Installation contactors enable automated processes in building installation Preferred solution for switching and controlling lighting, heating systems, ventilation systems, pumps, heating pumps and other building automation drives Hum-free solenoid drive Quiet switching Switch position indication Integrated coil circuit Overvoltage protection of solenoid up to 5 kV High switching capacity and service life Quick-action fixture with locking slide Large connections with open frame terminals Contact protection to VDE 0106 Part 100 Auxiliary switches and sealing caps as accessories