Square wall and ceiling luminaire with rounded corners. For wall or ceiling mounting. Matt diffuser with finely structured surface, uniformly illuminated. With Lambertian light distribution. Luminaire luminous flux and light color fixed. Luminaire luminous flux 3400 lm, connected load 31 W, maximum luminous efficiency of luminaire 110 lm/W. Light colour neutral white, correlated colour temperature (CCT) 4000 K, general colour rendering index (CRI) Ra > 80. Colour locus tolerance (initial MacAdam) ≤ 3 SDCM. Mean rated service life L80(tq 25 °C) = 50,000 h. The light source is replaceable according to the ecodesign requirements (VO (EU) 2019/2020). Luminaire body sheet steel. Surface coated white (RAL 9016). Diffuser of PMMA. Large construction, 520mm x 520mm. Permissible ambient temperature (ta): -20 °C - +25 °C. Safety class (EN 61140): I, protection rating (DIN EN 60529): IP40, impact resistance level in accordance with IEC 62262: IK02, testing temperature of wire glow test in accordance with IEC 60695-2-11: 650 °C. Weight: 3,0 kg. With electronic transformer, switchable. The control gear unit is replaceable in accordance with the ecodesign requirements (VO (EU) 2019/2020). The luminaire complies with the fundamental requirements of applicable EU regulations and product safety legislation and bears the CE symbol. The luminaire is also ENEC-certified by an independent testing authority.