Mitsubishi Electric MR-J2-350CT Servo Amplifier

The Mitsubishi Electric MR-J2-350CT is a high-capacity AC servo drive amplifier from the MELServo MR-J2 family that delivers precise speed, torque, and position control for large servo motors in demanding automation environments. Designed for CNC machines, heavy-duty manufacturing equipment, and automated production lines, it accepts 200–230 VAC input (single-phase or three-phase), runs at 50/60 Hz, and provides about 17 A of output current with a three-phase output of roughly 170 V, capable of commanding frequencies from 0 to 360 Hz. With 3.5 kW of rated output power, a rated motor speed near 3000 RPM and a max motor speed around 5000 RPM, this servo amplifier serves as the core for servo motor control across position, speed, and torque applications. It is discontinued by the manufacturer, but remains a common upgrade or replacement option for legacy MELServo installations, alongside Mitsubishi MR-J2S-350A, MR-J3-350B, and MR-J4-350B. The part number is MR-J2-350CT, and its role is to replace or modernize existing MELServo drives in precision automation systems.