12V 4.15A AC-DC Power Supply, 2.1 x 5.5mm Center Positive | SW-1241A5
Regulated 12V 4.15A AC-DC Switching Power Supply | Part SW-1241A5
Part SW-1241A5 is a regulated switching desktop power supply that converts a wide 100–240V AC input range to a fixed 12V DC output at up to 4.15A (4150mA). Its 2.1mm x 5.5mm center-positive barrel plug connects to compatible DC electronics. The wide voltage range refers to the AC input, not an adjustable DC output.
Technical Specifications
- Part: SW-1241A5
- Input Voltage: 100–240V AC, 50–60Hz
- Input Current: 1.2A, as marked on the label
- Output Voltage: 12V DC, fixed
- Output Current: 4.15A (4150mA) maximum
- Connector: 2.1mm x 5.5mm barrel plug
- Polarity: Center positive (+)
- Supply Type: Regulated switching AC-DC power supply
- Form Factor: Desktop
Compatibility & Setup
Before selecting Part SW-1241A5 as a replacement supply, compare your device label, original adapter, or manufacturer’s specifications. The equipment must require 12V DC, use a matching 2.1mm x 5.5mm center-positive connection, and have current requirements, including startup demand, within the supply’s 4.15A rating. Confirm that all connectors and wiring are suitable for the intended current.
Device category or brand alone does not establish compatibility. Do not substitute this supply for equipment requiring AC output, a different DC voltage, another connector size, center-negative polarity, or more than 4.15A.
Frequently Asked Questions
Is the output rated at 4150mA or 4160mA?
The product label specifies 4.15A, equivalent to 4150mA. This listing uses that label rating.
Does the wide voltage range mean the DC output is adjustable?
No. The supply accepts 100–240V AC at 50–60Hz and provides fixed 12V DC output. It is not an adjustable bench supply or selectable-voltage adapter.
Can I use this with a device that draws less than 4.15A?
A compatible device draws the current it needs. Lower-current equipment may be suitable if its 12V DC requirement, connector, polarity, and other requirements match. Ensure startup demand is also within the supply’s rating. Current capacity alone does not establish compatibility.
What connector and polarity does it use?
Part SW-1241A5 uses a 2.1mm x 5.5mm center-positive barrel plug. Verify the connector dimensions and polarity against your equipment before connecting.
Is this a 12V AC or 12V DC power supply?
It accepts AC input and supplies regulated 12V DC output. It does not provide 12V AC output.
IMPORTANT: Verify the required DC voltage, current, connector dimensions, and polarity before connecting. Incorrect voltage, polarity, or an unsuitable connection can damage equipment. Do not exceed the supply’s 4.15A maximum or the ratings of the device, connectors, or wiring.
