R-K Electronics, Inc. Protection Relays & Systems DPM-24A-T-0002

The DPM is a digital three-phase voltage monitor for line voltages 200 to 600VAC, monitoring phase imbalance, rotation, and frequency. It features a 16-character LCD display with backlighting and retains settings and fault history during power loss. The DPM-24A-T variant operates from 24VAC supply and uses terminal block termination on the control side with push-on tabs on the line side. It mounts via two screws, measuring 4.25 in x 5.65 in x 4.80 in and weighing 1 pound. Operating temperature ranges from -40°C to 65°C, though the display and membrane may not function below -20°C. Output relay rating is 10A at 120VAC, 6A at 277VAC, and 1/8 HP at 120/277VAC. Adjustable parameters include trip delay (2-10 sec), restart delay (manual to 4 min), and over/under voltage thresholds (7-15%). Power consumption is 2.1VA. Packaging includes dust cover and epoxy fill.