Circuit Breaker, Current Rating 30 Amps, Minimum Wire Size 14 AWG, Maximum Wire Size 8 AWG, With Ground Fault Circuit Interrupter QO (Plug-In) and QOB (Bolt-On) Circuit BreakersQwik-Open breakers are for use only with QO load centers, NQ and NQOD panelboards. QOB breakers are for use only with NQ or NQOD panelboards. Rated for aluminum and copper conductors.120/240VAC (1 and 2 pole: 120VAC, 3 pole: 240VAC) Visi-Trip indicator Standard and VH breakers are UL Listed as HACR type