Power Transformers: Type - Power Transformer; Primary Voltage - 115/230V AC; Secondary Voltage - 28V AC; Output Rating, Current - 2.0A; Power Rating - 56 VA; Frequency - 50/60 Hz; Number of Outputs - 1; Construction Style - Bobbin; Mounting - Chassis; Terminals - Wire Leads; Insulation Class Rating - Class B; Temperature Rise - 130 deg C; Dimensions - 2.25"Hx1.81"Wx3.68"L; Weight - 1.7 lbs; Additional Information - Hi-Pot Tested at 2500 VRMS, Terminal Size .187" x .021", Mounting Hole Size: X=3/16"