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What is the difference between a “Combination Arc Fault Circuit Interrupter" (CAFI) and a “Dual Function” Device?

Issue:
Product Features and Application


Product Line:
Circuit Breakers


Environment:
UL 489, CSA 22.2 No. 5, NOM/ANCE and NEMA AB1, Federal Specification W-C-375B/GEN, NFPA 70


Cause:
The 2014 National Electrical Code adds new locations for which arc fault protection is required, and the new requirement may overlap with locations where ground fault circuit interruption is required as well.

Resolution:
Combination Arc Fault Circuit Interrupters protect branch circuits, and all downstream receptacles and cord sets, against both high-energy parallel arcing (the same as existing branch/feeder AFCIs) and low-energy series arcing. A Dual Function Device combines Combination Arc Fault Protection with Class A Ground fault (People) protection.

For more information on Square D QO™ Combination Arc Fault Circuit Interrupters, click here.

For more information on Square D HomeLine™ Combination Arc Fault Circuit Interrupters, click here.

Dual Function Devices meet 2014 National Electrical Code requirements and combine two state-of-the-art technologies; Combination Arc Fault and Ground Fault protection, in a single, easy-to-install device.

For more information on Square D QO™ Dual Function Circuit Breakers, click here.

For more information on Square D HomeLine™ Dual Function Circuit Breakers, click here.

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