Mitsubishi HK-KT43BG7-1-45 Regenerative Converter Unit for MELSERVO J4 Series

The Mitsubishi HK-KT43BG7-1-45 is a regenerative resistance converter unit designed for use with the MELSERVO J4 series of servo drive systems. It is functionally equivalent to the Mitsubishi MRRB31, providing regenerative braking energy dissipation to protect the servo amplifier during deceleration and other high-energy return conditions. In servo-driven applications the regenerative converter unit absorbs excess kinetic energy that is fed back from the motor to the drive during braking or rapid speed changes. By safely converting this energy into heat through a braking resistor network, the unit prevents overvoltage faults on the DC bus and ensures stable, continuous operation of the servo system. The HK-KT43BG7-1-45 is intended for integration with Mitsubishi MR-J4 series servo amplifiers and is suited for machine tool, packaging, material handling and general motion-control applications where reliable regenerative energy management is required.