• Hum-free operation – peace of mind in noise-sensitive environments
• Tool-free accessories – auxiliaries, space holders and security covers can be mounted 100% tool-free
• Group mounting – no need for a distance piece in between contactors ESB16.N and ESB/EN20.N
• Single- and multipackaging – the right choice according to your needs
• Built-in protective circuit – protect against remote lightening strikes and overvoltages

ABB’s hum-free installation contactor designs offer a wide range of ratings from 16 A to 100 A. Widely used in buildings for switching and controlling lighting, heating, ventilation, motor and pumps, the installation contactors take noise reduction to a new level. With an innovative AC/DC design that eliminates hum, a selection of tool-free accessories as well as manual and automatic versions, installation contactors offer peace of mind in noise-sensitive applications.