What this filter reactor does in the circuit
The SIDAC 4EU2732-0BV08-0AA0 is a 3-phase AC filter reactor rated for 400 V at 50 Hz, carrying a continuous rated current of 62.8 A with a maximum of 69.8 A. Its 0.83 mH inductance and 5.67% relative throttling factor are sized to suppress harmonic currents from variable-frequency drives or other non-linear loads, protecting upstream transformers and switchgear from excess heating. The 50 kvar reactive power rating tells you this reactor is matched to a capacitor bank of that size for detuned filter applications — the 210 Hz resonant frequency places the trap below the 5th harmonic (250 Hz at 50 Hz fundamental), which is the standard tuning for industrial drive networks.
Mounting and integration constraints
At 0.27 m wide × 0.248 m tall × 0.187 m deep, this reactor occupies a substantial footprint — it is not a DIN-rail component. The IP00 rating means it has no enclosure; you must mount it inside a ventilated cabinet or dedicated cubicle where personnel cannot contact live parts. Thermal class H (180 °C insulation system) allows the core and windings to run hot, but the 40 °C ambient rating is the design point — above that, derate the continuous current. Terminals are flat-type screw connectors for the main circuit, sized for lug or bus-bar termination, not ring-tongue on a terminal block.