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Protection Relays & Systems

Explore Protection Relays & Systems parts from multiple manufacturers, with model information, availability, datasheets and technical specifications for engineering and purchasing.

For parts that are not shown in the list, send the manufacturer part number, quantity or BOM to ICMENU. Our team can assist with availability checks and quotation support.

Photo Mfr. Part # Availability Price Quantity Datasheet Series Packaging Product Status Function Voltage - Supply Trip Range Delay Time Mounting Type Termination Style Features Operating Temperature
3RN20132BW30 Siemens

3RN20132BW30

THERMISTOR MOTOR PROT. 2CO PROT.

Siemens

4,973
Datasheet SIRIUS Box Active Overtemperature 24 ~ 240VAC/DC - - DIN Rail Spring Terminal Automatic Reset, Manual Reset -25°C ~ 60°C
S8M-CP04-R Omron Automation and Safety

S8M-CP04-R

PWR MULTICIRCUIT PROTECT RS-232

Omron Automation and Safety

3,896
Datasheet S8M Bulk Active Overcurrent, Overtemperature, Overvoltage, Undervoltage 24VDC 0.5mA ~ 4A, 18.0 ~ 28.8VDC - DIN Rail Screw Terminal - -10°C ~ 60°C
AC-301-440 ATC-Diversified Electronics

AC-301-440

AC-301 SERIES THREE PHASE LINE U

ATC-Diversified Electronics

1,191
Datasheet AC-301 Box Active Phase Loss, Phase Sequence, UnderVoltage 430 ~ 480VAC 357 ~ 432VAC 12 ~ 480s Chassis Mount Screw Terminal Automatic Reset -40°C ~ 65.6°C
SE-K2N Omron Automation and Safety

SE-K2N

RELAY MOTOR PROTECT 200/220/240V

Omron Automation and Safety

2,035
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 200/220/240VAC 1 ~ 160A 1 ~ 40s Panel Mount Screw Terminal Manual Reset, Test Button -10°C ~ 60°C
SE-KP1AN Omron Automation and Safety

SE-KP1AN

RELAY MOTOR PROTECT 100/110/120V

Omron Automation and Safety

1,605
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 100/110/120VAC 1 ~ 160A 1 ~ 40s Socketable Plug In, 8 Pin (Octal) Automatic Reset, Test Button -10°C ~ 60°C
SE-KP1N Omron Automation and Safety

SE-KP1N

RELAY MOTOR PROTECT 100/110/120V

Omron Automation and Safety

4,919
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 100/110/120VAC 1 ~ 160A 1 ~ 40s Socketable Plug In, 8 Pin (Octal) Manual Reset, Test Button -10°C ~ 60°C
3RN20131GW30 Siemens

3RN20131GW30

THERMISTOR MOT. PROT. 2W GOLD PR

Siemens

2,779
Datasheet SIRIUS Box Active Overtemperature 24 ~ 240VAC/DC - - DIN Rail Screw Terminal Automatic Reset, Manual Reset -25°C ~ 60°C
SE-K1EN Omron Automation and Safety

SE-K1EN

RELAY MOTOR PROTECT 100/110/120V

Omron Automation and Safety

2,140
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 100/110/120VAC 1 ~ 160A 1 ~ 40s Panel Mount Screw Terminal Manual Reset, Test Button -10°C ~ 60°C
SE-K2EN Omron Automation and Safety

SE-K2EN

RELAY MOTOR PROTECT 200/220/240V

Omron Automation and Safety

1,364
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 200/220/240VAC 1 ~ 160A 1 ~ 40s Panel Mount Screw Terminal Manual Reset, Test Button -10°C ~ 60°C
SE-KP1EN Omron Automation and Safety

SE-KP1EN

RELAY MOTOR PROTECT 100/110/120V

Omron Automation and Safety

3,402
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 100/110/120VAC 1 ~ 160A 1 ~ 40s Socketable Plug In, 8 Pin (Octal) Manual Reset, Test Button -10°C ~ 60°C
SE-KP2EN Omron Automation and Safety

SE-KP2EN

RELAY MOTOR PROTECT 200/220/240V

Omron Automation and Safety

3,917
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 200/220/240VAC 1 ~ 160A 1 ~ 40s Socketable Plug In, 8 Pin (Octal) Manual Reset, Test Button -10°C ~ 60°C
SE-KP2N Omron Automation and Safety

SE-KP2N

RELAY MOTOR PROTECT 200/220/240V

Omron Automation and Safety

4,379
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 200/220/240VAC 1 ~ 160A 1 ~ 40s Socketable Plug In, 8 Pin (Octal) Manual Reset, Test Button -10°C ~ 60°C
SE-KQP1N Omron Automation and Safety

SE-KQP1N

RELAY MOTOR PROTECT 100/110/120V

Omron Automation and Safety

1,146
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 100/110/120VAC 1 ~ 160A 1 ~ 40s Socketable Plug In, 8 Pin (Octal) Manual Reset, Test Button -10°C ~ 60°C
SE-KQP2EN Omron Automation and Safety

SE-KQP2EN

RELAY MOTOR PROTECT 200/220/240V

Omron Automation and Safety

3,591
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 200/220/240VAC 1 ~ 160A 1 ~ 40s Socketable Plug In, 8 Pin (Octal) Manual Reset, Test Button -10°C ~ 60°C
SE-KQP2N Omron Automation and Safety

SE-KQP2N

RELAY MOTOR PROTECT 200/220/240V

Omron Automation and Safety

1,520
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 200/220/240VAC 1 ~ 160A 1 ~ 40s Socketable Plug In, 8 Pin (Octal) Manual Reset, Test Button -10°C ~ 60°C
SE-K4EN Omron Automation and Safety

SE-K4EN

RELAY MOTOR PROTECT 380/400/440V

Omron Automation and Safety

3,828
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 380/400/440VAC 1 ~ 160A 1 ~ 40s Panel Mount Screw Terminal Manual Reset, Test Button -10°C ~ 60°C
777-P2-DEMO-2 Littelfuse Inc.

777-P2-DEMO-2

P2 DEMO KIT W/ RM1K

Littelfuse Inc.

1,581
Datasheet 777 Bulk Obsolete Multiple 200 ~ 480VAC 200 ~ 480V AC - Chassis Mount Screw Terminal Demo Kit with CIO-EN and RM-1000 -20°C ~ 70°C
3RN20121BW31 Siemens

3RN20121BW31

THERMISTOR MOTOR PROT. 2 CO BIST

Siemens

3,421
Datasheet SIRIUS Box Active Overtemperature 24 ~ 240VAC/DC - - DIN Rail Screw Terminal Automatic Reset, Manual Reset -25°C ~ 60°C
3RN20122BW31 Siemens

3RN20122BW31

THERMISTOR MOTOR PROT. 2 CO BIST

Siemens

3,364
Datasheet SIRIUS Box Active Overtemperature 24 ~ 240VAC/DC - - DIN Rail Spring Terminal Automatic Reset, Manual Reset -25°C ~ 60°C
SE-KQP1EN Omron Automation and Safety

SE-KQP1EN

RELAY MOTOR PROTECT 100/110/120V

Omron Automation and Safety

1,557
Datasheet SE Bulk Active Overcurrent, Phase Loss, Phase Sequence 100/110/120VAC 1 ~ 160A 1 ~ 40s Socketable Plug In, 8 Pin (Octal) Manual Reset, Test Button -10°C ~ 60°C
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FAQ

Frequently Asked Questions

What are Protection Relays & Systems components used for?

Protection Relays & Systems components are used in a wide range of electronic equipment and systems. Their exact function depends on the device, circuit design and technical requirements of the application.

How do I choose the right Protection Relays & Systems part?

Compare the manufacturer part number, key specifications, package type, operating conditions, availability and datasheet information. For replacement projects, always verify the critical electrical and mechanical parameters before selecting an alternative.

Can ICMENU help source obsolete or hard-to-find Protection Relays & Systems parts?

Yes. Send us the required manufacturer part number, quantity or BOM. Our sourcing team can help check stock availability, lead time, alternative sourcing options and quotation details.

How can I request pricing and availability?

Submit the part number, manufacturer and required quantity through our RFQ form. ICMENU will review your request and provide available stock, pricing and sourcing information.

BOM & COMPONENT SOURCING

Need Pricing or Stock Support for Protection Relays & Systems?

Submit your required part numbers, manufacturers and quantities to receive stock availability, pricing, lead-time and sourcing support. Our team assists with active components, shortage parts, obsolete models and one-stop BOM procurement.

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