Electrical switching apparatus and trip assembly therefor

摘要

A trip assembly is for an electrical switching apparatus. The electrical switching apparatus includes a housing, separable contacts enclosed by the housing, and an operating mechanism for opening and closing the separable contacts. The operating mechanism includes a poleshaft and a trip D-shaft. The trip assembly comprises: a yoke assembly comprising a yoke member and a trip pin coupled to the yoke member, the yoke member being structured to be coupled to the poleshaft; and a link assembly comprising a linking member, the linking member being structured to cooperate with each of the trip pin and the trip D-shaft. When the yoke member moves in response to a trip condition, the linking member is structured to transmit movement of the yoke member into movement of the trip D-shaft.

主权项

1. A trip assembly for an electrical switching apparatus, said electrical switching apparatus comprising a housing, separable contacts enclosed by said housing, and an operating mechanism for opening and closing said separable contacts, said operating mechanism comprising a poleshaft and a trip D-shaft, said trip assembly comprising:
a yoke assembly comprising a yoke member and a trip pin coupled to said yoke member, said yoke member being structured to be coupled to said poleshaft; and a link assembly comprising a linking member, said linking member being structured to cooperate with each of said trip pin and said trip D-shaft, wherein, when said yoke member moves in response to a trip condition, said linking member is structured to transmit movement of said yoke member into movement of said trip D-shaft; wherein said link assembly further comprises a cam button structured to be coupled to said housing; and wherein, when said yoke member moves in response to a trip condition, said linking member is structured to slide on said cam button in order to move away from said trip pin.