The Siemens 4EU2722-6AA00-0AA0 is a 3-phase commutating choke (line reactor) designed for converter front ends, rated at 162 A continuous with a 180 A maximum through the same winding. It operates at 500 V AC, 50 Hz, and carries a 0.2 mH inductance with a 4% relative inductive voltage drop — that 4% figure is what governs the choke's sizing for harmonic attenuation and di/dt limiting in a drive input stage. The part is IP00 — open-frame, no enclosure — so it mounts inside a cabinet where the panel builder provides the physical protection. Thermal class H (180 °C insulation system) means it handles the 174 W coil loss plus 85 W iron core loss without derating at the 40 °C ambient rating. Termination is via flat-type connectors (bus-bar or cable lug interface), not screw clamps — factor that into the bus-bar drilling pattern if you're swapping from a different brand's choke.
Physical footprint: 0.27 m wide, 0.248 m tall, 0.187 m deep. Panel layout needs to clear those dimensions plus the flat-connector projection for the main circuit terminals. The 3-phase winding is a single magnetic assembly — no separable cores — so plan for a single mounting footprint, not three separate chokes.