A locking system for the trigger component of an electrical device is disclosed. The electrical device has an electrical switch housing, and an electrical switch unit is disposed in the electrical switch housing. The trigger component includes a trigger member configured to move relative to the housing; an actuator member operatively connected to the trigger member, and movable in a first direction relative to the housing from an OFF position to an ON position in response to the movement of the trigger member relative to the housing, wherein at the OFF position, the electrical switch is operatively turned off by the actuator, and at the ON position, the electrical switch is operatively turned on by the actuator and the actuator member is movable relative to the housing from the ON positionto the OFF position in the second direction; and an activation locking mechanism including a first locking member mounted in the vicinity of the trigger member and a second locking member mounted inthe vicinity of the housing.