Helios Fans RR EC 315 A

The Helios RR EC 315 A is a compact and flat-design EC radial duct fan engineered for seamless integration into duct systems. Its low-profile housing is made of galvanized sheet steel and includes connection pieces with integrated lip seals on both suction and pressure sides, ensuring a secure fit with standard pipe diameters. A swivel-mounted motor and impeller unit allows for convenient access during cleaning or maintenance. The fan features an energy-efficient radial impeller with backward curved blades constructed from high-grade plastic, dynamically balanced to minimize noise and ensure smooth operation. It is driven by a speed-controllable EC external rotor motor rated IP44, offering maximum efficiency, maintenance-free use, and no radio interference. Electronic temperature monitoring protects both the motor and electronics. Speed can be continuously adjusted using either a built-in potentiometer or the universal control system EUR-EC. Electrical connections are easily made via an external IP54-rated terminal box.