Philips Advance Centium Electronic fluorescent ballast is suitable to use with three/four 54-Watt F54T5/HO lamp. It has voltage rating of 120/277-Volts and current rating of 0.86/2-Amp. Programmed start ballast with 1 ballast factor, has ignition time of 1.5 secs. It features metal G housing. Ballast accommodates solid wire of size 18-AWG. It offers 0.98 power factor. This ballast features series lamp connection. It operates at the frequency rating of 50 - 60-Hz. It measures 16.7-Inch x 1.7-Inch x 1.18-Inch. Ballast withstands temperature rating of 90 deg C. Ballast is UL listed, CSA certified, RoHS compliant and meets FCC standards.