What this reactor does on your line
The Siemens SIDAC 4EU3632-0MF08-0AA0 is a 3-phase filter reactor rated for 85.5 A continuous (95 A maximum) at 690 V AC, 50 Hz. It's the inductive leg of a harmonic filter bank — the 7% relative throttling factor and 0.0011 H inductance are tuned to suppress the 5th and 7th harmonics that VFDs and rectifiers throw back onto the line. The 100 kvar reactive power rating tells you the capacitor bank it pairs with; the 189 Hz resonant frequency is where the trap is centered. This is a line-side component, not a load-side choke — it sits between your distribution and the drive's input, cleaning the current waveform before it hits the upstream transformer. Thermal class H (IEC 60085) means the winding insulation holds up to 180 °C hot-spot. With 315 W of power loss at rated load, this reactor will run warm — plan for natural convection clearance around the enclosure. IP00 means no ingress protection; it's intended for inside a cabinet, not on the plant floor.
Dimensions: 0.35 m wide, 0.321 m tall, 0.227 m deep. Main circuit connections are flat connector / screw-type terminals — expect bus-bar or ring-tongue lugs on the line and load sides. No DIN-rail clip; this is a bolt-down chassis mount inside the panel. Leave clearance for the 315 W heat dissipation and for the capacitor bank it's paired with.
Signal integrity note
If you're chasing harmonic noise that's coupling into nearby sensor cables, check the shield ground first — but the root cause is often the unfiltered line feeding the drive. This reactor's 189 Hz resonant trap knocks down the dominant 5th (250 Hz) and 7th (350 Hz) harmonics on a 50 Hz system. Install it as close to the drive input as practical; long unshielded runs between the reactor and the drive re-radiate the switching noise you're trying to suppress.