The Siemens 4EU3022-3BA00-0AA0 is a three-phase commutating choke for converter applications, designed to limit the rate of rise of current during commutation and to smooth the DC link in variable-speed drives and power converters. It carries a rated AC current of 450 A at 400 V and 50 Hz, with a peak current capability of 563 A. The inductance is 0.05 mH, and the relative inductive voltage drop is 4% at rated conditions.
The 450 A AC rating is the continuous thermal current at 50 Hz — this is the line-side current the choke can carry without exceeding its H-class (180 °C) insulation temperature limit. The 563 A peak rating covers short-duration converter commutation spikes. The 4% voltage drop at rated current tells you how much line voltage is lost across the choke under load — important for sizing the upstream transformer and ensuring the DC bus gets enough voltage. The thermal class H per IEC 60085 means the winding insulation is rated for a 180 °C hot-spot temperature, which is standard for industrial converter chokes handling high ripple content.
This choke is rated IP00 — no ingress protection, so it belongs inside a ventilated cabinet or a dedicated enclosure, not in a washdown area or outdoors. The 0.3 m width, 0.269 m height, and 0.211 m depth give you the footprint for panel layout. Connections are via flat-type terminals — expect busbar or large cable lugs, not screw clamps. The 220 W copper loss plus 92 W iron core loss total about 312 W heat to vent. Mount it with clearance for airflow; derate if ambient exceeds 40 °C.