... .3. The isolating knife blade, full range protection and semiconductor protection fusible coreare optional.4. Fuse wire monitor and signal switch ... is used as power switch, isolating switch and emergency switch, and for protecting current.DNH Bar Fuse Switch Disconnector with unique process ... 20,25,32,35,40,50,63,80,100,125,160DNH-250ANT125080,100,125,160,200,224,250DNH-400ANT2400125,160,200 ...