... long life 3)reliable 1, Product Name: Indoor high voltage Vacuum Circuit Breaker 2, Product Type:CLZN63-12(VS1) 3, Product ... Introduction CLZN63-12(VS1) Vacuum Circuit Breaker is adopt advanced CAD/CAM/CAE design and ... handcart type.2) This products using the leading manufacturers of vacuum interrupters,maintenance-free ,high reliability ,suitable for frequent operation and ...