Helios Fans RDS 2

The Helios RDS 2 is a five-stage speed controller designed for surface installation, ideal for regulating the operation of one or multiple fans equipped with thermal contacts. It supports direct connection to thermal contacts via a terminal block, ensuring safe and efficient control within the system’s nominal load.

This unit features switchable voltage levels at 0÷80÷140÷200÷280÷400 volts, allowing for precise fan speed adjustments. It includes an integrated tripping mechanism and an indicator light to display operational status. In case of a fault, the controller can be reset by turning the selector switch back to the ​“0” position.

Housed in a robust plastic enclosure with IP54 protection, the RDS 2 is well-suited for demanding environments with a maximum ambient temperature of 40 °C. It delivers reliable speed control for commercial and industrial ventilation systems.