Description
54 Watt 1-4 Light Electronic Program Start High Output 120-277V Transformer
Works With F54T5HO Fluorescent Tubes - Multi-Voltage - Extends Lamp Life - Outdoor Rated
If your T5HO fluorescent fixture has stopped working or is flickering, the ballast is usually the problem. The Keystone KTEB-454HO-UV-PS is a direct replacement electronic ballast built to run up to four T5HO lamps reliably in commercial, industrial, and outdoor applications. It is one of the most widely used T5HO ballasts in the market and fits a broad range of existing fixtures.
Program start technology preheats the lamp before striking the arc. This protects the lamp on every power cycle, which means longer lamp life and fewer replacements over time. If your space has lights that switch on and off frequently throughout the day, program start makes a measurable difference in how long your lamps last.
The ballast accepts any voltage between 120V and 277V without any manual adjustment. Whether your fixture is wired to a standard 120V circuit or a commercial 277V circuit, this ballast works without modification. It is UL and cUL Listed for outdoor use and rated to start in temperatures as low as -20 degrees F, making it suitable for parking garages, loading docks, covered walkways, and cold storage areas.
Why This Ballast
- Program start extends lamp life by reducing cathode stress on every startup
- Accepts 120V to 277V without manual voltage selection
- Supports 1, 2, 3, or 4 lamps in a single ballast
- UL and cUL Listed, Type 1 Outdoor rated
- Rated to -20 degrees F for cold environment installations
- Sound rated A - no audible hum
- 5-year warranty from Keystone Technologies
- Quick Ship - available in carton packs or distributor packs of 8
Compatible Lamp Types
- F54T5HO (54W) - most common T5HO lamp
- F54T5HO/ES (49W) - energy saving version
- FT55W/2G11
- FT50W/2G11
- FT36W/2G11
- F58T8
Specifications
- Part Number: KTEB-454HO-UV-PS
- Ballast Type: Electronic Program Start
- Input Voltage: 120-277Vac, plus or minus 10%
- Input Frequency: 50/60 Hz
- Number of Lamps: 1, 2, 3, or 4
- Lamp Connection: Series
- Power Factor: Greater than 0.90 (High)
- Output Voltage: 400V
- Sound Rating: A
- Min Starting Temp: -20 degrees F / -29 degrees C
- Max Case Temp: 194 degrees F / 90 degrees C
- Dimensions: 16.70 in. L x 1.70 in. W x 1.18 in. H
- Case Material: Steel
- Warranty: 5 Years
Certifications
- UL Listed, cUL Listed
- Class P, Type 1 Outdoor
- RoHS Compliant
- 2014 DOE Compliant
- Lamp End-of-Life Protected
Common Applications
- Office and retail T5HO troffer and strip fixtures
- Industrial high bay and low bay fluorescent luminaires
- Parking garages and exterior canopy fixtures
- Loading docks and cold storage lighting
- Any fixture wired from 120V to 277V requiring program start
Frequently Asked Questions
How do I know if this ballast will fit my fixture?
Check the lamp type label inside your fixture. If it lists F54T5HO, F54T5HO/ES, FT55W/2G11, FT50W/2G11, FT36W/2G11, or F58T8, this ballast is compatible. The case measures 16.70 inches long, so verify your fixture has adequate space before ordering.
Will this work on both 120V and 277V circuits?
Yes. The KTEB-454HO-UV-PS accepts 120V to 277Vac input without any manual switching or modification.
What is program start and why does it matter?
Program start preheats lamp cathodes before ignition on every startup cycle. This reduces lamp wear compared to rapid start or instant start methods, which is especially valuable in spaces where lights switch on and off frequently throughout the day.
Can I use this ballast outdoors?
Yes. It is UL and cUL Listed Type 1 Outdoor and rated to start at temperatures as low as -20 degrees F.
How many lamps can this ballast run?
It supports 1, 2, 3, or 4 lamps depending on how it is wired. Wiring diagrams for each configuration are included with the ballast.
What is the warranty?
Keystone Technologies provides a 5-year warranty on this ballast.
Disclaimers
*This item typically ships in 2 to 3 business days. Larger quantities may take longer than stated lead-time. All lead-times are estimates and you will be notified by email if it will take longer than 5 business days to ship.
Non-Returnable Item Notice:
Due to the sensitive electronic nature of ballasts and the risk of improper installation, tampering, or programming, this item is non-returnable. Please confirm compatibility before purchasing. If your ballast is defective upon arrival or during the warranty period, it may be eligible for a manufacturer warranty replacement. For assistance selecting the correct ballast, please contact our support team.
