Helios Fans SVS EC 250

The Helios SVS EC 250 is a high-performance EC centrifugal in-line fan designed for efficient, low-noise ventilation in ducted systems across residential, commercial, and industrial settings. Its flat casing is constructed from robust galvanized sheet steel and lined with 50 mm thick mineral wool for excellent acoustic insulation.

Equipped with twin-seal rubber gaskets on the intake and exhaust spigots, the unit connects seamlessly with standard ductwork. A service-friendly design allows the motor and impeller assembly to swing out, enabling easy maintenance and cleaning without disassembling the system.

The fan features a dynamically balanced centrifugal impeller with backward curved blades, made from high-quality polymers for optimal airflow and reduced noise levels.

Powered by a speed-controlled EC external rotor motor with IP54 protection, the fan delivers superior energy efficiency. The motor is ball bearing mounted, maintenance-free, and radio interference-free, with integrated electronic temperature monitoring for both the motor and control electronics.

Fan speed can be adjusted using the built-in internal potentiometer or steplessly via an external potentiometer or the EUR-EC universal control system. Electrical connections are made through a standard IP54-rated terminal box with an extended cable, offering installation flexibility.