The Siemens SIDAC 4EU3052-0AN80-4BA0 is a 3-phase output reactor (choke) designed for the motor side of a variable-frequency drive. Its job is to limit the rate of voltage rise (dv/dt) and smooth the current ripple that PWM switching creates, which protects the motor insulation and reduces bearing currents. This is not a line reactor — it goes between the drive output and the motor cable. Rated for 80 A AC maximum continuous current and 72 A operational current at 400 V, with an inductance of 0.2 mH. The switching-frequency rating of 8 kHz matches the typical IGBT carrier frequency in modern drives, and the fundamental output range is 1 200 Hz — covering most induction and permanent-magnet motor speeds.
IP00 means it is an open-frame component — no enclosure. It mounts inside a panel or cabinet, sized for the 0.3 m width, 0.26 m height, and 0.21 m depth. The flat-type terminals (busbar-style lugs) are intended for bolted connections, not screw-clamp wire terminations. Plan for busbar or ring-tongue cable lugs on the incoming and outgoing connections. Thermal class H insulation (180 °C) with a 40 °C ambient rating gives headroom for the core heating that occurs under PWM load. If your cabinet ambient runs above 40 °C, derate the continuous current — the H-class winding can take the temperature, but the core saturation limit doesn't move.