Molded case circuit breaker movable contact arm arrangement

Details Molded case circuit breaker movable contact arm arrangement Molded case circuit breaker movable contact arm arrangement

1989-03-23

1990-06-05

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147R, 335 16, H01H 3302

Patent

active

049316036

ABSTRACT:
A molded case circuit breaker movable contact arm electrically connects with the circuit breaker load terminal without requiring a flexible electrical conducting braid. The contact arm is pivotally arranged within a contact arm support to which the load terminal lug is attached. The contact arm pivot pin is supported on a pair of parallel support posts extending from the contact arm support and a pair of bifurcated shunt plates are positioned on the pivot pin, one on each side of the contact arm to promote good electric transport between the contact arm and the support posts during short circuit conditions without interfering with the rotational movement of the contact arm.

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