TRT Lighting, a UK manufacturer of LED lighting products, has introduced the R-Range, an LED luminaire designed for road and rail tunnel environments.
The fitting has been developed to meet S12 fire safety requirements, which govern material behaviour, smoke generation, and flame spread in transport and sub-surface infrastructure.
Its construction includes low-plastic-content materials, EN45545-2 approved gaskets, and optional ceramic terminal blocks to support compliance in rail and transport projects.
R-Range is intended for locations where fire safety performance, durability, and reliable access for maintenance are important considerations.
Designed for maintenance and tunnel access
Tunnel maintenance can be challenging due to restricted access and limited closure periods. R-Range has been designed to simplify servicing and reduce time spent on site.
The luminaire includes tool-free access to the internal components. The optical assembly, containing the LED optics, can be replaced as a complete unit without removing the main housing. This allows quicker replacement and helps reduce disruption during maintenance work.
At the rear of the fitting, the driver is mounted on a removable steel plate secured by two captive fasteners. This arrangement allows the driver to be replaced independently of the optical chamber.
Safety retention mechanisms are also included to secure the door during servicing.
Construction for harsh environments
R-Range is built with a 316L stainless steel body to provide C5M corrosion resistance in environments exposed to moisture, pollution, and temperature changes.
The luminaire has an IP66 ingress protection rating and IK08 impact resistance, helping to protect against dust, water jets, and physical impact. It is designed to operate in temperatures ranging from -20°C to +40°C.
The fitting complies with the BS EN IEC 60598 standards for luminaires.
R-Range can also be integrated with TRT Lighting’s Lumi-LinQ wireless lighting control system, enabling functions such as adaptive dimming, remote monitoring, and energy performance management.
DALI dimming options are available for projects that require additional control flexibility.
The luminaire is available in multiple wattages, producing outputs of up to 3,314 lumens, and has a rated lifespan of 100,000 hours (L90/B10).
Designed as a replacement for existing tunnel luminaires, the fitting uses common fixing centres and twin cable glands compatible with three-core 16mm² SWA cable to support retrofit projects.