Molded case circuit breaker with electro-magnetic shielding...

Details Molded case circuit breaker with electro-magnetic shielding... Molded case circuit breaker with electro-magnetic shielding...

H - Electricity

01

H

306/246

H01H 9/34 (2006.01) H01H 9/44 (2006.01) H01H 71/02 (2006.01) H01H 9/46 (2006.01) H01H 73/18 (2006.01)

Patent

CA 1046116

ABSTRACT OF THE DISCLOSURE A molded case circuit breaker of relatively narrow width is afforded dramatically increased current interrupting capacity by providing shielding against the electromagnetic field developed as the result of short circuits flowing through a contiguous circuit breaker. Additionally, an arc runner is added to cooperate with an improved arch chute construction in controlling to extinction the arc developed incident to an interruption. The case is also vented to relieve the internal gas pressure developed during arcing.

243912

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