... is one of the leading China 12kv vacuum circuit breaker manufacturers and suppliers,Website:http://www.xd-bjelectric ... 12kV VCB, 12kv vacuum circuit breaker products at competitive price.Product Description VXB-12 Series Indoor vacuum circuit breaker is suitable to 12kV ... can be used with KYN28 Series switchgear. The structure of this vacuum circuit breaker is withdrawable truck, the spring ...