AR 250E4 sileo Axial fan

Item Number: 37377

Speed controllable by voltage reduction, plus option of 2-step operation by D/Y switching for 400V versions.

Safe and maintenance free operation.

Can be installed in any mounting position.

Electric connection via terminal box mounted on the casing.

Axial fans of the AR sileo range do have a sickle shape of the fan blade, and are driven by external rotor motors. The AR range is mounted in a round casing according Eurovent 1/2, galvanized steel and powder coated in black (RAL9005). The axial impeller is manufactured from sheet steel black coated. The impeller is balanced dynamically in two levels in accordance with DIN ISO 1940 part 1, quality G6.3.

The motors are equipped with thermal contacts for motor protection, with leads to be connected to a motor protection unit.

Technical parameters

Norminal data
Voltage (nominal) 230 V
Frequency 50 Hz
Phase(s) 1~
Motor circuit connection D
Input power 50 W
Input current 0.217 A
Impeller speed 1,263 r.p.m.
Air flow max 598.0 cfm
Capacitance of capacitor 1.5 µF
Temperature of transported air max 104 °F
Max temperature of transported air, when speed controlled 104 °F
Sound data
Sound pressure level at 1m 52 dB(A)
Enclosure class, motor IP44
Insulation class B
Dimensions and weights
Duct dimension; Circular, inlet 250 mm
Duct dimension; Circular, outlet 250 mm
Weight 8.8 lb
Duct connection type Circular
Color name, casing Black
Motor type AC





z x Ød

AR 250 sileo





4 x Ø7



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