Circuit breaker

Details Circuit breaker Circuit breaker

H - Electricity

01

H

306/188

H01H 73/48 (2006.01) H01H 73/50 (2006.01)

Patent

CA 1078438

ABSTRACT OF THE DISCLOSURE A circuit breaker has a bistable snap-acting mechanism including a bimetallic arm which renders the circuit breaker capable of actuation by either ambient temperature changes or temperature changes generated internally, as by an excessive electric current, An electromagnetic arrangement enables essentially instantaneous actuation in response to an electric current of predetermined amplitude greater than the excessive current which otherwise might actuate the circuit breaker thermally. An actuating lever assembly includes an actuating lever coupled to a link which is normally latched and is un- latched in response to movement of the bimetallic arm, and enables manual actuation, as well as manual reset of the circuit breaker.

281244

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