Littelfuse, Inc. Monitor - Relay Output 460

The 460 is a three-phase voltage monitor designed to protect 190-480 V ac, 50/60 Hz motors by detecting harmful power conditions including low, high, and unbalanced voltage, phase loss, and phase reversal. It features an adjustable 1-30 second trip delay, 1-500 second restart delay, and a 2-8% adjustable voltage unbalance trip point with one Form C output contact. The device automatically senses line voltage, has an IP20, NEMA 1 enclosure, and mounts via 35 mm DIN-rail or surface mount. Operating temperature ranges from -20° to 70 °C, and it complies with UL508 and IEC 60947-6-2 standards. Dimensions are 88.9 mm high, 52.9 mm wide, and 59.69 mm deep.