Siemens 3RH1244-1BB40 Auxiliary Contactor

The auxiliary contactor, also known as control relay, auxiliary relay, or contactor auxiliary contact, from Siemens with type number 3RH1244-1BB40 is an electrical switching device from the category of auxiliary contactors. It has dimensions 12 x 7 x 6 cm and a weight of 0.32 kg. Auxiliary contactors serve in electrical engineering as control and signaling elements in complex circuits, for signal forwarding, and for the indirect control of power contactors. Typical applications are found in automation technology, in mechanical engineering for controlling motors or lights, and in building automation for controlling lighting systems and ventilation systems.