You have successfully added from to your part list.
Mersen PT fuses are current-limiting fuses with high interrupting rating, used for the primary winding protection of potential transformer. They are small dimension ferrule type fuses and mount in standard clips. Current ratings are from 0.25A to 5A
Ferrule mounting for standard clips and interchangeability with other brands of fuses
Current-limiting for superior equipment protection
Non-venting for silent operation
Metal embossed catalog number and manufacturing date for lasting identification
Blown-fuse indicator to give positive identification of open fuse fuse is available on the 9F60 series
Primary protection for potential transformers (PT) or control power transformers (CPT)