R-K Electronics, Inc. Protection Relays & Systems SVM-48D-21

The SVM-48D-21 is a single-phase voltage relay designed to monitor AC or DC voltage and operate dry contacts based on over or under voltage conditions. It operates on a 42 to 55VDC input range and is configured for over and under voltage protection with a 13% threshold of nominal voltage. The relay has a plug-in mounting style with an 8-pin octal termination and includes a fixed 0.5-second delay to suppress nuisance tripping. Its contacts are rated for 10 amps at 250VAC or 10 amps at 30VDC. The device consumes 1.5VA, operates in ambient temperatures from 0°C to 40°C, and features a dust cover for environmental protection. Hysteresis is set at 2%.