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Video: What is the difference between a GFI breaker, a CAFI breaker, and a DF breaker?

Issue:
What is the difference in the breakers with yellow, white, and purple test buttons?

Product Line:
Circuit Breakers

Resolution:
All QO, QOB, and HOM circuit breakers provide standard overload and short circuit protection, which helps to protect circuit wiring from heat damage caused by too much electricity flowing in the wire (UL489). Breakers with suffix GFI, CAFI, and DF include this protection, plus have additional protection as explained below.

GFI breakers include 5 mA ground fault protection, which helps to protect people from being seriously injured if electricity should flow through their body to ground (UL943 Class A GFCI). They have a yellow test button.

CAFI breakers include the combination of both parallel and series arc fault protection, which helps to protect against fire hazards caused by arcing in damaged electrical wiring (UL1699 Combination AFCI). They have a white test button.
NOTE: Older arc fault breakers were designated AFI and had blue or green buttons, and offered parallel arc fault protection only.

DF breakers include the dual protection of both of the above, GFI and CAFI, in one device. They have a purple test button.

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Range:
Combination Arc-fault Circuit InterruptersHomeLineĀ® Circuit BreakersQO Dual Function Circuit BreakersHomeline Dual Function CAFI Circuit BreakersHomeline Combination Arc Fault Circuit Interrupters
Explore more
Range:
Combination Arc-fault Circuit InterruptersHomeLineĀ® Circuit BreakersQO Dual Function Circuit BreakersHomeline Dual Function CAFI Circuit BreakersHomeline Combination Arc Fault Circuit Interrupters
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