Hazardous Area

ATEX Zone 1


IP66 Rated Explosion Proof Linear LED Light Fitting


Linear Batten Zone 1 Lighting
CeEx GrIecex GrZone 1 21 Gr140lm5yearsIk10 Ik08Ip66Temp 55cEmergencyLed Gr
  • Technical BrochureStephenson 5 Data Sheet
  • Photometric FilesStephenson 5 Photometrics
  • Packaging & DeliveryStephenson 5 Weights and Packaging

As part of our series of ATEX rated, hazardous area light fittings, the Stephenson Series is a premium linear explosion-proof LED luminaire well suited for use in the petrochemical industry including off-shore oil rigs and similar areas.

A copper-free aluminium enclosure, with IK08 and IP66 ratings, provides sufficient protection where corrosion from water, gas or airborne particulates may be an issue. With multiple installation methods and a safety chain design, the Stephenson Series is a unit that can be relied upon.

At Kellwood Lighting, Our team is here to help you find the best led light fittings for your project. You can enquire about this specific product via the link on this page. Alternatively feel free to speak to a member of our team on +44 (0)1387 255816.

A summary of the light's specifications is shown below. Please refer to the product data sheets (available in the Downloads tab) for further details.

Light Source and Photometric Parameters
Chip Brand, & ModelOsram Duris S5
Light EmissionDirect
CCT3000K*, 4000K, 5000K, 6000K
CRI>70, >80*
Symmetric Light Distribution120°
Asymmetric Light DistributionN/A
Lens OpacityClear, Frosted
Ingress RatingIP66
Impact ResistanceIK10/IK08 or IK10/IK10 - see data sheet
Ambient Usage Tolerance-20° to 55°C
Ambient Humidity Tolerance10% to 90% RH
Ambient Storage Tolerance-20° to 55°C
Input Voltage100-277VAC, 200-277VAC - see data sheet
Input Frequency (VAC)50-60Hz
Power Factor>0.98
Surge Protection5KV
Electrical ConnectionTerminal Block
Inlet ThreadM25, NPT3/4", M20
Fixture Primary MaterialsAluminium Alloy
Fixture FinishPowder Coated
Lens(es) MaterialTempered Glass
Dimming OptionsN/A
Built-in ControlsN/A
Mounting StylesTwin Surface Mount Brackets, Twin Eyebolts, Twin Pipe Clamp Mount, Stanchion Mount, Clamp Mount
Available Product ColoursOrange (RAL2011), Grey (RAL7040)
Miscellaneous Accessories3Hr Emergency (Remote-Testing), Wire Guard
Duration3 Hours
Testing TypeRemote-Test
OperationMaintained, Non-Maintained
Output Wattage5W
Battery TypeNiCd
Temperature Tolerance25°C (unless otherwise agreed)
Warranty3 Years
  • Zone 1 Group II; ATEX, and IECEx certified
  • Thermal performance; the housing's unique design ensures optimised cooling of the PCB (LEDs) and drivers, resulting in extended PSU lifetime and increased lumen maintenance
  • Hazardous Environment Protection; ensured by copper-free alloys, IK10 impact resistance (when ordered with a wire guard accessory), corrosion-resistant paint finish, stainless steel fixings, and IP66 ingress protection
  • Various Sizes; 2ft, 3ft, and 4ft housings available with a wide range of lumen outputs make it suitable for most new-builds and retrofits
  • Grey or Orange; fitting colours selected to blend in with environment or ensure product is clearly visible to avoid bumbs and knocks
  • Mounting Options; a wide range of mounting options, including surface, pipe-clamp, and adjustable angle brackets provides versatile installation
  • Supplied with Glands; M25, NPT3/4", and G3/4" inlet thread options supplied with compression glands certified with the product
  • 3Hr Emergency; optional 5W 3 hour emergency output
  • Safety Chain; stainless steel safety chain increases safety during installation


  • Ex d eb op is IIB T6 Gb (standard) or Ex d eb op is IIC T6 Gb (optional)
  • Ex tb op is IIIC T80°C Db



  • LVD (Directive 2014/35/EU)
  • EMC (Directive 2014/30/EU)
  • RoHS (Directive 2011/65/EU)
  • ErP (Directive 2009/125/EC)

Please refer to the Declaration of Conformity (DoC) and/or product data sheets for individual standards, or contact our Technical Team for further clarification on certification and compliance.

Performance Summary
Series CodeSTE5
Lengths2ft, 3ft, 4ft
Key Options3Hr Emergency
Nominal Power (Range)18W to 72W
Luminaire Efficacy @ CRI>70 6000K CCT130 lm/W
Lumen Output @ CRI>70 6000K CCT2,340 to 9,360 lumens
Lumen Maintenance (TM21 Calculated)L80B10 >98,924 hours
Primary ConformitiesATEX, IECEx, CE
Warranty5 Years (3 Years Emergency)
Optic DistributionDesign FeaturesTypical ApplicationsGallery & Case StudiesRelated Products


H7V7-120º H7V7-120º

Please note - images shown are intended to be illustrative only.
For exact data, please refer to specific product photometry, available in the above download section.

ATEX Lights designed for


Designed to be compact and versatile, the Stephenson Series is ideal in applications such as inspection pits. spray booths, chemical stores and similar hazardous areas.

High CRI and efficacy is achieved through quality components and SEOUL light sources.

  1. Emergency/Motion Sensor Options:
    The Stephenson 5 series offers an optional integrated 3 hour remote-test maintained emergency function.
  2. Impact Resistance: Risk of early failure is mitigated by using a shock and vibration-resistant aluminium alloy housing capable of withstanding an impact of up to 10 Joules (IK10). A tempered glass lens provides impact resistance up to IK08. An optional stainless steel guard increases this to IK10.
  3. Thermal Performance: Careful PCB design ensures effective heat dissipation from the LED chips. This lowers the junction temperatures, improving lumen maintenance and increasing the lifespan to the product.
  4. Mounting Options: The Stephenson Series is available with a range of mounting options; twin surface mount brackets, twin eye bolts, twin pipe clamp mount, stanchion mount, clamp mount.
Stephenson Design for Purpose Diagram



  • Petroleum Industry
  • Petrochemical Industry
  • Power Generation
  • Power Transmission
  • Machine Manufacturing
  • pump rooms


A leading Mechanical and Electrical consultant asked Kellwood to provide an
inspection pit lighting solution, this time for a new Freightliner maintenance site in the south-east of England.

Read More about our Freightliner work

Blog Posts

Our lights are used by

BookerBrewdogSantanderDupontGlenfiddichSparLogoplasteLogainairNHSLothian BusesWabtecWalkers
Customer Reviews Bg
  • I am delighted to have used Kellwood...

    - P. Nisbet, Wabtec Corporation

  • a project that was well planned and promptly accomplished

    - E. McHugh, Loganair

  • Where others let us down, Kellwood did not

    W. Coley, Barking Abbey School

  • ...my client is over the moon with the end results

    A. Fraser, MacLean Electrical

  • I'd certainly recommend them

    V. Richardson, Stolle Europe

  • I'm more than pleased with the guys. I'd recommend them to anyone

    G. Gray, Logoplaste

RecolightScottish Engineering