The ABB CM-PFE.2 Phase Sequence Monitoring Relay is an essential component for ensuring the reliability and safety of three-phase electrical systems. Designed to operate with a control supply voltage and three-phase measuring voltage ranging from 200 to 500 V AC, this relay is equipped with a 1 c/o output, adhering to the closed circuit principle. The contacts are rated at 250 V / 4 A, making it robust for various applications. The CM-PFE.2 is specifically engineered to monitor phase loss and phase sequence, with fixed threshold values for precise and dependable performance. Ideal for safeguarding three-phase mains, this relay is a critical tool for maintaining system integrity and preventing potential electrical failures.