Square D™ Buck and Boost Transformer, Dry Type, 120/240 VAC Primary, 12/24 VAC Secondary, 0.5 kVA Power, 60 Hz Frequency, 1 ph, Wall Mounting, 130 deg C Insulation, NEMA 3R/IP54 Enclosure, 80 deg C, Steel Housing Material, 6.19 in W x 4.69 in D x 6.19 in H Dimensions