unibar M, 1000A, center feed with entry plate (for single-core cable). Center feed box for installation on a 5-pole busbar system for a type-tested low-voltage switchgear assembly in accordance with IEC/EN 61439-1 and -6. Feed box consisting of sheet steel housing (galvanized and painted), busbars, cable entry grommets and connection bolts. In the feed box, the connecting cables are connected to the busbars using connection bolts. Note: The center feed boxes can be used either vertically or flat. Position of the PE rail can be changed