The Siemens 4EU3622-3CA00-1BA0 is a 3-phase commutating choke (line reactor) for converter input circuits, rated 800 A at 400 V AC, 50 Hz. It limits current rise and reduces harmonic distortion on the line side of a variable-speed drive or rectifier. The 26 µH inductance and 4 % relative inductive voltage drop are sized for the converter's commutation notches — not a general-purpose line filter.
The 800 A continuous AC rating defines the maximum steady-state line current this choke can carry without exceeding a 40 °C ambient. The 1 000 A peak current handles short-duration converter inrush without saturating the core — critical for ride-through on a loaded DC bus. Total power loss is 433 W (293 W coil + 140 W iron core) at rated conditions. That heat must be rejected from the panel — IP00 means no enclosure, so forced air or a cabinet fan is expected. Class H insulation (per IEC 60085) allows a 180 °C hot-spot limit, giving thermal headroom in a crowded cabinet.
Where this choke goes in the panel
Mounts on the panel floor or a support rail — no DIN-rail clip, so plan for bolted flat-bar connections. The flat-type terminals accept busbar or cable lugs; dimensions 350 mm wide × 321 mm tall × 227 mm deep. That footprint occupies roughly the space of a 200 A contactor plus its overload block. Place it between the line-side fuses and the drive input to catch commutation spikes before they reach the mains.
Listed as Active in Siemens' current portfolio. No phase-out notice or last-time-buy date on record.