Abstract: An inverter system for a drive train of a motor vehicle is disposed in a multi-part housing. The inverter system includes a control board which can be connected via control cable connections to control lines, DC link capacitors, power semiconductors, control units, and current transformers. The housing is formed with an electronics level, a power level and a connection level. The interior of the housing has a plurality of zones in which different conditions prevail with regard to temperature and/or EMC shielding.