... s mature technology featuring national patents MV intelligent vacuum circuit breakerBased on Germany’s advanced medium ... 3150,5Rated short-circuit breaking currentkA20,25,31.5,40,5020,25,31.56Rated short time withstand ... currentkA20,25,31.5,40,5020,25,31.57Rated peak withstand current50, ... to our fty. V-Sa 12/17.5/24/40.5kV Indoor Medium Voltage Vacuum Circuit Breaker(VCB)