Processing unit for electro-mechanical circuit breaker in distribution network, has spring pressing plunger, where unit is designed to charge coil with signal current for producing vibrations with existence of acoustic signal command

摘要

The unit has a holding member (4) i.e. magnet, designed, such that a state change of a plunger (2) from a rest position to an activated position is caused during exceeding of minimum coil magnetic field. A spring (3) presses the plunger by spring force in direction of the activated position of the plunger during the state change of the plunger, where the unit is designed to charge a coil (5) with a signal current for producing audible vibrations with existence of acoustic signal command for an acoustic feedback.