Class I: A hazardous location in which flammable gases or vapors may be present in the air in sufficient quantities to be explosive or ignitable, such as petroleum refineries, aircraft hangars, dry cleaning plants, utility gas plants or storage areas for liquified petroleum or natural gas, and spray finishing areas.
Division 2: Abnormal condition, where ignitable concentrations of flammable gases, vapors or liquids are not like to exist under normal operating conditions, for example:Closed storage drums containing flammable liquids in an inside storage room would not normal allow the hazardous vapors to escape into the atmosphere. But if one of the containers is leaking, you've got an abnormal condition.
Group A - The only substance in group A is acetylene because it is a gas with extremely high explosion pressures.
Group B - This group includes hydrogen and other materials with similar characteristics.
Group C & D - The most usual Class 1 groups. They comprise the greatest percentage of all Class I hazardous locations. Found in Group C is ethylene. Found in Group D are many of the most common flammable substances such as butane, gasoline, natural gas and propane.

Class II: Combustible dust may be present
Division 1: Ignitable concentrations of hazards exist under normal operation conditions and/or where the hazard is caused by frequent maintenance or repair work or frequent equipment failure
E: Combustible metal dusts: aluminum, commercial alloys and magnesium
F: Combustible carbonaceous dusts: carbon black, charcoal, coal and coke dusts
G: Other combustible dusts: Chemicals, flour, grain, plastic and wood

Class II: Combustible dust may be present
Division 2: Ignitable concentrations of hazards exist under abnormal operation conditions
F: Combustible carbonaceous dusts: carbon black, charcoal, coal and coke dusts
G: Other combustible dusts: Chemicals, flour, grain, plastic and wood

Class III: Easily ignitable fibers or flyings may be present

Electric lighting fixtures for use in hazardous (classified) locations

Electric lighting fixtures for use in non-hazardous locations

Suitable for wet locations

RAB LED luminaires and LED components have been tested by an independent laboratory in accordance with IESNA LM-79 and LM-80.

Ingress protection rating of IP66 for dust and water

This product is on the Design Lights Consortium (DLC) Qualified Products List and is eligible for rebates from DLC Member Utilities. Designed to meet DLC 5.1 requirements.
DLC Product Code: S-HMSMHX

Constant Current, Class 2, 50/60 Hz, 480V, 480V: 0.27A

Driver includes dimming control wiring for 0-10V dimming systems. Requires separate 0-10V DC dimming circuit. Dims down to 10%.

15.08% at 480V

92.5% at 480V

L-N:4 kV
L/N-FG:6 kV

The minimum starting temperature is Ta = -40°C (-40°F)

-40°F (-40°C) to 122°F ( 50°C), T Code: T5

Die-cast aluminum

Clear globes

High-temperature silicone

Mercury and UV free. RoHS-compliant components.

Formulated for high durability and long-lasting color

Surface and pendant mount. Remove yoke for pendant mount.

Long-life, high-efficacy, surface-mount LEDs

RAB's range of Correlated Color Temperature follows the guidelines of the American National Standard for Specifications for the Chromaticity of Solid State Lighting (SSL) Products, ANSI C78.377-2017.

7-step MacAdam Ellipse binning to achieve consistent fixture-to-fixture color

100,000-Hour LED lifespan based on IES LM-80 results and TM-21 calculations

RAB warrants that our LED products will be free from defects in materials and workmanship for a period of five (5) years from the date of delivery to the end user, including coverage of light output, color stability, driver performance and fixture finish. RAB's warranty is subject to all terms and conditions found at rablighting.com/warranty.