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Am I missing something here, or is Murray not as good as I once thought?

I guess it depends on how good you thought Murray once was. I never thought it was any good. It is now part of Seimens, which is German for crap. We had a 20 amp Seimens breaker with a dead short on it, it would buzz for several seconds until the Cutler Hammer(CH line) 200 amp main would trip.