Oh yeah I saw that. Fortunately the A1R's have much more reliable circuit breakers than the older trucks. I purchased spares (
Bussman) of every size in my panels plus there are unused breakers that can be repurposed.
But for other stuff like habitat circuits - if you are going to use fuses then buy your assortments from a quality source like Digikey. Even Amazon and ebay listings that say they are brand name may be counterfeit.
For the A0 and A1 trucks you just need ATO standard fuses: