Direct-current relay resistant to short-circuit current

A DC relay resistant to short-circuit current, comprising two stationary contact leading-out terminals, a straight sheet type movable spring and a push rod component, in which the movable spring is mounted on the push rod component so that movable contacts on two ends of the movable spring are in contact with stationary contacts on bottom ends of the two stationary contact leading-out terminals under an action of the push rod component, and a current flows in from one of the two stationary contact leading-out terminals and flows out of the other of the two stationary contact leading-out terminals via through the movable spring, wherein the movable contacts are respectively arranged outside of opposite sides of the upper magnets,

• wherein upper magnetizers arranged in a width direction of the movable spring are mounted above a preset position of the movable spring;
• lower magnetizers arranged in the width direction of the movable spring and of moving with the movable spring are mounted below the preset position of the movable spring;
• at least one through hole is provided in the movable spring at the preset position, so that the upper magnetizers and the lower magnetizers can approach one to another or come into contact with each other through the through hole;
• and at least two independent magnetically conductive loops are formed in the width direction of the movable spring by means of the upper magnetizers and the lower magnetizers;
• magnetic pole faces of the respective magnetically conductive loops at the through hole are increased such that when the movable spring has a large fault current, attraction force in a contact pressure direction is generated to resist an electro-dynamic repulsion force generated, due to the fault current between the movable spring and the stationary contact leading-out terminals.