Helios Fans HQD 500/6 Ex

The Helios HQD 500/6 Ex is an ATEX-certified explosion-proof axial fan engineered for safe ventilation in hazardous areas (Zone 1 or Zone 2) where flammable gases or vapors may be present. This model features a 500mm galvanized steel cylindrical housing with mounting flanges per DIN 24155 Part 3, allowing secure duct integration in industrial environments.

Powered by a direct-drive 6‑pole flameproof motor, the fan operates at low rotational speed, producing quiet and energy-efficient airflow — ideal for use in chemical plants, refineries, and other hazardous workspaces. The motor and terminal box meet stringent ATEX requirements, ensuring safe and compliant use in explosive atmospheres.

Its aerodynamically optimized impeller, dynamically balanced to DIN ISO 1940 – 1 (class 6.3), provides smooth, low-vibration performance, while the sealed-for-life ball bearings and IP54-rated enclosure ensure durability and long-term reliability under continuous operation.

Designed for safe extraction or supply of air in explosive zones, the Helios HQD 500/6 Ex delivers quiet, stable airflow and peace of mind in critical safety environments.