R-K Electronics, Inc. Protection Relays & Systems TVM-200-10

The TVM-200 is a three-phase voltage relay designed to monitor line voltage between 200 and 250VAC, with plug-in mounting and an 8-pin octal termination. It provides protection against overvoltage, undervoltage, phase loss, and incorrect phase rotation, with a fixed 0.5-second delay for pick-up and drop-out. The output contacts are rated at 10A at 250VAC and 30VDC, and include a status LED. Operating temperature ranges from 0°C to 40°C, with storage from -40°C to 85°C. The unit weighs approximately 4.5 oz and includes a dust cover. The relay energizes only when all phases are present, voltages are within the specified range, and phase rotation is A-B-C.