Mitsubishi MR-J4-500B4-RJ MELSERVO MR-J4 5kW 400V Servo Amplifier

The Mitsubishi MR-J4-500B4-RJ (MR-J4-500B4-RJ) is a high-performance AC servo amplifier from the MELSERVO MR-J4 series, engineered for precise motion control in automated machinery and multi-axis industrial systems. This 400 V class drive delivers a rated output power of 5.0 kW (5000 W) with a rated current of 14 A, operating from a 3-phase 380 to 480 V AC input supply at 50/60 Hz. Built for high-speed deterministic communication, it incorporates a SSCNET III/H fiber-optic interface to ensure synchronized multi-axis control and rapid cycle times. Equipped with an integrated dynamic brake and a built-in regenerative braking resistor, the MR-J4-500B4-RJ provides reliable deceleration handling and enhanced drive protection. The unit features an IP20 degree of protection and is rated to operate in ambient temperatures ranging from 0 to +55 degrees Celsius. It serves demanding industrial applications such as packaging machines, material handling, CNC systems, and textile machinery, delivering optimal torque, speed, and positioning accuracy across the Mitsubishi automation ecosystem.