The Helios MWS 1.5 is a five-step speed controller designed for surface mounting, ideal for regulating one or more fans equipped with thermal contacts. It features a robust polymer housing with IP54 protection, suitable for ambient temperatures up to 40 °C.
This controller allows for voltage selection across five steps: 0, 80, 100, 130, 170, and 230 volts. It includes an integrated tripping device and a control lamp for status indication. After a power failure or thermal trip, restart is achieved via the “0” position on the switch. The MWS 1.5 is a reliable and user-friendly solution for precise fan speed control and safety management in ventilation systems.