Silica® 31 Square, office luminaire. * lighting technology 1: - primary light control with lens, of PMMA, - primary anti-glare with reflector, of PC, black, - UGR viewing direction along longitudinal luminaire axis ≤ 19 (X = 4H | Y = 8H | S = 0.25H | reflection values 70/50/20), - UGR viewing direction along lateral luminaire axis ≤ 19 (X = 4H | Y = 8H | S = 0.25H | reflection values 70/50/20), - primary beam angle: wide distribution, - light emission: direct distribution, - primary light characteristic: symmetric. * mounting: - installation arrangement: single arrangement, - installation type: lay-in mounting, - installation location: in the ceiling. * electrical 1: LED, - rated luminous flux: 4.610lm, - luminous efficacy: 177lm/W, - light colour: 840, - colour temperature: 4000K, - colour rendering: CRI > 80, - with terminal, 3-pole, - mains connection: 220..240V, AC, 50/60Hz, - rated input power: 26W. * component: - luminaire housing, of sheet steel, coated, jet black (RAL 9005). - module: M600, - length: 595mm, width: 595mm, height: 43mm, - weight: 3,1 kg. * testings/approvals/admissions: - protection rating (complete): IP20, - insulation class (complete): insulation class I (protective earthing), - certification: CE, - impact resistance: IK03, - permissible operating ambient temperature: -20..+35°C, - standard: EN 50419. * service life: - rated service life: 70.000h (L85/B50) at AT= 25°C. - packaging unit: 1 piece. * manufacture: Siteco, Silica® 31 Square. * type: 51MY6LMS44BA.