Helios Fans KRW EC 450÷70÷40

The Helios KRW EC 450÷70÷40 is a powerful EC centrifugal fan specifically designed for installation in rectangular duct systems. Built with a galvanized steel housing, it features standardized channel flange profiles on both ends for seamless integration. Its compact form allows for space-efficient placement, and the swing-out motor-impeller assembly enables simple, tool-free servicing.

The high-efficiency radial impeller uses backward curved blades made of plastic and galvanized steel. Dynamic balancing ensures smooth, vibration-free operation, while the aerodynamically optimized inlet nozzle enhances airflow performance.

This unit is powered by a speed-controllable EC external rotor motor with an IP44 protection rating. The motor is maintenance-free, low-noise, and resistant to radio interference. Long-life ball bearings and integrated electronic temperature monitoring provide extended reliability and safety. Speed regulation is fully variable via either a potentiometer or the EUR-EC universal control system. Electrical connection is made through a pre-mounted IP54-rated terminal box on the supplied cable.