R-K Electronics, Inc. Protection Relays & Systems TVM-300-10-9000

The TVM-300 series is a three-phase voltage relay designed for monitoring line voltage, phase loss, and phase rotation in 300VAC systems, with a nominal range of 350 to 420VAC. It features a plug-in octal (8-pin) package, weighs approximately 4.5 ounces, and includes a status LED. The relay has a 10-amp contact rating at 250VAC and 30VDC, with a fixed 0.5-second pick-up and drop-out delay. Operating ambient temperature ranges from 0°C to 40°C, with storage from -40°C to 85°C. It is rated for 50/60Hz and consumes 1.5VA. The device requires an OT-08 socket for installation and is packaged with a dust cover.