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The Allen Bradley 150-B500NBD, part of the SMC Dialog Plus series, is a robust controller designed for demanding applications with a rating of 500 Amps and support for both 3 and 2 wire control. It operates efficiently with an input voltage range of 200 to 460 Volts AC and delivers an output suitable for motors ranging from 4 to 400 horsepower. The controller features a user-friendly interface with a 5-button keypad and a backlit two-line LCD display for easy programming and parameter monitoring. Additional communication capabilities are available via an on-board serial communication port, while three auxiliary contacts provide versatile functionality. The unit maintains optimal performance within temperatures ranging from 0 to 50 degrees Celsius and humidity levels of 5 to 95%, offering reliability in various environments with dimensions of 23.17 x 20.0 x 12.23 inches and a weight of 90 pounds.