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NEMA Overload Relays

Available16 products

NEMA overload relays are made to standards designated by the National Electric Manufacturers Association (NEMA). Also known as NEMA overloads, they are electromagnetic switches that send signals to contactors to de-energize circuits when excessive current or phase failure is detected, protecting motors, machinery, equipment, and high-voltage systems from overheating and being damaged.

NEMA magnetic overload relays combine with compatible contactors to create motor starter assemblies.

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NEMA Electronic Overload Relays

NEMA Electronic Overload Relays
These NEMA electronic overload relays trigger contactors to break electrical connections with downstream equipment once the current reaches a pre-determined range of full-load amperage. They have adjustable current settings and use semiconductors to monitor for overload conditions and trip once the current exceeds that set point. Electronic overload relays turn circuits on and off faster, are more accurate, and have longer service lives than thermal overload relays.

Relay Mounting Style: Direct To Contactor

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Relay Mounting Style: Separately Mounted

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