Helios Fans RR EC 315 B

The Helios RR EC 315 B is a high-performance EC radial duct fan designed for direct installation in circular duct systems. Its durable housing is made of galvanized sheet steel and features round connections that match standard duct diameters, ensuring a secure and simple installation. The fan uses a backward curved radial impeller made of high-grade plastic, directly mounted on the motor and dynamically balanced to deliver quiet operation and high airflow efficiency. Powered by a speed-controllable EC external rotor motor rated IP54, the unit is both energy-efficient and maintenance-free, with ball bearings and integrated electronic temperature monitoring for added reliability. The fan supports stepless speed control via a potentiometer or universal control system, offering flexible performance adjustments. A standard IP54-rated terminal box is mounted externally for easy electrical connection.