Mitsubishi HK-KT43G7-1-45 Regenerative Braking Resistor for MELSERVO J4 Series

The Mitsubishi HK-KT43G7-1-45 is a regenerative braking resistor converter unit designed for use with the MELSERVO J4 series servo amplifiers. This unit provides controlled energy dissipation during motor deceleration and braking, converting excess regenerative energy into heat through its built-in resistor element. It features a rated output of 500 W (0.5 kW) and a resistance value of 3.2 Ohm, making it suitable for mid-range servo drive applications. The HK-KT43G7-1-45 is compatible with both 100 V and 200 V AC supply voltages, offering flexibility across different power configurations commonly found in Mitsubishi MELSERVO J4 servo systems. It serves as an equivalent to the Mitsubishi MRRB5R regenerative braking resistor. This unit is typically employed in automated machinery, CNC equipment, and motion control systems where reliable regenerative energy absorption is required to protect the servo amplifier during rapid deceleration, emergency stops, or high-inertia load braking cycles.