Abstract: In view of problems that there is less protection functions, data upload failure, big error, and no fault recorders existed in current mine-used low-voltage feed switch, the paper proposed a reform scheme by use of a new type of comprehensive protector, namely replacing built-in integrated protector of low-voltage feed switch, reconstructing accessories and wiring of feed switch, so as to ensure accurate, real-time uploading of power monitoring data and realize functions of remote operations such as opening/closing operation, reset, leakage and others. And it meets demands of power monitoring and management system.