The Siemens SIDAC 4EP4010-0GS00 is a 3-phase AC output reactor rated for a maximum current of 45 A and a switching frequency of 4000 Hz, with an inductance of 0.27 mH. It is designed to sit between a variable-frequency drive and the motor, smoothing the voltage spikes and limiting the rate of voltage rise (dV/dt) that can otherwise stress motor windings on long cable runs. Connection is via screw-type terminals, which simplifies field wiring without special tooling.
The 4000 Hz switching frequency rating tells you this reactor is matched to IGBT-based drives that switch at 4 kHz — common in modern VFDs. The 0.27 mH inductance provides a specific impedance that, combined with the motor cable capacitance, defines the resonant frequency and the dV/dt attenuation. Thermal class B (130 °C) insulation means the reactor can operate continuously at that temperature rise without degrading the winding insulation. The IP00 protection class means it is not finger-safe and must be housed in an enclosure that provides the required touch protection.
Integration notes
Mounting dimensions: 0.21 m wide, 0.17 m tall, 0.14 m deep. The screw terminals accept standard ring or fork lugs for the main power circuit. Because it is IP00, plan for at least 100 mm clearance around the reactor for airflow and to meet minimum electrical clearance distances per IEC 61558-2-20. The reactor is designed for 400 V AC line-to-line (per the description), so confirm your drive's output voltage matches before wiring.