The Siemens 4EU3622-2DA00-0AA0 is a three-phase commutating choke (line reactor) designed for the DC link or AC input of a power converter — specifically a 6-pulse or 12-pulse thyristor bridge where it limits the rate of rise of fault current and cleans up line notching. It carries 360 A continuously (rated value) and can handle 500 A peak without saturating the core, so it's sized for a converter output in the 250–315 kW range on a 400 V system. Rated inductance is 92 µH (0.000092 H) with a 4% relative inductive voltage drop at the rated current and frequency — that's the standard impedance for a 4% DC link choke in this power class. The 50 Hz operating frequency matches line-side use in most industrial grids; it also works on 60 Hz systems with a slightly lower impedance, but the 4% drop figure shifts accordingly.
Physical build and integration constraints
Open-frame construction, IP00 — no enclosure, so it mounts inside a cabinet or drive cubicle where the panel provides the IP rating. Dimensions: 350 mm wide, 321 mm tall, 227 mm deep. That's a substantial footprint; you'll need a dedicated mounting plate and enough clearance around the flat-type terminals for the busbar or cable lugs. The terminals are flat connectors, not screw clamps — expect to bolt copper bars directly. Thermal class H (180 °C winding hot-spot) according to IEC 60085, with a 40 °C ambient rating. The copper losses alone are 293 W, plus 171 W in the iron core — total internal dissipation around 464 W. That heat has to leave the cabinet; forced ventilation or a larger enclosure than the choke's own volume is assumed.
The part is listed under EN 61558-2-20 (safety of power transformers, reactors, and power supply units — particular requirements for small reactors). That standard covers the dielectric strength, thermal class, and short-circuit withstand. No UL or CSA mark appears in the record, so verify local code acceptance if your panel requires a listed component.