I think we need to think about the intent of 110.3(B).
I do not believe the intent of 110.3(B) is to enforce any particular use of brand. However, if a panelboard has earned its listing with a particular brand and type of breaker, then I think that brand and type should be used.
Panelboards are probably tested with brand specific breakers, hence the warranty. To deviate from the tested brand would be wrong, but not a code violation. We have all seen multi-fit breakers and they have also earned a listing. I have to wonder if these multi-fit breakers were actually tested in every brand of panel that they will fit.
I think the intent of 110.3(B) is simple. Use listed equipment in the manner for which it was intended and follow any instructions for installation.
