R-K Electronics, Inc. Protection Relays & Systems TVM-600-12

The TVM-600 series is a three-phase voltage relay designed to monitor line voltage, phase rotation, and phase loss in electrical systems. It operates on line voltages from 520 to 600VAC at 50/60Hz and features a plug-in, 8-pin octal package with a dust cover. The relay has a fixed 0.5-second pick-up and drop-out delay, consumes 1.5VA, and provides 10A at 250VAC or 30VDC output. It supports over/under voltage detection at ±16% of nominal voltage and enforces correct phase rotation (A-B-C). Operating temperature ranges from 0°C to 40°C, with storage from -40°C to 85°C. The unit includes a status LED and weighs approximately 4.5 ounces.