As a leading China Surge Lightning Arrester DC SPD Supplier, we recognize that global enterprise procurement is no longer just about unit cost. The shift toward 1500VDC Solar Architectures and the increasing frequency of extreme weather events require SPDs that offer both high discharge capacity (Imax 40kA) and low protection levels (Up ≤ 4.0kV).
For EPC (Engineering, Procurement, and Construction) contractors in Europe and North America, reliability means minimizing downtime. Our T2 Class SPDs are engineered with high-energy MOVs (Metal Oxide Varistors) that provide a response time of <25ns, ensuring sensitive PV inverters are shielded from atmospheric surges.
Bypassing intermediaries and working directly with China SPD factories allows for deep technical customization. Whether it's the 1500VDC extreme voltage systems or 500VDC medium voltage setups, our OEM/ODM services provide localized compliance and rapid prototyping.
The industry is moving toward "Smart SPDs" with integrated IoT monitoring. Our current roadmap focuses on thermal disconnect efficiency and remote signaling (Remote Contact) to notify maintenance teams before a failure occurs.
Zhejiang Shuorui Electric Co., Ltd. is located in Liushi, Wenzhou, Zhejiang, the electrical capital of China. It is the core area of the electrical industry and gathers many excellent electrical companies and rich industry resources. As a modern company integrating R&D, production and sales, Shuorui Electric is committed to providing customers with high-quality electrical products and solutions.
The company always adheres to the business philosophy of "the most cutting-edge technology, the best quality, the most sincere service, and the most favorable price", striving to maintain a leading position in the fierce market competition.
In order to achieve excellence, Shuorui Electric has continuously increased its investment in technology research and development, established a high-quality R&D team, focused on the development of new products and technological innovation, and ensured that the company is always at the forefront of the industry.
Each product produced by the company is carefully designed, with a novel and beautiful appearance, in line with modern aesthetics, and high efficiency and reliability in function. Our products have entered most of the domestic and foreign electrical markets at reasonable prices, winning the trust and support of our customers.
From the purchase of parts to the delivery of the whole machine, we have established strict quality inspection standards. The company has introduced advanced production equipment and technology to ensure that every product can meet international standards.
Our line covers MCBs, MCCBs, SPDs, Photovoltaic Connectors, and more, offering a one-stop-shop for DC and AC protection needs in renewable energy sectors.
We provide tailored solutions for international brands, ensuring that technical specifications meet local grid requirements and safety certifications.
Full compliance with international safety protocols ensures that our SPDs can be deployed in the most sensitive utility-scale solar farms globally.
Integrating 1500VDC SPDs at the string level and central inverter level. We solve the challenge of transient overvoltage in large-scale solar arrays spanning hectares of open land.
With DC Fast Charging becoming the standard, our 800V and 1000V SPDs protect the expensive power electronics in charging piles from grid-side surges.
Protecting PLC systems and sensitive sensor networks in smart factories where electrical noise and lightning are constant threats to uptime.
Zhejiang Shuorui Electric is looking to the future. We are investing in Silicon Carbide (SiC) surge mitigation and modular SPD designs that allow for tool-free replacement. Our goal is to promote technological innovation and expand product lines to occupy a pivotal position in the global Net-Zero transition.
A1: Type 1 (T1) SPDs are designed to handle direct lightning strikes (10/350 μs waveform), typically installed at the main entrance. Type 2 (T2) SPDs, like our 40kA DC models, protect against indirect surges and switching overvoltages (8/20 μs waveform), and are essential for protecting PV inverters.
A2: 1500VDC systems allow for longer strings, reducing the number of combiner boxes and wiring, which lowers the overall Balance of System (BOS) costs. However, this requires more robust SPD insulation and higher Uc (Maximum Continuous Operating Voltage) ratings.
A3: We source high-purity Zinc Oxide for our MOVs and subject every batch to rigorous thermal stability tests. Our SPDs feature a dual-mechanical disconnection system that ensures safe isolation even under end-of-life conditions.
A4: Yes, Shuorui SPDs are tested for performance in temperatures ranging from -40°C to +85°C. For high-altitude applications, we ensure creepage distances exceed standard IEC requirements to prevent arcing in thinner air.
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