HR17 Series Fuse Type Isolating Switch Rated voltage :690,500,400V Using category:100~630A Naidian Brand HR17 Series Fuse Type Isolating SwitchHR17 series fuse type isolating switch, rated insulating voltage AC 800V , rated operating voltage 690V .400V, rated frequency 50Hz , the rated current 160A-630A mainly used as power switch , isolating switch and emergency switch with function of ...