Electromagnetic leakage switch

The utility model provides an electromagnetic leakage switch, which comprises a leakage induce unit, a voltage-multiplying rectifying unit, a positive feedback drive unit and a switch unit, wherein the leakage induce unit is used for inducing a leakage signal, converting the leakage signal into a voltage signal, and transmitting the voltage signal to the voltage-multiplying rectifying unit so as to obtain at least one time of DC voltage after rectifying and filtering to be inputted into the positive feedback drive unit, and the positive feedback drive unit is used for outputting the excited largest circuit current to the switch unit to cut off an electric power supply of a protected circuit. Therefore, the electromagnetic leakage switch effectively avoids electrical shock hazards caused by electricity leakage, and has simple structure, low cost and high power system interference resistance.