Smoothing Choke for DC Bus Applications
The Siemens SIDAC 4EM5110-4BK00 is a single-phase smoothing choke rated for 220 A DC maximum, 198 A DC continuous, at 800 V DC operating voltage. That 220 A DC rating means it handles the ripple current on a DC bus feeding a large drive or inverter bank — sized for the full-load current of a 100+ kW motor drive on a 800 V DC link. Inductance is 0.02 mH (20 µH) at 8000 Hz switching frequency, with total power loss of 2 W (1 W coil, 1 W iron core). The 8000 Hz operating frequency matches modern IGBT-based drive stages; the low inductance value is typical for a DC-link smoothing choke rather than a line reactor. Thermal class F per IEC 60085 means the insulation system withstands 155 °C hot-spot temperature — adequate for enclosed panel mounting with forced airflow. IP00 protection class means it's an open-frame component; mount it inside a clean, dry enclosure away from washdown or dust.
Integration & Wiring
Termination is free cable endings — no lugs or terminal blocks. Plan for a crimp lug or bus-bar connection at installation. Dimensions are 0.145 m deep, 0.097 m wide, 0.087 m tall — fits a standard 200 mm deep enclosure with room for cabling above. Single-phase DC design; the winding cannot be paralleled for higher current. Verify the DC bus polarity and cable cross-section for 220 A continuous before terminating.