Helios Fans KRW EC 400÷60÷35

The Helios KRW EC 400÷60÷35 is a high-performance EC centrifugal fan designed for installation in rectangular ductwork systems. The housing is constructed from galvanized sheet steel and features standardized flange profiles on both sides for easy integration in tight spaces. Its swing-out motor and impeller unit ensures fast and straightforward servicing.

This fan includes a radial impeller with backward curved blades made from plastic and galvanized steel. The impeller is dynamically balanced for low-vibration, quiet operation, and optimized airflow is achieved through an aerodynamically contoured inlet nozzle.

An energy-saving EC external rotor motor powers the unit, offering high efficiency and IP44 protection. The motor is designed to be maintenance-free, radio interference-resistant, and features long-life ball bearings. Integrated electronic monitoring safeguards the motor and electronics from overheating. Speed can be controlled infinitely using a potentiometer or the universal EUR-EC control system. Electrical connection is provided via an IP54-rated terminal box pre-mounted on the cable.