SENTRON, fuse switch disconnector 3NP1, 3-pole, NH00, 160 A, for 60mm 8US busbar system, box terminal, Fuse monitoring electronic EFM15, cover level 32/70 mm Fuse switch disconnector SENTRON 3NP1 3NP fuse switch disconnector up to 630 A with enhanced protection for personnel and plants and user-friendly connection system.. Optimized technology for your safety - only from Siemens.