Busbar system, accessories, bar center distance 40mm, busbar holder 3-pole 12x 5, 2x12x 5,15x 5, 2x15x 5 as end and intermediate holder including inserts for bar thickness 5mm and including end covers, busbar system 8US for the installation of protective devices such as fuse switch disconnectors and circuit breakers - safe, space-saving, clear. The use of the Siemens busbar systems 8US offers a wide range of options for the installation of rail-adaptable connection, switching and installation devices. The space-saving modular design and quick-assembly contacting ensure economical electrical equipment in today's installation distribution board construction. The assembly takes place on longitudinal beams, the rail spacing is 60 mm.