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48W 12V 4A AC-DC Power Adapter – Desktop Power Supply for Industrial and Electronic Devices

The XJK 48W 12V 4A Power Adapter is an AC-DC desktop power supply designed to provide stable and reliable 12V DC power for a wide range of electronic and industrial applications.

With a rated output of 12V and 4A, this 48W power adapter is suitable for equipment requiring a consistent DC power source. Its external desktop design allows flexible installation and convenient integration into different equipment configurations.

As an experienced power supply manufacturer, XJK supports OEM and ODM customization to meet specific equipment requirements. Customization options include DC output connectors, cable length, AC input plugs, enclosure design, and electrical specifications.

Whether you are sourcing a standard 12V power adapter or developing a customized AC-DC power solution for your equipment, XJK can support your project from product development and sampling to mass production.

Manufacturing & Quality Assurance

XJK follows established manufacturing and quality control procedures to support reliable power adapter production. Learn more about our power supply quality and certifications.

The XJK 48W 12V 4A AC-DC Power Adapter provides stable 12V DC output for industrial equipment, electronic devices, and embedded systems. Designed for reliable continuous operation, this desktop power supply supports OEM/ODM customization, including output connectors, cable length, housing design, and input plug options to meet different equipment requirements.

Technical Specifications

Parameter	Specification
Product Type	AC-DC Power Adapter
Rated Output Power	48W
Input Voltage	100–240V AC
Input Frequency	50/60Hz
Rated Output Voltage	12V DC
Rated Output Current	4A
Output Voltage Tolerance	±5%
Line Regulation	±1%
Load Regulation	±5%
Ripple & Noise	≤120mVp-p
Efficiency	≥88%
No-Load Power Consumption	≤0.21W
Operating Temperature	0°C to +40°C
Storage Temperature	-20°C to +80°C
Over-Voltage Protection	Supported
Over-Current Protection	Supported
Short-Circuit Protection	Supported
Cooling Method	Natural Convection
AC Input Connection	AC Plug or Customized Input Cable
DC Output Connection	DC Plug or Customized Cable
Application	Industrial and Electronic Devices
OEM/ODM Customization	Available upon request

Product Features & Benefits

Protection Functions

Available protection features help safeguard connected equipment against electrical faults.

Stable Power Output

Consistent power delivery designed to meet your equipment’s voltage and current requirements.

Flexible Connections

Input plugs, output connectors and cable configurations can be tailored to project requirements.

EM/ODM Support

Customization support for electrical specifications, connectors, cables, labeling and packaging.

Typical Applications

Safety & Compliance

Safety and regulatory compliance are essential for industrial and medical equipment. Our 120W power adapter platform is designed to support major international standards.

Key compliance features include:

• DOE Level VI energy efficiency
• Low standby power consumption
• EMC and electrical safety compliance
• Support for ETL, CE and FCC certifications
• Medical-grade design options available upon request

Certification documents and test reports can be provided according to specific project requirements.

Need a certified power adapter for your project?

Our team can provide ETL or medical-grade compliant solutions.

Request Certification Details

OEM / ODM SERVICES

OEM/ODM Customization for Your Power Supply Projects

XJK Power supports OEM and ODM customization for equipment manufacturers, helping adapt electrical specifications, connections and product configurations to project requirements.

Electrical Configuration

Output voltage, current and power specifications.

Connectors & Cables

DC connectors, cable lengths and AC plug options.

Branding & Packaging

Product labels, logos and packaging options.

Customization options are subject to engineering evaluation and project requirements.

Need a Customized Power Adapter?

Industrial Power Supply Solutions

An industrial power supply is a device that converts electrical energy into a stable and regulated output to power industrial equipment.

Explore Solution →

Door Access Control Systems

a multi-door access control application, with a focus on load budgeting, power distribution, and system integration.

Explore Case →

Frequently Asked Questions

Q1: What is the output specification of this 48W power adapter?

This AC-DC power adapter provides a rated output of 12V DC and 4A, delivering a total rated power of 48W.

Q2: Can this 12V 4A power adapter be customized for OEM projects?

Yes. XJK supports OEM/ODM customization, including DC output connectors, cable lengths, AC input plugs, enclosure design, and labeling according to project requirements.

Q3: Is this 48W power adapter suitable for industrial equipment?

It can be used with compatible industrial controllers, electronic control systems, and other equipment requiring a 12V DC power supply with a maximum rated output of 4A. Electrical compatibility should be confirmed before selection.

Q4: Can XJK customize the DC connector and cable length?

Yes. Different DC connector types, cable lengths, and output cable configurations can be discussed and customized based on customer requirements.

Q5: Does XJK support samples and bulk production for this 12V 4A adapter?

Yes. XJK supports sample development, engineering evaluation, and mass production for OEM/ODM customers. Contact our team to discuss your electrical specifications and project requirements.

Need Help Selecting the Right Power Adapter?

Our engineering team can help you choose the correct voltage, connector, and certification for your projects.

Request Technical Support

MANUFACTURING & QUALITY

Reliable Manufacturing. Consistent Quality.

XJK Power combines established manufacturing processes with electrical testing and quality inspections to support consistent production for OEM and ODM power supply projects.

Controlled Manufacturing

Dedicated production lines and defined manufacturing processes support consistent assembly and repeat production.

Electrical Testing

Electrical performance checks help verify output parameters against applicable product specifications.

Aging & Reliability Checks

Applicable aging and burn-in tests help evaluate product operation and stability.

Safety & Compliance

Product-specific testing and documentation support applicable safety and regulatory requirements.

Customization options are subject to engineering evaluation and project requirements.

Learn About Our Quality System

Related Power Adapter Models

Explore our range of reliable power adapters designed for industrial, commercial, and networking applications. Multiple output voltages and connector options are available to meet different device requirements.

MODEL

POWER

VOLTAGE

XJK144W-2406000

144W

XJK144W-2406000

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XJK96W-2404000

96W

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XJK96W-2404000

96W

24V

XJKAD48W120-5525

48W

12V

XJKAD48W120-5525

48W

12V

XJK72W-2403000

72W

24V

XJK72W-2403000

72W

24V