Helios Fans SKRD EC 500÷80÷50 A

The Helios SKRD EC 500÷80÷50 A is a rectangular EC centrifugal fan designed for inline installation in 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 effective sound insulation. The design allows easy maintenance and cleaning through a swing-out motor and impeller unit.

This fan is equipped with a high-performance centrifugal impeller featuring backward curved aluminium blades, ensuring vibration-free operation thanks to dynamic balancing and aerodynamic optimisation. The inflow is optimised via a nozzle to enhance performance.

Powered by an energy-saving, speed-controlled EC external rotor motor with IP44 protection, the fan offers maximum efficiency. The maintenance-free motor is ball bearing mounted and radio interference-free, with integrated electronic temperature monitoring for the motor and electronics. Speed control is standard via an internal potentiometer allowing any fan speed adjustment between minimum and maximum. Additional stepless speed control can be achieved with an external potentiometer or the universal EUR-EC control system. Electrical connection is provided via a standard terminal box (IP54) mounted on an extended cable.