Siemens 3RU1116-0DB0 Thermal Overload Relay Module

The Siemens Sirius 3RU1116-0DB0 thermal overload relay provides motor protection by monitoring main-circuit current and triggering the contactor when an overload is detected. It is a size S00 device rated for a heater current range of 0.22 to 0.32 A and features a 1NO+1NC auxiliary contact for feedback and control signals. The main circuit uses screw-terminal connections, and the unit is designed for mounting on Siemens contactors in standard motor-protection schemes, such as the 3RT1015, 3RT1016, or 3RT1017 series. With Class 10 thermal protection, the 3RU1116-0DB0 delivers reliable protection against overcurrent conditions in compact motor-control installations and is part of the Sirius 3RU1 family, offering a compact solution for protecting small motors in industrial applications.