Mitsubishi HK-KT203WBWS AC Servo Drive Unit MELSERVO-J4 55 kW 400 V Class

The Mitsubishi HK-KT203WBWS is an AC motion servo drive unit belonging to the MELSERVO-J4 series. This converter-powered drive amplifier delivers a rated output of 55 kilowatts with a rated current of 143 amperes and operates in the 400 volt class. It is designed to receive its power supply from a separate converter unit, making it suitable for multi-axis configurations and high-power servo applications. The HK-KT203WBWS features RS-422 and RS-485 serial communication capability for integration with controllers and peripheral devices, and it supports safety unit compatibility for use in applications requiring functional safety. This drive unit is referenced as equivalent to the MR-J4-DU55KA4-RJ ordering designation within the Mitsubishi MELSERVO-J4 product lineup. Typical applications include high-power machine tool axes, large-format material handling equipment, and industrial machinery requiring precise, high-output servo control within the Mitsubishi automation ecosystem.