The Siemens 4EU3022-0CA00-0AA0 is a three-phase commutating choke (also called a line reactor or converter reactor) designed to sit between a converter and the AC line, limiting current rise rates and reducing harmonic distortion. Rated for 690 V AC and 225 A continuous, with a maximum of 250 A, it handles the full-load current of a substantial drive or converter system. The 0.15 mH inductance at 4% voltage drop (relative inductive drop) means it provides enough impedance to smooth commutation notches without dropping excessive voltage under load — a typical design target for industrial converter front-ends. The peak current rating of 313 A (and a DC-rated value of 306.3 A) tells you the choke can handle short-duration overloads and DC-link ripple without saturating the core. Power loss splits into 240 W in the coil and 130 W in the iron core — 370 W total at rated conditions — which means panel ventilation or derating may be needed if ambient exceeds 40 °C. The thermal class H insulation (IEC 60085) allows a 180 °C hot-spot temperature, giving headroom for sustained operation in warm cabinets.
This is an IP00 open-frame component — no enclosure, so it mounts inside a panel or cabinet where the environment is clean and dry. The flat-type terminals (flat connector) accept busbar or large cable lugs; expect to land 3-phase power conductors sized for 225 A continuous. Dimensions are 0.3 m wide by 0.269 m tall by 0.211 m deep, which fits a standard 800 mm wide enclosure with room for side cable ducts.