The Schneider Altivar VW3SKLN530H055 is a 3-phase line choke rated at 530 A with 0.055 mH inductance, designed to reduce current harmonics on the input side of an Altivar variable-speed drive. It carries EN 50178 certification for electronic equipment used in power installations, which covers the insulation coordination and safety requirements for drive-line components.
The 530 A continuous rating matches the line-side current of a large Altivar drive. The 0.055 mH inductance limits di/dt and reduces harmonic distortion. It can handle 1.5× nominal current for 60 seconds. Thermal losses are 179 W at full rated current. That heat must be dissipated into the enclosure air — the IP00 open-frame construction means no fan or sealed housing, so panel ventilation or forced airflow is required if the choke shares a cabinet with other heat sources. Rated for 50/60 Hz line frequency, which covers standard industrial mains worldwide. The three-phase design connects line-side, ahead of the drive's rectifier stage.
This part is marked obsolete by Schneider. If you are maintaining an existing Altivar installation, verify whether the drive's harmonic performance specification still requires this exact inductance value or if a parametric substitute can be validated.