What it is and what it does
The Siemens 4EP4010-0TS01 is a 3-phase line reactor (choke) rated for 400 V AC, 15.8 A continuous current, with 3.2 mH inductance per phase. It's designed to limit harmonic distortion, reduce voltage notching, and protect drives and other power electronics from line-side transients. Rated for a maximum current of 17.5 A at 100 Hz, the reactor is built to IEC 61558-2-20 and carries thermal class F (155 °C) insulation per IEC 60085. The IP00 enclosure means it's an open-frame component intended for installation inside a cabinet or panel — not for washdown or outdoor exposure. Connection is via screw-type terminals on the main circuit, sized for the 15.8 A nominal load. At 0.143 m deep, 0.219 m wide, and 0.179 m tall, it fits a standard panel footprint but needs clearance around the open core for heat dissipation.
Sourcing and lifecycle reality
No official successor has been published. If your BOM calls for this exact order code, the safest route is to quote against the 4EP4010-0TS01 rather than substitute — the 3.2 mH inductance and 15.8 A rating are specific to this variant.
Integration notes
Mount inside a panel with adequate ventilation — the open-frame IP00 design relies on cabinet airflow for cooling. The 0.143 m depth fits a standard 200 mm deep enclosure, but leave at least 50 mm clearance above and below the core for natural convection. Screw terminals accept common lug sizes for 15.8 A circuit wiring. Torque to the manufacturer's specification for the terminal block (not listed here — verify on the nameplate or installation instructions).