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

The TVM-300-20 is a three-phase voltage relay designed to protect motors by monitoring line voltage, phase rotation, and phase loss. It has a plug-in, 8-pin octal package with a dust cover and weighs approximately 4.5 ounces. It operates on 350 to 420VAC, 3Ø, with a fixed 0.5-second pick-up and drop-out delay. The relay has 10-amp contacts rated for 250VAC, 30VDC, and supports 1/2 HP at 250VAC or 1/3 HP at 125VAC. It functions within an operating ambient temperature range of 0°C to 40°C and includes a status LED. The device is listed and requires a 600V OT-08 socket.