R-K Electronics, Inc. Protection Relays & Systems DPM-12D-T

The DPM is a digital three-phase voltage monitor designed to monitor line voltages from 200VAC to 600VAC, with output relay contacts rated at 10 amps at 120VAC and 6 amps at 277VAC. It operates with a 12VDC supply voltage, has a surface mount case with dimensions of 480mm x 479mm x 480mm, and uses push-on tabs for line-side and control-side termination. The unit features a 16-character, two-line backlit LCD display, membrane controls, and programmable thresholds for over/under voltage (7% to 15%), phase imbalance (3% to 10%), and trip delays (2 to 10 seconds). It retains settings and fault history during power loss, and operates in temperatures from -40°C to 65°C with display functionality limited above -20°C. The device is listed and consumes 2.1VA. The DPM-12D-T variant, with a 12VDC supply and tab termination, is supported by this series specification.