NUMINOS L CL PHASE is a surface-mounted SLV ceiling light in the shape of a cylinder, 10 cm in diameter and 21.3 cm high. The aluminium housing has a matt black finish and a plain form without ornament, and the light leaves only through the lower edge in a 60° beam. The LED module and driver are built into the fitting, so it connects directly to the 230 V mains.
How much light it gives, and what kind
The light draws 20 W and produces 2600 lm, more than three times what an old 60 W bulb gave; the manufacturer states an efficacy of 130 lm/W. A colour temperature of 4000 K is neutral white, and a colour rendering index of Ra 90 means objects under it show their colours naturally — which matters over a worktop, a table or a shelf.
The light falls only downwards in a symmetrical 60° cone, so the fitting lights a circle beneath it rather than the ceiling around it. Its glare rating is UGR 19 or lower, within the limit the lighting standard sets for office rooms.
Dimming and light source
The light can be dimmed with a trailing-edge phase dimmer (code C) — the manual names only this type. The LED source is integrated: the module and the driver are replaced only by a professional, not by the user. The manufacturer states a service life of 50,000 hours, after which the fitting still delivers at least 90% of its initial flux (L90).
Mounting and accessories
NUMINOS L CL is designed only for surface mounting on a ceiling, so no hole has to be cut and no void above the ceiling is needed. It is protection class I, which means it must be connected to an earth conductor, and the manual reserves installation for a qualified electrician. The manufacturer intends it for dry indoor rooms. The fitting weighs about 1 kg.
The ring at the light outlet can be swapped for a white, matt gold or matt copper one — SLV sells these separately as accessories for the NUMINOS L size.
