What it is and what's in the box
HMIYPMKTPSP1 is a Schneider Electric Harmony iPC maintenance kit, specifically the field-service refresh kit for the HMIPSP panel PC series. The kit composition covers everything needed for a standard preventative-maintenance swap: mounting bracket, screws, power cord, CFast card, sticker sheet, and damper rubber.
What the kit does on a live panel
The CFast card carries the panel's runtime image — swapping it during a maintenance window replaces the OS and application stack without a field reload. The damper rubber and bracket address vibration isolation and secure mounting after thermal cycling in an enclosure.