Molded case circuit breaker having improved arc resistant proper

Details Molded case circuit breaker having improved arc resistant proper Molded case circuit breaker having improved arc resistant proper

1982-08-16

1984-11-20

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147R, H01H 3304, H01H 930

Patent

active

044840454

ABSTRACT:
Molded case circuit breakers having increased short circuit current ratings contain a dual contact blade arm assembly and an arc shield wherein the operating mechanism is shielded from the arc blast which occurs during contact arcing. The arc blast shield consists of a trifurcated barrier interposed between the circuit breaker operating mechanism and the arc chute without interfering with the contact arm motion.

REFERENCES:
patent: 3270170 (1966-08-01), Fehrenbach et al.
patent: 3506799 (1970-04-01), Ellsworth et al.
patent: 3564176 (1971-02-01), Fechant
patent: 4011420 (1977-03-01), Heft

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