What the ratings mean for fit
The Siemens SIDAC 4EP4011-0AK00 is a 3-phase AC output reactor rated for a maximum continuous current of 40 A and a switching frequency of 4 kHz. 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.
Lifecycle and sourcing reality
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. Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.