Siemens Micromaster 4 AC Commutation Choke (6SE64xx series) is a line reactor designed for 200–480 V, 3‑phase systems to smooth current for Micromaster 4 drives. It is rated at 9 A, uses the base footprint described as FSB-2.2MH and has a net weight of about 2.1 kg. The unit provides a 2.2 mH inductance and is not intended for V20 mounting. When used with Micromaster 4 inverters, it helps reduce switching transients and improve drive performance on 200–480 VAC installations.
