The Siemens 4EU3022-2AA00-0AA0 is a three-phase commutating choke — a line reactor — built for converter input circuits. That 68 µH inductance (0.000068 H) and 4% relative inductive voltage drop tell you it's sized to limit current rise and smooth the DC bus ripple on a hefty drive or rectifier front end. Power loss breaks into 220 W in the coil and another 143 W in the iron core — 363 W total heat you need to vent. The Class H insulation (180 °C hot-spot) means it can run hot, but IP00 open-frame construction means it belongs inside a ventilated cabinet, not out in the washdown zone.
Lifecycle stage is listed as mature — no active phase-out notice, but not a new-design recommendation either.
Dimensions are 0.3 m wide, 0.269 m tall, 0.211 m deep — a sizable block, roughly the footprint of a small briefcase. Main circuit connections use flat-type terminals, so you're landing bus bars or heavy cable lugs, not wire ferrules. Plan for adequate clearance around the IP00 live parts inside the enclosure. The choke is designed per EN 61558-2-20, the standard for separating transformers and chokes for converter applications. Operating ambient temperature is rated at 40 °C; derate if your cabinet runs hotter.