Kosnic Nitro Emergency Downlight Corridor 3W Non-Maintained White

Kosnic Nitro NTR03/COR — 3W Non-Maintained LED Emergency Downlight with Corridor Optics

The Kosnic Nitro NTR03/COR is a discrete recessed LED emergency downlight fitted with a corridor-specific lens designed to concentrate illumination along a single axis — making it the right choice for escape routes, stairwells, and long internal corridors where directional coverage is a compliance requirement. Fitting into a standard Ø50mm cut-out and weighing just 0.10kg, it installs cleanly into any interior ceiling without disrupting the finish.

Corridor Optics for Targeted Escape Route Coverage

The NTR03/COR's asymmetric lens directs light along one axis more than the other, delivering focused illumination down the length of a corridor rather than spreading it in a wide circular pattern. This makes it a more effective and specification-appropriate choice than a standard circular-beam downlight in narrow escape routes, where even, consistent lux levels along the path of travel are required by BS 5266. Emergency luminous flux is 150lm, with a maintained flux of 200lm, all from a maximum input of 3W at 154lm/W maximum efficiency.

Discreet Recessed Installation

A Ø50mm cut-out and Ø70mm face diameter means the NTR03/COR fits standard ceiling apertures with a minimal ceiling footprint. At 33mm deep and just 0.10kg, it places no meaningful structural demand on ceiling panels, and its plain white face plate disappears into the ceiling plane during normal operation. Class II double-insulated construction means no earth connection is required, keeping first-fix wiring straightforward.

Manual Test, 4-Year Battery, Simple Ongoing Maintenance

Manual emergency operation testing is built in, allowing compliance checks to be carried out on-site without additional equipment. The 4-year battery life reduces the frequency of replacement visits across multi-fitting installations. The unit operates between 0°C and 45°C on a 220–240Vac 50/60Hz supply, covering standard internal building environments throughout its service life.

Key Features of the Kosnic Nitro Corridor Optics Emergency Downlight NTR03/COR Include:

• Corridor Lens Optics — Asymmetric Beam Concentrates Illumination Along One Axis for Escape Route Compliance
• Non-Maintained Operation — Emergency Lighting Activates Only on Mains Failure (>3 Hours)
• 150lm Emergency Luminous Flux / 200lm Maintained Luminous Flux — Clear, Bright 6,000K Cool White Output
• Maximum Efficiency: 154lm/W — Effective Emergency Illumination from Just 3W
• Manual Emergency Operation Test — On-Site Compliance Testing Without Additional Equipment
• Self-Test Version Also Available
• 4-Year Battery Life — Reduces Routine Battery Replacement Frequency Across Large Installations
• Ø50mm Cut-Out — Fits Standard Ceiling Apertures with Minimal Visual Impact
• IP20 Rated — Suitable for Standard Internal Installations
• Class II Double Insulated — No Earth Connection Required
• Ambient Temperature Range: 0°C to 45°C
• Input Power (Max): 3W @ 220–240Vac 50/60Hz
• Power Factor: 0.4
• Face Diameter: Ø70mm
• Depth: 33mm
• Weight: 0.10kg
• Product Warranty: 4 Years

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