... Fuse Rated voltage: 660V Rated current:160A,250A,400A,630A HR17 fuse switch disconnector,Isolating Switch Fuse1. Description:DNH1(HR17) series NH fuse ... closing, arc extinguishing equipment and touch protection parts, with fuse matched inside. and self-closing test hole ... , 315, 355, 400, 425, 500 and 630Rated insulation voltage: 690VRated voltage: 400VRated limit short-circuit current: 50kA2. ...