Helios Fans SKRW EC 315÷50÷25 B

The Helios SKRW EC 315÷50÷25 B is a rectangular EC centrifugal fan designed for seamless in-line installation within rectangular duct systems. Its robust casing, made from galvanised steel and flanged on both ends, features a compact design acoustically lined with 50 mm thick mineral fibreboard for effective sound insulation. The fan offers easy maintenance access via a swing-out motor and impeller unit.

This model features a high-performance centrifugal impeller with backward curved blades constructed from galvanised sheet steel. The impeller is dynamically balanced to ensure vibration-free and quiet operation. Aerodynamic optimization enhances the airflow through an inlet nozzle.

Powered by an energy-efficient, speed-controlled EC external rotor motor with IP44 protection, this motor delivers maximum efficiency while being maintenance-free and radio interference-free. The motor is ball bearing mounted and includes integrated electronic temperature monitoring for both motor and electronics. It comes standard with an internal potentiometer for precise fan speed adjustment between minimum and maximum. Additional stepless speed control can be achieved via an external potentiometer or a universal control system EUR-EC. Connections are facilitated through a standard terminal box (IP54) mounted on an extended cable.