Standby power switching circuit applied to intelligent power distribution circuit breaker

The utility model relates to the technical field of charging, discloses a standby power switching circuit applied to an intelligent power distribution circuit breaker, and adopts the technical scheme that the standby power switching circuit comprises a comparator positive end input circuit, a comparator negative end input circuit, a comparator output circuit, a power supply input circuit and a comparator. The positive end input circuit of the comparator is connected with a pin 3 + IN of the comparator and is used for comparing an input logic voltage of the comparator with a negative end voltage; and the negative end input circuit of the comparator is connected with a pin 4-IN of the comparator, and is used for providing a logic voltage as a reference for the comparator and comparing the logic voltage with the positive end voltage. According to the utility model, the local standby power switching function of the intelligent power distribution circuit breaker is realized, the problem of supplying power to the w