Siemens 3RU2126-1JB0 is a SIRIUS thermal overload relay for motor protection with an adjustable current range of 7 to 10 A, designed for direct mounting on S0-size 3RT contactors. It features screw-terminal connections for both the main and auxiliary circuits, a manual/automatic-reset option, and a primary circuit rated for up to 440 V. This Class 10 overload relay provides inverse-time protection against motor overload and is compatible with Siemens 3RT contactors in common motor-control schemes.
