22 A RFI filter — obsolete, sourced per RFQ
The VW3A28405 is an RFI suppression filter sized for 22 A nominal current, designed for three-phase Schneider ATV28 variable speed drives. It is now listed as obsolete by Schneider Electric. Compatibility is confirmed with the ATV28 drive models: ATV28EU72M2, ATV28EU72N4, ATV28EU54N4, ATV28HU72M2, ATV28HU54M2, ATV28HU54N4, ATV28HU72N4, ATV28HU41N4, ATV28EU41N4, and ATV28EU54M2.
Thermal and leakage — panel design constraints
The filter dissipates 12 W of thermal losses — this heat must be accounted for in the enclosure ventilation or cooling budget to keep ambient within the drive's rating. Earth leakage current is 350 mA, which affects residual-current device (RCD) selection upstream; a Type B or time-delayed RCD is typically required to avoid nuisance tripping. Maximum cable distance between the drive and motor is 50 m with this filter in the circuit — longer runs may require output reactors or derating.
Sourcing reality — obsolete, no direct replacement
Schneider Electric has marked the VW3A28405 as obsolete. Availability is through independent surplus and broker channels. For a BOM freeze or a new design, a functionally equivalent RFI filter from the current Altivar range should be evaluated, but a pin-compatible drop-in replacement from Schneider is not documented.