Rockwell Automation's Allen-Bradley SMC-50 smart motor controller is the latest generation of solid-state motor controllers. This release includes a newly designed three-phase, fully solid-state, silicon-controlled rectifier (SCR) power structure. The SMC-50 controller is designed for customer flexibility and combines advanced monitoring and protection features, multiple start and stop options, and expandable control inputs and outputs. Rated at 200V-690V AC and with software from 90 to 520 amps, the SMC-50 controller is ideal for controlling motor speed and torque in a range of normal-duty and heavy-duty applications.