Philips Centium Electronic fluorescent ballast has a voltage rating of 120 - 277 Volts. It measures 9.500 Inch x 1.300 Inch. Ballast is compatible with one/two T5 fluorescent lamps of power rating 54 Watts. Ballast has an ignition time of 1.5 seconds and maximum THD of 10%. The case has a maximum temperature rating of 90 deg C. Ballast offers great flexibility and is ideal for commercial grade applications.Ballast is suitable for outdoor applications. It features series lamp wiring and is compatible with wires of size 18 AWG. It is provided with N housing made of metal for durability. A-rated ballast operates at 0.98 power factor. It has a ballast factor of 1 and ballast efficacy factor of 0.84. It has a line frequency rating of 50/60 Hz. Ballast is UL listed and CSA certified. Also known as -F54T5 Elec Ballast-PHILIPS ADVANCE ICN2S5490CN35I Electronic Ballast,T5 Lamps,120/277V-Philips ICN2S5490CN35I Centium Electronic Fluorescent Ballast 120 - 277 Volt 11