---
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: "$156.43"
currency: USD
in_stock: true
reviews_count: 13
category: "Ruzizao"
url: https://www.desertcart.us/products/594809929-dc-power-supply-variable-30v-5a-mini-bench-adjustable-switching
store_origin: US
region: United States of America
---

# 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:** $156.43
**Availability:** ✅ In Stock

## Summary

> ⚡ Power precision meets sleek compactness — own the bench, own the moment!

## 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?** $156.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/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

- • **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 and whisper-quiet cooling fan for reliable, worry-free operation.
- • **Crystal-Clear Readings:** Backlit 3-digit LED display ensures you never miss a detail, even in dim environments.
- • **Ready for Any Challenge:** Versatile for lab, repair, DIY, electroplating & more — your all-in-one power solution.
- • **Pinpoint Precision Control:** Set voltage & current digit-by-digit with upgraded encoder knob for flawless accuracy.

## Overview

The RUZIZAO DC Power Supply Variable (30V 5A) is a compact, high-precision bench power supply featuring a unique digit-select encoder knob, a clear 3-digit backlit LED display, and robust safety certifications (FCC/CE). Weighing only 1.54 lbs, it offers versatile applications from electronics DIY to professional lab use, with advanced protections and quiet cooling to ensure durability and reliability.

## Description

From the brand RUZIZAO Your DC Power Supply specialist. When did we start? We are a professional DC regulated power supply manufacturer established in 2012 What makes our products unique? We have launched the basic series: SPS, SPS-C, SPS-W; upgraded series: SPS-C-S, SPS-S; high-power series: 600W, 900W,1800W. In the future, we will also launch more advanced DC power supply. Product features include high precision, storage memory, encoder knob, output switch, programmable, OCP&OVP and other new designs Is the quality of our goods superior? Our products are equipped with better materials and upgraded structure which makes it higher reliable and accurate When did we start? We are a professional DC regulated power supply manufacturer established in 2012 What makes our products unique? We have launched the basic series: SPS, SPS-C, SPS-W; upgraded series: SPS-C-S, SPS-S; high-power series: 600W, 900W,1800W. In the future, we will also launch more advanced DC power supply. Product features include high precision, storage memory, encoder knob, output switch, programmable, OCP&OVP and other new designs Is the quality of our goods superior? Our products are equipped with better materials and upgraded structure which makes it higher reliable and accurate RUZIZAO Bench Power Supply

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.
Review: A great item at a great price - A very good power supply

## 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 |
| Batteries Required? | No |
| Best Sellers Rank | 8,124 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 23 in Industrial Power Supply |
| Colour | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (194) |
| Date First Available | 7 Nov. 2020 |
| Item Package Quantity | 1 |
| Item Weight | 1.11 kg |
| Item model number | 30V 5A-3 |
| Manufacturer | RUZIZAO |
| Material | Metal |
| Maximum power | 150 Watts |
| Package Dimensions | 21.9 x 18.4 x 10.9 cm; 1.11 kg |
| Part number | R-SPS |
| Specification met | CE, FCC |
| Style | 30V 5A |

## Product Details

- **Brand:** RUZIZAO
- **Colour:** Black
- **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 **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ A great item at a great price
*by C***N on 1 December 2025*

A very good power supply

### ⭐⭐⭐⭐ 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 United States of America*
*Store origin: US*
*Last updated: 2026-03-17*