The Helios Fans RRK 125 is a compact and powerful centrifugal fan, purpose-built for inline installation within circular ducting systems. Its casing is crafted from tough, impact-resistant polymer and features spigot connections compatible with standard duct sizes, ensuring a quick and secure fit.
This unit is equipped with a high-performance centrifugal impeller featuring backward-curved blades made from durable polymers. The impeller is dynamically balanced to class G 6.3 according to DIN and ISO 1940 standards for smooth, vibration-free operation.
The RRK 125 is driven by a totally enclosed, single-phase external rotor motor. Designed for long-term performance, the motor includes thermal contacts wired in series with the windings for overheat protection and utilizes sealed-for-life, low-noise ball bearings. This maintenance-free fan delivers quiet, efficient ventilation for a variety of ducted applications.