The 0.2 mH inductance and 7.6 % impedance (UK) are sized to limit the dV/dt and peak currents reflected back from a PWM drive output — this protects the drive's output IGBTs and motor insulation from voltage spikes on long cable runs. The 40 A rating is the thermal limit at 40 °C ambient; the reactor's total power loss (coil 26.3 W plus iron core 65.2 W) sums to 91.5 W, which must be dissipated in the enclosure. IP00 means no ingress protection — it requires mounting inside a clean, dry cabinet, not in a washdown or outdoor location.
Deployment context
This output reactor mounts via its screw-type terminals (main circuit connection) and sits between a variable-frequency drive output and the motor cable. The 0.21 m width, 0.17 m height, and 0.14 m depth define the panel footprint — allow clearance around the IP00 body for airflow to carry off the 91.5 W total loss. Thermal class B insulation (130 °C continuous) per IEC 60085 means the winding can sustain that temperature rise without degrading the insulation system.
The 4EP4011-0AK00 carries a mature lifecycle stage — it is not in active new-product introduction but remains in the Siemens SIDAC catalog as a standard production item. No official successor order code has been published, so the BOM line stays stable for existing designs.