The Siemens 4EP4011-0BP00 is a 3-phase filter reactor rated for 12.5 kvar at 400 V and 50 Hz. It's designed to sit between a drive or power converter and the line, attenuating harmonic currents and limiting voltage notching. The 5.67% impedance (P(%):5,67) and 210 Hz resonant frequency (FRES(HZ):210) tell you it's tuned for typical 6-pulse rectifier harmonics — the 5th and 7th — common in VFD input stages. The IP00 enclosure and free conductor ends mean this is a panel-mount component, not a standalone box. You'll land it on a mounting plate inside a switchgear or drive cabinet, with the cable lugs landed on a terminal block or busbar. The 40 °C ambient rating (TA/ISOKL:40 /B) is the standard thermal class B rise; derate if the panel ambient runs hotter.
Sourcing and lifecycle
Sourced to order through independent distribution. Submit an RFQ for current pricing and availability — the 12.5 kvar rating at 400 V is a common size, so cross-shipment from multiple warehouses is routine.
Integration notes
Free conductor ends (TYPE OF TERMINALS:FREE CONDUCTOR ENDS) — no lugs or fork terminals factory-fitted. Plan for crimp ring terminals sized to your panel's busbar or terminal block. IP00 means no drip shield; keep it above any potential water ingress point in the enclosure. The 12.5 kvar at 400 V 50 Hz rating corresponds to roughly 18 A line current at nominal voltage. The 5.67% impedance will drop about 23 V at full load — factor that into the drive's DC bus voltage budget if you're pushing the motor's rated flux.