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Rectangular metal power supply unit, silver finish, screw terminals visible

Mean Well

Mean Well SP-320-5 5V 275W 55A Power Supply

SKU CH-1AVB-SM511

Delivers 5 V at 55 A with 275 W output in an 8.5 x 4.5 x 2.0 inch proprietary unit

  • TypeProprietary Power Supply
  • Delivers 275 W continuous power from a compact 8.5 x 4.5 x 2.0 in chassis
  • Accepts 85-264 Vac input at 47-63 Hz for worldwide mains compatibility
  • Maintains tight 0.5 % line regulation for stable output during voltage swings
  • Holds load regulation to 1.0 % ensuring consistent voltage under changing loads
  • Limits ripple and noise to 150 mV p-p for clean power to sensitive LED signage

Single-Rail 5 V Power Supply

The Mean Well SP-320-5 is a proprietary power supply that delivers 5 V at 55 A for a total of 275 W. It accepts a wide AC input range of 85 to 264 V at 47 to 63 Hz and fits into tight spaces at 8.5 x 4.5 x 2.0 inches.

Suitable for LED Signage and 5 V Industrial Loads

Installers who need a single 5 V rail with tight regulation — 0.5 percent line and 1.0 percent load — and low 150 mV ripple will find this unit matches the requirement. Builders who need multiple output voltages, standard ATX connectors or modular cabling should choose a different design.

5 V 55 A Output Decides Fit

The defining specification is the single 5 V rail rated at 55 A; the load must operate within that voltage and current envelope. Verify the device draws no more than 275 W and tolerates the stated ripple and regulation limits before committing.

Punti di forza

  • Delivers 275 W continuous power from a compact 8.5 x 4.5 x 2.0 in chassis
  • Accepts 85-264 Vac input at 47-63 Hz for worldwide mains compatibility
  • Maintains tight 0.5 % line regulation for stable output during voltage swings
  • Holds load regulation to 1.0 % ensuring consistent voltage under changing loads
  • Limits ripple and noise to 150 mV p-p for clean power to sensitive LED signage

Caratteristiche tecniche

TypeProprietary Power Supply

Domande su questo articolo

Is the SP-320-5 the only version available for this 5V output?

The SP-320-5 is the specific model listed, delivering 5V at 55A with a 275W rating. No alternative versions or capacities appear in the product data.

What does the 275W rating mean when the supply is installed in a sign cabinet?

It indicates the maximum continuous output power available at 5V, supporting up to 55A load with ripple and noise measured at 150mV p-p and load regulation of 1.0 percent.

How does the 85-264VAC input range affect installation in different regions?

The wide 85-264VAC input at 47-63Hz allows connection to most global mains voltages without manual switching, simplifying deployment across territories.

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