The Schneider Electric Altivar VW3A4571 is a three-phase line choke rated at 220 A with 0.23 mH inductance, designed to reduce current harmonics on variable-speed drive inputs. It dissipates 330 W of thermal losses and carries a maximum current of 1.65 × nominal for 60 seconds — enough headroom for short overload events on a conveyor or pump drive.
This part is marked obsolete by the manufacturer. If you are freezing a new design, look for an active Altivar line choke with equivalent 220 A rating and 0.23 mH inductance; the physical footprint (385 mm wide × 245 mm deep × 440 mm high) and terminal size (accepts bare wire up to 13 mm diameter) are the key fit checks.
The 220 A rated current (In) sets the continuous RMS limit for a three-phase drive input. The 0.23 mH inductance determines the impedance at line frequency (50/60 Hz) and therefore the harmonic attenuation — higher inductance gives more suppression but also a larger voltage drop (5 % at rated load per spec). The 330 W thermal loss drives panel ventilation: at full load the choke dumps about the same heat as a small soldering iron, so forced airflow or spacing from other heat-sensitive components is worth planning. Operating altitude derating starts at 1000 m (1 % per 100 m above), and ambient derating kicks in above 45 °C (2 % per °C up to 55 °C).
Integration Notes
IP00 — no enclosure protection on the choke or terminals. Clearance distance is 5.5 mm (IEC 60664), creepage 11.5 mm, pollution degree 2.