The Siemens 4EU3622-3DA00-0AA0 is a commutating choke (line reactor) for a converter, designed to limit current rise and reduce harmonics on the AC input side of a variable-frequency drive or DC drive. It is a 3-phase choke rated for 405 A continuous, with a maximum current of 450 A and a peak current of 563 A, operating at 690 V AC. The inductance is 0.000082 H (82 µH) per phase, with a relative inductive voltage drop of 4% at rated current and frequency. This voltage drop figure is the key selection parameter: it determines how much the choke reduces the available voltage to the drive — a 4% drop is typical for line reactors used to mitigate harmonic distortion and limit inrush. Rated for 50/60 Hz operation, the choke dissipates 320 W in the coil and 180 W in the iron core at rated load, for a total power loss of 500 W. The thermal class H (IEC 60085) insulation allows a 180 °C hot-spot temperature, which is standard for high-temperature industrial environments.
The choke measures 0.35 m wide, 0.321 m tall, and 0.227 m deep — a substantial footprint that requires a dedicated mounting plate or sub-panel. It is IP00, meaning no ingress protection; it must be installed inside a cabinet with a suitable enclosure rating. The main circuit connections are flat-type terminals (bus-bar style), not screw or spring clamps, so plan for bolted bus-bar or cable lugs. The ambient temperature rating is 40 °C; if the cabinet ambient exceeds that, derate the continuous current per the manufacturer's thermal curve (not provided here, but standard practice for class H insulation).