ELECTRICAL SWITCHING APPARATUS AND POLE SHAFT CATCH ASSEMBLY THEREFOR

摘要

A pole shaft catch assembly is for an electrical switching apparatus, such as a circuit breaker. The circuit breaker 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 pole shaft pivotably coupled to the housing and a yoke assembly coupled to the pole shaft. The pole shaft catch assembly includes a catch arm. The catch arm moves between an engaged position in which the catch arm engages the yoke assembly to restrict movement of the yoke assembly and the pole shaft, and a disengaged position in which the catch arm disengages the yoke assembly. A biasing element biases the catch arm toward the disengaged position. A trigger translates movement of the yoke assembly into movement of the catch arm.

主权项

1. A pole shaft catch assembly for an electrical switching apparatus, said electrical apparatus comprising a housing, separable contacts enclosed by the housing, and an operating mechanism for opening and closing said separable contacts, said operating mechanism including a pole shaft pivotably coupled to the housing and a yoke assembly coupled to said pole shaft, said pole shaft catch assembly comprising:
a catch arm structured to cooperate with said yoke assembly, said catch arm moving between an engaged position in which said catch arm engages said yoke assembly to restrict movement of said yoke assembly and said pole shaft, and a disengaged position in which said catch arm disengages said yoke assembly; a biasing element biasing said catch arm toward said disengaged position; and a trigger cooperating with said catch arm, said trigger being structured to translate movement of said yoke assembly into movement of said catch arm.