Circuit Breaker, 20 A Amps, AC Voltage Rating 600V AC, Max. AIR Rating 35 kA at 480V AC, Circuit Breaker Type Standard, Number of Poles 3, DC Voltage Rating Not Rated, Terminal Connection Standard Terminals Load Only, Trip Type Thermal Magnetic, Phase Three, Instantaneous Trip Fixed, Phase Connection ABC, Frame Size 225A/Frame 2, Height 6 in, Width 4.11 in, Depth 3.5 in, Min. Wire Size 14 AWG, Max. Wire Size 1/0 AWG, Max. Operating Temp. 158 Degrees F, Min. Operating Temp. -4 Degrees F