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Protection Relays & Systems

Protection Relays & Systems protect electrical circuits by detecting faults and preventing damage. Key attributes include Delay Time, Operating Temperature, and Trip Range. These components are essential for applications such as switching and control panels.

1,359 active parts
16 manufacturers
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What are Protection Relays & Systems ?

Protection Relays & Systems are devices designed to monitor electrical circuits and provide protection against faults. They are commonly used in switching and control panels, ensuring the safe operation of electrical systems. Important specifications for selection include Delay Time, which affects response speed; Operating Temperature, which ensures reliability under varying conditions; and Trip Range, which determines the sensitivity to faults. Validating lifecycle status and sourcing options is crucial for procurement teams to ensure compatibility and performance.

Parts in this category

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Part & Mfr Delay Time Features Function Mounting Type Operating Temperature Termination Style Trip Range Voltage
Product image for 1-1618065-5 by TE Connectivity
1-1618065-5
TE Connectivity
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Product image for 253DC-HX by TE Connectivity
253DC-HX
TE Connectivity
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Product image for WUV-3-480 by TE Connectivity
WUV-3-480
TE Connectivity
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Product image for 2701462 by Phoenix Contact
2701462
Phoenix Contact
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 - - - Panel Mount -25°C ~ 45°C - 500mA 230VAC
Product image for 777-575-LR-HRG-P2 by Littelfuse Inc.
777-575-LR-HRG-P2
Littelfuse Inc.
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 0 ~ 999s - Multiple Chassis Mount -20°C ~ 70°C Screw Terminal 10 ~ 800A 500 ~ 600VAC
Product image for 777-575-TS by Littelfuse Inc.
777-575-TS
Littelfuse Inc.
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 0.2 ~ 500s - Multiple Chassis Mount -20°C ~ 70°C Screw Terminal 2 ~ 800A, 450 ~ 660VAC 500 ~ 600VAC
Product image for 777-LR-HRG-P2 by Littelfuse Inc.
777-LR-HRG-P2
Littelfuse Inc.
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 0 ~ 999s - Multiple Chassis Mount -20°C ~ 70°C Screw Terminal 10 ~ 800A, 170 ~ 528VAC 200 ~ 480VAC
Product image for 777VA-02 by Littelfuse Inc.
777VA-02
Littelfuse Inc.
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 0.2 ~ 0.5s - Multiple Chassis Mount -20°C ~ 70°C Screw Terminal 2 ~ 800A, 170 ~ 528VAC 200 ~ 480VAC
Product image for 777VA-03 by Littelfuse Inc.
777VA-03
Littelfuse Inc.
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 0.2 ~ 500s - Multiple Chassis Mount -20°C ~ 70°C Screw Terminal 2 ~ 800A, 170 ~ 528VAC 200 ~ 480VAC
Product image for FPS-CTU-03-00 by Littelfuse Inc.
FPS-CTU-03-00
Littelfuse Inc.
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 - - Multiple Chassis Mount - Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPS-CTU-01-01 by Littelfuse Inc.
MPS-CTU-01-01
Littelfuse Inc.
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 - - Multiple Chassis Mount - Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-00000 by Littelfuse Inc.
MPU-32-X69X-00000
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-00100 by Littelfuse Inc.
MPU-32-X69X-00100
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-01000 by Littelfuse Inc.
MPU-32-X69X-01000
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-01100 by Littelfuse Inc.
MPU-32-X69X-01100
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-02000 by Littelfuse Inc.
MPU-32-X69X-02000
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-02100 by Littelfuse Inc.
MPU-32-X69X-02100
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-04000 by Littelfuse Inc.
MPU-32-X69X-04000
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-04100 by Littelfuse Inc.
MPU-32-X69X-04100
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-10000 by Littelfuse Inc.
MPU-32-X69X-10000
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for MPU-32-X69X-10100 by Littelfuse Inc.
MPU-32-X69X-10100
Littelfuse Inc.
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 - - Multiple Panel Mount -40°C ~ 60°C Screw Terminal - 65 ~ 265VAC, 80 ~ 275VDC
Product image for PRSL-400 by R-K Electronics, Inc.
PRSL-400
Download Datasheet for PRSL-400
R-K Electronics, Inc.
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 - - - Chassis Mount - Screw Terminal - -
Product image for PRS-400 by R-K Electronics, Inc.
PRS-400
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R-K Electronics, Inc.
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 - - - Chassis Mount - Screw Terminal - -
Product image for PVCL-600-AR by R-K Electronics, Inc.
PVCL-600-AR
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R-K Electronics, Inc.
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 5s Automatic Reset Overvoltage, Undervoltage Chassis Mount -20°C ~ 40°C Screw Terminal - 575 ~ 600VAC
Product image for PVCO-600-AR by R-K Electronics, Inc.
PVCO-600-AR
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R-K Electronics, Inc.
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 5s Automatic Reset Overvoltage, Undervoltage Chassis Mount -20°C ~ 40°C Screw Terminal - 575 ~ 600VAC
Product image for PVCL-400-AR by R-K Electronics, Inc.
PVCL-400-AR
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R-K Electronics, Inc.
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 5s Automatic Reset Overvoltage, Undervoltage Chassis Mount -20°C ~ 40°C Screw Terminal - 440 ~ 480VAC
Product image for PGR-6801-120 by Littelfuse Inc.
PGR-6801-120
Littelfuse Inc.
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Product image for PGR-6802-120 by Littelfuse Inc.
PGR-6802-120
Littelfuse Inc.
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Product image for PVCL-400-AR-5 by R-K Electronics, Inc.
PVCL-400-AR-5
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R-K Electronics, Inc.
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 5s Automatic Reset Overvoltage, Undervoltage Chassis Mount -20°C ~ 40°C Screw Terminal - 440 ~ 480VAC
Product image for PVCO-400-AR by R-K Electronics, Inc.
PVCO-400-AR
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R-K Electronics, Inc.
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 5s Automatic Reset Overvoltage, Undervoltage Chassis Mount -20°C ~ 40°C Screw Terminal - 440 ~ 480VAC
Product image for PVCL-400-AR-0001 by R-K Electronics, Inc.
PVCL-400-AR-0001
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R-K Electronics, Inc.
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 5s Automatic Reset Overvoltage, Undervoltage Chassis Mount -20°C ~ 40°C Screw Terminal - 440 ~ 480VAC
Product image for 2-1618393-6 by TE Connectivity
2-1618393-6
TE Connectivity
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Product image for LVM-1-400M-S-5000 by R-K Electronics, Inc.
LVM-1-400M-S-5000
Download Datasheet for LVM-1-400M-S-5000
R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 0.025 ~ 0.4VAC 100 ~ 125VAC
Product image for LVMR-1-400M-S by R-K Electronics, Inc.
LVMR-1-400M-S
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R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 0.025 ~ 0.4VAC 100 ~ 125VAC
Product image for LVMR-1-4.5V-S by R-K Electronics, Inc.
LVMR-1-4.5V-S
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R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 0.25 ~ 4.5VAC 100 ~ 125VAC
Product image for CSRA-115A-2-20-AR by R-K Electronics, Inc.
CSRA-115A-2-20-AR
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R-K Electronics, Inc.
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 0.2 ~ 20s Automatic Reset Overcurrent, Undercurrent Chassis Mount 0°C ~ 55°C Screw Terminal 4 ~ 20A 115VAC
Product image for LVM-1-26V-S by R-K Electronics, Inc.
LVM-1-26V-S
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R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 1.4 ~ 26VAC 100 ~ 125VAC
Product image for CSRA-115A-2-5-AR by R-K Electronics, Inc.
CSRA-115A-2-5-AR
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R-K Electronics, Inc.
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 0.2 ~ 20s Automatic Reset Overcurrent, Undercurrent Chassis Mount 0°C ~ 55°C Screw Terminal 1 ~ 5A 115VAC
Product image for LVM-1-4.5V-S by R-K Electronics, Inc.
LVM-1-4.5V-S
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R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 0.25 ~ 4.5VAC 100 ~ 125VAC
Product image for LVM-1-75M-S-1000 by R-K Electronics, Inc.
LVM-1-75M-S-1000
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R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 0.005 ~ 75VAC 100 ~ 125VAC
Product image for PRRL-600 by R-K Electronics, Inc.
PRRL-600
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R-K Electronics, Inc.
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 5s - Phase Loss Chassis Mount 0°C ~ 40°C Screw Terminal - 575 ~ 600VAC
Product image for CSRA-115A-2-30-AR by R-K Electronics, Inc.
CSRA-115A-2-30-AR
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R-K Electronics, Inc.
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 0.2 ~ 20s Automatic Reset Overcurrent, Undercurrent Chassis Mount 0°C ~ 55°C Screw Terminal 6 ~ 30A 115VAC
Product image for LVMR-1-150V-S by R-K Electronics, Inc.
LVMR-1-150V-S
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R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 10 ~ 150VAC 100 ~ 125VAC
Product image for PRRO-100 by R-K Electronics, Inc.
PRRO-100
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R-K Electronics, Inc.
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 5s - Phase Loss Chassis Mount 0°C ~ 40°C Screw Terminal - 110 ~ 120VAC
Product image for LVM-1-400M-S by R-K Electronics, Inc.
LVM-1-400M-S
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R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 0.025 ~ 0.4VAC 100 ~ 125VAC
Product image for PRRO-200 by R-K Electronics, Inc.
PRRO-200
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R-K Electronics, Inc.
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 5s - Phase Loss Chassis Mount 0°C ~ 40°C Screw Terminal - 200 ~ 240VAC
Product image for LVM-1-4.5V-L by R-K Electronics, Inc.
LVM-1-4.5V-L
Download Datasheet for LVM-1-4.5V-L
R-K Electronics, Inc.
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 1.5s - - Chassis Mount 0°C ~ 40°C Screw Terminal 0.25 ~ 4.5VAC 100 ~ 125VAC
Product image for CSRA-115A-1-5-AR by R-K Electronics, Inc.
CSRA-115A-1-5-AR
Download Datasheet for CSRA-115A-1-5-AR
R-K Electronics, Inc.
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 0.2 ~ 20s Automatic Reset Overcurrent, Undercurrent Chassis Mount 0°C ~ 55°C Screw Terminal 1 ~ 5A 115VAC
Product image for LVM-2-26V-S by R-K Electronics, Inc.
LVM-2-26V-S
Download Datasheet for LVM-2-26V-S
R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 1.4 ~ 26VAC 200 ~ 250VAC
Product image for LVM-2-400M-S by R-K Electronics, Inc.
LVM-2-400M-S
Download Datasheet for LVM-2-400M-S
R-K Electronics, Inc.
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 0.75s - - Chassis Mount 0°C ~ 40°C Screw Terminal 0.025 ~ 0.4VAC 200 ~ 250VAC
Showing 151-200 of 1,359 products

About Protection Relays & Systems

Protection Relays & Systems play a vital role in ensuring the safety and reliability of electrical systems. These components are designed to detect abnormal conditions and initiate protective actions to prevent damage to equipment and ensure operational continuity.

When sourcing Protection Relays & Systems, it is important to consider key attributes such as Delay Time, Features, Function, Mounting Type, Operating Temperature, Termination Style, Trip Range, and Voltage. These specifications will help you identify the right relay for your specific application needs.

Common applications for Protection Relays & Systems include switching and control panels, new product design and prototyping, production electronics assembly, maintenance and field replacement, and engineering evaluation and qualification. Understanding the operational context will aid in selecting the most suitable components.

Before submitting a Request for Quotation (RFQ), buyers should prioritize comparing critical specifications and validating lifecycle status. It is also advisable to confirm mechanical and electrical compatibility with existing design constraints to minimize sourcing risks. Utilizing parametric filtering can streamline the selection process and enhance procurement efficiency.

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