R-K Electronics, Inc. Protection Relays & Systems TVM-100-20

The TVM-100-20 is a three-phase voltage relay for motor protection, monitoring over/under voltage, phase loss, and phase rotation. It has a plug-in, 8-pin octal package with a dust cover and weighs 4.5 ounces. It operates on 100 to 130VAC, 50/60Hz, with a fixed 0.5-second delay for pickup and drop-out. Output contacts are rated for 10A at 250VAC and 30VDC. The relay energizes only when all phases are present, voltages are within ±13% of nominal, and rotation is A-B-C. An LED indicates normal status. Operating temperature is 0°C to 40°C; storage is -40°C to 85°C. The device is listed.