The Siemens 4EU2722-5AA00-0AA0 is a three-phase commutating choke (line reactor) for converter drives, rated 160 A maximum continuous current and 144 A nominal at 50 Hz, with an inductance of 0.23 mH and a relative inductive voltage drop of 4%. It's built for a 500 V AC system and uses flat-type terminals on the main circuit — no wire lugs, just a flat bus bar connection, which is typical for higher-current reactor installations in drive panels.
The 160 A maximum (144 A rated) at 50 Hz tells you this choke is sized for a drive output or DC-link bus pulling that kind of current continuously. The 4% voltage drop at rated current is the impedance it adds to limit harmonic currents and protect the converter's IGBTs — standard for a commutating duty. The 0.23 mH inductance and 4% drop mean it's a relatively low-impedance choke; it won't drop much voltage under load, so the drive still gets full bus voltage for motor torque. The DC-rated current of 196 A suggests it can handle DC-link ripple as well, though the primary use is AC line side. Thermal class H insulation allows the coil to operate at high temperatures without degrading. The rated ambient temperature is 40 °C. IP00 means no enclosure — it's a bare, open-frame reactor. Not for outdoor or washdown areas.
Footprint: 0.27 m wide × 0.248 m tall × 0.187 m deep. That's about the size of a small shoebox — it'll need a DIN-rail or baseplate mount, plus clearance for the flat-type terminals and airflow around the coil. Power loss is 167 W in the coil plus 85 W in the iron core. Factor this heat into panel cooling.