Helios Fans HRFD 315÷8÷4

The Helios HRFD 315÷8÷4 is a low-pressure, high-efficiency axial fan engineered for use in ducted ventilation systems. Its cylindrical housing is constructed from durable galvanized sheet steel and includes mounting flanges on both ends, compliant with DIN 24155 standards for consistent fit and compatibility. The integrated terminal box is mounted externally for easy electrical access.

Equipped with a precision-balanced impeller featuring aerodynamically profiled blades made from impact-resistant polymers, the HRFD 315÷8÷4 ensures reliable airflow and quiet operation. The fan is suitable for operating conditions ranging from ‑30 °C to +60 °C, making it ideal for a variety of environments.

Driven by a totally enclosed 3‑phase squirrel cage motor with built-in thermal contacts, this fan is designed for energy-efficient, maintenance-free operation. The motor is speed controllable via voltage reduction and includes sealed-for-life ball bearings for long-term reliability and low noise levels. This model is an excellent choice for systems requiring efficient, low-pressure airflow performance.