Product Description


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


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


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 color with non-existent color rendering
Burning position SOX 35 W and 55 W: 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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