Rong-Electric MQ200PC4.5B 4.5V 40A LED Power Supply
$ 14.00
The Rong-Electric MQ200PC4.5B specification lists 4.5 V DC, 0–40 A and 180 W output. It accepts 90–264 V AC, with low-input-voltage derating, and includes current limiting and short-circuit protection.
5000 in stock
MQ200PC4.5B power supply for 4.5 V LED modules
The Rong-Electric MQ200PC4.5B is an LED display power supply with a documented 4.5 V DC output and 40 A maximum rated current. The model-specific PDF gives 180 W output; the power rating has not been inferred from the model name.
Check the module voltage and cabinet load against the operating conditions. At low AC input the published curve reduces the allowed load. The environmental table and temperature graph cover different upper temperatures, so the graph is not used to extend the table’s +50°C operating limit.
Technical specifications
| Parameter | Specification |
|---|---|
| Model | Rong-Electric MQ200PC4.5B |
| Rated output | 4.5 V DC; 0–40 A; 180 W |
| Rated AC input | 100–240 V AC |
| Operating input range / frequency | 90–264 V AC / 47–63 Hz |
| Input-voltage derating | Natural-cooling curve: 85% load at the plotted 90–130 V AC points; 100% from 140–264 V AC |
| Output-voltage range | 4.408–4.6 V DC, as printed in the specification |
| Overall regulation | ±2% |
| Voltage / load regulation | ±1% / ±1% |
| Ripple and noise | ≤150 mVp-p at full load; 20 MHz bandwidth with 0.10 µF ceramic and 10 µF electrolytic capacitors |
| Efficiency | ≥87.0% at 220 V AC, full load and room temperature |
| Power factor | ≥0.95 at full load |
| Maximum input / inrush current | ≤4 A / ≤60 A |
| Turn-on delay / rise time | ≤2,500 ms / ≤100 ms |
| Hold-up time | ≥10 ms at 220 V AC |
| Overcurrent protection | 44–60 A; hiccup mode with automatic recovery |
| Other protections | Input undervoltage and output short-circuit protection |
| Working temperature — source limitation | Environmental table: −30°C to +50°C; derating graph extends to +80°C and is not a confirmed extension of the operating rating |
| High-temperature aging condition | Additional heat-dissipation plate specified, at least 200 × 300 × 3 mm |
| Working humidity | 10–90%, non-condensing |
| Cooling / altitude | Natural cooling / 2,000 m |
| Dimensions / unit weight | 190 × 83 × 30 mm / 758 g |
| Input CON3 | N, N, L, L, earth, from left to right when facing the connector |
| Output COM1 | GND, GND, GND, +4.5 V, +4.5 V, +4.5 V, from left to right when facing the connector |
| Source | MQ200PC4.5B specification V1.0, 2019-11-20 |
Product images and specification download
MQ200PC4.5B Rong-Electric led Power Supply Specification
Frequently asked questions
Is the MQ200PC4.5B rated at 180 W or 200 W?
The model-matched specification explicitly lists 180 W, 4.5 V DC and 0–40 A. The characters “200” in the model number are not used here to infer a 200 W rating.
Can it operate on a 110 V AC supply?
110 V AC is within the documented 90–264 V AC input range. However, the natural-cooling input curve shows 85% load at the plotted 90–130 V AC points, so full output is not specified for that low-line range.
Can I use this as a 5 V power supply?
The specified nominal output is 4.5 V DC and the stated output-voltage range is 4.408–4.6 V DC. Do not treat it as a 5 V model; match the LED module voltage requirement before substitution.
What temperature limit should be used for installation?
The environmental table states −30°C to +50°C. The graph extends beyond this range, which creates a documentation discrepancy; do not assume those higher temperatures are approved operation. The document also requires an additional heat-dissipation plate for high-temperature aging.
What happens if the load draws more than 40 A?
The rated output-current range ends at 40 A. The PDF lists a 44–60 A overcurrent threshold with hiccup-mode automatic recovery; that protection threshold is not a continuous-load allowance.
| Weight | 0.7 kg |
|---|
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