Busbar support PE/N for distribution system EP, 60 mm system, rated operating current Ie=630A, pole=1, usable for 30x5/10, thermoplastic, silicone-free, chlorine-free, halogen-free, busbar support spacing according to short-circuit strength diagram of the distributor, expandable to 4- and 5-pole by plugging into the 3-pole SL6303 support