A wall-mounted or roof-mounted fan draws in cold ambient air or exhausts warm air from the electrical panel. They provide simple and economical heat dissipation and offer a compact and efficient solution.

They are recommended if:

•  the outside air has a lower temperature value than the inside air (approx. ΔT=10°C)
• a low cooling capacity is required
• little maintenance is required
• the ambient air is not excessively oily or dusty
• outside air and humidity can enter the cabinet