Helios Fans SKRD EC 400÷60÷35

The Helios SKRD EC 400÷60÷35 is a high-performance rectangular EC centrifugal fan designed for inline installation within rectangular duct systems. Its compact casing is constructed from galvanised steel, flanged on both ends, and acoustically lined with 50 mm thick mineral fibreboard to provide excellent sound insulation. Maintenance is simplified by a swing-out motor and impeller unit, allowing easy cleaning and servicing.

This fan features a high-efficiency centrifugal impeller with backward curved blades made from aluminium, ensuring vibration-free operation through precise dynamic balancing. The impeller is aerodynamically optimised with an inflow nozzle for enhanced airflow performance.

Powered by an energy-saving, speed-controlled EC external rotor motor with IP44 protection, this fan delivers maximum efficiency. The motor is maintenance-free, radio interference-free, and ball bearing mounted. Integrated electronic temperature monitoring protects both the motor and electronics. Speed can be adjusted via a standard internal potentiometer, with additional stepless control options available using an external potentiometer or the universal EUR-EC control system. Electrical connection is through a standard terminal box (IP54) mounted on an extended cable.