Helios Fans SKRW EC 355÷60÷30

The Helios SKRW EC 355÷60÷30 is a rectangular EC centrifugal fan designed for in-line installation within rectangular duct systems. Its sturdy casing is constructed from galvanised steel, flanged on both ends, and acoustically lined with 50 mm thick mineral fibreboard to ensure excellent sound insulation. Maintenance is made easy through a swing-out motor and impeller unit, allowing convenient cleaning and service.

This model features a high-performance centrifugal impeller with backward curved blades made of lightweight aluminium. The impeller is dynamically balanced to guarantee vibration-free and quiet operation, with aerodynamic optimization ensuring efficient airflow through an inlet nozzle.

The fan is driven by an energy-saving, speed-controlled EC external rotor motor with IP44 protection, delivering maximum efficiency. The motor is maintenance-free, radio interference-free, and ball bearing mounted for durability. Integrated electronic temperature monitoring protects both the motor and electronics. A standard internal potentiometer allows setting any fan speed between minimum and maximum, with additional stepless speed control possible via an external potentiometer or the universal EUR-EC control system. Electrical connections are provided via a standard terminal box (IP54) mounted on an extended cable.