The Siemens SIDAC 4EU2552-0ED00-4BA0 is a 3-phase AC output reactor — a choke placed between a variable-frequency drive and the motor to smooth voltage spikes, limit dv/dt, and reduce motor bearing currents. It is rated for a switching frequency of 4000 Hz, with a usable range from 0 Hz to 8000 Hz. The inductance is 0.11 mH at 135 A continuous, and the impedance voltage (uk) is 7%. Total power loss is 209.9 W — 121.8 W in the coil and 88.1 W in the iron core — all dissipated at a rated ambient of 40 °C. The insulation system is Class H per IEC 60085, meaning the winding can handle a 180 °C hot-spot temperature, which gives a solid thermal margin for continuous duty in a warm cabinet.
This is an open-frame (IP00) component — no enclosure, no drip shield. Dimensions are 0.22 m wide by 0.21 m tall by 0.16 m deep. The main circuit connects via flat-type terminals, which are common on larger chokes and reactors; plan for busbar or ring-lug terminations, not spring-cage wire clamps.