HR17 fuse switch disconnector,Isolating Switch Fuse Rated voltage: 660V Rated current:160A,250A,400A,630A HR17 fuse switch disconnector,Isolating Switch Fuse1. Description:DNH1(HR17) series NH fuse switch disconnector used for rated current 40A-630A, can be bus type or fixed type, provide upper or lower end connection, with integrated auxiliary closing, arc extinguishing equipment and touch ...