Allen-Bradley 150-A24NB is an SMC-2 Soft Start Motor Controller for three-phase motors, rated at 24 A and 400–480 VAC input, typically representing about 15 HP at 480 VAC. As part of the SMC-2 family, it provides soft-start functionality to sequence motor start-up in industrial automation applications, offering 3‑phase operation with a 50/60 Hz supply. It is commonly listed in open-style configurations by distributors and is suitable for motors in conveyors, pumps, fans, and other equipment where controlled acceleration and reduced electrical inrush are beneficial in 400–480 VAC systems.
