The Siemens 4EU3622-4CA00-0AA0 is a three-phase commutating choke (line reactor) designed for converter front-ends. It limits current rise and reduces harmonic distortion on the AC line feeding a variable-frequency drive or DC drive. Rated 360 A continuous with a 400 A maximum and 500 A peak capability, it handles the inrush and transient loads typical of industrial drive systems. Inductance is 0.07 mH per phase at 50 Hz, with a relative inductive voltage drop of 4% at the rated current and voltage — a standard figure for commutating chokes that keeps voltage sag within acceptable limits for the DC bus. Operating voltage is 500 V AC, and the part carries a thermal class H (180 °C) insulation system per IEC 60085, meaning the winding can sustain higher temperature rises than class F or B designs — relevant if the choke sits in a warm cabinet or near the drive's heat sink.
Dimensions are 0.35 m wide by 0.321 m tall by 0.227 m deep; verify clearance for the flat-type main circuit terminals (bus-bar or cable lug connection) and for airflow around the core. Total power loss is 475 W (293 W in the coil plus 182 W in the iron core) at rated load and 40 °C ambient. That heat must be evacuated from the enclosure — factor it into the panel's thermal budget and consider forced ventilation if the cabinet is densely packed.
The part is UL and CSA recognized per EN 61558-2-20, which covers the safety of chokes and reactors. That recognition matters for panel builders who need a UL 508A listing on the overall assembly.