The Siemens SIDAC 4EU2432-0EE00-0AA0 is a 3-phase output reactor rated for 40 A continuous, with a switching frequency of 8000 Hz and an inductance of 0.25 mH. It's designed to sit between a variable-frequency drive and the motor, smoothing the PWM waveform and limiting voltage spikes that can degrade motor winding insulation over time. Thermal class H insulation (180 °C continuous rating) gives it headroom in high-ambient cabinets, though the rated ambient is 40 °C.
The 40 A maximum is the continuous current rating; it matches the output of a drive sized for a 30–40 A motor load. The 8000 Hz switching frequency tells you this reactor is tuned for IGBT-based drives running a typical 4–8 kHz carrier — it will suppress common-mode and differential-mode noise at that frequency band. The 0.25 mH inductance, combined with a 20.4 % voltage drop (UK) at rated current, means it's a moderate-impedance choke — enough to limit dv/dt and reduce bearing currents without dropping excessive voltage under load. Power loss splits into 100 W in the coil and 80 W in the iron core, so total dissipation is 180 W at full load; factor that into your enclosure thermal budget.
Integration notes
Dimensions are 0.22 m wide, 0.21 m tall, and 0.13 m deep — it's a compact block for a 40 A reactor. The main circuit connects via flat-type terminals, so you'll need ring or fork terminals sized for the lug. IP00 means no ingress protection; mount it inside a cabinet with at least IP54 to keep dust and moisture off the windings. The flat connectors are sized for the 40 A rating; torque them to the manufacturer's specification (not listed here, but standard for the terminal type).