Capacitor cabinet switch

The utility model provides a capacitor cabinet switch, which comprises a knob arranged on the left end face of a capacitor cabinet door and provided with a threaded hole along the axis of the knob; the middle seat is arranged on the right end face of the capacitor cabinet door, a middle piece is arranged in the middle seat in a sliding mode, and the left end of the middle piece penetrates through the middle seat and the capacitor cabinet door to be in threaded connection with the threaded hole, so that the middle piece slides left and right when the rotary knob rotates; the tail seat is arranged on the right end face of the middle seat, a filling piece is arranged in the tail seat, so that two independent switch spaces are formed on the front side and the rear side in the middle seat, and switch parts are arranged in the two switch spaces respectively; wherein the switch part is connected to the middleware, so that the switch part has a starting state or a closing state along with the left-right sliding of th