The Elta 018-CH400-18 – 3TP circular electric heater is engineered for 400mm duct installations, providing a powerful 18 kW heating output on a three-phase electrical supply. Built with Aluzinc coated steel, this heater guarantees durability and resistance to corrosion. It includes two protection thermostats for safe operation and screw terminals for easy and secure electrical connections. Users can precisely set the temperature via an integrated potentiometer. The heater is equipped with a differential pressure switch to monitor airflow, a sensor for minimum air velocity detection, and a supply air temperature sensor, ensuring efficient and safe heating performance under varying airflow conditions.