AC motor starting up overcurrent protector

The utility model discloses a AC motor starting up overcurrent protector, including resistance R5, relay K, diode D2 and chip IC1, electric capacity C1, resistance R2, button S, chip IC1's pin 2, chip IC1's pin 4 and 220V alternating current are connected to resistance R5's one end, and diode D1's positive pole and motor A, motor A's other end connection electric capacity C2, diode D3's negative pole, buzzer B and relay K's contact K -1 is connected to resistance R5's the other end. The utility model discloses AC motor starting up overcurrent protector circuit structure is simple, components and parts are few, uses relay and optical coupler as time delay starting protection component, can effectively protect the motor not receive the influence of start overcurrent to set up the acousto -optic warning module in the circuit, consequently had convenient to use, stable performance and advantage with low costs.