... voltage12kvRated frequency50HZRated current630A5%Rated power load switch-off current31.5AMechanical life10000TimesRated ... V Load Switch with Fuse" (1990 Edition,with the features of safe breaking, ... long power lift-time,frequent operation,obvious isolating break and break transfer current without maintain. The load ... three-phase AC 50Hz for breaking load ,over-load and short-circuit current,esp ...