Helios Fans HQD 500÷6÷6

The Helios HQD 500÷6÷6 is a dual-speed axial fan tailored for industrial and commercial ventilation systems that require flexibility in airflow control and whisper-quiet performance. With a 500mm diameter cylindrical steel casing and standard DIN 24155 Part 3 flanges, it ensures secure and easy installation into ducted systems.

Driven by a direct-drive 6/​6‑pole dual-speed motor, this fan operates at two low rotational speeds, allowing users to adapt airflow to varying operational needs while maintaining reduced noise levels. It’s particularly suited for environments where quiet operation and energy efficiency are essential, such as warehouses, processing areas, and sensitive production spaces.

The impeller is aerodynamically optimized and dynamically balanced according to DIN ISO 1940 – 1 (class 6.3), providing stable airflow with minimal vibration. The fan features sealed-for-life ball bearings, integrated thermal motor protection, and an IP54 rating, offering reliable protection in demanding applications.

Ideal for both supply and extract ventilation, the Helios HQD 500÷6÷6 delivers silent, adaptable, and durable performance that meets the requirements of modern industrial ventilation systems.