R-K Electronics, Inc. Protection Relays & Systems TVM-300-20-2000

The TVM-300-20 is a three-phase voltage relay for monitoring line voltage, phase loss, and phase rotation in motor applications. It is designed for a 350 to 420VAC, 3Ø range, with ±13% over/under voltage thresholds. The relay has 10A contacts rated for 250VAC, 30VDC, and offers 0.5-second fixed pick-up and drop-out delays. It mounts as a plug-in device with an 8-pin octal termination and includes a status LED. Operating temperature ranges from 0°C to 40°C, and it consumes 1.5VA. The unit weighs approximately 4.5 ounces and is packaged with a dust cover.