Circuit breaker with external accessory mounting means

Details Circuit breaker with external accessory mounting means Circuit breaker with external accessory mounting means

H - Electricity

01

H

306/284

H01H 9/02 (2006.01) H01H 71/46 (2006.01) H01H 83/20 (2006.01)

Patent

CA 1109910

CIRCUIT BREAKER WITH EXTERNAL ACCESSORY MOUNTING MEANS ABSTRACT OF THE DISCLOSURE A multi-pole circuit breaker is provided with a molded insulating housing defining an internal chamber wherein the mechanical trip free contact operating mechanism is disposed, an external recess wherein an auxiliary switch unit is removably mounted, and an ex- ternal cavity wherein a shunt trip assembly is removably mounted. The switch unit includes one switch operable by the mechanism as it opens and closes the circuit breaker contacts and a second switch operated by the latchable cradle of the mechanism to indicate auto- matic tripping. The shunt trip assembly includes an electromagnet having an operating member which engages the cradle latch to release the latter.

327108

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