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 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Macromatic Industrial Controls
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0.1 ~ 10s | - | Overvoltage, Undervoltage | Socketable | -28°C ~ 65°C | Plug In, 8 Pin (Octal) | 68 ~ 150VAC | 120VAC | |
Macromatic Industrial Controls
|
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0.1 ~ 10s | - | Overvoltage, Undervoltage | Socketable | -28°C ~ 65°C | Plug In, 8 Pin (Octal) | 135 ~ 300VAC | 240VAC | |
Macromatic Industrial Controls
|
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0.1 ~ 10s | - | Overvoltage, Undervoltage | Socketable | -28°C ~ 65°C | Plug In, 8 Pin (Octal) | 135 ~ 300VAC | 240VAC | |
Macromatic Industrial Controls
|
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0.5s | - | Overvoltage, Undervoltage | Socketable | -28°C ~ 65°C | Plug In, 8 Pin (Octal) | 135 ~ 300VAC | 240VAC | |
Siemens
|
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- | Automatic Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Screw Terminal | - | 24VAC/DC | |
Siemens
|
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- | Automatic Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Screw Terminal | - | 24VAC/DC | |
Siemens
|
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0.1 ~ 20s | Automatic Reset | Phase Loss, Phase Sequence, Overvoltage, Undervoltage | DIN Rail | -25°C ~ 60°C | Spring Terminal | 160 ~ 690VAC | 160 ~ 690VAC | |
Littelfuse Inc.
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0 ~ 999s | - | Multiple | Chassis Mount | -20°C ~ 70°C | Screw Terminal | 2 ~ 800A, 340 ~ 528VAC | 340 ~ 480VAC | |
|
Littelfuse Inc.
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- | Manual Reset, Test Button | Ground Fault | Chassis Mount, DIN Rail | -10°C ~ 60°C | Screw Terminal | - | 120VAC | |
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Littelfuse Inc.
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0.1 ~ 2.5s | CT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button | Ground Fault | Panel Mount | -40°C ~ 60°C | Screw Terminal | - | 24 ~ 48VDC | |
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Omron
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Omron
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Omron
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Omron
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Omron
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Omron
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Omron
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Omron
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Omron
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Omron
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Omron
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Omron
|
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- | - | Phase Loss | Socketable | -10°C ~ 50°C | Plug In, 8 Pin (Octal) | - | 200 ~ 220VAC | |
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Omron
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Omron
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TE Connectivity
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TE Connectivity
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- | - | - | - | - | - | - | - | |
Siemens
|
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Price and Stock
on Request |
- | Automatic Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Spring Terminal | - | 24VAC/DC | |
Siemens
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | Automatic Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Screw Terminal | - | 24 ~ 240VAC/DC | |
Siemens
|
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Price on request
Price and Stock
on Request |
- | Automatic Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Spring Terminal | - | 24 ~ 240VAC/DC | |
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Carlo Gavazzi
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on Request |
- | - | Ground Fault | DIN Rail | -25°C ~ 60°C | Screw Terminal | 300mA | 24 ~ 240VAC | |
Siemens
|
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Price on request
Price and Stock
on Request |
- | Automatic Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Spring Terminal | - | 24VAC/DC | |
Siemens
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | Automatic Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Spring Terminal | - | 24VAC/DC | |
|
TE Connectivity
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | - | - | - | - | - | - | - | |
Siemens
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | Automatic 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 | 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 | Overtemperature | DIN Rail | -25°C ~ 60°C | Spring Terminal | - | 24 ~ 240VAC/DC | |
Siemens
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | 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 |
- | Manual Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Screw Terminal | - | 24 ~ 240VAC/DC | |
|
Omron
|
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Price on request
Price and Stock
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0.3/0.8s | Manual Reset, Test Button | Ground Fault | Socketable | -10°C ~ 55°C | Plug In, 11 Pin (Octal) | 0.1/0.2A | 100/110VAC, 200/220VAC | |
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Carlo Gavazzi
|
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Price on request
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0 ~ 5s | Manual Reset, Test Button | Ground Fault | DIN Rail | -25°C ~ 60°C | Screw Terminal | 0.3 ~ 30A | 24 ~ 240VAC | |
Omron
|
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Price on request
Price and Stock
on Request |
- | Manual Reset, Test Button | Ground Fault | Socketable | -10°C ~ 55°C | Plug In, 11 Pin (Octal) | 0.1/0.2A | 100/110VAC, 200/220VAC | |
Siemens
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | Automatic Reset, Manual Reset | Overtemperature | DIN Rail | -25°C ~ 60°C | Screw Terminal | - | 24VAC/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 | - | 24VAC/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 | - | 24VAC/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 | - | 24VAC/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 | |
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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 | 100/110/120VAC | |
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Omron
|
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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 |
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