Yaskawa Electric Corporation UZBAB Line Reactor

The Yaskawa UZBAB (UZBA-B series) line reactor is a 400–440 VAC, 3‑phase AC reactor designed to reduce harmonics, limit inrush current, and stabilize incoming power in industrial motor control and CNC systems. With 1.06 mH of inductance and a 20 A rated current at 50/60 Hz, this panel-mounted unit is constructed for natural convection cooling in rugged industrial environments. Commonly deployed in CNC machines, servo drives, and VFD systems, it suppresses voltage spikes and harmonic distortion to improve drive longevity and overall system reliability in high-load or noisy electrical environments. Manufactured by Yaskawa Electric Corporation, the UZBAB (UZBA-B series) is typically offered as new surplus / aftermarket equipment and remains a legacy design that is still widely used in replacement markets for protection of sensitive electrical equipment. Applications include CNC machines, robotic equipment, and automated panels where clean, stable power supports precision and longevity of drives and motors.