The Siemens 4EP3200-5US00 is a three-phase mains choke (line reactor) designed for frequency converter input filtering. It is rated for 400/480 V AC, 50/60 Hz, with a maximum continuous current of 3 A and an inductance of 0.0047 H (4.7 mH). IP00 rating means it is an open-frame component intended for installation inside a grounded enclosure — not for exposed or washdown environments.
The 3 A maximum current and 2.7 A rated operational current set the continuous load limit. For a 400 V drive, this choke is sized for a small motor — typically under 1.5 kW output, depending on drive efficiency and load profile. The 4.7 mH inductance at 50/60 Hz provides enough impedance to keep the line-side total harmonic distortion (THD) within reasonable bounds for most industrial lines. The 16.7 W copper loss plus 4.5 W iron loss (total ~21 W) must be dissipated inside the panel; at 40 °C ambient, the thermal class B winding gives a 130 °C hot-spot limit, so natural convection is sufficient if the enclosure is vented.
Dimensions are 0.088 m wide × 0.108 m high × 0.057 m deep. The main circuit connections are screw-type or tab terminals — no DIN-rail clip; the choke is panel-mounted via its core bolts or a bracket. IP00 means it must be housed in an IP54 or higher enclosure in a typical industrial environment. The screw terminals accept standard ring or fork lugs; torque to the manufacturer's recommendation for 2.5–4 mm² conductors.