Listing of AFCI 'devices' has 6 categories in the UL White Book.
The 'combo' unit is not an AFCI/GFCI unit. What is technically a combo unit is: The unit will protect the branch circuit, AND the cord plugged into the receptacle outlet.
Square D has a 'combo' unit coming out in early 2004. Again combo does not mean AFCI/GFCI.
All manufacturers of AFCI breakers produce their product with class B level GFCI in the same unit as the AFCI.
In studies performed recently, the reason for AFCI breakers tripping 83% of the time is because of faulty wiring conditions tripping the GFCI portion of the AFCI breaker (grounded conductor to equipment grounding conductor connections).
Pierre
[This message has been edited by PCBelarge (edited 10-07-2003).]
