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50 Watt LED High Temperature Light | 6500 Lumens | 5000K | 100V-277V or 277V-480V | Rated to 176F
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150 Watt LED High Temperature Light | 19500 Lumens | 5000K | 100V-277V or 277V-480V | Rated to 176F
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300 Watt LED High Temperature Light | 39000 Lumens | 5000K | 100V-277V or 277V-480V | Rated to 176F
The HT80-300 High Temperature Fixture is a perfect combination of high quality, value, powerful LED lighting rated for temperatures up to 176F.
Out of stock
Product Description
Key Features
- Watts: 300
- Lumens: 39000
- Lumens Per Watt: 130
- Replaces: 1000 Watt Metal Halide
- Voltage: 100V-277V or 277V-480V
- Color Temperature: 5000K
- CRI: 70+
- Dimming: No or 1-10V
- Beam Angles (Std): 90°
- Beam Angles (Opt): 30° or 110° or 150°
- Optics: Polycarbonate Lens
- Lifespan: 100,000 (L70) hours
- Mounting: Eye-Hook or Trunnion
- Fixture Color: Gray
- Frequency (Hz): 50 / 60 hz
- Power Factor: .95
- THD: 20% Max
Durable Construction
- Housing: Die-Cast Aluminum
- IP Rating: IP66
- IK Rating: IK10
- Surge Protection: 12kV
- Operating Temperature: -40°F to 176°F
- Certifications: ETL
- Warranty: 5 years
Measurements
- Dimensions (in): 26.9 X 14.4 X 9.6 in
- Weight (lbs): 42.55 lbs
Product SKU Variations
- SKU: MLLG-LED-HT80-300-50-90
- Voltage: 100V-277V
- SKU: MLLG-LED-HT80-300-50-90-HV
- Voltage: 277V-480V
Product Overview
This 300 Watt LED High Temperature Light is engineered for continuous operation in environments where ambient temperatures reach up to 176°F (80°C). Designed for industrial facilities with elevated heat loads, it provides reliable illumination in areas where standard LED fixtures fail due to thermal stress. Typical installations include steel mills, foundries, power plants, and furnace-adjacent zones where high-output lighting is required and heat exposure is constant.
The fixture delivers 39,000 lumens at 5000K, supporting mounting heights and coverage patterns similar to legacy 1000W metal halide units. It is suitable for both new construction and retrofit scenarios where high temperature resistance is a primary requirement.
Core Performance and Output
This fixture outputs 39,000 lumens at 130 lumens per watt, providing high efficiency in demanding thermal environments. The 5000K color temperature supports visual clarity in industrial process areas. Standard beam angle is 90°, with optional 30°, 110°, and 150° optics for tailored distribution. The fixture is available with either 100-277V or 277-480V drivers, supporting a wide range of electrical systems.
At lower mounting heights, output may be excessive for confined spaces and can increase glare. At extreme mounting heights above 40 feet, uniformity may decrease depending on beam selection and spacing. The fixture is not dimmable unless specified with the 1-10V dimming option.
Adjustability and Control Options
Beam angle can be specified at order to match coverage requirements, with field-interchangeable optics for 30°, 90°, 110°, or 150° distributions. Mounting options include eye-hook and trunnion, supporting both pendant and surface installations. The fixture is available in non-dimming and 1-10V dimming configurations, depending on model selection.
No onboard controls are included. External control integration is limited to 1-10V dimming models. No motion or daylight sensors are integrated due to high temperature constraints.
Longevity and Reliability
This fixture is rated for 100,000 hours (L70) at maximum ambient temperature. The die-cast aluminum housing and polycarbonate lens are designed for continuous exposure to high heat, dust, and airborne contaminants. 12kV surge protection is standard, supporting electrical reliability in industrial power environments.
Thermal management is passive, with no moving parts or fans. The fixture maintains output and lifespan in ambient temperatures from -40°F to 176°F. No additional cooling or derating is required within this range.
Build Quality and Physical Characteristics
The fixture measures 26.9 x 14.4 x 9.6 inches and weighs 42.55 lbs. The housing is die-cast aluminum with a gray finish, supporting both mechanical durability and thermal dissipation. The lens is polycarbonate for impact resistance and optical clarity.
Ingress protection is IP66, supporting use in dusty and wet environments. IK10 impact rating supports installation in areas with mechanical hazards. All hardware is corrosion-resistant for long-term use in industrial settings.
Where This Product Fits Best
This fixture is designed for continuous operation in high temperature industrial environments where standard LED or HID fixtures are not suitable. It is commonly installed in process areas, furnace zones, and energy sites where ambient heat is persistent and reliability is critical.
- high temperature facility lighting
- power plant and energy site lighting
- steel mill lighting
- industrial furnace area lighting
- foundry lighting
- nuclear facility lighting
- kiln lighting
- glass manufacturing lighting
Environmental characteristics include high ambient heat, airborne particulates, and exposure to mechanical impact. The fixture is suitable for both indoor and sheltered outdoor locations where IP66 and IK10 ratings are required.
Installation and Long-Term Use
Mounting options include eye-hook for pendant installations and trunnion for surface or wall mounting. The fixture?s weight and size require secure attachment to structural supports rated for at least 43 lbs. All wiring and connections must be rated for high temperature environments.
Routine maintenance is minimal due to the sealed housing and passive cooling design. Lens cleaning and visual inspection are recommended in dusty or particulate-heavy areas. No relamping or internal servicing is required during the rated lifespan.
How This Fixture Is Commonly Used
Typical mounting heights range from 25 to 40 feet, depending on the application and required light levels. Spacing is determined by beam angle selection and target uniformity, with wider optics supporting broader coverage at lower mounting heights. In furnace areas and steel mills, fixtures are often spaced to minimize shadowing and support process visibility.
Higher output allows for reduced fixture count in large open areas, but may require glare mitigation in confined or task-specific zones. Layouts should account for heat sources and airflow patterns to avoid localized thermal buildup.
Safety, Certifications, and Warranty
This fixture is ETL listed. It carries an IP66 ingress protection rating and an IK10 impact rating. Surge protection is rated to 12kV. The operating temperature range is -40°F to 176°F. A 5-year warranty is standard.
All certifications and ratings are valid for the stated operating conditions. No additional safety measures are required beyond standard electrical and mounting practices for high temperature environments.
Frequently Asked Questions
Q: What is the maximum ambient temperature this fixture can operate in?
A: The fixture is rated for continuous operation in environments up to 176°F (80°C).
Q: What mounting options are available?
A: Eye-hook and trunnion mounting options are available for pendant or surface installation.
Q: Is this fixture dimmable?
A: Dimming is available on models specified with 1-10V dimming. Non-dimming models are also available.
Q: What is the recommended mounting height for this fixture?
A: Typical mounting heights range from 25 to 40 feet, depending on application and beam angle selection.
Q: How does the fixture handle dust and water exposure?
A: The fixture is IP66 rated for protection against dust and powerful water jets.
Q: How should fixture spacing be planned in high temperature areas?
A: Spacing depends on beam angle, mounting height, and required light levels. Wider optics allow for greater spacing but may reduce uniformity at higher mounting heights.
Application Questions and Clarification
Q: Is this fixture suitable for use in steel mills and foundries?
A: Yes, it is designed for continuous operation in steel mills, foundries, and other high temperature industrial environments.
Q: Can this fixture be used in kiln or glass manufacturing areas?
A: Yes, the fixture is suitable for kiln lighting and glass manufacturing lighting where ambient temperatures are elevated.
Q: Is this fixture appropriate for power plant and energy site lighting?
A: Yes, it is commonly installed in power plants and energy sites with high ambient heat and demanding operating conditions.
Q: Does this fixture support use in nuclear facility lighting?
A: Yes, it is suitable for nuclear facility lighting where high temperature resistance and reliability are required.










