Patent ID: 7330091

Claim:
An electronic type protective relay, comprising: an insulating shell having a pair of normally open connection pins and a pair of normally closed connection pins; a braking spring; a tripping rod elastically pivoted in the inner part of the insulating shell and selectively conducting the two pairs of connection pins, the tripping rod comprising a control magnetic core, and a braking part installed on one side of the tripping rod for receiving one end of the braking spring; a magnetic-force device comprising a tripping electromagnet installed at one end of the control magnetic core, a reset electromagnet installed at another end of the control magnetic core, and a permanent magnet installed between the tripping electromagnet and the reset electromagnet; and an operation device comprising an auxiliary rod installed in the insulating shell and located on one side of the tripping rod, and an operation rod installed between the tripping rod and the auxiliary rod; wherein the operation rod is rotatably set at four locations and in cooperation with the auxiliary rod to stop or reset the circuit of the two pairs of connection pins.