The fuses in the UT61E+ are a standard size, on the order of billions in use.
AsianFuse AF63C-10A in UTC61E+ is not fuse like "
on the order of billions in use."
It is afaik 264/(250) VAC 6kA Icu ceramic 10A fuse. Size 6,3 x 25mm
But much much better than in most totally cheap meters where in worst case is 5x20mm normal class fuse with very low Icu.
Example normal class tube 5x20mm, Littelfuse series 201P, 250VAC, 0.08kA Icu. Yes max interrupting capability 80A or even worse, 10A Littelfuse type 217, 250VAC and max Icu 35A !!! and kind of these two they belong to this "
on the order of billions in use.".
Of course AF63C in 61E+ is not at all in same class where is Littelfuse FLU 011. what is 11A / 1000VDC/VAC, 20kA Icu, Size 10.3 x 38.1mm
Designed specially for protection in multimeters.