Surge Protection Device(DC) Manufacturer
Upgrade your electrical system with our surge protection device. We provide reliable, safe, and intelligent solutions for modern homes and industries.
- High Safety Standards – IEC certified, tested for surge protection.
- Reliable Performance – Long service life with fast response time.
- Quick Setup – Compact design, user-friendly replacement.
DC Surge Protection Device Series
Engineered to secure your PV and DC equipment against surges.
Model: STD-2P
- Upgraded MOV chips for higher endurance
- Shielded design for enhanced stability
- Better materials, better components
Model: STD-3P
- Upgraded MOV chips for higher endurance
- Shielded design for enhanced stability
- Better materials, better components
Model: STD-4P
- Upgraded MOV chips for higher endurance
- Shielded design for enhanced stability
- Better materials, better components
Soltree – DC Surge Protectors
Work directly with a professional DC surge protector manufacturer and save up to 30% compared to local providers.
About Soltree
High Quality, Better Price – That’s Soltree
Soltree has been in the electrical business for over 15 years and is committed to making high-quality smart power products such DC surge protectors, energy meters, circuit breakers, and WiFi-enabled power devices. Our solutions are new, dependable, and reasonably priced to satisfy the needs of partners all around the world.
We operate a modern 100,000-square-meter industrial facility with over 200 trained employees, enabling us to produce at scale while maintaining strict quality control. Soltree offers safer, smarter, and more affordable solutions for everything from research and development to packaging.
Soltree – Reliable Electrical Solutions
Global-Ready, Trusted by Professionals
Soltree makes smart electrical products that work for both households and businesses. DC surge protectors are one of our most important products. They are made to protect solar power, energy storage, and DC power systems in a dependable way. We use cutting-edge technology, tight quality control, and efficient manufacturing to make items that meet worldwide standards while keeping costs low. Our goal is to help partners all over the world by making installation easier, operations safer, and energy systems that are smarter and more durable.
Why Choose Soltree Surge Protection Device
Reliable Protection for Electrical Safety
Certified Safety Standards
All SPDs are tested and certified by IEC / CE / ISO, ensuring reliable protection against surges and lightning strikes.
Proven Reliability
Durable design with fast response time, long service life, and stable performance in demanding DC applications.
Competitive Pricing
Direct manufacturing supply allows us to offer cost-effective solutions without compromising on quality.
Professional Support
Technical guidance, product customization, and timely after-sales service to support your business needs.
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.
Table of contents
- 1. What Is a Surge Protection Device(SPD)?
- 2. Key Features of Surge Protection Device
- 3. Always Know Your Protection Status
- 4. Flame-Retardant Material for Safer Protection
- 5. Ultra-Fast Response for Lightning Protection
- 6. Technical Advantages of the STD Series SPD
- 7. What Makes One Surge Protection Device Safer Than Another?
- 8. Frequently Asked Questions About SPDs
1. What Is a Surge Protection Device(SPD)?
Power systems often have lightning strikes, power grid oscillations, and line faults. These can trigger sudden high-voltage surges that can damage equipment or even start fires.
Reliable Surge Protection For Safer Power Systems
SPD — Stops danger at the entry, protecting your electrical safety.
Power surges are abrupt increases in voltage that can hurt delicate electronics, stop things from working, and even make things unsafe. A Surge Protection Device (SPD) works by quickly finding unusual voltage and sending the extra energy securely to the ground, where it can’t reach linked devices. SPDs are easy to install and very effective. They are important for both homes and businesses since they safeguard against power outages and keep things safe for a long time.
2. Key Features of Surge Protection Device
Surge Protection Devices (SPDs) protect electrical systems by stopping abrupt voltage spikes from damaging equipment. They make power safer and more reliable for homes, workplaces, and industries. Here are six important qualities that make Soltree SPD an important aspect of modern electrical protection.
- Surge Protection:
Responds within nanoseconds to instantly block harmful voltage surges.
- Flame-retardant Housing:
Built with fire-resistant materials to enhance safety and reliability.
- DIN Rail Mounting:
Quick and convenient installation with globally compatible DIN rail standards
- Modular Design:
Flexible structure allows convenient replacement and maintenance.
- Multiple Protection:
Provides comprehensive defense against lightning, overvoltage, and transient surges.
- Strong Endurance
Durable construction ensures long-lasting performance under harsh conditions.
3. Always Know Your Protection Status
Traditional surge protection device lack a status window, making it impossible to know when the device is damaged and needs replacement. The new SPD comes with a built-in indicator window, offering a clear and intuitive way to check its working condition.
Clear Status, Instant Reminder
The visual indicator makes it easy and quick to check on the system. A green display means the device is working properly, and a red signal clearly tells you when the module needs to be replaced. This easy-to-read design helps you act quickly, keeping your power system safe and avoiding hidden risks. The indicator window gives you a clear view of the device’s health at all times, which gives you peace of mind and makes sure you’re never left guessing about your safety.
4. Flame-Retardant Material for Safer Protection
During lightning strikes, the high voltage and current may break through the surge protector and generate sparks. Without flame-retardant materials, the consequences could be disastrous.
Enhanced Safety with Fire-Resistant Design
The flame-retardant case not only makes the gadget last longer, but it also adds an extra layer of protection in harsh environments. It helps protect your electrical network for both residential and industrial uses by lowering the risk of fire spreading.
Using high-quality materials not only makes the building fire-resistant, but it also makes it stable and reliable over time, even when there are recurrent surge episodes. This extra protection guarantees that your system is secure every day, so you can be sure of both its performance and safety.
5. Ultra-Fast Response for Lightning Protection
When facing lightning strikes or other sudden surges, the response speed of a surge protector is critical—only a fast enough reaction can truly safeguard your electrical safety.
Nanosecond-Level Protection You Can Trust
Every second counts when lightning hits. The sophisticated parts of Soltree SPDs make them respond in less than a millisecond. This lightning-fast action stops hazardous surges before they can get to your equipment, which cuts down on downtime and stops expensive damage.
In addition to speed, Soltree’s precision surge control makes sure that performance stays the same even in very bad conditions. This super-fast protection keeps your power systems safe and your important equipment running with no interruption, whether they are in homes, businesses, or factories.
6. Technical Advantages of the STD Series SPD
Explore the advanced design and high-quality components that make the STD Series SPD more durable, efficient, and reliable.
| Item / Feature | ⭐ STD Series |
|---|---|
| Modular Design | Upgraded pull-out design with heat dissipation |
| Chip Quality | Upgraded Version |
| Chip Encapsulation | Shield Type, Independent Chip Encapsulation |
| Mounting Base | New Version, More Durable |
| Socket Connection | High-Quality Copper Parts |
| Tripping Mechanism | Top push-trip mechanism, Faster Response |
| Chip Pin Connection | High-Quality Copper |
7. What Makes One Surge Protection Device Safer Than Another?
Not all surge protectors are created equal—discover why design and build quality make all the difference in keeping your equipment safe.
- Poorest quality
Some low-quality surge protectors cut costs by skipping proper epoxy encapsulation, leaving the MOV chip vulnerable to moisture and premature failure. Worse still, without a reliable tripping mechanism, they cannot disconnect in time during lightning strikes—exposing your equipment directly to dangerous high voltage.
- STD Series SPD
Soltree’s STD is a high-quality DC surge protector. It has MOV chips that are separately encased and can dissipate heat better, as well as a lot of high-quality copper parts, such as screws, springs, and connectors. It also uses the best double-sided design, which makes both chip heat dissipation and disconnecting speed even better. These enhancements make the gadget last longer and respond faster, giving it the best surge protection available.
8. Know more about SPD
Learn more about Surge Protective Devices (SPDs)
1.Surge protective device (SPD) working principle
In the simplest terms, when a transient voltage happens on the protected circuit, a surge protective device stops the current flow by closing its switch contacts, controls the transient voltage, and sends the current back to its source or ground. That stops voltage transients from hurting connected devices. At least one of the parts of the surge safety device must be non-linear. That changes between a high and low impedance state depending on the situation.
The surge protecting device is in a high-impedance condition at normal working voltages, so it doesn’t damage the system. When there is a transient voltage on the circuit, the surge protective device goes into a condition of conduction (or low impedance) and sends the surge current back to its source or ground, much like the normal discharge current. This keeps the voltage at a safer level by limiting or clamping it. After the transient diverts, the surge protecting device immediately goes back to its high-impedance state.
2.Main types of SPD
Type 1 SPD
Installed at the main distribution board or building service entrance.
Designed to discharge high-energy surge currents from direct lightning strikes.
Tested with a 10/350 μs impulse current waveform.
Type 2 SPD
Installed in sub-distribution panels inside the building.
Protects electrical systems and equipment from switching surges and indirect lightning effects.
Tested with an 8/20 μs discharge current waveform.
Type 3 SPD
Installed close to sensitive terminal equipment, such as sockets, plug-in strips, or individual devices.
Provides fine protection against residual surges that pass through Type 1 and Type 2 SPDs.
Tested with a combination waveform (1.2/50 μs voltage and 8/20 μs current).
Type 1+2 SPD
A combined protective device that integrates the functions of Type 1 and Type 2 SPDs.
Capable of withstanding direct lightning currents while also limiting switching surges.
Often used in compact installations to provide comprehensive protection with a single device.
3.Specifications of SPD
Uc: the maximum RMS voltage that an SPD can withstand continuously without degradation, representing the highest voltage the device can operate under normal conditions.
Up: the residual voltage that appears across the SPD when it conducts surge current, representing the actual protection level offered to the connected equipment.
In: the current level of a standardized lightning surge waveform that the SPD can withstand repeatedly, representing its long-term endurance.
Imax: the highest surge current the SPD can withstand once, representing its ultimate capacity.
8/20 μs: the standard surge current waveform used to test the nominal and maximum discharge current of an SPD. It simulates typical switching surges or indirect lightning effects, representing the SPD’s ability to handle frequent surge events.
10/350 μs:the standardized lightning impulse current waveform mainly used for Type 1 SPDs. It simulates direct lightning strikes or high-energy surge conditions, representing the SPD’s capacity to withstand extreme, high-energy impulses.
What Our Customers Say
Trusted by global clients in residential, commercial, and industrial sectors.
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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
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