Helios Fans SB EC 315 B

The Helios SB EC 315 B is an EC centrifugal fan designed for quiet and energy-efficient operation. It features a sound-absorbing casing made from galvanized sheet steel, with round connectors that match standard ducting systems. The interior is lined with perforated sheet metal and a 50 mm thick mineral fibre board to significantly reduce noise levels. The casing includes a swing-out cover for easy access, while the motor and impeller unit is fully retractable for simplified maintenance.

At its core is a highly efficient backward curved centrifugal impeller, dynamically balanced to ensure smooth and low-noise performance.

The fan is driven by a speed-controlled EC external rotor motor with IP44 protection for maximum efficiency. The motor is maintenance-free, radio interference-free, and features ball bearing support. Integrated electronic temperature monitoring protects both the motor and electronics. The unit comes with an internal potentiometer for setting the fan speed within its full range, and also supports stepless control via an external potentiometer or the EUR-EC universal control system. Electrical connections are handled through a standard IP54-rated terminal box mounted on an extended cable.