Circuit breaker with arc chamber screen

Details Circuit breaker with arc chamber screen Circuit breaker with arc chamber screen

1975-03-28

1976-12-14

Harris, George

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148C, 335201, H01H 930, H01H 3300

Patent

active

039977463

ABSTRACT:
Disclosed is a molded case type magnetic circuit breaker having improved performance and an increased current rating. A corrosion and temperature resistant stainless steel wire screen having specific wire and mesh opening sizes overlies a novel exhaust gas baffle arrangement to cool and disperse arc chamber gases venting from the breaker. Flashover during high current switching, due to conduction through the exhaust gas plasma, is eliminated. Also disclosed is a novel arc chamber construction for the circuit breaker and a marine baffle for adapting the breaker to use in potentially explosive atmospheres.

REFERENCES:
patent: 2988622 (1961-06-01), Petermichl et al.
patent: 3582966 (1971-06-01), Strobel
patent: 3780249 (1963-12-01), Harper

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