Helios Fans HRFD 355/2

The Helios HRFD 355/2 is a high-efficiency axial fan specifically designed for ducted ventilation systems in commercial and industrial environments. It features a cylindrical housing made from galvanized sheet steel with mounting flanges at both ends, following DIN 24155 standards for universal compatibility. A weather-protected terminal box is mounted externally for straightforward electrical connections.

This model is equipped with an aerodynamically optimized impeller manufactured from durable, impact-resistant polymers. The impeller is dynamically balanced to ensure smooth, low-vibration operation and consistent airflow performance. The fan operates reliably within a wide temperature range of ‑30 °C to +60 °C.

The HRFD 355/2 is powered by a fully enclosed 3‑phase squirrel cage motor with built-in thermal protection. The motor supports speed control via voltage reduction and features sealed-for-life ball bearings, offering maintenance-free and quiet operation. This fan is ideal for systems requiring robust airflow and high efficiency under continuous operation.