Circuit Breaker, Bolt On, AIR Rating 10kA, Air Rating @ 48VDC 5kA, Ground Fault Interrupter Circuit Breaker Type, Number of Poles 2, Voltage 120/240VAC, 50 Amps, Min Wire Size 12 AWG, Max Wire Size 4 AWG, Length 3.12 In, Width 1.5 In, Depth 2.91 In, Box Lug Terminal Connection, For Use With NQOD Panelboards, Max DC Voltage 48 V, Standards UL/CSA 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