Helios Fans SB EC 315 A

The Helios SB EC 315 A is an EC centrifugal fan designed for efficient and quiet operation. It features a sound-insulated housing made from galvanized sheet steel with round connectors suitable for standard duct installations. Internally, the casing is lined with perforated sheet metal and a 50 mm thick mineral fibre board to significantly reduce noise. A swing-out cover allows easy access, and the motor and impeller unit is fully retractable for straightforward maintenance.

This model includes a backward curved centrifugal impeller that is dynamically balanced for smooth, low-noise airflow and high efficiency.

The fan operates using a speed-controlled EC external rotor motor with IP44 protection, delivering optimal energy performance. It is maintenance-free, ball bearing mounted, and engineered to be free from radio interference. Integrated electronic temperature monitoring ensures the safety of both the motor and control electronics. Fan speed can be adjusted via the built-in potentiometer or controlled steplessly using an external potentiometer or the EUR-EC universal control system. Electrical connections are made through a standard IP54-rated terminal box mounted on an extended cable.