Rotary double-breakpoint device of circuit breaker

The rotary double-breakpoint device comprises a fixed disc, a movable contact mechanism, a central rotating shaft and a movable contact elastic positioning mechanism, a movable channel is arranged in the circumferential direction of the fixed disc, the central rotating shaft is perpendicular to one side face of the fixed disc and is arranged in the center of the fixed disc, and the movable contact mechanism is arranged in the movable channel through the central rotating shaft and is rotationally connected with the movable channel. Two ends of the moving contact mechanism are arranged outside the fixed disc, the moving contact elastic positioning mechanism is arranged on the fixed disc, the moving contact elastic positioning mechanism is in butt joint with the moving contact mechanism, and the moving contact elastic positioning mechanism is arranged to control the moving contact mechanism, so that the moving contact mechanism is smoothly positioned at a starting position and a tail end position, and the breaki