SQUARE D MG24546 Supp Protectr, 63A, 3P, D, 277/480VAC, 125VDC. More details: IEC Supplementary Protector, Amps 63, Number of Poles 3, Curve Type D, AC Voltage Rating 277/480VAC, DC Voltage Rating 125VDC, Max. AIR Rating 5kA, Trip Type Thermal Magnetic, Terminal Connection Lug, Mounting DIN Rail, Min. Wire Size 14 AWG, Max. Wire Size 2 AWG, Length 3.19 In., Width 2.13 In., Depth 3.00 In., Standards UL 1077, CE, CSA, IEC, Series C60N