Circuit breaker with improved impact resistance

Electricity: circuit makers and breakers – Multiple circuit control – Operating means

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Details

200553, 200339, H01H 300, H01H 2100

Patent

active

058082492

ABSTRACT:
The present invention provides a circuit breaker assembly having a base, cover, and switch handle adapted to withstand an external force applied to a lever of the switch handle. During normal operation the handle rotates on small-diameter pivots in elongated bearing slots. Under abnormal conditions that occur when the lever of the switch handle is inadvertently struck, such as when the circuit breaker is dropped on the lever of the switch handle, the pivots slide in the elongated bearing slots. The force is borne by large-diameter hubs which come in contact with mating bearing surfaces. Thus, the pivots are not shorn off during such incidents, which would damage the circuit breaker.

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