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400 Watt Round Explosion Proof LED Light | 56000 Lumens | Class 1 Div 2 | Class 2 Div 2 | 5000K | 100V-277V or 277V-480V
Product Description
UL Specs
- UL 844 Hazardous Locations
- Class I, Division 2, Groups A, B, C, D
- Class II, Division 1, Groups E, F, G
- Class II, Division 2, Groups F, G
- Class III
- UL 1598 Suitable for Wet Locations
- UL 1598A Marine Outside Type
- ABS
ATEX Marking
- II 3 G Ex ec IIC T6...T3 Gc
- II 2 D Ex tb IIIC T85°C...T103°C Db
IECEx Marking
- Ex ec IIC T6...T3 Gc
- Ex tb IIIC T85°C...T100°C Db
Key Features
- Watts: 400
- Lumens: 56000
- Lumens Per Watt: 140
- Replaces: 1000 Watt Metal Halide
- Voltage: 100V-277V or 277V-480V
- Color Temperature: 5000K
- CRI: 70+
- Dimming: 1-10V
- Beam Angles (Std): 120°
- Beam Angles (Opt): 40° or 60° or 90°
- Optics: Tempered Glass Lens
- Lifespan: 50,000 (L70) hours
- Mounting: Yoke or 3/4 in NPT Pendant
- Fixture Color: Gray
- Frequency: 50-60Hz
- Power Factor: >.95
- THD: < 10%
Durable Construction
- Housing: Copper Free Aluminum
- IP Rating: IP66
- Surge Protection: 10kV
- Operating Temperature: -40°F to 140°F
- Certifications: ETL | Rebate Eligible
- Warranty: 5 years
Measurements
- Dimensions: 18.9 X 15.5 in
- Weight: 37.5 lbs
Product SKU Variations
- SKU: MLLG-E-LED-EXPLB-400-50-C1D2
- Voltage: 100V-277V
- SKU: MLLG-E-LED-EXPLB-400-50-HV-C1D2
- Voltage: 277V-480V
Product Overview
This 400 watt round explosion proof LED fixture delivers 56,000 lumens at 140 lumens per watt with a 5000K color temperature and CRI of 70+. It replaces 1000 watt metal halide fixtures and is available in two voltage configurations: 100V-277V or 277V-480V, both operating at 50-60Hz.
The fixture measures 18.9 x 15.5 inches and weighs 37.5 lbs. Housing is copper free aluminum with a gray finish and a tempered glass lens. Standard beam angle is 120 degrees, with optional 40, 60, or 90 degree optics available. Mounting options include yoke mount or 3/4 inch NPT pendant.
Rated lifespan is 50,000 hours at L70. The fixture includes 1-10V dimming capability and 10kV surge protection. Power factor is greater than .95 with THD under 10%.
Where This Product Fits Best
This fixture is classified for Class I, Division 2, Groups A, B, C, D and Class II, Division 1, Groups E, F, G as well as Class II, Division 2, Groups F, G and Class III environments per UL 844. These ratings allow installation in areas where flammable gases, vapors, or combustible dusts may be present under defined conditions.
The UL 1598 Wet Location rating and UL 1598A Marine Outside Type classification support use in outdoor industrial environments and marine applications. ABS certification is also carried. IP66 rating allows exposure to high-pressure water jets and complete dust ingress protection. Operating temperature range is -40 degrees F to 140 degrees F.
ATEX marking covers II 3 G Ex ec IIC T6...T3 Gc and II 2 D Ex tb IIIC T85 degrees C...T103 degrees C Db. IECEx marking covers Ex ec IIC T6...T3 Gc and Ex tb IIIC T85 degrees C...T100 degrees C Db.
Performance and Functional Considerations
At 56,000 lumens from 400 watts, this fixture provides a direct replacement path for 1000 watt metal halide systems. The 5000K color temperature produces a neutral white light suitable for industrial task visibility. CRI of 70+ supports general identification and inspection tasks.
The standard 120 degree beam angle provides broad coverage. Optional 40, 60, or 90 degree optics allow narrower distribution where concentrated light is needed at greater distances. The tempered glass lens protects the LED array in demanding environments.
Dual voltage availability covers both standard commercial power at 100V-277V and higher voltage industrial systems at 277V-480V. Power factor above .95 and THD below 10% indicate stable electrical performance with minimal harmonic distortion on the supply circuit.
Installation and Long-Term Use
Two mounting methods are available: yoke mount for ceiling or wall installation, or 3/4 inch NPT pendant for suspended applications. At 37.5 lbs, structural support and rigging must accommodate the fixture weight plus any mounting hardware.
The copper free aluminum housing resists corrosion in marine and chemical environments where standard aluminum may degrade. IP66 ingress protection allows direct washdown and sustained outdoor exposure without compromising internal components.
The 10kV surge protection rating provides resilience against electrical transients common in industrial power systems. The -40 degrees F to 140 degrees F operating range supports year-round operation in both cold storage environments and high-ambient industrial spaces. Rated lifespan of 50,000 hours at L70 defines expected output retention over extended service.
How This Fixture Is Commonly Used
Once installed, the 1-10V dimming input allows output adjustment through compatible controls when reduced light levels are acceptable during certain operations or shifts. This provides flexibility in spaces where full output is not always required.
The beam angle selection made during specification determines how light is distributed across the work area. Facilities requiring broad coverage typically use the standard 120 degree optic. Spaces with higher mounting heights or narrower target areas benefit from the optional 40, 60, or 90 degree configurations.
The tempered glass lens and IP66 sealed housing allow routine cleaning with pressure washers without special precautions. In marine or coastal installations, the copper free aluminum construction and wet location rating support long-term durability against salt exposure and humidity.
Safety, Certifications, and Warranty
This fixture is ETL listed and carries UL 844 hazardous location certification. UL 1598 Wet Location and UL 1598A Marine Outside Type ratings are included. ABS certification is also held.
ATEX and IECEx markings are provided for applicable international installations. The fixture is rebate eligible through qualifying utility programs.
We provide a 5 year warranty on this fixture.
Frequently Asked Questions
What voltage options are available?
Two configurations are offered: 100V-277V and 277V-480V. Both operate at 50-60Hz.
What hazardous location classifications does this fixture carry?
The fixture is rated for Class I, Division 2, Groups A, B, C, D; Class II, Division 1, Groups E, F, G; Class II, Division 2, Groups F, G; and Class III per UL 844.
What metal halide fixture does this replace?
This LED fixture replaces 1000 watt metal halide systems.
Is this fixture suitable for wet or marine environments?
Yes. The fixture carries UL 1598 Wet Location and UL 1598A Marine Outside Type ratings, along with IP66 ingress protection.
What mounting options are available?
Yoke mount and 3/4 inch NPT pendant mount are both available.
Is this fixture eligible for utility rebates?
Yes. The fixture is rebate eligible.
What is the warranty period?
We provide 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.



