Hermetically sealed releasing relay for fault current circuit- breaker

摘要

The earth-leakage circuit-breaker has the trigger (release) relay stage in a housing 10 that has a yoke 8 with a pair of poles 5,6. A coil is wound 7 onto one pole and the other provides a location for the armature 2 and a spring 11 element 1. A permanent magnet 9 is mounted on the yoke. An actuator lever 3 that operates an external switch has a support pin that passes through a hole 13 in the housing wall and this has an elastic sealing insert 4.