Circuit breaker comprising a control assembly and interrupting chamber and method of assembly

摘要

A circuit breaker including a control assembly having a driving and a driven splined shafts and a pair of arcing contacts movable by the control assembly. A synchronization assembly is provided for synchronizing the two splined shafts and includes two levers each of which is provided with a splined ring that co-operates with one of the splined shafts. One of the splined rings has a number of meshing elements which is different than a number of meshing elements on the splined shaft with which it co-operates and an adapter is seated between the one of the splined rings and the splined shaft with which it co-operates.