NDC250PS4.5 LED Display Power Supply
The South Creative NDC250PS4.5 powers 4.5V LED display modules. The model-specific V1.4 specification gives two input-dependent output ratings: 4.5V/40A at 100–180VAC and 4.5V/50A at 180–240VAC. Its synchronous rectification circuit is described as reaching 89% efficiency.
Product Parameters
| Parameter | Specification |
|---|---|
| Specification revision | V1.4, dated 2024-08-06 |
| Nominal output voltage | 4.5V DC |
| Output voltage range | 4.4–4.6V DC |
| Output at 100–180VAC | 4.5V / 40A, as listed on the PDF cover |
| Output at 180–240VAC | 4.5V / 50A, as listed on the PDF cover |
| Listed output power | 225W; subject to input and temperature derating |
| AC input range | 90–264VAC; rated input 100–240VAC |
| Input frequency | 47–63Hz |
| Power factor | ≥0.95 at 220VAC, full load |
| Standby power | ≤5W at 100–240VAC |
| Ripple and noise | ≤250mV peak-to-peak under specified test conditions |
| Cooling | Natural air cooling |
| Operating temperature | −40 to +80°C; derating required from 50°C |
| Storage temperature | −45 to +85°C |
| Operating humidity | 10–90%, non-condensing |
| Altitude | Up to 3000m |
| Protection | Input undervoltage, output overcurrent, overvoltage, short circuit and over-temperature |
Selecting the Correct Replacement
Check the actual AC supply, module voltage and required current before replacing a cabinet power supply. The cover uses 180V as the boundary in both input bands; for an installation near that boundary, follow the derating curve and confirm the rating for the exact unit. Do not assume that 50A is available at low input voltage or at every operating temperature.
Compare mounting positions, terminal layout and clearance with the original unit. For matching assistance, send us the existing model label and cabinet requirements.
Frequently Asked Questions
What voltage does the NDC250PS4.5 provide?
The nominal output is 4.5V DC; the specification lists a 4.4–4.6V output range.
Can I use the 50A rating on 110V mains?
The PDF cover lists 40A for 100–180VAC input. The 50A rating is listed for the higher 180–240VAC band and remains subject to derating.
Is this a 250W or 225W power supply?
The product lists 225W output and the specification identifies this exact model as NDC250PS4.5. Do not infer output power from the “250” in the model code.
Does it need reduced load at high temperature?
Yes. The specified operating range is −40 to +80°C, with derating required from 50°C. See the original PDF for the installation and derating conditions.
Which protection functions are included?
The specification lists input undervoltage, output overcurrent, overvoltage, short-circuit and over-temperature protection.
Product Photo and Specification
Download Specification:
South Creative NDC250PS4.5 LED Display Power Supply Specification
