The Siemens 4EU2522-8BA00-0AA0 is a 3-phase commutating choke (line reactor) for converter applications, rated at 112.5 A continuous with a 125 A maximum and 156 A peak capability. It operates at 500 V AC, 50 Hz, with a rated inductance of 0.23 mH and a relative inductive voltage drop of 4% at rated conditions. The 4% voltage drop at rated current means this choke is sized for typical drive input filtering — it smooths commutation notches and limits di/dt without dropping excessive voltage under load. The 135 W coil loss and 52 W iron-core loss (187 W total at 40 °C ambient) tell you the thermal load it dumps into the enclosure; plan ventilation accordingly.
This is an IP00 open-frame component — no enclosure, no finger-safe cover. It mounts inside a panel or drive cabinet, wired via flat-type terminals on the main circuit. The 0.16 m depth, 0.225 m width, and 0.21 m height footprint fits a standard cabinet backplate; leave clearance for the flat-terminal connections and airflow over the core and coil. That matters if your drive cycles hard or the ambient inside the cabinet runs above 40 °C — the H-class rating buys headroom without derating the choke.