Mitsubishi MR-J4W2-0303B6 Servo Amplifier for MELSERVO-J4 Series

The Mitsubishi MR-J4W2-0303B6 (MR-J4W2-0303B6) is an AC motion servo amplifier developed for the Mitsubishi Electric MELSERVO-J4 series. Engineered for precision motion control, this servo drive delivers a rated output of 5,000 W (5 kW) with a rated current of 28 A, providing reliable power delivery and dynamic response for demanding automated machinery. The unit operates with a main circuit supply voltage rated at 200 to 240 VAC (200 V class, 220/230 VAC) or 283 to 340 VDC, accepting single-phase (2P), three-phase (3P), or direct DC input configurations. Featuring integrated dynamic braking and a built-in braking resistor, the MR-J4W2-0303B6 ensures safe deceleration and effective energy absorption during regenerative operation. It incorporates CC-Link communication capability for streamlined network integration and offers compatibility with external safety units. Built with an IP20 degree of protection, the drive is rated for ambient operating temperatures ranging from 0 to +55 degrees Celsius. It serves as an equivalent replacement to model MRJ4500GFRJ and is widely used across multi-axis industrial automation, packaging systems, material handling, and CNC machinery requiring accurate speed and torque regulation.