The Siemens 4EU3022-0EV00-1BA0 is a three-phase mains choke (Netzdrossel f. FU) designed for variable-frequency drive input lines. It filters harmonics and limits inrush current, protecting the drive's rectifier stage. Rated for 162 A continuous at 690 V AC, 60 Hz, with a maximum current of 180 A. Thermal class H insulation (IEC 60085) allows the choke to run hot; the combined copper and iron losses total 661 W at rated load, so plan for airflow or derating in a sealed cabinet.
IP00 means no enclosure — this choke mounts inside a panel or drive cabinet. Dimensions are 0.3 m wide, 0.269 m tall, and 0.221 m deep. Flat-type terminals accept busbar or cable lugs for the main circuit. Ambient temperature rating is 45 °C; above that, derate per the manufacturer's thermal curve. The 0.4 mH inductance is fixed — it's not a tunable reactor.