Open Frame PJT-40W & MDS-040APS Series Product Upgrade Notice


In order to upgrade to the latest IEC 62368-1:2018 (Ed 3.0) standards, Delta will remove the varistor component (position “Z1”) from the PJT-40W and MDS-040APS series. Comprehensive testing and verification of the results have been conducted to ensure that all customers can expect consistent, high-quality product performance after these design changes.


For more details, please refer to the latest specifications on the DeltaPSU website.


Before After
PJT-40W series



MDS-040APS series



Model List:

Models Old Label Revision New Label Revision Implementation Date
MDS-040APS12 BA 04.1 05 Nov-2023
MDS-040APS15 BA 03.1 04 Nov-2023
MDS-040APS18 BA 03.1 04 Nov-2023
MDS-040APS24 BA 03.1 04 Nov-2023
PJT-12V40WBAx 01 02 Jan-2024
PJT-15V40WBAx 01 02 Jan-2024
PJT-18V40WBAx 01 02 Jan-2024
PJT-24V40WBAx 01 02 Jan-2024

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