Helios Fans HRFW EC 500 A

The Helios HRFW EC 500 A is a high-performance EC axial fan engineered for energy-efficient ventilation in industrial and commercial environments. Its robust cylindrical housing is constructed from galvanized sheet steel with flanged ends conforming to DIN 24155 Part 2, ensuring compatibility with standard ducting systems. A weather-resistant IP55 terminal box is externally mounted for easy electrical connection.

The impeller features aerodynamically profiled blades made from durable polymer, designed to optimize airflow and reduce noise. Dynamically balanced for smooth, vibration-free operation, the impeller supports reliable performance across a wide temperature range from ‑30 °C to +60 °C.

Equipped with an EC external rotor motor rated at IP54, this fan delivers outstanding efficiency and minimal power consumption. The motor is maintenance-free, features sealed-for-life ball bearings, and offers high electromagnetic compatibility (EMC), making it ideal for sensitive applications.

Integrated electronic temperature monitoring protects both the motor and control electronics. The fan includes an internal potentiometer to adjust speed manually and supports multiple control methods — such as an external speed potentiometer, three-step switch, or fully variable control via a universal controller or electronic differential pressure/​temperature system. This ensures precise and flexible operation tailored to your system’s needs.