Vacuum Interrupter (ZKBF-12/630-20TYPE) ZKBF type vacuum switch pipe adopts high oxidize glass make insulation shell and pipe make medium with high vacuum, so, its volume little, endure high voltage and minute break ability the strong length of service life , Chu head need not repair , especially because of its electric arc not outside dew, safe reliable advantage, is coal, power, chemical engineering, metallurgy, weaving and high-rise building etc. profession place extensive adopting. this product match with suitable hold motivation Gou, may assemble close the business flow out the vacuum load switch of high voltage , as electrical facility protect and control . join load current, the current of closed circuit, idle transformer and cable charging current used in minute. Technical parameter Specified voltage 12KV The specified withstand current of peak value 50KA Specified Chu the contact resistance under first pressure ≤30μΩ Specified current 630A Specified is short endure by time 4S Chu the first thickness of permissible wear 3mm Specified meritorious load switched current 630A The specified barrier of short circuit joins current 50KA The 20 years of storage life The specified switched current of closed circuit 630A Is specified Work frequency withstand voltage 42KV Match to use load switch FZN21-12D/T630-20type Specified cable charges switched current 10A Chu head from close force 190+_20N Specified break open idle transformer capacity 1250KVA Specified open rules take off Chu head turn over force 240+_24N