Home / Products / Indoor Lighting / Downlights / Cetus / Cetus L, emergency / CETUS3 L LCS HF E3 RWH



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  • Base: 92943781 — CETUS3 L LCS HF E3 RWH

Data Sheet

A low height, recessed LED downlight. Suitable for ceiling cut-outs Ø190-230 mm for easy refurbishments or fast initial installations. Remote, pluggable, Fixed output LED driver with 3 hour, manual test, emergency lighting circuit. Body: die-cast aluminium for thermal management. Diffuser: polycarbonate, smooth reflector in white finish with wide beam. Reflector and trim: high quality, highly reflective polycarbonate. Class II electrical, IP43_IP20. Spring clips suitable for ceiling thicknesses from 1 to 35 mm.

For installation in concrete ceilings please contact sales
Equipped with LCS technology, with two lumen outputs (2000lm and 3400lm) and three colour temperatures (3000K, 3500K and 4000K) selectable from below by a rotary switch. Pre-set to 4000K, high luminous flux.

Dimensions: Ø248 x 100 mm
Luminaire input power: 27.6 W
Luminaire luminous flux: 3473 lm
Luminaire efficacy: 126 lm/W
Weight: 0.95 kg

Mode selection
  • Lamp position:LCS High 840
  • Light Source:LED
  • Luminaire luminous flux*:3473 lm
  • Total emergency luminous flux:450 lm
  • Luminaire efficacy*:126 lm/W
  • Colour Rendering Index min.:80
  • Ballast:1 x 89800687 EM powerLED BASIC FX SC LiFePO4 32 W
  • Correlated colour temperature*:4000 Kelvin
  • Chromaticity tolerance (initial MacAdam):3
  • Rated median useful life*:L80 50000 h at 25 °C
  • Luminaire input power*:27.6 W Power factor = 0.94
  • Standby Power*:1.1 W
  • Charging power:1 W
  • Dimming:FIX
  • Maintenance category CIE 97:C - Closed Top Reflector
  • LED
  • CE
  • EAC
  • NoIsol
  • GLedReP
  • 850°
  • Hfree
  • IK03
  • IP43_IP20
  • LLedReP
  • RCM
  • RG1
  • SC2 - Protection Class 2
  • Ta = +5 to +25
  • UKCA


Photometric configuration


Use CalcExpress to quickly carry out quick online calculations of required indoor luminaire numbers for rectangular rooms. Enter the calculation parameters for your solution such as room dimensions, mounting height, height of the useful plane and required level of illuminance, and the site will instantly suggest a solution according to the light output ratio method.

Step 1: Technical data
Step 2: Room Data
Step 3: Result