The Siemens 4EU3931-0AB01-0A is a filter choke rated for 400 V, 260 A effective current, and 176 mH inductance at 50 Hz. It is designed per EN 61558-2-20 for choke applications, typically used on the line side of variable-frequency drives to reduce harmonic distortion and limit current spikes. The 260 A continuous rating means it can handle the full-load current of a large drive feeding a conveyor or pump motor without saturating the core.
The 176 mH inductance at 50 Hz determines impedance and voltage drop. This choke is sized for a drive on a 400 V three-phase supply.
Deployment Context
This is a panel-mount filter choke. It connects between the AC line and the drive input terminals.