250 / 375 / 500 Watt Adjustable UFO High Bay | 38700 to 76800 Lumens | 4000K / 5000K | 277-480V
This adjustable UFO high bay suits warehouses and manufacturing facilities needing 38,700 to 76,800 lumens from 277-480V power. Selectable wattage and 4000K or 5000K color temperature support site-specific lighting needs, while 0-10V dimming and a 90 degree beam aid control and coverage. IP65, IK08, 10kV surge protection, and -22F to 122F operation support demanding indoor or covered industrial environments. Eye-hook or yoke mounting adds installation flexibility.
Dwayne Kula | President, CTO and Founder
61 in stock
Product Specifications
Key Features
| Brand | LED Lighting Supply |
| Watts | 250 | 375 | 500 |
| Lumens | 38700 | 58000 | 76800 |
| Lumens Per Watt | 155 |
| Replaces | 1500 or 2000 Watt Metal Halide |
| Voltage | 277V-480V |
| Color Temperature | 4000K or 5000K |
| CRI | 80+ |
| Dimming | 0-10V |
| Beam Angles (Std) | 90° |
| Optics | Polycarbonate Lens |
| Lifespan | 150,000 (L70) hours |
| Mounting | Eye-Hook or Yoke |
| Fixture Color | Black |
| Frequency (Hz) | 50/60 |
| Power Factor | .95 |
| THD | 20% |
Durable Construction
| Housing | Aluminum Alloy |
| IP Rating | IP65 |
| IK Rating | IK08 |
| Surge Protection | 10kV |
| Operating Temperature | -22°F to 122°F |
| Certifications | ETL | Rebate Eligible |
| Warranty | 5 years |
Measurements
| Dimensions (in) | 19 W X 17 H |
| Weight (lbs) | 28 |
Features/Accessories
- Color Adjustable
- Wattage Adjustable
Download IES Files
Product Lighting Layout Estimator
Use this estimator to calculate approximate fixture count, spacing, and average foot-candles for a simple rectangular space using the selected LED fixture. Enter your room dimensions, mounting height, target foot-candles, light loss factor, and room/layout condition to generate a preliminary lighting layout. When IES photometry is available, workplane height and room reflectance controls are shown.
Project Inputs
Estimated Results
Estimated average foot-candles are preliminary and should be verified with a lighting plan for project-critical applications.
Room / Layout Condition: This field is used only when usable IES photometry is not available. In fallback mode, it acts as a simplified room utilization factor for reflectance, fixture distribution, racking, obstructions, and how much fixture light reaches the work area. Open / light-colored spaces use 0.90, typical warehouses or shops use 0.75, racked or obstructed spaces use 0.60, and dark or complex spaces use 0.45. When IES photometry is active, this field is hidden and the estimator uses the selected workplane height, LLF, and simplified reflectance adjustment instead.
Photometry / Simulation Note: When usable IES photometry is available for the selected fixture, this estimator uses the fixture’s IES candela data, selected workplane height, light loss factor, and simplified reflectance adjustment to estimate fixture count, average foot-candles, and visual light distribution. The reflectance adjustment is a conservative approximation and is not a full zonal-cavity, radiosity, or professional photometric room calculation. When IES photometry is not available, the estimator uses a simulated beam model based on lumens, mounting height, room/layout condition, light loss factor, and beam angle.
Preliminary Estimate Only: This estimator is intended for simple square or rectangular spaces and should be used as a planning aid, not a final photometric lighting plan. Actual light levels may vary based on fixture optics, selected IES file, mounting conditions, workplane height, ceiling height, surface reflectance, obstructions, controls, voltage, installation conditions, and site-specific requirements. Project-critical applications should be verified with a formal lighting plan.
This estimate is a starting point. Warehouses, industrial facilities, hazardous locations, sports areas, schools, healthcare spaces, public areas, and code-sensitive projects may require a reviewed lighting layout before purchase or installation.
Product Overview
This adjustable UFO high bay provides 250W, 375W, or 500W output settings with selectable 4000K or 5000K color temperature. It produces 38,700 to 76,800 lumens and operates on 277-480V power systems.
The round UFO form factor uses a 90-degree beam angle and polycarbonate lens for high-ceiling interior lighting. Eye-hook and yoke mounting options support suspended or surface-mounted installation configurations.
Core Performance and Output
At 155 lumens per watt, this fixture provides three output levels: 38,700 lumens at 250W, 58,000 lumens at 375W, and 76,800 lumens at 500W. It is identified as a replacement option for 1500W or 2000W metal halide fixtures.
The fixture has 80+ CRI and a 90-degree standard beam angle. It supports 0-10V dimming and has a power factor of 0.95 with 20% THD.
Longevity and Reliability
The UFO high bay is rated for 150,000 hours L70 life and operates in temperatures from -22 degrees F to 122 degrees F. It includes 10kV surge protection.
An aluminum alloy housing, IP65 rating, and IK08 impact rating support use in demanding facility environments.
Build Quality and Physical Characteristics
This black aluminum alloy fixture measures 19 inches wide by 17 inches high and weighs 28 pounds. A polycarbonate lens protects the optical assembly.
Where This Product Fits Best
This high-output UFO high bay is suited to large indoor spaces that use 277-480V electrical systems and require selectable wattage and color temperature.
- warehouse lighting
- manufacturing facility lighting
- distribution center lighting
- gymnasium lighting
- aircraft hangar lighting
- indoor sports facility lighting
- convention center lighting
- commercial shop lighting
Installation and Long-Term Use
The fixture can be installed with an eye-hook or yoke mount. It operates at 50/60 Hz on 277-480V power and supports 0-10V dimming.
Safety, Certifications, and Warranty
This UFO high bay is ETL certified and rebate eligible. It includes a 5-year warranty.
Frequently Asked Questions
Q: What voltage does this UFO high bay require?
A: This UFO high bay operates on 277-480V power at 50/60 Hz.
Q: What mounting options are available for this high bay?
A: This UFO high bay supports eye-hook mounting or yoke mounting.
Q: Can the wattage and color temperature be selected?
A: This UFO high bay has selectable 250W, 375W, and 500W settings and selectable 4000K or 5000K color temperature.
Web ID: 2664