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

1989-03-30

1991-04-02

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147R, 335 16, H01H 3302

Patent

active

050048783

ABSTRACT:
A molded case circuit breaker having a pair of movable contact arms arranged within a single pole utilizes a shunt clip between the movable contact arms to insure electrical continuity between the contact arms and the support base during intense short circuit interruption. A compression spring-driven camming arrangement insures good electrical connection between the circuit breaker contacts under steady quiescent operating conditions while preventing reclosing of the contacts during short circuit interruption.

REFERENCES:
patent: 4086460 (1978-04-01), Gillette
patent: 4245203 (1981-01-01), Wafer et al.
patent: 4642431 (1987-02-01), Tedesco et al.
patent: 4695690 (1987-09-01), Banfi
patent: 4731921 (1988-03-01), Ciarcia et al.
patent: 4733033 (1988-03-01), Morris et al.
patent: 4931603 (1990-06-01), Castonguay et al.

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