... current (ib): 1.5 or 3, 5, 10, 15, 20, 30A 2) Maximum current (Imax): Specifications: 1) Nominal current (ib): 1.5 or 3, 5, 10, 15, 20 ... , 30A 2) Maximum current (Imax): 6, 20, 40 or 60, 60 or 100, 80 or 120, 100A 3) Transformer current ... : 600 or 450, 200, 100, 60, 50, 30r/kW/h 5) Rated voltage (Un): 3 x 57.7/100, 3 x 120/208, 3 x ...