Schneider Electric ATV320U40N4B Variable Frequency Drive 4kW Altivar Machine AC Drive for Industrial Motors Product Overview The Schneider Electric ATV320U40N4B Variable Frequency Drive is a compact and versatile AC drive from the professional Altivar Machine series, specifically engineered for general industrial motor control applications. This 4kW drive provides refined and user-friendly motor regulation solutions tailored for standard machinery and automated equipment