Fuse switch disconnector NH1 3x250A SS 40mm outlet: universal connections M10. NH1 fuse switch disconnector for busbar mounting, distance 40mm According to DIN0660/107 and IEC 947-3, suitable for NH fuse links according to DIN 43620/1. Consisting of a 3-pole switch base and sealable handle insert, touch protection on the handle, with sliding transparent window for voltage testing, all-pole switching, for mounting on a CU busbar, distance 40 mm, outlet at the top or bottom, without additional cover.