The Elta 018-RH100/50 – 54-3TP is a high-capacity rectangular electric heater designed for ducted ventilation systems, offering a powerful 54kW output with a 3‑phase power supply. With a sturdy 1000mm x 500mm frame made from Aluzinc-coated steel, it provides long-lasting protection in demanding environments. The unit includes dual protection thermostats for operational safety and features user-friendly screw terminals for hassle-free wiring. Temperature regulation is handled via a built-in potentiometer. It also includes a differential pressure switch to detect airflow, a sensor to ensure minimum air velocity is maintained, and a supply air temperature sensor to optimize and protect the heating system.