4EU2522-4AA00-0AA0 Commutating Choke, 500V, 112A, 0.33mH

The Siemens 4EU2522-4AA00-0AA0 is a three-phase commutating choke for converter drives, rated for 500 V AC at 50 Hz with a maximum continuous current of 112 A and a rated current of 100.8 A. It delivers 0.33 mH inductance per phase and a relative inductive voltage drop of 4 % at rated conditions — the key figure that governs how much the choke smooths the DC-link ripple and limits current rise during commutation. Peak current capability reaches 225 A, sized for the inrush and transient demands of a converter input stage. The choke is rated for an ambient temperature of 40 °C, with thermal class H per IEC 60085 — that means the winding insulation is good for a 180 °C hot-spot limit, so it holds up to the steam and heat you'd see in a tire-curing press environment or a drive cabinet near a furnace line. Protection class is IP00 — no enclosure, so it's intended for mounting inside a panel or drive cubicle where the live terminals are not exposed to touch. Connections are flat-type terminals, common for bus-bar or cable-lug termination in power sections.