Control circuit for multifunctional protection socket

The utility model discloses a control circuit for a multifunction protection socket, which comprises a signal processing chip IC, a zero sequence mutual inductor L1, a controlled silicon VS1, a tripping coil L5, a rectification circuit, a test circuit, an indicating circuit, a varistor RV1 and other resistor-capacitor components; and the control circuit is characterized in that the control circuit also includes a current mutual inductor L2, a reset coil L4, a controlled silicon VS2, a short-circuited coil L3, a temperature switch ST and a varistor RV2. The control circuit has the advantages of leakage protection, overloading protection, overheat protection, short circuit protection, the over voltages protection and lightning protection; therefore, the protection range of the control circuit is wide, so as to effectively and rapidly protect life and property security of people.