Rong-Electric MB300B5A 5V 60A LED Power Supply
$ 13.50
The Rong-Electric MB300B5A supplies 5 V DC at up to 60 A and uses fan cooling. Its 90–130 V AC or 190–264 V AC input band is selected by a switch; output load must be reduced above 50°C.
999 in stock
MB300B5A fan-cooled power supply for LED displays
The Rong-Electric MB300B5A is a 5 V DC LED display supply with a 0–60 A output range and a 212 × 81.5 × 30.7 mm enclosure. The specification distinguishes average output current from the 66 A peak pulse limit.
Check the input selector and cabinet temperature before selecting the load. This model uses two switch-selected AC input bands, not one continuous 90–264 V band. The parameter table follows the V1.1 PDF, which also confirms that the output is DC and adds the temperature-derating conditions omitted from the original summary.
Technical specifications
| Parameter | Specification |
|---|---|
| Model | Rong-Electric MB300B5A |
| Nominal DC output | 5.0 V; 0–60 A |
| Output-voltage range | 4.9–5.1 V DC |
| Peak pulse current | 66 A; average current must remain ≤60 A |
| Rated AC input | 100–120 V AC or 200–240 V AC |
| Operating AC ranges | 90–130 V AC or 190–264 V AC; selected by switch |
| Input frequency | 47–63 Hz |
| Input load curve | 100% within each of the two specified input bands; no operating band is shown between 130 V and 190 V |
| Efficiency | ≥85% at 220 V AC, full load and 25°C |
| Maximum input / inrush current | ≤6.5 A / ≤80 A at 220 V AC |
| Voltage regulation | ±1% |
| Load / overall regulation | ±2% / ±2% |
| Ripple and noise | ≤150 mVp-p at 25°C and full load; 20 MHz bandwidth with 0.10 µF ceramic and 10 µF electrolytic capacitors |
| Turn-on delay / rise time | ≤2,500 ms / ≤100 ms |
| Hold-up time | ≥10 ms at 220 V AC |
| Capacitive startup load | ≤15,000 µF at full load |
| Overcurrent protection | 66–90 A; hiccup mode with automatic recovery |
| Short-circuit protection | Supported |
| Working temperature and derating | −30°C to +70°C; 100% through 50°C, 75% at 60°C and 50% at 70°C |
| Working humidity / cooling | 10–90%, non-condensing / fan cooling |
| Altitude | −60 to 5,000 m; above 3,000 m, reduce ambient-temperature allowance by 1°C per 200 m |
| Dimensions / unit weight | 212 × 81.5 × 30.7 mm, ±1.0 mm; approximately 530 g |
| Input CON1 pin order | N, N, L, L, earth |
| Output CON2 pin order | V−, V−, V−, V+, V+, V+ |
| Connector pitch / model rating | 9.5 mm; 300 V, 25 A |
| Source | MB300B5A specification V1.1, 2023-07-04 |
Product images and specification download
Rong-Electric MB300B5A LED Power Supply specification
Frequently asked questions
Is the MB300B5A input voltage selected automatically?
The PDF explicitly says the 90–130 V AC and 190–264 V AC ranges are selected by a switch. Confirm the correct switch position for the supply before powering the unit; do not treat it as an automatic 90–264 V input.
Can it operate from 150 V AC?
150 V AC lies between the two documented operating bands. Neither the input table nor its load graph establishes operation in that gap.
Can MB300B5A deliver 60 A at 70°C?
The temperature curve reduces load to 50% at 70°C, with 75% at 60°C and 100% through 50°C. The 60 A rating is therefore not an unrestricted high-temperature output.
Is the 66 A value a continuous output rating?
No. 66 A is the listed peak pulse current, while average current must remain at or below 60 A. The separate overcurrent-protection threshold is 66–90 A.
Does MB300B5A use fan cooling?
Yes. Both the feature list and environmental table specify fan cooling. Keep the cabinet arrangement compatible with airflow and the specified ambient-temperature limits.
| Weight | 0.5 kg |
|---|
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