Abstract: Current converter assembly, including a parallelepipedal housing having an upper surface and an interior being filled with a hardened cast insulating compound, the housing including a flat frame having an open top and bottom, a rectangular edge section extended all around the frame, a rib extended all around the frame toward the interior thereof at substantially the middle of the edge section, and steadying struts disposed on the rib, a ceramic plate having a surface facing the interior of the housing and having outer dimensions corresponding to the length and width of the flat frame, conducting copper foils disposed on the surface of the ceramic plate facing the interior of the housing, semiconductor chips being soldered on the copper foils, connecting straps connecting the semiconductor chips to each other, and connecting elements being extended out of the housing from the ceramic plate in a direction perpendicular to the ceramic plate, the connecting elements being retained by the steadying struts and bein