Electric circuit breaker arc chute composition

Details Electric circuit breaker arc chute composition Electric circuit breaker arc chute composition

H - Electricity

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H

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H01H 33/10 (2006.01) H01H 9/34 (2006.01) H01H 73/18 (2006.01)

Patent

CA 1318339

41PR-6541 ELECTRIC CIRCUIT BREAKER ARC CHUTE COMPOSITION ABSTRACT OF THE DISCLOSURE A current limiting circuit breaker having a pair of separable contacts closely spaced for electrodynamic repulsion upon the occurrence of a short circuit over- load condition utilizes an arc chute to cool and ex- tinguish the arc that occurs when the contacts become separated. The arc chute contains a plurality of metal arc plates supported by side plates which also assist in cooling and extinguishing the arc. The side plates are formed from a three-layer configuration wherein the two outer layers have excellent arc ex- tinguishing properties while the inner layer has good mechanical support strength.

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