Schneider Electric's Altivar ATV18U18N4U is a compact three‑phase variable‑speed drive from the Altivar 18 family, designed for small motors and 400–460 V three‑phase operation, delivering about 0.75 kW (roughly 1 hp) of output with a rated current near 2.1 A. It measures about 149 × 184 × 157 mm and weighs around 2 kg, making it a space‑efficient solution for integrated automation tasks that require motor speed control on a 3‑phase, high‑voltage supply. This model has been discontinued and is listed as replaced by the Altivar ATV320U07N4C, reflecting Schneider Electric's shift to newer compact drives.
