Helios VDD 450/4 EX

Vertical discharge roof fan with efficiency-optimized aluminum housing and a newly developed high-performance centrifugal impeller, explosion-proof in accordance with ATEX. The housing is made of seawater-resistant aluminum with integrated intrusion protection. The motor support plate and base plate are made of galvanized steel with an aluminum inlet nozzle. The base plate features a threaded screw for attaching suction-side accessories. A protective grille is standard on the outlet side in accordance with DIN EN ISO 13857. The high-performance centrifugal impeller has backward curved blades made of aluminum and is dynamically balanced in accordance with DIN ISO 1940-1. It includes a speed-controllable three-phase external rotor motor in an enclosed design rated IP44. The ball bearings have moisture protection insulation, making it maintenance-free and interference-free. The Ex version complies with ATEX standards.