Sylvania 49970-4 3-Lamp Instant Start Ballast

Sylvania 49970-4 is a 3-lamp electronic ballast in the QUICKTRONIC family designed to drive three 32-watt T8 fluorescent lamps from a universal 120–277 V mains supply. This high‑efficiency ballast uses Instant Start ignition and provides a ballast factor of 0.88, supporting reliable, energy‑efficient operation in commercial luminaires; it is rated for operation up to 70°C and measures about 9.5 inches long by 1.68 inches wide by 1.18 inches high. Often cataloged as QHE3X32T8/UNV-ISN-SC-B, it specifically supports a 3×32W configuration with UNV input and instant‑start timing, making it suitable for multi‑lamp fixtures where consistent lumen output and energy savings are priorities.