As much as any cover does, yes, but the springs aren't really all that strong.And incidentally provide pressure on the breakers?
I agree. Technically the NEC allows up to 1/4" of recessed gap around the panel in Sheetrock. The springs make up for that gap. As we all know it's often larger than 1/4" so they help with that also.As much as any cover does, yes, but the springs aren't really all that strong.
Yes, a panel cover stops breakers from being pulled out, but it's more about not having gaps.