product introduction:
dc circuit breaker is the core equipment of traction power supply system for rail transit . at present, the domestic dc circuit breaker is basically imported by the whole. pinggao group has developed zkn1-1.8/d4000-80 type dc circuit breaker, which is the first dc circuit breaker for rail transit or track with independent intellectual property rights in china. the dc circuit breaker for rail transit with the core technology will help enter the dc traction power supply market for rail transit.