Mercmaster III 50-250 Watt Luminaires

High Pressure Sodium and Pulse Start Metal Halide.
Listed for simultaneous exposure to combustible dusts and flammable gases or vapors.

  • NEC/CEC:
    – Class I, Division 2, Groups A, B, C, D
    Class I, Zone 2, AEx nA nR IIC (Z2)
    Class I, Zone 2, Ex nR IIC (Z) - CSA *
    Class I, Zone 2, AEx nR IIC (ZB)
    Class II, Division 1 and 2, Groups E, F, G
    Class IIISimultaneous Exposure (Class I, Division 2/Class II, Division 1)
    Fixtures Outside Type (Salt Water)
    Type 4X

The Mercmaster™ III Series provides a wide selection of high quality enclosed and gasketed luminaires for use in demanding industrial environments and hazardous locations.

Mercmaster™ III 50-250 Watt Luminaires Catalog Pages

Applications Features Catalog Numbers Product Downloads Related Products
  • ​Enclosed and gasketed fixtures suitable for use in:
    • Marine and wet locations
    • A wide range of industrial, chemical processing and other areas where flammable gases and vapors or combustible dusts are present under conditions defined by the National Electrical Code as Class I, Division 2; Class II, Division 1 and Electrical Code as Class I, Division 2; Class II, Division 1 and 2; and Class III
    • For Zone 2, the method of protection is AEx nA nR – Restricted Breathing/Nonsparking or AEx nR – Restricted or AEx nR – Restricted Breathing
    • Non-hazardous locations where severe weather conditions, excessive moisture, dirt, dust, corrosive atmosphere or high ambient temperatures are encountered. 18% cooler operation allows use in ambient temperatures up to +65 °C (+149 °F) depending on fixture component combinationscomponent combinations  
  • Typical applications include:
    • ​Pulp and paper mills
    • Processing plants
    • Chemical plants
    • Oil refineries
    • Foundries
    • Manufacturing plants
    • Storage areas
    • Marine applications
  • Fixtures have NEMA 4X listing.
  • Suitability includes listing for use where there may be simultaneous exposure to combustible dusts and flammable gases and vapors. See listing pages for compliance data on specific fixture component combinations.
* CSA Certification only.


Mercmaster III HID 50-250 Watt Luminaries