Circuit breaker with extended contact separation after trip

Details Circuit breaker with extended contact separation after trip Circuit breaker with extended contact separation after trip

H - Electricity

01

H

306/289

H01H 75/12 (2006.01)

Patent

CA 1144964

11 49,325 ABSTRACT OF THE DISCLOSURE A circuit breaker having separable contacts and a releasable trip mechanism operable upon overcurrent conditions to automatically separate the contacts includes a moveable arm stop connected to the releasable mechanism for limiting travel of the moveable contact in the open circuit position. The moveable arm stop includes a cam portion having an extended surface to limit travel of the moveable contact and establish a first contact separation distance when the trip mechanism is latched, and a flat surface limiting travel of the moveable contact to estab- lish a second, greater contact separation distance when the trip mechanism is released.

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