Nope, but it should be good to 30A continuous, I THINK. (You should test it)
Amass seems to name their connectors according to their continuous rating, and then puts out nonsense “CYA” datasheets.
This is true, but XT90 is also “rated for” 30A and I think these are CYA ratings. In open air the XT90 desolder themselves at around 300A . MR60 are likely to also be underrated.
CYA = Cover Your Ass, aka “don’t sue me, I told you not to do it”