1SVR011723R1200 is a multi-function relay produced by ABB. It is part of the S201 series of relay products. This device is a compact, three-phase monitoring and control relay with a wide range of features and functions. It is designed for use in applications that require protection of three-phase electrical equipment, such as motors, transformers, sensors and other components. The relay offers a range of features including: phase-sequence monitoring, overload protection, under and overvoltage protection, phase failure protection, differential current monitoring and more. The relay supports various communication protocols including: Modbus, ASI, and PROFIBUS.