Load circuit breaker, has coupling unit including transmission slider, and spring i.e. opened spring, arranged at bolts, where one of bolts of transmission slider is arranged on load-circuit breaker-support

摘要

The breaker (1) has a cam disk (16) mechanically coupled with a circuit breaker movable contact (8) that is utilized for moving a movable contact terminal bolt (12) of a vacuum switching tube (13). A coupling unit includes a transmission slider (14) that is coupled with the movable contact terminal bolt and linearly guided to a load-circuit breaker-support (15), and the cam disk is made up of an isolated material. The transmission slider includes bolts (18, 19), and a spring (20) i.e. opened spring, is arranged at the bolts, where one of the bolts is arranged on the breaker-support.