Helios Fans EVK 250

The Helios EVK 250 is designed to effectively cover supply and extract air openings. Its frame, blades, and actuators are constructed from light grey plastic, with an actuator housing rated IP55 to ensure suitability for outdoor installation. The number of louvres varies according to size to meet different ventilation needs. This model includes automatic control linked with the fan, where a local changeover switch activates the servomotor, which controls the fan circuit via a limit switch. It comes with a fully wired signal box and a 1.5‑meter connection cable for straightforward installation. Operating at 230 V, 50/60 Hz, the EVK 250 supports a maximum supply air flow velocity of 6 m/​s and a maximum exhaust air flow rate of 8 m/​s for efficient ventilation performance.