Siemens 3RU1116-1BB0 is a Sirius thermal overload relay (size S00) designed for mounting on contactors to protect motors from overload, with a main-current rating of 1.4…2 A and a 1NO+1NC auxiliary contact configuration. It features screw-terminal connections for both the main and auxiliary circuits and is rated Class 10 in thermal protection, suitable for panel mounting in standard motor control gear. The unit carries front IP20 protection and is compatible with Siemens contactor assemblies; Siemens lists this model as discontinued with 3RU2116-1BB0 as the recommended successor.
