The Schneider Electric VW3SKLN026H001 is a 3-phase line choke rated 26 A with 1 mH inductance, part of the Altivar accessory family. Its job is to reduce current harmonics on the input of a variable-speed drive, smoothing the current waveform and limiting harmonic distortion fed back to the supply.
The 26 A line-rated current is the continuous RMS current the choke can carry without saturating or overheating — match it to the drive's input current rating, not the motor full-load amps. A 1 mH inductance value determines the impedance at 50/60 Hz and thus the harmonic attenuation; higher inductance gives more filtering but also more voltage drop and physical size.
This is a panel-mount line choke — no DIN-rail clip, so it bolts directly to the backplate or a mounting bracket. Wire it between the mains disconnect and the drive input terminals (/L2/L3). The 26 A rating pairs naturally with Altivar drives in the 7.5–15 kW range depending on load duty; check the drive manual for the recommended line choke order code for your specific drive model.