Helios VDW 250/4

Helios Ventilatoren roof fan VDW 250/4

Manufacturer: Helios Ventilatoren
Designation: Roof fan 1-PH, 230 V, 4-pole
Type: VDW 250/4
Mains frequency: 50 Hz
Rated voltage: 230 V
Housing material: Aluminium
Surface protection housing: Other
Integrated automatic closing flap: No
Volume flow: 900 m³/h
Rated power: 63 W
Medium temperature: -20 to 70 °C
Protection class (IP): IP44
Nominal duct diameter: 250 mm

Further details: Vertical discharge roof fan with efficiency-optimised aluminium housing and newly developed high-performance centrifugal impeller. Housing made of seawater-resistant aluminium with integrated intrusion protection. Motor support plate and base plate with inlet nozzle made of galvanised steel. Base plate with threaded screws for attaching suction-side accessories. Protective grille as standard on the outlet side in accordance with safety standards. High-performance centrifugal impeller with backward curved blades made of galvanised sheet steel. Dynamically balanced according to industry standards. Speed-controllable single-phase AC external rotor motor in enclosed design in IP44. Ball bearing mounted with moisture protection insulation. Maintenance-free and interference-free. With external terminal box in protection class IP 65 as standard.