MAISHENG MP3030D 30V 30A DC Power Supply

MAISHENG MP3030D 30V 30A DC Power Supply

SKU: PD-00130
  • Precise voltage and current control
  • Automatic switching between constant voltage and constant current modes
  • Comprehensive protection (OVP, OCP, OTP)
  • Intelligent temperature-controlled fan for noise reduction and extended lifespan
  • Durable and portable design with a carrying handle
  • High efficiency with energy-saving performance

€197,24

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RegionEstimated Delivery (Business Days)
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Eastern EU7–10
North America5–8
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Australia5–8
Africa5–15

 

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Hello, fellow geeks!

I’m an embedded systems engineer with a degree in IoT Engineering, and I’ve been deeply involved in AIoT product development for years. I’ve participated in several B2B projects from the ground up — covering open-source hardware, system architecture, hardware selection, and solution implementation.

Through this journey, I’ve come across all kinds of AIoT products.
Some are smart, efficient, and elegantly designed; others are overcomplicated, packed with features that don’t solve real problems.
Over time, I’ve started focusing on one simple but important question:

Does this product truly solve the user’s core need?
Not just whether it’s ‘cool’ or uses the latest tech.

I firmly believe that great products don’t have to be complex or expensive — they just need to solve problems clearly and effectively, at a reasonable cost.

That’s why I created this site:
A space where engineers can connect, share, and learn from each other.

Here, I share great products and smart solutions I’ve encountered during projects — and try to explain why they’re good.
This isn’t about marketing. It’s about real experience, honest judgment, and technical clarity.

This platform is called sharingwin, because I believe in shared success.

You’ll find high-value, practical tools and products here — to help you save time on selection, avoid unnecessary trial and error, and focus on what works.

As for me, I hope to use this space to connect with like-minded engineers, exchange ideas, and — to be honest — maybe earn a little on the side too. That’s part of the fun. 😄

 

To all the makers and creators who’ve supported me along the way — thank you.
Due to some heavy personal projects recently, I haven’t been able to update or engage as frequently as I’d like — and for that, I apologize.
Moving forward, I’ll continue to optimize product content and be more active in sharing useful insights.

Your trust and support mean everything.
You’re the reason I believe this platform matters.

 

If you have any great products or ideas you think deserve more visibility, feel free to reach out.
I’m happy to help with sourcing, connect to the right supply chain, or feature it here so more engineers can see its value.

A single person has limited power —
but co-creation multiplies value.

If you believe in that too, let’s build something useful and meaningful — together.

The DC Regulated Power Supply features a sturdy, thickened steel chassis that is both aesthetically pleasing and durable, with a convenient carrying handle for easy transport. It offers precise voltage and current control with both coarse and fine adjustment options. The device automatically switches between constant voltage (CV) and constant current (CC) modes, allowing it to function as both a constant voltage source and a constant current source. The power supply is equipped with comprehensive protection features, including over-voltage protection (OVP), short circuit protection (OCP), and over-temperature protection (OTP). It incorporates PWM switch pre-regulation and MOS linear adjustment mode for high efficiency, energy-saving, and environmentally friendly performance. Additionally, the intelligent temperature-controlled fan adjusts speed according to the load, reducing noise and extending the fan’s life. The unit is designed with SMD technology for enhanced stability and performance and is capable of continuous 24-hour full-load operation.

Feature:

  • DC Regulated Power Supply
  • Stylish design, durable, and portable with a convenient carrying handle for easy transport
  • Coarse and fine adjustment for both voltage and current, ensuring precise output voltage control
  • Automatic switching between constant voltage (CV) and constant current (CC) modes, allowing it to function as both a constant voltage source and a constant current source
  • Milliampere display: Auto conversion for 0-999mA display, making it more convenient to read under light load conditions
  • PWM switch pre-regulation and MOS linear adjustment mode for high efficiency, energy-saving, and environmentally friendly performance
  • SMD (Surface-Mount Device) technology for enhanced stability and performance
  • Intelligent temperature-controlled fan that adjusts speed based on the load, effectively reducing noise and prolonging fan life

PRODUCT MODEL

Model Output Voltage Output Current Rated Power
MS-153D 0-15.0V 0-3.00A 45W
MS-153D 0-15.0V 0-5.00A 45W
MS-153D 0-15.0V 0-10.0A 45W
MS-153D 0-15.0V 0-15.0A 45W
MS-153D 0-15.0V 0-20.0A 45W
MS-153D 0-30.0V 0-2.00A 45W
MS-153D 0-30.0V 0-3.00A 45W
MS-153D 0-30.0V 0-5.00A 45W
MS-153D 0-30.0V 0-10.0A 45W
MS-153D 0-60.0V 0-1.00A 45W
MS-153D 0-60.0V 0-2.00A 45W
MS-153D 0-60.0V 0-3.00A 45W
MS-153D 0-60.0V 0-5.00A 45W
MS-153D 0-100V 0-1.00A 45W
MS-155D 0-15.0V 0-3.00A 75W
MS-155D 0-15.0V 0-5.00A 75W
MS-1510D 0-15.0V 0-10.0A 150W
MS-1515D 0-15.0V 0-15.0A 225W
MS-1520D 0-15.0V 0-20.0A 300W
MS-302D 0-30.0V 0-2.00A 60W
MS-303D 0-30.0V 0-3.00A 90W
MS-305D 0-30.0V 0-5.00A 150W
MS-3010D 0-30.0V 0-10.0A 300W
MS-601D 0-60.0V 0-1.00A 60W
MS-602D 0-60.0V 0-2.00A 120W
MS-603D 0-60.0V 0-3.00A 180W
MS-605D 0-60.0V 0-5.00A 300W
MS-1001D 0-100V 0-1.00A 100W
MS-1002D 0-100V 0-2.00A 200W
MS-1003D 0-100V 0-3.00A 300W
MS-1005D 0-100V 0-5.00A 500W
MS-1201D 0-120V 0-1.00A 120W
MS-1202D 0-120V 0-2.00A 240W

Applications:

  • Factory Product Testing and Aging: Ideal for testing and aging products such as DC motors, DC fans, car DVD players, car audio systems, resistors, capacitors, etc.
  • Battery Charging Industry: Perfect for battery charging applications, providing constant current charging followed by constant voltage trickle charging to prevent overcharging, protect batteries, and extend their lifespan.
  • Inverter Industry: The power supply overcomes the switching issues of linear power supplies and offers rapid response speeds, making it suitable for meeting instantaneous load variations.
  • LED Manufacturing Industry: Used for testing and aging of LED products.
  • Other DC Regulated Power Supply Applications: Suitable for any other scenarios requiring stable DC power sources.

Specification

Parameter Value
Input Voltage 220V/110V ±10% (Default: 220V, 110V available on request)
Input Frequency 50Hz/60Hz
Output Voltage Constant Voltage: 0 – Rated Value, Adjustable
Output Current Constant Current: 0 – Rated Value, Adjustable
Operating Mode Automatic switching between constant voltage (CV) and constant current (CC)
CV Indicator Green LED
CC Indicator Red LED
Display Three-digit display: Voltage (0.1V), Current (0.1A)
Display Resolution 0-999mA auto milliampere display (For output current ≤ 5A)
Display Accuracy CV <0.05% + 1mV, CC ≤0.05% + 1mA
Power Supply Effect <10mV RMS (CV), <20mA RMS (CC)
Load Effect CV <0.1% + 5mV, CC <0.1% + 10mA
Ripple & Noise CV <10mV RMS, CC <20mA RMS
Protection Features Over-voltage, over-temperature, short circuit, and current limiting protection
Cooling Method Intelligent temperature-controlled fan (forced air cooling)
Operating Environment -10°C to 40°C, Humidity < 80%
Storage Environment -20°C to 80°C, Humidity < 80%
Dimensions 260 x 125 x 160 mm (L x W x H)
Weight 2.5 kg

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