Power capacitor over-current protector

The utility model relates to a power capacitor over-current protector which can be used for solving the problem of low action precision in the prior art. The key point of the technical scheme is that the power capacitor over-current protector is powered by a power supply, is connected with a capacitor circuit in an alternating-current power supply circuit and comprises a processor, an indicating circuit, a contactor, a setting resistor and a three-phase mutual inductance circuit, wherein output ends of the three-phase mutual inductance circuit are connected with the processor, one end of the setting resistor is grounded and the other end of the setting resistor is connected with the processor, one end of a coil of the contactor is connected with the processor and the other end of the contactor coil is grounded, a contact of the contactor is connected in series with the capacitor circuit, and the indicating circuit is connected with the processor. According to the utility model, a high-speed embedded single ch