Miniature Circuit Breaker Amps 20 A AC Voltage Rating 277/480V AC Circuit Breaker Type Standard Number of Poles 3 DC Voltage Rating 125V DC Circuit Breaker Actuator Toggle Circuit Breaker Mounting Style Bolt On Compatible Panelboard/Load Center Series NF Phase Three Series EDB Max AIR Rating 18kA at 277/480V AC For Use With Square D NF Panelboards Terminal Connection Lug Frame Size 125A/EDB Length 5.66 in Width 2.94 in Depth 4.05 in Max Operating Temp 104 Degrees F