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What is the QO-DF and the HOM-DF breaker (dual function)?

Issue:
What is QO-DF, HOM-DF (Dual Function)? Is there any literature or product information available on these breakers?

Product Line:
Circuit Breakers

Resolution:
The DF suffix on certain QO and HOM breakers indicate they are "dual function" breakers, meaning they include arc fault protection (AFCI) and 5 mA ground fault people protection (GFCI) in one breaker. So DF dual function breakers combines CAFI and GFI technology into one breaker.