Philips Advance T12 Fluorescent Ballast - 120V AC | Rapid Start

RELB-2S40-N-35M (108803) is the Philips Advance T12 Fluorescent Ballast. This model belongs in a fluorescent lighting system with the lamp configuration stated for this ballast. The 2 X F40T12 operating configuration distinguishes this ballast from versions intended for a different lamp count. Its specified starting method is rapid start; compare it with the existing circuit rather than relying on the housing dimensions alone. When comparing replacements, note the 0.85 ballast factor as well as the lamp and supply ratings.

Plan the electrical connection around this model’s 120V AC rating. The listed body dimensions are length 9.50 in., width 1.30 in., height 1.00 in.; use them when checking the available space around 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.