Product Overview
Sylvania QHE 4x54T5HO/347-480 PSN HT SCL (51481) 4-Lamp T5HO Ballast — 347-480V, Programmed Rapid Start
The Sylvania QHE 4x54T5HO/347-480 PSN HT SCL (Item #51481) is a commercial and industrial-grade 4-lamp programmed rapid start electronic ballast engineered for high-output T5HO fluorescent lighting systems. Operating on high-voltage 347–480V circuits, this High Ambient (HT) rated ballast delivers 241.00 nominal system watts for 54W FP54T5HO lamps, making it an ideal choice for high-bay warehouse, industrial manufacturing, and Canadian commercial installations. Built with PROStart programmed rapid start technology and QUICKSENSE end-of-lamp-life safety sensing, it protects fixtures and extends lamp life across demanding operating environments down to -20°F (-29°C). Always verify line voltage, lamp quantity, and enclosure dimensions prior to ordering.
| VOLTAGE 347–480V High Voltage Input | POWER RANGE 241W Nominal 4 or 3 FP54T5HO | START TYPE PROStart Programmed Rapid | DIMENSIONS 16.73" x 1.7" 1.8" Height (2.54 lb) | PROTECTION QUICKSENSE EOL Safety Sensing |
Technical Specifications
| Brand | Sylvania / OSRAM (LEDVANCE) |
| Product / NAED Item Number | 51481 |
| Ordering Abbreviation | QHE4X54T5HO/347-480 PSN HT SCL |
| Product Series | QUICKTRONIC® High Efficiency (QHE) PROStart T5HO |
| Ballast Type | Electronic Fluorescent T5HO Ballast |
| Start Type | PROStart® Programmed Rapid Start |
| Number of Lamps Operated | 4 or 3 Lamps |
| Compatible Lamp Types | (4 or 3) FP54T5HO, FP54/47W/SS, FP54/50W/SS, FT50DL, FT55DL, FPC55 |
| Nominal System Wattage | 241.00 W |
| Input Voltage | 347.00–480.00 V AC (50/60 Hz) |
| Ballast Factor | 1.00 (Normal Ballast Factor) |
| Minimum Starting Temperature | -20°F (-29°C) |
| Max Housing Temperature (Fault) | 110°C |
| Dimmable | No |
| Safety Features | QUICKSENSE® End-of-Lamp-Life (EOL) Sensing Protection |
| Overall Dimensions (L x W x H) | 16.73 in x 1.7 in x 1.8 in |
| Product Weight | 2.54 lb |
| Ingress Protection Rating | IP20 Rated |
| Certifications & Compliance | UL Listed, CSA Certified, FCC Part 18 Non-Consumer, RoHS Compliant |
| UPC Code | 0046135514814 |
| Master Case Quantity | 10 Pieces per Case |
Product Overview
The Sylvania QHE 4x54T5HO/347-480 PSN HT SCL (Item #51481) is a high-efficiency QUICKTRONIC PROStart electronic ballast designed to drive four or three 54W T5HO linear fluorescent lamps on 347V to 480V electrical systems. Engineered specifically for high-bay industrial luminaires and high-voltage commercial distribution centers, this ballast delivers over 90% system efficiency with low harmonic distortion.
Utilizing PROStart programmed rapid start technology, the ballast heats the lamp cathodes precisely before applying ignition voltage, minimizing cathode degradation during frequent switching cycles. To protect against overheating when lamps reach end of life, the integrated QUICKSENSE sensing circuit automatically removes power from damaged lamps, ensuring fixture safety and longevity.
Rated for High Ambient (HT) thermal environments, the unit is constructed in a slim 16.73-inch enclosure weighing 2.54 lbs. With a minimum starting temperature of -20°F (-29°C), this ballast provides dependable, energy-efficient operation in cold-storage and demanding industrial facilities.
Compatible Applications
- Industrial high-bay manufacturing plants, warehouses, and logistics centers
- Commercial 347V and 480V high-voltage industrial lighting retrofits
- High ambient temperature indoor lighting installations
- Cold storage facilities and unheated commercial space luminaires
Before Ordering – Verify
- High Input Voltage (347-480V): This ballast operates strictly on 347V to 480V AC line voltage. Do NOT connect to 120V or 277V power supplies.
- Lamp Type & Quantity: Designed to run 4 or 3 lamps (54W FP54T5HO, FP54/SS energy-saving T5HO lamps, or FT50DL / FT55DL compact fluorescents).
- Start Type: Uses PROStart Programmed Rapid Start technology. Verify that fixture lampholders match programmed rapid start wiring diagrams (unshorted/non-shunted lampholders).
- Physical Dimensions: Confirm wiring channel clearance for 16.73" L x 1.7" W x 1.8" H enclosure size.
Safety and Handling Guidelines
- Disconnect main AC power at the breaker panel before inspecting, wiring, or replacing the ballast.
- Ensure proper grounding of the metal ballast enclosure in accordance with the National Electrical Code (NEC) and local electrical codes.
- Ensure non-shunted lampholders are used and wired per the PROStart wiring diagram on the ballast label.
- Do not exceed the maximum housing fault temperature rating of 110°C.
Compliance
- Safety Certifications: UL Listed and CSA Certified.
- Environmental: RoHS Compliant; lead-free manufacturing process.
- Electromagnetic Standards: Complies with FCC 47 CFR Part 18 Non-Consumer limits.
- Energy Efficiency: High Efficiency System rated over 90% efficient.
Ordering Information
- Order Product Name: QHE 4X54/347-48
- Item / NAED Number: 51481
- Ordering Abbreviation: QHE4X54T5HO347480PSNHTSCL 10/CS 1/SKU
- Brand: Sylvania / OSRAM (LEDVANCE)
- UPC Code: 0046135514814
- Packaging: Sold individually; master case contains 10 units.
For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.
