What is Auxiliary Contact?

Definition

A small secondary contact on a contactor or relay that provides status feedback or interlocking signals. Auxiliary contacts indicate whether the main contactor is open or closed and are used in control logic circuits.

Related Terms

Contactor

An electrically controlled switch used to make or break power circuits in indust...

Relay

An electrically operated switch that uses a coil and contacts to control one cir...

Interlock

A safety mechanism that prevents equipment from operating unless specific condit...

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