LED Power Supplies & Drivers (12V / 24V)

How is an LED power supply wired, and which input range do I need?

The mains side connects to the supply input, and the DC output feeds the switch or controller, which then feeds the strip. Keep the polarity of the DC output consistent through the switch to the strip, and never connect a strip directly to the mains side.

Plug-in supplies such as the 1T9412V / 1T9424V come with a mains plug, which suits furniture sold as a plug-in product. Hard-wired supplies need a fixed mains connection. Work on the mains side must be done with the power disconnected and by a qualified electrician.

Check the input range against every market the product ships to. The HM slim and ultra-slim series are listed for 220V input, which suits 220V-class markets only. The JL-1236, the ultra-thin cabinet transformer and the IP55 supply are listed for 100-265V, the 12V 60W switching supply for 100-250V AC and the 1T9412V / 1T9424V plug-in series for AC110V-250V, which covers both 110V-class and 220V-class markets. The LB-12V-4AN is listed for AC180-240V.

How do I calculate the supply size?

Add the watts of every strip on the supply, plus any defogger pad that shares it. Current at the output is watts divided by voltage: the LB-12V-4AN is listed at 12V, 4A and 48W, and 48W ÷ 12V = 4A. A 36W supply such as the JL-1236 gives 36W ÷ 12V = 3A.

The HM slim series is offered in 18W, 24W, 36W, 48W, 60W and 72W, and the HM slim long series adds 100W. Pick the step above your total load rather than the closest figure, and confirm that each switch on the output is rated for the strips it controls.

If one product needs both 12V and 24V strips, use two supplies. A 12V supply will under-drive a 24V strip, and a 24V supply will overload a 12V strip.

Which case type fits the installation?

Slim and ultra-thin cases fit behind mirrors and inside cabinet kickboards. The IP44 LB-12V-4AN and the IP55 12V supply give more protection for positions exposed to splashes, such as bathroom furniture. The JL-1236 includes an internal relay, which lets the mirror light be switched without a separate relay module.

Allow air around the case. A supply packed in insulation or sealed behind glass with no gap runs hotter, so follow the mounting notes on the product page.

What mistakes should be avoided with LED supplies?

Typical errors: a 220V-only supply shipped to a 110V-class market; a supply sized for the strips but not for a defogger pad on the same output; a 12V supply ordered for a 24V strip; and a slim supply fitted where it has no air around it. Another is reading the largest figure in a series heading as the rating of every unit: the ultra-slim series is headed 18-120W, while its listed loads run from 18W to 72W, so confirm the exact unit before ordering.

What can be specified on OEM supply orders?

Tell us the output voltage, total load, input range, plug type or hard-wired leads, the case size limit and the connectors on the output lead. We confirm which model fits and which wattage steps and lead options are available for it.

Compare by type