Handle unit with EFM20, for Size NH2, accessory for fuse switch disconnector 3NP1 Fuse switch disconnector 3NP up to 630 A with enhanced protection for personnel and plants and user-friendly connection system. The fuse switch disconnectors provide reliable overload and short-circuit protection for industrial plants or infrastructure and are suitable for use in various industries. The reach-round and touch protection incorporated as standard in the new SENTRON 3NP1 series prevents users from touching current conducting parts when mounting in a busbar system, even if they need to be accessed on the rear. The large inspection window also ensures that the user can easily recognize the fuses installed. www.siemens.com/switching-devices. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, distribution boards as well as switches and sockets for safe and efficient electrical infrastructure in buildings and industry.