Eaton cutler hammer challenger Westinghouse bryant CH SERIES 1 single pole 20 amp cafi afci combination type arc fault circuit breaker ch120af new up to code model ch120caf Eaton cutler hammer challenger UL for CH series Loadcenters of cutler hammer challenger Westinghouse bryant 1 pole 20 amp combination type arc fault circuit breaker type:CH some electrical codes require all arc faults to be combinatoin