Vacuum Interrupter (ZKBD-630/12-20TYPE)
ZKBD 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 circuit breaker of high voltage , happen as three-phase exchange , power supply system in distribution and motor concentration control equipment.

Technical parameter
Specified voltage 12KV
The specified withstand current of peak value 80KA
Specified Chu the contact resistance under first pressure ≤30μΩ
Specified working current 1250, 1600A
Is specified Work frequency withstand voltage 42KV
Chu the first thickness of permissible wear 3mm
The specified switched current of short circuit 25,31.5KA
Specified is short withstand current 31.5KA
The 20 years of storage life
Specified current Break open Frequency 30Frequency
Specified is short endure by time 4S
Match to use circuit breaker ZN28-12type
Specified impact withstand voltage 75KV
Chu head from close force 190+_40N
The specified barrier of short circuit joins current 80KA
Specified open rules take off Chu head turn over force 240+_40N