Heater for DIN rails

Electrical equipment and fuses installed in outdoor cabinets, such as industrial, residential and infrastructure applications need to be heated in cold climates. Temperature differences create condensation, functional problems and especially circuit breakers will not necessarily release at rated current at low temperatures but can deliver significantly higher current before releasing.

This create unsafe and directly hazardous electrical installations. To avoid the problem are heaters normally installed in electrical cabinets that are located outdoors. This will, especially during the cold season entail a considerable energy loss as the metal cabinets are generally uninsulated and the electrical appliances require a working temperature of roughly +20C.

SweRail AB has developed a new type of heater that improves both safety and energy savings in existing and new installations by using self-regulating PTC elements and by utilizing direct transfer of heat to apparatus and fuses.