Direct current contactor

The utility model belongs to the technical field of direct-current contactors, and particularly relates to a direct-current contactor, which comprises an outer cover, a base assembly arranged on the outer cover, a supporting assembly arranged on the outer cover, an electromagnetic device arranged on the supporting assembly, a movable iron core arranged on the supporting assembly, a cross pan head screw arranged on the movable iron core, and a movable iron core arranged on the cross pan head screw. And an M3 locknut is arranged on the cross pan head screw. According to the utility model, through the arrangement of the insertion sheet and the bottom plate, the DC contactor can be installed and used, the arc extinguishing operation of the DC contactor can be completed under the action of the structures such as the moving contact assembly, the cross pan head screw and the reaction spring, the wiring board can be installed and used through the action of the countersunk head screw, and the arc extinguishing operati