Basic switch module for a multipole electrical motor circuit breaker, and a motor circuit breaker comprising said basic switch modules

摘要

The basic switch module according to the invention makes it possible to construct a multipole electrical motor circuit breaker comprising a circuit breaker base (12), arranged to accommodate several basic switch modules (30), an operating mechanism (25), a top section (46), and a handle on a square shaft. The same basic switch modules may be used for several different types of circuit breaker, whereby the estimated number of switch modules to be produced by the manufacture is so large that the modules may be made highly automated production.