ROBERTSON 3M10006 VT235 /A Step Down Voltage Transformer Frequency: 60Hz. 277Vac. Primary, 120Vac. Secondary, 25VA Max Load Save and order the 2M10006 Quik-Pak of 10 units individually packaged Save the most with the 5M10006 carton of 10 units, not individually packaged Primary Voltage: 277Vac., Secondary Voltage: 120Vac. Commercial grade. Two Year Factory Warranty Go to RorbertsonDirect.com for complete technical data