time delay. The TSD
Series is rated to operate over an extended temperature range.
Time delays of 0.1 seconds to 100 hours are available. The output
is rated 1A steady and 10A inrush. The modules are totally solid
state and encapsulated to protect the electronic circuitry.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output is energized during the time delay. At the end of the time
delay, the output de-energizes and remains de-energized until
input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.1%,
+ / -1% time delay accuracy
Extended
temperature range
Rated to 75°C operating temperature to withstand
high heat applications.
Compact, low
cost design Allows flexibility for OEM applications
1A Steady solid-state
output, 10A inrush Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
RT is used when
external adjustment
is ordered.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
TSD2411S 120VAC Fixed 1s
TSD24145S 120VAC Fixed 45s
TSD241600S 120VAC Fixed 600s
TSD2434 120VAC Onboard 1 - 100m
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 399
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tsd2
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
Function Diagaram
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
TSD2 SERIES
Specifications
Time Delay
Range 0.1s - 100h in 7 adjustable ranges or fixed
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Reset Time ≤ 150ms
Time Delay vs. Temperature
& Voltage ≤ ±1%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Form NO, closed during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Off State Leakage Current ≅ 5mA @ 230VAC
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
400 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tsd6
TSD6 SERIES
(Positive Switching)
(Negative Switching)
Interval Timer
Description
The TSD6 Series offers total solid-state, interval timing for 12
or 24VDC applications. This series provides either negative
or positive switching. The TSD6 Series is designed for more
demanding commercial and industrial applications where
small size and accurate performance is required. The factory
calibration for fixed time delays is within 1% of the target time
delay. The repeat accuracy, under stable conditions, is 0.1%
of the time delay. The TSD6 Series is rated to operate over an
extended temperature range. Time delays of 0.1 seconds to
100 hours are available. The output is rated 1A steady and 10A
inrush. The modules are totally solid state and encapsulated to
protect the electronic circuitry.
Operation (Interval)
Upon application of input voltage, the time delay begins. The
output energizes during the time delay. At the end of the time
delay, the output de-energizes and remains de-energized until
input voltage is removed.
Reset: Removing input voltage resets the time delay and
the output.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.1%,
+ / -1% time delay accuracy
Extended
temperature range
Rated to 75°C operating temperature to withstand
high heat applications.
Compact, low
cost design Allows flexibility for OEM applications
1A Steady solid-state
output, 10A inrush Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
Wiring Diagram
RT is used when
external adjustment
is ordered.
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY SWITCHING
MODE
TSD6113SP 12VDC Fixed 3s Positive
TSD61115SP 12VDC Fixed 15s Positive
TSD6113SN 12VDC Fixed 3s Negative
TSD6310.8SN 24VDC Fixed 0.8s Negative
TSD631380SP 24VDC Fixed 380s Positive
TSD6320P 24VDC External 0.1 - 10s Positive
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 401
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tsd6
Accessories
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
Function Diagram
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
TSD6 SERIES
Specifications
Time Delay
Range 0.1s - 100h in 7 adjustable ranges or fixed
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Reset Time ≤ 150ms
Time Delay vs. Temperature
& Voltage ≤ ±1%
Input
Voltage 12 or 24VDC
Tolerance ±15%
DC Ripple ±10%
Power Consumption ≤ 1W
Output
Type Solid state, positive or negative switching
Form NO, closed during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Off State Leakage Current ≅ 1mA
Voltage Drop ≅ 1.0V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity Units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
402 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tsd7
TSD7 SERIES
L1 N/L2
Interval/Delay-on-Break Timer
Description
The TSD7 Series utilizes only two terminals connected in series
with the load. Interval timing mode period is achieved by using a
small portion of the AC sine wave allowing sufficient voltage for
circuit operation. It can be used as an interval timer to control or
pulse shape the operation of contactors, solenoids, relays, and
lamp loads. The TSD7 Series can be wired to delay on the break
of a switch for energy saving fan delays.
Operation (Interval)
Upon application of input voltage, the output energizes and the
time delay begins. The output remains energized throughout the
time delay. At the end of the time delay, the output de-energizes
and remains de-energized until power is removed.
Reset: Removing input voltage resets the time delay and
the output.
Operation (Delay-on-Break)
Upon closure of SW1, the load is energized and the timer is
reset (zero volts across its input terminals). Opening SW1 reapplies input voltage to the timer, the load remains energized
and the time delay begins. At the end of the time delay, the
output de-energizes. If SW1 is open when power is applied, the
load will energize for the time delay then de-energize.
Reset: Reclosing SW1 resets the timer.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
+ / -1% time delay accuracy
Extended
temperature range
Rated to 75°C operating temperature to withstand
high heat applications
Compact, low
cost design Allows flexibility for OEM applications
1A steady solid-state
output, 10A inrush Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Two terminal series
load connections
Provides quick and easy installation for new or
existing systems
Wiring Diagram
V = Voltage
L = Load
S1 = Initiate Switch
RT is used when external
adjustment is ordered.
Interval
Delay-on- Break
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
TSD7412S 120VAC Fixed 2s TSD761120S 230VAC Fixed 120s
TSD7414M 120VAC Fixed 4m TSD761180S 230VAC Fixed 180s
TSD7421 120VAC External 1 - 100s TSD7611S 230VAC Fixed 1s
TSD7423 120VAC External 0.1 - 10m TSD7621 230VAC External 1 - 100s
TSD7424 120VAC External 1 - 100m
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 403
Time Delay Relays
Dedicated — Interval
Littelfuse.com/tsd7
Accessories
P1004-13, P1004-13-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting Bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
VTP(X)(X) Plug-on Adjustment Module
Mounts on modules with in-line adjustment
terminals. Rated at 0.25W at 55°C. Available in
resistance values from 5KΩ to 5MΩ.
Selection Table for VTP Plug-on Adjustment Accessory
Time Delay VTP P/N Time Delay VTP P/N
1 - 1-100s
2 - 10-1000s
3 - 0.1-10m
VTP5G
VTP5K
VTP5N
4 - 1-100m
5 - 10-1000m
VTP5P
VTP5R
Selection Guide
Specifications
Time Delay
Type Digital integrated circuitry
Range 1s - 1000m in 5 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±10%
Recycle Time ≤ 400ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Form NO, closed during timing
Maximum Load Current 1A steady state, 10A inrush at 45°C
Minimum Load Current 40mA
Effective Voltage Drop
(VLine-VLoad) Input Effective Drop
24VAC 3V
120VAC 4V
230VAC 6V
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Function Diagrams
INTERVAL (IMPULSE-ON) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
DELAY-ON-BREAK
L
S1 = Initiate Switch
O = Output
L = Load
TD = Time Delay
R = Reset
= Undefined
Time
TSD7 SERIES
V = Voltage
S1 =Initiate Switch
NO = Normally Open
Contact
NC = Normally Closed
Contact
O = Output
L = Load
TD = Time Delay
R = Reset
= Undefined Time
12 TIME DELAY RELAYS
404 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Retriggerable Single Shot
Littelfuse.com/krd9
KRD9 SERIES
Wiring Diagram
Description
The KRD9 Series microcontroller timing circuit provides
excellent repeat accuracy and stability. Cost effective approach
for OEM applications that require small size, isolation, reliability,
and long life.
Operation (Retriggerable Single Shot)
Function Type A (Output Initially De-energized): Input
voltage must be applied prior to and during timing. When the
initiate switch is closed, (momentary or maintained) the output
energizes and the time delay starts. On completion of the delay,
the output de-energizes. The unit will time out if S1 remains in
the open or closed position for the full time delay. Reclosing
the initiate switch resets the time delay and restarts timing; the
output remains energized. The output will not energize if the
initiate switch is closed when input voltage is applied.
Function Type B (Output Initially Energized): Upon application
of input voltage, the output energizes and the time delay starts.
At the end of the time delay, the load de-energizes. The unit will
time out if S1 remains in the open or closed position for the full
time delay. Closing (re-closing) the initiate switch resets the time
delay and restarts timing; the output remains energized.
Reset: The time delay and the output are reset when input
voltage is removed.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
Factory calibration + / - 5%
Compact, low
cost design
Allows flexibility for OEM applications and reduces
labor and component costs
Isolated, 10A, SPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated circuitry Protects against shock, vibration, and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
L1 N/L2
V = Voltage
S1 = Initiate Switch C = Common,
Transfer Contact
UTL = Untimed Load (optional)
A knob is supplied for adjustable
units, or RT terminals 4 & 5 for
external adjust. See external
adjustment vs time delay chart.
The untimed load is optional.
Relay contacts are isolated.
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY FUNCTION
TYPE
KRD9120B 12VDC Onboard 0.1 - 10s Energized
KRD92115MA 24VAC/DC Fixed 15m De-energized
KRD92115MB 24VAC/DC Fixed 15m Energized
KRD9220B 24VAC/DC Onboard 0.1 - 10s Energized
KRD93115MA 24VDC Fixed 15m De-energized
KRD9423B 120VAC Onboard 0.1 - 10m Energized
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 405
Time Delay Relays
Dedicated — Retriggerable Single Shot
Littelfuse.com/krd9
KRD9 SERIES
Accessories
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Output Current/Ambient Temperature
Specifications
Time Delay
Type Microcontroller based with watchdog circuitry
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Initiate Time ≤ 40ms; ≤ 750 operations per minute
Time Delay vs Temp.
& Voltage ≤ ±5%
Input
Voltage 12, 24 or 110VDC; 24, 120 or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - +20%
110VDC, 120 or 230VAC -20% - +10%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC;
5A resistive @ 230VAC & 28VDC;
1/4 hp @ 125VAC
Max. Switching Voltage 250VAC
Life (Operations) Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reversed polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40°to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
Function Diagram
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSD)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
t = Incomplete
Time Delay
TD = Time Delay
R = Reset
12 TIME DELAY RELAYS
406 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Retriggerable Single Shot
Littelfuse.com/tsd94110sb
TSD94110SB
Retriggerable Single-Shot Timer
Wiring Diagram
Description
The TSD94110SB retriggerable single-shot timer is designed
for a variety of appllcations. Its digital circuit provides long or
short delays with accuracy and stability over a wide voltage
and temperature range. It is the ideal timer for pulse-train
monitoring of programmable controllers, or any system
requiring motion detection.
Operation A Type
Power must be applied to input at all times prior to and
during timing. Upon closure of initiate switch (momentary or
maintained) the load is energized and the time delay is started.
On completion of the delay period the load is de-energized.
Should the initiate switch be reclosed during timing, the delay
will be reset to zero and restarted.
Operation B Type
Upon application of input power, the load is energized and a
time delay is started. At the end of the time delay, the load is
de-energized. Should the initiate switch be closed or reclosed
during timing, the delay is reset to zero and restarted.
Features & Benefits
J Excellent Pulse Train Monitor
J Totally Solid State and Encapsulated
J Microcontroller Circuitry
J Fast Reset to Zero During Timing
J Excellent Accuracy and Reliability
J DC Units are Reverse Polarity Protected
Specifications
Time Delay
Type Microcontroller circuitry
Range Factory fixed 10s
Repeat Accuracy ±0.5%
Tolerance
(Factory Calibration) ±1%
Recycle Time 300ms max.
Time Delay vs. Temp.
& Voltage ±2%
Initiate Timing 16ms max. AC
Input
Operating Voltage 120 volts AC
Tolerance ±15%
Output
Type Solid State
Form Normally open
Rating 1 ampere steady state, 10 amperes inrush
at 55°C
Voltage Drop AC 2.5 volts typical at 1 ampere
Protection
Transient Protected
Dielectric 1500 volts RMS
Insulation Resistance 100 megohms minimum 4.4
Mechanical
Mounting Surface mount with one #8 or #1O screw
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Package Molded housing with encapsulated circuitry
Dimensions H 50.80 mm (2.00”); W 50.80 mm (2.00”);
D 30.70 mm (1.21”)
Environmental
Operating/Storage
Temperature -40°C to 60°C / -40°C to 85°C
Humidity 95% relative, non-condensing
Weight Approx. 2.4 oz (68 g)
Function Diagram
RETRIGGERABLE SINGLE SHOT
(MOTION DETECTOR) (PSE)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
t = Incomplete
Time Delay
TD = Time Delay
R = Reset
V = Voltage
L = Timed Load
UTL = Optional Untimed Load
S1 = Initiate Switch
RT is used when external
adjustment is ordered.
L1 N/L2
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 407
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/erd3425A
ERD3425A
L1 N/L2
A knob, or terminals 9 &10
are only included on
adjustable units.
Relay contacts are isolated.
RT is used when external
adjustment is ordered.
Description
Econo-Timers are a combination of digital electronics and a
reliable electromechanical relay. DPDT relay output for relay logic
circuits, and isolation of input to output voltages. Cost effective
for OEM applications, such as duty cycling, drying, washing,
signaling, and flashing.
Operation (Recycling - ON Time First)
Upon application of input voltage, the output relay energizes and
the T1 ON time begins. At the end of the ON time, the output
de-energizes and the T2 OFF time begins. At the end of the OFF
time, the output relay energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
Features & Benefits
FEATURES BENEFITS
Digital integrated
circuitry
Repeat Accuracy + / - 0.5%,
Factory calibration + / - 10%
Isolated, 10A, DPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1004-16, P1004-16-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 25.
408 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/erd3425A
ERD3425A
Specifications
Time Delay
Type Digital integrated circuitry
Range 0.1s - 500m in 11 adjustable ranges
0.1s - 1000m fixed
Adjustment Knob, external adjust, or fixed
Repeat Accuracy ±0.5%
Tolerance
(Factory Calibration) ≤ ±10%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12, 24, or 120VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
120VAC/DC & 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Output
Type Isolated relay contacts
Form DPDT
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Protection
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with two #6 (M3.5 x 0.6) screws
Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);
D 43.2 mm (1.7”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 65°C / -40° to 85°C
Weight ≅ 5.7 oz (162 g)
Selection Guides
Function Diagram
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 409
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/esdr
ESDR SERIES
Description
The ESDR Series offers independent time adjustment of both
delay periods. Adjustment options include fixed, onboard or
external adjust. The ESDR is recommended for air drying,
automatic oiling, life testing, chemical metering and automatic
duty cycling. This series is designed for general purpose
commercial and industrial applications where a small, cost
effective, reliable, solid-state timer is required. The factory
calibration for fixed time delays is <±5%. The repeat accuracy,
under stable conditions, is 0.1% of the selected time delay.
This series is designed for input voltages of 12VDC to 230VAC
in five ranges. Time delays of 0.1 seconds to 1000 minutes are
available in six ranges. The output is rated 1A steady and 10A
inrush. The modules are totally solid state and encapsulated to
protect the electronic circuitry.
Operation (Recycling - ON Time First)
Upon application of input voltage, the output energizes and
the T1, ON time begins. At the end of the ON time, the output
de-energizes and the T2, OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
Operation (Recycling - OFF Time First)
Upon application of input voltage, the T2 OFF time begins. At the
end of the OFF time, the output energizes and the T1 ON time
begins. At the end of the ON time, the output de-energizes and
the cycle repeats as long as input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / -0.1%,
Factory calibration + / - 5%
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
ON/OFF recycling with
independent adjustment
of both time periods
Separate on and off timing settings are knob
adjustable for added flexibility
Compact, low cost
design measuring 2 in.
(50.8mm) square
Allows flexibility for OEM applications
Ordering Information
See next page.
Wiring Diagram
V = Voltage
L = Load
T1 = ON Time
T2 = OFF Time
RT is used when external
adjustment is ordered.
A knob is supplied for
adjustment on the unit;
terminals for external
adjustment.
L1 N/L2
(Positive Switching)
(Negative Switching)
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 16.
410 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/esdr
ESDR SERIES
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT T1 ON TIME FIRST DELAY T2 OFF TIME SWITCHING MODE
ESDR120A0P 12VDC Onboard 0.1 - 10s On time 0.1 - 10s Positive
ESDR120B3P 12VDC Onboard 0.1 - 10s Off time 0.1 - 10m Positive
ESDR123B4P 12VDC Onboard 0.1 - 10m Off time 1 - 100m Positive
ESDR125A5P 12VDC Onboard 10 - 1000m On time 10 - 1000m Positive
ESDR221A2 24VAC Onboard 1 - 100s On time 10 - 1000s n/a
ESDR320A0P 24VDC Onboard 0.1 - 10s On time 0.1 - 10s Postitive
ESDR320A3P 24VDC Onboard 0.1 - 10s On time 0.1 - 10m Positive
ESDR420A0 120VAC Onboard 0.1 - 10s On time 0.1 - 10s n/a
ESDR420A1 120VAC Onboard 0.1 - 10s On time 1 - 100s n/a
ESDR420A4 120VAC Onboard 0.1 - 10s On time 1 - 100m n/a
ESDR420B1 120VAC Onboard 0.1 - 10s Off time 1 - 100s n/a
ESDR420B4 120VAC Onboard 0.1 - 10s Off time 1 - 100m n/a
ESDR421A1 120VAC Onboard 1 - 100s On time 1 - 100s n/a
ESDR421A4 120VAC Onboard 1 - 100s On time 1 - 100m n/a
ESDR423A3 120VAC Onboard 0.1 - 10m On time 0.1 - 10m n/a
ESDR423A4 120VAC Onboard 0.1 - 10m On time 1 - 100m n/a
ESDR424A1 120VAC Onboard 1 - 100m On time 1 - 100s n/a
ESDR450A1 120VAC External 0.1 - 10s On time 1 - 100s n/a
If you don’t find the part you need, call us for a custom product 800-843-8848
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagrams
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
V = Voltage
NO = Normally Open
Contact
NC = Normally Closed
Contact
TD1, TD2 = Time Delay
R = Reset
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 411
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/esdr
ESDR SERIES
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ± 5%
Time Delay vs Temp.
& Voltage ≤ ±2%
Reset Time ≤ 150ms
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance ±20%
Power Consumption AC ≤ 2VA; DC ≤ 1W
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Output
Type Solid state
Maximum Load Current 1A steady state , 10A inrush at 60°C
OFF State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
412 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/hrdr
HRDR SERIES
L1 N/L2
Recycling Timer
Description
The HRDR Series combines an electromechanical relay and
microcontroller timing circuitry. It offers 12 to 230V operation in
five ranges and factory fixed, onboard or externally adjustable
time delays with a repeat accuracy of ±0.5%. The high switching
capacity of the output contacts allow for direct control of heavy
loads like compressors, pumps, motors, heaters and lighting. A
bypass/reset switch option allows operator to interrupt normal
recycling sequence and energize output relay. An excellent
choice for OEM applications.
Operation (Recycling with Reset Switch)
Upon application of input voltage, the ON time T1 begins and
output relay energizes. At the end of the ON time, the output
relay de-energizes and the OFF time T2 begins. At the end of the
OFF time, the output relay energizes and the cycle repeats as
long as input voltage is applied. Some recycling timers have the
OFF time as the first delay.
Reset: Removing input voltage resets output and time delays,
and returns sequence to the first delay.
Bypass/Reset Switch: Closing the normally open bypass/reset
switch energizes the output relay and resets the time delays.
Opening the switch restarts recycling operation with the
first delay.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact, low
cost design Allows flexibility for OEM applications
Isolated, 30A, SPDT,
NO output contacts
Allows direct operation of heavy loads:
compressors, pumps, blower moters, heaters.
Encapsulated Protects against shock, vibration, and humidity
Independent adjustment
of On and Off delays Provides greater flexibility of timing options
Bypass/Reset
switch option
Allows operator to interrupt the timing sequence
and energize the output relay
Wiring Diagram
NO = Normally Open
S1 = Reset Switch
C = Common, Transfer Contact
L = Load
Terminals 4 & 5 and/or 7 & 8
are only included on externally
adjustable units. Relay
contacts are non-isolated.
RT is included when external
adjustment is ordered.
Terminal 6 is included when
Bypass/Reset is selected.
Ordering Information
MODEL INPUT
VOLTAGE EXTERNAL ADJUSTMENT T1 ON TIME OPERATING
SEQUENCE T2 OFF TIME BYPASS / RESET
OPTION
HRDR121A4R 12VDC Both time onboard adj 1 - 100s On time first 1 - 100m Yes
HRDR321A4R 24VDC Both time onboard adj 1 - 100s On time first 1 - 100m Yes
HRDR322B2R 24VDC Both time onboard adj 10 - 1000S Off time first 10 - 1000S Yes
HRDR330A0R 24VDC Both time external adj 0.1 - 10s On time first 0.1 - 10s Yes
HRDR331A1 24VDC Both time external adj 1 - 100s On time first 1 - 100s No
HRDR411SB30MR 120VAC Both times fixed 1s Off time first 30m Yes
HRDR431A1R 120VAC Both times external adj 0.1 - 100s On time first 0.1 - 100s Yes
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 17.
© 2022 Littelfuse, Inc. 413
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/hrdr
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
HRDR SERIES
Specifications
Time Delay
Range 100ms - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ±5%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC -15% - 20%
24 to 230VAC -20% - 10%
AC Line Frequency 50/60 Hz
Power Consumption AC ≤ 4VA; DC ≤ 2W
Output
Type Electromechanical relay
Form SPDT, non-isolated
Ratings SPDT-NO SPDT-NC
General Purpose 125/240VAC 30A 15A
Resistive 125/240VAC 30A 15A
28VDC 20A 10A
Motor Load 125VAC 1 hp* 1/4 hp**
240VAC 2 hp** 1 hp**
Life Mechanical - 1 x 106
;
Electrical - 1 x 105
, *3 x 104
, **6,000
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 76.7 mm (3”); W 51.3 mm (2”);
D 38.1 mm (1.5”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative non-condensing
Weight ≅ 3.9 oz (111 g)
Function Diagram
RECYCLING WITH
RESET SWITCH
12 TIME DELAY RELAYS
414 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/krd3
KRD3 SERIES
Description
The KRD3 Series measures only 2 in. (50.8 mm) square.Its
solid-state timing circuit provides excellent repeat accuracy and
stability. Encapsulation protects against shock, vibration, and
humidity. The KRD3 Series is a cost effective approach for OEM
applications that require small size, isolation, reliability, and
long life.
Operation (Recycling Flasher - ON Time First)
Upon application of input voltage, the output energizes and
the T1 ON time begins. At the end of the ON time, the output
de-energizes and the T2 OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to T1 ON time.
Features & Benefits
FEATURES BENEFITS
Compact, low cost
design measuring 2 in.
(50.8mm) square
Provides greater flexibility for OEM applications and
reduces component and labor costs
Microcontroller based Repeat Accuracy + / -0.5%,
Factory calibration + / - 5%
Isolated, 10A, SPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Wiring Diagram
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME
DELAY
OPERATING
SEQUENCE
KRD3420A 120VAC Onboard knob 0.1 - 10s On time first
KRD3421A 120VAC Onboard knob 1 - 100s On time first
KRD3434A 120VAC External 1 - 100m On time first
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
C = Common, Transfer Contact
NO = Normally Open
NC = Normally Closed
A knob is supplied for adjustable
units, or RT terminals 4 & 5 for
external adjust. See external
adjustment vs time delay chart.
Relay contacts are isolated.
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 415
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/krd3
KRD3 SERIES
External Resistance vs. Time Delay
Output Current/Ambient Temperature
Function Diagram
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Specifications
Time Delay
Range 0.1s - 100m in 5 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ± 5%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±5%
Input
Voltage 12, 24 or 110VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
110VDC, 120 or 230VAC -20% - 10%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC;
5A resistive @ 230VAC & 28VDC;
1/4 hp @ 125VAC
Max. Switching Voltage 250VAC
Life (Operations) Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g) 12 TIME DELAY RELAYS
416 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/krdr
KRDR SERIES
Description
The KRDR Series is a compact time-delay relay measuring only
2 in. (50.8 mm) square. Its solid-state timing circuit provides
excellent repeat accuracy and stability. Encapsulation protects
against shock, vibration, and humidity. The KRDR Series is a cost
effective recycling timer for OEM applications that require small
size, isolation, reliability, and long life.
Operation (Recycling - ON Time First)
Upon application of input voltage, the output relay energizes and
the T2 ON time begins. At the end of the ON time, the output
de-energizes and the T1 OFF time begins. At the end of the OFF
time, the output relay energizes and the cycle repeats as long as
input voltage is applied
Reset: Removing input voltage resets the output and the time
delays, and returns the sequence to the ON time.
Operation (Recycling - OFF Time First)
Upon application of input voltage, the T1 OFF time begins. At
the end of the OFF time, the T2 ON time begins and the load
energizes. At the end of the ON time the load de-energizes, and
the cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to the OFF time.
Features & Benefits
FEATURES BENEFITS
Compact design and
independent adjustment
of ON and OFF times
Provides greater flexibility for OEM applications and
reduces component and labor costs
Microcontroller based Repeat Accuracy + / - 0.5%,
Factory calibration + / - 5%
Isolated, 10A, SPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated Protects against shock, vibration, and humidity
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Wiring Diagram
V = Voltage
C = Common
NO = Normally Open
NC = Normally Closed
T1 = OFF Time
T2 = ON Time
A knob is supplied for
adjustable units.
L1 N/L2
Ordering Information
MODEL INPUT
VOLT. ADJUST. T2 ON
TIME
FIRST
DELAY
T1 OFF
TIME
KRDR115MB25M 12VDC Fixed 5m Off time 25m
KRDR120A0 12VDC Adjustable 0.1 - 10s On time 0.1 - 10s
KRDR121A1 12VDC Adjustable 1 - 100s On time 1 - 100s
KRDR320B0 24VDC Adjustable 0.1 - 10s Off time 0.1 - 10s
KRDR321A4 24VDC Adjustable 1 - 100s On time 1 - 100m
KRDR321B4 24VDC Adjustable 1 - 100s Off time 1 - 100m
KRDR420A3 120VAC Adjustable 0.1 - 10s On time 0.1 - 10m
KRDR421A4 120VAC Adjustable 1 - 100s On time 1 - 100m
KRDR424A0 120VAC Adjustable 1 - 100m On time 0.1 - 10s
KRDR424A4 120VAC Adjustable 1 - 100m On time 1 - 100m
KRDR440.5SA0 120VAC On time
fixed 0.5s On time 0.1 - 10s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 417
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/krdr
KRDR SERIES
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5 % or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±5%
Input
Voltage 12, 24 or 110VDC; 24, 120 or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
110VDC & 120 or 230VAC -20% - 10%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC;
5A resistive @ 230VAC & 28VDC;
1/4 hp @ 125VAC
Max. Switching Voltage 250VAC
Life (Operations) Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
Output Current/Ambient Temperature
Function Diagrams
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1 = OFF Time
TD2 = ON Time
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
V = Voltage
NO = Normally Open
Contact
NC = Normally Closed
Contact
T1 = OFF Time
T2 = ON Time
R = Reset
12 TIME DELAY RELAYS
418 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/ksd3
KSD3 SERIES
Recycling Flasher
Description
The KSD3 Series Digi-Timer is a cost effective approach for
ON/OFF recycling applications. The on time is equal to the
off time. An adjustment of the RT will change the time delays
of both on and off times. This series is designed for general
purpose commercial and industrial applications where a small,
cost effective, reliable, solid-state timer is required. The factory
calibration for fixed time delays is within 5% of the target time
delay. The repeat accuracy, under stable conditions, is 0.5% of
the selected time delay. This series is designed for popular AC
and DC voltages. Time delays of 0.1 seconds to 1000 minutes
are available in 6 ranges. The output is rated 1A steady and 10A
inrush. The modules are totally solid state and encapsulated to
protect the electronic circuitry.
Operation (Recycling Flasher - ON Time First)
Upon application of input voltage, the output energizes and
the T1, ON time begins. At the end of the ON time, the output
de-energizes and the T2 OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the ON time.
Operation (Recycling Flasher - OFF Time First)
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of the ON time the load de-energizes, and
the cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and time
delays and the sequence to the OFF time.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%,
+ / -5% time delay accuracy
Compact, low
cost design Allows flexibility for OEM applications
1A Steady solid-state
output, 10A inrush Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
Wiring Diagram
L1 N/L2
V = Voltage
L = Load
RT is used when
external adjustment
is ordered.
Ordering Information
MODEL INPUT
VOLTAGE ADJUSTMENT TIME DELAY OPERATING
SEQUENCE
KSD3120A 12VDC External 0.1 - 10s ON time first
KSD3310.1SA 24VDC Fixed 0.1s ON time first
KSD3415MA 120VAC Fixed 5m ON time first
KSD3432A 120VAC Onboard 10 - 1000s ON time first
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 419
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/ksd3
Accessories
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
KSD3 SERIES
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance (
Factory Calibration) ≤ ± 5%
Reset Time ≤ 150ms
Time Delay vs. Temperature
& Voltage ≤ ±10%
Input
Voltage 24 or 120VAC; 12 or 24VDC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid state
Maximum Load Current 1A steady state, 10A inrush at 60°C
OFF State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
DC Operation Negative switching only
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Function Diagrams
FLASHER (ON FIRST)
ON time plus OFF time equals one
complete flash.
FLASHER (OFF FIRST)
V = Voltage
L = Load
T1 = ON Time
T2 = OFF Time
T1 ≅ T2
R = Reset
12 TIME DELAY RELAYS
420 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/ksdr
KSDR SERIES
Description
The KSDR Series offers independent time adjustment of
both delay periods. The KSDR Series is recommended for air
drying, automatic oiling, life testing, chemical metering, and
automatic duty cycling. This series is designed for general
purpose commercial and industrial applications where a small,
cost effective, reliable, solid-state timer is required. The factory
calibration for fixed time delays is within ± 5% of the target
delay. The repeat accuracy, under stable conditions, is 0.5%
of the selected time delay. This series is designed for input
voltages of 24, 120 or 230VAC. Time delays of 0.1 seconds to
1000 minutes are available in 6 ranges. The output is rated 1A
steady and 10A inrush. The modules are totally solid state and
encapsulated to protect the electronic circuitry.
Operation (Recycling - ON Time First)
Upon application of input voltage, the output energizes and
the T1, ON time begins. At the end of the ON time, the output
de-energizes and the T2, OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to T1 ON time.
Operation (Recycling - OFF Time First)
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of T1, T2 begins and the load de-energizes.
This cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to T2 OFF time.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / -0.5%,
Factory calibration + / - 5%
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Wide operating
temperature range:
-40° to 75°C
Reliable in demanding commercial and
industrial applications
Compact, low cost
design measuring 2 in.
(50.8mm) square
Allows flexibility for OEM applications
Wiring Diagram
L1 N/L2
V = Voltage
L = Load
RT is used when external
adjustment is ordered.
Ordering Information
MODEL INPUT
VOLTAGE T1 ON TIME FIRST DELAY T2 OFF TIME
KSDR40A0 120VAC 0.1 - 10s On time 0.1 - 10s
KSDR42A4 120VAC 10 - 1000s On time 1 - 100m
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 421
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/ksdr
KSDR SERIES
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick
Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagrams
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Specifications
Time Delay
Range 0.1s - 1000m in 6 ranges
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Rating 1A steady state, 10A inrush at 60°C
Voltage Drop ≅ 2.5V @ 1A
OFF State Leakage Current ≅ 5mA @ 230VAC
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
V = Voltage
NO = Normally Open
Contact
NC = Normally Closed
Contact
TD1, TD2 = Time Delay
R = Reset
12 TIME DELAY RELAYS
422 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/kspd
Specifications
Wiring Diagram
L1 N/L2
(Positive Switching)
(Negative Switching)
V = Voltage
L = Load
S1 = Initiate Switch
UTL = Untimed Load
T1 & RT1 = First Adjustment
T2 & RT2 = Second Adjustment
KSPD SERIES
Description
The KSPD Series is a factory programmed module available
with 1 of 12 standard dual functions. The time delays can be
factory fixed, externally or onboard adjustable, or a combination
of fixed and adjustable. The 1A steady, 10A inrush rated
solid-state output provides 100 million operations, typical. Its
microcontroller timing circuit provides excellent repeat accuracy
and stability. Encapsulation protects against shock, vibration,
and humidity. The KSPD Series is a cost effective approach for
OEM applications that require small size and long life.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact design Allows flexibility for OEM applications
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Solid State Timer
Ordering Information
MODEL INPUT ADJUSTMENT 1 TIME DELAY 1 ADJUSTMENT 2 TIME DELAY 2 FUNCTION
KSPDA2222RXE 24 to 240VAC Onboard 1-100s Onboard 1-100s Recycling/On Time First
KSPDP110M18SRXE 12 to 120VDC
positive switching Fixed 10 mins Fixed 8s Recycling/On Time First
If you don’t find the part you need, call us for a custom product 800-843-8848
Terminal Location for External Adjustment.
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 423
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/kspd
KSPD SERIES
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 1000h in 9 adjustable ranges or fixed
(to 999)
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±2%
Reset Time ≤ 150ms
Initiate Time ≤ 20ms; ≤ 1500 operations per minute
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12 to 120VDC; 24 to 240VAC
Tolerance ≤ ±15%
AC Line Frequency/DC Ripple 50/60Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid-state output
Rating 1A steady, 10A inrush for 16ms
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
OFF State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V rms terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mt. with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connects
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Function Diagrams
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
DELAY-ON-MAKE / DELAY-ON-BREAK V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
= Undefined
Time DELAY-ON-MAKE / INTERVAL V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
DELAY-ON-MAKE / SINGLE SHOT
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
V = Voltage
S1 = Initiate Switch
NO = Normally Open
Contact
NC = Normally Closed
Contact
TD1, TD2 = Time Delay
R = Reset
= Undefined Time
12 TIME DELAY RELAYS
424 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/rs
RS SERIES
Description
The RS Series is a solid-state, encapsulated, recycling timer
designed for tough industrial environments. It is used by many
testing labs as a life cycle tester; by others as a cycle controller.
The RS Series has separate DIP switch adjustments for the
on delay and the off delay. These make accurate adjustment
possible the first time, every time. Time delays of 0.1 seconds
to 1023 hours are available in 4 ranges.
Operation (Recycling - ON Time First)
Upon application of input voltage, the output energizes and
the T1 ON time begins. At the end of the ON time, the output
de-energizes and the T2 OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the ON time.
Operation (Recycling - OFF Time First)
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the output energizes and the T1 ON
time begins. At the end of the ON time, the output de-energizes
and the cycle repeats as long as input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the OFF time.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / -0.1%,
Setting accuracy + / - 2%
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
ON and OFF time
delay settings
Independent adjustment provides greater
timing flexibility
DIP switch adjustment Provides first time setting accuracy
Wiring Diagram
L1 N/L2
V = Voltage
L = Load
Ordering Information
MODEL INPUT
VOLTAGE
FIRST
DELAY T1 ON TIME T2 OFF TIME MODEL INPUT
VOLTAGE
FIRST
DELAY T1 ON TIME T2 OFF TIME
RS1A11 12VDC On time 0.1 - 102.3s in
0.1s increments
0.1 - 102.3s in
0.1s increments RS4A22 120VAC On time 0.1 - 102.3m in
0.1m increments
0.1 - 102.3m in
0.1m increments
RS2B44 24VAC Off time 1 - 1023h in
1h increments
1 - 1023h in
1h increments RS4A24 120VAC On time 0.1 - 102.3m in
0.1m increments
1 - 1023h in
1h increments
RS4A11 120VAC On time 0.1 - 102.3s in
0.1s increments
0.1 - 102.3s in
0.1s increments RS4A33 120VAC On time 1 - 1023m in
1m increments
1 - 1023m in
1m increments
RS4A12 120VAC On time 0.1 - 102.3s in
0.1s increments
0.1 - 102.3m in
0.1m increments RS4B12 120VAC Off time 0.1 - 102.3s in
0.1s increments
0.1 - 102.3m in
0.1m increments
RS4A13 120VAC On time 0.1 - 102.3s in
0.1s increments
1 - 1023m in
1m increments RS6A13 230VAC On time 0.1 - 102.3s in
0.1s increments
1 - 1023m in
1m increments
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 17.
© 2022 Littelfuse, Inc. 425
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/rs
RS SERIES
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Adjustment Switch Operation
Adjustment Switch Operation
Function Diagrams
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Specifications
Time Delay
Range* 0.1 - 102.3s in 0.1s increments
0.1 - 102.3m in 0.1m increments
1 - 1023m in 1m increments
1 - 1023h in 1h increments
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Setting Accuracy ≤ ±2% or 20ms, whichever is greater
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ± 2%
Input
Voltage 12, or 24VDC; 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ ±10%
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid state
Maximum Load Current 1A steady state, 10A inrush at 60°C
OFF State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 76.7 mm (3”); W 50.8 mm (2”);
D 38.1 mm (1.5”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
V = Voltage
NO = Normally Open
Contact
NC = Normally Closed
Contact
TD1, TD2 = Time Delay
R = Reset
12 TIME DELAY RELAYS
426 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/tdr
Description
The TDR Series of time-delay relays are comprised of digital
circuitry and an isolated, 10A relay output. The ON and OFF delays
are selected by means of two, ten position binary switches, which
allow the setting of the desired delay to be precise every time.
Operation (Recycling - ON Time First)
Upon application of input voltage, the green LED glows, the
output relay is energized, the red LED glows, and the T1 ON
time begins. At the end of the ON time, the output
de-energizes, the red LED turns OFF and the T2, OFF time
begins. At the end of the OFF time, the output relay energizes
and the cycle repeats as long as input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
Operation (Recycling - OFF Time First)
Upon application of input voltage, the green LED glows, the T1
OFF time begins, the load is OFF. At the end of the OFF time,
the T2 ON time begins, the load energizes, and the red LED
glows. At the end of the ON time the load de-energizes and
the red LED turns OFF. The cycle repeats until input voltage
is removed.
Reset: Removing input voltage resets the output and the
sequence to the OFF time.
Features & Benefits
FEATURES BENEFITS
ON & OFF time delay
settings Independent adjustment allows for greater flexibility
3 Time Ranges Available
(0.1s to 2.8h) Makes it versatile for use in many applications
Microcontroller based
Repeat Accuracy + / - 0.1% or 20 ms, whichever is
greater; Setting Accuracy + / - 2% or 50 ms,
whichever is greater
DIP switch adjustment Provides first time setting accuracy
Isolated output contacts Allows control of loads for AC or DC voltages
LED indication
(select models) Provides visual indication of relay status
Relay Output, Recycling Time Delay Relay
Wiring Diagram
L1 N/L2
Relay contacts are isolated
TDR SERIES
Ordering Information
MODEL INPUT VOLTAGE LED SEQUENCE ON TIME (SEC) OFF TIME (SEC)
TDR1A22 12VDC ON time first 1-1023 in 1s increments 1-1023 in 1s increments
TDR2A23 24VAC X ON time first 1-1023 in 1s increments 10-10230 in 10s increments
TDR4A11 120VAC X ON time first 0.1-102.3 in 0.1s increments 0.1-102.3 in 0.1s increments
TDR4A12 120VAC X ON time first 0.1-102.3 in 0.1s increments 1-1023 in 1s increments
TDR4A13 120VAC X ON time first 0.1-102.3 in 0.1s increments 10-10230 in 10s increments
TDR4A22 120VAC X ON time first 1-1023 in 1s increments 1-1023 in 1s increments
TDR4A23 120VAC X ON time first 1-1023 in 1s increments 10-10230 in 10s increments
TDR4A33 120VAC X ON time first 10-10230 in 10s increments 10-10230 in 10s increments
TDR4B22 120VAC X OFF time first 1-1023 in 1s increments 1-1023 in 1s increments
TDR4B23 120VAC X OFF time first 1-1023 in 1s increments 10-10230 in 10s increments
TDR6A22 230VAC X ON time first 1-1023 in 1s increments 1-1023 in 1s increments
If you don’t find the part you need, call us for a custom product 800-843-8848
8-PIN
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 23.
© 2022 Littelfuse, Inc. 427
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/tdr
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated
at 10A @ 300VAC. Surface mounted with two
#6 (M 3.5 x 0.6) screws or snaps onto a 35 mm
DIN rail. Uses PSC8 hold-down clips.
PSC8 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use with
NDS-8 Octal Socket. Sold in pairs.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
Binary Switch Operation
** For CE approved applications, power must be removed from the unit when a switch position
is changed.
Function Diagram
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Specifications
Time Delay
Type Digital integrated circuitry
Range** 0.1 - 102.3s in 0.1s increments
1 - 1023s in 1s increments
10 - 10,230s in 10s increments
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Setting Accuracy ±2% or 50ms, whichever is greater
Reset Time ≤ 50ms
Recycle Time ≤ 150ms
Time Delay vs Temp.
& Voltage ±5%
Input
Voltage 12, 24/28, or 110VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
110 to 230VAC/DC -20% - 10%
AC Line Frequency/DC Ripple 50/60 Hz/<=10%
Power Consumption ≤ 3.25W
Input LED Indicator Green; on when input voltage is applied
Output
Type Electromechanical relay
Form DPDT
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1 x 107
; Electrical - 1 x 106
Max. Switching Voltage 250VAC
Relay LED Indicator Red; ON when output relay energizes
Protection
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units reverse polarity protected
Mechanical
Mounting Plug-in socket
Dimensions H 81.3 mm (3.2”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Termination Octal 8-pin plug-in
Environmental
Operating/Storage
Temperature -20° to 65°C/-30° to 85°C
Weight ≅ 6 oz (170 g)
TDR SERIES
12 TIME DELAY RELAYS
428 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/thd3c42a0
THD3C42A0
Description
The THD3C42A0 combines accurate timing circuitry with high
power, solid-state switching. It can switch motors, lamps, and
heaters directly without a contactor. The THD3C42A0 has equal
on and off time delays. A single RT sets both time delays. You
can reduce labor, component cost, and increase reliability with
these small, easy-to-use, Digi-Power timers.
Operation (Recycling Flasher - ON Time First)
Upon application of input voltage, the output energizes and
the T1 ON time begins. At the end of the ON time, the output
de-energizes and the T2 OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to T1 ON time.
Operation (Recycling Flasher - OFF Time First)
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of T1, T2 begins and the load de-energizes.
This cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to T2 OFF time.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / -0.5%,
Factory calibration + / - 1%
Compact, low
cost design
Allows flexibility for OEM applications and reduces
labor and component costs
High load currents up
to 20A, 200A inrush
Allows direct operation of motors, lamps, and
heaters without a contactor
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Metalized
mounting surface Facilitates heat transfer in high current applications
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
L1 N/L2
V = Voltage
L = Load
S1 = Optional Low Current
Initiate Switch
RT is used when external
adjustment is ordered.
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 429
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/Littelfuse.com/thd3c42a0
THD3C42A0
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Adjustment Single variable resistor changes both the
on & off times equally
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Maximum Load Current Steady State Inrush**
20A 200A
Minimum Load Current 100mA
Voltage Drop ≅ 2.5V at rated current
OFF State Leakage Current ≅ 5mA @ 230VAC
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting ** Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
**Must be bolted to a metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
Function Diagrams
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
V = Voltage
NO = Normally Open
Contact
NC = Normally Closed
Contact
TD1, TD2 = Time Delay
R = Reset
12 TIME DELAY RELAYS
430 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/tsd3411s
TSD3411S
L1 N/L2
Recycling Timer
Description
The TSD3411S is a solid-state ON/OFF recycling timer with
the on time always equal to the off time. When time delay
is changed by the RT, both the ON and the OFF periods are
changed. The TSD Series is designed for more demanding
commercial and industrial applications where small size, and
accurate performance is required. The factory calibration for
fixed time delays is within 1% of the target time delay. The
repeat accuracy, under stable conditions, is 0.1% of the time
delay. The TSD3411S is rated to operate over an extended
temperature range. Time delays of 0.1 seconds to 100 hours
are available. The output is rated 1A steady and 10A inrush. The
modules are totally solid state and encapsulated to protect the
electronic circuitry.
Operation (Recycling Flasher - ON Time First)
Upon application of input voltage, the output energizes and
the T1, ON time begins. At the end of the ON time, the output
de-energizes and the T2 OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the T1 ON time.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.1%,
+ / -1% time delay accuracy
Extended
temperature range
Rated to 75°C operating temperature to withstand
high heat applications.
Compact, low
cost design Allows flexibility for OEM applications
1A Steady solid-state
output, 10A inrush Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Wiring Diagram
RT is used when
external adjustment
is ordered.
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 431
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/tsd3411s
External Resistance vs. Time Delay
Function Diagram
FLASHER (ON FIRST)
ON time plus OFF time equals one
complete flash.
TSD3411S
Specifications
Time Delay
Range 0.1s - 100h in 7 adjustable ranges
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±1%
Reset Time ≤ 150ms
Time Delay vs. Temperature
& Voltage ≤ ±1%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Maximum Load Current 1A steady state, 10A inrush at 60°C
Off State Leakage Current ≅ 5mA @ 230VAC
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
V = Voltage
L = Load
T1 = ON Time
T2 = OFF Time
T1 ≅ T2
R = Reset
12 TIME DELAY RELAYS
432 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/tsdr
TSDR SERIES
Description
The TSDR Series is an ON/OFF or OFF/ON recycling timing
module designed to control metering pumps, chemical valves,
flash lamps, or use in energy saving or duty cycling applications.
The TSDR Series is designed for more demanding commercial
and industrial applications where small size and accurate
performance are required. The factory calibration for fixed time
delays is < ±5%. The repeat accuracy, under stable conditions,
is 0.5% of the time delay. The TSDR Series is rated to operate
over an extended temperature range. Time delays of 0.1
seconds to 1000 minutes are available. The output is rated 1A
steady and 10A inrush. The modules are totally solid state and
encapsulated to protect the electronic circuitry.
Operation (Recycling - ON Time First)
Upon application of input voltage, the output energizes and
the T1, ON time begins. At the end of the ON time, the output
de-energizes and the T2, OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the T1 ON time.
Operation (Recycling - OFF Time First)
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of the T1, T2 begins and the load
de-energizes. This cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to T2 OFF time.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat accuracy +/- 0.5%, Factory calibration +/- 5%
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Wide operating
temperature range:
-40° to 75°C
Reliable in demanding commercial and
industrial applications
Compact, low cost
design measuring 2 in.
(50.8mm) square
Allows flexibility for OEM applications
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
Wiring Diagram
L1 N/L2
V = Voltage
L = Load
RT is used when external
adjustment is ordered.
An onboard adjustment,
or terminals 4 & 5
are only included on
adjustable units.
Ordering Information
MODEL INPUT
VOLT. ADJUST. T1 ON
TIME
FIRST
DELAY
T2 OFF
TIME
TSDR215SB18M 24VAC Fixed 5s Off time 18m
TSDR415SB18M 120VAC Fixed 5s Off time 18m
TSDR4412SA1 120VAC
On time
fixed, off
external
12s On time 1 - 100s
TSDR442MA2 120VAC
On time
fixed, off
external
2m On time 10 - 1000s
TSDR4430SA2 120VAC
On time
fixed, off
external
30s On time 10 - 1000s
TSDR610.2SA0.2S 230VAC Fixed 0.2s On time 0.2s
TSDR6110SA30S 230VAC Fixed 10s On time 30s
TSDR612.5SA4.5S 230VAC Fixed 2.5s On time 4.5s
TSDR615SB18M 230VAC Fixed 5s Off time 18m
TSDR6412SA1 230VAC
On time
fixed, off
external
12s On time 1 - 100s
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 433
Time Delay Relays
Dedicated — Recycle
Littelfuse.com/tsdr
TSDR SERIES
Accessories
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick
Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagrams
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±5%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Maximum Load Current 1A steady state, 10A inrush at 60°C
Off State Leakage Current ≅ 5mA @ 230VAC
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
V = Voltage
NO = Normally Open
Contact
NC = Normally Closed
Contact
TD1, TD2 = Time Delay
R = Reset
12 TIME DELAY RELAYS
434 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Percentage
Littelfuse.com/pthf4900dk
PTHF4900DK
L1 N/L2
V = Voltage
L = Load
S1 = Optional
Low Current
Initiate Switch
T1 = ON Time
T2 = OFF Time
RT = 100 KΩ
RT is used when external
adjustment is ordered.
Wiring Diagram
Description
The PTHF4900DK can be used for a variety of applications
from chemical metering, to temperature regulating, to energy
management. The infinite adjustability from 1 to 99% provides
accurate percentage on control over a wide factory fixed cycle
period. When mounted on a metal surface, it can be used to
drive solenoids, contactors, relays, or lamps, up to 20A steady,
200A inrush. The PTHF4900DK is the suggested replacement
for the PT Series.
Operation (Percentage)
Upon application of input voltage, the output energizes and
the T1 ON time begins. At the end of the ON time, the output
de-energizes and the T2 OFF time begins. At the end of the
OFF time, the output energizes and the cycle repeats as long as
input voltage is applied. Increasing the ON time decreases the
OFF time. The total cycle period is equal to the ON time plus the
OFF time. The total cycle period is factory fixed. ON time range
is 1 to 99 percent of cycle period.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the T1 ON time.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat accuracy + / -0.5%,
Factory calibration + / - 5%
ON/OFF recycling
percentage control
1 to 99%
Accurate control over a wide factory fixed
cycle period
Compact, low
cost design
Allows flexibility for OEM applications and reduces
component and labor costs
High load currents up
to 20A, 200A inrush
Allows direct operation of motors, lamps, and
heaters without a contactor
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Metalized
mounting surface Facilitates heat transfer in high current applications
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 435
Time Delay Relays
Dedicated — Percentage
Littelfuse.com/pthf4900dk
PTHF4900DK
Specifications
Time Delay
Type External or onboard knob
Range/External
Adjustment Resistance Adjustable from 1 - 99% / RT = 100 KΩ
Cycle Period Fixed from 10s - 1000m
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Cycle Period Tolerance
(Factory Calibration) ≤ ± 5%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 120 or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Maximum Load Currents Steady State Inrush*
1A 10A
Voltage Drop ≅ 2.5V at rated current
OFF State Leakage Current ≅ 5mA @ 230VAC
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting * Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
6, 10, 20A units: ≅ 3.9 oz (111 g)
*Units rated ≥ 6A must be bolted to a metal surface using the included heat sink compound.
The maximum mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
Function Diagram
PERCENTAGE V = Input Voltage
CP = Cycle Period
L = Load
T1 = ON Time
T2 = OFF Time
R = Reset
L
CP CP CP
12 TIME DELAY RELAYS
436 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Dual Function
Littelfuse.com/tdmb
TDMB SERIES
Delay-on-Make/Delay-on-Break
L1 N/L2
L1 N/L2
8-PIN OCTAL SPDT
11-PIN DPDT
(P/N ends with D)
Wiring Diagram
Description
The TDMB combines both delay-on-make and delay-on-break
functions into one plug-in package. Selection of the time period
is accomplished with dual switches, one for the on delay and
the other for the off delay. SPDT or DPDT output options provide
isolated, 10A switching capability.
Operation (Delay-on-Make/Delay-on-Break)
Input voltage must be applied at all times. The output relay is
de-energized. Upon closure of the initiate switch, the green
LED glows and the delay-on-make time delay (T1) begins. At the
end of T1, the output relay energizes and the red LED glows.
When the initiate switch opens, the green LED turns OFF and
the delay-on-break time delay (T2) begins. At the end of T2, the
output relay de-energizes and the red LED turns OFF.
Reset: Removing input voltage resets time delay and output.
Opening the initiate switch during the delay-on-make delay,
resets T1. Closing the initiate switch during the delay-on-break
delay, resets T2.
Features & Benefits
FEATURES BENEFITS
Digital circuitry Repeat Accuracy + / - 0.1%,
Setting accuracy + / - 2%
Isolated, 10A, SPDT or
DPDT output contacts Allows control of loads for AC or DC voltages
User selectable
Delay-on-Make and
Delay-on-Break
time delay
Timing settings are independently adjustable for
added flexibility
Industry standard octal
plug connection Eliminates need for special connectors
LED Indication Provides visual indication of initiate, timing, and
relay output status
DIP switch adjustment Provides first time setting accuracy
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 screws or snaps onto a
35 mm DIN rail. Uses PSC8 hold-down clips.
NDS-11 11-pin Socket
11-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 screws or snaps onto a
35 mm DIN rail. Uses PSC11 hold-down clips.
PSC8 or PSC11 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use PSC8
with NDS-8 Octal Socket or PSC11 with NDS-11
Socket. Sold in sets of two.
Ordering Information
MODEL INPUT
VOLTAGE
DELAY-ONMAKE
DELAY-ONBREAK PLUG TYPE
TDMB411 120VAC 0.1 - 102.3s in
0.1s increments
0.1 - 102.3s in
0.1s increments
Octal (8-pin)
SPDT
TDMB413D 120VAC 0.1 - 102.3s in
0.1s increments
10 - 10230s in
10s increments 11-pin DPDT
TDMB422 120VAC 1 - 1023s in
1s increments
1 - 1023s in
1s increments
Octal (8-pin)
SPDT
TDMB422D 120VAC 1 - 1023s in
1s increments
1 - 1023s in
1s increments 11-pin DPDT
TDMB622 230VAC 1 - 1023s in
1s increments
1 - 1023s in
1s increments
Octal (8-pin)
SPDT
If you don’t find the part you need, call us for a custom product 800-843-8848
V = Voltage
S1 = Initiate Switch or Thermostat
Relay contacts are isolated.
8-PIN
11-PIN
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 23.
© 2022 Littelfuse, Inc. 437
Time Delay Relays
Dedicated — Dual Function
Littelfuse.com/tdmb
TDMB SERIES
Specifications
Time Delay
Type Microcontroller circuitry
Range** 0.1 - 102.3s in 0.1s increments
1 - 1023s in 1s increments
10 - 10,230s in 10s increments
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Setting Accuracy ≤ ±2% or 50ms, whichever is greater
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Control LED Indicator Green; on when the initiate switch is closed
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC;
24 to 240VAC/DC; 12 to 48VDC
Tolerance
12VDC & 24VDC/AC -15% - 20%
110 to 230VAC/DC -20% - 10%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Electromechanical relay
Form SPDT or DPDT
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 230VAC
Life Mechanical - 1 x107
; Electrical - 1 x 105
Max. Switching Voltage 250VAC
Relay LED Indicator Red; on when output relay energizes
(not included on 12VDC units)
Protection
Insulation Resistance ≥ 100M
Polarity DC units are reverse polarity protected
Isolation Voltage ≥ 1500V RMS input to output
Mechanical
Mounting Plug-in socket
Dimensions H 81.3 mm (3.2”); W 60.7 mm (2.4”);
D 45.2 mm (1.8”)
Termination Octal 8-pin plug-in, magnal 11-pin plug-in
Environmental
Operating/Storage
Temperature -20° to 60°C / -30° to 85°C
Weight ≅ 6 oz (170 g)
** For CE approved applications, power must be removed from the unit when a switch position
is changed.
Digi-Set Binary Switch Operation
Function Diagram
DELAY-ON-MAKE / DELAY-ON-BREAK V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
= Undefined
Time
12 TIME DELAY RELAYS
438 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Dual Function
Littelfuse.com/esd52233
ESD52233
Delay-on-Make/Interval
Wiring Diagram
Description
The ESD5 Series is an accurate, solid-state, delayed interval
timer. It offers a 1A steady, 10A inrush output and is available
with adjustable or fixed time delays of 0.1 seconds to 1000
minutes in six ranges. Input voltages of 24, 120, or 230VAC
are available. Encapsulation offers protection against shock
and vibration. Adjustment options are factory fixed, onboard
or externally adjustable. The repeat accuracy, under stable
conditions, is 0.1%. The factory calibration of the time delay
is ±5%.
Operation (Delayed Interval)
Upon application of input voltage, the T1 delay-on-make time
delay begins and the output remains de-energized. At the end of
this delay, the output energizes and the T2 interval delay begins.
At the end of the interval delay period, the output de-energizes.
Reset: Removing input voltage resets the output and the time
delays, and returns the sequence to the first delay.
Features & Benefits
FEATURES BENEFITS
Compact, low cost
design measuring 2 in.
(50.8mm) square
Allows flexibility for OEM applications and reduces
component and labor costs
Microcontroller based Repeat Accuracy + / - 0.1%,
Factory calibration + / - 5%
1A steady, 10A inrush
solid-state output Provides 100 million operations in typical conditions.
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
L1 N/L2 V = Voltage
L = Load
T1 = Delay-on-Make time
T2 = Interval delay time
RT is the external
adjustment component.
Note: Terminals 4, 5
and/or 7, 8 are included
when external adjustment
is ordered. A knob is
included when onboard
adjust is ordered.
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 439
Time Delay Relays
Dedicated — Dual Function
Littelfuse.com/esd52233
ESD52233
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the RT terminals; as the resistance increases the tie
delay increases.
When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment.
Examples: 1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT.
Function Diagram
DELAY-ON-MAKE / INTERVAL V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
Specifications
Time Delay
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 24VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Power Consumption ≤ 2VA
Output
Type Solid state
Rating 1A steady state, 10A inrush at 60°C
OFF State Leakage Current ≅ 5mA @ 230VAC
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68g)
12 TIME DELAY RELAYS
440 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Dual Function
Littelfuse.com/krpd
Specifications
Wiring Diagram
L1 N/L2
V = Voltage
C = Common, Transfer Contact
NC = Normally Closed
NO = Normally Open
S1 = Initiate Switch
UTL = Untimed Load
A knob is supplied for adjustable
units or RT terminals for external
adjust. The untimed load is optional.
S1 is not used for some functions.
KRPD SERIES
Description
The KRPD Series is a factory programmed time delay relay
available with 1 of 12 standard dual functions. The time delays
can be factory fixed, onboard or externally adjustable or a
combination of fixed and adjustable. The SPDT output relay
contacts offer a full 10A rating with complete isolation. Its
microcontroller timing circuit provides excellent repeat accuracy
and stability. Encapsulation protects against shock, vibration,
and humidity. The KRPD Series is a cost effective approach for
OEM applications that require small size, isolation, accuracy and
long life.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact design Allows flexibility for OEM applications
Isolated, 10A, SPDT
output contacts Allows control of loads for AC or DC voltages
Encapsulated Encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Relay Output Timer
Ordering Information
MODEL INPUT ADJUSTMENT 1 TIME DELAY 1 ADJUSTMENT 2 TIME DELAY 2 FUNCTION
KRPD215S190SMB 24VAC Fixed 5s Fixed 90s Delay-on-Make/Delay-on-Break
KRPD417M113MRXD 120VAC Fixed 7m Fixed 13m Recycling/Off Time First
KRPDA175S130SMI 24 to 240VAC/DC Fixed 75s Fixed 30s Delay-on-Make/Interval
KRPDA2129RXE 24 to 240VAC/DC Onboard 0.1 - 10s Onboard 10 - 1000h Recycling
KRPDD2121MB 12 to 48VDC Onboard 0.1-10s Onboard 0.1-10s Delay-on-Make/Delay-on-Break
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 441
Time Delay Relays
Dedicated — Dual Function
Littelfuse.com/krpd
KRPD SERIES
Output Current/Ambient Temperature
Function Diagrams
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 1000h in 9 adjustable ranges or fixed
(to 999)
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±2%
Reset Time ≤ 150ms
Initiate Time ≤ 40ms; 750 operations per minute
Time Delay vs. Temperature
& Voltage ≤ ±2%
Input
Voltage 12 to 48VDC; 24 to 240VAC/DC
Tolerance
12 to 48VDC -15% - 20%
24 to 240VAC/DC -20% - 10%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC
5A resistive @ 230VAC & 28VDC
1/4 hp @ 125VAC
Max. Switching Voltage 250VAC
Life (Operations) Mechanical - 1 x 107
; Electrical - 1 x 105
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connects
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
DELAY-ON-MAKE / DELAY-ON-BREAK V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
= Undefined
Time
RECYCLING (ON FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
RECYCLE (OFF TIME FIRST) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
ACCUMULATIVE
DELAY-ON-MAKE / INTERVAL
DELAY-ON-MAKE / INTERVAL V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1,TD2 = Time Delay
R = Reset
V = Voltage
S1 = Initiate Switch
NO = Normally Open
Contact
NC = Normally Closed
Contact
TD1, TD2 = Time Delay
R = Reset
= Undefined Time
12 TIME DELAY RELAYS
442 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — HVAC
CT SERIES
L1 N
V = Voltage
FR = Fan Relay
FS = Fan Switch
CR = Compressor Relay
THMS = Wall Thermostat
Delay-on-Make/Delay-on-Break Timer
Description
The CT Series combines a delay-on-make and delay-on-break
time delay into one unit and may be used to control fan delays
in heating and/or cooling equipment. The CT includes bypass
circuitry to allow it to operate with cooling anticipators ≥ 3000
ohms. It is designed to operate in 24VAC control circuits.
Several CT modules may be combined to provide sequencing of
any number of loads and sequencing off of the same loads, such
as electric heating elements.
Operation (Delay-on-Make/Delay-on-Break)
Forced Air Heating or Air Conditioning (as shown): When
the thermostat closes, the compressor relay is immediately
energized. At the end of a fixed delay-on-make delay (T1),
the fan relay is energized. When the thermostat opens, the
compressor relay is de-energized and the delay-on-break delay
is initiated. On completion of the fixed delay-on- break delay
(T2) the fan relay is de-energized. If the thermostat is reclosed
during the delay-on-break delay, the delay-on-break delay is reset
and the fan relay remains energized. If the thermostat is closed
when input voltage is applied, the delay-on-make delay (T1)
begins as normal.
Reset: Removing input voltage resets the output and time delays.
Features & Benefits
FEATURES BENEFITS
Delay-on-Make and
Delay-on-Break in
one unit
Simplifies wiring and installation, and optimizes
efficiency of heating and cooling systems
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Interconnectability with
other CT modules
Combine modules to provide sequencing on of
a number of loads and sequencing off of the
same loads
Accessories
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Wiring Diagram
Ordering Information
MODEL DELAY-ON-MAKE
(FIXED SECONDS)
DELAY-ON-BREAK
(FIXED SECONDS)
CT1S30 1 30
CT1S45 1 45
CT1S8 1 8
CT1S90 1 90
CT30S1 30 1
CT45S45 45 45
CT5S300 5 300
If you don’t find the part you need, call us for a custom product 800-843-8848
Littelfuse.com/ct
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 443
Time Delay Relays
Dedicated — HVAC
Littelfuse.com/ct
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Function Diagram
DELAY-ON-MAKE
DELAY-ON-BREAK
CT SERIES
Specifications
Time Delay
Type Microcontroller
Range 1 - 600s
Repeat Accuracy ±5%
Tolerance
(Factory Calibration) ±20%
Recycle Time ≤ 300ms
Input
Voltage 24VAC
Tolerance ±15%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Form NO
Rating 0.75A steady state, 5A inrush at 55°C
Voltage Drop ≅ 1.25V
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V rms terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick
connect terminals
Environmental
Operating/Storage
Temperature -40° to 70°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Thermostat Anticipator Resistor: ≥ 3000 Ω
V = Voltage
FS = Fan Switch
FR = Fan Relay
T1 = Delay-on-Make
T2 = Delay-on-Break
R = Reset
= Undefined Time
12 TIME DELAY RELAYS
444 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — HVAC
T2D120A15M
Lockout
Wiring Diagram
Description
The T2D provides protection against short cycling of
compressors and other motors. At the end of each operation,
a lockout delay prevents restarting the compressor or motor
until the delay is completed. 24VAC models can be used with
thermostats that include a cooling anticipator resistor. It can be
connected in series with the load for delay-on-make operation.
Operation (Lockout with Random Start)
Connection #1: Upon application of input voltage, a random
start time delay begins. At the end of this time delay, the output
is energized.
Lockout Delay: Input voltage must be applied prior to and
during timing. When the thermostat or initiate switch opens,
the output de-energizes and the lockout time delay begins. At
the end of the lockout delay, the output is energized allowing
the load to immediately energize when the initiate switch or
thermostat closes.
Connection #2: Upon application of input voltage and closure
of initiate switch, the time delay begins. At the end of the time
delay, the output is energized and remains energized until power
is removed.
Reset: Removing power resets the output and the time delay.
Features & Benefits
FEATURES BENEFITS
Lockout delay Prevents rapid cycling of compressor
Random start delay Prevents low voltage starting
Analog circuitry Repeat Accuracy + / - 1%
Compact design Allows flexibility for OEM applications
1A steady, 10A
inrush output Provides 100 million operations in typical conditions.
Totally solid state and
fully encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration
and humidity
L1 N/L2
L1 N/L2
V = Voltage
L = Load
S1 = Initiate Switch or Thermostat
RANDOM START PLUS LOCKOUT
DELAY-ON-MAKE
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Littelfuse.com/t2d120a15m
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 445
Time Delay Relays
Dedicated — HVAC
Littelfuse.com/t2d120a15m
T2D120A15M
Specifications
Input
Voltage 120/230VAC in 2 ranges
Tolerance ±20%
AC Line Frequency 50/60 Hz
Output
Minimum Load Current 24VAC - 100mA; 120/230VAC - 40mA
Rating 1A steady state, 10A inrush at 60°C
Voltage Drop ≅ 2.5V @ 1A
Time Delay
Initiate Time After timing - 16ms
Type Analog circuitry
Lockout & Random
Start Delays 1s - 100m in 4 adjustable ranges or fixed
Note: The lockout & random start delays are the
same length.
Tolerance Adjustable: ±30%; factory fixed: ±30%
Repeat Accuracy ±1% or 20ms, whichever is greater
Reset Time After timing - ≤ 16ms;
During timing - ≤ 200ms
Protection
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Cooling Anticipator
(24VAC Units Only)
Minimum Cooling Anticipator ≥ 3,000 Ω
Function Diagram
V = Voltage
S1 = Initiate Switch
L = Load (CR)
E = Ready
TD = Time Delay
R = Reset
RANDOM START
PLUS LOCKOUT
DELAY-ON-MAKE
L
L
E
E
12 TIME DELAY RELAYS
446 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — HVAC
TA SERIES
Lockout
Wiring Diagram
Description
The TA Series prevents rapid recycling of a compressor. A
lockout delay is started when the thermostat opens, or input
voltage is lost. Eliminates tripped circuit breakers or blown
fuses caused by a locked rotor during short cycling. The TA
will not allow the compressor to start when the line voltage
is low. Chatter of the compressor relay is eliminated. Because
of the fast initiate time, bounce of the thermostat will not be
transmitted to the compressor relay coil. A 30 second delay
provides anti-reversing protection for scroll compressors.
Operation (Lockout)
On initial closure of the S1, the compressor relay energizes
immediately. When S1 opens or input voltage is interrupted, a
lockout time delay is initiated. During this lockout time delay,
the compressor relay cannot be energized. The low voltage
(brownout) protection prevents energization of the compressor
when the line voltage is low.
Reset: The lockout time delay cannot be reset. After the time
delay is completed, the unit automatically resets.
Features & Benefits
FEATURES BENEFITS
Lockout delay
Prevents rapid cycling of compressor and eliminates
nuisance service calls due to blown fuse or tripped
breaker by locked rotor during short cycling
Anti-reversing protection
for scroll compressors Extends life of equipment
Brownout protection Timer will not allow the compressor to start during
low line voltage conditions
Encapsulated Protects against shock, vibration, and humidity
1A solid state output No moving parts to arc and wear out. Provides up to
100 million operations under typical conditions
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Ordering Information
MODEL INPUT VOLTAGE TIME DELAY
TA12D1 12VDC 1m
TA12D2 12VDC 2m
TA24A0.5 24VAC 30s
TA24A3 24VAC 3m
TA24A5 24VAC 5m
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N
V = Voltage
S1 = Initiate Switch,
Contact, or
Thermostat
CR = Compressor Relay
(Load)
CA = Optional Cooling
Anticipator
Littelfuse.com/ta
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 447
Time Delay Relays
Dedicated — HVAC
Littelfuse.com/ta
TA SERIES
Specifications
Input
Voltage 12 or 24VDC; 24VAC
AC Line Frequency 50/60 Hz
Impedance 450 Ω (anticipator by-pass)
Output
Minimum Load Current 75mA
Maximum Load Current 1A at 60°C
Voltage Drop ≤ 1.25V
Time Delay
Initiate Time ≅ 16ms
Lockout Time Fixed 0.5, 1, 2, 3, or 5m
Tolerance -15% - 35%
Protection
Circuitry Encapsulated
Low Voltage Protection ≅ 20V: 24VAC/DC; ≅ 9V: 12VDC
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 70°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Thermostat
Cooling Anticipator Resistor ≥ 1800 Ω
Function Diagram
LOCKOUT
L
E
V = Voltage
S1 = Initiate Switch
L = Load (CR)
E = Ready
TD = Time Delay
R = Reset
12 TIME DELAY RELAYS
448 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — HVAC
TAC1 SERIES
Delay-on-Make
Wiring Diagram
Description
The TAC1 Series was designed to delay the operation of a
compressor relay. It eliminates the possibility of relay chatter
due to half-wave failure of the output. It connects in series with
the load relay coil and provides a delay-on-make time delay
each time input voltage is applied. It can be used for random
start, anti-short cycling, sequencing, and many other
applications. It is an excellent choice for all air conditioning and
refrigeration equipment.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
Analog circuitry Repeat accuracy + / - 2%,
Factory calibration + / - 20%
0.5A steady state,
10A inrush Provides 100 million operations in typical conditions.
Connects in series with
load relay coil Fail-safe design eliminates contactor chatter
Meets UL 873 UL Recognized for air conditioning and
refrigeration equipment
Fully encapsulated Protects against shock, vibration and humidity
Accessories
P1004-XX, P1004-XX-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Ordering Information
MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY
TAC1223 24VAC External 2 - 180s
TAC1411 120VAC Fixed 1s
TAC1412 120VAC Fixed 2s
TAC1413 120VAC Fixed 3s
TAC14164 120VAC Fixed 64s
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
L = Load
Load may be connected
to terminals 3 or 1.
RT is used when external
adjustment is ordered.
Littelfuse.com/tac1
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 449
Time Delay Relays
Dedicated — HVAC
Littelfuse.com/tac1
TAC1 SERIES
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
VTP(X)(X) Plug-on Adjustment Module
Mounts on modules with in-line adjustment
terminals. Rated at 0.25W at 55°C. Available in
resistance values from 5KΩ to 5MΩ.
Selection Table for VTP Plug-on Adjustment Accessory
Time Delay VTP P/N
1 - 0.05-3s
2 - 0.5-60s
3 - 2-180s
4 - 5-600s
VTP4B
VTP4F
VTP4J
VTP5N
Selection Guide
Function Diagram
DELAY-ON-MAKE (ON-DELAY) V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
Specifications
Time Delay
Type Analog circuitry
Range 0.05 - 600s in 4 adjustable ranges or fixed
Repeat Accuracy ±2%
Tolerance
(Factory Calibration) ±20%
Recycle Time ≤ 20ms after timing, during timing - 0.1%
of time delay or 75ms, whichever is greater
Time Delay vs Temp.
& Voltage ≤ ±10%
Input
Voltage 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Form NO, open during timing
Rating 0.5A steady state, 10A inrush at 60°C
Voltage Drop 120 & 230VAC: ≅ 4.2V @ 0.5A
24VAC: ≅ 2.5V @ 0.5A
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 80°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
12 TIME DELAY RELAYS
450 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — HVAC
TL SERIES
Lockout
Wiring Diagram
Description
The TL Series provides protection against short cycling of a
compressor. At the end of each operation, or whenever power
is lost, a lockout delay is initiated. This lockout delay prevents
restarting of the compressor until the head pressure has
equalized. Compressor relay chatter due to thermostat bounce
is eliminated by use of optional one second delay-on-make. The
TL Series should not be used with cooling anticipator resistors
or solid-state switches. (See the TA Series).
Operation (Lockout)
Lockout: On initial closure of S1, the compressor relay energizes
immediately (or after an optional 1s delay). When the S1 opens
or input voltage is interrupted, the output opens and remains
open for the lockout time delay. During this lockout time delay
period, the compressor relay cannot be re-energized.
Reset: The lockout time delay cannot be reset. After the time
delay is completed, the unit automatically resets.
Features & Benefits
FEATURES BENEFITS
Lockout delay
Prevents rapid cycling of compressor and eliminates
nuisance service calls due to blown fuse or tripped
breaker by locked rotor during short cycling.
One second
Delay-on-Make
(models ending in T)
Eliminates contactor chatter due to
thermostat bounce
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
1A steady, 10A inrush,
solid state output Provides 100 million operations in typical conditions
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Ordering Information
MODEL INPUT VOLTAGE LOCKOUT TIME DELAY-ON-MAKE
TL120A5T 120VAC 5m 1s
TL230A5 230VAC 5m No delay
TL24A5T 24VAC 5m 1s
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
S1 = Initiate Switch
CR = Compressor or
Control Relay
Littelfuse.com/tl
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 451
Time Delay Relays
Dedicated — HVAC
Littelfuse.com/tl
TL SERIES
Specifications
Input
Voltage 24, 120, or 230VAC
AC Line Frequency 50/60 Hz
Tolerance ±20%
Output
Minimum Load Current ≤ 40mA
Maximum Load Current 1A @ 24VAC; 0.5A @ 120 & 230VAC at 60°C
Inrush Current 10A at 60°C
Voltage Drop 24VAC - 2.5V @ 1A
120 & 230VAC - 4.2V @ 0.5A
Time Delay
Initiate Time ≅ 8ms
Lockout Time* Fixed 2, 3, or 5m
Tolerance -15% - 35%
Option 1s delay-on-make eliminates contactor chatter
due to thermostat bounce
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 70°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
*Power must be applied for at least 15 s to achieve a full lockout delay. Less than 15 s will result
in proportionally shorter delay periods.
NOTE: Cooling anticipator resistor or leakage may cause erratic operation. See TA Series for use
with 24VAC systems that include anticipator resistors or use solid-state switches.
Function Diagram
LOCKOUT
L
E
V = Voltage
S1 = Initiate Switch
L = Load (CR)
E = Ready
TD = Time Delay
R = Reset
12 TIME DELAY RELAYS
452 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — HVAC
TSA141300
Anti-Short Cycle, Solid State Timer
Wiring Diagram
Description
The TSA141300 utilizes unique circuitry to provide random start
and lockout delay in one small, rugged, inexpensive package.
When connected as shown, the TSA141300 in a multiple unit
situation, prevents all units from starting at one time with
its random start feature. The TSA141300 also prevents the
compressor from recycling rapidly which could result in a lock
rotor condition. This lockout delay is initiated at the end of each
operation of the compressor. A momentary loss of power would
also initiate the lockout delay.
Operation
Random Start: With the thermostat closed, when line voltage
is applied to system, a time delay is initiated. At the end of this
delay, the compressor relay will be energized. (Random Start
delay is equal to lockout delay.)
Anti-Short Cycle: At the end of each cycle, when the
thermostat opens, a lockout delay is initiated which prevents
re-energization of the compressor relay during this period. If
the thermostat is closed after the time delay is completed, the
compressor relay will energize Immediately.
Loss of Power: If there is a momentary loss of power, the
lockout will again be initiated preventing the compressor relay
from energizing for the duration of the delay.
Features & Benefits
J Lockout Delay—prevents rapid recycling of compressor in
air conditioning, refrigeration, and heat pump equipment
J Random Start Delay—provides staggered start up of
multiple units
J Fast response time
J All Solid State with Encapsulated Circuitry
COMPRESSOR
RELAY
LINE
R
3 2
1
AUX
CONTACT
OVERLOAD
THERMOSTAT
Specifications
Time Delay
Type Factory fixed 5 minutes
Repeat Accuracy ± 5% under fixed conditions
Tolerance Factory calibration: ± 15%
Time Delay vs. Temperature ± 10% max.
Input
Voltage 120 volts AC
Tolerance ± 20% of nominal
AC Line Frequency 50/60 Hz
Output
Type Solid State
Maximum Load Current 1 ampere steady state, 10 amperes inrush
at 60°C
Voltage Drop 2.5 volts typical at 1 ampere
Protection
Transient Protected
Dielectric Breakdown Greater than 1500 volts RMS
Insulation Resistance 100 megohms min.
Mechanical
Mounting Surface mount with one #8 or #10 screw
Package Molded housing with encapsulated circuitry
Termination 0.25 in. (6.35 mm) male quick connect
terminals
Dimensions H 50.80 mm (2.0”); W 50.80 mm (2.0”);
D 30.70 mm (1.21”)
Environmental
Operating/Storage
Temperature -40°C to +80°C/-40°C to +85°C
Humidity 95% relative, non-condensing
Function Diagram
RANDOM START/LOCKOUT DELAY
V = Input Voltage
TH = Thermostat
CR = Compressor
Relay
TD = Time Delay
R = Reset
TH
CR
Littelfuse.com/hrv
12 TIME DELAY RELAYSFor dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 453
Time Delay Relays
Dedicated — Coin Vending
Littelfuse.com/tsa141300
HRV SERIES
Coin Counter
Wiring Diagram
Description
The HRV combines the accuracy of microcontroller based circuitry
with an electromechanical relay output. The HRV’s switching
capacity allows direct control of loads like compressors, pumps,
motors, heaters, and lighting. The HRV “S” version provides a
vend time after the selected number of initiate switch closures
to start is reached. The HRV “A” version includes all of the “S”
features and allows the total vend time to be extended for
each additional initiate switch closure. The HRV is ideal for cost
sensitive single coin or token vending machines. The electronic
circuitry is encapsulated to protect against humidity and vibration.
Operation
Coin Totalizer & Vending Timer (“S” Version):
Input voltage must be applied prior to & during operation.
When the total number of S1 initiate switch closures equals
the number to start set on the lower 3 DIP switches, the load
energizes and the vending time set on the upper 7 DIP switches
begins. At the end of the vending time, the load de-energizes
and the vending time is reset. Closing the initiate switch during
vend timing will have no affect on vend time delay.
Accumulating Vending Timer (“A” Version):
Input voltage must be applied prior to and during operation.
When the total number of S1 initiate switch closures equals
the number to start set on the lower 3 DIP switches, the load
energizes and the vending time starts. For every initiate switch
closure, the HRV unit adds one time per coin period, as set on
the upper 7 DIP switches, to the total vending time.
Operation Note: If S1 is closed when input voltage is applied, the output remains de-energized
and the S1 counter remains at zero closures. At least one “vend time” and one “closures to start”
DIP switch must be in the “ON” position for proper operation.
Reset: Removing input voltage resets the vend time delay, the
S1 closure counter, and de-energizes the output relay.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat accuracy + / - 0.1%,
Setting accuracy 0 - 2%, or 50ms
Encapsulated Protects against shock, vibration, and humidity
30A , 1Hp at 125VAC,
normally open contacts
Allows direct control of loads like compressors,
pumps, motors, and heaters without a contactor
Switch selectable
coin start
Allows user flexibility to select the number of coins
to start vending cycle
Coin switch can be
connected to a counter
Provides user with accurate count of total number of
coins collected
L1 N/L2
L1 N/L2
V = Voltage
S1 = Initiate Switch
L = Load
UTL = Optional Untimed Load
ISOLATED
OUTPUT
NON-ISOLATED
OUTPUT
Ordering Information
MODEL INPUT VOLTAGE VEND TIME MODE OF OPERATION OUTPUT FORM & RATING
HRV11SC 12VDC 1 - 127s Coin totalizer 30A SPDT, NO (isolated)
HRV24AC 24VAC 0.25 - 31.75m Accumulating 30A SPDT, NO (isolated)
HRV41AE 120VAC 1 - 127s Accumulating 30A SPDT, NO (isolated)
HRV41SE 120VAC 1 - 127s Coin totalizer 30A SPDT, NO (isolated)
HRV42SE 120VAC 5 - 635s Coin totalizer 30A SPDT, NO (isolated)
HRV43AE 120VAC 0.1 - 12.7m Accumulating 30A SPDT, NO (isolated)
HRV43AN 120VAC 0.1 - 12.7m Accumulating 30A SPDT, NO (non-isolated)
HRV43SE 120VAC 0.1 - 12.7m Coin totalizer 30A SPDT, NO (isolated)
If you don’t find the part you need, call us for a custom product 800-843-8848
12 TIME DELAY RELAYS
For dimensional drawing see: Appendix, page 512, Figure 17.
454 © 2022 Littelfuse, Inc.
Time Delay Relays
Dedicated — Coin Vending
HRV SERIES
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Switch Adjustment
Combine upper seven switches
in “ON” position for vend time
in minutes.
Combine lower three switches
in “ON” position for number of
closures to start.
Function Diagram
ACCUMULATING VENDING TIMER V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
L = Load
TD = Time Delay
R = Reset
NO, L
ACCUMULATING VENDING TIMER V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
L = Load
TD = Time Delay
R = Reset
NO, L
COIN TOTALIZER / VENDING TIMER
V = Voltage
S1 = Initiate Switch
L = Load
TD = Time Delay
L R = Reset
Specifications
Count Functions/
Switch Type Mechanical (counts on switch closure)
Minimum Switch
Closure Time ≥ 20ms
Minimum Switch Open
(between closures) Time ≥ 20ms
Count Range to Start 1 - 7 counts
Maximum Counts
(“A” Version) 250
Time Delay/Range *** Adjustable 1s - 31.75m in 4 ranges
Adjustment 7 of a 10 position DIP switch
Setting Accuracy 0% to +2% or 50ms, whichever is greater
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Reset Time ≤ 150ms
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
120 & 230 VAC -20% - 10%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 4VA; DC ≤ 2W
Output
Type Electromechanical relay
Form Isolated, SPDT or non-isolated, SPDT
Ratings SPDT-NO SPDT-NC
General Purpose
125/240VAC 30A 15A
Resistive
125/240VAC 30A 15A
28VDC 20A 10A
Motor Load
125VAC 1 hp* 1/4 hp**
240VAC 2 hp** 1 hp**
Life Mechanical - 1 x 106
;
Electrical - 1 x 105
, *3 x 104, ** 6,000
Protection
Surge IEEE C62.41-1991 Level A
Circuitry Encapsulated
Dielectric Breakdown ≥ 1500V RMS input to output on isolated units
Insulation Resistance ≥ 100 MΩ
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 76.7 mm (3”); W 50.8 mm (2”);
D 38.1 mm (1.5”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating/Storage
Temperature -40° to 70°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
***For CE approved applications, voltage must be removed when a switch position is changed.
Littelfuse.com/hrv
12 TIME DELAY RELAYS
© 2022 Littelfuse, Inc. 455 Littelfuse.com/relayscontrols
Flashers and Tower Lighting Controls
FLASHERS & TOWER LIGHTING
CONTROLS
Flashers for incandescent or LED lighting used with both alternating
and non-alternating applications in the signaling, communications, and
advertising industries. FAA approved versions for obstruction lighting
control are available. Tower lighting illuminates communications towers,
tall buildings, and bridges as required by FA regulation. Designs are also
available for powered AM and FM towers.
Flashers
FSU1000 Series ............................................................................ 456
FS100 Series Low Current Flasher ........................................... 458
FS100 Series Med Power Flasher ............................................ 460
FS200 Series ............................................................................ 462
FS300 Series ............................................................................ 464
FS491 ............................................................................ 466
FS500 Series ............................................................................ 467
SC3 / SC4 Series Sequencing Controls........................................... 469
Tower and Obstruction Lighting Controls
FA / FS Series ............................................................................ 471
FB Series Flasher & Incandescent Beacon Alarm Relay.... 472
SCR490D Obstruction Lamp Alarm Relay........................... 474
SCR Series Universal Lamp Alarm Relay.............................. 475
FB9L Universal Lamp Alarm Relay.............................. 477
SCR9L Universal Lamp Alarm Relay.............................. 479
PCR Series Photo Control...................................................... 481
FLASHERS & TOWER LIGHTING CONTROLS
13
456 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Flashers
Littelfuse.com/fsu1000
Wiring Diagram
FSU1000 SERIES
Description
The FSU1000 incorporates an onboard adjustable flash rate
of 10 to 100 FPM and a universal input voltage in one device.
Its circuitry is encapsulated and is capable of controlling loads
of up to 20A. The versatility of the FSU1000 makes it ideal for
applications where various flash rates and operating voltages
are required.
Operation
When input voltage is applied to terminal 2 and the load (lamp),
the load energizes steadily. When input voltage is applied to
terminal 3, the output flashes.
Optional Low Current Switch (S1): This low current switch
could be a limit switch or contact. While open, the operator sees
the load (lamp) ON and operating. When the limit switch closes,
the load (lamp) flashes to attract attention.
Features & Benefits
FEATURES BENEFITS
Universal input voltage
24 to 240VAC
Allows flexibility for a wide range of applications
with one part
Onboard adjustable
flash rate
Provides flexibility for user to select flash rate
between 10 - 100 FPM
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
High output rating up
to 20A, 200A inrush
Allows direct operation of high current loads
without a contactor
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
Ordering Information
MODEL INRUSH RATING LOAD RATING
FSU1000 10A 1A
FSU1003 60A 6A
FSU1004 100A 10A
FSU1005 200A 20A
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
V = Voltage
S1 = Optional low
current switch
L = Load
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 512, Figure 19.
© 2022 Littelfuse, Inc. 457
Flashers and Tower Lighting Controls
Flashers
FSU1000 SERIES
FLASHER (NC)
Specifications Flasher Function Diagram
Technical Data
Operation ON/OFF recycling solid-state flasher
(continuous duty)
Flash Rate Adjustable 10 - 100 FPM
ON/OFF Ratio ≅ 50%
Input
Range/Frequency 24 to 240VAC / 50/60Hz
Output
Load Type Inductive, resistive, or incandescent
Maximum Load Rating 1, 6, 10, or 20A steady state
Inrush 10 times steady state current
Mechanical
Mounting* Surface mount with one #10 (M5 x 0.8) screw
Dimensions
FSU1000 H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
FSU1003, FSU1004 H 50.8 mm (2”); W 50.8 mm (2”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Protection
Circuitry Encapsulated
Environmental
Operating/Storage
Temperature -20° to 60°C (240VAC +50°C) / -40° to 85°C
Weight 1A units: ≅ 2.4 oz (68 g)
≥ 6A units: ≅ 3.9 oz (111 g)
*Units rated > 6A must be bolted to a metal surface using the included heat sink compound.
The maximum mounting surface temperature is 90°C.
V = Voltage
S1 = Initiate Switch
L = Load
R = Reset
T1 = ON Time
T2 = OFF Time
T1 ≅ T2
Littelfuse.com/fsu1000
FLASHERS & TOWER LIGHTING CONTROLS
13
458 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Flashers
Littelfuse.com/fs100Lowcurrent
Wiring Diagram
FS100 SERIES
Description
The FS100 Series (low current) may be used to control inductive,
incandescent or resistive loads. This series offers a 1A (fullwave)
or a 2A (halfwave) steady state, 10A inrush solid-state output
and may be ordered with an input voltage of 24 or 120VAC. The
FS100 Series offers a factory fixed flash rate of 75 FPM or may
be ordered with a fixed, custom flash rate ranging from 45 to
150 FPM. Ideal for OEM applications where cost is a factor.
Operation
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of T1, T2 begins and the load de-energizes.
This cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to T2.
Features & Benefits
FEATURES BENEFITS
Compact Size:
38 x 23.9mm (1.5” x 0.94”) Ideal for OEM applications
Custom Flash
Rates Available
Tailor to specific application: custom rates range
from 45 to 150 FPM
Accessories
P1023-2 “P” Clamp
Mounting Bracket Alum. 15/16
Low Current Flasher
Ordering Information
MODEL INPUT VAC OUTPUT RATING A OUTPUT TYPE AC LOAD TYPE FLASH RATE
FS126 120 1 Fullwave Incandescent & Resistive 75 FPM
FS126-45 120 1 Fullwave Incandescent & Resistive 45 FPM
FS126-60 120 1 Fullwave Incandescent & Resistive 60 FPM
FS126RC 120 1 Fullwave Incandescent, Resistive, & Inductive 75 FPM
FS126RC-45 120 1 Fullwave Incandescent, Resistive, & Inductive 45 FPM
FS127 120 2 Halfwave Incandescent & Resistive 75 FPM
FS146 24 1 Fullwave Incandescent & Resistive 75 FPM
FS146RC 24 1 Fullwave Incandescent, Resistive, & Inductive 75 FPM
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N
V = Voltage
L = Load
R = Red Wire
B = Black Wire
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 512, Figure 25.
© 2022 Littelfuse, Inc. 459
Flashers and Tower Lighting Controls
Flashers
FS100 SERIES
Flasher Function Diagram
FLASHER (OFF FIRST) V = Voltage
R = Reset
L = Load
T1 = ON Time
T2 = OFF Time
T1 ≅ T2
Specifications
Technical Data
Operation OFF/ON solid-state flasher (continuous duty)
Flash Rate Factory fixed at 75 FPM ±20%
Custom Flash Rates Available From 45-150 FPM ±20%
ON/OFF Ratio ≅ 50%
Input
Voltage 24, 120VAC, ±15%
AC Line Frequency 50/60Hz
Output
Output Fullwave AC or Halfwave rectified AC
Load Type Incandescent, resistive, or inductive
(Choose RC suffix for inductive loads)
Maximum Load Rating Fullwave: 1A steady state
Halfwave: 2A steady state
Inrush 10A
Mechanical
Mounting Removable mounting bracket, use one #8
(M4 x 0.7) screw
Connection/Wires 18 AWG (0.82mm2) wires 6 in. (15.2cm)
Dimensions H 38.1 mm (1.5”); W 23.9 mm (0.94”)
Protection
Circuitry Encapsulated
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 1.1 oz (31 g)
Low Current Flasher
Littelfuse.com/fs100Lowcurrent
FLASHERS & TOWER LIGHTING CONTROLS
13
460 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Flashers
Littelfuse.com/fs100med
Wiring Diagram
V = Voltage
L = Load
FS100 SERIES
Description
The FS100 Series (medium power) may be used to control
inductive, incandescent, or resistive loads. Input voltages of 24,
120, or 230VAC are available. Fixed flash rates in stock range
from 30, 50, 60, and 90 FPM, with custom flash rates ranging
from 10 to 300 FPM. Encapsulation provides protection against
shock, vibration, and humidity. This group of solid-state flashers
has proven reliability with years of use throughout the world.
Operation
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of T1, T2 begins and the load de-energizes.
This cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to T2.
Features & Benefits
FEATURES BENEFITS
3A steady, 30A
inrush current
Provides direct control of inductive, incandescent, or
resistive loads
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
L1 N/L2
Medium Power Flasher
Ordering Information
MODEL INPUT FLASH RATE
FS143 24VAC 90 FPM
FS152 120VAC 90 FPM
FS152-30 120VAC 30 FPM
FS152-60 120VAC 60 FPM
FS162 230VAC 90 FPM
FS162-30 230VAC 30 FPM
If you don’t find the part you need, call us for a custom product 800-843-8848
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 461
Flashers and Tower Lighting Controls
Flashers
FS100 SERIES
FLASHER (OFF FIRST) V = Voltage
R = Reset
L = Load
T1 = ON Time
T2 = OFF Time
T1 ≅ T2
Specifications Flasher Function Diagram
Technical Data
Operation OFF/ON solid-state flasher (continuous duty)
Flash Rate Fixed at 90 FPM ±10%
Custom Flash Rates 10 - 300 FPM ±10%
ON/OFF Ratio ≅ 50%
Input
Voltage/Frequency 24, 120, or 230VAC ±15% / 50/60 Hz
Output
Load Type Inductive, resistive, or incandescent
Output Fullwave AC, solid state, SPST
Maximum Load Rating 3A steady state
Inrush 10 times steady state current
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6 .35 mm) male quick connect
terminals
Protection
Circuitry Encapsulated
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Weight ≅ 2.2 oz (62 g)
Medium Power Flasher
Littelfuse.com/fs100med
FLASHERS & TOWER LIGHTING CONTROLS
13
462 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Flashers
Littelfuse.com/fs200
Wiring Diagram
FS200 SERIES
Description
The FS200 Series may be used to control inductive,
incandescent, or resistive loads. Factory fixed flash rate of 45
or 90 FPM or may be ordered with a fixed custom flash rate
ranging from 10 to 180 FPM. Encapsulation provides protection
against shock, vibration, and humidity. Uniform performance,
high inrush current capability, and low RFI, make this series ideal
for general industrial applications.
Operation
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of T1, T2 begins and the load de-energizes.
This cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to T2.
Features & Benefits
FEATURES BENEFITS
3A steady, 30A inrush,
SPST output contact
Provides direct control of inductive, incandescent, or
resistive loads
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
High inrush current
capability and low RFI Ideal for general industrial applications
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Ordering Information
MODEL INPUT RATING FLASH RATE
FS219-45 12VDC ± 20% 3A 45 FPM
FS224 24VDC ± 20% 3A 90 FPM
If you don’t find the part you need, call us for a custom product 800-843-8848
V = Voltage
L = Load
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 463
Flashers and Tower Lighting Controls
Flashers
FS200 SERIES
FLASHER (OFF FIRST) V = Voltage
R = Reset
L = Load
T1 = ON Time
T2 = OFF Time
T1 ≅ T2
Specifications Flasher Function Diagram
Technical Data
Operation OFF/ON solid-state flasher (continuous duty)
Flash Rate Fixed at 90 FPM ±10%
Custom Flash Rate 10 - 180 FPM
ON/OFF Ratio ≅ 50%
Input
Voltage 12, 24, 36, 48, or 110VDC
Output
Load Type Inductive, resistive, or incandescent
Maximum Load Rating 0.25 - 3A steady state
OFF State Leakage Current
12 & 24VDC ≤ 250 µA
Inrush 10 times steady state current
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Protection
Circuitry Encapsulated
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Weight ≅ 2.2 oz (62 g)
Littelfuse.com/fs200
FLASHERS & TOWER LIGHTING CONTROLS
13
464 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Flashers
Littelfuse.com/fs300
Wiring Diagram
FS300 SERIES
Description
The FS300 Series of solid-state flashers were specifically
designed to operate lamp loads. Their two-terminal series
connection feature makes installation easy. The high immunity
to line noise and transients makes the FS300 Series ideal for
moving vehicle applications. All solid-state construction means
reliability and long life. The FS300 Series offers a factory fixed
flash rate of 75 FPM or may be ordered with a fixed, custom
flash rate ranging from 60 to 150 FPM.
Operation
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of T1, T2 begins and the load de-energizes.
This cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to T2.
Features & Benefits
FEATURES BENEFITS
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
High immunity to line
noise and transients
Designed specifically for moving
vehicle applications
High surge
current capability
(10 times steady state)
Direct operation of incandescent lamp loads
Two terminal
series connection
Provides quick and easy installation for new or
existing applications
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Ordering Information
MODEL INPUT MAXIMUM
CURRENT LOAD
FS312 12VDC ± 20% 2.5A
FS324 24VDC ± 20% 1.5A
If you don’t find the part you need, call us for a custom product 800-843-8848
V = Voltage
L = Load
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 512, Figure 16.
© 2022 Littelfuse, Inc. 465
Flashers and Tower Lighting Controls
Flashers
FS300 SERIES
FLASHER (OFF FIRST) V = Voltage
R = Reset
L = Load
T1 = ON Time
T2 = OFF Time
T1 ≅ T2
Specifications Flasher Function Diagram
Technical Data
Operation OFF/ON recycling solid-state flasher
(continuous duty)
Flash Rate Fixed at 75 FPM ±10%
Custom Flash Rates 60 - 150 FPM
ON/OFF Ratio ≅ 50%
Input
Voltage 12, 24, 36, 48, 72, & 110VDC
Output
Load Type Incandescent or resistive
Maximum Load Rating 0.25 - 2.5A steady state
Inrush 10 times steady state current
Mechanical
Mounting Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Protection
Circuitry Encapsulated
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.2 oz (62 g)
Littelfuse.com/fs300
FLASHERS & TOWER LIGHTING CONTROLS
13
466 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Flashers
Littelfuse.com/fs491
FS491
Description
The FS491 is a low leakage AC flasher designed to control
LED, or resistive loads. This product offers a solid-state output
and accepts an input voltage of 120VAC to 240VAC. It offers
a factory fixed flash rate of 75 FPM. The FS491 is the perfect
solution for LED lamp flashing.
Operation
Upon application of input voltage, the output energizes and
the ON time begins. At the end of the ON time, the output
de-energizes and the OFF time begins. At the end of the OFF
time, the output energizes and the cycle repeats as long as
input voltage is applied.
Reset: Removing input voltage resets the output and the
flash sequence.
Features & Benefits
FEATURES BENEFITS
Totally solid state No moving parts to arc and wear out, up to 100
million operations under typical conditions
Fully encapsulated Protects circuitry from shock, vibration and humidity
Extremely low
leakage current Ideal for use in LED lighting applications
Specifications
Technical Data
Operation ON/OFF solid-state flasher (continuous duty)
Flash Rate Fixed at 75 FPM ±20%
ON/OFF Ratio ≅ 50%
Input
Voltage 120 - 240VAC
Tolerance ± 15%
AC Line Frequency 50/60Hz
Output
Load Type LED or resistive
Output Bridge Rectifier & FET
Maximum Load Rating
120VAC to 240VAC 0.5A steady state; 5A inrush
Max. Load Leakage Current 250µA
Voltage Drop 2V typical
Mechanical
Mounting Surface mount with one #8 (M4 x 0.7) screw
Dimensions Dia. 23.9 mm (0.94”); L 38.1 mm (1.5”)
Protection
Surge IEEE C62.41 - 1991 Level A
Circuitry Encapsulated
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 1.1 oz (31 g)
L1 N/L2
V = Voltage
L = Load
R = Red Wire
B = Black Wire
W = White Wire
Wiring Diagram
Function Diagram
FLASHER (ON FIRST)
ON time plus OFF time equals one
complete flash.
V = Voltage
R = Reset
L = Load
T1 = ON Time
T2 = OFF Time
T1 ≅ T2
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 512, Figure 25.
© 2022 Littelfuse, Inc. 467
Flashers and Tower Lighting Controls
Flashers
Wiring Diagram
FS500 SERIES
Description
The FS500 Series flash rate is adjustable from 10 to 100 FPM.
A locknut is provided to hold selected flash rate. The long-life
electronic circuit combined with a quality electromechanical
relay provides flexibility and reliability in most applications.
Operation
Upon application of input voltage, the output relay is energized
and the ON time begins. At the end of the ON time, the output
relay de-energizes and the OFF time begins. At the end of the
OFF time, the output is energized and the cycle repeats as long
as input voltage is applied.
Reset: Removing input voltage resets the output and
the sequence.
Features & Benefits
FEATURES BENEFITS
Solid-state circuitry with
electromechanical relay Long life circuitry at a reliable low cost
Industry standard octal
plug connection Eliminates need for special connectors
Adjustable flash rate Provides flexibility for user to select flash rate
between 10 - 100 FPM
10A, DPDT isolated
output contacts Allows control of loads for AC or DC voltages
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 screws or snaps onto a
35 mm DIN rail. Uses PSC8 hold-down clips.
PSC8 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use with
NDS-8 Octal Socket. Sold in pairs.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
L1 N/L2
V = Voltage
Ordering Information
MODEL INPUT VOLTAGE
FS512 12VDC
FS524 24VAC/DC
FS590 120VAC/DC
If you don’t find the part you need, call us for a custom product 800-843-8848
*(some models)
*
8-PIN
Littelfuse.com/fs500
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 512, Figure 24.
468 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Flashers
Littelfuse.com/fs500
FS500 SERIES
FLASHER (ON FIRST-DPDT) V = Voltage
R = Reset
T1 = ON Time
T2 = OFF Time
NO = Normally Open
NC = Normally Closed
Specifications Flasher Function Diagram
Technical Data
Operation ON/OFF recycling flasher with adjustable
flash rate
Flash Rate Adjustable from 10 - 100 operations per
minute (guaranteed range)
ON/OFF Ratio ≅ 50%
Input
Input Voltage 12VDC, 24VAC/DC, 120VAC/DC, 230VAC
Tolerance
12VDC & 24VDC/AC -15% - 20%
120VAC/VDC & 230VAC -20% - 10%
AC Line Frequency 50/60Hz
Output
Load Type Electromechanical relay
Form DPDT
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/ 240VAC
Mechanical
Mounting Plug-in socket
Dimensions H 91.6 mm (3.62”); W 60.7 mm (2.39”);
D 45.2 mm (1.78”)
Termination Octal 8-pin plug-in
Protection
Isolation Voltage ≥ 1500V RMS input to output
Polarity DC units are reverse polarity protected
Environmental
Operating/Storage
Temperature -20° to 60°C / -30° to 85°C
Weight ≅ 5.8 oz (164 g)
FLASHERS & TOWER LIGHTING CONTROLS
13
© 2022 Littelfuse, Inc. 469
Flashers and Tower Lighting Controls
Sequencing Controls
Wiring Diagram
SC3 / SC4 SERIES
Chaser
Description
The SC3/SC4 Series are solid-state 3 or 4 channel chasers
designed for sequential three circuit flashing of incandescent
lamp loads. Unlike electromechanical chasers, there are no
contacts to arc, wear, and eventually fail.
Operation
Sequential 3 or 4 circuit flashing of incandescent loads with
equal time delays for each load. Upon application of input
voltage, Load 1 is energized. At the end of the time delay, Load 1
de-energizes and Load 2 energizes. At the end of the time delay,
Load 2 de-energizes and Load 3 energizes. This cycle continues
until input voltage is removed. The set time delay (rate) is the
timing for the whole cycle, for all 3 loads (output contacts).
Reset: Removing input voltage resets the unit and cycle.
Features & Benefits
FEATURES BENEFITS
Totally solid state
and encapsulated
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
1A steady solid
state output Provides 100 million operations in typical conditions.
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
L1 N/L2
SC4 shown. For SC3, terminal 6 and
load L4 are eliminated.
V = Voltage
L1 = Load 1
L2 = Load 2
L3 = Load 3
L4 = Load 4
Ordering Information
MODEL INPUT VOLTAGE RATING CHANNEL FLASH RATE
SC3120A 120VAC 1A 3 Sequential Adjustable
30 - 30FPM
SC4120A 120VAC 1A 4 Sequential Adjustable
30 - 30FPM
If you don’t find the part you need, call us for a custom product 800-843-8848
Littelfuse.com/sc3-sc4
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 513, Figure 28.
470 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Sequencing Controls
Littelfuse.com/sc3-sc4
SC3 / SC4 SERIES
Specifications
Technical Data
Operation Sequential 3 circuit flashing of
incandescent lamp loads. Fixed rate.
For sequential 4 circuit and adjustable rates,
please contact the factory.
Rate Fixed: 30 operations per minute (±10%)
Input
Voltage 120VAC ±15%
AC Line Frequency 50/60 Hz
Output
Type Solid state
Rating 1A steady state per output
Mechanical
Mounting Surface mount with two #6 (M3.5 x 0.6) screws
Termination 0.25 in. (6.35 mm) male quick connect terminals
Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);
D 31 mm (1.22”)
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Environmental
Operating/Storage
Temperature -20° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 5.4 oz (153 g)
Flasher Function Diagram
FLASHER (CHASING)
SC4 shown.
For SC3, L4 is eliminated and L1 TD
begins as soon as L3 TD is completed.
4
V = Voltage
R = Reset
L1, L2, L3, L4 = Lamps
TD = Time Delay
(all are equal)
FLASHERS & TOWER LIGHTING CONTROLS
13
© 2022 Littelfuse, Inc. 471
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Wiring Diagram
FA / FS SERIES
Description
The FA/FS Series have proven their reliability through years of
use on communication towers, smoke stacks, cooling towers,
tall buildings, bridges and utility towers. The highest quality
components are encapsulated in a rugged plastic housing with
a molded-in heat transfer plate. The flash rate, ratio, and failsafe design meet FAA regulations. Zero voltage switching can
increase lamp life up to ten times. The FS155-30RF includes
superior RF filtering circuitry for use in high RF installations,
including AM hot towers.
Operation
FS Series - Flasher (OFF First)
FA Series - Auxiliary Modules
Upon application of input voltage, the T2 OFF time begins. At
the end of the OFF time, the T1 ON time begins and the load
energizes. At the end of T1, T2 begins and the load de-energizes.
This cycle repeats until voltage is removed.
Reset: Removing input voltage resets the output and the
sequence to T2.
Features & Benefits
FEATURES BENEFITS
Zero voltage switching Delivers up to 10 times longer lamp life
Encapsulated Protects against shock, vibration, and humidity
Metalized
mounting surface Facilitates heat transfer in high current applications
Superior RF filtering
circuitry (RF models only)
Ideal for AM hot towers and other high
RF installations
High inrush capability
up to 200A
Will withstand the repetitive inrush current of
incandescent beacons
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
L1
N/L2 L1 L1 N/L2
N/L2 (H) L1 L2
(H)
FS Series
FA155
FA165
FA155-2
FA165-2
FA155-2
V = Voltage N = Neutral B = Beacon
DL = Dummy Load for Constant Line Loading
Rd = 3.3 KΩ @ 5W for 120VAC; 8.5 KΩ @ 5W for 230VAC
F = Flasher (FS155-30T, FS155-30RF, FS165-30T)
AX = Auxiliary Unit (FA155, FA155-2, FA165, FA156-2)
*(FS155 & FA155 models only)
*
Ordering Information
MODEL INPUT VOLTAGE WATTAGE INRUSH RATING DESCRIPTION
FA155 120VAC 2500W 200A Auxiliary unit to provide constant line loading
FA155-2 120VAC 2500W 200A Auxiliary unit for synchronized operating of additional beacons. Synchronized flashing of
additional beacons on a 3 wire system
FA165 230VAC 5000W 200A Auxiliary unit to provide constant line loading
FA165-2 230VAC 5000W 200A Auxiliary unit for synchronized operating of additional beacons. Synchronized flashing of
additional beacons on a 2 wire system
FS155-30RF 120VAC 2500W 200A For high RF interference locations including AM hot towers
FS155-30T 120VAC 2500W 200A Standard beacon flasher
FS165-30T 230VAC 5000W 200A Standard beacon flasher
If you don’t find the part you need, call us for a custom product 800-843-8848
FA155
FS165-30T
Littelfuse.com/fa-fs
FLASHERS & TOWER LIGHTING CONTROLS
For dimensional drawing see: Appendix, page 512, Figure 19. 13
472 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Littelfuse.com/fa-fs
FA / FS SERIES
Flasher Function Diagrams
FLASHERS & AUX.
MODULES
FLASHER (OFF FIRST)
Specifications
Operation Single & multiple beacon flashing with
auxiliary modules
Flash Rate (FS Series Only) 30 ±10 FPM
ON/OFF Ratio
(FS Series Only) 50 - 67% ON time; 33 - 50% OFF time
Voltage 120 or 230VAC ±20%
AC Line Frequency 50/60Hz
Output Rating (Zero
Voltage Switching) 2500W @ 120VAC; 5000W @ 230VAC
Inrush Current 200A peak for 1 cycle of AC line
Mounting* Surface mount with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2”); W 50.8 mm (2”);
D 38.4 mm (1.51”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Circuitry Encapsulated
Operating/Storage
Temperature -55° to 65°C / -55° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 3.9 oz (111 g)
* Note: Must be mounted to metal surface using the included heat sink compound. The maximum
mounting surface temperature is 90°C.
V = Voltage
R = Reset
L = Load
T1 = ON Time
T2 = OFF Time
T1 ≅ T2
F = Flasher
DL = Dummy
Load
AX = Auxillary
Module
FLASHERS & TOWER LIGHTING CONTROLS
13
© 2022 Littelfuse, Inc. 473
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Littelfuse.com/fb
Wiring Diagram
FB SERIES
Flasher & Incandescent Beacon Alarm Relay
Description
The FB Series is used to monitor the operation of one twolamp incandescent beacon and one beacon flasher (or auxiliary
module). The flasher and lamps are monitored by sensing the
flow of current in the circuit. If the lamp(s) or the flasher fail to
operate properly, a solid-state output and an isolated SPDT relay
energize. When connected to a site monitoring system, this
unit provides the remote beacon monitoring protection required
by the FAA/FCC. On a multiple beacon structure, one unit is
required for each two-lamp incandescent beacon (one unit per
beacon for LED beacons).
Operation
If one lamp in an incandescent beacon fails, the relay and solidstate lamp failure outputs energize after 10s. If the flasher fails
in the ON or OFF condition, the relay and the solid-state flasher
failure output energizes after 6s. If both failures occur, all three
outputs energize after their trip delays.
Note: If both incandescent lamps fail, all three outputs will
energize. The relay and solid-state flasher failure output
energizes after 6s, and the solid-state lamp failure output
energizes after 10s.
Features & Benefits
FEATURES BENEFITS
Toroidal current sensing
Reliable low cost monitoring of the flasher and
lamps through built-in CT and provides isolatio n
from the monitored circuit
Failsafe beacon
monitoring
Alarm monitors for failed incandescent lamps in
addition to flasher function
One isolated, 5A, SPDT
alarm output plus two,
1A, solid-state line
voltage alarm outputs
When connected to a site monitoring system, it
provides the remote beacon monitoring protection
required by the FAA / FCC.
Fixed trip delays for
flasher (6s) and lamp
(10s) failures
Prevents nuisance alarms
L1 N/L2 V = Voltage
B = Beacon
F = Flasher
T = Toroid
BRC = Flasher Bypass
Relay Contacts
AR = FB Alarm Relay
BR = Bypass Relay Coil
FL = Flasher Failure LED
LL = Lamp Failure LED
AXL = Lamp Alarm
Relay Coil
NOTE: Flasher module may be located
on either the line or load side of the
toroidal sensor.
Ordering Information
MODEL LINE VOTAGE LAMP TYPE
FB120A 120VAC Incandescent Beacon
FB230A 230VAC Incandescent Beacon
If you don’t find the part you need, call us for a custom product 800-843-8848
Specifications
Input Voltage
FB120A 120VAC ±15%
FB230A 230VAC ±15%
AC Line Frequency 50/60Hz
Lamp Socket Voltage ±10%; 50/60Hz
Alarm Outputs
Type 3 total - 1 relay, 2 solid state;
One isolated SPDT relay rated 5A resistive
Two solid-state line voltage outputs rated
0.5A steady, 5A inrush
Lamp Failure Detection
FB120A For two 620W or 700W lamps
FB230A For two 500W or 700W lamps
Trip Delays
Flasher Failure Fixed at 6s; -0/+40%
Lamp Failure Fixed at 10s; -0/+40%
LEDs
Lamp Failure (Red) Glows when one or both lamps fail
Flasher Failure (Red) Glows when the flasher fails
Protection
Circuitry Encapsulated
Mounting Surface mount with two #6 (M3.5 x 0.6) screws
Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);
D 44.5 mm (1.75”)
Termination 7 position barrier block for 20 AWG (0.5 mm2
)
to 14 AWG (2.5 mm2
) wire
Environmental
Operating/Storage
Temperature -55° to 60°C / -55° to 85°C
Weight ≅ 7 oz (198 g)
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 514, Figure 47.
474 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Littelfuse.com/scr490d
Wiring Diagram
SCR490D
Obstruction Lamp Alarm Relay
Description
The SCR490D is used to provide remote monitoring of steady
burning incandescent marker and obstruction lighting. Four
onboard switches allow operator programming for lighting
systems with two through nine lamps on a single AC circuit. The
SCR490D uses a toroidal sensor and electronic circuitry to sense
the failure of one or more lamps.
Operation
When a lamp fails, the SCR490D senses a decrease in current
flow. Then, after a fixed time delay, it transfers to its alarm mode.
In alarm mode, the LED indicator, the output relay (SPDT
isolated contacts), and a non-isolated solid-state output are
energized. Replacement of the failed lamps resets the alarm
outputs and the LED indicator. To prevent false alarm signals,
power must be applied to the SCR490D at the same time that
lamps are energized.
Features & Benefits
FEATURES BENEFITS
Toroidal current sensing
Reliable low cost monitoring of incandescent
marker and obstruction lighting through built-in
CT which also provides isolation from the
lighting circuit
Monitors 2 - 9 lamps Senses failed obstruction lamps on a single
AC circuit
Isolated, 10A, SPDT alarm
output plus one 1A,
solid-state line voltage
alarm output
Provide alarm indication and can also be used for
remote monitoring of the lighting system
Fixed trip delay (6s) Prevents nuisance alarms
Specifications
Operation
Number of Lamps 2 - 9 (selectable)
Lamp Wattage 116W, incandescent lamps
Rated Lamp Voltage 120 or 130VAC (selectable)
Monitored Voltage 120VAC ±3%
Trip Delay ≅ 6s fixed
Voltage 120VAC
AC Line Frequency 50/60Hz
Tolerance
120VAC - 20% - 10%
Line Voltage Output
(Solid State Rated) ≤ 125W to operate a spare lamp or alarm
Isolated Alarm Output 10A @ 120VAC or 30VDC resistive;
1/4 hp @ 125VAC; 1/2 hp @ 250VAC
Mounting Surface mount with two #6 (M3.5 x 0.6) screws
Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);
D 44.5 mm (1.75”)
Termination Screws with captive clamps for up to 14 AWG
(2.45 mm2
) wire
Circuitry Encapsulated
Operating/Storage
Temperature -55° to 65°C / -55° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 6.8 oz (193 g)
L1 N/L2
V = Voltage
OL = Obstruction Lamps
T = Toroid
SS = Selector Switch
AXL = Auxiliary
Load/Alarm
Relay contacts
are isolated.
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 514, Figure 47.
© 2022 Littelfuse, Inc. 475
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Wiring Diagram
SCR SERIES
Universal Lamp Alarm Relay
Description
The SCR series is a universal lamp alarm relay designed to
sense the failure of flashing or steady incandescent beacon
lamps or steady side lights. The toroidal current sensor provides
isolation and allows monitoring of more than one line at a time.
The SCR Series energizes when one or more lamps fail. It will
monitor the operation of one to four side lights and up to four
beacon lamps.
Operation
When a lamp fails, the SCR Series senses a decrease in current
flow. After a fixed time delay, the LED glows and the two alarm
outputs energize. The outputs and the LED are reset when
the failed lamps are replaced and the current returns to the
nominal setting, or when the input voltage is removed. The SCR
will sense an open flasher, it will not sense a continuously ON
flasher (see FB Series).
Features & Benefits
FEATURES BENEFITS
Toroidal current sensing Provides isolation from the lighting circuit and
allows monitoring of multiple lines simultaneously
Monitors 1-4 side
lights or up to 4
beacon lamps
Senses failed incandescent flashing beacon or
steady obstruction lamps
Isolated, 10A, SPDT alarm
output plus one 1A,
solid-state line voltage
alarm output
Provides alarm indication and can also be used for
remote monitoring of the lighting system
Fixed trip delay (6s) Prevents nuisance alarms
Switch selectable
number, voltage, and
wattage of lamps
User selectable to meet wide application needs
with one relay
(SCR430T only)
L1 N/L2
L1 N/L2
BEACON LAMP CONNECTION DIAGRAM
OBSTRUCTION LAMP CONNECTION DIAGRAM
V = Voltage
B = Beacon Lamps
SS = Selector Switch
T = Toroid
F = Flasher
AXL = Auxiliary
Load/Alarm
Relay contacts
are isolated.
V = Voltage
SS = Selector Switch
T = Toroid
AXL = Auxiliary
Load/Alarm
OL = Obstruction
Lamps
Relay contacts
are isolated.
Ordering Information
MODEL INPUT LAMP TYPE
SCR430T 120VAC Incandescent
SCR630T 230VAC Incandescent
If you don’t find the part you need, call us for a custom product 800-843-8848
Littelfuse.com/scr
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 514, Figure 47.
476 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Littelfuse.com/scr490d
SCR SERIES
Selection Range
SCR430T SCR630T
a. 620 W 700 W
b. 120 V
c. c.
a. 116 W
130 V
4L
3L
2L
1L
116 W
4L
3L
2L
1L
1.
2.
a. Lamp Wattage - Select the lamp wattage of the lamps in use.
b. Lamp Voltage - Select the lamp voltage shown on the lamp
(SCR430T)
c. Lamps ON - Select the number of lamps on during normal
operation. Only one lamp switch at a time may be transferred
to the right.
Programming Example
SCR430T SCR630T
a. 620 W 700 W
b. 120 V
c. c.
a. 116 W
130 V
4L
3L
2L
1L
116 W
4L
3L
2L
1L
1.
2.
Example Shown: SCR430T-620 watts at 120 VAC lamps, two lamps
are ON during normal operation.
STEP
1. Select lamp wattage: 116 or 620 watts
2. Select the number of lamps ON (1 thru 4) during normal
operation. Only one lamp switch may be ON (RIGHT) at any time.
Specifications
Operation
Lamp Monitoring
Capacity (in lamps) 100W 116W 620W 700W
SCR430T 120VAC Lamps 4 4 4 n/a
SCR630T 230VAC Lamps n/a 4 n/a 4
Time Delay
Trip Delay Factory fixed ≅ 6s
Input
Input Voltage/Tolerance SCR430T - 120VAC ±10%
SCR630T - 230VAC ±10%
AC Line Frequency 50/60Hz
Output To operate a spare lamp or alarm
Line Voltage Output
(Solid-state Rated) ≤ 125W @ 120VAC
≤ 250W @ 240VAC
Isolated Alarm Output (SPDT) 10A @ 240VAC or 30VDC resistive;
1/4 hp @ 125VAC; 1/2 hp @ 250VAC
Mechanical
Mounting Two #6 (M3.5 x 0.6) screws
Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);
D 44.5 mm (1.75”)
Termination Screws with captive clamps for up to 14 AWG
(2.45 mm2
) wire
Protection
Circuitry Encapsulated
Environmental
Operating Temperature -55° to 65°C
Weight ≅ 6.8 oz (193 g)
FLASHERS & TOWER LIGHTING CONTROLS
13
© 2022 Littelfuse, Inc. 477
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Wiring Diagram
FB9L
Universal Lamp Alarm Relay
Description
The FB9L is a universal lamp alarm relay designed to sense
the failure of flashing LED beacon lamps. It will monitor the
operation of one to eight beacons connected to a single flasher
and/or auxiliary modules and the operation of the flasher. The
FB9L output relay energizes when one or more lamps fail. All
monitored lamps must be the same wattage and voltage. The
0.5A solid-state output energizes when a flasher failure is sensed.
Operation
When a LED beacon lamp fails, the FB9L senses a decrease in
current flow. After a 10s lamp failure trip delay, the isolated SPDT
(4-5-6) and non-isolated SPNO (3-1) relay contacts energize.
These contacts are used to indicate a beacon failure has
occurred. The “L” onboard LED indicator flashes green during
the trip delay and glows red after the output relay energizes.
Connected to a site monitoring system, it provides remote
beacon monitoring required by FAA-AC No: 150/5345-43E.
The FB9L also monitors the operation of the flasher. If the flasher
remains in the ON or OFF condition for more than 6s the solidstate output energizes and the “F“ flasher failure, onboard LED
glows red. This output is normally used to energize an external
flasher bypass relay. The contacts of the bypass relay are used
to route voltage around the failed flasher and to indicate an
alarm condition.
Note: In a single flasher, single beacon system, if the beacon
lamp fails, zero current flow is detected. This will cause the
flasher failure output to energize after 6s and then the beacon
failure outputs after 10s. This is normal operation and can be
expected anytime zero current is flowing through the
monitored conductor.
Features & Benefits
FEATURES BENEFITS
Self calibrating Saves time at installation. No fine
adjustment required.
Failsafe beacon
monitoring
Alarm monitors for failed LED lamps in addition to
flasher function
Number of beacons
monitored is switch
selectable for up to 8
User selection allows quick set up and easy
adaption to multiple applications
Universal voltage
120 to 230VAC Meets wide application requirements
Isolated, 10A, SPDT
alarm output contacts
Provides remote beacon monitoring when
connected to a site monitoring system, which is
required by the FAA
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
L1 N/L2
V = Voltage
B = Beacon
F = Flasher
BRC = Flasher Bypass Relay Contacts
T = Toroid
AR = FB Alarm Relay
BR = Bypass Relay Coil
FL = Flasher Failure LED
LL = Lamp Failure LED
AXL = Lamp Alarm Relay Coil
NOTE: Flasher module may be located on either the line or load side of the toroidal sensor.
Littelfuse.com/fb9L
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 513, Figure 31.
478 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Littelfuse.com/fb9L
FB9L
Specifications
Sensors
Calibration Range
(total all Lamps) 150mA - 8.0A
Absolute Max Current
(total all Lamps) 15A max. (may not calibrate above 8A)
Single Lamp Current 150mA - 8.0A (total all lamps ≤ 8.0A)
Trip Delay
Flasher Failure Fixed at 6s; -0/+40%
Lamp Failure Fixed at 10s; -0/+40%
Input
Input Voltage/Tolerance 120 to 230VAC / ±15%
AC Line Frequency 50/60Hz
Output To operate a spare lamp or alarm
Line Voltage Output (SPNO) 5A @ 240VAC or 30VDC resistive;
1/4 hp @ 125VAC; 1/2 hp @ 250VAC
Isolated Alarm Output (SPDT) 10A @ 240VAC or 30VDC resistive;
1/4 hp @ 125VAC; 1/2 hp @ 250VAC
Solid-State Line
Voltage Output (F) 0.5A steady; 5A inrush
Mechanical
Mounting One #10 (M5 x 0.8) screw
Dimensions H 76.7 mm (3”); W 50.8 mm (2”);
D 41.7 mm (1.64”)
Termination IP20 screw terminals for up to 14 AWG
(2.45 mm2
) wire or two 16 AWG (1.3 mm2
) wires
LEDs
Power/Timing/Lamp Failure
(Bi-color) Glows red when one or more lamps fail
Flasher Failure (Red) Glows red when the flasher fails
Protection
Circuitry Encapsulated
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Weight ≅ 3.9 oz (111 g)
FAA-AC No. 150/5345-43E
Indicator Table
L Green Input ON & Calibrated
L Green Flashing Trip Delay
L Red Lamp Failure
L Red/Green Flashing Calibrating
L Red Flashing Not Calibrated
F Red Flasher Failure
FLASHERS & TOWER LIGHTING CONTROLS
13
© 2022 Littelfuse, Inc. 479
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Wiring Diagram
SCR9L
Universal Lamp Alarm Relay
Description
The SCR9L is a universal lamp alarm relay designed to sense the
failure of flashing or steady LED beacon lamps or obstruction
lamps. The SCR9L energizes when one or more lamps fail. It
will monitor the operation of one to eight beacon or obstruction
lamps. All monitored lamps must be the same wattage and
voltage. When connected to a site monitoring system, it
provides the remote lamp monitoring protection required by the
FAA-AC No: 150/5345-43E.
Operation
When a lamp fails, the SCR9L senses a decrease in current flow.
After a 10s trip delay, the onboard LED glows and the two alarm
outputs energize. The outputs and the LED are reset when the
failed lamps are replaced and the unit is recalibrated. The SCR9L
will sense an open flasher, it will not sense a continuously ON
flasher (see FB Series). Removing input voltage de-energizes the
output and the LED‘s. It does not change the calibration.
Features & Benefits
FEATURES BENEFITS
Self calibrating Designed for use with all types of LED beacon and
obstruction lamps
Failsafe beacon
monitoring
Relay will also provide an alarm signal on a failed
flasher (open)
Number of lamps
monitored is switch
selectable up to 8
User selection allows quick set up and easy
adaption to multiple applications
Universal voltage
120 to 230VAC Designed for use in most applications
Isolated, 10A, SPDT
alarm output contacts
Provides remote beacon monitoring when
connected to a site monitoring system, as is
required by the FAA
LED indication Provides visual relay status of operation, alarm, trip
delay, and calibration
Fully encapsulated Protects against shock, vibration, and humidity
Accessories
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
L1 N/L2
L1 N/L2
BEACON LAMP CONNECTION DIAGRAM
OBSTRUCTION LAMP
CONNECTION DIAGRAM
V = Voltage
B = Beacon Lamps
SS = Selector Switch
L = LED Indicator
F = Flasher
AXL = Auxiliary
Load/Alarm
OL = Obstruction Lamps
SI = Sensor Input
H = “3“ Spare AC Hot
Connection (2A max.)
Littelfuse.com/scr9L
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 513, Figure 31.
480 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
www.littelfuse.com/scr9L
SCR9L
Calibration
Alarm relays must be calibrated at initial installation and when
LED lamps are replaced. Due to LED lamp aging, recalibration is
recommended every 12 months.
1. Remove input voltage
2. Move calibration switch to off position
3. Re-apply input voltage
4. LED will flash red to indicate the unit is ready for calibration
5. Visually inspect structure’s lighting to make sure all lamps
and flashers (if used) are operating properly
6. Remove input voltage
7. Adjust lamp selector switches for the correct number of
lamps to be monitored (see adjustment diagram below)
8. Re-apply input voltage
9. LED should flash red
10. Move calibrate switch to ON position
11. The LED will alternate flashing red and green
12. LED will glow steady green within 30 secs.
Calibration is complete
Calibration Failed
If the LED double blinks red, calibration failed. Remove input
voltage and repeat steps 6-8.
Notes:
a. Monitoring a mixture of LED beacons and LED obstruction
lamps is not possible with the SCR9L.
b. This alarm relay is not designed to monitor
incandescent lamps.
c. Applying input voltage when the calibrate switch is in the
OFF position, erases the previous calibration settings. The
LED will flash Red. The output relays are OFF and the unit
will not sense lamp failures.
d. Only one temperature compensated LED beacon can
be monitored with this product. A combination of
temperature compensated and standard LED beacons
cannot be monitored.
Adjustment Example
OFF ON
SCR9L
7.
Example Shown: SCR9L two lamps are ON during
normal operation.
Indicator Table
L Green Input ON & Calibrated
L Green Flashing Trip Delay
L Red Lamp Failure
L Red/Green Flashing Calibrating
L Red Flashing Not Calibrated
Specifications
Sensors
Calibration Range
(total all Lamps) 150mA - 8.0A
Absolute Max Current
(total all Lamps) 15A max. (may not calibrate above 8A)
Single Lamp Current 150mA - 8.0A (total all lamps < 8.0A)
Time Delay
Trip Delay Factory fixed ≅10s
Input
Input Voltage/Tolerance 120 to 230VAC ±15%
AC Line Frequency 50/60Hz
Output To operate a spare lamp or alarm
Line Voltage Output (SPNO) 5A @ 240VAC or 30VDC resistive;
1/4 hp @ 125VAC; 1/2 hp @ 250VAC
Isolated Alarm Output (SPDT) 10A @ 240VAC or 30VDC resistive;
1/4 hp @ 125VAC; 1/2 hp @ 250VAC
Auxilliary Input Voltage (H) ≤ 2A @ 230VAC
Mechanical
Mounting One #10 (M5 x 0.8) screw
Dimensions H 76.7 mm (3”); W 51.3 mm (2.02”);
D 41.7 mm (1.64”)
Termination IP20 screw terminals for up to 14 AWG
(2.45 mm2
) wire or two 16 AWG
(1.3 mm2
) wires
Protection
Circuitry Encapsulated
Environmental
Operating / Storage
Temperature -40° to 60°C / - 40° to 85°C
Weight ≅ 3.9 oz (111 g)
FLASHERS & TOWER LIGHTING CONTROLS
13
© 2022 Littelfuse, Inc. 481
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Wiring Diagram
PCR SERIES
Photo Control
Description
The PCR Series of photo controls is a combination of precision
electronic circuitry, electromechanical output, and unique
molded plastic housing. Designed and built to meet the
demands of the most rigorous requirement of tower and
obstruction lighting control, each unit is factory calibrated to
meet FAA and FCC specifications. Electronic circuit, output
contactor, and terminal block are all contained within front
plastic housing. Edge support molded into the bottom edge of
housing allows easy wiring of new and existing installations.
Available with or without cast aluminum junction box.
Operation
When the amount of light sensed falls below the actuation level
for energization, the output relay energizes. Conversely, when
the amount rises above the actuation level for de-energization,
the output relay de-energizes.
Features & Benefits
FEATURES BENEFITS
ABS plastic housing with
gasket seal
Withstands outdoor environmental hazards and
protects circuitry from moisture damage
Two 20A relay contacts Allows direct control of a lighting circuit without a
separate contactor
Fixed time delay Eliminates contact chatter
Reliable photo sensor Provides automatic lighting circuit operation from
dusk to dawn
Ordering Information
MODEL INPUT DESCRIPTION
REPLACES
Hughey
& Phillips
Crouse
Hinds
PCR10 120VAC Photo Control without
aluminum box n/a n/a
PCR11 120VAC Photo Control without
aluminum box PC800 120V PEC52010
PCR12 230VAC Photo Control with
aluminum box n/a n/a
PCR13 230VAC Photo Control with
aluminum box PC800 240V PEC52010-1
If you don’t find the part you need, call us for a custom product 800-843-8848
Dashed lines are internal connections.
ons. Dashed lines are internal connections.
ions.
*Customer Supplied Jumper
Dashed lines are
internal connections.
Littelfuse.com/pcr
FLASHERS & TOWER LIGHTING CONTROLS
13
For dimensional drawing see: Appendix, page 514, Figure 45.
482 © 2022 Littelfuse, Inc.
Flashers and Tower Lighting Controls
Tower and Obstruction Lighting Controls
Littelfuse.com/pcr
PCR SERIES
Specifications
Indication LED indicates power is applied
Light Actuation Levels
(Factory Calibrated) Energized: ≤ 35 fc
De-energized: ≥ 60 fc
Voltage 120VAC or 230VAC
AC Line Frequency 50/60Hz
Tolerance
120 & 230VAC -20% - 10%
Output Rating Two SPST NO 20A contacts
1 hp @ 120VAC
2.5 hp @ 240VAC
Termination Screw terminals for up to #8 (M4 x 0.7)
AWG wire
Dimensions H 159.51 mm (6.28”); W 127 mm (5.0”);
D 131.75 mm (5.19”)
Mounting ABS plastic housing with gasket seal. Multiple
knockout holes for optional mounting to
Crouse Hinds or Hughey & Phillips cast
aluminum electrical boxes.
Operating/Storage
Temperature -40° to 60°C / -55° to 85°C
FLASHERS & TOWER LIGHTING CONTROLS
13
For More Information…
on Retrofits, Panel Mount Adapters
and more accessories, visit
Littelfuse.com/relayaccessories
© 2022 Littelfuse, Inc. 483 Littelfuse.com/relayaccessories
Accessories
ACCESSORIES
Software............................................................................................. 484
Electrical............................................................................................. 485
Ground Reference Modules, High-Tension Couplers,
& Relay Testers.................................................................................. 488
Remote Indication.............................................................................. 489
Communication Adapters & Modules................................................ 492
Terminations & Adapters................................................................... 493
Liquid Level Control............................................................................ 495
Current Transformers (CTs)
CT Selection Guide............................................................................. 495
Current Transformers......................................................................... 496
Instrumentation & Metering Transformers........................................ 497
Current Transformer Sizing Chart....................................................... 498
ELCT Series........................................................................................ 499
ZSCT Series........................................................................................ 501
Mounting Adapters and Enclosures
Panel-Mount Adapters....................................................................... 503
DIN Rail & Mounting Adapters.......................................................... 505
Brackets & Clips................................................................................. 506
Enclosures & Watertight Covers........................................................ 507
Sockets............................................................................................... 508
ACCESSORIES
14
Littelfuse.com/relayaccessories 484 © 2022 Littelfuse, Inc.
Accessories
Software
SOFTWARE
SOFTWARE
Product Features Accessory For
Solutions-M
Relay Interface
Software
Provides the ability to configure and monitor Modbus
networks. The features include data logging, real-time data
monitoring and fault and event monitoring. Devices can be
added and configured manually or the software can scan
an existing network to identify devices which can be used
as is or reconfigured by the user. Setpoints for each device
can be uploaded and downloaded for easy monitoring and
reconfiguration.
RS485
TCP/IP networks
MotorSaver and
PumpSaver Devices
SE-COMM-RIS
Relay Interface
Software
Provides remote access to metering, control, data logging, and
programming features. Setpoints can be accessed individually,
downloaded as a file, and protective curves can be plotted.
Metered data can be observed or logged for later study.
FPU-32 FPS
MPS MPU-32
SE-FLASH
Firmware
Update Utility
Used to update relay firmware to add new features.
FPU-32 FPS
MPS MPU-32
EL731
SE-MON330
Relay Interface Software
Used to receive data from the SE-330. It displays relay set
points and measured values, and features data logging of
information at a selectable interval.
SE-330 SE-330AU
SE-330HV
VMPU
Virtual Motor
Protection Relay
Allows the user to scroll through the MPU-32 Motor Protection
Relay menu. MPU-32
VMPS
Virtual Motor
Protection System
Allows the user to scroll through the MPS Motor Protection
System menu. MPS
VFPU
Virtual Feeder
Protection Relay
Allows the user to scroll through the FPU-32 Feeder Protection
Relay menu. FPU-32
MPU-32 Tutorial
MPU-32 Online
Self-Training Tutorial
Online Self-Training tutorial for MPU-32 programming. MPU-32
Protection Relays and Alarm Systems are supplied with
free software. The software simplifies programming and
allows the user to save setpoint files and reuse them for
similar applications.
The software gives the ability to change parameters and
see the impact on the protection time current curves. It
also allows another device curve to be entered to view
simple coordination.
ACCESSORIES
14
© 2022 Littelfuse, Inc. 485 Littelfuse.com/relayaccessories
Accessories
Electrical
ELECTRICAL
ELECTRICAL ACCESSORIES
Product Features Accessory For
PGA-1100.0010
Diode Logic Unit
Used in installations with more than one breaker
and more than one Littelfuse Arc-Flash Relay. It
separates the trip paths, so the breakers can be
tripped independently from each other.
Full datasheet and ordering information available at
Littelfuse.com/pga1100
PGR-8800 AF0500 AF0100
D0920 D1000
P1004-XX-(X)
Versa-Pot Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
The shaft is slotted for screwdriver adjustment and
serrated for slip-proof finger adjustment. Accepts
Versa-Knob or Lock Shaft. May be ordered with
two 8 in (20.3 cm) wires soldered to pot
(clockwise increase) and female quick connect
terminals on other ends by adding suffix -X to end of
part number.
Specifications
Rating 0.25 W at 55 °C
Taper Linear
Shaft Rotation 300° ±5°
Tolerance ±10 %
Shaft Diameter 0.25 in
P1004-95 & P1004-95-X:
Consult individual datasheet for
compatibility
P1004-174 & P1004-175:
PHS Series
P1004-16 & P1004-16-X:
Series: ERDM ERDI ERD3 TRB TRM
TRS TS1 TS6
P1004-15, P1004-14, P1004-13, P1004-12,
& P1004-12-X:
Series: ORB ORM ORS TAC1 THD7
TRB TRM TRS TS1 TS2
TS4 TS6 TSD7 TSU2000
PART NUMBER WITH WIRE LEADS VALUE
P1004-199 50 kΩ
P1004-174 100 kΩ
P1004-175 200 kΩ
P1004-95 P1004-95-X 100 kΩ
P1004-17 500 kΩ
P1004-16 P1004-16-X 1M Ω
P1004-15 1.5M Ω
P1004-14 2M Ω
P1004-12 P1004-12-X 3M Ω
P1004-13 5M Ω
P0700-7
Versa-Knob
Versa-Knob is designed for 0.25 in (6.35 mm) shaft
of Versa-Pot. Semi-gloss industrial black finish. P1004-XX-(X)
P0700-8
Lock Shaft
Fits 0.25 in (6.35 mm) potentiometer shafts. Locks
by tightening nut onto four tapered/slotted fingers.
Pressure on the shaft locks control against
mis-adjustment. Nickel plated brass finish.
P1004-XX-(X)
P1004-9
P1004-10
P1004-31
Mini-Pot
A high quality, industrial potentiometer for remote
time delay adjustment. The shaft extends through
the timer’s center hole for easy panel mounting. Use
mini-mount bracket for standup mounting of timer.
Adjustment by screwdriver or mini-knob. May be
ordered with two 3 in (7.6 cm) wires soldered to
pot (clockwise increase) and female quick connect
terminals on other ends by adding suffix -X to end of
part number.
Specifications
Rating 0.25 W at 55 °C
Taper Linear
Shaft Rotation 300° ±5°
Tolerance ±10 %
Shaft Diameter 0.125 in (3.2 mm)
Series: TAC1 TS1 TS2
TS4 TS6 TSD7
TSU2000
PART NUMBER VALUE
P1004-9 500kΩ
P1004-10 1MΩ
P1004-31 3MΩ
P0700-21
Mini-Knob
Mini-Knob is designed for 0.125 in (3.2 mm) shaft of
Mini-Pot. Semi-gloss industrial black finish. P1004-9 P1004-10 P1004-31
ACCESSORIES
14
For full datasheet, see pg. 81
Littelfuse.com/relayaccessories 486 © 2022 Littelfuse, Inc.
Accessories
Electrical
ELECTRICAL
ELECTRICAL ACCESSORIES
Product Features Accessory For
P0200-19
Heat Sink Compound
2 grams
P0200-20
Heat Sink Compound
100 grams
Single package/container of heat sink compound
consisting of primarily zinc oxide and having a 12
month shelf life (EOD date on the label). P0200-19
mounts one high current, plated 2 x 2 in (50.8 x
50.8 mm) timer or flasher. P0200-20 mounts
50+ units.
Any 2 x 2 in (50.8 x 50.8 mm) plated timer
or flasher.
P1015-18
Quick Connect
Screw Adaptor
Screw adaptor terminal designed for use with all
modules with 0.25 in (6.35 mm) male quick
connect terminals. Screw terminal accepts ring
or spade terminals.
Modules with 0.25 in (6.35 mm)
male quick connect terminals.
Consult the individual datasheet to
determine compatibility.
P1015-13
P1015-64
P1015-14
Female Quick
Connect Terminals
These 0.25 in (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
Consult individual datasheet to
determine compatibility.
P0400
Time Adjustment Dials
Dials for use with remote Versa-Pot and panel
mounted Mini-Pot. Reverse screen printed on clear
plastic to avoid damage to printed image.
P1004-9 P1004-10 P1004-12
P1004-13 P1004-16 P1004-31
P1004-95
PART NUMBER RANGE INCREMENTS
P0400-12 0.05 - 1 s 0.1 s
P0400-86 0.1 - 10 m 1 m
P0400-82 0.1 - 10 s 1 s
P0400-17 1 - 30 s 5 s
P0400-83 1 - 60 s 10 s
P0400-27 0 - 10 MRD*
*Multiplier Reference Dial
VTPXX
VTP
The VTP Series mounts on modules with in-line
adjustment terminals. Rated at 0.25 W at 55 °C.
Available in resistance values from 5 kΩ to 5 MΩ
Series: TAC1 THD7 THDM TS1
TS2 TS4 TS6 TSD7
PART NUMBER RT VALUE RANGE PART NUMBER RT VALUE RANGE
VTP0E 250 kΩ 0.5–20s VTP3L 2 MΩ 0.1–4 m
VTP1B 0.5 MΩ 0.05–3s VTP4B 3 MΩ 0.05–3 s
VTP1C 0.5 MΩ 0.1–10s VTP4F 3 MΩ 0.5–60 s
VTP1D 0.5 MΩ 0.5–10s VTP4J 3 MΩ 2–180 s
VTP2A 1 MΩ 0.05–1s VTP4P 3 MΩ 1–100 m
VTP2C 1 MΩ 0.1–10s VTP5G 5 MΩ 1–100 s
VTP2E 1 MΩ 0.5–20s VTP5K 5 MΩ 10–1000 s
VTP2F 1 MΩ 0.5–60s VTP5N 5 MΩ 0.1–10 m
VTP2J 1 MΩ 2–180s VTP5P 5 MΩ 1–100 m
VTP2P 1 MΩ 1–100m VTPDF 50 kΩ 0.5–60 s
VTP3B 2 MΩ 0.05–3s
ACCESSORIES
14
© 2022 Littelfuse, Inc. 487 Littelfuse.com/relayaccessories
Accessories
Electrical
ELECTRICAL
ELECTRICAL ACCESSORIES
Product Features Accessory For
LPSM003ZXID
Indicating Fuse Holder
LPSM003Z
Non-indicating Fuse Holder
Littelfuse POWR-SAFE Dead Front holders provide
optimum protection to personnel for Class CC and
Midget-Style fuses. 600 V ac/dc
Class CC and Midget-Style fuses
0KLK002.T
Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 V ac/500 V dc FH3P LPSM003ZXID LPSM003Z
VRM6048
Voltage Monitor
Accessory Module
The VRM6048 accessory module allows the voltage
monitor to monitor a 3-phase 550 to 600 V ac Line.
Adjustment If the measured line voltage
is 575 V ac, connect as shown
and adjust/select the voltage
monitor for 460 V ac operation.
Package Molded housing with
encapsulated circuitry
Mounting Surface mount with one #10
(M5 x 0.8) plastic screw. May
be DIN-rail mounted using
P1023-20 Adaptor.
Termination Screw terminals with captive
wire clamps for up to No.12
AWG wire.
Operating -40 °C to 70 °C
Storage -40 °C to 85 °C
Humidity 95 % relative, non-condensing
Voltage Input Output*
600 V ac 480 V ac
575 V ac 460 V ac
550 V ac 440 V ac
*The VRM6048 must be connected as shown. If the voltage
monitor is disconnected, the VRM output voltage equals the
input voltage.
Series: PLM
PLR
PLS
TVM
TVW
(manufactured after
December 2003)
VRM Module Voltage Monitor
575 V ac → 460 V ac
V150LA10AP
LA Varistor
The V150LA10AP, a transient voltage surge
suppressor, is a radial leaded varistors (MOVs) that
is designed to be operated continuously across ac
power lines. This UL Recognized varistor requires
very little mounting space.
Any of our products that operate below
150 V ac or 200 V dc.
PRODUCT
MAX. OPERATING VOLTAGE MAX IMPULSE
CURRENT 80.20 μs
CURRENT WAVE
(A)
VARISTOR VOLTAGE AT
1MA DC TEST CURRENT
PEAK CLAMPING VOLTAGE
WITH 80.20 μs WAVE
CAPACITANCE
DISC
DIAMETER
SIZE (MM) AC (V) DC (V) MIN. (V) MAX. (V) VC (V) 1PK (A)
V150LA10AP 150 200 4500 216 264 395 50 800 14
ACCESSORIES
14
Littelfuse.com/relayaccessories 488 © 2022 Littelfuse, Inc.
Accessories
Ground Reference Modules, High-Tension Couplers, & Relay Testers
GROUND-REFERENCE MODULES
Product Features Accessory For
SE-GRM024
Ground Reference
Module
Connects the SE-601 relay to an ungrounded 24 V dc bus. SE-601
SE-GRM048
Ground Reference
Module
Connects the SE-601 relay to an ungrounded 48 V dc bus. SE-601
SE-GRM125
Ground Reference
Module
Connects the SE-601 relay to an ungrounded 125 V dc bus. SE-601
SE-GRM250
Ground Reference
Module
Connects the SE-601 relay to an ungrounded 250 V dc bus. SE-601
SE-GRM500
Ground Reference
Module
Connects the SE-601 relay to an ungrounded 500 V dc bus. SE-601
SE-GRM780
Ground Reference
Module
Connects the SE-601 relay to an ungrounded 780 V dc bus. SE-601
SE-GRM1000
Ground Reference
Module
Connects the SE-601 relay to an ungrounded 1000 V dc bus. SE-601
HIGH-TENSION COUPLERS
Product Features Accessory For
PGH-5000
High Tension Couplers Allows 5 kV systems to be connected to relay. PGR-6100
PGR-3200
PGH-6000
High Tension Couplers Allows 6 kV systems to be connected to relay. PGR-6100
PGR-3200
PROTECTION RELAY TESTERS
Product Features Accessory For
SE-100T
Ground-Fault Relay Tester
Tests the current pickup level ground-fault protection. Tests
the entire ground-fault circuit.
Any Relay on Substations, MCCs,
Central Distribution Panels,
Switchboards, and Test Benches
SE-400
Ground-Fault-Relay Test Unit
Tests the current pickup level, time delay and coordination of
ground-fault protection. Tests the entire ground-fault circuit.
Any Relay on Substations, MCCs,
Central Distribution Panels,
Switchboards, and Test Benches
GR MODULES, HIGH-TENSION COUPLERS, & RELAY TESTERS
ACCESSORIES
14
© 2022 Littelfuse, Inc. 489 Littelfuse.com/relayaccessories
Accessories
Remote Indication
INPUT MODULES & METERS
REMOTE INDICATION & METERS
Product Features Accessory For
RK-105
Remote Indication
and Reset Assembly
Panel-mounted remote indication and reset with NEMA 1 rating. SE-105
SE-107
RK-105I
Remote Indication
Assembly
Panel-mounted remote indication with NEMA 1 rating. SE-105
SE-107
RK-102
Industrial Remote Indication
and Reset Kit
Panel-mounted remote indication and reset, standard 22 mm
mounting, with NEMA 4 and NEMA 13 rating.
SE-105
SE-107
RK-132
Industrial Remote Indication
and Reset Kit
Panel-mounted remote indication and reset, standard 22 mm
mounting, with NEMA 4 and NEMA 13 rating.
SE-134C
SE-135
SE-145
RK-325
Remote Indication
and Reset Assembly
Panel-mounted remote indication and reset with NEMA 1 rating. SE-325
INPUT MODULES
Product Features Accessory For
MPS-RTD
Temperature Input Module
Provides 8 programmable inputs to connect Pt100, Ni100, Ni120,
and Cu10 RTDs.
MPU-32
MPS
MPS-DIF
Differential Current Module
Adds motor differential protection, compatible with core balance
and summation current transformer connections.
MPU-32
MPS
MPU-CIM
Current Input Module
Interface between current transformers and MPU-32 or
FPU-32 series relays. Reduces potential for open CT hazard.
MPU-32
FPU-32
PGA-LS10
Point Sensor
Line-of-sight light sensor detects an arc as small as 3 kA within a
2 m half-sphere. Local LED continually displays sensor health or
trip state.
PGR-8800 AF0500
AF0100
PGA-LS20
Fiber-Optic Sensor
Used to detect light and coordinate with current detection to
eliminate nuisance tripping. 8 m (26.2 ft) active; 10 m (32.8 ft) total.
PGR-8800 AF0500
AF0100
PGA-LS30
Fiber-Optic Sensor
Used to detect light and coordinate with current detection to
eliminate nuisance tripping. 18 m (59 ft) active; 20 m (66 ft) total
PGR-8800 AF0500
AF0100
A0200/A0300
Light Sensor
Line-of-sight light sensor detects an arc as small as 3 kA within a
2 m halfsphere. Available in both 180° and 360°. D0920
A0220
Arc Detecting Point Sensor
Line-of-sight light sensor detects an arc as small as 3 kA within a
2 m half-sphere. Available with 10 or 15 m cable.
Full datasheet and ordering information available at
Littelfuse.com/a0220
PGR-8800 AF0500
AF0100 D0920
D1000
LCSC10T12
Toroidal Current Sensor
Remote monitoring of currents up to 50 A.
Inner diameter 9.14 mm (0.36”) DCSA Series
ACCESSORIES
14
For full datasheet and ordering information, see pg. 80
Littelfuse.com/relayaccessories 490 © 2022 Littelfuse, Inc.
Accessories
Remote Indication
REMOTE INDICATION & METERS
Product Features Accessory For
RK-325I
Remote Indication
Assembly
Panel-mounted remote indication with NEMA 1 rating. SE-325
RK-302
Remote Indication
and Reset Kit
Panel-mounted remote indication and reset, standard 22 mm
mounting with NEMA 4 and NEMA 13 rating. SE-325
RK-332
Remote Indication
and Reset Kit
Panel-mounted remote indication and reset, standard 22 mm
mounting with NEMA 4 and NEMA 13 rating.
SE-330 SE-330AU
SE-330HV
PGA-0500
Analog % Current Meter
Panel-mounted analog meter displays ground-fault current
as a percentage of the set point.
SE-601
PGR-4300
PGR-6100
SE-701
SE-703
SE-704
PGA-0510
Analog Ohm Meter
Panel-mounted analog ohmmeter displays insulation resistance
from 0 Ω to infinity.
PGR-3200 PGR-6100
PGR-6101-120
SENSING RESISTORS
Product Features Accessory For
ER-600VC (PGE-600V)
Sensing Resistor Used on systems up to 1 kV. (Continuous duty) SE-330 SE-325
SE-330AU
SE-MRE-600
Enclosure Used in outdoor enclosures. (ER-600 VC ordered separately) ER-600VC
ER-5KV (PGE-05KV)
Sensing Resistor Used on systems up to 5 kV. (Continuous duty) SE-330 SE-325
SE-330AU
ER-5WP (PGE-05WV)
Sensing Resistor
Used on systems up to 5 kV, includes weather-protected
terminals for use in outdoor enclosures. (Continuous duty)
SE-330 SE-325
SE-330AU
ER-15KV (PGE-15KV)
Sensing Resistor Used on systems up to 15 kV. (Non-continuous duty) SE-330 SE-325
SE-330AU SE-330HV
ER-25KV (PGE-25KV)
Sensing Resistor Used on systems up to 25 kV. (Non-continuous duty) SE-330 SE-325
SE-330AU SE-330HV
ER-35KV (PGE-35KV)
Sensing Resistor Used on systems up to 35 kV. (Non-continuous duty) SE-330 SE-330AU
SE-330HV
ER-72KV (PGE-72KV)
Sensing Resistor Used on systems up to 72 kV. (Non-continuous duty) SE-330HV
METERS & SENSING RESISTORS
ACCESSORIES
14
© 2022 Littelfuse, Inc. 491 Littelfuse.com/relayaccessories
Accessories
Remote Indication
REMOTE INDICATION & MONITORING
REMOTE INDICATORS & MONITORS
Product Features Accessory For
RM1000
RM1000-3R
RM1000 NEMA 4
Motor-monitoring Device
Motor-monitoring device to be used in conjunction with the
777 family of products (excluding the P1 Series), 77C family of
products, and the 601 voltage monitors, via Modbus protocol
with a communications module. The RM1000/777 motor
management system combines unsurpassed electronic motor
protection and critical, user-friendly, motor monitoring.
Full datasheet available at Littelfuse.com/rm1000
777 series
77C series
601 series
RM2000
RM2000CBM+
RM2000-RTDW
Motor-monitoring Device
Motor-monitoring device to be used in conjunction with the
777 family of products (excluding the P1 Series), 77C family
of products and the Model 601 voltage monitors, via Modbus
protocol with a communications module. The RM2000/777
motor management system combines unsurpassed electronic
motor protection and critical, user-friendly, motor monitoring.
Full datasheet available at Littelfuse.com/rm2000
777 series
77C series
601 series
INFORMER
Remote diagnostic tool
Hand-held diagnostic tool designed for use with single-phase
pump relays. The Informer uses an infrared receiver to access
information sent from the relay which can be helpful for
troubleshooting the system. Comes with IR Kit-12 (12" long).
Full datasheet available at Littelfuse.com/informer
111P 111-Insider-P
111P-ENCL 231-Insider-P
232-Insider 233P-1.5
233P-ENCL 233P-1.5-ENCL
234-P 235P
235P-ENCL
IR Kit-36 (36" long)
Informer Fiber Optic Kit
Use with the Informer. Simply attaches to the face of the unit
to provide remote diagnostics without opening the panel.
LSRX1 111-Insider-P 455
LSRX-C 231-Insider-P
INFORMER-MS
Remote diagnostic tool
Hand-held diagnostic tool designed for use with the Littelfuse
455 series. The Informer-MS uses an infrared receiver to read
valuable information transmitted from the 455, which can be
helpful for troubleshooting the system
Full datasheet available at Littelfuse.com/informer-ms
455 series
OL-RESET
Remote Reset Module
Allows the 777 line of motor and pump relay products to
be manually reset without opening the panel door. Simply
connect the module to the 777 communication port, connect
a wire to each of the two applicable pins on the OL-RESET
and to a normally-open push-button switch (sold separately).
Mount the push-button switch in a convenient location.
777 series
777-MRSW
Manual Remote Reset Kit
(24” long)
Allows the 777 line of motor and pump relay products to
be manually reset without opening the panel door. Simply
connect the 9-pin adapter to the 777 communication port and
mount the push-button switch in a convenient location.
777 series
M500
Electronic Megohmmeter
Automatic, portable, battery-powered insulation tester. This unit is specifically designed as an
inexpensive alternative to costly swing needle megohmmeters. The M500 measures insulation
resistance values of motors, generators and transformers up to 1000 megohms at 500 V ac, indicating
the condition of insulation on the zone scale. Its compact design and ease of use makes the M500 a
great diagnostic tool for motor rewind shops, electrical maintenance personnel and pump installers.
ACCESSORIES
14
For full datasheet, see pg. 246
For full datasheet, see pg. 248
For full datasheet, see pg. 250
For full datasheet, see pg. 252
Littelfuse.com/relayaccessories 492 © 2022 Littelfuse, Inc.
Accessories
Communication
COMMUNICATION ADAPTERS & MODULES
COMMUNICATION ADAPTERS
Product Features Accessory For
RS485-RS232
Converter with cable
& plug
Allows RS485 devices to be connected to a PC via the
RS232 (serial) port. The converter provides convenient
terminal blocks for making signal and dc power supply
connections. An optional power supply may be required for
laptops or other computers with low power serial ports, or
for very large networks. Pre-wired for easy installation on the
RS485MS-2W module.
RS485MS-2W
RS485-USB
Converter with cable
& plug/RS232:USB
Allows RS485 devices to be connected to a PC via the USB
port. The converter provides convenient terminal blocks for
making signal and dc power supply connections. An optional
power supply may be required for laptops or other computers
with low power serial ports, or for very large networks.
Pre-wired for easy installation on the RS485MS-2W module.
RS485MS-2W
AC700-CUA
Communications Adapter
Optical network-interface and firmware-upgrade
communication adapter. Field-installed. EL731
COMMUNICATION MODULES
Product Features Accessory For
RS485MS-2W
Communication Module
This module is required when the RM1000, RM2000 or other
Modbus capable device is used with 77X-type products.
Full datasheet available at Littelfuse.com/rs485ms2w
Series: RM1000 77X
RM2000
CIO-DN-P
CIO-120-DN-P
Communication link to PLC/
SCADA/monitoring systems
Convenient and cost-effective Devicenet™ interfaces capable
of providing discrete control and monitoring of motor starters,
drives and other devices over a Devicenet network.
Full datasheet available at Littelfuse.com/ciodnp-cio120dnp
777 series
CIO-EN
Communication link to PLC/
SCADA/monitoring systems
The CIO-EN Module (non-POE) is a convenient and costeffective Modbus-TCP and Modbus-RTU interface capable of
providing discrete control and monitoring of an overload relay
over a Modbus network.
Full datasheet available at Littelfuse.com/cioen
777 series
CIO-MB
CIO-120-MB
Communication link to PLC/
SCADA/monitoring systems
Convenient and cost-effective Modbus-RTU interfaces capable
of providing discrete control and monitoring of an overload
relay over a Modbus network.
Full datasheet available at Littelfuse.com/ciomb-cio120mb
777 series
CIO-777-PR
Communication link to PLC/
SCADA/monitoring systems
Convenient and cost-effective Profibus interface capable of
providing discrete control and monitoring of motor starters,
drives and other devices over a Profibus network.
Full datasheet available at Littelfuse.com/cio777pr
777 series ending in P, -P, or -P2
CIO-601CS-DN-P1
Convenient and cost-effective DeviceNet device capable of
providing discrete control and monitoring of motor starters,
drives and other devices over a DeviceNet network.
601-CS-D-P1
COM 4-20
Communication link to PLC/
SCADA/monitoring systems
Send a 4-20 mA signal proportional to the output power. It can
also be used to send the input power by setting the efficiency
setting on the 777-AccuPower monitor to one. This module
allows communication to a PLC with an analog input and no
Modbus input.
Full datasheet available at Littelfuse.com/com420
777-AccuPower
ACCESSORIES
14 For full datasheet, see pg. 254
For full datasheet, see pg. 257
For full datasheet, see pg. 260
For full datasheet, see pg. 255
For full datasheet, see pg. 259
For full datasheet, see pg. 261
© 2022 Littelfuse, Inc. 493 Littelfuse.com/relayaccessories
Accessories
Terminations & Adapters
TERMINATIONS & ADAPTERS
Product Features Accessory For
1N5339B
Termination Device
5 W axial-lead ground-check termination. Included with SE-105
and SE-107.
SE-105
SE-107
SE-TA6-SM
Stud-Mount Termination
Assembly
50 W ground-check termination that is robust and compact for
submersible pumps. Wire lead simplifies installation.
(Replacement for 1N4553B)
SE-105
SE-107
SE-TA6
Termination Assembly
50 W ground-check termination with convenient mounting holes and
screw terminals.
SE-105
SE-107
SE-TA6A
(PGA-0T6A)
Termination Assembly
Temperature compensated 50 W ground-check termination with
convenient mounting holes and screw terminals.
SE-105
SE-107
SE-134C
SE-TA6A-WL
Termination Assembly
Temperature compensated 50 W ground-check termination with
convenient mounting holes and screw terminals.
SE-105
SE-107
SE-134C
SE-TA6ASF-WL
Small-Format Termination
Assembly with Wire Leads
Temperature compensated 12 W ground-check termination, ideal for
use in cable-coupler end caps and submersible pumps. Mounting
holes and wire leads.
SE-105
SE-107
SE-134C
SE-TA12A
Termination Assembly
Temperature compensated 50 W ground-check termination with
convenient mounting holes and screw terminals.
SE-135
SE-145
SE-TA12ASF-WL
Small-Format Termination
Assembly with Wire Leads
Temperature compensated 12 W ground-check termination, ideal for
use in cable-coupler end caps and submersible pumps. Mounting
holes and wire leads.
SE-135
SE-145
SE-TA12A-WL
Termination Assembly
Temperature compensated 50 W ground-check termination with
convenient mounting holes and screw terminals.
SE-135
SE-145
SE-TA12A
SE-TA12B
Termination Assemblies
Used together to allow an SE-134C to monitor a splitter box and
two cables. SE-134C
PPI-600V
Parallel Path Isolator
Parallel ground-path rejection for ground-check monitors. Eliminates
intermachine arcing and prevents stray dc currents from flowing in a
monitored ground wire.
SE-105 SE-107
SE-134C SE-135
RK-13
Relay Interface Module
Separate ground-fault and ground-check indication contacts for the
SE-105, and separate ground-fault and resistor-fault contacts for the
SE-325. Used to provide output to a PLC and operate standard pilot
lights. Complete with conformally coated circuit boards.
SE-105
SE-107
SE-325
SE-485-DIN
Industrial RS-485 to RS-232
Converter
Industrial network quality RS-485 to RS-233 serial converter.
DIN-rail mounted, 24 V dc required.
MPS
FPS
SE-485-PP
Port-Powered Serial
Converter
Converts an RS-485 signal to an RS-232 signal. Used for set-point
programming and updating flash memory. 115.2 kbit/s maximum
transfer rate.
MPU-32 MPS
FPU-32 FPS
CA-945
Serial Connector Adapter Kit
Connects an RJ45 to a 9-pin serial connector. Includes 1.5 m cable
and plug-in adapter.
MPU-32
FPU-32
SE-ICUSB232
USB to RS-232 Converter Connects a 9-pin serial cable to a USB port.
SE-330 CA-945
SE-330AU SE-330HV
SE-485-PP SE-485-DIN
TERMINATIONS & ADAPTERS
ACCESSORIES
14
Accessories
Liquid Level Control
Littelfuse.com/relayaccessories © 2022 Littelfuse, Inc.
LIQUID LEVEL PROBES & PROBE HOLDERS
LIQUID LEVEL CONTROL ELECTRODES
Product Features Accessory For
LLP-24
Liquid Level Probe
Threaded stainless steel probe measuring 24 in (61 cm)
long. Designed for use with PHST-38QTN liquid level
control electrodes.
PHST-38QTN
PHST-38QTN
Probe Holder
P0700-409
Protective Boot
Designed for use with all conductive liquid level controls.
Composed of insulators and metal parts made of number
300 series stainless steel. These internally conductive probe
holders are designed for a maximum steam pressure of
240 PSI; 400 °F maximum. Maximum voltage from electrode
to ground. PHST-38QTN is UL 353 Recognized.
Series: LLC1 LLC2 LLC4
LLC5 LLC6 LLC8
PC-XXX-LLC-CZ
PC-XXX-LLC-GM
460-15-100-LLS
Inches (Millimeters)
4.20 (106.68) REF
3/8” NPT
NO.8–32 THDS
2.25 +.05 (57.15 +1.27)
.68
(17.27)
REF
.75
(19.05)
.80 MAX
(19.05)
.74 MIN
(18.80)
ACCESSORIES
14 494
ACCESSORIES
14 Accessories
Liquid Level Control
© 2022 Littelfuse, Inc. 495 Littelfuse.com/relayct
Accessories
Current Transformers (CTs)
CT SELECTION GUIDE
PRODUCT GROUND-FAULT CT GROUND-FAULT TRIP LEVEL
(or insulation level) PHASE CTS PAGE #
SE-601 No CTs required 1–20 mA N/A –
PGR-3100 No CTs required Indication only N/A –
PGR-3200 No CTs required Warnings at 30 kΩ & 50 kΩ
Alarm at 10 kΩ N/A –
SE-701/SE-703
CT200 series 10–198 A
N/A
480
EFCT series 50 mA–4.95 A 480
SE-CS30 series 300 mA–29.7 A 480
SE-704 SE-CS30 series 10 mA–5 A N/A 480
EL731 EFCT series 30–5,000 mA ac and dc N/A 480
SE-105/SE-107 CT200 series 0.5–4 A N/A 480
SE-134C/SE-135 SE-CS10 series 0.5–12.5 A N/A 480
SE-330
CT200 series 12–200 A
N/A
480
EFCT series 100 mA–5 A 480
SE-CS30 series 600 mA–30 A 480
SE-325 CT200 series 0.5–4 A N/A 480
MPU-32*
CT200 series 10–200 A
N/A
480
EFCT series 50 mA–5 A 480
SE-CS30 series 300 mA–30 A 480
MPS*
CT200 10–200 A
1-A, 5-A Secondary CTs
480
EFCT series
(5-A Primary) 50 mA–5 A 480
SE-CS30 series
(30-A Primary) 300 mA–30 A 480
MPU-32-X69X-PMA16 Existing CTs can be used
or same as MPU-32. 480
MPS-469X-PMA24 Existing CTs can be used
or same as MPS. 480
FPU-32*
CT200 series 10–200 A
1-A, 5-A Secondary CTs
480
EFCT series 50 mA–5 A 480
SE-CS30 series 300 mA–30 A 480
FPS*
CT200 10–200 A
1-A, 5-A Secondary CTs
480
EFCT series
(5-A Primary) 50 mA–5 A 480
SE-CS30 series
(30-A Primary) 300 mA–30 A 480
PGR-8800‡ N/A N/A 5-A Secondary CTs
(optional) 480
Note: See page 502 for additional information on CT selection. See page 482 for CT sizing chart.
*Phase CTs should be selected with a primary rating of 100–300 % of rated current to maintain specified accuracy.
‡Select a CT with a primary rating approximately equal to the system’s rated current.
GROUND-FAULT
PROTECTION
GROUNDCONDUCTOR
MONITORING
RESISTANCE
GROUNDING
MOTOR & PUMP
PROTECTION
FEEDER
PROTECTION
ARC-FLASH
PROTECTION
ACCESSORIES
14
Littelfuse.com/relayct 496 © 2022 Littelfuse, Inc.
Accessories
Current Transformers (CTs)
CURRENT TRANSFORMERS
CURRENT TRANSFORMERS
Product Features Inner Diameter Accessory For
CT200 (PGC-2056)
Current Transformer
Detects phase current or ground-fault
current (200-A primary)
56 mm
(2.20")
FPS FPU-32 MPS
MPU-32 PGR-8800 SE-105/107
SE-330 SE-325 SE-701
CT200L (PGC-2089)
Current Transformer
Detects phase current or ground-fault
current (200-A primary)
89 mm
(3.50")
FPS FPU-32 MPS
MPU-32 PGR-8800 SE-105
SE-107 SE-701
EFCT-26 (PGC-3026)
Ground-Fault Current
Transformer
Sensitive current transformer used to
detect ground-fault current (5-A primary)
26 mm
(1.02")
EL731 FPS FPU-32
MPS MPU-32 SE-330
SE-701
EFCT-1 (PGC-3082)
Ground-Fault Current
Transformer
Sensitive current transformer used to
detect ground-fault current (5-A primary)
82 mm
(3.23")
EL731 FPS FPU-32
MPS MPU-32 SE-330
SE-701
EFCT-2 (PGC-3140)
Ground-Fault Current
Transformer
Sensitive current transformer used to
detect ground-fault current (5-A primary)
140 mm
(5.50")
EL731 FPS FPU-32
MPS MPU-32 SE-701
EFCT-1FC (PGC-31FC)
Flux Conditioner
Fits in the EFCT-1 window to reduce
saturation and prevent false operation
due to large surge currents
70 mm
(2.75") EFCT-1
SE-CS10-2.5 (PGC-4064)
Current Sensor Detects ground-fault current 64 mm
(2.50") SE-134C SE-135 SE-145
SE-CS10-4 (PGC-4108)
Current Sensor Detects ground-fault current 108 mm
(4.25") SE-134C SE-135 SE-145
SE-CS10-6 (PGC-4160)
Current Sensor Detects ground-fault current 160 mm
(6.31") SE-134C SE-135 SE-145
SE-CS10-8 (PGC-4210)
Current Sensor Detects ground-fault current 210 mm
(8.25") SE-134C SE-135 SE-145
SE-CS30-26 (PGC-5025)
Ground-Fault Current Transformer
Current Transformer for low-level
ground faults, flux conditioner
is standard (30-A primary)
25 mm
(0.98")
FPS FPU-32 MPS
MPU-32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS30-70 (PGC-5060)
Ground-Fault Current Transformer
Current Transformer for low-level
ground faults, flux conditioner
is standard (30-A primary)
60 mm
(2.36")
FPS FPU-32 MPS
MPU-32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS30-4 (PGC-5095)
Ground-Fault Current Transformer
Current Transformer for low-level
ground faults, flux conditioner
is standard (30-A primary)
95 mm
(3.74")
FPS FPU-32 MPS
MPU-32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS30-5 (PGC-5130)
Ground-Fault Current Transformer
Current Transformer for low-level
ground faults, flux conditioner
is standard (30-A primary)
130 mm
(5.12")
FPS FPU-32 MPS
MPU-32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS30-8 (PGC-5200)
Ground-Fault Current Transformer
Current Transformer for low-level
ground faults, flux conditioner
is standard (30-A primary)
200 mm
(7.87")
FPS FPU-32 MPS
MPU-32 PGR-6100 PGR-6101
SE-330 SE-701 SE-704
SE-CS40-6
Current Sensor Detects ground-fault current 160 mm
(6.31”) SE-135 SE-145
NOTE: Contact factory for additional CT offerings.
ACCESSORIES
14
© 2022 Littelfuse, Inc. 497 Littelfuse.com/relayct
Accessories
Current Transformers (CTs)
INSTRUMENTATION & METERING TRANSFORMERS
Dimensional Drawing
2RL 56RL 76RL
DONUT STYLE
2SFT 56SFT 76SFT
FOOT MOUNTED WITH BRASS TERMINALS
Donut Style Foot Mounted
Description
Littelfuse offers a wide array of instrument rated current
transformers in 1–3 inch diameter opening.
Voltage class: 600 V
BIL rating: 10 kV
Certification: cRUus (WICC File E100575)
Ordering Information
DONUT MODEL WINDOW CURRENT RATIO
CT-0050-D10 1.0" 50:5
CT-0075-D10 1.0" 75:5
CT-0100-D10 1.0" 100:5
CT-0150-D10 1.0" 150:5
CT-0200-D10 1.0" 200:5
CT-0300-D10 1.0" 300:5
CT-0200-D20 2.0" 200:5
CT-0300-D20 2.0" 300:5
CT-0400-D20 2.0" 400:5
CT-0500-D20 2.0" 500:5
FOOTED MODEL WINDOW CURRENT RATIO
CT-0050-F10 1.0" 50:5
CT-0100-F10 1.0" 100:5
CT-0150-F10 1.0" 150:5
CT-0200-F10 1.0" 200:5
CT-0300-F10 1.0" 300:5
CT-1200-F15 1.5" 1200:5
CT-0150-F20 2.0" 150:5
CT-0200-F20 2.0" 200:5
CT-0300-F20 2.0" 300:5
CT-0400-F20 2.0" 400:5
CT-0600-F20 2.0" 600:5
CT-0400-F30 3.0" 400:5
CT-0800-F30 3.0" 800:5
CT - xxx - D10
Style
Series
Window Size
Current Ratio
D = Donut Style
F = Footed Style
10 = 1.0 inch
15 = 1.5 inches
20 = 2.0 inches
30 = 3.0 inches xxx:5 current ratio
Part Numbering System
ACCESSORIES
14
Littelfuse.com/relayct 498 © 2022 Littelfuse, Inc.
Accessories
Current Transformers (CTs)
INSTRUMENTATION AND METERING TRANSFORMERS
Product Features Inner Diameter Accessory For
CT-XXXX-DXX
Series
Donut Style Transformer
Littelfuse offers a wide array of
instrument rated current transformers in
1–3 inch diameter opening.
Full datasheet and ordering information
available at Littelfuse.com/ctxxxxdxx
25.4 - 76.2 mm
(1 - 3")
Series:
777 DCSA ECS
ECSW LSR-0 LSR-XX
LSRU LSRX TCS
TCSA LCSC10T12
CT-XXXX-FXX
Series
Footed Style Transformer
Littelfuse offers a wide array of
instrument rated current transformers in
1–3 inch diameter opening.
Full datasheet and ordering information
available at Littelfuse.com/ctxxxxfxx
25.4 - 76.2 mm
(1 - 3")
Series:
777 DCSA ECS
ECSW LSR-0 LSR-XX
LSRU LSRX TCS
TCSA LCSC10T12
INSTRUMENTATION & METERING TRANSFORMERS
Installation Instructions:
When installing the Zero-Sequence CTs,
ensure the following:
1. Only the load carrying conductors pass
through the center of the CT. This means
L1 + N for 1-phase and L1+ L2 + L3 for
3-phase.
2. The power conductors pass through
the center of the CT and are preferably
bound together to keep the conductors
uniformly spaced.
3. The power conductors pass perpendicular
to the CT and, where practical, continue
perpendicular to the CT on both sides of
the CT for 3”.
4. The power conductors should not be
installed in a way that allows them to run
along the side edges of the CT.
5. Where practical, locate the CT away
from noise-generating devices such as
transformers, frequency converters, etc.
Current Transformer Sizing Chart
Conductor
Size
(AWG/kcmil)
Minimum CT Window Size (Inner Diameter in mm)
Number of Conductors
1 3 4 6 8 12
12 4 8 9 11 13 15
10 6 10 11 14 16 19
8 7 12 14 17 20 24
6 9 15 18 22 25 31
4 11 19 22 28 32 39
3 13 22 25 31 36 44
2 14 25 28 35 40 49
1 16 28 32 39 45 55
1/0 18 31 36 44 51 62
2/0 20 35 40 49 57 69
3/0 23 39 45 55 64 78
4/0 25 44 51 62 72 88
250 28 48 55 67 78 95
350 33 56 65 80 92 113
500 39 67 78 95 110 135
750 48 82 95 117 135 165
1000 55 95 110 135 156 191
ACCESSORIES
14 For full datasheet and ordering information,
see page 481.
For full datasheet and ordering information,
see page 481.
© 2022 Littelfuse, Inc. 499 Littelfuse.com/relayct
Accessories
Current Transformers (CTs)
ELCT SERIES
Description
TThe ELCT series is a sensitive current transformer with
integrated flux conditioner used with Littelfuse relays to detect
low levels of earth-leakage current.
Accessories
CBLTP
Twisted-pair wire for connection to CT.
Order in desired length in meters.
Specifications
Current Rating ELCT5: 5:0.05 A
ELCT30: 30:0.05 A
Accuracy ELCT5: 3 % @ 0.01 VA
ELCT30: 3 % @ 0.06 VA
Frequency 50 to 400 Hz
Insulation Level 600 V
Operating Temperature -40 °C to 55 °C (-40 °F to 131 °F)
Application SE-701
Wire Gauge 0.05-3.3 mm2
(12–30 AWG)
Tightening Torque 0.5 N-m
Certification UL, cUL, CE
Compliance RoHS, IEC 61869-2, ANSI/IEEE C57.13
Note: One frequency response may be extended for specific product families
Ordering Information
ORDERING NUMBER TURNS
RATIO WINDOW SIZE, ID WEIGHT
ELCT5-31 100:1 31 mm (1.22 in) 127.0 g (0.28 lbs)
ELCT5-88 100:1 88 mm (3.46 in) 635.0 g (1.40 lbs)
ELCT30-31 600:1 31 mm (1.22 in) 131.5 g (0.29 lbs)
ELCT30-88 600:1 88 mm (3.46 in) 680.4 g (1.50 lbs)
0.01
0.1
0.1
1.0
1.0
5.0
10.0 50.0
SECONDARY EXCITING VOLTAGE (VOLTS)
ELCT5-31 ELCT5-88
SECONDARY EXCITING CURRENT (MILLIAMPERES)
0.1
1.0
0.1
10.0
1.0
50.0
10.0 50.0
SECONDARY EXCITING VOLTAGE (VOLTS)
ELCT30-31 ELCT30-88
SECONDARY EXCITING CURRENT (MILLIAMPERES)
Current Transformer
ACCESSORIES
14
Littelfuse.com/relayct 500 © 2022 Littelfuse, Inc.
Accessories
Current Transformers (CTs)
ELCT SERIES
Dimensions and Mounting Diagram
Inches [millimeters]
Mount the ELCT5-31 and ELCT30-31 using M5 or #10 screws.
Mount the ELCT5-88 and ELCT30-88 using M6 or 1/4" screws.
CONNECTION
CTs should be wired according to the diagram below:
DIMENSIONS AND MOUNTING DIAGRAM
Dimensions shown are Inches (millimeters). Mount the CT using M5 or #8 screws.
ELCT5-31 and ELCT30-31 ELCT5-88 and ELCT30-88 73.36 2.888
72.64
2.860
31.56
1.243
36.34
1.431
55.97
2.204
33.72
1.328
46.80
1.843
20.64
0.813
2.41
R0.095
62.28
2.452
7.62
0.300
WEIGHT: SHEET 1 OF 1
PART NUMBER: REV
DESCRIPTION:
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWISE
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL 0.01
THREE PLACE DECIMAL 0.005
NOT DRAWN TO SCALE
73.36
2.888
36.34
1.431
33.72
1.328
2.41
R0.095
62.28
2.452
7.62
0.300
WEIGHT: SHEET 1 OF 1
PART NUMBER: REV
DESCRIPTION:
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWISE
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL 0.01
THREE PLACE DECIMAL 0.005
NOT DRAWN TO SCALE
73.36
2.888
72.64
2.860
31.56
1.243
36.34
1.431
55.97
2.204
33.72
1.328
46.80
1.843
20.64
0.813
2.41
R0.095
62.28
2.452
7.62
0.300
WEIGHT: SHEET 1 OF 1
PART NUMBER: REV
DESCRIPTION:
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWISE
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL 0.01
THREE PLACE DECIMAL 0.005
NOT DRAWN TO SCALE
145.42
5.725
87.73
3.454
75.60
2.976
137.69
5.421
61.09
2.405
28.58
1.125
3.38
R0.133
44.83
1.765
115.59
4.551
7.62
0.300
NAME DATE
DRAWN BY
MATERIAL
UNDIMTOFRAANTWTHRNO145.42
5.725
87.73
3.454
75.60
2.976
137.69
5.421
61.09
2.405
28.58
1.125
3.38
R0.133
44.83
1.765
115.59
4.551
134.12
5.280
7.62
0.300
WEIGHT: SHEET 1 OF 1
PART NUMBER: REV
DESCRIPTION:
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWISE
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL 0.01
THREE PLACE DECIMAL 0.005
NOT DRAWN TO SCALE
145.42
5.725
87.73
3.454
75.60
2.976
137.69
5.421
61.09
2.405
28.58
1.125
3.38
R0.133
44.83
1.765
115.59
4.551
7.62
0.300
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWDIMENSIONS ARE IN INCTOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL THREE PLACE DECIMAL NOT DRAWN TO SCALE
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse
products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.
H1 H2
X1 X2
TOPVIEW AND MOUNTING DETAIL
FRONTVIEW
SIDEVIEW
090-04583-00
ACCESSORIES
14
© 2022 Littelfuse, Inc. 501 Littelfuse.com/relayct
Accessories
Current Transformers (CTs)
ZSCT SERIES
Description
The ZSCT series is a current transformer used with Littelfuse
relays to detect low levels of earth-leakage current.
Accessories
CBLTP
Twisted-pair wire for connection to CT.
Order in desired length in meters.
Specifications
Current Rating ZSCT5: 5:0.05 A
ZSCT30: 30:0.05 A
Accuracy ZSCT5: 3 % @ 0.01 VA
ZSCT30: 3 % @ 0.06 VA
Frequency 50 to 400 Hz
Insulation Level 600 V
Operating Temperature -40 °C to 55 °C (-40 °F to 131 °F)
Application MP8000
Wire Gauge 0.05-3.3 mm2
(12–30 AWG)
Tightening Torque 0.5 N-m
Certification UL, cUL, CE
Compliance RoHS, IEC 61869-2, ANSI/IEEE C57.13
Note: One frequency response may be extended for specific product families
Ordering Information
ORDERING NUMBER TURNS
RATIO WINDOW SIZE, ID WEIGHT
ZSCT5-31 100:1 31 mm (1.22 in) 117.9 g (0.26 lbs)
ZSCT5-88 100:1 88 mm (3.46 in) 499.0 g (1.10 lbs)
ZSCT30-31 600:1 31 mm (1.22 in) 113.4 g (0.25 lbs)
0.01
0.1
0.1
1.0
1.0
5.0
10.0 50.0
SECONDARY EXCITING VOLTAGE (VOLTS)
ZSCT5-31 ZSCT5-88
SECONDARY EXCITING CURRENT (MILLIAMPERES)
0.1
1.0
10.0
50.0
SECONDARY EXCITING VOLTAGE (VOLTS)
ZSCT30-31
SECONDARY EXCITING CURRENT (MILLIAMPERES)
0.1 1.0 10.0 50.0
Current Transformer
ACCESSORIES
14
Littelfuse.com/relayct 502 © 2022 Littelfuse, Inc.
Accessories
Current Transformers (CTs)
ZSCT SERIES
Dimensions and Mounting Diagram
Inches [millimeters]
Mount the ZSCT5-31 and ZSCT30-31 using M5 or #10 screws.
Mount the ZSCT5-88 using M6 or 1/4" screws.
CONNECTION
CTs should be wired according to the diagram below:
DIMENSIONS AND MOUNTING DIAGRAM
Dimensions shown are Inches (millimeters). Mount the CT using M5 or #8 screws.
ZSCT5-31 and ZSCT30-31 ZSCT5-88 73.36 2.888
72.64
2.860
31.56
1.243
36.34
1.431
55.97
2.204
33.72
1.328
46.80
1.843
20.64
0.813
2.41
R0.095
62.28
2.452
7.62
0.300
WEIGHT: SHEET 1 OF 1
PART NUMBER: REV
DESCRIPTION:
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWISE
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL 0.01
THREE PLACE DECIMAL 0.005
NOT DRAWN TO SCALE
73.36
2.888
72.64
2.860
31.56
1.243
36.34
1.431
55.97
2.204
33.72
1.328
46.80
1.843
20.64
0.813
2.41
R0.095
62.28
2.452
7.62
0.300
WEIGHT: SHEET 1 OF 1
PART NUMBER: REV
DESCRIPTION:
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWISE
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL 0.01
THREE PLACE DECIMAL 0.005
NOT DRAWN TO SCALE
145.42
5.725
87.73
3.454
75.60
2.976
137.69
5.421
61.09
2.405
28.58
1.125
3.38
R0.133
44.83
1.765
115.59
4.551
7.62
0.300
NAME DATE
DRAWN BY
MATERIAL
UNDIMTOFRAANTWTHNO145.42
5.725
87.73
3.454
75.60
2.976
137.69
5.421
61.09
2.405
28.58
1.125
3.38
R0.133
44.83
1.765
115.59
4.551
7.62
0.300
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWDIMENSIONS ARE IN INCTOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL THREE PLACE DECIMAL NOT DRAWN TO SCALE
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse
products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.
H1 H2
X1 X2
TOPVIEW AND MOUNTING DETAIL
FRONTVIEW
SIDEVIEW
090-04588-00
73.36
2.888
36.34
1.431
33.72
1.328
2.41
R0.095
62.28
2.452
7.62
0.300
WEIGHT: SHEET 1 OF 1
PART NUMBER: REV
DESCRIPTION:
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWISE
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL 0.01
THREE PLACE DECIMAL 0.005
NOT DRAWN TO SCALE
145.42
5.725
87.73
3.454
75.60
2.976
137.69
5.421
61.09
2.405
28.58
1.125
3.38
R0.133
44.83
1.765
115.59
4.551
134.12
5.280
7.62
0.300
WEIGHT: SHEET 1 OF 1
PART NUMBER: REV
DESCRIPTION:
NAME DATE
DRAWN BY
MATERIAL
UNLESS NOTED OTHERWISE
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL 1/64
ANGULAR: 1 deg
TWO PLACE DECIMAL 0.01
THREE PLACE DECIMAL 0.005
NOT DRAWN TO SCALE
ACCESSORIES
14
© 2022 Littelfuse, Inc. 503 Littelfuse.com/relayaccessories
Accessories
Mounting Adapters and Enclosures
RELAY TO REPLACE PANEL MOUNT NEW RELAY
AB BULLETIN 1406 PMA-14 MPS
FPL-GFRM PMA-6 SE-701/SE-704
GE S1 PMA-9 MPU-32/FPU-32
GE LODTRAK III PMA-10 MPU-32
GE MULTILIN 169, 269, or 369
PMA-13 MPS
PMA-16 MPU-32
PMA-16 FPU-32
GE MULTILIN 469 PMA-24 MPS
GE MULTILIN P4A PMA-15 MPU-32/FPU-32
GEC/MCGG PMA-3 SE-701/SE-704
GE & WESTINGHOUSE FT-11 PMA-12 MPU-32
P & B GOLDS Contact Factory FPU-32
WESTINGHOUSE CO9 & CO11 Contact Factory FPU-32
Adapter Plates
PMA SERIES
Panel Mount Adapters — Retrofits
Description
A variety of protection relay retrofit adapter plates are
available for the products listed below. These adapter plates
simplify the process of updating electromechanical or poorly
functioning existing relays. Consult factory if you have a
specific product to replace that is not featured. Adapters are
available in either plate style for panel mounting or drawout
style depending on the relay being replaced.
Motor, feeder and ground-fault protection upgrades are
available for electromechanical or solid state relays that are
nearing the end of their life.
For a complete list of the Littelfuse Panel Mount Adapter Plates please see next page.
Example of a panel mount adapter (PMA-3). Relay is for
illustrative purposes only and must be purchased separately
from adapter plate. For more information on our complete
offering of panel mount adapters see the following page.
Example Shown: PMA-3
FEATURES BENEFITS
Mounting Fits in existing mounting holes and panel openings
Multiple adapter sizes Plate style or drawout style adapters are available
to fit various outdated relays
Features & Benefits
ACCESSORIES
14
Littelfuse.com/relayaccessories 504 © 2022 Littelfuse, Inc.
Accessories
Mounting Adapters and Enclosures
Note: Relays are not included with the PMA-Series Panel Mount Adapters.
PANEL MOUNT ADAPTERS
Product Features Accessory For
PMA-2
Adapter Plate Used when replacing the AB Bulletin 1406. MPU-32
PMA-3
Adapter Plate
Used when replacing GEC/MCGG ground-fault relays.
Requires PMA-55 or PMA-60. SE-704 SE-701
PMA-4
Adapter Plate Used when replacing the Multilin 139/239. MPU-32
PMA-6
Adapter Plate
Used when replacing FPL-GFRM ground-fault relays.
Requires PMA-55 or PMA-60. SE-701
PMA-7
Adapter Plate Used when replacing the GE Lodtrak II. MPU-32
PMA-8
Adapter Plate Used when replacing an Atkinson Omser II with an SE-130-Series Monitor. SE-134C SE-135
PMA-9
Adapter Plate
Used when replacing relays in the GE S1 Case.
Requires PMA-55 or PMA-60. MPU-32 FPU-32
PMA-10
Adapter Plate Used when replacing the GE Lodtrak III. MPU-32
PMA-12
Adapter Plate Used when replacing GE and Westinghouse FT-11 relays. MPU-32
PMA-13
Adapter Plate Used when replacing the GE Multilin 169, 269, or 369. MPS
PMA-14
Adapter Plate Used for rough cutouts and when replacing the AB Bulletin 1406. MPS
PMA-15
Adapter Plate Used for rough cutouts and when replacing the GE Multilin P4A. MPU-32 FPU-32
PMA-16
Adapter Plate
PMA-16-RTDB
Mounting Bracket
The PMA-16 mounting plate is used when replacing the GE Multilin 169, 269,
and 369 relays. The PMA-16-RTDB is a mounting bracket for the optional
MPS-RTD Temperature Input Module.
MPU-32 FPU-32
PMA-17
Adapter Plate Used when replacing Sprecher & Schuh Cet 4. MPU-32
PMA-18
Adapter Plate Used when replacing Sprecher & Schuh Cet 3. MPU-32
PMA-21
Adapter Plate Used when replacing an ABB RACIF. FPU-32
PMA-23
Adapter Plate Custom mounting plate for FPU-32 to replace 3 Westinghouse C0 relays. FPU-32
PMA-24
Adapter Plate Used when replacing the GE Multilin 469. MPS
PMA-55
Adapter Plate Used to panel mount the SE-601 and SE-701. SE-601
PGR-4300
SE-701
SE-704
PMA-60
Adapter Plate Used to panel mount the relay; IP 53 and NEMA 3 rating, tamper resistant. SE-601
PGR-4300
SE-701
SE-704
MPU-32-SMK
Surface-Mount Kit Used to surface mount the MPU-32 or FPU-32. MPU-32 FPU-32
PANEL-MOUNT ADAPTERS
ACCESSORIES
14
© 2022 Littelfuse, Inc. 505 Littelfuse.com/relayaccessories
Accessories
Mounting Adapters and Enclosures
DIN RAIL & MOUNTING ADAPTERS
DIN RAIL & MOUNTING ADAPTERS
Product Features Accessory For
C103PM (Al)
DIN Rail
Industry standard 35 mm aluminum or steel DIN rail.
C103PM aluminum rail is available in a 36 in.
(91.4 cm) length.
Can be used with all DIN-rail
compatible units.
AC700-SMK
Mount Adapter
DIN-rail and Surface-mount adapter for back-plane
mounting. EL731
D0050
DIN-Rail Adapter Clip
Plastic clip allowing DIN-rail mounting of the
PGR-8800 and AF0500 Arc-Flash Relay.
AF0500
PGR-8800
P1023-20
DIN Rail Mount Adaptor
Allows any 2 x 2 in (50.8 x 50.8 mm) or 2 x 3 in
(50.8 x 76.2 mm) module to be mounted on a 35 mm
DIN type rail. Comes complete with mounting
hardware (one #10 - 24 x 1.00 screw and one
#10 - 24 x 1.25 screw) for 0.75 in (19 mm) and 1 in
(25.4 mm) thick modules.
Consult the individual datasheet to
determine part compatibility.
P0500-178
Surface Mount Adapter
P0500-178 is surface mountable with 2 Quick
Mount Fasteners.
ASXX/DSXX
Series Timers
Inches
(Millimeters)
P0500-179
DIN Rail Mount Adapter
P0500-179 snaps onto DIN rail. ASXX/DSXX
Series Timers
Inches
(Millimeters)
ACCESSORIES
14
Littelfuse.com/relayaccessories 506 © 2022 Littelfuse, Inc.
Accessories
Mounting Adapters and Enclosures
BRACKETS & CLIPS
BRACKETS & CLIPS
Product Features Accessory For
BZ1
Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8-pin or 11-pin plug-in timers, flashers,
and other controls. May be mounted in panels up to
0.125 in (3.2 mm) thick. Includes two clamps and
two screws.
Series:
ARP FS500 LLC4 LLC5 LLC6
PLM PLMU PLR PLS PRLM
TDB TDBH TDBL TDI TDIH
TDIL TDM TDMB TDMH TDML
TDR TDS TDSH TDSL TRB
TRDU TRM TRS TRU
PANEL OPENING
1.9 +/-.02
(48.3 +/-.5)
2.6 +/-.02
(66.0 +/-.5)
Inches (Millimeters) Illustrates panel opening size
required to mount BZ1.
P1023-6
P1023-7
Mounting Brackets
0.56
(14.3)
1.25
(31.8)
2.1
(53.3)
0.47
(11.9)
1.5
(38.1)
0.19
(4.8)
d
Inches (Millimeters)
Provides a convenient method of mounting modules.
The 90 ° orientation of mounting slots makes
installation/removal of modules quick and easy.
Made from steel with a cadmium surface finish.
PART
NUMBER
MOUNTING
HOLE SIZE
MOUNTING METHOD
P1023-6 0.19 in (4.8 mm) #8 (M4 x 0.7) screw
P1023-7 0.25 in (6.35 mm) Mini-Pot
Used on many 2" x 2" timers. Refer to
individual series datasheet to determine
if this accessory is compatible.
PSCRB8
Hold-down Brackets
Designed for use with P1011-6 socket. Securely
mounts 8-pin plug-in controls in any position, and
provides protection against vibration. Sold in pairs.
P1011-6
PSC8
PSC11
Hold-down Clips
Securely mounts plug in controls in any position.
Also provides protection against vibration. Select the
PSC8 for use with NDS-8, or the PSC11 for use with
NDS-11 sockets. Sold in pairs.
NDS-8 Socket NDS-11 Socket
P1023-2
P Clamp
Removable P clamp bracket for mounting MSM
series timers and FS100 and FS400 series flashers.
Timers series: MSM
Flasher series: FS100 FS400
ACCESSORIES
14
© 2022 Littelfuse, Inc. 507 Littelfuse.com/relayaccessories
Accessories
Mounting Adapters and Enclosures
ENCLOSURES & WATERTIGHT COVERS
ENCLOSURES
Product Features Accessory For
NGRM-ENC
NGR Monitor Control Panel
NEMA 4 painted steel control panel, complete with the SE-325
or SE-330, and a fused 600/480:120 V PT for relay control power.
Suitable for indoor or outdoor mounting, CSA certified. When
NGR Monitor is back-plane mounted, 22 mm NEMA 4 indicators
and reset button are included. Please contact factory for
additional information.
Littelfuse.com/ngrm-enc
SE-325
SE-330
NEMA-3R-L A
Enclosure
Metal NEMA-3R electrical box with lenses for viewing the
single-phase PumpSaver® status lights. H 6.0” x W 6.0” x D 4.0” Single-Phase PumpSaver
RM-1000-ENCL
Enclosure
Steel enclosure for protecting the RM1000 from weather and
vandalism. Protects from UV, hail, and it seals to keep rain from
contacting the RM1000 connections. The enclosure also features
a built-in padlock tab (padlock not included).
H 6.4” x W 6.3” x D 1.7”
RM1000
WATERTIGHT COVERS
Product Features Accessory For
MPU-16A-Y92A-96N
Watertight Cover Watertight cover for outdoor applications. MPU-32
FPU-32
SE-IP65CVR-G
Watertight Cover Watertight cover. Tamper-resistant. IP65 protection.
SE-134C SE-135
SE-330 SE-330AU
SE-330HV SE-400
SE-IP65CVR-M
Watertight Cover Watertight cover. Tamper-resistant. IP65 protection. MPS
FPS
SE-MRE-600
Moisture-Resistant
Enclosure Kit
Protects the connection terminals from snow and rain in
outdoor applications.
ER-600VC
ER-1000HV
ACCESSORIES
14
For full datasheet and ordering information, see pg. 67
Littelfuse.com/relayaccessories 508 © 2022 Littelfuse, Inc.
Accessories
Mounting Adapters and Enclosures
SOCKETS
SOCKETS
Product Features Accessory For
OT08PC
Octal Socket 8-Pin
8-pin 35 mm DIN-rail or surface mount octal socket. Rated at
10 A @ 600 V ac and has pressure clamp terminals.
AWG 12 to 22 (3.2 to 0.33 mm²)
wire sizes. Consult individual
datasheet for compatibility
NDS-8
Octal Socket 8-Pin
Screw terminals with
captive wire clamps
8-pin 35 mm DIN-rail or surface mount octal socket. Rated at
10 A @ 300 V ac. Surface mounted with two #6 (M 3.5 x 0.6)
screws or snaps onto a 35 mm DIN rail. A spring mechanism
allows easy removal. Uses PSC8 hold-down clips.
Up to two #14 AWG
(2.45 mm²) wire size
Series:
ARP FS500 LLC4 LLC5
PRLM TDB TDBH TDBL
TDI TDIH TDIL TDM
TDMB TDMH TDML TDR
TDS TDSH TDSL TRDU
TRM TRS TRU
P1011-6
Octal Socket 8-Pin
8-pin surface mount socket with binder head screw terminals.
Rated at 10 A @ 600 V ac. UL Listed combination when
used with TDM, TDB, TDS series timers. Uses PSCRB8
hold-down brackets.
Series:
ARP FS500 LLC4 LLC5
PRLM TDB TDM TDMB
TDR TDS TRB TRDU
TRM TRS TRU
OT11PC
Magnal Socket 11-Pin Magnal Sockets are for plug-in units
11-pin Plug-in units
Series:
ARP LLC6 TDB TDBH
TDBL TDMB TDS TDSH
TDSL TRB TRDU TRM
TRS TRU
SD12-PC
Rectangle Socket 12-pin 12-pin surface Rectangle Socket. ACBC-120
NDS-11
11-pin Magnal Socket
Screw terminals with
captive wire clamps
11 pin 35 mm DIN-rail or surface mount socket. Rated at
10 A @ 300 V ac. Surface mounted with two #6 (M 3.5 x 0.6)
screws or snaps onto a 35 mm DIN rail. A spring mechanism
allows easy removal. Uses PSC11 hold-down clips.
AWG 12 to 22
(3.2 to 0.33 mm²) wire sizes
Series:
ARP LLC6 TDB TDBH
TDBL TDMB TDS TDSH
TDSL TRB TRDU TRM
TRS TRU
ACCESSORIES
14
© 2022 Littelfuse, Inc. 509 Littelfuse.com/relayscontrols
Overview
For More Information…
and to download our
Protection Relay Overview, visit
Littelfuse.com/TechnicalCenter
OVERVIEW
Glossary of Terms............................................................................... 510
Introduction........................................................................................ 513
I. Introduction to Protection Relays............................................ 513
II. Relay Application.................................................................... 514
III. CT Application ....................................................................... 522
IV. Resistance-Grounding Conversion ........................................ 523
IEEE/ANSI Device Numbers............................................................... 526
Typical Suffixes.................................................................................. 526
PROTECTION OVERVIEW
15
Overview
Littelfuse.com/relayscontrols 510 © 2022 Littelfuse, Inc.
Glossary of Terms
Active Power–Measured in kW. In a diesel generator
application, it is the power produced by the engine.
Alarm Level–A setting on a protection relay at which an LED or
output contact operates.
Alarm Relay Contact–An output of a relay that acts as a
switch and is typically connected to a visual or audible alarm.
Analog Output–A discrete, continually variable 0-1 mA,
4-20 mA, or 0-5 Vdc signal from a protection relay used to pass
information to a device or controller.
Apparent Power–The vector sum of the active and
reactive power.
Arc Flash Hazard–A dangerous condition associated with the
possible release of energy caused by an electric arc.
Arc Flash Risk Assessment–A study investigating a worker’s
potential exposure to arc flash energy, conducted for the purpose
of injury prevention and to determine safe work practices, arc
flash boundary, and the necessary types of personal protective
equipment (PPE).
Arc Flash Suit–A complete arc-rated clothing and equipment
system covering the entire body, except for hands and feet.
Arc Flash Boundary–When an arc flash hazard exists, the
boundary is an approach limit at a distance from a prospective arc
source within which a person could receive a second degree burn
if an electrical arc flash were to occur.
Arc Rating–The value attributed to materials that describes their
performance to exposure to an electrical arc discharge. The arc
rating is expressed in cal/cm2 and is derived from the determined
value of the arc thermal performance value (ATPV) or energy of
break open threshold (EBT) (Should a material system exhibit
a break open response below the ATPV value). Arc rating is
reported as either ATPV or EBT, whichever is the lower value.ˆ
Asynchronous Motor–A motor in which the speed of the
rotor is not the same as the connected system frequency.
Charging Current–System charging current is the current that
will flow into the grounding connection when one phase of an
ungrounded system is faulted to ground. Although not physically
connected to ground, electrical conductors and the windings of all
components are capacitively connected to ground. Consequently,
a small current will flow to ground from each phase. This current
does not occur at any particular location; rather, it is distributed
throughout the system just as the capacitance to ground is
distributed throughout the system.
Conformal Coating–A Silicone coating used to protect circuit
boards from pollutants, corrosion, mildew, etc.
Core-Balance Current Transformer–See Earth-Fault
Current Transformer.
Current Transformer (CT)–A transformer that produces a
current in its secondary circuit in a known proportion to current in
its primary circuit.
CT Verification–A continuous check of CT continuity to
verify connection.
CT Saturation–A condition that occurs when a CT cannot
maintain a secondary current proportional to a relatively large
primary current.
CT Local Saturation–A condition where the magnetic flux is
not evenly distributed throughout the CT. A resulting secondary
current could be induced when no ground fault is present; it may
lead to the false operation of a protective relay. This could occur if
conductors are not centered in a CT window.
CT Saturation Compensation–A feature in which a
protective relay can recognize that a CT is saturated and
compensate for the condition in order to maintain service.
Data Logging–Collecting and storing information in a format
that can be reviewed for trending, troubleshooting, and reporting.
De-energized–Free from any electrical connection to a source
of potential difference and from electrical charge; not having a
potential different from that of the earth.
DFT–See Discrete Fourier Transform.
Differential Module–An accessory for the MPU-32 Motor
Protection Relay and MPS Motor Protection System to add phasedifferential protection.
Digital Harmonic Filter–The use of digital signal-processing
techniques such as a discrete Fourier Transform to eliminate the
measurement of harmonic components. With regard to groundfault detection, this allows for a setting below the background
noise level.
Discrete Fourier Transform–A mathematical algorithm used
to extract a single frequency, such as the fundamental frequency,
from a signal.
Earth Leakage–See Leakage Current.
Earth-Fault Current Transformer–A current transformer
used to measure low-level ground-fault current.
Electrical Hazard–A dangerous condition such that contact
or equipment failure can result in electric shock, arc flash burn,
thermal burn, or blast.
Electrical Safety–Recognizing hazards associated with the
use of electrical energy and taking precautions so hazards do not
cause injury or death.
Electrically Safe Work Condition–An electrical conductor
or circuit part has been disconnected from energized parts,
locked/tagged in accordance with established standards, tested
to ensure the absence of voltage, and grounded if determined
necessary.
Fail-Safe Mode (also known as Undervoltage or UV)–
An output relay is energized during normal (not tripped) operation.
If the protection relay loses supply voltage, the system will trip or
alarm. (Also see Non-Fail-Safe.)
Fault Current–A current that flows when a phase conductor is
faulted to another phase or ground.
Feeder–All circuit conductors between the service equipment
or other power-supply source and the load or branch-circuit
overcurrent device.
PROTECTION OVERVIEW
15
© 2022 Littelfuse, Inc. 511 Littelfuse.com/relayscontrols
Overview
Glossary of Terms
Feeder Protection–Overcurrent or overvoltage devices
installed on a feeder circuit to interrupt the supply in the event of
a fault.
Flux Conditioner–A ring of magnetically permeable material
inserted in an earth-fault current transformer window; used to
reduce local saturation.
Fundamental Frequency–In an alternating-current power
system, the frequency of the generated voltage. In North America
this is typically 60 Hz (60 cycles per second).
Ground Check Conductor–An insulated conductor in a
trailing cable used to assist in monitoring continuity of the ground
conductor. Typically designed to be the smallest conductor,
it is the first to break connection when cable couplers are
disconnected.
Ground-Check Loop–A circuit that includes a ground-check
conductor, a ground-check termination device, and a ground
conductor.
Ground-Check Termination–A device installed at the load
end of a ground-check loop.
Ground-Continuity Monitor–A protection relay that
continuously monitors a ground-check loop and trips if the loop
opens or shorts.
Ground Fault–An unintentional contact between a phase
conductor and ground or equipment frame. The words “ground”
and “earth” are used interchangeably.
Ground-Fault Current–A current that returns to the supply
neutral through a ground-fault and ground-return path.
Ground-Fault Current Transformer–See Earth-Fault
Current Transformer.
Ground-Fault Relay–A protection relay designed to detect
a phase-to-ground fault on a system and trip or alarm when the
condition exceeds its pickup setting for longer than its time delay.
Ground-Fault Protection–The use of a ground-fault relay
or indication system in order to interrupt the supply or alarm
personnel in the event of a ground fault.
Ground Reference Module–A resistor network that limits
ground-fault current and provides a system reference for a DC
ground-fault relay.
Harmonic Filter–A device or method to remove or ignore
non-fundamental frequency components of a signal.
Harmonic Frequency–Harmonic-frequency components
(voltage and current) are multiples of the fundamental frequency
and, in a power system, can be considered noise. Harmonicfrequency components are often present with the use of
adjustable-speed drives.
High-Resistance Grounding–Using a neutral-grounding
resistor to limit the current to a low level. Typically, HighResistance Grounding limits ground-fault current to 25 A or lower.
(Also see Low-Resistance Grounding.)
High Tension Coupler–An accessory used to isolate system
voltage from a protective relay.
I
2t (I squared t)–Thermal capacity, or used thermal capacity.
With regard to motor protection, thermal capacity is used to
measure and describe motor heating in terms of current (I). This
method is more accurate than temperature sensing because of
temperature-sensor placement and the time delay inherent in
temperature measurement.
IEEE Device Numbers–The devices in switching equipment
are referred to by numbers, according to the functions they
perform. These numbers are based on a system which has been
adopted as standard for automatic switchgear by the IEEE. This
numbering system is used on connection diagrams, in instruction
literature, and in specifications.
Incident Energy–The amount of energy impressed on a
surface, a certain distance from the source, generated during an
electrical arc event. One of the units used to measure incident
energy is calories per centimeter squared (cal/cm2).
Incident Energy Analysis–Used to predict the incident
energy of an arc flash for a specified set of conditions.
Insulation Monitoring–Monitoring the resistance from phase
to ground to detect insulation breakdown on a system.
Insulation Resistance–A measurement of the ability of an
insulator, such as a cable jacket, to prevent current flow when
a voltage is applied; typically measured in megaohms (MΩ).
Insulation resistance change can be monitored to predict failure.
Inverse-Time Overcurrent Protection–A method by
which time-to-trip of a protective device, such as an overcurrent
or ground-fault relay, decreases as the magnitude of the fault
increases.
Leakage Current–Low-level ground-fault current, typically
measured in milliamperes (mA).
Low-Resistance Grounding–A Resistance-Grounding
System that allows high currents to flow during a ground fault.
Typically, 100 A and higher is considered Low-Resistance
Grounding. (Also see High-Resistance Grounding.)
LSIG Protection–An acronym for Long-time, Short-time,
Instantaneous overcurrent, and Ground-fault protection; a term
often used to describe protection required for a power-distribution
feeder, or a protection relay with these functions.
Motor Protection–Technology designed to ensure that a
motor operates within its rated thermal capacity in order to
maximize its service life.
Neutral-Grounding Resistor (NGR)–A current-limiting
resistor connecting the power-system neutral to ground.
N.C. Contact (Normally Closed Contact)–A relay contact
that is closed when the relay is not energized.
N.O. Contact (Normally Open Contact)–A relay contact
that is open when the relay is not energized.
Non-Fail-Safe Mode (also known as Shunt Trip or SH)–
An output relay is energized and contacts change state when
a trip occurs. If the protective device loses supply voltage, the
system can continue to operate but will not be protected. (Also
see Fail-Safe Mode.)
PROTECTION OVERVIEW
15
Overview
Littelfuse.com/relayscontrols 512 © 2022 Littelfuse, Inc.
Non-Volatile Memory–Data is retained when power
is removed.
Nuisance Trip–A false operation of a protective relay.
Phase Current–Current present in a phase conductor.
Phase-Current Transformer–A current transformer installed
so that current from one phase conductor flows in its primary
winding. With regard to motor protection, feeder protection, and
metering in a three-phase system, three current transformers are
typically used to measure phase currents.
Phase-Differential Protection–Protection designed to
detect low-level winding-to-winding and winding-to-ground
failures in an AC motor.
Phase Voltage–The voltage measured between a phase
conductor and ground, or another phase.
Power factor (cosφ)–The relation between the active power
[kW] and apparent power [kVA].
Primary Rating (for CTs)–The current rating of the primary
side of a current transformer. For example, the first number in the
ratio 500:5 is the primary rating. 500 A of primary current flowing
through the CT will produce 5 A of current out of the secondary
terminals.
Pulsing Ground-Fault Systems–Modulating the groundfault current on a resistance-grounded system using a contactor
to short out part of the NGR elements (or to open one of two
NGRs connected in parallel). This technique is used to locate
ground faults by tracing the pulsing ground-fault current to the
source of the fault.
Online or Offline Monitoring–Monitoring system
parameters such as insulation integrity when the system is
energized or de-energized, respectively.
Open-CT Hazard–An open-circuited CT secondary which
can develop a dangerously high voltage when primary current
is present.
Reactive Power–Measured in kVAR. The power used
for magnetization of asynchronous alternators, motors and
transformers, coils etc. The amount of reactive power has no
effect on the torque of the prime mover (e.g. diesel engine).
Therefore the reactive power has no effect on the engine. It is
however very important for the alternator, as the total load on
he alternator is the vector sum of active and reactive load.
Relay (1)–An electrical switch that opens and closes a contact
(or contacts) under the control of another circuit. Typically an
electromagnet.
Relay (2)–A device that receives inputs, compares them to set
points, and provides outputs based upon that comparison.
Relay Operating Mode–Method of operation used for
undervoltage or shunt-trip breakers. (Also see Fail-Safe Mode,
Non-Fail-Safe Mode.)
Resistance-Grounded System–An electrical system in
which the transformer or generator neutral is connected to
ground through a current-limiting resistor. (Also see Solidly
Grounded System, Ungrounded System.)
Reverse Power–An active power [kW] fed into a generator that
thus is working as an electric motor, turning the prime mover. As
this would damage the prime mover (e.g. an internal combustion
engine), reverse power relays are used in applications where
generators run in parallel with each other or with the utility. These
relays detect the amount and direction of the power, and in case
of excessive reverse power, disconnect the generator breaker.
Ride-Through Time–The amount of time a protection relay
can maintain operation during a supply voltage loss.
RTD (Resistance Temperature Detector)–A device
that experiences a linear change in resistance with a change
in temperature. It is used to provide temperature metering.
Common RTDs are 100 Ω platinum, 100 Ω nickel, 120 Ω nickel,
and 10 Ω copper.
Sensitive Ground-Fault Protection–Protection designed to
accurately detect low-level ground-fault current.
Shock Hazard–A dangerous condition associated with possible
release of energy caused by contact or approach to energized
electrical conductors or circuit parts.
Solidly Grounded System–An electrical system in which the
neutral point of a wye-connected supply transformer is connected
directly to ground. (Also see Resistance-Grounded System,
Ungrounded System.)
Switchgear, Arc-Resistant–Equipment designed to
withstand the effects of an internal arcing fault and that directs
the internally released energy away from the employee.
Time Delay–A setting on a protection relay that determines the
time between the fault detection and relay operation.
Trailing Cable–A power cable used to supply electrical
power to mobile equipment. They typically contain three phase
conductors, two ground conductors, and a pilot wire (also known
as a ground-check conductor).
Trip Level–A setting on a protection relay at which an LED or
output contact operates.
Trip Relay Contact–An output of a relay that acts as a switch
and is typically connected to an undervoltage-release or shunt-trip
coil of a circuit breaker.
Trip State–The state of the output contact during a relay trip.
True RMS–“Root-Mean-Square” calculation used to derive an
average current or voltage value in a waveform.
Ungrounded System–An electrical system in which no
point of the system is intentionally grounded, such as a deltaconnected supply transformer.
Zero-Sequence Current Transformer–See Earth-Fault
Current Transformer.
Glossary of Terms
PROTECTION OVERVIEW
15
© 2022 Littelfuse, Inc. 513 Littelfuse.com/relayscontrols
Overview
Introduction
I. INTRO TO PROTECTION RELAYS
What is a protection relay?
g Inputs and Settings
g Processes
g Outputs
How do protection relays solve electrical problems?
g Stage 1 – Early stages of a failure
g Stage 2 – During a failure
g Stage 3 – After a failure
II. RELAY APPLICATION
Ground-Fault Protection
g Definition of Ground Fault
g DC Systems
g Ungrounded AC Systems
g Solidly Grounded Systems
g Resistance-Grounded Systems
g System Capacitive Charging Current
g Resistor Monitors
g Ground-Continuity Monitors
Motor Protection
g Overview
g Common Motor Problems and Solutions
g Motor Protection and the NEC®
Arc-Flash Protection
g Overview
g Arc-Flash Safety Standards
g Arc-Flash Mitigation
g Arc-Flash Relays
g Selection Criteria
III. CT APPLICATION
g Current Transformers
g Lead Length
g CT Installation
IV. RESISTANCE GROUNDING CONVERSION
I. INTRODUCTION TO PROTECTION RELAYS
What is a Protection Relay?
A protection relay is a smart device that receives inputs,
compares them to set points, and provides outputs. Inputs can
include current, voltage, resistance, or temperature. Outputs can
include visual feedback in the form of indicator lights and/or an
alphanumeric display, communications, control warnings, alarms,
and turning power off and on. A diagram is shown below.
CURRENT
VOLTAGE
INSULATION
TEMPERATURE
VISUAL
INDICATION
WARNING
ALARM
COMMUNICATIONS
REMOVE
POWER
PROTECTION
RELAY PICK-UP LEVELS
TIME
INPUTS
OUTPUTS
SETTINGS
FIGURE 1
Protection relays can be either electromechanical or
electronic/microprocessor-based. Electromechanical relays
consist of mechanical parts that require routine calibration
to stay within intended tolerances. Microprocessor-based
or electronic relays provide quick, reliable, accurate, and
repeatable outputs. Using an electronic or microprocessorbased relay instead of an electromechanical design provides
numerous advantages including improved accuracy, additional
functions, reduced maintenance, smaller space requirements
and lower life-cycle costs.
Inputs
A relay needs information from the system to make a
decision. These inputs can be collected in a variety of ways.
In some cases, the wires in the field can be connected
directly to the relay. In other applications, additional devices
are needed to convert the measured parameters to a format
that the relay can process. These additional devices can be
current transformers, potential transformers, high-tension
couplers, RTDs, or other devices.
Settings
Many protection relays have adjustable settings. The user
selects settings (pick-up levels) that allow the relay to make a
decision. The relay compares the inputs to these settings and
responds accordingly.
Processes
Once the inputs are connected and the settings are made,
the relay compares these values and makes a decision.
Depending on the need, different types of relays are available
for different functions.
PROTECTION OVERVIEW
15
Overview
Littelfuse.com/relayscontrols 514 © 2022 Littelfuse, Inc.
Ground-Fault Protection
Outputs
A relay can have several ways of communicating that a
decision has been made. Typically the relay will operate a
switch (relay contact) to indicate that an input has surpassed
a setting, or the relay can provide notification through visual
feedback such as a meter or LED. One advantage of many
electronic or microprocessor-based relays is an ability to
communicate with a network or a PLC.
As an example, a thermostat can be evaluated using
the diagram in Figure 1. The input that is measured is
temperature and the input device is the temperature sensor.
The user sets the desired temperature setting (pick-up
level). The relay measures the existing air temperature and
compares it to the setting. The outputs can be used to
provide controls (turning an air conditioner or furnace on and
off) and visual indication on the thermostat display.
How Do Protection Relays Solve
Electrical Problems?
Similar to how the thermostat solves the problem of
automating the control of the air conditioner or furnace in
a home, protection relays can solve electrical problems.
The purpose of the protection relay is to detect a problem,
ideally during its initial stage, and to either eliminate or
significantly reduce damage to personnel and/or equipment.
The following stages illustrate how an electrical problem
develops:
Stage 1: When conductors with good insulation are
exposed to fault initiators such as moisture, dust, chemicals,
persistent overloading, vibration or just normal wear, the
insulation will slowly deteriorate. Such small changes will not
be immediately obvious until the damage is severe enough to
cause an electrical fault. Relays can detect that a problem is
developing by identifying slight deviations in current, voltage,
resistance, or temperature. Due to the small magnitude
in change, only a sophisticated device such as a sensitive
protection relay or a monitor can detect these conditions and
indicate that a problem may be developing, before any further
damage occurs.
Stage 2: As the problem becomes more severe, further
changes take place such as insulation breakdown,
overheating, or overvoltage. Since the change from
normal to abnormal is great, traditional devices can be
used to interrupt power. Protection relays can also be
used to provide additional protection by detecting the fault
contributors (overheating, overvoltage, etc.) not possible
with fuses and circuit breakers.
Stage 3: At this point, the problem has occurred and caused
damage. Different types of protection relays and monitors
can reduce or eliminate damage because they detect
problems in advance of traditional devices.
As an example, if a facility is continually resetting circuit
breakers, replacing fuses, or repairing equipment and cannot
locate the problem, they may be experiencing overcurrents. If
this is the case, the user can install a protection relay that has
an overcurrent feature. The relay measures the current (input)
and allows the user to program limits (settings). The settings
typically are more sensitive than the fuses or circuit breakers.
Once these limits are exceeded, the relay will operate an
internal switch (relay contacts). The user has the option to
use the switch to turn on a light (alarm indication) or remove
power (trip) before greater problems occur. The user can use
the alarm indication to help identify the faulty equipment prior
to the traditional fuse or circuit breaker clearing the fault.
II. RELAY APPLICATION
Ground-Fault Protection
The primary purpose of grounding electrical systems is
to provide protection against electrical faults. However,
this was not common practice until the 1970’s. Until then,
most commercial and industrial systems were ungrounded.
Although ungrounded systems do not cause significant
damage during the first ground fault, the numerous
disadvantages associated with ground faults resulted in
a change to the grounding philosophy. There are other
advantages for a grounded system, such as reduction of
shock hazards and protection against lightning.
Electrical faults can be divided into two categories: phase-tophase faults and ground faults. Studies have shown that 98%
of all electrical faults are ground faults (Source: Woodham,
Jack, P.E. “ The Basics of Grounding Systems” May 1,
2003 ). While fuses can protect
against phase-to-phase faults, additional protection, such as
protection relays, are typically required to protect against
ground faults.
Definition of Ground Fault
A ground fault is an inadvertent contact between an energized
conductor and ground or the equipment frame. The return
path of the fault current is through the grounding system
and any equipment or personnel that becomes part of that
system. Ground faults are frequently the result of insulation
breakdown. It’s important to note that damp, wet, and
dusty environments require extra diligence in design and
maintenance. Since contaminated water is conductive, it
exposes degradation of insulation and increases the potential
for hazards to develop.
Table 1 shows the leading initiators of electrical faults.
LEADING INITIATORS OF FAULTS % OF ALL FAULTS
Exposure to moisture 22.5%
Shorting by tools, rodents, etc. 18.0%
Exposure to dust 14.5%
Other mechanical damage 12.1%
Exposure to chemicals 9.0%
Normal deterioration from age 7.0%
TABLE 1
PROTECTION OVERVIEW
15
© 2022 Littelfuse, Inc. 515 Littelfuse.com/relayscontrols
Overview
Ground-Fault Protection
RECEPTACLE
WHITE
120 V
15 A
l FAULT
BLACK
GREEN
TOASTER
FIGURE 2
As an example, in the toaster circuit above, the black or hot
wire is shorted to the metal casing of the toaster. When the
circuit closes, all or part of the current is channeled through
the toaster frame and then through the green ground wire.
When sufficient current flows (typically 6 x 15 A = 90 A), the
circuit breaker will open. A protection relay could be installed
to detect currents as low as 10 mA, which would open the
circuit breaker at a significantly lower level, hence, much
quicker than the traditional circuit breaker.
Although the example above shows a solidly grounded
single-phase circuit, the philosophy is the same on threephase circuits discussed later. Relays and monitors are
specifically designed to look for the leading initiators shown
in Table 1 by detecting low-level changes in current, voltage,
resistance or temperature.
DC Systems
Direct current (DC) systems have positive and negative
buses. If either bus is intentionally grounded, then it is
referred to as a grounded system. If neither bus is grounded,
then it is referred to as an ungrounded DC system. A ground
fault on a DC system may cause damage to the source as
well as in the field.
If the system is ungrounded, then it is possible to use a
ground-fault relay by installing a ground-reference module
between the two buses to establish a neutral point (see
Figure 3). The ground-fault relay uses this neutral point as a
reference to detect low-level ground faults.
GROUND REFERENCE MODULE
L1
L2
FIGURE 3
Ungrounded AC Systems
Ungrounded AC systems, as shown in Figure 4, were used
where continuity of power was critical. For example, chemical
plants or refineries involving processes that cannot be
interrupted without extensive dollar or product loss may have
an ungrounded system. However, experience has proven
that these systems are problematic and are being replaced
with resistance grounded systems. Two major problems with
ungrounded systems are transient overvoltages and difficulty
locating ground faults.
PHASE C
DISTRIBUTED
SYSTEM
CAPACITANCE
PHASE A
PHASE B
FIGURE 4
g An ungrounded system has no point in the system that is
intentionally grounded (other than the normal bonding which
is always present to connect the non-current-carrying metal
parts to ground). Grounding occurs only through system
capacitance to ground (as shown in Figure 4).
g Continuity of operation occurs because the system can
operate with one phase faulted to ground.
g An intermittent or arcing fault can produce high transient
overvoltages to ground. These voltages are impressed
on the phase conductors throughout the system until
the insulation at the weakest point breaks down. This
breakdown can occur at any point in the electrical system,
causing a phase-to-ground-to-phase fault.
g Although a ground fault can be detected or alarmed on the
system, it is difficult to determine the location of the fault.
There are two methods used to detect ground faults on
ungrounded systems. One method is to monitor the voltages
between the phases and ground. As a ground fault develops,
the faulted phase will collapse to ground potential, causing
an indicator light to dim. The indicator lights on the unfaulted
phases become brighter.
A second method to detect a ground fault is to measure
the insulation resistance. As the insulation deteriorates, a
relay continuously monitoring the insulation resistance can
alarm at different levels for predictive maintenance. A visual
indicator or meter can also be used.
PROTECTION OVERVIEW
15
Overview
Littelfuse.com/relayscontrols 516 © 2022 Littelfuse, Inc.
Ground-Fault Protection
Solidly Grounded Systems
Due to the problem of ungrounded systems, a shift in
philosophy occurred and designs moved from ungrounded
to grounded systems. In most cases, the type of grounding
system chosen was solidly grounded. A solidly grounded
system is a system of conductors in which at least one
conductor or point is intentionally grounded (usually the neutral
point of transformer or generator windings). The problem
with the direct connection is that ground-fault current can be
excessive, causing Arc-Flash hazards, extensive equipment
damage, and possible injury to personnel. A solidly grounded
system cannot continue to operate with a ground fault.
NEUTRAL
PHASE C
PHASE A
PHASE B
GROUND
FIGURE 5
g In a solidly grounded system, the wye point (or neutral) of
the power source is connected solidly to ground and offers
a very stable system that maintains a fixed phase-to-ground
voltage.
g The high ground-fault current is easy to detect with fuses,
circuit breakers, or protection relays, allowing for selective
tripping (tripping the faulted feeder and not the main feeder).
g When a ground fault occurs, high point-of-fault damage can
quickly result since the energy available to the ground fault
is only limited by the system impedance (which is typically
very low).
g Due to excessive ground-fault current and Arc-Flash
Hazards, the faulted feeder must be removed from service.
This does not allow for continuous operation during a
ground fault.
Figure 6 illustrates an example of the dangers associated
with solidly grounded systems. In this example, a ground
fault occurs and the overcurrent protection is set at 600 A.
ARCING
FAULT
EQUIPMENT FRAME
OR BARE COPPER
600 A / 3 P
FIGURE 6
Assume that this ground-fault is not a bolted fault, but an
arcing fault due to an insulation breakdown or a partial
reduction of clearances between the line and ground.
g Because of the arc resistance, fault current may be as low
as 38% of the bolted-fault level. This can be in the range of
a normal load or a slight overload.
g The fault current may be low enough that the overcurrent
device (600-A circuit breaker) does not sense a fault, or may
pick it up but not trip for a long time.
g The energy being supplied by the source is concentrated
at the arc and could cause severe equipment damage very
quickly. This energy release could cause a fire that in turn,
could damage the premises and present an extreme hazard
to personnel.
Aside from converting this solidly grounded system to
resistance grounding, the best way to prevent damage is
to detect low-level ground leakage prior to it becoming a
ground fault. In order to accomplish this, the protection relay
must be able to sense a low-level ground leakage without
nuisance tripping.
In modern facilities, equipment often generates noise or
harmonics that can interfere with a protection relay’s ability
to function properly. For example, the noise or harmonics
may be higher than the desired ground-fault relay settings,
causing the relay to falsely operate when there is no fault on
the system. The protection relay must be able to filter out
noise or harmonics to provide reliable protection.
Resistance-Grounded Systems
Resistance grounding solves the problems commonly
associated with both ungrounded systems and solidly
grounded systems. The name is derived from the addition
of a resistor between the system neutral and ground (as
shown in Figure 7). The specifications of the resistor are userdetermined to achieve a desired ground-fault current, which
must be greater than the system capacitive charging current
(explained later in this section).
NEUTRAL
GROUND
PHASE C
PHASE A
PHASE B
FIGURE 7
PROTECTION OVERVIEW
15
© 2022 Littelfuse, Inc. 517 Littelfuse.com/relayscontrols
Overview
Ground-Fault Protection
g Transient overvoltages can be eliminated by correctly sizing
the neutral-grounding resistor (NGR) to provide an adequate
discharge path for the system capacitance.
g Continuity of operation with one ground fault is typically
allowable when ground-fault current is <− 10 A.
g The NGR limits the available ground-fault current. This
eliminates or minimizes point-of-fault damage (Arc-Flash
Hazards) and controls the ground-fault voltage.
g Pulsing current can be used to locate ground faults when
ground-fault current is <−10 A. Pulsing current is created by
using a shorting contactor to short out half of the resistance,
causing the ground-fault current to double (usually one cycle
per second). A hand-held zero-sequence meter is used to
detect the fluctuating ground-fault current, and locate the
ground fault.
g The only disadvantage of resistance grounding is that if the
resistor fails, the system will become ungrounded. Resistor
monitoring is recommended to protect against this.
A protection relay for resistance-grounded systems is used
to detect a ground fault and to monitor the neutral-to-ground
connection. It can be used to provide alarms or to trip the
feeder from service upon the detection of a ground fault.
The relay can provide a pulsing circuit that can be used to
locate the ground fault. The relay can also alarm or trip if the
neutral-to-ground path fails. For systems 5 kV and less, highresistance grounding can be used. High-resistance grounding
typically limits the resistor current to 10 A or less. By doing
so, the ground fault can remain on the system, given that the
system is rated for the voltage shift.
For systems above 5 kV, neutral-grounding resistors are
typically rated for 25 A or more, and ground-fault current is
cleared within 10 s.
System Capacitive Charging Current
Although not physically connected to ground, electrical
conductors and the windings of all components are
capacitively connected to ground. Consequently, a small
current will flow to ground from each phase. This current
does not occur at any particular location; rather, it is
distributed throughout the system just as the capacitance
to ground is distributed throughout the system. For analysis,
it is convenient to consider the distributed capacitance as
lumped capacitance, as shown in Figures 5, 6, 7, and 8.
lC
xC
IA + IB + IC = 0 xC xC
lA
lB
A
FIGURE 8
Even if the distributed capacitance is not balanced, the
ammeter will read zero because all the current flowing
through the CT window must return through the CT window.
System charging current is the current that will flow into the
grounding connection when one phase of an ungrounded
system is faulted to ground (see Figure 9). It can be
measured as shown below if appropriate precautions are
taken:
g If the fault occurs on the supply side of the CT, the sum
of the currents in the CT window is not zero.
g Ammeter A will read the sum of the capacitive currents in
the unfaulted phases. This value is the charging current of all
the equipment on the load side of the CT.
lC
xC
IA + IB + IC = 0 xC xC
lA
lB
A
x
FIGURE 9
A single-line diagram of a three-feeder, resistance-grounded
system with a fault on feeder 3 is shown in Figure 10.
g A CT (A1 and A2) on unfaulted feeders will detect the
charging current of that feeder.
g A CT (A3) on a faulted feeder will detect the sum of the
resistor current (IR) and the charging currents (I1
+I2
) of the
unfaulted feeders.
A1
A2
A3
1
2
3
l
1
l
2
l
R
FIGURE 10
PROTECTION OVERVIEW
15
Overview
Littelfuse.com/relayscontrols 518 © 2022 Littelfuse, Inc.
Selective coordination in a resistance-grounded system can
be achieved if the pick-up setting of each ground-fault relay is
greater than the charging current of the feeder it is protecting.
If the pick-up setting of a ground-fault relay is less than the
charging current of the feeder it is protecting, it will trip when
a ground fault occurs elsewhere in the system. This is known
as sympathetic tripping.Sympathetic tripping can be avoided
by choosing a relay pickup setting larger than the charging
current from the largest feeder. If the relative size of the
feeders can change, or if the advantage of using one operating
value for all ground-fault relays in a system is recognized,
then it is prudent to select a pick-up setting for all ground-fault
relays that is larger than the system charging current.
In order to eliminate transient overvoltages associated with
an ungrounded system, it is necessary to use a grounding
resistor with a let-through current equal to or larger than the
system charging current.
What is the minimum acceptable NGR current? Select a pickup setting for the ground-fault relays that exceeds the largest
feeder charging current and multiply the operating value by
an acceptable tripping ratio. Use the greater of this value or
system charging current and select the next-largest available
standard let-through current rating.
Resistor Monitors
As discussed in the resistance-grounded systems section, a
failure in the neutral-to-ground path will lead to a dangerous
situation. Some examples of failure are stolen wires, loose
connections, corrosion, and broken resistor elements. The
resistor monitor continuously monitors the path from system
neutral to ground for a problem. When a problem occurs, the
monitor provides an alarm.
Ground-Continuity Monitors
Ground-check monitors are used to detect problems in
equipment ground conductors. The cable powering mobile
equipment typically has an extra wire, or pilot wire, routed
with the phase conductors. A monitor uses this pilot wire to
send a signal to a terminating device in the equipment, where
the signal is sent back on the cable ground conductor to the
monitor. The monitor continuously monitors this loop for open
or short circuits, indicating that a problem has occurred. The
monitor provides an alarm for this condition.
As an example, portable loads are grounded via single or
multiple conductors in a trailing cable. A ground fault on a
portable load will cause fault current to flow through the
ground conductors and all other ground-return paths. A
hazardous touch voltage can develop when the ground
conductor opens and a ground fault develops, assuming there
is not enough current to trip a ground-fault relay. If the portable
equipment has rubber tires or is not in good contact with
earth, then a person who touches the equipment under fault
conditions will become part of the ground-return path.
Motor Protection
Overview
Motors are a significant investment and often run critical
processes. Motor protection relays are used to protect the
windings from damage due to electrical faults and thermal
overloads. Adequate motor protection not only prevents
motor damage, but also ensures optimal process efficiency
and minimal interruption. Cost recovery for protection is
achieved by extending the life of the motor, preventing motor
rewinds and reducing downtime.
Common Motor Problems
Overload and Overtemperature
Insulation breakdown is a common reason for motor failure.
Windings in the motor are insulated with organic materials
including epoxy and paper. Insulation degradation occurs
when winding temperature exceeds its rating. The National
Electrical Manufacturers Association (NEMA) states that the
time-to-failure of organic insulation is halved for each 8 to
10°C rise above the motor insulation-class rating. This point is
illustrated in Figure 11.
Solution: An I2
t Thermal Model provides thermal-overload
protection of motor windings during all phases of operation. By
integrating the square of the current over time, a thermal model
can predict motor temperature and react much quicker than
embedded temperature devices. A thermal model takes into
consideration the motor service factor, full-load current and class.
A dynamic thermal model adjusts the time-to-trip depending on
how much motor thermal capacity has been used. Figure 12
illustrates the adjustment in trip time for different current levels at
different levels of used thermal capacity (I2
t).
A dynamic thermal model allows accurate protection of a
motor and allows operations to get the maximum work out
of a motor without sacrificing available life. If the motor is
hot (high % used thermal capacity) it will trip more rapidly
during an overload than if the motor is cold (0% used thermal
capacity). In the event of a stall condition, when available
motor torque is lower than the torque required by the load,
the motor can be de-energized before it overheats.
Many old-technology electronic thermal overloads do not
take into consideration the values of load current below
the full-load current (FLA) pick-up value. Modern overload
relays should model currents above and below the FLA
pick-up current to achieve maximum output of the motor and
maximum life of insulation.
On larger induction motors, blockage or loss of ventilation
can cause motor hot spots that current-based protection
cannot detect without the use of temperature sensors.
Resistance temperature detectors (RTDs) are inexpensive
devices installed between the stator windings during
manufacturing and may be included on motor-end bearings.
Motor Protection
PROTECTION OVERVIEW
15
© 2022 Littelfuse, Inc. 519 Littelfuse.com/relayscontrols
Overview
An RTD has a linear change in resistance over its rated
temperature range. Using information from an RTD, motorprotection relays can provide protection for loss-of-ventilation,
loss-of-cooling, or high-ambient-temperature.
The RTD temperature reading can also be used as an input
to the thermal model to improve protection. When hotmotor compensation is enabled, the maximum stator-RTD
temperature is used to bias the thermal model by increasing
used I2
t when the RTD temperature is greater than the
thermal-model temperature.
Overcurrent, Jam and Undercurrent
Overcurrent faults, also referred to as short circuits, can
cause catastrophic motor failures and fires. Overcurrents can
be caused by phase-to-phase, phase-to-ground, and phase-toground-to-phase faults.
A mechanical jam, such as a failed bearing or load, can cause
stalling and locked-rotor current to be drawn by the motor,
resulting in overheating.
Undercurrent protection is loss-of-load protection and is
required by some codes as a safety measure. A water pump
that cavitates can be dangerous. The water typically provides
pump cooling. Without the cooling water, case temperature
can reach an extremely high value. If valves are opened under
these conditions and cold water is allowed to reach red-hot
metal parts, the resulting steam pressures can destroy the
pump and pose a serious personnel hazard.
Solution: A multifunction motor protection relay has multiple
trip and alarm settings for current protection. Overcurrent
protection is typically set above locked rotor current and has
a minimal delay time. Overcurrent protection may be used to
trip a breaker instead of a starter due to the high fault levels.
Jam protection is set below overcurrent and has a slightly
longer delay time. Jam protection prevents motor heating
that would otherwise lead to an overload trip. Jam protection
is enabled after the motor is running to avoid tripping on
starting current. Undercurrent is set below full-load current to
detect loss of load.
Under and Overvoltage
Overvoltages cause insulation stress and premature
breakdown. Undervoltages, such as those caused by
brownouts, can lead to increased motor heating. Torque
developed by an electric motor changes as the square of the
applied voltage. A 10% reduction in voltage results in a 19%
reduction in torque. If the motor load is not reduced, the
motor will be overloaded.
Solution: Under and overvoltage protection are features
found in higher-end motor protection relays. Voltage
protection can be used pro-actively to inhibit a start.
Ground Faults
Ground faults are the most common fault and can lead to more
serious problems. Ground-fault protection, described elsewhere
in this text, is an important consideration in motor loads.
Solution: The motor protection relay should be able to
detect low-level ground-fault current when used on a
resistance-grounded system.
HOTTEST TEMPERATURE (°C)
CLASS F
100,000
1
50,000
10,000
— 10
— 7
— 5
— 1
— 2
— 5
— 1
— 20
— 10
— 5
— 3
— 2
— 1
5000
1000
500
100
100
110
120
130
140
150
160
180
200
220
240
260
280
300
50
10
5
AVERAGE MOTOR LIFE (HOURS)
(YEARS) (MONTHS) (DAYS)
FIGURE 11
MOTOR CURRENT (%FLA)
0 100 200 300 400 500 600 700 800 900 1000
) SDNOCES( PI RT- OT- E IMT
1
2
3
4
5
6
8
10
20
30
40
50
60
80
100
200
300
400
500
600
800
1000
2000
3000
4000
5000
6000
8000
10000
1100 1200 1300 1400 1500 0.1
0.2
0.3
0.4
0.5
0.6
0.8
SHOWN AT 1.15
SERVICE FACTOR 1.00 TO 1.25
2
TIME-TO-TRIP DECREASES
AS USED I t INCREASES
0% USED I t (cold) 2
25% USED I t 2
75% USED I t 2
50% USED I t 2
FIGURE 12
Motor Protection
PROTECTION OVERVIEW
15
Overview
Littelfuse.com/relayscontrols 520 © 2022 Littelfuse, Inc.
High-Resistance Winding Faults
Winding-to-winding and winding-to-ground failures inside the
motor are difficult to detect using the phase and ground-fault
CTs due to low magnitudes of current.
Solution: Differential protection in high-end motor protection
relays use multiple CTs to compare the current entering and
leaving the winding. If there is a difference in currents then
leakage is occurring. This sensitive protection is used on very
large or critical motors.
Current and Voltage Imbalance, Phase Loss,
Phase Reverse
Older motor protection devices did not consider current
imbalance and today it is often overlooked. Imbalance
increases negative-sequence current which causes additional
rotor heating.
Phase loss is also referred to as single phasing. When a
phase loss occurs, negative-sequence current is equal to the
positive-sequence current and imbalance is 100%. In this
condition, one motor winding attempts to do the work of
three, inevitably leading to overheating.
Phase reversal causes the negative-sequence current and
voltage to be greater than the positive-sequence current
and voltage. Voltage-based protection is advantageous to
prevent a start with incorrect sequence. In some applications
attempting to spin the motor backwards will result in damage
to the load. An example of this is certain impeller designs in
downhole pumps.
Solution: Modern motor protection relays use digital
signal analysis to measure true-sequence components.
These sequence components are used for thermal model
calculations and take the extra heating into consideration.
Voltage imbalance which drives current imbalance can be
used as a start inhibit. Sequence components are also used
for calculating imbalance, phase loss and phase reversal.
Motor Jogging
NEMA-designed motors are rated for two starts from cold and
one start from hot per hour. Motor jogging refers to excessive
starts and can cause overheating. The motor may not get up
to full speed and the forced air cooling is not effective.
Solution: Since the thermal model accurately tracks the
motor’s used thermal capacity at all times, including during
starts and between starts, the starts-per-hour feature may
not be required.
It is included for compatibility with protection relays that do
not have dynamic thermal-modeling capability.
Motor Protection and the NEC
The NEC® requires the motor to be protected by overload
devices against excessive heating due to overload and failure
to start (Article 430 Section III). Article 430, Section IV also
specifies the use of devices to protect against overcurrents
such as short circuits and grounds. Both of these NEC®
requirements and many additional functions can be met with
the use of a multifunction motor protection relay.
Article 430.32 (A)(4) requires the use of a protection device
having embedded temperature detectors that cause current
to the motor to be interrupted when the motor attains a
temperature rise greater than marked on the nameplate in an
ambient temperature of 40°C for motors larger than 1500 hp.
The NEC defines minimum requirements and is intended to
provide protection from fire. Protection relays can provide
many enhancements above simple fire protection.
Communications
Network communications can be added to a motor protection
relay to allow remote metering of currents, voltages and
temperatures. Data logging is a useful feature for troubleshooting
and comparing event sequences with process stages. Analysis of
information can often show operational issues.
Arc-Flash Protection
The Consequences of Arc Flash
Arcing and arc flashes are uncontrolled, intense, luminous
discharges of electrical energy that occur when electric
current flows across what is normally an insulating medium.
The most common cause of arc faults is insulation failure.
These failures may be caused by defective or aging insulation
material, poor or incorrect maintenance, dust, moisture,
vermin, and human error (touching a test probe to the wrong
surface or a tool slipping and touching live conductors).
Arc-Flash events are dangerous, and potentially fatal, to
personnel. According to OSHA, industrial Arc-Flash events
cause about 80% of electrically-related accidents and fatalities
among qualified electrical workers. Even if personnel injuries
are avoided, Arc Flash can destroy equipment, resulting in
costly replacement and downtime.
Arc-Flash Safety Standards
NFPA 70E, Handbook for Electrical Safety in the Workplace.
outlines the practices and standards that companies should
follow to protect workers and equipment from Arc Flash
and other electrical hazards. It specifies practices designed
to make sure that an electrically safe work condition exists.
In Canada, CSA Z462, Workplace electrical safety, specifies
safe workplace practices. There are also various provincial
regulations pertaining to electrical safety.
The NFPA 70E and the CSA Z462 hold both employers
and their employees responsible for creating a workplace
for electrical workers that is not just safe but puts in place
the best possible processes and procedures that are fully
understood, practiced and enforced for optimal results. Using
Arc-Flash relays is one way to protect the functional reliability
of the distribution board and at the same time comply with
the requirements of NFPA 70E and CSA Z462.
Arc-Flash Protection
PROTECTION OVERVIEW
15
© 2022 Littelfuse, Inc. 521 Littelfuse.com/relayscontrols
Overview
Arc-Flash Protection
Arc-Flash Mitigation
NFPA 70E goes into great detail on procedures to avoid electrical
shock and Arc-Flash events. Sometimes, though, it’s necessary to
work on live circuits. For these cases, NPFA 70E specifies approach
distances and use of personal protection equipment (PPE).
Current limiting fuses or current-limiting circuit breakers help
protect against arc flashes. They allow only a certain amount
of energy to pass before they open a circuit. Because an Arc
Flash can draw a fraction of bolted-fault current, circuit breakers
cannot be relied upon to distinguish between the arcing current
and a typical inrush current.
High-resistance grounding (HRG) is another technique for
protecting against arc flashes. If a phase faults to ground, then the
resistance limits current to just a few amps; not enough to cause
downtime by tripping the overcurrent protection device, and not
enough to allow an Arc Flash. It is important to remember that
while resistance grounding prevents Arc Flash from phase-toground shorts, it has no effect on phase-to-phase shorts.
Another way to mitigate the dangers of arc flashing is by
redesigning the switchgear. Switchgear cabinets can be
designed to contain and channel energy away from personnel
during an Arc Flash.
Arc-Flash relays
Arc-Flash relays are microprocessor-based devices that use
optical sensors to detect the onset of a flash. The sensors are
strategically placed in various cubicles or drawers inside the
switchboard.
Installing an Arc-Flash relay to rapidly detect developing arc
flashes greatly reduces the total clearing time and the amount
of energy released through an arcing fault. In turn, there is less
damage to equipment and fewer and less severe injuries to
nearby personnel.
Arc-Flash Relay Selection Criteria
When selecting an Arc-Flash relay, there are six important criteria:
1. Reaction time
2. Trip reliability
3. Avoidance of nuisance tripping
4. Sensor design and installation
5. Ease of use
Reaction Time
Since light is the earliest detectable indication that an Arc Flash is
occurring, Arc-Flash relays use optical light sensors to detect the
arc that is forming. The output of the light sensor is hard-wired to
the Arc-Flash relay, which trips a circuit that interrupts the energy
supply in the Arc.
The response time of an Arc-Flash relay is approximately
1-5 ms at light intensities of about 10,000 lux or higher. Within
that time frame, the optical sensor output can actuate a switch
or circuit breaker to cut off current feeding the arc. The overall
current clearing time depends on the protection strategy used and
the performance of the external switch or circuit breaker used.
The breaker will typically take an additional 35-50 ms to open,
depending on the type of breaker and how well it is maintained.
The electronic output to turn on is a function of the type of output
relay used. Solid-state outputs (for example, insulated gate bipolar
transistors (IGBTs)) are much faster than electromechanical relays
and can operate within 200 microseconds.
Trip Reliability
Reliable tripping is the most important characteristic of an ArcFlash relay, because this ensures mitigation of an arcing fault.
Two aspects of reliability should be considered: trip redundancy
and system-health monitoring.
Redundant Tripping. Arc-Flash relays should offer a redundant
tripping feature, which means it has both primary and secondary
trip path logic. The primary path is controlled by the internal
microprocessor and its embedded software, and works by
activating the coil of the primary trip relay.
The redundant path typically uses a discrete solid-state device
that does not go through the microprocessor. Any failure
in the primary (microprocessor) path will cause the unit to
automatically switch to its redundant path, which activates a
shunt-trip relay without delay when a sensor input is above the
light detection threshold.
An often overlooked advantage of a solid-state trip path
compared to a microprocessor-based circuit is the reaction time
when the relay is first powered up. Wiring mistakes, tools left
in hazardous locations, and the regular stresses of powering
up all contribute to the risk of an Arc Flash on power up. A
microprocessor can require 200 ms or more before it is able to
start scanning the optical sensors. However, a solid-state trip
path can detect an Arc and send a trip signal in as little as 2 ms.
In addition, there are fail- safe features that alert operators when,
for example, the microprocessor fails.
Health monitoring. Health monitoring makes sure the system
is in good operating condition and should extend from the light
sensors to the output of the Arc-Flash relay trip circuitry. Health
monitoring starts on the sensors. A signal is sent from the relay
to the light sensors, where a test light is detected by the sensor
and sent back to the relay. In the case of a fiber-optic sensor, this
also verifies the entire length of the fiber is not pinched or broken.
On-sensor health indication is critical in preventing maintenance
work on equipment where protection is not working. It also has
the added benefit of providing rapid fault location.
Following the path of a trip signal from the sensor, internal
monitoring must also include the primary and redundant trip
circuit. Low voltage across the IGBT indicates a wiring fault or
an error in the trip coil, and a high voltage is a sign of an error in
the IGBT switch, both of which are also reported and logged.
The IGBT is also thermally protected against overloads, and will
turn off if it overheats. However, the thermal protection has a
100 ms delay before acting, meaning that even a dangerously
overheated coil will attempt to signal a trip before resuming
thermal protection.
PROTECTION OVERVIEW
15
Overview
Littelfuse.com/relayscontrols 522 © 2022 Littelfuse, Inc.
CT Application
III. CT APPLICATION
Current Transformers (CTs)
A current transformer is defined as a transformer that
produces a current in its secondary circuit that is in
proportion to current in its primary circuit.
Although there are other types of CTs, only the window (or
ring) type will be discussed here. Window-type CTs get their
name from their design that consists of a ring-shaped core.
This core is formed by a single length of strip ferromagnetic
material tightly wound to form the ring-shaped core.
A CT operates on a principle of flux balance, as shown
in Figure 1. If the primary winding is energized with the
secondary circuit open-circuited, the transformer becomes
an iron-cored inductor. The primary current generates a
magnetic flux in the core as shown (flux direction can be
determined by the right-hand rule). When the secondary
winding is connected to a burden or is short circuited, current
flows through the secondary winding creating magnetic flux
in the core in opposition to the magnetizing flux created by
the primary current. If losses are ignored, the secondary flux
balances exactly to the primary flux. This phenomenon is
known as Lenz’s Law.
SECONDARY FLUX
SECONDARY
WINDING
PRIMARY
WINDING
T2
T1 PRIMARY FLUX
FIGURE 1
Lead Length
The secondary lead resistance of CTs cannot be ignored,
particularly with low Volt-Amperes (VA) CTs. For example,
let’s look at an electronic overload relay.
The relay’s CT input impedance or burden (ZB) = 0.01 Ω
The maximum current (I) = 10 A
The CT rating (P) = 5 VA
Now let’s solve for the maximum length of #14 AWG leads
that will result in a rated accuracy for a 10 A secondary
current. Solving for maximum total impedance (ZT
):
P = I²ZT
ZT
= P / I² = 5 / 10² = 0.05 Ω
Avoidance of Nuisance Tripping
A typical Arc-Flash Relay system has an integrated three-phase
current measurement function that detects and reacts to
short circuit and overcurrent conditions. Although this is not a
requirement for the system to operate, this option will increase
the reliability of the system (minimize unwanted tripping).
If the microprocessor logic receives an input from a light sensor,
it checks for a rapidly rising input from the current transformers.
Two conditions need to be fulfilled before the trip is sent to the
circuit breaker: a certain current flow that exceeds the normal
operating current of the system (the threshold level is adjustable
from 10-1000% of the full load current) and a signal from the
arc-flash sensor, implying that the sensor has reacted to a highintensity light source.
Sensor Design and Installation
Arc-Flash relay installations utilize multiple fixed-point light
sensors near vertical and horizontal bus bars where arcing
faults are apt to occur in
feeder switchgear cabinets.
Sufficient numbers of
sensors should be installed
to cover all accessible areas,
even if policy is to only work
on de-energized systems.
At least one sensor should
have visibility to an arc fault
if a person blocks another
sensor’s field of view. Light
sensors may also be installed
in other electrical cabinets
and on panels that are
subject to routine maintenance and repairs.
A fiber-optic sensor, which have a 360° field of view for detecting
light, allows more flexible positioning of the light sensing
locations, as the fiber-optic strands can be looped throughout an
enclosure or panel to cover challenging component layouts.
Easy to Use Hardware and Software
Another important factor to consider is ease of use. Some relays
may require field assembly, calibration, or advanced configuration
before installing. It is critical to consider those extra steps and the
capabilities of the operators who will be using the devices. Often,
very complicated devices can be misused because of incorrect
setup or configuration,
which can defeat the
purpose of the device
altogether. A few Arc-Flash
Relays have
software that
provides event
logging. To make
troubleshooting
easier, this
software should
record the
specific sensor
that initiated the
fault in the data
records.
PGA-LS10
(Point Sensor)
PGA-LS20/
PGA-LS25
(Fiber-Optic Sensor)
24 Vdc Battery
Backup
(Optional)
(Recommended)
(Arc-Flash Protection Relay)
PGR-8800
CTs
5-A-SECONDARY PHASE CT’s
L2
L1
A
B
C
Examples of Arc-Flash
Relay light sensor
installation in switchgear.
PROTECTION OVERVIEW
15
© 2022 Littelfuse, Inc. 523 Littelfuse.com/relayscontrols
Overview
IV. RESISTANCE-GROUNDING CONVERSION
Convert Ungrounded to Resistance-Grounded
Systems
Resistance grounding protects a system against transient
overvoltages caused by intermittent ground faults and
it provides a method to locate ground faults. (Transient
overvoltages and inability to locate ground faults are the most
common safety issues with ungrounded systems.)
Conversion of delta-connected or wye-connected sources
with inaccessible neutrals require a zigzag transformer to
derive an accessible neutral for connection to a neutral
grounding resistor (NGR). The neutral is only used for the
NGR and not for distribution. During normal operation
the only current that flows in the zigzag transformer is an
extremely small magnetizing current. When one phase is
grounded, the NGR and the zigzag transformer provide a path
for ground-fault current to flow.
Figure 1
Design Note 1: A zigzag conversion requires a three-phase
connection to the existing power system, typically at the
main transformer or switchgear. See Figure 1.
Design Note 2: The resistor let-through current must be
greater than the system capacitive charging current
(see Section I).
Design Note 3: Protection, coordination, and annunciation
systems depend on the integrity of the NGR. NGR monitoring
with an SE-330 or SE-325 is recommended.
Converting to a Resistance-Grounded System
Solving for the maximum lead resistance (Z W):
ZT
= Z W+Z B
Z W= 0.05-0.01 = 0.04 Ω
If we look up the #14 AWG resistance we find it equals
2.6 ohms/1000 ft
Therefore, lead length = Z W / #14 AWG resistance
Maximum lead length= (0.04 x 1000) / 2.6 = 15.4 ft
CT Installation
A CT should not be operated with its secondary opencircuited. If the secondary is opened when primary current is
flowing, the secondary current will attempt to continue to flow
so as to maintain the flux balance. As the secondary circuit
impedance increases from a low value to a high value the
voltage across the secondary winding will rise to the voltage
required to maintain current flow. If the secondary voltage
reaches the breakdown voltage of the secondary winding, the
insulation will fail and the CT will be damaged. Furthermore,
this situation presents a personnel shock hazard.
When a ring-type CT is used to monitor a single conductor or
multiple conductors, the conductors should be centered in
the CT window, as shown below in Figure 2, and should be
perpendicular to the CT opening.
In some applications it is difficult or impossible to install the
primary conductor through the CT window (example: existing
bus bar structure). For these applications a split core CT is
sometimes used. Performance of split core CTs may be less
than that of solid core CTs.
A
A
B
B
C C
A
B C
SPACER
Incorrect Correct
FIGURE 2
CT characteristics are normally specified at a single frequency
such as 50 or 60 Hz. Therefore the question arises: What
happens when CTs are used with variable frequency
drives (VFDs)? For CTs that are linear to approximately
10x rated primary current at 60 Hz, the Volts/Hertz ratio
is approximately constant. That is, for all other conditions
held the same at 6 Hz, the CT will be linear to only 1x rated
current and at 30 Hz the CT will be linear to 5x rated current.
For a standard silicon-steel-core CT, the upper bandwidth
frequency is approximately 5 kHz.
PROTECTION OVERVIEW
15
Overview
Littelfuse.com/relayscontrols 524 © 2022 Littelfuse, Inc.
Ungrounded, Solidly Grounded and Resistance-Grounded Systems
UNGROUNDED SYSTEM
PHASE C
DISTRIBUTED
SYSTEM
CAPACITANCE
PHASE A
PHASE B
NEUTRAL
PHASE C
PHASE A
PHASE B
GROUND
NEUTRAL
GROUND
PHASE C
PHASE A
PHASE B
Advantages
• Operation possible with one faulted phase
Disadvantages
• Ground faults are difficult to locate
• Transient overvoltages damage equipment
SOLIDLY GROUNDED SYSTEM
Advantages
• Eliminates transient overvoltages
• Selective tripping possible
Disadvantages
• Costly point-of-fault damage
• Cannot operate with a ground fault
• Ground-fault Arc-Flash hazard
• Increased Arc-Flash risk
RESISTANCE-GROUNDED SYSTEM
Advantages
• Reduced point-of-fault damage and Arc-Flash risk
• Eliminates transient overvoltages
• Simplifies ground-fault location
• Continuous operation with a ground fault
• Selective tripping possible
• No ground-fault Arc-Flash hazard
Disadvantages
• Failure of the neutral-grounding resistor renders currentsensing ground-fault protection inoperative
PROTECTION OVERVIEW
15
© 2022 Littelfuse, Inc. 525 Littelfuse.com/relayscontrols
Overview
Convert Solidly Grounded to
Resistance-Grounded Systems
Resistance grounding protects a system against Arc-Flash
Hazards caused by ground faults and provides a method for
continuous operation or an orderly shutdown procedure.
(Ground faults are estimated to be 98% of all electrical faults.)
Since the neutral point of the power source is available, the
solid connection between neutral and ground is replaced with
a grounding resistor. This resistor limits ground fault current
to a predetermined value, typically 5 A for 480 V systems (the
system capacitive charging current is usually less than 3 A).
By limiting the ground-fault current to 5 A or less, there are no
Arc-Flash Hazards associated with ground faults. This allows for
continuous operation during the first ground fault.
During a ground fault on a resistance-grounded (RG) system,
a voltage shift occurs (the same shift experienced on
ungrounded systems). The faulted phase collapses to ~0 V,
the non-faulted phases rise to line-to-line voltage with respect
to ground, and the neutral point rises to line-to-neutral voltage
with respect to ground.
Figure 2
Design Note 1: An NGR conversion for a solidly grounded
system requires a neutral connection to the existing power
system, typically at the main transformer or switchgear. See
Figure 2.
Design Note 2: The voltage shift requires equipment to be
fully rated at line-to-line voltage with respect to ground. This may
require TVSSs, VFDs, meters, etc. to be reconfigured or replaced.
Design Note 3: The voltage shift also restricts neutral
distribution. The neutral typically cannot be distributed due to its
potential rise during ground faults. Single-phase line-to-neutralvoltage loads must be served by a 1:1 isolation transformer or
converted to line-to-line loads.
Design Note 4: The resistor let-through current must be greater
than the system capacitive charging current (see Section I).
Design Note 5: Protection, coordination, and annunciation
systems depend on the integrity of the NGR. Monitoring with
an SE-330 or SE-325 NGR Monitor is recommended.
Ungrounded, Solidly Grounded and Resistance-Grounded Systems
PROTECTION OVERVIEW
15
Overview
Littelfuse.com/relayscontrols 526 © 2022 Littelfuse, Inc.
IEEE DEVICE NUMBERS
1 - Master Element
2 - Time Delay Starting or Closing Relay
3 - Checking or Interlocking Relay
4 - Master Contactor
5 - Stopping Device
6 - Starting Circuit Breaker
7 - Rate of Change Relay
8 - Control Power Disconnecting Device
9 - Reversing Device
10 - Unit Sequence Switch
11 - Multi-function Device
12 - Overspeed Device
13 - Synchronous-speed Device
14 - Underspeed Device
15 - Speed - or Frequency, Matching Device
16 - Data Communications Device
17 - Shunting or Discharge Switch
18 - Accelerating or Decelerating Device
19 - Starting to Running Transition Contactor
20 - Electrically Operated Valve
21 - Distance Relay
22 - Equalizer Circuit Breaker
23 - Temperature Control Device
24 - Volts Per Hertz Relay
25 - Synchronizing or Synchronism-Check Device
26 - Apparatus Thermal Device
27 - Undervoltage Relay
28 - Flame Detector
29 - Isolating Contactor or Switch
30 - Annunciator Relay
31 - Separate Excitation Device
32 - Directional Power Relay
33 - Position Switch
34 - Master Sequence Device
35 - Brush-Operating or Slip-Ring
Short-Circuiting Device
36 - Polarity or Polarizing Voltage Devices
37 - Undercurrent or Underpower Relay
38 - Bearing Protective Device
39 - Mechanical Condition Monitor
40 - Field (over/under excitation) Relay
41 - Field Circuit Breaker
42 - Running Circuit Breaker
43 - Manual Transfer or Selector Device
44 - Unit Sequence Starting Relay
45 - Abnormal Atmospheric Condition Monitor
46 - Reverse-phase or Phase-Balance Current Relay
47 - Phase-Sequence or Phase-Balance Voltage Relay
48 - Incomplete Sequence Relay
49 - Machine or Transformer, Thermal Relay
50 - Instantaneous Overcurrent Relay
51 - AC Inverse Time Overcurrent Relay
52 - AC Circuit Breaker
53 - Exciter or DC Generator Relay
54 - Turning Gear Engaging Device
55 - Power Factor Relay
56 - Field Application Relay
57 - Short-Circuiting or Grounding (Earthing) Device
58 - Rectification Failure Relay
59 - Overvoltage Relay
60 - Voltage or Current Balance Relay
61 - Density Switch or Sensor
62 - Time-Delay Stopping or Opening Relay
63 - Pressure Switch
64 - Ground (Earth) Detector Relay
65 - Governor
66 - Notching or Jogging Device
67 - AC Directional Overcurrent Relay
68 - Blocking or “Out-of-Step” Relay
69 - Permissive Control Device
70 - Rheostat
71 - Liquid Level Switch
72 - DC Circuit Breaker
73 - Load-Resistor Contactor
74 - Alarm Relay
75 - Position Changing Mechanism
76 - DC Overcurrent Relay
77 - Telemetering Device
78 - Phase-Angle Measuring Relay
79 - AC Reclosing Relay
80 - Flow Switch
81 - Frequency Relay
82 - DC Reclosing Relay
83 - Automatic Selective Control or Transfer Relay
84 - Operating Mechanism
85 - Communications, Carrier or Pilot-Wire Relay
86 - Lockout Relay
87 - Differential Protective Relay
88 - Auxiliary Motor or Motor Generator
89 - Line Switch
90 - Regulating Device
91 - Voltage Directional Relay
92 - Voltage and Power Directional Relay
93 - Field Changing Contactor
94 - Tripping or Trip-Free Relay
ANSI DEVICE NUMBERS
AFD - Arc Flash Detector
CLK - Clock or Timing Source
DDR - Dynamic Disturbance Recorder
DFR - Digital Fault Recorder
ENV - Environmental Data
HIZ - High Impedance Fault Detector
HMI - Human Machine Interface
HST - Historian
LGC - Scheme Logic
MET - Substation Metering
PDC - Phasor Data Concentrator
PMU - Phasor Measurement Unit
PQM - Power Quality Monitor
RIO - Remote Input/Output Device
RTU - Remote Terminal Unit/Data Concentrator
SER - Sequence of Events Recorder
TCM - Trip Circuit Monitor
SOTF - Switch On To Fault
TYPICAL SUFFIXES
A - Alarm/Auxiliary Power
AC - Alternating Current
B - Battery/Blower/Bus
BT - Bus Tie
C - Capacitor/Condenser/Compensator/
Carrier Current/Case/Compressor
DC - Direct Current
E - Exciter
F - Feeder/Field/Filament/ Filter/Fan
G - Generator/Ground*
M - Motor/Metering
N - Network/Neutral*
P - Pump/Phase Comparison
R - Reactor/Rectifier/Room
S - Synchronizing/Secondary/Stainer/Sump/
Suction (Valve)
T - Transformer/Thyratron
TH - Transformer (High-voltage Side)
TL - Transformer (Low-voltage Side)
TT - Transformer (Tertiary-voltage Side)
U - Unit
Note: Descriptions per IEEE Std C37.2-1996
*Suffix N is preferred when the device is connected in the residual of a polyphase circuit, is connected across broken delta, or is internally derived from the polyphase current or voltage quantities. The
suffix G is preferred where the measured quantity is in the path of ground or, in the case of ground fault detectors, is the current flowing to ground.
IEEE/ANSI Device Numbers and Typical Suffixes
PROTECTION OVERVIEW
15
© 2022 Littelfuse, Inc. 527 Littelfuse.com/relayscontrols
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters)
Figure 1
Figure 3
Figure 2
601; 601-CS-D-P1; 777; 777-ACCUPOWER; 777-KW/HP-P2; 77C; 77C-KW/HP
RS485MS-2W; COM 4-20
3.000
[76.2] 2.300
[58.42]
1.00
[25.4]
4.760
[120.904]
2.628
[66.75]
3.750
[95.25] 0.635
[16.129] 0.700
[17.78]
0.350
[8.89]
0.294
[7.47]
0.569
[14.45]
0.680
[17.27]
0.159
[4.038]
0.415
[10.54]
0.274
[6.96]
2.456
[62.38]
2.882
[73.20]
0.830
[21.08]
DEPLUGGABLE
TERMINAL BLOCKS
®
REMOTE
RESET
ETHERNET
10Base-T
MODBUS
OVERLOAD COMM. STATUS
R R C I1 I2 I3 I4 1 2 3 4 5
CIO-EN ETHERNET Communication and I/O
PILOT DUTY RATING
480VA @ 240VAC, B300
5A @ 240VAC
GENERAL PURPOSE
SCREW TORQUE RATING 0.5 Nm (5 in.-lbs.)
DIGITAL
INPUTS
OUTPUT A OUTPUT B
IND. CONT. EQ.
LISTED
784X
E68520
REV. 00
Series B
3.000
[76.2]
inches [millimeters]
3.100
[78.74]
3.850
[97.79]
3.600
[91.44]
2.280
[57.91]
3.050
[77.47]
1.200
[30.48]
3.850
[97.79]
3.600
[91.44]
2.650
[67.31]
D. 0.650
[16.51]
0.200
[5.08]
OPTIONAL LOOP HOLES
A MAIN CONDUCTORPASS HOLES B C
inches [millimeters]
4.700
[119.38]
5.050
[128.27]
2.08
[52.83]
2.900
[73.66]
2.16
[54.86]
0.77
[19.56]
inches [millimeters]
CIO-120-DN-P; CIO-DN-P; CIO-EN; CIO-MB;
CIO-120-MB; CIO-777-PR
APPENDIX – DIMENSIONAL DRAWINGS
16
Littelfuse.com/relayscontrols 528 © 2022 Littelfuse, Inc.
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters)
1.02
5.97 [25.98]
[151.51]
6.37
[161.67]
0.99
[25.15]
#6 MOUNTING SCREWS
PROVIDED
PANEL
0.062 - 0.100 THICK
[1.574 - 2.54]
3.5
[88.9]
0.75
[19.05]
inches [millimeters]
Figure 4
Figure 5
RM2000
inches [millimeters]
4.544
[115.417]
3.619
[91.922]
1.425
[36.195] 0.9
[22.86]
0.75
[19.05]
2.5
[63.5]
RM1000
APPENDIX – DIMENSIONAL DRAWINGS
16
© 2022 Littelfuse, Inc. 529 Littelfuse.com/relayscontrols
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters)
BOTTOM
2.375
[60.331]
1.75
[44.45]
SIDE
3.15
[80.01]
0.5
[12.7]
inches [millimeters]
Figure 8
ACBC-120; ALT; ALT-XXX-X-SW; ISS-101; PC-XXX-LLC; 201-100-SLD; 201A;
201A-AU; 201A-9; 201-XXX-SP; 201-XXX-DPDT; 201-XXX-SP-DPDT
Figure 6 Figure 7
4.50
114.3
5.27
133.9
2.93
74.4
0.38
9.5
1.47
37.2
inches [millimeters]
Max
2.95
[74.9]
Typ.
0.15
[3.8]
2.17
Typ.
55
inches [millimeters]
102A; 250A; 350; 355; 455; 50R; 50R-400-ALT; CP5; T10
202; 202-200-SP
1.427
[36.245]
2.663
[67.64]
1.0
[25.4]
inches [millimeters]
2.663
[67.64]
0.25 dia.
mounting hole
for mounting
screw
0.25 dia.
indentation for
anti-rotation screw
1.427
[36.245]
2.663
[67.64]
1.0
[25.4]
inches [millimeters]
2.663
[67.64]
0.25 dia.
mounting hole
for mounting
screw
0.25 dia.
indentation for
anti-rotation screw
APPENDIX – DIMENSIONAL DRAWINGS
16
Littelfuse.com/relayscontrols 530 © 2022 Littelfuse, Inc.
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters)
Figure 9 Figure 10
Figure 11
Informer; Informer-MS
AF0100
460; 460-15-100-XXX; 460-XXX-SP; ISS-100; ISS-102; PC-102
5.025in
127.64mm
3.526in
89.56m
m
0.203in
5.16mm
3.750in
95.25mm
3.015in
76.58m
m
2.356in
59.84m
m
1.391in
35.33m
m
APPENDIX – DIMENSIONAL DRAWINGS
16
© 2022 Littelfuse, Inc. 531 Littelfuse.com/relayscontrols
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters)
111P / 233P / 235P DIMENSIONS
4.03" (102.36)
5.25" (133.35)
4.50" (114.30)
0.375"
(9.53)
2.90"
(73.66)
2.163(54.94111P / 233P / 235P DIMENSIONS
4.03" (102.36)
5.25" (133.35)
4.50" (114.30)
0.375"
(9.53)
2.90"
(73.66)
2.163"
(54.94)
2.913"
(73.99)
Figure 12 Figure 13
Figure 15
Figure 14
111P; 233P; 233P-1.5; 235P
0.192
[0.488]
3.511
[89.179]
2.350
[59.690]
3.750
[89.18]
0.621
[15.773]
5.025 [127.365]
inches [millimeters] ISS-105; PC-105
1.78
45.1
0.72
18.2
2.50
63.4
0.20
5.1
SIDE VIEW
2.25
57.2
1.13
28.6
2.70
68.5
CL
TOP VIEW
LED STATUS
INDICATOR
C'BORE
FOR #8
SCREW
inches [millimeters]
LSRX; LSRX-C
3.12
[79.25]
3.56
[90.43]
1.67
[42.42]
1.07
[27.18]
2.30
[58.42]
inches [millimeters]
0.725
[18.415]
LSR-0; LSR-XXX; LSRU
APPENDIX – DIMENSIONAL DRAWINGS
16
Littelfuse.com/relayscontrols 532 © 2022 Littelfuse, Inc.
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters)
HSPZA22SL
TRDU TRU
ASQU; ASTU;
DSQU; DSTU
(snap for
mounting
bases)
ERD3425A; ERDI; ERDM
3.5
(88.9)
2.94
(74.7)
0.8
(20.3)
1.70
(43.2)
0.25
(6.35)
1.94 (49.3)
2.50 (63.5)
0.187
(4.75)
ORB; ORM; ORS
0.50
(12.7)
1.50
(38.1)
1.50
(38.1)
2.12
(53.8)
3.69 (93.7)
3.00 (76.2)
0.163 (4.14)
0.25 (6.35)
1.88
(47.8)
0.38 (9.7)
CT; ESD52233; ESDR; FS100 (medium power); FS200;
FS300; KRD3; KRD9; KRDB; KRDI; KRDM; KRDR;
KRDS; KRPD; KRPS; KSD1; KSD2; KSD3; KSDB;
KSDR; KSDS; KSDU; KSPD; KSPS; KSPU; KVM;
T2D120A15M; TA; TAC1; TDU; TDUB; TDUI; TDUS;
TL; TMV8000; TS1; TS2; TS441165; TS6; TSA141300;
TSB; TSD1; TSD2; TSD3411S; TSD6; TSD7;
TSD94110SB; TSDB; TSDR; TSDS; TSS; TSU2000
HLVA6I23; HRDB; HRDI; HRDM; HRDR;
HRDS; HRIS; HRPS; HRV; RS
FA; FS; FSU1000*; PHS*; PTHF4900DK*; SIR1;
SIR2; SLR1*; TH1; THC; TCR9C; THD1B410.5S;
THD2; THD3C42A0; THD7; THDB; THDS; THS
PLM; PLR; TDB; TDBH; TDBL; TDI; TDIH; TDIL; TDM;
TDMB; TDMH; TDML; TDR; TDS; TDSH; TDSL
FS500; PRLM; TRB; TRM; TRS
1.5
(38.1)
0.5
(12.7)
0.94
(23.88)
0.19
(4.83)
1.0
(25.4)
“P” clamp
(P1023-2)
FS100 (low current flasher); FS491
Figure 16 Figure 17 Figure 18
Figure 19 Figure 20 Figure 21
Figure 22
Figure 25
Figure 23 Figure 24
Figure 26 Figure 27
*If unit is rated @ 1A, see Figure 16
APPENDIX – DIMENSIONAL DRAWINGS
16
© 2022 Littelfuse, Inc. 533 Littelfuse.com/relayscontrols
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters) Measurements: inches (millimeters)
SC3; SC4
2.5
(63.5)
1.94
(49.3)
0.80
(20.32) 0.25
(6.35)
0.187 (4.75) DIA.
3.5 (88.9)
2.94 (74.7)
1.22
(31)
WVM
0.25
(6.35)
0.55
(13.97)
5.9
(149.9)
6.9
(175.3)
0.50
(12.7)
3.3
(83.8)
4.4
(111.8)
2.4
(61.0)
0.68 (17.27)
2.2 (55.9)
DLMU
FB9L; HLMU; SCR9L
PLMU11
LLC4; LLC6; PLS
TCS; TCSA
2.0
(50.8)
2.0
(50.8)
1.75
(44.5)
0.75
(19.05)
0.25 (6.35) DIA. 0.36 (9.14) DIA.
Figure 28 Figure 29 Figure 30
Figure 31 Figure 32
Figure 33 Figure 34 Figure 35
Figure 36
LCS10T12
Figure 37 Figure 38
ECS; ECSW
3.5
(88.9)
0.36
(9.14) 0.187
(4.75)
0.25
(6.35)
2.94
(74.7)
0.80
(20.3)
1.75 (44.5)
1.94 (49.3)
2.5 (63.5)
(ECS has spade connectors and ECSW has terminal board)
DCSA
LPM
CURRENT LIMITING
RESISTOR
12 ± 1
(304.8 ± 25.4)
STRIPPED 0.25 (6.35)
0.53
(13.46)
0.28
(7.11)
0.22
(5.59) UL1007
24 AWG (0.25 mm2 ) <_
APPENDIX – DIMENSIONAL DRAWINGS
16
Littelfuse.com/relayscontrols 534 © 2022 Littelfuse, Inc.
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters)
KEY
MODEL NUMBERS ENDING IN:
N C
W 0.440” (11.176 mm) 0.250” (6.350 mm)
X 3.620” (91.948 mm) 3.500” (88.900 mm)
Y 2.120” (53.848 mm) 2.500” (63.500 mm)
Z 0.190” (4.826 mm) 0.250” (6.350 mm)
TVM; TVW
LLC8
LLC2
4.0
(101.6)
0.5
(12.7) 2.0
(50.8)
0.163 (4.14)
3.0
(76.2) 0.44
(11.35)
0.25
(6.35)
3.62
(91.9) 3.5
(88.9)
2.12
(53.8)
2.5
(63.5)
0.19
(4.83) 0.25
(6.35)
LLC5
[ ]
[ ] [ ]
[ ]
ARP
FB; SCR
0.80
(20.3)
1.75
(44.5)
0.36
(9.1)
3.5
(88.9)
2.94
(74.7)
0.187
(4.75)
0.28 (7.1)
1.94 (49.3) 0.28 (7.1)
2.5 (63.5)
PCR
Figure 39 Figure 40 Figure 41
Figure 42
Figure 43 Figure 44
Figure 46 Figure 47
1.5
(38.1)
0.94
(23.88)
1.0
(25.4)
0.19
(4.83)
0.5
(12.7)
2.10
(53.3)
0.94
(23.88)
0.5
(12.7)
14AWG
0.065 (1.65)
“P” clamp
(P1023-2)
1.5
(38.1)
0.94
(23.88)
1.0
(25.4)
0.19
(4.83)
0.5
(12.7)
2.10
(53.3)
0.94
(23.88)
0.5
(12.7)
14AWG 0.065 (1.65)
“P” clamp
(P1023-2)
MSM
Figure 45
= Nylon Standoffs
2.08
(52.8)
3.5
(88.9)
0.234
(5.94)
2.0
(50.8)
2.07
(52.6)
0.25
(6.35) 0.50
(12.7)
0.163 (4.14)
2.75
(69.9)
0.285
(7.24)
0.94
(23.9)
0.22 (5.59)
LLC1
APPENDIX – DIMENSIONAL DRAWINGS
16
© 2022 Littelfuse, Inc. 535 Littelfuse.com/relayscontrols
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters)
Figure 48
Time Delay Relay
Seconds
1.5
1.0
0.5
00.5
2.0
2.5
3.0
2.31
1.69
3.63 MAX
2.91
1.75
2.38
Time Delay Relay
Seconds
1.5
1.0
0.5
00.5
2.0
2.5
3.0
2.31
1.69
3.63 MAX
2.91
1.75
2.38
3.63 MAX
2.91
1.75
2.38
PRS65
SIO-RTD-02-00
Measurements: inches
Figure 49 87.0 (3.43)
112.5
(4.43)
ADDRESS SWITCH
ACCESS COVER
CABLE-TIE EYELET
4 LOCATIONS
12.5
(0.50)
60.0
(2.36)
14.5
(0.57)
6.3
(0.25)
100.0
(3.94)
6.3
(0.25)
M4 OR 8-32 TAP
52.5
(2.07)
56.0
(2.20)
(NOTE 3)
NOTES:
1. DIMENSIONS IN MILLIMETERS (INCHES).
2. MOUNTING SCREWS: M4 OR 8-32.
3. OVERALL HEIGHT WHEN MOUNTED ON
DIN EN50022 35-mm x 7.5-mm
TOP-HAT RAIL.
R
C D R C D R C D R C D R S
P
G
D C R D C R D C R D C - +
+
2
4
V 0
V S
H
S
H
S
H
S
H
INP1
INP8
INP 2
INP7
PWR
COMM
INP 3
INP6
INP 4
INP5
COMM
SIO-RTD
INPUT MODULE
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
34 33 32 31 30 29 28 2726 25 24 23 22 21 20 19
PWR
APPENDIX – DIMENSIONAL DRAWINGS
16
Littelfuse.com/relayscontrols 536 © 2022 Littelfuse, Inc.
Appendix
Dimensional Drawings
DIMENSIONAL DRAWINGS
Measurements: inches (millimeters)
MP8000
Figure 50
4.08 (103.63)
0.63
(16.00)
1.25 (31.75)
4.79 (121.67)
2.93 (74.42)
3.10 (78.74)
2.50 (63.50)
4.08 (103.63)
4.79 (121.67)
2.93 (74.42)
4.08 (103.63)
0.63
(16.00)
1.25 (31.75)
4.79 (121.67)
2.93 (74.42)
3.10 (78.74)
2.50 (63.50)
APPENDIX – DIMENSIONAL DRAWINGS
16
© 2022 Littelfuse, Inc. 537 Littelfuse.com/relayscontrols
Index
ALPHANUMERIC INDEX
INDEX
102A Series pg 198
111-Insider-P / 231-Insider-P 101
111P / 233P / 233P-1.5 Series 106
201-100-SLD 136
201-XXX-DPDT Series 204
201-XXX-SP Series 190
201-XXX-SP-DPDT Series 192
201A Series 200
201A-AU Series 202
202 Series 206
202-200-SP Series 194
232-Insider 104
234-P 108
235P 110
250A Series 208
350 Series 210
355 Series 212
455 Series 214
460 Series 216
460-15-100-LLS 137
460-15-100-SLD 139
460-XXX-SP Series 196
50R Series 188
50R-400-ALT 159
601 Series 218
601-CS-D-P1 220
777 Series 114
777-P2 114
777-AccuPower 123
777-KW / HP-P2 Series 120
777 / 77C Series 118
77C-KW/HP Series 125
A0220 80, 473
AC / DC Earthed System 48
ACBC-120 130
Accessories 467
AC System Monitors / Load Sensors 22, 167
AF0100 79
AF0500 77
Alarm Control / Battery Charger 21, 130
ALT Series 153
ALT-XXX-1-SW / ALT-XXX-3-SW Series 155
Alternating Relays 20, 153
ANSI Device Numbers 506
Appendix – Dimensional Drawings 507
Arc-Flash Protection pg 14, 73
ARP Series 157
ASQU / ASTU Series 270
Brackets & Clips 486
CIO-777-PR 259
CIO-DN-P / CIO-120-DN-P 257
CIO-EN 260
CIO-MB / CIO-120-MB 255
COM 4-20 261
Communication Adapters & Modules 253, 476
CP5 Series 168
CT Application 502
CT Selection Guide 479
CT Series 426
Current Monitoring / Load Sensing Relays 24
Current Monitoring Relays & Transducers 167
Current Transformers 480
Current Transformers Sizing Chart 482
D0920 74
DCSA Series (w / LCSC10T12) 185
Dedicated Timers 28, 262
Dimensional Drawings 507
DIN-Rail & Mounting Adapters 485
DLMU Series 224
DSQU / DSTU Series 272
ECS Series 175
ECSW Series 178
EL3100 44
EL731 48
Electrical Accessories 469
Enclosures & Watertight Covers 487
ERD3425A 391
ERDI Series 362
ERDM Series 275
ESD52233 422
ESDR Series 393
FA / FS Series 455
FB Series 457
FB9L 461
Feeder Protection 14, 69
Find the Right Product for Your Application 2
Flashers 39, 439
Flashers, Beacon Tower 41
Flashers, Photo Control 41
Flashers & Tower Lighting Controls 39, 439
17
Littelfuse.com/relayscontrols 538 © 2022 Littelfuse, Inc.
Index
ALPHANUMERIC INDEX
INDEX
FPS pg 71
FPU-32 70
FS100 (low current) Series 442
FS100 (med power) Series 444
FS200 Series 446
FS300 Series 448
FS491 450
FS500 Series 451
FSU1000 Series 440
Generator Ground-Fault Relay 55
GFA300 55
Glossary of Terms 490
Ground Reference Modules 472
Ground-Conductor Monitoring 13, 57
Ground-Fault Circuit Interrupters 53
Ground-Fault Protection 12, 43
High-Tension Couplers 472
HLMU Series 227
HLVA6I23 241
HRDB Series 315
HRDI Series 364
HRDM Series 277
HRDR Series 396
HRDS Series 337
HRPS / HRIS Series 317
HRV Series 437
HSPZA22SL 339
IEEE Device Numbers 506
Industrial Shock-Block 53
Informer 250, 475
Informer-MS 252, 475
Input Modules 473
Instrumentation & Metering Transformers 481
Intrinsically Safe Relays/Pump Controllers 21, 160
Introduction to Protection Relays 493
ISS-100 160
ISS-101 161
ISS-102 Series 163
ISS-105 Series 165
KRD3 Series 398
KRD9 Series 388
KRDB Series 319
KRDI Series 366
KRDM Series 279
KRDR Series 400
KRDS Series 341
KRPD Series pg 424
KRPS Series 281
KSD1 Series 284
KSD2 Series 368
KSD3 Series 402
KSDB Series 321
KSDR Series 404
KSDS Series 343
KSDU Series 286
KSPD Series 406
KSPS Series 288
KSPU Series 370
KVM Series 243
LCSC10T12 185, 473
LCS10T12 / LPM Series 187
Liquid Level Control 19, 129, 478
LLC1 Series 141
LLC2 Series 143
LLC4 Series 145
LLC5 Series 147
LLC6 Series 149
LLC8 Series 151
Load Sensors 22
LSR-0 169
LSR-XXX Series 170
LSRU Series 171
LSRX / LSRX-C Series 173
Motor & Pump Protection 16, 93
Motor & Pump Protection with Bluetooth® 17, 112
Mounting Adapters & Enclosures 483
MP8000 112
MP8100 112
MPS 98
MPS-469X 100
MPU-32 96
MPU-32-X69X 100
MSM Series 291
Multifunction Timers 262
Neutral-Grounding Resistor Chart 61
Neutral-Grounding Resistor Package 66
NGR 66
NGRM-ENC 67, 487
NGR Monitoring 13, 61
ORB Series 323
ORM Series 293
ORS Series 345
17
© 2022 Littelfuse, Inc. 539 Littelfuse.com/relayscontrols
Index
ALPHANUMERIC INDEX
INDEX
Overview pg 489
Panel Mount Adapters 483
Personnel Protection 53
PC-102 Series 132
PC-105 133
PC-XXX-LLC-CZ / PC-XXX-LLC-GM 134
PCR Series 465
PGA-1100 81, 469
PGA-LS10 473
PGA-LS20 473
PGA-LS30 473
PGR-3100 45
PGR-3200 46
PGR-4300 45
PGR-6100 94
PGR-6101-120 95
PGR-8800 75
PHS Series 84
PLM Series 231
PLMU11 229
PLR Series 237
PLS Series 239
PRLM Series 295
Product Selection Guide 11
PRS65 347
PTHF4900DK 418
Pump Controls & Liquid Level Controls 18, 129
Relay Application 494
Pump Protection 16, 98
Relay Software 468
Relay Testing Equipment 472
Remote Indication & Meters 473-474
Remote Indication & Monitoring 245, 475
Resistance-Grounded Systems 62, 504
Resistance-Grounding Conversion 503
Resistance Grounding 13, 61
RM1000 Series 246, 475
RM2000 Series 248, 475
RS Series 408
RS485MS-2W 254
SB6000 Series 53
SC3 / SC4 Series 453
SCR Series 459
SCR490D 458
SCR9L 463
SE-105 / SE-107 58
SE-134C / SE-135 pg 59
SE-325 62
SE-330 / SE-330HV 63
SE-330AU 65
SE-601 47
SE-701 50
SE-703 51
SE-704 52
Seal Leak Detectors 18, 129
Sequencing Controls 453
Sensing Resistors 474
Shock-Block GFCI 53
SIO-RTD-02-00 128
SIR Series 86
SLR Series 88
Sockets 488
Software 468
Solidly-Grounded Systems 43, 504
Switching Relays & Controls 15, 83
T10 Series 274
T2D120A15M 428
TA Series 430
TAC1 Series 432
TCR9C 90
TCS Series 181
TCSA Series 183
TDB / T DBH / TDBL Series 325
TDI / TDIH / TDIL Series 372
TDM / TDMH / TDML Series 297
TDMB Series 420
TDR Series 410
TDS / TDSH / TDSL Series 348
TDU / TDUH / TDUL Series 299
TDUB Series 327
TDUI / TDUIH / TDUIL Series 374
TDUS Series 350
Termination & Adapters 477
TH1 Series 301
THC / THS Series 352
THD1B410.5S 303
THD2 Series 376
THD3C42A0 412
THD7 Series 378
THDB Series 329
THDS Series 354
Time Delay Relays 26, 262
17
Littelfuse.com/relayscontrols 540 © 2022 Littelfuse, Inc.
Index
ALPHANUMERIC INDEX
INDEX
Timer Function Guide pg 264
Timers, Factory-Programmable 26
Timers, Multifunction 27
Timing Function Symbols 264
TL Series 434
TMV8000 / TSU2000 Series 305
Tower & Obstruction Lighting Controls 39, 41, 439
Trailing Cable Protection 57
TRB Series 331
TRDU Series 265
TRM Series 307
TRS Series 356
TRU Series 268
TS1 Series 309
TS2 / TS6 Series 380
TS441165 313
TSA141300 436
TSB Series 333
TSD1 Series 311
TSD2 Series 382
TSD3411S 414
TSD6 Series 384
TSD7 Series 386
TSD94110SB 390
TSDB Series 335
TSDR Series 416
TSDS Series 358
TSS Series 360
TVM Series 235
TVW Series 233
Typical Suffixes 506
Ungrounded AC Systems 43
Ungrounded DC System 47
Ungrounded System 504
Voltage Monitoring Relays 22, 167
WVM Series 222
Introduction to Protection Relays and Applications
Lowering the Limits for Ground-Fault Protection
The Importance of Effective Motor
and Motor Circuit Protection
Ground-Fault Protection with VFDs
Selecting an Arc-Flash Relay
Why NGRs Need Monitoring
Transformer Protection
Littelfuse Literature
is in the App Store!
Our free Littelfuse Catalogs and
Literature App keeps our products and
technical resources at your finger tips,
wherever you are. Find products and
technical specifications you need,
quickly and easily!
White Papers & Technical Information
An expanded Technical Application Guide, White Papers,
and a library of technical information is available online at
Littelfuse.com/TechnicalCenter. Littelfuse can help you
address application and circuit protection challenges while
achieving regulatory compliance.
17
Kaunas
Amsterdam
Bellingham
Boston
Fort Collins
Essen
Saskatoon
Seoul Tokyo
Tsukuba
Suzhou
Wuxi
Beijing
Noida
Seongnam
Shanghai
Kunshan
Taipei
Chu-pei
Dongguan
Shenzhen
Hong Kong
Lipa City
Singapore
São Paulo
Taguig
Legnago
Bremen
Lampertheim
Deventer
Charneca de Caparica
Chippenham
San Sabastian
LeidenLauf
Ozegna
Burlington
Beverly
Troy
Muzquiz Matamoros
Piedras Negras
Eagle Pass
Manaus
Rapid City Lake Mills
Rock Falls Chicago
Mount Prospect
Champaign
Fremont
Aliso Viejo
Long Beach
Milpitas
Orange
Santa Clara
LOLocal Resources for a CAL RESOURCES FOR A GLOBGLOBAL AL MARKET Market
Visit Technical Resources at Littelfuse.com
Technical information is only a click away. The Littelfuse Technical
Resources contains datasheets, product manuals, whitepapers,
application guides, demos, on-line design tools, and more.
Fuses and Fuse Holders Catalog (PF101N)
Littelfuse offers a complete circuit protection portfolio of
industrial power fuses, including time-saving indication
products for an instant visual blown-fuse identification.
An Extension of Your Team
Technical Hotline (800-TEC-FUSE or 800-832-3873)
Littelfuse engineers are a phone call away to help identify potential issues and provide
product recommendations to resolve problems.
Application and Field Support
Our experienced product and application engineers work step-by-step with customers
from design to installation to determine the best solution.
POWR-GARD®
Solar Catalog (PF140N)
POWR-GARD Solar Products are designed specifically
for photovoltaic applications where issues such as
heat, efficiency, longevity and global standards impact
the choices in selecting circuit protection.
© 2022 Littelfuse, Inc.
FORM PF130N
Rev: 3-A-041922
Littelfuse products are certified to many standards around
the world. To check certifications on specific product please
refer to the product datasheet on Littelfuse.com.
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for
their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.
North America
Littelfuse World Headquarters
8755 West Higgins Road, Suite 500
Chicago, IL 60631, USA
Littelfuse SymCom
1241 Concourse Drive
Rapid City, SD 57703, USA
Littelfuse Startco
140 – 15 Innovation Boulevard
(The Galleria Building)
Saskatoon, SK S7N 2X8, Canada
Tel: +1-306-373-5505
Technical Support:
Tel: +1-800-TEC-FUSE
E-mail: techline@littelfuse.com
Customer Service:
Tel: +1-800-227-0029
E-mail: PG_CSG@littelfuse.com
Asia
Littelfuse
Unit 1604B Desay Building,
Gaoxin Nanyi Ave.
Hi-Tech Industrial Park
Nashan District
Shenzen, 518057, China
+86 755 8207 0760
Europe
Littelfuse
Julius-Bamberger-Str. 8a
Bremen, D-28279, Germany
+49 421 82 87 3 147
Hartland Controls now part of Littelfuse
807 Antec Road
Rock Falls, IL 61071, USA
Tel: +1-815-626-5170