Voltage & Current Protector Manufacturer
Our innovative voltage and current protectors will help you improve your electrical system. We offer smart, safe, and reliable solutions for homes, businesses, and industries.
- Overvoltage Protection – Auto cut-off when voltage is high
- Undervoltage Protection – Prevents low-voltage damage
- Overcurrent Protection – Protects from overload & overheating
- Color Display – Real-time voltage & current monitoring
- Long Lifespan – 100,000 mechanical operations
Digital Voltage & Current Protector
Smart protection against overvoltage, undervoltage, and overcurrent for safe and reliable power.
Model:PN2-VA2-1
- Visual text and Light signals
- LED Real-Time Display
- Multiple Settings Adjustable
Model:PN2-VA2-2
- Visual text and Light signals
- LED Real-Time Display
- Multiple Settings Adjustable
Model:PN6-VA
- Logo Display Function
- Phase Loss Protection
- All-Round Protection for Three-Phase Power
Model:STDVP-S
- Plug-and-Play Protection
- Multiple Plug Types
- Wide compatibility with various appliances
Soltree – Trusted Over & Under Voltage Protector Manufacturer
Work with a trusted Chinese factory for reliable over/under voltage protectors at factory prices — save up to 30%.
About Soltree
That’s Soltree: High Quality, Better Price
Soltree has been making low-voltage electrical products for more than 15 years. They are experts at making reliable over/under voltage protectors that keep equipment safe from unstable power circumstances. Our facility is 100,000 square meters and has more than 200 talented people, which means we can make a lot of products, keep prices low, and keep quality high. Every device is made to meet international standards, tested for strength, and comes with full OEM/ODM support.
Soltree – Reliable Over/Under Voltage Solutions
Global-Ready, Trusted by Professionals
Soltree makes high-tech gadgets that safeguard homes, businesses, and factories against overvoltage and undervoltage. We promise protection that makes equipment last longer and cuts down on downtime by using the latest technologies and thorough quality control. More than 50 nations trust our solutions and they are certified (CE, RoHS, ISO). We help partners all around the world make installation easier, improve safety, and construct smarter power distribution systems by making production more efficient and allowing for flexible customization.
Inside Soltree’s Workshop
Multiple fully automated lines with 100,000+ units/day capacity for stable, efficient output.
SMT Production Line
Assembly & Soldering
Automated Machinery
Quality Inspection
Final Assembly Line
Function Testing
Why Choose Soltree Voltage Protectors
Smart protection, accurate monitoring, and long-lasting performance for safer power systems.
Accurate Digital Display
Our digital models feature real-time voltage and current display, giving users clear and precise monitoring to ensure system stability.
Reliable Full Protection
Protects devices against too much voltage, too little voltage, and too much power, which helps keep them from breaking and makes them last longer.
Easy Installation & Operation
The small size and ability to install on a DIN rail make it easy and quick to set up, and it may be used at home or in a business.
Factory Direct, More Value
Made in-house with stringent quality control and ISO/CE certification, which guarantees low prices and reliable performance.
Customization That Builds Your Brand
You can change your logo, packaging, product design, and distributor support to make your business stand out.
Customized Logo & Branding
Custom logos, labels, and product copywriting to strengthen your brand identity.
Customized Packaging Options
Retail boxes, bulk packaging, and private label designs tailored to your sales channels.
Customized Product Design
From new specifications to complete ODM projects, we bring your product ideas to life.
Customized Distributor Materials
Customized brochures, manuals, and marketing assets to support your sales network.
1. What Is a Digital Voltage Protector?
It not only turns off the power when the voltage is too high or too low, but it also shows you what’s going on in real time on its digital display. It makes sure your devices work safely, reliably, efficiently, and automatically by letting you change the protection levels and recovery time.
Built for Reliable Power Management
Visible Protection, Precise Control
When the voltage is too high or too low, a digital voltage protector immediately cuts off power and then safely restores it when the levels go back to normal. Its built-in screen shows voltage and current in real time, and you can quickly change the thresholds and delay time. The small DIN-rail design fits in residences, rental properties, and commercial/industrial panels. It keeps things from getting damaged, cuts down on downtime, and makes equipment last longer.
2. Key Protection Functions
Digital voltage protectors are designed to provide all-round safety for electrical systems by preventing equipment damage caused by unstable power supply. With intelligent detection and automatic recovery, they ensure stable operation in residential, commercial, and industrial environments.
- Over & Under Voltage Protection
Automatically disconnects power when voltage is too high or too low, restoring safely once levels normalize.
- Overload & Overcurrent Protection
Shuts down circuits under excessive load or abnormal current to prevent overheating and equipment failure.
- Auto Reset Function
When voltage or current returns to safe range, power is restored automatically without manual intervention.
- Delay & Recovery Time Settings (Digital Models)
Customizable delay time avoids nuisance tripping and provides more reliable protection.
- Real-Time Monitoring (Digital Models)
Clear LED/LCD display shows live voltage and current values for instant system status.
- Logo Display Function (Digital Models)
Support for custom logo display on screen, strengthening brand identity while monitoring system data.
3. How Digital Voltage Protectors Work (Smart Display & Settings)
Digital voltage protectors keep an eye on voltage and current all the time. They interrupt power when there is too much voltage, too little voltage, or too much current. Power is safely restored instantly or after a set delay once levels return to normal.
Smart Display & Custom Settings
Digital voltage protectors keep an eye on voltage and current all the time. They interrupt power when there is too much voltage, too little voltage, or too much current. When levels go back to normal, power is safely restored right away or after a defined amount of time.
- Overvoltage Protection – Adjustable cutoff, e.g. 295–125V
- Undervoltage Protection – Adjustable range, e.g. 210–80V
- Overcurrent Protection – 1–63A, prevents excessive load
- Logo Display Option – Digital screen supports branded logo for OEM
Each option is easy to use and can be changed, which makes digital protectors great for professional and precise use.
4. Digital vs. Basic Voltage Protector Comparison
Digital display models let you see and control things in real time, which is great for people who need precise control and visibility. Basic protectors are great for simple or budget-conscious uses because they focus on the most important protection at a lesser cost.
| Feature / Function | Digital Display Protector | Basic Protector |
|---|---|---|
| Real-time Monitoring | ✔ Voltage & current shown on screen | ✘ No display |
| Protection Functions | Overvoltage, undervoltage, overload, delay recovery | Overvoltage, undervoltage, overload |
| User Settings | Adjustable thresholds & delay time | Fixed factory settings |
| Ease of Use | Intuitive screen & buttons | Simple plug & play |
| Application Scenarios | Ideal for users needing monitoring & precision control | Suitable for cost-sensitive projects |
| Price | 💲💲 Slightly higher | 💲 More affordable |
5. Application Scenarios
Digital voltage protectors make ensuring that families, businesses, and industries may use power safely and reliably. They automatically turn off the power when there is too much or too little voltage, too much current, or other unusual conditions. This helps protect equipment from harm, cuts down on downtime, and extends its life.
Reliable Power for Daily Use
Protectors keep items like refrigerators, air conditioners, and TVs safe from unexpected changes in power in homes, so families can relax and not worry.
- Keep refrigerators safe from damage when the voltage decreases.
- Keep air conditioners from breaking down when the voltage goes up.
- Make sure that TVs and computers work safely with stable power.
- Perfect for homes and flats in the 21st century.
Protectors keep items like refrigerators, air conditioners, and TVs safe from unexpected changes in power in homes, so families can relax and not worry.
6. Why Choose Soltree Voltage Protectors?
Digital voltage protectors with smart displays keep an eye on things and keep them safe. They protect against unstable power and let users see and control things in real time, which makes energy management safer and wiser.
Smart Display, Smarter Protection
Unlike traditional protectors, Soltree’s digital models feature an LED/LCD display that shows live voltage, current, and status alerts. This makes it simple for customers to keep an eye on how well the system is working and change the protection levels at any moment.
- Accurate Monitoring: Display of voltage and current in real time
- Over/Under Voltage Protection: fast shut-off and safe recovery
- Overcurrent Protection – Adjustable 1–63A settings for different loads
- Customizable Settings- Users can set delay, recovery, and alarm values directly
When people choose Soltree digital voltage protectors, they get accuracy, safety, and ease of use all in one gadget. This makes them great for homes, businesses, and factories.
7. Installation & User Guide
Digital over/under voltage protectors are easy to install on DIN rails. You don’t need to run any extra wires to connect the input and output terminals. The device is ready to protect your equipment.
Smart Display and Settings
The built-in LCD shows the current and voltage in real time, and users may change the thresholds, delay, and recovery times directly from the front panel buttons. This makes sure that the protection is exactly what you need for your application.
Useful and easy to use
The device is straightforward to use because it has clear indicators, is easy to understand, and resets itself automatically. Great for homes, workshops, and companies who want consistent protection with little maintenance.
What Our Customers Say
Trusted by global clients in residential, commercial, and industrial sectors.
Get Free Samples
Have questions about our products or need assistance with a project? Our team is ready to help you find the perfect electrical solution.
Mail Address
jacky@cnsoltree.com
Phone/Whatsapp
+86 15658672325
Headquarters
Fenghuang Industrial Zone,BaishiTown,Yueqing Zhejiang P.R. China
Contact Us
