Autotransformer Input Voltage 250V AC Output Voltage 180V AC Input Power 250 W Power Output 480/277W 250 VA Rating Input Current 60 Hz Output Current 277 Ballast Factor 0.85 Power Factor 0.93 Height 1.69 in Length 9.5 in Width 1.19 in Ambient Temp Range 0 to 50 Degrees C Min Starting Temp -20 Degrees F Standards RoHS Compliant UL Listed