Operating mechanism of plastic shell type circuit breaker

The utility model particularly relates to a plastic shell type circuit breaker operating mechanism, which comprises an operating handle, a rocker arm, a jump fastener, an upper connecting rod, a lower connecting rod, a rotating shaft, a moving contact and an energy storage spring, the rocker arm can rotate around a G point, the operating handle is in linkage fit with the rocker arm for operating the rocker arm to rotate, and the jump fastener is hinged with the upper connecting rod through an A shaft. The upper connecting rod and the lower connecting rod are hinged on a B shaft, the lower connecting rod and the rotating shaft are hinged on a C shaft, the rotating shaft can rotate around a point O. The energy storage spring is connected between the rocker arm and the B shaft, and the moving contact is fixed on the rotating shaft. The utility model provides the plastic shell type circuit breaker operating mechanism with a larger output rotation angle, so that the safety is improved, and the breaking performance