Appleton™ Mercmaster™ LED Low Profile Series Luminaires

The Appleton™ Mercmaster™ LED Low Profile Luminaires are reliable, light-weight, compact and ideal for task and area lighting applications under 20′. Field changeable globes, 6kV standard surge, and a choice of lumen outputs and Correlated Color Temperatures (CCTs) make this luminaire a great option for hazardous locations where corrosive atmospheres exist. These luminaires ensure uniform light distribution without spotlight effects or dark spots and can be tailored in the field. Also available in an Emergency Battery Backup version, it offers 90- or 180- minute modes. This is the one harsh and hazardous location luminaire you can specify to meet all your low-mount application requirements, without compromise.


  • Typical applications include pulp and paper mills, processing plants, chemical plants, petrochemical facilities, oil refineries, drilling rigs, foundries, waste and sewage treatment facilities, mining and steel mills
  • Compact, light weight, low profile design is suited for low mounting heights
  • Seven standard mounting hood designs allow for mounting in any location. Uses the same mounting hoods as the Mercmaster III HID
  • Customize to the application requirements with four different globe options: clear and diffused polycarbonate, clear glass, or prismatic glass refractor
  • Three light output levels for retrofit of HID fixtures up to 175 Watts. Emergency version provides up to 1400 lumens illumination for 90 minutes of emergency lighting with clear lens or 800 lumens illumination for 180 minutes of emergency lighting
  • Hinge has high lip for added safety during installation and servicing. Hinge and bolt construction assures 360° compression at all points on fixture housing gasket for positive sealing. Swing away design of captive bolt and nut simplifies servicing
  • Standard screw-type terminal block can accept UL/CSA 24-10 AWG wire
  • NPT threads standard
  • Emergency version features functional diagnostic test self-initiates every 14 days after initial start up. Duration test is automatically performed once per year
  • Green and Red LEDs indicate charging status and provide fault warning on Emergency version
  • quick disconnect connector easily cuts power between LEDs and battery management module to allow maintenance in hazardous locations on Emergency version
  • Universal ratings provide vast regional coverage and can be specified by end users to meet NEC, CEC, IECEx or ATEX requirements


NEC/CEC Certifications and Compliances
Class I, Division 2, Groups A, B, C, D; Class II, Division 1 and 2, Group E, F, G; Class III; Class I Zone 2 AEx ec IIC; Zone 21 AEx tb IIIC; Class I Zone 2 Ex ec IIC; Zone 20 Group IIIC; Type 3R, 4, 4X; IP66/IP67; Simultaneous Exposure; Wet Locations & Marine Outside Type; IDA Approved with Visor
ATEX Certifications and Compliances
Standard version: Zone 2 and 21-22; Ex II 2 D; Ex II 3 GD; IP66; IK08
IECEx Certifications and Compliances
Standard version: Zone 2 and 21-22; Ex ec IIC; Ex op is tb IIIC; Ex tc IIIC; IP66; IK08
Lumens to Watts
3300 lumens is equivalent to 70-100 W HID, 4400 lumens is equivalent to 100-150 W HID, 5500 lumens is equivalent to 150-175 W HID
Ambient Temperature
Standard version: -40 °C to +65 °C (-40 °F to +149 °F)
120-277 Vac, 50/60 Hz; 125-300 Vdc or 347-480 Vac, 50/60 Hz (Standard version only)
Standard Materials and Finishes
Mounting hoods, bodies and guards are cast copperfree (4/10 of 1% max.) aluminum with electrostatically applied baked gray epoxy-clad finish. Globes are polycarbonate or glass. Hardware, catch assemblies, guard are stainless steel. Refractors are heat-resistant prismatic glass
DesignLights™ Consortium
Check DLC QPL for current list of products
Glodok Exproof Product