Helios Fans RDS 4 Note: FREE Click & Collect
The Helios RDS 4 is a five-stage speed controller designed for surface installation, suitable for managing one or more fans equipped with thermal contacts. It connects directly via a terminal block, providing reliable control within the rated load. Offering selectable voltage settings of 0÷80÷140÷200÷280÷400 volts, this controller enables flexible ...