Molded case circuit breaker cover insert

Details Molded case circuit breaker cover insert Molded case circuit breaker cover insert

H - Electricity

01

H

H01H 33/72 (2006.01) H01H 71/02 (2006.01) H01H 3/60 (2006.01)

Patent

CA 2049263

41PR-6855 MOLDED CASE CIRCUIT BREAKER COVER INSERT ABSTRACT OF THE DISCLOSURE A molded case circuit breaker of the type using electrodynamic repulsion to separate the circuit breaker con- tacts under intense overcurrent conditions also includes an arc chute arrangement for cooling and quenching the arc that occurs during such contact separation. A plastic cover insert added to the interior of the circuit breaker cover multi-functionally retains the arc chute within the circuit breaker case while providing clearance for the circuit breaker operating handle shutter. A resilient pad on the top surface of the cover insert receives the circuit breaker operating handle skirt upon contact separation and dampens the energy imparted to the operating handle and to the circuit breaker cover.

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