Schneider Electric I-Line™ PowerPact™ Molded Case Circuit Breaker, 480Y/277 VAC, 20 A, 50/60 Hz Frequency, 25 kA at 240 VAC/18 kA at 480 VAC/14 kA at 600Y/347 VAC Interrupt, B Frame, Thermal/Magnetic Trip, 400 to 600 A Trip, 1 Pole, Toggle Actuator, Line/Load Lug Connection, 14 to 2/0 AWG Al/Cu Wire, NEMA AB4/IP40 Enclosure, DIN Rail/Threaded Mounting, -13 to 158 deg F, 1.06 in W x 4.01 in D x 5.39 in H Dimensions, Gray