Mitsubishi HK-KT43BG1-1-5 Regenerative Resistor Unit for MELSERVO J4 Series

The Mitsubishi HK-KT43BG1-1-5 is a regenerative resistor unit designed for use with the MELSERVO J4 series servo drive systems. This unit features a rated output of 3,900 watts (3.9 kW) and a resistance value of 4 ohms, operating on a 400-volt AC power supply. It serves as a functional equivalent to the Mitsubishi MRRB13V4 regenerative resistor. Regenerative resistor units are essential components in servo drive applications where excess kinetic energy generated during motor deceleration must be safely dissipated as heat. By absorbing this regenerative energy, the unit protects the servo amplifier from overvoltage conditions and ensures stable, reliable operation during frequent acceleration and deceleration cycles. The HK-KT43BG1-1-5 is suitable for integration into Mitsubishi MELSERVO MR-J4 series servo systems commonly deployed in industrial machinery, CNC equipment, packaging lines, and other automated manufacturing processes that require precise motion control with high-performance braking capability.