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AC-DC switching power supply, 9VDC 5000mA, with 2.1x5.5mm center positive connector, by PHC Enterprise, Inc.
Close-up detail of 2.1mm x 5.5mm center-positive barrel connector plug for SW-0941A 9V DC 5A power supply.
AC-DC switching power supply by PHC Enterprise, Inc., 9VDC 5000mA, with 2.1 x 5.5mm center positive connector.
AC-DC switching power supply by PHC Enterprise, Inc., 9VDC 5000mA, with 2.1 x 5.5mm center positive connector.
AC-DC switching power supply, 9VDC 5000mA, with 2.1x5.5mm center positive connector, by PHC Enterprise, Inc.
Close-up detail of 2.1mm x 5.5mm center-positive barrel connector plug for SW-0941A 9V DC 5A power supply.
AC-DC switching power supply by PHC Enterprise, Inc., 9VDC 5000mA, with 2.1 x 5.5mm center positive connector.
AC-DC switching power supply by PHC Enterprise, Inc., 9VDC 5000mA, with 2.1 x 5.5mm center positive connector.

9V 5A AC-DC Power Supply, 2.1 x 5.5mm Center Positive | SW-0941A

by PHC Enterprise, Inc.
$36.00 - $36.00
$36.00
$36.00 - $36.00
$36.00

Regulated 9V DC 5A AC-DC Switching Power Supply | Part SW-0941A

Part SW-0941A is a high-output desktop switching power supply providing a regulated 9V DC output at up to 5000mA (5A) continuous current with a 100–240V AC universal input. It features a standard 2.1mm x 5.5mm center-positive barrel connector plug. Use the specifications below to evaluate electrical requirements for replacement or high-volume equipment procurement.

Technical Specifications

  • Part: SW-0941A
  • Input Voltage: 100–240V AC, 50/60Hz (Universal Input)
  • Output Voltage: 9V DC (Regulated)
  • Maximum Current Output: 5000mA (5A / 45W)
  • Connector Dimensions: 2.1mm (Inner Diameter) x 5.5mm (Outer Diameter)
  • Connector Polarity: Center Positive (+) / Outer Negative (-)
  • Form Factor: Desktop Power Adapter
  • Type: AC-to-DC Regulated Switching Power Supply

Equipment Selection & Institutional Purchasing

Purchasing power supplies for a school, lab, research facility, or industrial application? Compare each device’s required AC-versus-DC output voltage, maximum current draw, connector dimensions, and pin polarity before placing volume orders. This listing provides technical and procurement teams with a clear specification baseline for equipment evaluation.

Bulk & Institutional Purchasing: Quantity pricing, custom invoicing, and corporate or institutional purchase orders (POs) are accepted. For volume quotes or formal PDF spec sheet requests, contact our sales team at sales@acdcpowershack.com.

Compatibility Check: Use only with devices requiring 9V DC power, a 2.1mm x 5.5mm center-positive barrel jack, and a maximum continuous current draw of 5A (5000mA) or less. Verify equipment labels and original power supply specs prior to ordering. Do not use as a substitute for 9V AC or center-negative power supplies.

Frequently Asked Questions

Is this a 9V AC or 9V DC supply?
This supply outputs regulated 9V DC. It cannot be used as a replacement for equipment requiring 9V AC power.

What are the connector dimensions and polarity?
The output barrel plug measures 2.1mm inner diameter by 5.5mm outer diameter with center-positive (+) polarity. Confirm your device's jack dimensions and polarity before ordering.

Can we order this item in bulk for institutional accounts?
Yes. Ensure all target equipment requires 9V DC, draws 5A or less, and uses a 2.1mm x 5.5mm center-positive connector. Contact our team directly for volume purchasing arrangements or tax-exempt procurement processing.

Let customers speak for us

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Had to cut the plug end off to replace a hard wired plug from an old Halloween decoration but it worked and saved a 25 year old holiday decoration.

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I bought the Variac/isolation transformer combo. FOR STARTERS: NOBODY ELSE MAKES THIS COMBO with a genuine isolation transformer. And that fact that it's $200 out the door is insanity. My only advice with the unit would be to double check the voltage display against a multimeter; I find my display to be about 5V lower than the actual output and adjusted accordingly.

This item was packaged more securely than a nuclear warhead. Seriously, the packing job is a masterclass in transportation and logistical safeguards.

In short--I rarely leave reviews. I felt I HAD to for this product. If you're not sure because it's a newer item/company, don't worry. They are LEGIT and they are INCREDIBLE.
One more side note--customer service response is insanely fast also. I emailed a question on a SUNDAY EVENING and got an answer.

GREAT, domestically-owned small business I will support again.

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