Helios Fans VDD 560/6 Ex

The Helios VDD 560/6 Ex is a centrifugal roof fan engineered for vertical discharge, designed specifically for hazardous environments requiring explosion-proof equipment compliant with ATEX standards. The fan boasts an efficiency-optimized casing constructed from seawater-resistant aluminium, complete with integrated anti-intrusion protection for enhanced safety.

Its motor support plate and base plate are fabricated from galvanized steel, complemented by an aluminium inlet nozzle. The base plate features threaded screws to securely attach intake-side accessories according to the DIN 24155 hole pattern (sheet 3). A protective grille on the discharge side is standard, meeting DIN EN ISO 13857 requirements.

This model includes a high-efficiency backward curved centrifugal impeller made from aluminium, dynamically balanced per DIN ISO 1940 – 1 to ensure smooth and reliable operation.

Power is delivered by a totally enclosed, speed-controllable, three-phase external rotor motor with IP44 protection. The motor’s ball bearings are equipped with moisture protection and are maintenance-free, also providing interference suppression. The VDD 560/6 Ex offers a dependable solution for ventilation in explosion-prone settings.