MAG-H500-220S48 | 500W 220VAC to 48VDC Isolated Waterproof AC-DC Power Supply Solution for Substations and Power Plants

In power systems, a large number of critical devices inside substations and power plants — such as high-voltage circuit breakers, relay protection devices, automation instruments, and control systems — rely on stable and reliable DC power. Because field environments often involve voltage fluctuations, strong electromagnetic interference, large temperature variations, and long-term continuous operation, ordinary power modules are usually unable to meet long-term stability requirements.

The MAG-H500-220S48, developed by Mingzinc Technology, is a 500W industrial-grade isolated waterproof AC-DC power module designed specifically for the power industry. It converts 176-264VAC input into a stable 48VDC output, providing safe, stable, and low-ripple DC power for power automation equipment and serving as a key component for ensuring grid stability.

1. Key Product Specifications 

Model: MAG-H500-220S48
Type: AC-DC Power Module / Industrial Power Supply

• Rated Power: 500W

• Input Voltage: 176-264VAC

• Output Voltage: 48VDC

• Output Current: 10.4A

• Output Type: Single Output

• Protection Rating: IP65

• Dimensions: 200 × 158 × 72 mm

• Wiring Method: Aviation connector output

Optional Configurations:

• Power range: 400-600W available

• Custom single-output options supported

2. Structural Advantages Designed for Power-System Environments

The MAG-H500-220S48 adopts a fully sealed aluminum alloy housing with cooling fins, providing:

• High-strength mechanical protection

• Efficient thermal conduction and heat dissipation

• Dust-proof and moisture-resistant sealing

The module supports natural air cooling, and additional heat sinks can be installed depending on cabinet space. It is suitable for:

• Substation control cabinets

• Power-plant automation equipment cabinets

• Outdoor electrical control boxes

3. Power-Industry Application Scenarios

This power module mainly functions as a core AC-to-DC control power supply in power systems.

1️⃣ Substation Power Supply

Provides stable 48V DC power for:

• High-voltage circuit breaker control systems

• Relay protection devices

• Automation monitoring systems

• Data acquisition terminals

2️⃣ Power-Plant Control Systems

Supplies stable DC power for:

• Automation instrumentation systems

• Control signal equipment

• Monitoring and communication devices

• Protection and alarm systems

3️⃣ Grid Automation & Remote Monitoring Equipment

Applicable to:

• Grid dispatching equipment

• Intelligent control terminals

• Remote communication modules

4. Core Technical Highlights

✅ Wide Input Voltage Range

Supports 176-264VAC input, allowing reliable operation under:

• Grid voltage fluctuations

• Cable voltage drops

• Startup voltage variations

Ensuring continuous and stable output.

✅ Inrush Current Suppression Circuit

An integrated inrush-current suppression design effectively reduces:

• Power-on surge impact

• Grid surge interference

Improving overall system safety.

✅ Wide-Band Noise Filtering

Built-in input filtering removes high-frequency grid interference and electrical noise, producing a more stable output voltage. Especially suitable for:

• Precision relay protection systems

• Control signal systems

✅ High Isolation Between Input and Output

The electrical isolation design provides high isolation voltage between input and output, helping to:

• Suppress surges and voltage spikes

• Block electromagnetic interference

• Prevent fault voltage transmission

Significantly improving downstream equipment safety.

✅ Low Ripple and Low Noise Output

Low output ripple ensures:

• Stable automation instrument measurements

• Reliable control signals

• Proper communication system operation

5. Complete Industrial-Grade Protection Functions

The MAG-H500-220S48 includes multiple built-in protection mechanisms:

• Input undervoltage protection

• Input overvoltage protection

• Over-temperature protection

• Output overcurrent protection

• Output short-circuit protection

These protections automatically safeguard both the power module and connected equipment during abnormal conditions.

6. Importance of IP65 Protection

Power-system equipment is often deployed in:

• Dust-heavy environments

• Humid equipment rooms

• Outdoor control cabinets

• High-temperature enclosed enclosures

The MAG-H500-220S48 uses a fully sealed structure with IP65 protection, effectively preventing:

• Moisture ingress

• Dust contamination

• Corrosive environmental damage

Greatly extending power-supply service life.

7. Compliance With International Safety Standards

The product complies with:

• UL1950 safety standard

• IEC950 safety regulations

Helping system manufacturers pass industry certification requirements more easily.

8. Mingzinc Technology Power Customization Capability

As a professional power-supply manufacturer, Guangdong Mingzinc Technology Co., Ltd. provides:

• Custom input voltage ranges

• Custom output voltage and current

• Custom housing dimensions and structures

• Multi-output design options

• Enhanced EMI design

• Full OEM / ODM services

Technical support is available from sample verification through mass production.

9. Get Product Documentation & Selection Support

If you are looking for a 500W 48V industrial waterproof AC-DC power module for:

• Substation control systems

• Power-plant automation equipment

• Grid monitoring systems

Please contact Mingxin engineers to obtain:

• Full datasheet

• Mechanical installation drawings

• Application wiring diagrams

• Customization recommendations

We will provide a professional power-supply solution tailored to your real application scenario.