The Siemens 4EU3052-5UB00-0AA0 is a 3-phase mains choke (Netzdrossel f. FU) designed for the input side of a frequency converter. It smooths line harmonics, limits inrush current, and protects the drive's DC bus from voltage spikes. Rated 504 A continuous with a 560 A maximum, it handles the full-load current of a large motor drive without saturating. Inductance is 0.000032 H per phase at 504 A rated current.
Mounting and thermal class — what IP00 means in a panel
IP00 means the choke has no enclosure — it is a bare magnetic assembly intended for installation inside a grounded metal cabinet. The footprint is 0.3 m wide by 0.269 m tall by 0.221 m deep, so it needs a sidewall or baseplate mount with clearance for airflow and bus-bar connections. Thermal class H (IEC 60085) means the winding insulation can sustain 180 °C hot-spot temperature. That headroom allows the choke to run at 504 A in a 40 °C ambient without derating, even with the combined copper and iron losses of 230 W + 86 W = 316 W total heat to vent out of the enclosure. Primary connections are flat-type terminals (flat connector per) — expect bus-bar or heavy-gauge cable lugs, not a screw-clamp block. Verify your panel's bus-bar drilling pattern matches the terminal pitch before committing the BOM.
The choke carries UL/CSA recognition per EN 61558-2-20, which covers safety requirements for chokes and reactors. This means it is accepted for panel builds destined for North American and Canadian installations without additional agency review.