General
Built-in diameter	68 mm
Colour rendering index	90 Ra
Colour difference	3 SDCM
Dimming function	Phase cut-off
Material	Aluminium die-cast
Surface protection	powder-coated or galvanised
Colour of light	940
Type of control gear	included
Connection box	With through wiring (L, N, PE) and plug-in terminals
Application range	Intermediate ceiling
Built-in luminaire	LED
Heat sink	Aluminium
Front glass	Real glass
Reflector	Real glass
Compatible mounting boxes	KAISER HaloX® 100 with tunnel 190 (Type 1281-30), HaloX® 180 with tunnel 190 (Type 1282-72/1282-75)

The Nobile Downlight model 1856850913 is an LED recessed luminaire for use in spot and general lighting applications. It is particularly suitable as a solution for ceilings with limited installation depth, and may only be installed in suspended ceilings. The construction includes a front glass, a real glass reflector, and an aluminium heatsink, which ensures efficient heat dissipation. The enclosure surface is either powder-coated or galvanised, providing a robust and long-lasting coating. The recessed luminaire is designed for an installation diameter of 68 mm and is supplied with an integrated power supply unit, which is dimmable via phase-cut dimming.

Applications

The luminaire is designed for indoor use, particularly in rooms with limited ceiling thickness, where a shallow recessed solution is required. It is suitable for residential and commercial spaces, office areas, and other areas where point or general lighting with good light quality is needed.

Functions and Equipment in Detail

The luminaire features a real glass reflector, which ensures even and diffuse light distribution. The front glass protects the optical components and contributes to a clean optical design. The aluminium heatsink ensures efficient heat dissipation, supporting the longevity of the LED technology. The light colour corresponds to colour temperature 940, which is neutral white to cool white. The colour rendering index Ra is 90, enabling good colour rendering and natural colour representation. The colour deviation (MacAdam) is 3 SDCM, indicating high colour consistency and minimal variation in light colour.

Technology Explained Simply

The integrated LED technology offers high luminous efficacy with low energy consumption. The luminaire includes a power supply unit that is dimmable via phase-cut dimming, allowing brightness to be controlled using a compatible dimming system. The lifespan is 50,000 hours (L80 B10), meaning that after 50,000 operating hours, 80% of the original light output is still achieved, and no more than 10% of the luminaires will have failed. The connection box is equipped with through-wiring (L, N, PE) and push-in terminals, enabling simple and secure electrical installation.

Compatibility and Accessories

The recessed luminaire can be installed in all common concrete recessed enclosures. Specifically tested are the HaloX® 100 with tunnel 190 (Type 1281-30) and HaloX® 180 with tunnel 190 (Type 1282-72/1282-75) from KAISER. The luminaire is designed for an installation diameter of 68 mm, ensuring compatible mounting in standard recessed boxes. Installation is carried out in suspended ceilings, with attention required to ensure minimal convection and the device must not be covered with insulation material.

Installation and Mounting

Installation is carried out in suspended ceilings, with the recessed luminaire mounted into a suitable recessed enclosure. The connection box allows for easy wiring with through-wiring (L, N, PE) and push-in terminals. Mounting requires adherence to convection and insulation guidelines to ensure sufficient cooling of the heatsink. The luminaire is not intended for use in ceilings with insulation or in areas with high thermal load.

Operational Advantages

The luminaire offers high light quality with good colour rendering (Ra 90) and low colour deviation (3 SDCM). The integrated phase-cut dimming function enables flexible brightness control. The long lifespan of 50,000 hours (L80 B10) reduces maintenance and replacement requirements. The robust construction from aluminium die-casting and the powder-coated or galvanised surface ensure high mechanical stability and durability. The recessed luminaire is designed for easy installation in standard recessed boxes, reducing installation time.