Decorative square LED surface-mounted luminaire. Base: pressure die-cast aluminium, powder-coated. Standard Gore™ Protective Vents diaphragm valve to avoid condensation. The large connection compartment on the back for convenient connections is also ideal for through wiring. Diffuser: high-polish crystal glass, painted inside, with fixing device. Diffuser with frame made of pressure die-cast aluminium, powder coated, bonded. Diffuser attached with clip system. Homogeneous and smooth light distribution. Suitable for ceiling mounting, wall (surface). Very easy installation thanks to plug & play connection. Base fixing slots outside of gasketed area, drill hole deviations can be compensated. MultiLumen: 2 steps adjustable luminous flux. MultiColour: Colour temperature adjustable via jumper. No factory pre-settings, colour temperature must be set during installation. Series: FLAT SLIM square Reference Number: 312538.002.76 Colour: white Length L: 300 mm Width B: 300 mm Height H: 67 mm Weight: 4.182 kg Lamp: LED Socket: Plug Colour temperature: 3000K, 4000K Colour rendering index (CRI): 80 Rated life: 50000 h (L80/B10) System power 1: 21 W Rated luminous flux 1: 2300 lm Beam angle Down 1: 122° Glare evaluation UGR (4H 8H) 1: 22.5 Luminous efficiency: 110 lm/W System power 2: 21 W Rated luminous flux 2: 2150 lm Beam angle Down 2: 122° Glare evaluation UGR (4H 8H) 2: 22.3 Luminous efficiency 2: 102 lm/W System power 3: 13 W Rated luminous flux 3: 1400 lm Beam angle Down 3: 122° Glare evaluation UGR (4H 8H) 3: 20.8 Luminous efficiency 3: 108 lm/W System power 4: 13 W Rated luminous flux 4: 1300 lm Beam angle Down 4: 122° Glare evaluation UGR (4H 8H) 4: 20.5 Luminous efficiency 4: 100 lm/W Light outlet: direct Light sharing: symmetrical Control gear: Converter, dimmable, DALI Voltage: 220 - 240 V / 50 Hz, 60 Hz Power factor: 0.95 Protection class: I Luminaires on B10A fuse: 31 Luminaires on B16A fuse: 50 Luminaires on C10A fuse: 52 Luminaires on C16A fuse: 85 Inrush current / Inrush current duration: 5 A / 50 µs Type of protection: IP 40 Ambient temperature: -20 °C ... + 35 °C Impact resistance: IK07 (2 Joule) Filament test: 960°C - 30 seconds Safety marks: F-mark Conformity mark: CE, EAC