RDD 450/4 EX – Helios – Centrifugal Roof Fan – Horizontal Discharge
Horizontal blowing roof fan with efficiency-optimized aluminum housing and newly developed high-performance radial impeller, explosion-proof according to ATEX.
Housing made of seawater-resistant aluminum with integrated intrusion protection. Engine support plate and base plate made of galvanized steel with aluminum inlet nozzle. Base plate with threaded screw for attaching suction-side accessories (hole pattern according to DIN 24155, sheet 3). Protective grille as standard on the discharge side in accordance with DIN EN ISO 13857.
High-performance radial impeller with backward-curved blades made of aluminum.Dynamically balanced according to DIN ISO 1940-1.
Speed controllable three-phase external rotor motor in closed design in IP44. Ball bearing with moisture protection insulation. Maintenance and radio interference free. Ex version according to ATEX.