250/375/500W Adjustable UFO High Bay, 38700-76800 lm, 4000K/5000K, 277-480V

Product Overview This adjustable UFO high bay delivers selectable outputs of 250, 375, or 500 watts, producing 38,700 to 76,800 lumens. Color temperature can be set to 4000K or 5000K. The fixture operates on 277-480V, supports 0-10V dimming, and offers a 90 Degrees beam angle through a polycarbonate lens. The housing is aluminum alloy, finished in black, and rated for IP65 and IK08 environments. Dimensions are 19 inches diameter by 17 inches height, with a weight of 28 pounds. The fixture is designed for 150,000-hour L70 lifespan and includes 10kV surge protection. Mounting options include eye-hook or yoke. Power factor is 0.95, and total harmonic distortion is 20%. Frequency compatibility is 50/60 Hz. Where This Product Fits Best Suitable for large commercial and industrial spaces requiring high-output lighting, such as warehouses, manufacturing plants, and distribution centers. Designed to replace 1500 or 2000 watt metal halide fixtures in high bay applications. Appropriate for environments exposed to dust and water jets. The fixture supports installations where voltage ranges from 277V to 480V. Adjustable wattage and color temperature allow adaptation to changing lighting requirements. Performance and Functional Considerations Lumen output ranges from 38,700 to 76,800, supporting mounting heights typical of high bay installations. The 90 Degrees beam angle provides focused illumination for task and general lighting. Color temperature selection between 4000K and 5000K enables tuning for visual comfort or inspection tasks. The fixture maintains a CRI above 80 for accurate color rendering. 0-10V dimming supports integration with lighting controls. Operating temperature range is -22 Degrees F to 122 Degrees F, suitable for unconditioned or temperature-variable spaces. Surge protection is rated at 10kV for electrical reliability. Aluminum alloy construction and polycarbonate optics resist impact and corrosion. The fixture's weight and dimensions require secure mounting. Eye-hook and yoke options accommodate different ceiling structures. IP65 and IK08 ratings confirm resistance to dust, water jets, and moderate impact.