Control Transformers: Type - Industrial Control Transformer; Enclosure Construction Style - Open; Volts, Primary - 120/240V; Volts, Secondary - 24V; VA Rating - 50 VA; Frequency Rating - 50/60 Hz; Insulation Class - 130 deg C; Temperature Rise - 80 deg C; Size - 2.70" H x 3.00" W x 4.23" D; Terminal Type - Screw, Standard; Manufacturer Series - TB Series