The Allen-Bradley 150-SC3NBR smart motor controller from the SMC-50 series offers robust solid-state performance with a 320 A controller rating and supports three-phase line voltages ranging from 200 to 460V AC at 50 to 60 Hz. Featuring a control voltage of 24V DC with standard inputs and relay outputs, this controller accommodates a broad range of motor applications, including line and delta-connected motors, with horsepower ratings spanning 40 to 250 HP depending on voltage levels. It provides nine selectable starting modes, such as torque control and soft start, alongside energy-saving and comprehensive safety features like SCR control and underload protection, all packaged in a unit measuring approximately 36 x 60 x 14 inches.