Mitsubishi MR-J4-15KB AC Servo Amplifier for MELSERVO-J4

The Mitsubishi MR-J4-15KB (MR-J4-15KB) is a high-performance AC servo amplifier engineered for the MELSERVO-J4 series. Designed for demanding motion control tasks, this servo drive utilizes an optical SSCNET III/H communication bus to ensure high-speed, synchronized data transmission between motion controllers and servomotors with minimal wiring. It is built to operate with a 200 V to 240 V AC supply voltage in single-phase or three-phase input configurations. Featuring a rated current of 68 A and a rated output capacity of 11 kW, the MR-J4-15KB offers robust and responsive dynamic motor performance. The unit is housed in an IP20 protective enclosure designed for standard control cabinet integration and operates reliably across an ambient temperature range of 0 to +55 degrees Celsius. Compatible with Mitsubishi MELSERVO systems, this drive is widely deployed in automated manufacturing equipment, packaging machines, CNC machining centers, and multi-axis robotics to deliver accurate positioning and velocity regulation.