The Siemens SIDAC 4EU3052-0AS00-1BA0 is a 3-phase output reactor (choke) rated for a maximum continuous current of 183A and a switching frequency of 5.8kHz. The 0.1mH inductivity and 20% impedance (UK) are sized to limit the dV/dt and peak currents from a VFD's PWM output into the motor cable — protecting the motor windings from reflected wave voltage spikes on long cable runs. The 5.8kHz switching frequency rating means this reactor is tuned for drives running a carrier frequency in that range; running a drive at 4kHz or 8kHz changes the impedance profile and derating may apply.
Where it fits — panel and environmental constraints
The 0.3m width, 0.26m height, and 0.21m depth (300 x 260 x 210 mm) determine the panel floor space; plan for clearance around the flat-type terminals for cable bending radius. Ambient temperature rated at 40°C; thermal class H insulation (180°C rated) gives headroom for overloads, but the 183A maximum assumes the 40°C ambient — derate for higher cabinet temperatures.
Termination and wiring note
Main circuit connection uses flat-type terminals — not ring lugs or screw-clamp. Verify the terminal width and hole pattern against your cable lug before panel build. The 3-phase design is for AC voltage only (Type of voltage: AC).