LOW-VOLTAGE VACUUM CONTACTOR Russian patent published in 2009 - IPC H01H33/666 

FIELD: electrics.

SUBSTANCE: invention concerns low-voltage and high-voltage electric devices and can be applied in electric chains for remote control of electric aggregates and networks. Effect is achieved by deactivation spring and lever stop disconnection and reposition in optimum location. For that effect, vacuum contactor including mainly three vacuum arc blowout chutes, electric magnet, case, sealing lever with electric magnet armature, sealing lever axle, yoke, disconnection spring, lever arrester and auxiliary contact array with button, is additionally equipped with stop rod mounted on the lever arm shorter than lever arm carrying disconnection spring. The rod passes through a hole in lever and carries lever stop mounted on thread and fixated by nut lock at one rod end, the other rod end fixated against case. In addition, a metal lathe is attached to sealing lever at the lever stop side and has a hole coaxial to lever hole, for stop rod positioning, while lever stop rests against the metal lathe in disconnection state.

EFFECT: enhanced reliability and life time of contactor.

2 cl, 2 dwg