Electromagnet low-voltage protection circuit

The utility model discloses an electromagnet low-voltage protection circuit which comprises an optical coupler, a second diode, a third diode, a first resistor, a second resistor, a third resistor, afourth resistor, a first capacitor and a first bidirectional silicon controlled rectifier. The other end of the second diode is connected with one end of the third triode, the other end of the fifth switch is connected with the second voltage input end, the other end of the electromagnet is simultaneously connected with the other end of the first diode, the second main electrode of the first bidirectional silicon controlled rectifier and the other end of the fourth resistor, and the gate electrode of the first bidirectional silicon controlled rectifier is connected with the second output end of the optical coupler. According to the utility model, when the power supply voltage is at a lower value, the circuit breaker electric electromagnet refusal is realized, and the operation is safe andreliable. 本实用新型公开了一种电磁铁低电压