Abstract: A power converter arrangement comprising: a housing having first and second chambers separated by a separating body; a power semiconductor module; and a device. The capacitor is electrically conductively connected to power semiconductor module by a connecting device. Power semiconductor module, the connecting device and connection elements of the capacitor are arranged in first chamber. The capacitor reaches through the separating body between the first and second chambers into second chamber for cooling of the capacitor. The separating body has a first cutout through which the capacitor reaches. A flat, elastic sealing body which runs peripherally around the first cutout and reaches into the region of the first cutout and surrounds the capacitor there in sealing fashion, is arranged on a surface of the separating body. A pressing body presses the sealing body against the separating body and terminates in sealing fashion there.