Explore our premium, factory-direct industrial protection equipment engineered for high-voltage DC systems, solar photovoltaics, and smart residential grids.
Engineered for solar PV arrays, this Type 2 SPD offers robust 40kA surge suppression to protect high-voltage DC inverters and distribution systems.
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High-performance low-voltage DC lightning protection device designed for industrial automation, telecom, and control circuits.
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State-of-the-art lightning surge protection featuring advanced thermal disconnectors and visual status indicators for solar systems.
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IoT-enabled smart switch providing real-time voltage metering, remote mobile control, leakage protection, and automatic reclosing.
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Three-pole DC surge protection device optimized for commercial and residential 500V solar PV combiner boxes.
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High-reliability wholesale surge protection modules designed for global OEM solar distribution panel manufacturers.
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Heavy-duty 3-pole 1000V DC SPD offering maximum safety margins for large-scale utility solar installations.
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Self-resetting dual-pole voltage protector designed to safeguard household appliances from grid fluctuations.
View DetailsAs the global energy landscape transitions toward decentralized renewable energy sources, smart grids, and electric vehicle (EV) infrastructure, the demand for highly reliable power distribution systems has reached unprecedented heights. Grid instability, lightning strikes, and transient overvoltages pose severe threats to sensitive electronic equipment, industrial machinery, and solar PV installations. In this context, Voltage Protectors and Voltage Meters are no longer mere passive safety components; they have evolved into critical, intelligent nodes of modern electrical networks.
Zhejiang Shuorui Electric Co., Ltd., located in the heart of China's electrical manufacturing capital, Liushi, Wenzhou, stands at the forefront of this technological shift. By integrating advanced micro-controller units (MCUs), Internet of Things (IoT) connectivity, and robust physical surge suppression materials, we deliver comprehensive protection and metering solutions that meet the stringent demands of global procurement professionals, grid engineers, and industrial system integrators.
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 this goal, 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.
Understanding the engineering principles behind advanced circuit protection is vital for selecting the correct components for industrial and commercial applications.
Our self-resetting protectors continuously monitor the incoming line voltage. Using a high-speed microprocessor, they detect voltage spikes or drops instantly. If the voltage exceeds or falls below the pre-set threshold, the device disconnects the circuit within <0.1 seconds. Once the grid voltage stabilizes, the device automatically resets and restores power after a user-defined delay, preventing damage to downstream compressors, motors, and digital electronics.
Designed specifically for photovoltaic (PV) systems operating at 500VDC, 800VDC, 1000VDC, and 1500VDC. These Type 2 (T2) SPDs utilize high-energy Metal Oxide Varistors (MOVs) paired with Gas Discharge Tubes (GDTs). With a maximum discharge capacity ($I_{max}$) of 40kA, they safely divert transient lightning currents to the ground, clamping the voltage to a level ($U_p$) that is safe for the inverter's internal electronics.
Integrating WiFi connectivity allows our smart leakage protection switches to communicate directly with mobile applications and centralized SCADA systems. Users can monitor real-time voltage, current, power consumption, and leakage current. The device supports remote switching, scheduled tasks, and automatic reclosing after a fault is cleared, minimizing downtime in remote telecom base stations and smart agricultural setups.
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.
In the production process, Shuorui Electric strictly controls every link, from the purchase of parts to the delivery of the whole machine, and has established strict quality inspection standards. The company has introduced advanced production equipment and technology to ensure that every product can meet international standards.
Our extensive product line covers MCBs, MCCBs, SPDs, Smart Control Boxes, PV connectors, disconnectors, AC contactors, socket switches, overvoltage protectors, auxiliary contacts, shunt releases, and smart remote control switches.
We provide comprehensive customization services for global distributors and engineering contractors. From custom voltage thresholds and response times to private labeling and custom packaging, our R&D team delivers tailored solutions.
Shuorui Electric operates under a certified ISO9001 quality management system. Our products are compliant with CE, RoHS, and other international safety standards, ensuring smooth customs clearance and local grid compliance.
How industrial buyers are adapting to the demands of smart grids, renewable energy, and localized compliance.
Modern solar arrays operate at high DC voltages (up to 1500V) to minimize transmission losses. This requires specialized DC SPDs and circuit breakers capable of extinguishing DC arcs. Shuorui provides dedicated 500V, 800V, 1000V, and 1500V DC surge protectors that safeguard expensive central and string inverters from lightning-induced transients.
Commercial and residential buildings are increasingly integrating IoT-enabled distribution boards. Our WiFi-connected overvoltage, undervoltage, and leakage protection switches allow facility managers to monitor power quality remotely, track energy consumption, and receive instant push notifications on their smartphones when a fault occurs.
Electric vehicle charging stations are highly sensitive to grid voltage fluctuations and surges. A single voltage spike can destroy the charging controller or damage the connected vehicle's battery management system (BMS). Our heavy-duty 63A automatic reset voltage protectors are widely used in EV charger input panels to ensure continuous, safe charging.
Our vision for the next generation of intelligent electrical protection and grid-edge monitoring devices.
Expanding our smart reclosing switch lineup to support Matter, Zigbee, and LoRaWAN protocols, enabling seamless integration with diverse smart home and industrial IoT ecosystems.
Developing algorithms that analyze voltage and current waveforms to predict equipment failures and grid anomalies before they cause downtime.
Researching semiconductor-based circuit breakers and protectors that offer microsecond-level response times and near-infinite mechanical lifespan.
Take a virtual tour of our state-of-the-art manufacturing facility, advanced testing laboratories, and meet our dedicated engineering team.
Shuorui Electric products are manufactured under strict ISO9001 guidelines and comply with international electrical safety regulations, ensuring seamless integration into global markets.
Our highly sought-after product lines, engineered for maximum reliability, safety, and modern aesthetic appeal.
Overvoltage and undervoltage protectors are mainly used in the incoming lines of residential household distribution boxes or distribution lines that need to protect single-phase electrical equipment, such as power supply systems in homes and small commercial spaces.
The NC Red DC circuit breaker is designed for demanding DC applications, providing essential circuit protection where reliability is critical. Engineered to provide critical overload and short-circuit protection in high-current solar arrays.
Designed for three-phase incoming lines. When overvoltage or undervoltage occurs in a three-phase line, it quickly cuts off the power supply. Once the voltage returns to normal, it automatically reconnects after a safe delay period.
Suitable for circuits with an AC frequency of 50Hz/60Hz, a rated working voltage of DC500V, DC1000V, or DC1500V, and a rated current up to 63A. It is mainly used to protect solar PV arrays and battery banks against overloads and short circuits.
We offer tailor-made electrical components designed to fit your specific grid requirements. Our advanced assembly lines and rigorous testing protocols guarantee that your custom orders perform flawlessly under extreme conditions.
Get expert answers to common questions regarding voltage protection, surge suppression, and global procurement.
High-quality, factory-direct electrical components designed to safeguard your critical infrastructure.
Compact dual-pole surge protection module designed for low-voltage DC control systems and telecom equipment.
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High-capacity 1000V DC surge protection modules for large-scale solar farms and commercial PV arrays.
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Three-pole surge protector optimized for medium-voltage DC systems, battery storage, and microgrids.
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Dual-pole 500VDC surge protector providing reliable protection for residential solar power systems.
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Smart IoT leakage protection switch with adjustable current settings (1-63A) and automatic reclosing.
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Three-pole low-voltage DC surge protector designed for industrial control panels and automation networks.
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Advanced 800VDC surge protector designed to safeguard high-voltage DC distribution systems and solar arrays.
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High-visibility orange 800VDC surge protective device offering robust lightning protection for commercial solar setups.
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