250 / 375 / 500 Watt Adjustable UFO High Bay | 38700 to 76800 Lumens | 4000K / 5000K | 277-480V

Product Overview

This is an adjustable wattage UFO high bay fixture designed for industrial and commercial spaces requiring high-output lighting. The fixture supports three selectable wattage settings: 250, 375, and 500 watts, delivering lumen outputs from 38,700 up to 76,800. It is suitable for replacing 1500 to 2000 watt metal halide systems.

The fixture operates on 277-480V input and offers selectable color temperatures of 4000K or 5000K. It features a 90-degree beam angle with a polycarbonate lens and is constructed with an aluminum alloy housing finished in black.

Key electrical characteristics include a power factor of 0.95 and total harmonic distortion of 20%. The fixture supports 0-10V dimming for output control and is rated for 150,000 hours (L70) of operation.

Physical dimensions are 19 inches in diameter and 17 inches in height, with a total weight of 28 pounds. Mounting options include eye-hook or yoke.

Where This Product Fits Best

This UFO high bay is intended for use in large-scale industrial and commercial environments where high lumen output and robust construction are required. Typical applications include warehouses, manufacturing plants, distribution centers, and similar facilities with high ceilings.

The fixture is suitable for locations where legacy 1500W or 2000W metal halide systems are being replaced and where 277-480V power is available. The adjustable wattage and color temperature allow for adaptation to different lighting requirements within the same facility.

Its IP65 and IK08 ratings make it appropriate for areas exposed to dust, moisture, and moderate physical impact. The fixture is designed to operate reliably in ambient temperatures from -22°F to 122°F.

Performance and Functional Considerations

The selectable wattage feature allows adjustment of light output to match the needs of the space or to standardize lighting levels across different zones. Lumen efficacy is 155 lumens per watt, supporting energy-efficient operation.

The fixture supports 0-10V dimming, enabling integration with compatible lighting controls for further energy management or task tuning. The 90-degree beam angle provides focused illumination suitable for high bay applications.

Color temperature can be set to either 4000K or 5000K, allowing adaptation to user preference or task requirements. The polycarbonate lens is impact-resistant and suitable for industrial environments.

Surge protection is rated at 10kV, providing resilience against electrical disturbances common in industrial settings.

Installation and Long-Term Use

The fixture can be mounted using either an eye-hook or yoke, supporting installation flexibility based on ceiling structure or retrofit needs. The 28-pound weight and 19-inch diameter should be considered when planning mounting points and support hardware.

With an IP65 rating, the fixture is protected against dust ingress and water jets, making it suitable for washdown areas or locations with airborne particulates. The IK08 rating means the fixture can withstand moderate impact without damage to the housing or lens.

The aluminum alloy housing provides durability and thermal management for long-term reliability. The fixture is rated for 150,000 hours (L70), supporting extended maintenance intervals in demanding environments.

Operating temperature range from -22°F to 122°F allows use in both refrigerated and high-heat industrial spaces.

How This Fixture Is Commonly Used

After installation, the adjustable wattage and color temperature settings allow you to standardize lighting levels or adapt to changing operational needs without replacing the fixture. This is useful for facilities with evolving layouts or varying task requirements.

The 0-10V dimming capability lets you integrate the fixture into existing lighting control systems for scheduled dimming or occupancy-based adjustments. The fixture maintains consistent output and color quality across its adjustment range.

Routine cleaning and inspection are straightforward due to the fixture's sealed design and impact-resistant lens. The robust housing and environmental ratings reduce the need for frequent maintenance in dusty or damp locations.

Mounting method can be selected based on ceiling structure or retrofit constraints, and the fixture's weight and dimensions should be considered when planning installation logistics.

Safety, Certifications, and Warranty

This fixture is ETL listed.

The product is IP65 rated for dust and water resistance and IK08 rated for impact resistance.

Surge protection is rated at 10kV.

LED Lighting Supply provides a 5-year warranty on this fixture.

Frequently Asked Questions

What voltage does this fixture support?
This fixture operates on 277-480V.

What are the available wattage and lumen output settings?
Selectable wattages are 250, 375, and 500 watts, with corresponding lumen outputs of 38,700, 58,000, and 76,800.

What mounting options are available?
Mounting can be done with either an eye-hook or yoke.

What certifications does this fixture carry?
This fixture is ETL listed.

What is the warranty period?
LED Lighting Supply provides a 5-year warranty.

Application Questions and Clarification

This product description reflects the provided specifications, ratings, and configuration options. For questions related to site-specific conditions, electrical compatibility, control integration, or application requirements not addressed in the provided data, our team is available to provide clarification.