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

The PRR-300 is a phase loss and reversal relay for 380VAC to 415VAC, 3Ø systems, with a surface mount design and screw terminals. It features a SPDT or DPDT output relay rated for 7 Amps at 240VAC, 100,000 electrical cycles, and 10,000,000 mechanical cycles. The relay de-energizes upon phase loss (18% voltage drop) or incorrect phase rotation, with a fixed 5-second pick-up and drop-out delay. Power consumption is 16VA, and it operates within 0°C to 40°C, with storage from -10°C to 85°C. Dimensions are 4.25" H x 2.75" W x 3.75" D, weighing approximately 8 oz. A dust cover is included.