size: 315 - 630 mm (impeller diameter)
asynchronous external rotor motor
sickle-shaped impellers
terminal box design; alternatively, lateral or axial cable outlet
protection class IP54, thermal class F
Sickle formed axial impellers result in a very low noise spectrum. The main concern was to keep noise emission low in the main range of application of the fan, while having an optimal performance curve with the long and short inlet cones. The impellers are designed as follows:
size from 350 to 450
made of sheet steel
size from 450N to 630
of aluminium sheet
Serving as contact protection and for mounting the fan onto the inlet cone.
External dimensions according to customer requirements. If necessary, please submit a drawing.