Helios RDD 355/4 EX

Horizontal discharge roof fan with efficiency-optimized aluminum housing and newly developed high-performance centrifugal impeller, explosion-proof in accordance with ATEX. Housing made of seawater-resistant aluminum with integrated intrusion protection. Motor support plate and base plate made of galvanized steel with aluminum inlet nozzle. Base plate with threaded screw for attaching suction-side accessories. Protective grille as standard on the outlet side in accordance with DIN EN ISO 13857. High-performance centrifugal impeller with backward curved blades made of aluminum. Dynamically balanced in accordance with DIN ISO 1940-1. Speed-controllable three-phase external rotor motor in enclosed design in IP44. Ball bearings with moisture protection insulation. Maintenance-free and interference-free. Ex version in accordance with ATEX.