Siemens 3RU2116-1JB0 Overload Relay

Siemens 3RU2116-1JB0 is a three-pole, thermally operated overload relay from the SIRIUS 3RU2 family, designed to protect motors by tripping on overload when used with compatible Siemens contactors. It offers an adjustable current setting from 7.0 to 10 A, a size S00 mounting footprint, and a Class 10 thermal rating. The unit features screw terminals for both the main and auxiliary circuits and provides a manual-automatic reset option after a trip, making it suitable for integration into motor control circuits that require automatic protection with restart control. The 3RU2116-1JB0 is designed to mount on Siemens 3RT contactors (for example 3RT2015/2016/2017/2018) as a standalone motor protection relay that coordinates with the contactor to interrupt current when overheating occurs.