Filter reactor for harmonic mitigation, 100 kvar at 660 V
The Siemens 4EU3632-0MK08-0AA0 is a 3-phase filter reactor rated 100 kvar at 660 V, 50 Hz, with 7% impedance. It's designed to sit between a drive or power converter and the line, attenuating harmonic currents and limiting inrush. The 7% impedance (P(%):7) is a common choice for line reactors used with variable-frequency drives, providing enough inductance to reduce harmonic distortion without excessive voltage drop under load. The 189 Hz resonant frequency (FRES(HZ):189) tells you where the impedance peak sits — useful when coordinating with other filter stages in the system.
This part carries a lifecycle stage of mature, meaning it's in the established phase of its product life — not newly introduced, not flagged for discontinuation.
Integration and connections
Termination is via flat-type terminals, which means you'll need ring or fork lugs sized for the cable ampacity. The IP00 rating requires the reactor to be installed in a clean, dry enclosure — typically a power panel or drive cabinet. EN 61558-2-20 compliance covers safety requirements for chokes and reactors, including thermal and dielectric testing.