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

1981-02-19

1982-03-23

Little, Willis

Electricity: circuit makers and breakers

Liquid contact

Time delay

200324, H01H 716

Patent

active

043214401

ABSTRACT:
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 establish a second, greater contact separation distance when the trip mechanism is released.

REFERENCES:
patent: 2459629 (1949-01-01), Dorfman et al.
patent: 3134880 (1964-05-01), Murphy
patent: 3849751 (1974-11-01), Link et al.

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