---
product_id: 594809929
title: "DC Power Supply Variable (30V 5A), Mini Bench Adjustable Switching Regulated Power Supply with Upgraded Encoder, High Precision 3-Digits LED Display Lab Power Supplies"
brand: "ruzizao"
price: "671.78 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Ruzizao"
url: https://www.desertcart.tn/products/594809929-dc-power-supply-variable-30v-5a-mini-bench-adjustable-switching
store_origin: TN
region: Tunisia
---

# 30V max voltage 0.1V & 0.01A precision 5A max current output DC Power Supply Variable (30V 5A), Mini Bench Adjustable Switching Regulated Power Supply with Upgraded Encoder, High Precision 3-Digits LED Display Lab Power Supplies

**Brand:** ruzizao
**Price:** 671.78 DT
**Availability:** ✅ In Stock

## Summary

> ⚡ Power precision meets sleek compactness — never settle for less on your bench!

## Quick Answers

- **What is this?** DC Power Supply Variable (30V 5A), Mini Bench Adjustable Switching Regulated Power Supply with Upgraded Encoder, High Precision 3-Digits LED Display Lab Power Supplies by ruzizao
- **How much does it cost?** 671.78 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/594809929-dc-power-supply-variable-30v-5a-mini-bench-adjustable-switching)

## Best For

- ruzizao enthusiasts

## Why This Product

- Trusted ruzizao brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready for Any Lab:** Versatile for electronics DIY, repair, electroplating, and more — your all-in-one power solution.
- • **Compact Powerhouse:** Weighs just 1.54 lbs, saving precious bench space without sacrificing performance.
- • **Built-In Safety Shield:** FCC/CE certified with multi-layer protections including over-voltage, over-current, and thermal safeguards.
- • **Crystal-Clear HD Display:** 3-digit backlit LED ensures you never miss a detail, even in dim lighting.
- • **Pinpoint Precision Control:** Set voltage & current digit-by-digit with upgraded encoder knob for flawless accuracy.

## Overview

The RUZIZAO DC Power Supply delivers up to 30V and 5A with ultra-precise 0.1V/0.01A resolution via an innovative encoder knob and bright 3-digit LED display. Compact and lightweight at just 1.54 lbs, it fits seamlessly into any workspace. Certified for safety with FCC/CE approval and equipped with multiple protection features, it’s engineered for reliability across diverse professional and DIY applications.

## Description

Product Description HD 3-digit Display The HD 3-digit LED display allows the screen to be seen clearly even in poor lighting conditions. All the working status of the lab power supply is shown in the indicator on the left side of the screen. Encoder Adjustment Knob Unlike normal knobs, the precision encoder adjustment buttons can help you set the desired value more accurately by simply pressing the knob to switch each digit and then turning the knob to set each digit in the range of 0-9. High Precision Output The bench power supply output is stable and accurate, with a voltage readback resolution of 0.1V and a current readback resolution of 0.01A.

Review: Simple and cheap - This is a great little power supply for novice user. If your just learning or experimenting with electronics its worth the money. A little noisy with the rear fan but nothing to right home about.
Review: Nice little power supply that looks well built - For the price it was worth the gamble to go for a completely unknown brand. When I got it it looked decent enough. It works fine. The fan being 50mm is average loud, definitely not silent. I opened the cover and I was pleasantly surprised by the very good build quality. You set the voltage and current limit digits by clicking and turning where a click goes to the next digit. I am very impressed so far. Would love to see higher voltage versions when these get cheaper. All I am missing is a ground connection. By the way, the cover is grounded, less that 0.1 ohm. If you are thinking of one, it's a yes from me.

## Features

- Upgraded High-Precision Encoder Knob: Just "set" Voltage and Current instead of "adjust". You can press the Voltage and Current encoder knob to select the Digit you want to adjust, then rotate the knob to set the value from 0-9. Each Digit can be set easily by the accurate encoder knob. The encoder switch replaces the potentiometer switch, making your work easier, more accurate and efficient
- Precise 3-Digit LED Display: The RUZIZAO DC bench power supply has a resolution of 0.1V and 0.01A, and you can easily adjust it in the range of 0-30V and 0-5A. The 3-digit back-lit LED display provides more accurate and clearly visible readings for the voltage and current value, even in conditions of low voltage
- Small and Diverse Applications: Worried about the bulky power supply? This compact and sophisticated DC power supply weighs much less than a laptop at just 1.54 pounds, saving more space on your workbench. And you can use it in various scenarios such as laboratory, repair, electrolysis, burn-in test, electroplating, brush plating, electronic DIY, etc
- Safe and Reliable to Use: Safety is our priority. The DC bench power supply is FCC/CE certified. When the DC power supply is powered on, the built-in fan will start working in order to effectively dissipate the heat to extend the service life, low noise and low ripple. The bench power supply is durable and compact. Productive work since the power supply comes multiple protection of Over-voltage, over-current, over-power, over-temperature, short-circuit powerful protection function
- Packaging and After-Sales: 1 x DC Power Supply, 1 x Power Cord, 1x Output Load Cord, 1 x User Manual. The variable dc power supply size is 16.5*10.3*8.1cm, Weight is 0.7kg. You can easily take the DC power supply to work. We provide a 12-month repair policy. If you have any technical questions about our power supply, please do not hesitate to contact us
- Please note: This bench power supply variable input voltage range is 100~240V and can be used with 110V and 230V conditions

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CNRLNBGQ |
| Amperage | 5 Amps |
| Best Sellers Rank | 10,220 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 28 in Industrial Power Supply |
| Brand Name | RUZIZAO |
| Colour | Red LED |
| Connector Types | DC Plug, DC Jack |
| Country of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (109) |
| Enclosure Material | Metal |
| Form Factor | Compact Bench Power Supply |
| Input Voltage | 240 Volts |
| Manufacturer | RUZIZAO |
| Manufacturer Part Number | R-SPS |
| Maximum Power | 150 Watts |
| Model Number | 30V 5A-3 |
| Output Current | 5 Amps |
| Output Voltage | 30 Volts |
| Output Wattage | 150 Watts |
| Specification Met | CE, FCC |
| UPC | 700721652150 |

## Product Details

- **Brand:** RUZIZAO
- **Colour:** Red LED
- **Connector type:** DC Plug, DC Jack
- **Input voltage:** 240 Volts
- **Material:** Metal

## Images

![DC Power Supply Variable (30V 5A), Mini Bench Adjustable Switching Regulated Power Supply with Upgraded Encoder, High Precision 3-Digits LED Display Lab Power Supplies - Image 1](https://m.media-amazon.com/images/I/71ubH994vFL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simple and cheap
*by S***N on 24 February 2026*

This is a great little power supply for novice user. If your just learning or experimenting with electronics its worth the money. A little noisy with the rear fan but nothing to right home about.

### ⭐⭐⭐⭐⭐ Nice little power supply that looks well built
*by M***E on 29 March 2024*

For the price it was worth the gamble to go for a completely unknown brand. When I got it it looked decent enough. It works fine. The fan being 50mm is average loud, definitely not silent. I opened the cover and I was pleasantly surprised by the very good build quality. You set the voltage and current limit digits by clicking and turning where a click goes to the next digit. I am very impressed so far. Would love to see higher voltage versions when these get cheaper. All I am missing is a ground connection. By the way, the cover is grounded, less that 0.1 ohm. If you are thinking of one, it's a yes from me.

### ⭐⭐⭐⭐ Good little PSU for home use.
*by P***C on 24 October 2025*

I bought this little power supply for home and hobby use. The unit functions well, seems reliable, and the output voltage (which I have checked) is both stable and acceptably accurate. It is not to be compared with laboratory standard instruments but they cost much much more. The display is clear and adjustments are simple and logical. In use, there is a certain amount of noise from the internal cooling fan and this fan is not regulated - that's to say, it runs all the time, regardless of the actual temperature inside the unit. Conclusion: good for the price point, recommended.

## Frequently Bought Together

- RUZIZAO DC Power Supply Variable (30V 5A), Mini Bench Power Supply with Upgraded Encoder, Adjustable Switching Regulated Power Supply, High Precision 3-Digits LED Display Lab Power Supply
- Multimeter Test Leads, 2PCS Alligator Clips Test Leads, Crocodile Clips Electrical, Electrical Insulated Wire for Multimeter Electrical Testing, Multimeter Leads 15A 1000V,Red Black

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-03-24*