The Helios HRFW 500/6 is a high-performance axial fan with a cylindrical duct made from galvanized sheet steel, fitted with flanges on both ends, and flange fixing holes complying with DIN 24155 standards. It includes a highly efficient, aerodynamically optimized 6‑blade impeller made of impact-resistant polymers, dynamically balanced to ensure smooth operation. This fan is suitable for use in ambient temperatures ranging from ‑30 °C to +60 °C.
The fan is powered by a totally enclosed AC condenser motor equipped with built-in thermal contacts for motor protection. The motor speed is adjustable via voltage reduction, allowing flexible control. Maintenance-free with low-noise sealed-for-life ball bearings, the HRFW 500/6 also supports reversible airflow, making it ideal for versatile ventilation applications.