... disconnector,Isolating Switch Fuse1. Description:DNH1(HR17) series NH fuse switch disconnector used for rated current 40A-630A, can be ... auxiliary closing, arc extinguishing equipment and touch protection parts, with fuse matched inside. and self-closing test hole in the switch ... heat current: 160A, 250A, 400A and 630ANumber of poles: 3P,Assorted fuse links: NT00 for 160A, NT1 for 250A, NT2 for 400A ...