4.5V power supply for LED screens
The Rong-Electric MA200PC4.5 is a 4.5V, 40A switch-mode power supply (SMPS) for LED display modules. Check its output voltage and 190 × 81.5 × 30mm dimensions when matching the unit to an existing cabinet.
Technical specifications
| Parameter | Specification |
|---|---|
| Output voltage | 4.5V DC |
| Output current | 40A |
| Input voltage range | 90–264VAC |
| Efficiency | Up to 90% at 230VAC input |
| Ripple and noise | ≤150mV |
| Operating temperature | −30 to +60°C |
| Dimensions | 190 × 81.5 × 30mm |
| Cooling | Self-cooling |
| Listed protection functions | Input overvoltage, overload and short-circuit protection |
Installation and documentation checks
Match the module voltage and load, confirm terminal positions, and allow clearance for cooling. The efficiency figure is tied to 230VAC input and should not be treated as a guaranteed value under every load condition.
The original listing references CE, UL, GB4943, EN60950, GB9254 and EN55022A. If certification is a project requirement, obtain documentation for the exact supplied model and revision before relying on those references.
Product photos
Frequently asked questions
What is the output rating of MA200PC4.5?
The listed output is 4.5V DC at 40A. Confirm that the LED module is designed for this voltage.
Does it support 110V and 230V mains?
Both are within the listed 90–264VAC input range.
Is 90% efficiency guaranteed at all loads?
The listing specifies up to 90% at 230VAC input. It does not establish 90% efficiency at every operating point.
What size is the enclosure?
The listed dimensions are 190 × 81.5 × 30mm. Check mounting holes and terminal clearance as well as overall size.
What temperature and ripple specifications are listed?
The operating temperature is −30 to +60°C, and ripple and noise are listed as ≤150mV. Check the supplied documentation for test and load conditions.
