Automatic change relay protection

The utility model discloses an automatic change relay protection, include relay, relay seat, protective housing, connecting seat, first spring, press clamp plate, rubber protection layer, mounting hole, pivot, rotation cylinder, second spring, fixing base and locking board, the relay is installed on relay seat, the utility model discloses novel structure presses pressing plate contact relay top onthe protective housing upper plate, rubber protection layer and relay, relay seat contact on the protective housing lateral wall, the mounting hole mid -mounting has the pivot, the pivot with cylinder sliding connection rotates, rotate locking board terminal surface one side under relay seat, will rotate the locking board through tensile second spring and press down and on the terminal surface, make the relay use under rugged environment under the relay seat, long service life can reach dustproof purpose, the effectual adverse effect of dust to the relay that has avoided has prevented the long -time circumstances of