Ask for availability. The Rexroth RD52.1-4B-055-L-V1-FW is a three-phase AC drive converter from the RD 500 series, designed for controlling and monitoring electric motors in industrial applications such as machine tools, hoist systems, packaging equipment, and assembly lines. Operating with a nominal connecting voltage of 3 x AC 380-480 V, it delivers a rated power of 55 kW and utilizes forced air cooling to maintain optimal performance. The unit features a built-in brake chopper, enhancing its functionality in regenerative braking applications. With a pulse frequency of 4 kHz and a rated current of 129 A, it ensures precise motor control. The device weighs 52 kg and is suitable for operation up to 1,000 meters above sea level, with an ambient temperature range up to 40°C. This drive converter is ideal for applications requiring reliable and efficient motor control solutions.