Photovoltaic multifunctional circuit breaker

The utility model relates to the technical field of photovoltaic circuit breaker equipment, in particular to a photovoltaic multifunctional circuit breaker, which is used for a distributed photovoltaic grid-connected power generation system and comprises a circuit breaker body and a voltage mutual inductance module arranged in the circuit breaker body, and the upper end and the lower end of the circuit breaker body are respectively provided with a wire inlet terminal and a wire outlet terminal. The voltage mutual inductance module comprises a microprocessor, a digital-to-analog conversion circuit, a voltage transformer, a remote sensing communication unit and an RS485 communication unit, the high-voltage side of the voltage transformer is connected with the wire inlet terminal, and the low-voltage side of the voltage transformer is electrically connected with the microprocessor through the digital-to-analog conversion circuit; and the remote sensing communication unit and the RS485 communication unit are elec