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  • Base: 92943861 — CETUS3 M LCS HF E3D RWH

Data Sheet

A low height, recessed LED downlight. Suitable for ceiling cut-outs Ø145-180 mm for easy refurbishments or fast initial installations. Remote, pluggable, Fixed output LED driver with 3 hour, Self/DALI Addressable 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: Ø195 x 100 mm
Luminaire input power: 25.4 W
Luminaire luminous flux: 3221 lm
Luminaire efficacy: 127 lm/W
Weight: 1.09 kg

Mode selection
  • Lamp position:LCS High 840
  • Light Source:LED
  • Luminaire luminous flux*:3221 lm
  • Total emergency luminous flux:490 lm
  • Luminaire efficacy*:127 lm/W
  • Colour Rendering Index min.:80
  • Ballast 1:1 x 28003812 LC 25/200-650/38 NF SR EXC3
  • Ballast 2:1 x 28005149 LC 25/200-650/38 NF SR EXC3 Z
  • Ballast 3:1 x 89800795 EM TR EM convLED PRO PT 203 NiMH 50V
  • Correlated colour temperature*:4000 Kelvin
  • Chromaticity tolerance (initial MacAdam):3
  • Rated median useful life*:L80 50000 h at 25 °C
  • Luminaire input power*:25.4 W Power factor = 0.94
  • Charging power:2.4 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