The Siemens 4EU5021-0AA00 is a commutating choke (also called a line reactor or DC-link choke) designed for converter applications. It handles 1640 A continuous AC current across three phases at 575 V AC, with a DC-rated current of 2009.8 A. The 0.025 mH inductance limits current rise and reduces harmonic distortion on the converter input or output. Rated for 60...50 Hz operation, this choke dissipates 1300 W in the coil and 402 W in the iron core at full load.
This is a panel-mount component with IP00 protection — no enclosure, so it requires a cabinet that keeps dust and moisture off the windings. Dimensions are 0.518 m wide, 0.318 m deep, and 0.565 m high. The flat-type terminals accept busbar or large cable lugs; plan for adequate bending radius and clearance around the connections. Thermal class H (IEC 60085) means the insulation system withstands 180 °C hot-spot temperature — suitable for high-ambient environments up to 40 °C rated ambient. The choke is designed for continuous duty at that rating; forced ventilation in the cabinet is recommended given the 1.7 kW total heat loss.