Technical FAQs

Ask a Question

What is the difference between AFI and GFI circuit breakers?

Product Design Features
Product Line:
Miniature Circuit Breakers
QO/Homeline AFI/CAFI breakers
The AFI is a UL listed circuit breaker designed to mitigate the effects of arcing faults. It is required by UL to protect against arcs between current carrying conductors above 75A (Square D AFI protects from arcs above 50A), and may trip on leakage to ground with a minimum threshold of 30 to 50 mA.
The GFI is a circuit breaker UL listed for interrupting the circuit when more than 6mA of ground-fault leakage is detected.
Was this helpful?
What can we do to improve the information ?