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CFL Ballasts

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Compact fluorescent lamp (CFL) ballasts power the pin-based CFL lamps used in commercial downlights, troffer fixtures, and wall sconces. Unlike screw-base consumer CFL bulbs that contain an integrated ballast, commercial pin-based CFLs (2-pin and 4-pin configurations including G23, GX23, GX24, and related bases) require a separate external ballast in the fixture. This design allows the lamp to be replaced independently when it reaches end of life, lowering long-term maintenance costs compared to integrated-ballast units.

CFL ballasts are available as standard instant-start and rapid-start electronic designs. Many fixtures accommodate 2-lamp or 4-lamp ballast configurations to increase light output from a single housing. Ballast wattage must match the specific CFL lamp type and wattage installed; using a mismatched ballast causes reduced light output, shortened lamp life, or failure to start. Electronic CFL ballasts operate at high frequency, eliminating the flicker common in older magnetic designs.

RelightDepot carries CFL ballasts from reputable commercial manufacturers for the most common pin-based CFL configurations. For the matching lamps, browse our Compact Fluorescent Lamps section, which covers quad-tube, triple-tube, duo-tube, and spiral CFL styles. For full fluorescent ballast coverage including T8 and T5 types, visit Fluorescent Ballasts. Facilities transitioning from CFL to LED can find replacement power supplies in our LED Drivers section. The complete Ballasts and Drivers catalog covers all ballast and driver categories.