Two piece cradle latch, handle barrier locking insert and...

H - Electricity – 01 – H

Patent

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H01H 9/22 (2006.01) H01H 3/46 (2006.01) H01H 9/20 (2006.01) H01H 21/04 (2006.01) H01H 21/06 (2006.01) H01H 23/00 (2006.01) H01H 71/00 (2006.01) H01H 71/02 (2006.01) H01H 71/62 (2006.01) H01H 73/38 (2006.01) H01H 75/00 (2006.01) H01H 83/00 (2006.01)

Patent

CA 2013535

TWO PIECE CRADLE LATCH, HANDLE BARRIER LOCKING INSERT AND COVER INTERLOCK FOR CIRCUIT BREAKER Abstract of the Disclosure A molded case circuit breaker is provided with a two piece cradle assembly having a cradle por- tion and a heat-treated portion. The heat-treated portion forms the latch and reset surfaces. The cradle portion is integrally formed from a pair of spaced apart cradle-shaped arms joined together by a connecting portion. The heat treated portion is se- curely fastened to the connecting portion to form the two piece cradle assembly. A hold down slidably car- ries a handle barrier with respect to the cover and closes a centrally located aperture in the cover for all handle positions. The handle barrier prevents arc products resulting from a separation of the main contacts from escaping through the centrally located aperture in the cover. Stops are provided in one or both directions to prevent misalignment of the handle barrier with respect to the operating handle. A cover interlock is also provided to prevent the cover from being removed when the circuit breaker is in an "on" position. The cover interlock can either be molded separately or integrally molded with the handle barrier hold down.

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