The higher the capacity, the higher the short-circuit current that will be broken.
Some circuit breakers have a very low breaking capacity, and if a short-circuit current occurs that exceeds its allowance it will burn out the breaker.
So it's okay to mark the rated current on the distribution box
There is no standard requirement to mark the breaking capacity on the distribution. And if you do, it will mislead the user. You can indicate the manufacturer's parameters and current-breaking capacity in the equipment manual