CONTACT SYSTEM Russian patent published in 2019 - IPC H01H1/42 

FIELD: instrument engineering.

SUBSTANCE: invention relates to the field of instrument making, in particular to automation devices, which can be used for switching of electric circuits of technical objects of critical purpose. Contact system comprises a housing made of non-magnetic material, which isolates the internal volume of the contact system, movable elastic contacts placed in the housing, fixed contacts, a rotary crossover. Movable resilient contacts are S-shaped with a rounded part at the end, enclosing the fixed contact and pressed to the outer cylindrical surface of the bypass device, equipped in the zone of interaction with the elastic contacts of the insulator, where for each movable resilient contact recess is made, which is matched with rounded part of movable resilient contact in initial or switched state of contact system. Breaker is equipped with permanent magnets of alternating polarity, which are located diametrically and connected to the circular magnetic core, interacting with similar additional permanent magnets connected by an additional annular magnetic conductor arranged on the rotary bushing installed outside on the axial protrusion of the housing. Turn angle of rotary bushing exceeds the angle of rotation of the recess, and the angular width of the magnets is not less than half the difference between the angle of rotation of the rotary bushing and the angle of rotation of the crossover.

EFFECT: higher reliability of actuation at wider field of use.

3 cl, 5 dwg