Simulated training system of load breaker

The invention relates to a simulated training system of a load breaker, comprising a three-phase four-wire program control voltage source, wherein the output of the voltage source is connected with a leakage current, an overload protection device, an isolation transformer, ammeters of all phases and an isolation switch in turn. The output end of the isolation switch is connected with a simulated load circuit, the simulated load circuit comprises a current relay controller and a three-phase four-wire load breaker, and the input end of the three-phase four-wire load breaker is correspondingly connected with the isolation switch. By using the system, the requirement on the training and the verification of related equipment can be met, trainees can study the use of the related equipment in a realer environment, and acquaint operation processes and protection, thereby facilitating system verification work and training assessment.