The operating mechanism of the breaker's electric cabinet uses two springs to realize the closing-opening function, and the energy of the closing spring is stored by the operating handle or the motor until it is indicated that the closing spring is in locked status (the energy spring is stored). The vacuum circuit breaker can be opened manually or electrically. It has the automatic reclosing function. When the energy of the mechanism is stored and the mechanism is closed, the energy can be re-stored by manually or electrically, and later, the opening-closing-opening operation can be achieved without storing energy.