Just checked my panel-noticed the dedicated smoke detector circuit is on a ARC breaker-I am removing it and putting in a conventional breaker & if my refrigerator is on an ARC breaker I will change that one also--these are important circuits & they should not be subject to nuisance tripping despite what the current code says. I don't know when the ARC rule became part of the NEC, but certain aspects are over kill. And yes, I am a retired electrical contractor.
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