... match with the cabinets, such as XGN2, GG1A and GGX2. VS1-12(ZN63A) indoor high voltage vacuum circuit breaker, also called ... breaker developed and designed on the basis of handcart type VS1. It can match with the cabinets, such as XGN2, GG1A ... as few changes, low investment, easy installation and saving time. VS1-12(ZN63A) indoor high voltage vacuum circuit breaker(VCB)