Helios Fans VDD 500/6 Ex

The Helios VDD 500/6 Ex is a robust centrifugal roof fan engineered for vertical discharge applications in hazardous environments requiring ATEX compliance. Its seawater-resistant aluminium casing is built for durability and includes integrated anti-intrusion protection to ensure safety in demanding conditions.

The unit features a galvanized steel motor support and base plate, along with an aluminium inlet nozzle to optimize airflow. A threaded screw is provided on the base plate for the attachment of intake-side accessories, conforming to the hole pattern specified in DIN 24155 (sheet 3). A protective discharge-side grille is fitted as standard, complying with DIN EN ISO 13857 for user safety.

This fan is equipped with a high-efficiency, backward-curved centrifugal impeller made from aluminium, dynamically balanced in accordance with DIN ISO 1940 – 1 for quiet, stable operation.

Power is provided by a totally enclosed, speed-controllable three-phase external rotor motor rated IP 44. The motor features moisture-protected ball bearings, ensuring maintenance-free and interference-free performance. Designed for explosive atmospheres, the VDD 500/6 Ex meets ATEX requirements, making it a reliable and secure ventilation solution for industrial applications.