Main characteristics Rated insulation voltage (Ui)     1000V   Rated operating voltage (Ue)     690 V   Rated Frequency     50/60 Hz Rated current main busbars   ≤ 6300 A distribution busbars ≤ 3200 A Rated short - time withstand current for 1 sec. (Icw)     ≤ 100 kA   Rated peak withstand current (Ipk)     ≤ 220 IkA Degree of protection (according to EN 60529) external enclosure IP31/ IP42       with open door   IP2X/ IP4X Maximum number of modules for section     48 Internal separations     form 2,3,4 Access     from the rear Entry and exit of cables     from top or bottom   Dimensions of a section width   600,800,900,1200, 1400 mm   height   2365 mm   depth   1035,1385,1510 mm