The OUVR-2 Self-recovering Overvoltage and Undervoltage Protector is a fundamental device for safeguarding three-phase electrical systems from damaging voltage fluctuations. This intelligent protector automatically disconnects power during hazardous overvoltage or undervoltage conditions across all phases and intelligently restores the supply once stable voltage returns, ensuring seamless operational continuity. With customizable thresholds and clear status indication, the OUVR-2 provides an indispensable solution for comprehensive power protection across commercial, industrial, and larger residential applications.