SIEMENS QF220 Circuit Breaker, 20A, 2P, 10kA, 120/240VAC. More details: Plug In Circuit Breaker, Amps 20, Number of Poles 2, Circuit Breaker Type Ground Fault Circuit Interrupter (Class A - 5mA), AC Voltage Rating 120/240VAC, DC Voltage Rating Not Rated, For Use With Siemens Load Centers, Series QF, Terminal Connection Lug, Min. Wire Size 14 AWG, Max. Wire Size 10 AWG, Length 12.60 In., Width 2.00 In., Depth 3.00 In., Standards UL Listed, CSA Certified, HACR Rated, Max. AIR Rating 10kA