ComboDrive T8 LED tubes offer maximum flexibility in both technology and application. Choose between single or double ended wiring constructions. You also have the option of using them as a UL Type A LED tube with an instant start ballast, or in a ballast bypass application as a UL Type B tube. Our ComboDrive tubes are fully safety certified for both methods.
For the plug and play application the tube can be installed without any changes to the fluorescent ballast wiring. Installation is as simple as switching out the fluorescent tubes with T8 LED tubes. When using this option, should the instant start ballast fail, simply take it out and connect the T8 LED tube directly to the line voltage. This allows you to keep using the same lamp instead of replacing it.
For the ballast bypass option, just connect the tube directly to the 120-277V line voltage following the wiring diagrams. They’re compatible with most instant start electronic T8 ballasts. Keystone offers replacement lamp holders if needed.
- Saves time with plug and play design; no rewiring needed
- Saves energy compared to their fluorescent counterparts
- Reduces maintenance and replacement costs with longer lifespan
- Provides convenience with flexible installation options
- Reduces stocking needs for distributors
- Offers Type B functionality if ballast fails in Type A application
- Environmentally friendly: No mercury used
- UL Listed & UL Classified
- Instant Startup
- Frosted lens eliminated pixelation
- Operating Temperature: -20°C/-4°F to 45°C/113°F
- 100+ lm/W (bare lamp efficacy)
- Suitable for dry and damp locations
- SHATTERPROOF GLASS CONSTRUCTION
System Wattage Initial Lumens Catalog Number Color Length Wattage Lumens .78 BF .88 BF 1.18 BF .78 BF .88 BF 1.18 BF Input Voltage Lamp Wattage Initial
Spec Sheet KT-LED9T8-24GC-830-X 3000K 2’ 9W 1100 11.2W 11.5W 12.1W 1070 1070 1070 120-277V 9W 1070 Download KT-LED9T8-24GC-835-X 3500K 2’ 9W 1100 11.2W 11.5W 12.1W 1110 1110 1110 120-277V 9W 1110 Download KT-LED9T8-24GC-840-X 4000K 2’ 9W 1150 11.2W 11.5W 12.1W 1170 1170 1170 120-277V 9W 1170 Download KT-LED9T8-24GC-850-X 5000K 2’ 9W 1150 11.2W 11.5W 12.1W 1190 1190 1190 120-277V 9W 1190 Download KT-LED15T8-48GC-830-X 3000K 4’ 15W 1800 16.2W 17.4W 18.5W 1620 1750 1880 120-277V 15W 1710 Download KT-LED15T8-48GC-835-X 3500K 4’ 15W 1800 16.2W 17.4W 18.5W 1670 1780 1920 120-277V 15W 1750 Download KT-LED15T8-48GC-840-X 4000K 4’ 15W 1800 16.2W 17.4W 18.5W 1710 1840 1980 120-277V 15W 1800 Download KT-LED15T8-48GC-850-X 5000K 4’ 15W 1800 16.2W 17.4W 18.5W 1730 1860 2010 120-277V 15W 1830 Download
- COMBODRIVE 2
System Wattage Line Voltage Application Catalog Number Color Length Wattage Lumens .78 BF .88 BF 1.18 BF Input Voltage Lamp Wattage Spec Sheet KT-LED14T8-48G-835-X2 3000K 48″ 14W 1625 16.5W 17W 18.5W 120-277V 14W Download KT-LED14T8-48G-840-X2 4000K 48″ 14W 1650 16.5W 17W 18.5W 120-277V 14W Download KT-LED14T8-48G-850-X2 5000K 48″ 14W 1700 16.5W 17W 18.5W 120-277V 14W Download
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Keystone offers complementary lighting layout services for our products, to help take the next step in bringing your project to life. We can provide answers to your lighting questions to determine how many fixtures you need, what types of lamps are best for your applications, and how to save the maximum amount of energy, all within budget.
By utilizing industry leading lighting layout design software, we provide accurate and dependable application renderings. For new constructions or retrofit, simply provide Keystone with a few key project details, and our lighting designers will get to work on your request.Request a Lighting Layout