JRV-161 JVS Auxiliary Relay

JVS Relay - JVS make Auxiliary Relays JRV-161The auxiliary contact is often used in a relay logic circuit, or for some other part of the motor control scheme, typically switching 120 Volt AC power instead of the motor voltage. ... They are not fuses; that is, it is not their function to burn open and directly break the circuit as a fuse is designed to do.It's a way to open or close a circuit breaker. There are open and close coils in large, multiphase breakers. These can be activated by applying auxiliary voltage to them via the auxiliary relay. This allows control over the breaker remotely or automatically to apply or remove power from a load.