30a breaker for 40a spot on pdb

[Bruceb]

I guess I was asking MPG what rule says they are illegal. I was wondering if the breaker supplier had 30a breakers taht fit in the 40a slots and if taht was legal. We have our cims on 40a breakers even though I warned the team that pulling 160a from 4 cims would result in the main tripping which is infinately worse than temprarilu tripping a snap action breaker. It poped in the last game of the championship match in Milwaukee so we want t change them to 30s. Problem is we will have to redo the entire PDB to make this change at Atlanta if we cannot find 30's that will fit int he 40a slots. Having only about 2 hours for pit setup and robot inspecctions and needed robot changes in Atlanta this year, we were looking for an easier way to switch to 30's.
Bruce