The Siemens 4EP4010-0LS30 is a 3-phase mains choke — a Netzdrossel — rated for 80 A maximum continuous current (72 A rated value) at 500 V AC, 50/60 Hz. The 0.26 mH inductance with a 3% relative inductive voltage drop means it smooths line-side harmonics and limits inrush current for drives or converters.
Dimensions are 0.219 m wide, 0.179 m high, 0.143 m deep. The main circuit connects via free cable endings — no terminal block, so plan for field wiring or a junction point in the panel. The choke is designed for DIN-rail or baseplate mounting inside a standard industrial enclosure. Ambient temperature rating of 40 °C is the baseline; derate above that per the thermal curve.