DPA01CM69 is a plug-in mounted 3-phase mains monitoring relay designed to monitor 3-phase systems with 3 wires (3P), detecting phase loss and incorrect phase sequence. The device operates on a voltage range of 600 to 690 VAC (±15%, 510 to 793 V) with power supply provided by the monitored mains, consuming less than 15 VA. It features a single SPDT electromechanical relay output with changeover contacts rated at 8 A @ 250 V AC (Ith), along with output and status LED indication for quick troubleshooting. The relay de-energizes immediately upon detection of phase loss (when one phase = 85% of rated value) or incorrect phase sequence, with response times of less than 100 ms delay ON and less than 350 ms delay OFF. This monitoring relay is ideal for industrial applications requiring reliable 3-phase mains supervision in high-voltage systems, offering regenerated voltage detection to identify phase loss even during motor operation.