ELECTROMAGNETIC POLARISED SWITCH Russian patent published in 2014 - IPC H01H51/00 

FIELD: electricity.

SUBSTANCE: invention relates to the field of electrical engineering and is intended for automation systems of explosion-hazard plants exposed to external shock and vibration loads. The electromagnetic polarised switch includes magnetic circuits with windings, rotary armature located on an axis between magnetic circuits, permanent magnets fixed at the ends of magnetic circuits, and located on axis a bridging piece with contacts around it. The rotary armature is designed as a frame with opening enveloping permanent magnets along the whole perimeter of their cross section. The air gap between a surface of permanent magnets and internal surface of the armature openings can be made, at least, from external surface of magnets with decrease towards their poles.

EFFECT: improvement of stability to shock and vibration loads and expansion of scope of application.

2 cl, 2 dwg