Recessed luminaire; Sheet steel housing with uniformly wide circumferential edge and 7 mm raised edges for ceilings with visible T-rails, concealed symmetrical rail constructions and cut-out ceilings; Housing colour traffic white RAL 9016; Direct light distribution using reflectivity-enhanced MIRO® aluminium parabolic louvres, silk-matt anodised, for computer workstations, 65° < 1000 cd/m² omnidirectional glare reduction according to the current DIN EN 12464-1 standard, self-engaging, can be swung down on both sides; The light source and driver are removable in accordance with the EU 2019/2020 ecodesign requirements and can be replaced in the factory. Electrical connection via 3-pole connection terminal with plug-in contacts.. UBB universal mounting brackets for concealed symmetrical rail constructions or recessed ceilings and SCT CLIPS securing clips for ceilings with visible T rails: please order separately. Dimensions (LxWxH/DxH): 1547mm x 310mm x 58mm Ceiling system: Ceilings with visible T-rails [s-TS] (312.5x1550mm), Concealed symmetrical rail construction [VS] (312.5x1550 mm), cut-out ceilings [AD] Installation depth: 120mm [AD]; 170mm [s-TS]; 120mm [VS] Ceiling cut-out (LxW/D): 1480mm x 275mm Placement: LED, Colour rendering/Light colour CRI ≥ 80 / 4000K Colour tolerance: 3SDCM LED service life: 50000h L80/B10 (Tq 25°C) Nominal luminous flux: 3880lm Luminaire luminous efficiency: 147lm/W Controller: Electronic driver (1 pcs.) System output: 26W Energy efficiency class/light source: C Mains voltage: 230V Mains frequency: 50Hz Impact resistance (IK rating): IK03 Ambient temperatur: ta 25°C UGR lat./long.: 15.3 / 18.9 Certification mark: IP20, Protection class I, VDU 65°<1000, ENEC10 VDE, F, F-“roof” mark, Indoor, CE Regiolux GmbH Type: RSEX/312 -1550 LED 3900 840 ET vw RAL 9016 Article number: 71310304160 Product deep link: https://www.regiolux.de/en/article/71310304160 General warranty conditions: www.regiolux.de/en/Service/Warranty