• Product Description

    • Highest reliability ensures the lowest total cost of ownership
    • Stable power consumption through life maintains low energy use and contributes to low cost of ownership
    • Extremely high luminous efficacy; the most efficient light sources for road, security and tunnel lighting


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Product family information

Low-pressure sodium vapour lamps with a U-shaped discharge tube enclosed in a clear tubular outer bulb under vacuum that is maintained by a solid-state getter


Philips Solid-state Getter (PSG) for highest reliability over life
Uniform sodium distribution in the discharge tube by means of dimples for a more stable discharge, stable power consumption, shorter run-up time, higher efficacy and better lumen maintenance and lamp life
Monochromatic yellow colour with non-existent colour rendering
Burning position SOX 35W and 55W: base-up ±110° (universal burning position when luminaires installed in shock-free positions)


Road lighting, railway marshalling yards and crossings, airports, harbours and docks, quarries, foundries and rolling mills
Security and orientation lighting
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Smart Buildings

19.10.2016, Birmingham NEC

Presentation: ‘Connected Lighting for Offices - Beyond Illumination’ by Darren Smith

Grand Designs Live

Find us on Stand L190, Technology Zone,
Hall 5

19-23.10.2016, Birmingham NEC

Highway Electrical Association (HEA)
Annual Conference
03.11.2016, Celtic Manor, Newport


9-10.11.2016, Canary Wharf, London

View all events