Sylvania T5 Fluorescent Ballast - 347-480V AC | Programmed Start

QHE4x54T5HO/347-480 PSN HT (51481) is the Sylvania T5 Fluorescent Ballast. This model belongs in a fluorescent lighting system with the lamp configuration stated for this ballast. The listed lamp configuration is 4 X F54T5HO, which should be checked as a complete lamp-and-count combination. This is the programmed start version, so the fixture wiring and lampholder arrangement must suit that starting method. Ballast factor 1 is one comparison point for retaining the intended lamp output in this fixture.

Plan the electrical connection around this model’s 347-480V AC rating. This version lists length 16.73 in., width 1.68 in., height 1.18 in. Those measurements help check physical fit at the ballast compartment. Follow the wiring diagram for this model when making the replacement connections.

Buying tip: Match the lamp designation, number of lamps and supply voltage to the existing ballast.