The ABB REA107-AA is a robust and reliable three-phase, non-directional overcurrent and earth-fault relay designed for protection applications in medium voltage distribution networks. This static relay provides comprehensive protection for feeders, transformers, and motors against overloads and short-circuits. It features selectable inverse definite minimum time (IDMT) or definite time (DT) characteristics, ensuring flexible and precise coordination with other protection devices. The REA107-AA is known for its straightforward configuration via front-panel switches, making it easy to install, commission, and maintain without the need for specialized software. Its compact design and proven ABB technology make it an ideal choice for both new installations and retrofitting projects, guaranteeing the safety and stability of your electrical system.