Mitsubishi Electric MR-J3-40B Servo Amplifier

The Mitsubishi Electric MR-J3-40B Servo Amplifier delivers 400 W of precise servo drive power for synchronized multi-axis motion in automation systems. It runs on 200–230 V AC, communicates over SSCNET III fiber optic network for high-speed control, and supports position, speed, and torque control with high-resolution encoder feedback. Panel-mounted and forced-air cooled, this unit is part of the MELSERVO-J3 series and is compatible with Mitsubishi HF and HG servo motors, commonly used in CNC machines, robotics, semiconductor equipment, and packaging lines for networked multi-axis control; maintenance teams, OEMs, and integrators rely on it for repair, retrofit, or replacement. Common replacements include MR-J4-40B, MR-J3-60B, and MR-J2S-40A.