Short circuit current-resistant and arc-extinguishing DC relay

A DC relay for anti-short circuit current and arc extinction, comprising:

• two static contact leading-out ends;
• a pushing rod assembly;
• a movable contact piece in a straight sheet type, the movable contact piece being mounted in the pushing rod assembly such that movable contacts on two ends of the movable contact piece cooperate with two static contacts on bottom ends of the two static contact leading-out ends under the action of the pushing rod assembly;
• a fixed upper yoke, the fixed upper yoke is fixed above a position between the two movable contacts of the movable contact piece;
• a follow-up upper yoke, the follow-up upper yoke is fixed on the pushing rod assembly, above a position between the two movable contacts of the movable contact piece;
• a lower armature;
• the lower armature is fixed on a bottom end face of the movable contact piece and at a position between the two movable contacts;
• wherein the fixed upper yoke, the follow-up upper yoke and the lower armature are arranged in a width direction of the movable contact piece, and when the movable contacts and the static contacts are closed, the lower armature is respectively close to or in contact with the fixed upper yoke and the follow-up upper yoke, so as to form two magnetic conductive loops in the width direction of the movable contact piece, so that when the movable contact piece flows a large fault current, the two magnetic conductive loops generate an electromagnetic suction force for keeping the movable contacts and the static contacts closed, to resist an electric repulsion force generated due to the fault current between the movable contact piece and the static contact leading-out ends.