The Helios HRFD 315/2 is a high-efficiency axial duct fan designed with a robust cylindrical duct made from galvanised sheet steel, featuring flanges on both ends for straightforward installation according to DIN 24155.
Equipped with a highly efficient, dynamically balanced 7‑blade impeller constructed from impact-resistant polymers, the fan is suitable for operating temperatures between ‑30°C and +60°C.
Its power comes from a totally enclosed, maintenance-free 3‑phase squirrel cage motor with sealed-for-life low-noise ball bearings. The fan speed can be controlled via voltage reduction, offering flexible airflow management for industrial and commercial ventilation systems.