The SIDAC 4EU2532-0BQ08-0AA0 is a 3-phase filter reactor rated for 31.5 A continuous at 400 V AC, 50 Hz, delivering 25 kvar of reactive power. Its 5.67% relative throttling factor means it's sized to limit harmonic currents and voltage notching in a typical 400 V distribution — common upstream of variable-frequency drives or large rectifier loads. The 0.0017 H inductance and 210 Hz resonant frequency place it in the line-reactor class for 6-pulse drives, not a tuned harmonic filter. IP00 means it's an open-frame component — no enclosure, no gaskets. It mounts inside a panel or cabinet where the environment is clean and dry. Thermal class H (180 °C) insulation gives headroom for sustained harmonic heating. The 40 °C ambient rating is the design point; derate above that per IEC 60085 guidelines for class H.
At 0.225 m wide × 0.21 m tall × 0.16 m deep, this reactor occupies a footprint comparable to a small contactor or soft-starter. The 35 A maximum rating is the thermal limit; the 31.5 A rated value is the continuous duty point at 40 °C ambient. In a panel, plan for free air around the core — class H insulation runs hot, and the IP00 frame relies on cabinet ventilation, not a fan.