to be inserted therein may be provided in the terminal 14 the terminal 14 and the connector 13 may be integrally formed here the terminal 14 and the connector 13 may be referred to as a terminal unit the holders 12 are provided in both sides of the mover 11 and assembled to the connector 13 through a pin to adjust a position of the mover 11 a rotational shaft 17 may be inserted to penetrate through the mover 11 such that it is rotatable in a state of being maintained to be in contact with the connector 13 provided in the terminal 14 in a normal state a movable contactor 16 of the mover 11 and a fixed contactor of a stator not shown connected to the terminal unit supplying power are in contact a current supplied from the terminal unit at a power source side may flow to the terminal 14 from the stator through the mover 11 and the connector 13 when an overcurrent or a fault current is generated the mover 11 is rotated about the rotational shaft 17 by being centered thereon and thus the movable contactor and the fixed contactor may be separated thus the current flowing from the terminal unit at the power source side to the terminal 14 may be interrupted as the structure in which the mover 11 is maintained to be in contact with the connector 13 and the structure in which the mover 11 is rotated.