PrismaSeT P. Linergy BS 4-pole, rear-mounted, vertical copper busbar for 400 A with a bar size of 32 x 5 mm, featuring M6 threaded holes at 25 mm intervals, with a rated surge current withstand (Ipk) of 55 kA. The rated insulation voltage (Ui) is 1000 V AC, and the rated short-circuit current (Icc) is 150 kA. Alternatively, there is a 4-pole multi-stage vertical copper busbar for 400 A with a bar size of 32 x 5 mm and M6 threaded holes at 25 mm intervals, a rated surge current withstand (Ipk) of 55 kA, a rated insulation voltage (Ui) of 750 V AC, a rated short-circuit current (Icc) of 150 kA, and a length of 1400 mm.