ABB – Lumacell: LRAU Series Recessed Architectural Battery Unit
February 20, 2026
LRAU Series Recessed Architectural Battery Unit Offers a Versatile Emergency Lighting Solution
The LRAU Series of recessed emergency lighting units from Lumacell shall include an all-metal housing and a thermoplastic rectangular trim-plate with a detachable circular trim ring for choice of aesthetics. The optics shall be an impact-resistant polycarbonate lens with fixed light distribution, optimized for ceiling heights up to 3.7m (12′). The housing shall include an isolated compartment for electrical connections and a detachable cover with knockouts for electrical supplies.
The LRAU Series unit shall include a hardware kit for installation in T-bar suspended ceilings. The emergency lights shall be four high-intensity LED with operational life of minimum 36,000 hours, until 70% of the initial light level (reported L70). The LEDs shall have redundant interconnections: eventual failure of one of them shall allow others to function. The unit shall have a two-wire universal input rated 120-347VAC, 50/60Hz and shall be equipped with a lithium battery.
The charger circuit shall provide: AC lock-out, brownout transfer, and battery disconnect at the end of discharge. The charger shall be micro-controller-based and include self-test and diagnostic functions; the unit shall self-test for one minute every month, 30 minutes every six months and 90 minutes annually.
The pilot light shall be a bi-color LED, installed behind the main optics and shall change color from normal green to flashing red when a failure is detected from the battery, charger circuit or lamps. A label located on the equipment housing shall describe the diagnostic for each flashing code. The unit shall be supplied with an infrared remote test control to start a manual test of one-minute duration or cancel it if needed. The unit shall be cUL certified to CSA 22.2 No.141
The LRAU Series has a fixed lighting distribution, optimized by design for ceiling heights up to 3.7m (12′). The LRAU Series delivers a stable and optimal illumination easy to specify. Along an office corridor the space coverage ranges from 18.9 to 24.4m (62 to 80′). The square distribution pattern covers a surface of 67.2m2 (729 ft²).
Specifications
- Recessed installation in T-bar suspended ceiling and easily spring mounted in Gyproc ceiling
- All-metal backbox enclosure
- Thermoplastic rectangular fixture with additional round trim-plate, white finish
- Long-life, high-temperature rated lithium battery
- Infrared remote test control (up to 9.1 m/30′)
- Two-wire universal AC input: 120 – 347VAC 50-60Hz
- 90 minutes of emergency lighting
- Fixed optics, optimized light distribution for ceiling heights up to 3.7 m [12′]
- Four high-intensity LED sources with redundant connections; CCT 5000K
- Listed NSF, splash non-food zones
- Certified cUL to CSA 22.2 No.141
- Optional housing for plenum or insulated ceilings (IC)
- Black thermoplastic decorative trim-plates
- NEXUS Pro: IOT emergency lighting monitoring system optional
- Fixed, square distribution pattern up to 3.7 m [12′] ceilings
- Self-test and diagnostic functions
For more information on ABB – Lumacell lighting solutions HERE
