The Helios HRFW 355/6 is a high-performance axial fan featuring a cylindrical duct made from galvanized sheet steel with flanges on both ends, designed according to DIN 24155 standards. The duct encloses a highly efficient, profiled blade impeller made from polymers that are aerodynamically optimized and dynamically balanced for smooth operation. This fan is suitable for operating temperatures ranging from ‑30 °C to +60 °C.
It is powered by a totally enclosed AC condenser motor equipped with built-in thermal contacts for added protection. The motor speed can be controlled through voltage reduction, allowing flexible operation. The unit is maintenance-free and fitted with low-noise, sealed-for-life ball bearings for quiet, reliable performance. Additionally, the fan is reversible, making it suitable for varied airflow requirements.