Mitsubishi HK-KT43G5-1-33 Regenerative Braking Resistor for MELSERVO J4 Series

The Mitsubishi HK-KT43G5-1-33 is a regenerative braking resistor unit designed for use with the MELSERVO J4 series servo amplifiers. It provides controlled energy dissipation during deceleration and braking cycles, converting excess regenerative energy into heat to protect the servo drive system from overvoltage conditions. The unit has a rated output of 500 W (0.5 kW) and a resistance value of 13 Ohm. It is compatible with both 100 V and 200 V AC supply voltages, offering flexibility across different installation environments. The HK-KT43G5-1-33 is functionally equivalent to the Mitsubishi MR-RB50, making it a suitable replacement or alternative in existing MELSERVO J4 configurations. Typical applications include CNC machinery, automated production lines, packaging equipment and other motion-control systems where Mitsubishi MR-J4 servo amplifiers are installed. Proper selection and installation of a regenerative braking resistor is essential for reliable servo system operation, particularly in applications with frequent or high-inertia deceleration demands.