R-K Electronics, Inc. Protection Relays & Systems TVM-200-20-2000

The TVM-200-20 is a three-phase voltage relay designed to protect motors by monitoring line voltage, phase rotation, and phase loss. It is a plug-in device with an 8-pin octal base and a dust cover, weighing approximately 4.5 ounces. It operates on 200 to 250VAC, 3-phase, with a fixed 0.5 second pick-up and drop-out delay. The output contacts are rated at 10 amps at 250VAC, 1/2 HP at 250VAC, 1/3 HP at 125VAC, and 10 amps at 30VDC. It functions within an operating temperature range of 0°C to 40°C and includes a status LED that indicates normal operation. The relay activates when all phases are present, voltage is within ±13% of nominal, and phase rotation is A-B-C.