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 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Omron
|
Send RFQ |
Price on request
Price and Stock
on Request |
1 ~ 40s | Manual Reset, Test Button | Overcurrent, Phase Loss, Phase Sequence | Socketable | -10°C ~ 60°C | Plug In, 8 Pin (Octal) | 1 ~ 160A | 100/110/120VAC | |
|
Omron
|
Send RFQ |
Price on request
Price and Stock
on Request |
1 ~ 40s | Manual Reset, Test Button | Overcurrent, Phase Loss, Phase Sequence | Panel Mount | -10°C ~ 60°C | Screw Terminal | 1 ~ 160A | 200/220/240VAC | |
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.2 ~ 500s | - | Arc-Flash, Overload | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 2 ~ 90A, 85 ~ 264VAC | 100 ~ 240VAC | |
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.2 ~ 500s | - | Arc-Flash, Overload | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 1 ~ 9A, 85 ~ 264VAC | 100 ~ 240VAC | |
Siemens
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | Automatic Reset, Manual Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Screw Terminal | - | 24 ~ 240VAC/DC | |
Siemens
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | Automatic Reset, Manual Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Spring Terminal | - | 24 ~ 240VAC/DC | |
Siemens
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | Automatic Reset, Manual Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Screw Terminal | - | 24 ~ 240VAC/DC | |
Siemens
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | Automatic Reset, Manual Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Spring Terminal | - | 24 ~ 240VAC/DC | |
|
Omron
|
Send RFQ |
Price on request
Price and Stock
on Request |
2 ~ 40s | Automatic Reset, Test Button | Overcurrent, Phase Loss, Phase Sequence | Chassis Mount | -10°C ~ 60°C | Screw Terminal | 2 ~ 8A | 200/220/240VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0 ~ 999s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 1 ~ 800A, 170 ~ 528VAC | 500 ~ 600VAC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.075 ~ 0.1s | - | Overvoltage, Undervoltage | Chassis Mount | -40°C ~ 75°C | Screw Terminal | 8.4 ~ 15VAC | 12VDC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.075 ~ 0.1s | - | Overvoltage, Undervoltage | Chassis Mount | -40°C ~ 75°C | Screw Terminal | 19.6 ~ 35VDC | 28VDC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0 ~ 999s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 2 ~ 100A, 450 ~ 660VAC | 500 ~ 600VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0 ~ 999s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 2 ~ 90A, 170 ~ 660VAC | 200 ~ 480VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
2 ~ 500s | - | Ground Fault, Overcurrent | Chassis Mount | -40°C ~ 70°C | Screw Terminal | 2 ~ 800A | 190 ~ 480VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
2 ~ 60s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 2 ~ 800A, 170 ~ 528VAC | 200 ~ 480VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0 ~ 999s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 1 ~ 800A, 340 ~ 528VAC | 380 ~ 480VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0 ~ 999s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 2 ~ 800A, 340 ~ 528VAC | 380 ~ 480VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0 ~ 999s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 10 ~ 800A, 85 ~ 264VAC | 100 ~ 240VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.2 ~ 500s | - | Ground Fault, Overcurrent, Undercurrent, Undervoltage | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 2 ~ 800A, 340VAC | 340 ~ 480VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
3 ~ 30s | Automatic Reset | Overcurrent | Chassis Mount | -20°C ~ 70°C | Screw Terminal | - | 230VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | Test Button | Ground Fault | Chassis Mount | -40°C ~ 50°C | Screw Terminal | - | 120VAC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.15 ~ 0.3s | - | Undervoltage | Chassis Mount | -20°C ~ 65°C | Screw Terminal | 145.6 ~ 208VAC | 208VAC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0 ~ 999s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 0.5 ~ 21A, 40 ~ 740A, 170 ~ 528VAC | 200 ~ 480VAC | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.2 ~ 500s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 1 ~ 9A, 170 ~ 528VAC | 200 ~ 480VAC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | Overvoltage | Chassis Mount | -20°C ~ 65°C | Screw Terminal | 120 ~ 150VAC | 120VAC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.05 ~ 2.5s | CT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button | Ground Fault | Chassis Mount, DIN Rail | -40°C ~ 60°C | Screw Terminal | - | 24VAC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
Omron
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
Littelfuse Inc.
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.03 ~ 20s | CT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button | Ground Fault | DIN Rail | -40°C ~ 60°C | Screw Terminal | 0.01 ~ 5A | 24VAC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.15 ~ 0.3s | - | Undervoltage | Chassis Mount | -20°C ~ 65°C | Screw Terminal | 336 ~ 480VAC | 480VAC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - |
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