Square D™ Energy Efficient Transformer, Dry Type, 240/480 VAC Primary, 120/240 VAC Secondary, 50 kVA Power, 60 Hz Frequency, 1 ph, 6 Taps, Floor/Ceiling/Panel Mounting, 220 deg C Insulation, NEMA 2 Enclosure, 150 deg C, 98.3 % Efficiency, Aluminum Housing Material, 20 in W x 20 in D x 37 in H Dimensions