Power supply, in particular for a sterilization device, comprising a housing, wherein the housing comprises at least a first sector and a second sector, wherein the first sector comprises a first pair of opposing side walls, and wherein the second sector comprises a second pair of opposing side walls, wherein the side walls are orientated basically parallel to a vertical axis of the housing , wherein the first pair of side walls is arranged in a first angle and the second pair of side walls is arranged in a second angle, wherein the first angle and the second angle are different from each other.