An electrical unit includes a thermally conductive housing, an electrically insulating frame disposed in the thermally conductive housing, a plurality of bus bars disposed at least partially between a base wall of the thermally conductive housing and a first side of the electrically insulating frame, and a plurality of electrical components connected to a second side of the electrically insulating frame. At least one bus bar of the plurality of bus bars may be connected to the electrically insulating frame via one or more plastic rivets. Thermally conductive material may be disposed between at least one bus bar of the plurality of bus bars and a wall of the housing.