Wholesale only · Shenzhen warehouse · Same-day stock check +86 153 2343 9001info@wcimci.com
WCIMCILED Parts
+86 153 2343 9001 Get a wholesale priceQuote
Home/Products/Power Supplies
3.3V – 5V · 200W – 400W

Power Supplies

5V, 4.5V, 4.2V and 3.8V LED power supplies from 200W to 400W, indoor and glue-potted waterproof, Mean Well and G-energy among them.

17 lines in stock5 sub-categoriesNeutral / branded as marked
5V Power Supplies 4.5V Power Supplies 4.2V Power Supplies 3.8V / 3.3V Power Supplies Waterproof (Glue-potted)

LED power is a boring purchase until one fails in July. The failure mode is almost always thermal: a 300W unit pushed to 280W continuous inside a sealed cabinet with no airflow will lose its electrolytics in two summers. We size supplies at 70–80% of nameplate for outdoor cabinets and 85% for indoor ones, and we say so on the quote instead of letting the BOM look cheaper than it should.

Voltage is the other trap. A 5V module run at 4.5V loses brightness; a 4.2V common-cathode module run at 5V cooks its driver ICs. Match the supply to the module's rated voltage, and if a wall mixes both, split the feeds — do not average them.

What to check before ordering

  • One 300W supply carries roughly 6–8 m² of P4 outdoor module at 60% average load. Do not size by peak wattage printed on the module datasheet.
  • Potted supplies run cooler in humid climates but cannot be repaired. For coastal sites, potted; for inland, serviceable is fine.
  • Keep the AC feed balanced across phases. A wall pulling 60A on one leg trips breakers that the total load says should be fine.
5V Power Supplies

5V Power Supplies

The default for most indoor and outdoor SMD modules. 200W / 300W / 400W.

MOSO (茂硕) Indoor LED Driver MOSO
Indoor LED driver

MOSO (茂硕) Indoor LED Driver

MOSO indoor LED drivers for LED display cabinets: 5V range with intelligent protection, quoted against the cabinet load and destination market.

  • MOSO / 茂硕电源
  • Indoor LED driver
  • 5 V DC
Quoted on requestMOQ 2 pcs
Full specification
All 5v power supplies
4.5V Power Supplies

4.5V Power Supplies

For common-cathode and energy-saving modules that spec 4.5V.

All 4.5v power supplies
4.2V Power Supplies

4.2V Power Supplies

Common-cathode indoor modules; 300W and 400W frames.

All 4.2v power supplies
Waterproof (Glue-potted)

Waterproof (Glue-potted)

IP67 potted units for outdoor cabinets and coastal installations.

All waterproof (glue-potted)
Straight answers

Power Supplies — the questions that come up

Mean Well or domestic?
Mean Well if the site is remote, hot, or the client names it in the contract. G-energy and the better Shenzhen brands are reliable at 40–50% less, and we have run both in outdoor cabinets for years. We will not pretend they are identical — the difference shows up in year three.
Can you supply 110V input?
Yes, most models in the range have a 110/220V switch or a wide-input version. State the destination country on the enquiry and we ship the right variant.
How many spares should I order?
One per ten for outdoor, one per twenty for indoor. They are small, cheap to ship, and a dead supply takes a whole cabinet down.

Need a power line that is not listed?

Send the part number, the matrix or a photo of the label. We confirm stock and price the same working day.

Ask for a quote See all categories