The LRC series switch cabinet coolers have been designed especially for use in machines. The cooling water that usually exists there can be easily used for cooling the units. The LRC series enables a high power output in a compact size and cooling that is largely independent of the ambient temperature. The water path and the position of the hose connections can be selected as desired. In addition, the LRC series provides all the benefits of Peltier technology, such as position-independent installation and being able to change over to heating.