Be used for electrified special kit of leakage current table that changes of arrester, including the toolbox, the toolbox includes upper cover and box body, and upper cover and box body are insulating material, all are equipped with the screw on upper cover and box body, and the screw of upper cover and the position of the screw on the box body are corresponding, are connected with insulating pillar between the screw of upper cover and the screw of box body, and insulating pillar is porcelain insulator or composite insulator, and insulating pillar both ends are equipped with the screw rod, the utility model discloses an instrument has been guaranteed the leakage current of an arrester table and changed the new operating type that can go on under electrified state, has avoided the power failure demand, the specialized tool complete set is placed, and the wiring is simple reliable, the portable installation, and labour saving and time saving can greatly improve work efficiency, combination formula insulation support, safety during better support personnel's operation.