The Allen-Bradley 150-C317NBR SMC-3 is a highly efficient solid-state motor controller designed for optimal performance in industrial applications such as pumps, chillers, compressors, crushers, and conveyors. This 3-phase, open-enclosure unit operates with a control voltage of 24V AC/DC and accommodates a rated voltage of 200-460V AC, supporting a maximum frequency range of 50-60 Hz and a current rating of 317 A. Notable features include five operational start-stop modes—such as soft start, soft stop, and current limit start—alongside advanced protections like electronic motor overload, phase reversal, and an intelligent response to phase imbalance, all equipped with a user-friendly interface that includes an LED indicator, reset button, and a rotary switch for easy motor full-load amperage setup.