Square D ATV18U41N4U Variable Frequency Drive

The Square D ATV18U41N4U Altivar 18 variable frequency drive is a 2.2 kW (3 HP) three‑phase inverter designed for 400/460 V motors. It provides adjustable speed and torque control for three‑phase machines with a rated current of 5.3 A at 460 VAC, enabling energy‑efficient motor control in industrial settings. As part of Schneider Electric’s Altivar 18 family, this model supports controlled ramping and reliable startup for small to mid‑size motors in automation projects. Key specifications include 2.2 kW output, 400/460 V three‑phase input, and a compact form factor designed for straightforward integration into standard enclosures. The ATV18U41N4U is typically used where precise motor speed control is required for equipment such as conveyors, fans, pumps, and processing lines, providing programmable speed profiles and fault protection consistent with Altivar drives. By aligning with Schneider Electric’s Square D controls ecosystem, it offers familiar setup, safety features, and compatibility with existing Square D/SCHNEIDER controls and protective devices.