What it is and what it does
The Siemens 4EU3622-7BA00-0AA0 is a three-phase commutating choke designed to sit between a converter (drive) and the AC line, smoothing current ripple and limiting fault rise rates. It carries a maximum continuous current of 315 A and a rated current of 283.5 A at 750 V AC, with an inductance of 0.18 mH. The 4% relative inductive voltage drop at rated current tells you the choke will drop about 30 V under full load — factor that into your DC bus voltage budget.
Where it fits
This is a panel-mount component, not DIN-rail — it bolts in. Dimensions are 0.35 m wide by 0.321 m tall by 0.227 m deep, so plan for a floor-mount or back-panel footprint with clearance for the flat-type terminals on the main circuit. It's rated IP00, meaning no enclosure protection: it belongs inside a cabinet, not on the plant floor exposed to washdown or dust. The thermal class H (IEC 60085) insulation means it's rated for 180 °C hot-spot temperature, which is standard for high-current line reactors in industrial drives.
Key ratings at a glance
Rated for 50/60 Hz line frequency, so it works on 50 Hz or 60 Hz supplies without derating. Power losses break down into 301 W in the coil and 210 W in the iron core — total 511 W to dissipate inside the cabinet. The ambient temperature rating is 40 °C; if your panel runs hotter, expect some derating on the current. The DC-rated current is 386 A, which is higher than the AC rating — useful if you're using this choke on the DC link side of a regenerative drive.