Intelligent controller used for universal circuit breaker

The invention relates to an intelligent controller used for a universal circuit breaker. The intelligent controller comprises a control processor and a power supply circuit, wherein the power supply circuit is used for providing a working voltage for the control processor and connected with the control processor. The control processor is further connected with an USB communication circuit used for being connected with an upper computer through communication, the input end of the control processor is connected with a ground protection processing circuit and a four-phase current processing circuit, the output end of the control processor is connected with a trip circuit, a signal contact output circuit and a display circuit, and the control processor controls the trip circuit to conduct trip driving according to a working current value input by the four-phase current processing circuit or a ground protection current value input by the ground protection processing circuit and conducts status indication through t