The Siemens 4EU3652-5UC08-0AA0 is a three-phase mains choke (Netzdrossel f. FU) rated for 450 A continuous with a maximum of 500 A, designed for line-side installation ahead of a frequency converter. It operates on 400/480 V AC at 50 to 60 Hz and delivers a relative inductive voltage drop of 4% at rated current — the figure that governs how much harmonic attenuation and voltage sag the choke introduces into the drive's input circuit.
The 450 A rated current (500 A maximum) sets the continuous load capacity for a 3-phase AC line feeding a variable-frequency drive. The 4% inductive voltage drop is the key selection parameter: it tells you the choke's impedance at line frequency, which determines its effectiveness at reducing harmonic distortion and limiting inrush current. At 40 °C ambient, the total power loss splits between the coil (287 W) and the iron core (170 W) — thermal class H insulation per IEC 60085 means the winding can tolerate sustained temperatures up to 180 °C, so the choke can be mounted in a warm cabinet without derating as long as airflow is adequate.
Integration notes
Dimensions are 0.35 m wide by 0.321 m tall by 0.237 m deep — a substantial footprint that requires panel layout planning. The main circuit connection uses flat-type terminals (flat connector), so the mating bus bars or cable lugs must be compatible with that interface. Inductance is 0.000056 H (56 µH) at rated conditions.