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The Allen-Bradley 150-B54NBRA is an advanced smart motor controller from the SMC Dialog Plus family, engineered to provide microprocessor-based starting for three-phase squirrel-cage induction motors. Designed to enhance operational efficiency, it supports motor ratings between 5 to 100 horsepower at a current rating of 54 Amps with 480 Volts AC, ensuring smooth acceleration without the drawbacks of arcing or chattering. Featuring integral LCD and keypad for easy programming and control, this controller offers various starting modes including full voltage, dual ramp, current limit, and soft start modes. It includes advanced protection features such as electronic motor overload protection, stall detection, and dynamic phase rebalancing to prevent mechanical damage and promote longevity. The devices open design is suitable for a 0 to 50 degrees Celsius environment, and it supports seamless integration with its SCANport Communication for enhanced programmability and monitoring.