Helios Fans EVK 630

The Helios EVK 630 is a ventilation cover designed for protecting supply and extract air openings in ventilation systems. It includes a frame, blades, and actuators made of light grey plastic, with an actuator housing rated IP55 for reliable outdoor installation. The number of louvres varies with the size to ensure optimal airflow. This model is equipped with two servomotors for enhanced operation. Automatic control is provided via a localised changeover switch that activates the servomotors, which in turn switch the fan circuit using a limit switch. The fully wired signal box includes a 1.5‑meter connection cable for convenient setup. Operating at 230 V, 50/60 Hz, it supports a maximum supply air flow velocity of 6 m/​s and a maximum exhaust air flow rate of 8 m/​s.