IEC Miniature Circuit Breaker, Amps 1 A, Number of Poles 1, Curve Type D, AC Voltage Rating 277V AC, DC Voltage Rating 60V DC, Max. AIR Rating 10kA at 277V AC, Phase 1, Meets UL Type UL 489, Terminal Connection Screw Clamp, Series 5SJ4, Trip Type Thermal Magnetic, Circuit Breaker Mounting Style DIN Rail, Application Industrial, Min. Wire Size 14 AWG, Max. Wire Size 4 AWG, Length 4.76 in, Width 0.71 in, Depth 2.75 in, Frame Size 63A/5SJ4, Circuit Breaker Actuator Toggle