Helios Fans RR 200 B

The Helios RR 200 B is a robust centrifugal fan built for direct integration into circular duct systems, delivering medium to small airflow volumes against high system resistance. Its durable housing is made from galvanized sheet steel and includes spigots sized to fit standard ductwork. The backward-curved impeller, crafted from high-quality polymer, is directly mounted to the motor and dynamically balanced for smooth, low-noise operation with optimal energy efficiency. Equipped with a totally enclosed single-phase external rotor motor, the fan features sealed-for-life ball bearings and built-in thermal protection. This maintenance-free motor allows for speed control via voltage reduction, making it a flexible choice for various ventilation applications.