The Siemens SIDAC 4EU2752-0EN00-0AA0 is a 3-phase AC output reactor (output choke) rated for a maximum continuous current of 120A and a rated frequency of 3 000 Hz. Its 0.15 mH inductance and 18.4% impedance (Uk) at 400V smooth the voltage spikes from a variable-frequency drive output, protecting motor windings from reflected-wave damage on long cable runs. The IP00 open-frame construction means it mounts inside a cabinet — not in a washdown zone — and connects via flat-type terminals for high-current bus bars or cable lugs.
The 120A maximum continuous current (Ithmax) is the thermal limit at 40°C ambient; derate above that. The 108A rated current (I LN) at 400V with 3 kHz switching is the real-world operating point for a drive output — match it to the motor full-load current, not the drive rating. The 3 kHz rated frequency matches the switching frequency of many PWM drives; running a lower carrier frequency is fine, but exceeding it increases core losses. Total power loss of 290 W (160 W coil + 130 W iron) means the reactor dissipates heat into the cabinet — account for this in your thermal design. Thermal class H (180°C) insulation gives headroom for overloads.
Dimensions are 0.27 m wide × 0.24 m tall × 0.18 m deep — a substantial block that needs a DIN-rail or base-plate mount inside the cabinet. The flat-type terminals accept bus-bar or lug connections; plan for M8 or similar hardware. IP00 means no ingress protection — keep it dry and away from conductive dust. The 3-phase AC input/output is straightforward: line side to the drive output, load side to the motor cable.