The installation contactors are often used for automation processes in building installations. They are mainly used for switching and controlling lighting systems, ventilation, heating, pumps and heat pumps in building automation. The devices are suitable for panel installation on mounting rails (35 mm) in accordance with DIN EN 50 022. Advantages: hum-free magnetic drive, low-noise switching, switch position indicator, attachable auxiliary switch, high switching capacity and service life, touch protection in accordance with 0106 Part 100.