Littelfuse, Inc. Monitor - Relay Output 460-14

The 460-14 is a three-phase voltage monitor for 190-480 V ac, 50/60 Hz systems, designed to protect motors by detecting low, high, unbalanced voltage, phase loss, and phase reversal. It features adjustable 1-30 second trip delay and 1-500 second restart delay, with a 2-8% adjustable voltage unbalance trip point. Unlike the standard 460 model, it is equipped with two sets of contacts: Form A (normally open) and Form B (normally closed), enabling control of two separate circuits, such as a PLC input and an alarm. It mounts on a 35 mm DIN-rail or via #6 or #8 screws, has a polycarbonate enclosure, and meets UL508 and IEC 60947-6-2 certifications. Operating temperature ranges from -20° to 70 °C, with IP20 and NEMA 1 protection. Dimensions are 88.9 mm H × 52.9 mm W × 59.69 mm D, and it weighs 0.7 lb.