The circuit breaking safety lock includes a slider, a first locking piece, a first locking shaft, a first pressure spring and a first lifting mechanism, wherein the first locking piece is fixedly connected with the slider, the first locking shaft is locked with the first locking piece, the first pressure spring is used for moving the first locking shaft along a direction towards the slider, and the first lifting mechanism is used for moving the first locking shaft along a direction away from the slider. The double-power switch includes a housing, a first position electrode, a second position electrode, a movable electrode, a bi-position lock and the circuit breaking safety lock, wherein the movable electrode is fixedly connected with the slider and moves between the first position electrode and the second position electrode with the slider.