NDC500PS4.5 Power Supply for LED Displays
The South Creative NDC500PS4.5 is a 4.5V switching power supply for LED display cabinets. Its output rating depends on AC input: the model-specific V1.1 specification lists 4.5V/80A at 100–180VAC and 4.5V/100A at 181–240VAC. Use these ratings when selecting a replacement rather than treating the NDC500 series name as a constant 500W output rating.
Technical Specifications
| Parameter | Specification |
|---|---|
| Specification revision | V1.1, dated 2023-11-10 |
| Nominal DC output | 4.5V |
| Output voltage range | 4.4–4.6V DC |
| Output at 100–180VAC | 4.5V / 80A |
| Output at 181–240VAC | 4.5V / 100A |
| Input voltage range | 90–264VAC; rated input 100–240VAC |
| Input frequency | 47–63Hz; typical 50/60Hz |
| Power factor | ≥0.95 at 220VAC, full load |
| Ripple and noise | ≤300mV peak-to-peak under the specified test conditions |
| Efficiency | Up to 90% in the specification overview |
| Cooling | Natural air cooling |
| Operating temperature | −40 to +80°C; derating required from 50°C |
| Storage temperature | −45 to +85°C |
| Operating relative humidity | 10–90%, non-condensing |
| Dimensions | 235 × 60 × 30 mm |
| Weight | 686g |
Input and Temperature Derating
The 100A output is not available across the entire input range. Check the input-voltage and temperature derating curves in the PDF before sizing the LED load. Those curves were measured with the enclosure attached closely to a 320 × 320 × 22 mm heat-dissipation plate; the actual cabinet needs suitable thermal design.
The specification identifies input undervoltage, output overcurrent and output short-circuit protection. For a replacement, compare output voltage, current demand, mounting dimensions and terminal positions. Contact us with a photograph of the existing label if the model or revision is unclear.
Frequently Asked Questions
What is the output voltage of the NDC500PS4.5?
Its nominal output is 4.5V DC. Specification V1.1 lists an output voltage range of 4.4–4.6V DC.
Can it deliver 100A from a 110V AC supply?
The specification cover lists 80A for 100–180VAC input. The 100A rating applies to 181–240VAC input, subject to temperature and installation conditions.
Is NDC500PS4.5 a constant 500W output supply?
Do not select it by the series number alone. The model-specific document gives voltage and current ratings of 4.5V/80A or 4.5V/100A depending on the AC input.
Can it operate at 80°C at full load?
No full-load claim applies at that temperature. The specification requires temperature derating from 50°C and provides separate curves for different input voltages.
Where can I check the wiring and derating requirements?
Use the original NDC500PS4.5 specification PDF linked below. Check the exact model and revision against the unit label before installation.
Product Photo and Specification PDF
Download Specification:
South Creative NDC500PS4.5 LED Display Power Supply Specification
