... adjust,long life 3)reliable 1, Product Name: Indoor high voltage Vacuum Circuit Breaker 2, Product Type:CLZN63-12(VS1) 3, Product ... and IEC60298 standard ,The product overall structure of switch boby intergrated with the operating mechanism installed ... using the leading manufacturers of vacuum interrupters,maintenance-free ,high reliability ,suitable for frequent operation and high interruption.3) It ...