48V LED Strip Lights: Complete Guide to Choosing, Specs, and Wiring

A 48V LED strip is a strip fitted with SMD or COB LEDs, designed to run on 48V DC power. It's the highest voltage among low-voltage LED strips, used wherever you need the longest possible seamless run — up to 20 meters without brightness loss. The 48V format draws half the current of 24V and a quarter of 12V for the same power output, so it lets you use thinner cable even over long distances. ARTLED's 48V range is mostly dense and COB variants built for premium architectural lighting, retail floors, hotels, and large commercial projects.

How 48V differs from 12V, 24V, and 220V strips

The main advantage of 48V is the lowest possible operating current for a given power output, which means minimal voltage drop even on long runs. That reduces the wire gauge you need and the number of power-feed points required on large installations.

✓ 12V — short, localized runs up to 5 m: shelves, furniture, small niches.

✓ 24V — mid-length seamless runs up to 10 m: kitchens, hallways, ceiling perimeters.

✓ 48V — the longest seamless runs, up to 20 m: large commercial spaces, hotels, architectural facade and ceiling lighting.

✓ 220V — outdoor lighting over tens of meters without a separate power supply per segment.

Technical specs: LED density, chip type, power draw

In the 48V format, each series segment contains more LEDs than on a 12V or 24V strip, so the cut spacing is usually longer — 10–20 cm depending on the model. This format is more often found in dense and COB variants built for even, dot-free linear light.

Every 48V strip model in the ARTLED catalog lists its LED density, power per meter, and color temperature (2700K–3000K warm white, 4000K neutral, 6000–6500K cool white), along with RGB and RGBW options for color-controlled projects.

IP rating — which strip goes where

✓ IP20 — no protection, dry rooms only: ceilings, niches, indoor suspended structures.

✓ IP65 — silicone-coated on top, splash-resistant: semi-protected areas, canopies, covered terraces.

✓ IP67 — fully silicone-sealed, rain and dust protection: outdoor architectural facade lighting.

✓ IP68 — fully sealed, submersible: pool, fountain, and pond lighting.

Power supply: how to size it

Size the power supply for a 48V strip using the same formula as for 12V/24V: strip length (m) × power per meter (W) × 1.2–1.3 (a 20–30% margin for stable, cool operation). The key difference is a quarter of the operating current compared to 12V at the same power output, which lets you feed long lines with thinner cable and minimal losses.

Example: 20 meters of a 120 LED/m strip (10 W/m) = 200 W rated draw. With a 25% margin, you need a 250 W power supply.

Wiring and installation

✓ Only cut the strip along the marked lines with the scissor icon — cut spacing is usually 10–20 cm depending on the model.

✓ Join segments with solderless connectors (dry indoor spaces) or solder with copper wire of 0.75 mm² or thicker (more reliable, and required for IP65+).

✓ For runs longer than 20 m, feed power from both ends or use a booster cable of 1.5 mm².

✓ The 3M adhesive backing lasts 5–7 years on a clean, degreased surface; for aluminum or demanding conditions, add a mounting profile.

✓ Before buying a controller, dimmer, or booster, check with ARTLED's specialists that it's rated for 48V — not every standard accessory supports it by default.

Common mistakes when choosing and installing

✓ Connecting a 48V strip to a 12V/24V controller or dimmer — the accessory fails instantly from over-voltage.

✓ Undersized power supply — causes overheating, protection trips, and a shortened lifespan.

✓ Choosing 48V for a short run — needlessly complicates and raises the cost of a project when the run is under 5–10 m, where 12V or 24V is enough.

✓ IP20 strip in a damp area — contacts corrode quickly and fail within months.

✓ Cutting outside the marked line — disables the last segment of the strip.

Conclusion

A 48V LED strip is the right choice for projects that demand the longest possible seamless line of light with no feed points along the way: large retail floors, hotels, architectural lighting. Choosing the right LED density, IP rating, compatible accessories, and a power supply with adequate margin ensures stable, bright light for the strip's full rated lifespan — up to 50,000 hours.