Series of LED indoor luminaires consisting of luminaire inserts and mounting rails for electrical connection, suitable for commercial and industrial applications. The luminaire housing is made of drawn powder-coated aluminium in white. Optics are made of technopolymer lenses with increased light transmission, designed for greater visual comfort with double asymmetric optics. The light source consists of several LED modules with a general colour rendering index Ra > 80. The ceiling light is attached to the electrically connected rail system with springs and without the use of tools. All rail elements are supplied complete with internal 3-phase wiring, realized with 2.5 sqmm cable, quick connectors, and automatic disconnectors for quick mounting of the ceiling light. A complete Eurostandard Plus electrical track module is available as an accessory for installing compatible spotlights.