24V DC LED Strips: The Professional Choice for High-Brightness, Long-Run Installations

24V DC LED strips are the benchmark in professional installations that require length, colour stability and high-quality colour reproduction. The 24V DC constant voltage allows long runs to be covered without the losses that limit 12V.

Why choose 24V instead of 12V for LED strips

The difference between 12V and 24V LED strips is not just about voltage. It is a real difference in behaviour in installations longer than two metres.

Lower voltage drop over long lengths

Voltage drop over the strip length is the most common problem with 12V: the longer the run, the greater the resistance and the lower the voltage at the far end. With 24V that effect is reduced by half. For lighting projects exceeding five metres in a single run, 24V is the technically correct choice.

Greater efficiency and colour stability

Fixed colour temperature versus CCT stays within tolerance when the voltage does not drop below the chip's correct operating threshold. With 24V that margin is greater, which is decisive in shop windows, display cases or premium kitchen furniture.

Types of 24V LED strips available

The range covers everything from the high-brightness 24V LED strip for commercial use to specialised formats for furniture interiors.

High-density SMD2835 with up to 238 LEDs per metre

The professional 24V SMD2835 LED strip uses the high-density SMD2835 LED chip. The 24V LED strip with 238 LEDs per metre eliminates the dot effect and is the benchmark for professional kitchen furniture installation.

CRI Elite 98 for maximum colour fidelity

The 24V CRI98 Elite LED strip incorporates CRI98 for maximum colour fidelity. A CRI of 98 makes colours practically indistinguishable from those seen under natural light. For lighting professionals working in jewellery shops, this figure is a requirement.

Selectable CCT to adapt to the environment

The 24V selectable CCT LED strip allows the colour temperature to be chosen at the time of installation without changing the model. The temperature range runs from 2,700K to 6,500K. Colour temperatures and other parameters are specified in the technical data sheets for each reference.

24V power supplies

The power supply for a 24V LED strip must be correctly sized. An undersized power supply causes flickering or premature degradation of the chip.

How to choose the correct power rating for the power supply

Multiply the consumption in W/m by the total number of metres and add a 20% margin. A 20 W/m LED light strip over 5 metres requires a power supply of at least 120 W.

The 24V power supply for LED strips must be regulated and stabilised. Only then does the system function correctly.

GXtronic IP20 models for indoor installation

The GXtronic IP20 power supply is the benchmark for dry indoor installation. GXtronic models range from 30 W to 600 W and are compatible with PWM 0-10V intensity dimming. The IP20 indoor 24V LED strip does not require further protection in cabinets or false ceilings.

Maximum length and calculation without voltage drop

The maximum length of a 24V LED strip without voltage drop depends on the power per metre and the cable cross-section. As a reference, a 14.4 W/m strip reaches 10 metres without exceeding a 3% drop. For longer lengths, dual feeding is recommended. The 5-metre 24V LED strip pack is the standard format for under-furniture installation.

Dimming and control of 24V LED strips

24V DC LED strips are compatible with the main control systems on the market.

PWM and 0-10V dimming

The dimmable DALI/PWM 24V LED strip supports PWM 0-10V intensity dimming to adjust the output between 0% and 100% without flickering. Dimmers must be specific to 24V DC.

Compatibility with DALI systems and home automation

24V DC LED strips support DALI controllers via specific drivers. Compatibility with KNX is achieved using gateways.

Professional applications

24V DC LED strips are present in the most demanding sectors.

Lighting for kitchen and bathroom furniture

The professional 24V under-cabinet kitchen LED strip is the benchmark for high-end manufacturers. The solderless 24V LED strip connector allows solder-free joints and speeds up assembly in production.

Shop windows and jewellery display cases

The 24V shop-window LED strip with CRI98 reproduces colours accurately. The 24V COB flip-chip LED strip offers high-density COB technology with continuous light and no visible dots.

Interior architectural lighting

24V DC LED strips are integrated into aluminium profiles recessed into ceilings, walls and floors. The energy efficiency of high-density models contributes to the growth of the sector and places these solutions at the technological forefront.

Recommended aluminium profiles for 24V

A heat-dissipating aluminium profile is necessary for high-power strips. The LED strip acts as a light source and generates heat at the chip junction. Without adequate heat dissipation, service life is reduced and colour shifts.

Check out our range of aluminium LED profiles: recessed, surface-mounted, corner or suspended. The references include technical data sheets with photometric data.

We are European leaders in professional lighting, a leading online shop and a leading online distributor of LED systems. We have experts at your service to help you select the complete system, with personalised customer care and guaranteed pricing. Our team of experts at your service handles projects of any scale, with up-to-date new LED solutions.

The growth of the sector confirms that 24V is the professional standard. We work with installers, interior designers and manufacturers seeking energy efficiency and the latest developments from the fastest-growing commerce in flexible systems.

Frequently asked questions about 24V DC LED strips

What is the difference between 12V and 24V LED strips?

The difference between 12V and 24V LED strips lies in the voltage drop over the strip length. With 24V you can install double the length without colour degradation or loss of intensity.

How many metres of 24V LED strip can I connect to one power supply?

With a 14.4 W/m strip and a 100 W power supply, the maximum is 6.9 metres with a safety margin.

What power supply do I need for 10 metres of 24V strip?

Multiply the W/m by 10 and add a 20% margin. For 20 W/m over 10 metres you need at least 240 W. Check out our 24V power supplies.

Can 24V LED strips be dimmed with a standard dimmer?

No. 24V DC LED strips require a dimmer specific to 24V DC constant voltage. PWM 0-10V intensity dimming is the most widely used system.

What CRI do I need to light a jewellery display case?

The 24V CRI98 Elite LED strip is recommended. CRI98 for maximum colour fidelity guarantees that the colour of the pieces is perceived accurately.

Can several 24V LED strips be connected in parallel?

Yes, provided the 24V power supply for the LED strips has sufficient power for the combined consumption.

Which aluminium profile is best for high-power 24V LED strips?

A wide-wing heat-dissipating aluminium profile. A greater aluminium surface area means lower temperature and longer service life. Check out our range of aluminium LED profiles.