Control Transformer, Input Voltage – Transformer 277V AC, Output Voltage – Transformer 120V AC, VA Rating – Transformer 500 VA, Protective Device None, Enclosure Style – Transformer Open, Mounting – Transformer Foot, Phase – Electrical 1, Hz – Electrical 50 Hz, 60 Hz, Temp. Rise 115 Degrees C, Enclosure Finish Epoxy Resin Varnish