Assembly unit for an electric power element in a forklift

The unit has an angular mounting plate (10) attached at a holding component of an industrial truck, and a power semiconductor plate (24) carrying a power electronic. A housing cover (22) covers the semiconductor plate that is directly attached at the mounting plate. The mounting plate is made of good heat-conductive material i.e. aluminum. The housing cover is made of plastic, and directly lies over a circular sealing (36) at the mounting plate. The housing cover is attached by a base plate of the mounting plate.