Are CAFI or AFI Arc-Fault circuit breakers available for NF Panelboards?
For NF panelboards, does Schneider Electric offer arc-fault branch circuit breakers?
Applies to EDB, EGB, EJB circuit breakers used in type NF Panelboards only, sold and installed in the USA.
While NQ Panelboards have branch breakers available that provide arc-fault protection, NF Panelboards do not.
The simple answer to this question is that arc-fault circuit breakers are not available for NF panelboards. Why is that?
The requirement for Arc-Fault Circuit-Interrupter Protection is outlined in Article 210.12 of the National Electric Code (NFPA-70, 2011 Edition), and is for 120V, 15 and 20A branch circuits, in dwelling units. 120V is the phase to neutral voltage, and can be found in 120/240V 1-phase/3-wire, and 208Y/120V 3-phase/4-wire systems. At these voltages, type NQ panelboards should be used, with QO(B) arc-fault circuit breakers. QO(B) breaker are not for use in NF Panelboards.
NF panelboards, and their respective EDB/EGB/EJB circuit breakers, are designed and listed to be used at the higher voltage of 480Y/277V. While electrical codes can change, currently there is no requirement for arc-fault circuit breakers at 277V. Therefore, arc-fault breakers are not available for NF Panelboards.
In summary, if arc-fault breakers are required in a Panelboard, assuming the system has 120V phase to neutral, choose type NQ Panelboards and QO(B) arc-fault breakers.
If you have additional questions, contact us toll-free in the US at 1-888-778-2733.