Hilfsschalter für einen Leistungsschalter

An integrated protection unit which includes overcurrent protection along with auxiliary accessory function, contains an access cover for the selected accessory components to allow field installation of the accessory components prior to connecting the integrated protection unit within an electric circuit. One such accessory unit comprises a field-installable auxiliary switch which is installed in the circuit breaker cover. When the circuit breaker is turned on or off, the auxiliary switch unit interacts with the circuit breaker operating mechanism moulded plastic crossbar to provide an output signal indicative of the "ON-OFF" condition of the circuit breaker contacts. The auxiliary switch unit enclosure contains strain relief integrally-formed to protect the auxiliary switch.