The Siemens 4EU3622-3BA00-0AA0 is a three-phase commutating choke (line reactor) designed for converter input circuits. It limits current rise and reduces harmonic distortion on the line side of a variable-frequency drive or DC drive converter. Rated 319.5 A continuous (355 A maximum) at 690 V AC, 50 Hz, with an inductance of 0.00014 H and a relative inductive voltage drop of 4%. The part carries a DC rated current of 435 A, which means it can also be used on the DC link of a converter if the application calls for a DC choke — though the primary application is AC line-side commutation. Thermal class H insulation system, rated ambient 40 °C. Power loss: 280 W in the coil, 210 W in the iron core.
Dimensions are 0.35 m wide × 0.321 m tall × 0.227 m deep, a substantial footprint that needs clear space for airflow and terminal access. Main circuit connections are flat-type terminals (bus-bar style), not screw clamps or spring cages. Plan for bolted bus-bar or cable lugs sized for the 355 A continuous rating.