Helios Fans SB EC 125 B

The Helios SB EC 125 B is an EC centrifugal fan featuring a sound-absorbing casing made of galvanized sheet steel. The casing includes spigots that fit standard duct sizes and is lined with a 50 mm thick abrasion-resistant mineral fibreboard to reduce noise. It has a removable lid and a retractable motor and impeller assembly for easy maintenance access.

This fan is equipped with a highly efficient backward curved centrifugal impeller designed for quiet operation and dynamically balanced for smooth performance.

It is driven by an energy-saving, speed-controlled EC external rotor motor with IP44 protection, offering maximum efficiency. The motor is maintenance-free, radio interference-free, and uses ball bearings. Integrated electronic temperature monitoring protects both the motor and electronics. An internal potentiometer allows setting the fan speed anywhere between minimum and maximum. Stepless speed control can be achieved via an external potentiometer or the universal EUR-EC control system. Connections are made through a standard IP54 terminal box mounted on an extended cable.