The Precondition to use the top fan is that the ambient temperature should be lower than the temperature required in the cabinet.

Function:
The high power centrifugal top fan can ven the high heat load by the greatest degree,The centrifugal fan not only can avoid the vortex vented by the genral sield magnetic fan,but also can reduce the noise cased by the friction of air,The ventilative cascades are used in the air intake in order to prevent from entering the humidity and dust.

1)Rated Working Voltage    V/Hz:230/50/60,
2)Air Supply(Free Air Blowing):570/620,1200/1340,300/400m₃/h
3)Axial Fan:Auto starting shielded pole Motor
4)Rated Power:0.26A & 0.88A
5)Power:68/85W,135/200W,4X19W/22W
6)Noise Level:62/69dB
7)Temperature Range:—10ºC to 55ºC