Mitsubishi HK-KT43BG5-1-45 Regenerative Converter Unit for MELSERVO J4 Series

The Mitsubishi HK-KT43BG5-1-45 is a resistance regenerative converter unit designed for use with the MELSERVO J4 series of servo drives. It provides controlled energy dissipation during regenerative braking by converting excess kinetic energy from the servo motor into heat through its built-in regenerative resistor. The unit has a rated output of 100 W (0.1 kW), a resistance value of 82 Ohm, and operates on a 400 V AC supply voltage. In servo-driven motion systems, regenerative energy is produced when a motor decelerates or when a load overhauls the drive. The HK-KT43BG5-1-45 safely absorbs this energy, protecting the DC bus of the servo amplifier from overvoltage faults and ensuring reliable, continuous operation. It is intended for integration with Mitsubishi MELSERVO MR-J4 series amplifiers in applications such as machine tools, packaging equipment, material handling systems, and other automated machinery that requires precise motion control with frequent acceleration and deceleration cycles.