As global solar energy installations transition from residential micro-grids to massive utility-scale farms, the demand for robust DC circuit protection has never been higher. The Mini 100A Circuit Breaker (MCB) serves as the critical "nervous system" of a photovoltaic (PV) system. Unlike standard AC breakers, PV MCBs must handle high-energy DC arcs, which do not have a natural zero-crossing point.
At Shuorui Electric, our engineering philosophy centers on Thermal-Magnetic Trip Coordination and Enhanced Arc Extinguishing Chambers. By utilizing specialized permanent magnets to pull the arc into the splitter plates, we ensure circuit interruption within milliseconds, preventing catastrophic equipment failure or fire hazards in systems up to 1500VDC.
Localized solutions tailored for diverse climatic and regulatory environments.
In Germany and Australia, where home battery storage is booming, our 100A MCBs provide the essential disconnect between the inverter and the lithium battery bank, ensuring safe maintenance and overcurrent protection.
Large-scale factory roofs in Southeast Asia utilize our breakers in combiner boxes to manage high-current strings, offering resilience against extreme humidity and temperature fluctuations common in tropical zones.
Integrated solar-to-EV charging stations require 100A protection to manage the rapid DC charging flow, where our MCBs ensure zero-failure operation during peak load transfers.
Located in the Electrical Capital of China, Shuorui Electric leverages a hyper-dense ecosystem of raw material suppliers and R&D labs. This proximity allows us to achieve 30% higher manufacturing efficiency than global competitors.
The next generation of our 100A MCBs will feature RS485 and Zigbee communication modules, allowing plant operators to monitor real-time temperature and trip status via cloud platforms.
Researching hybrid solid-state technology to achieve arc-free switching, significantly increasing the lifespan of the breaker to over 20 years in extreme PV environments.
Transitioning to 100% recyclable halogen-free plastics for our breaker housings to meet the stringent EU green procurement standards for 2026.
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. Our product line is rich and diverse, covering multiple electrical fields, mainly including miniature circuit breakers (MCB), residual current circuit breakers (MCCB), surge protectors (SPD), and more.
No. DC circuit breakers use specialized magnets to extinguish the arc. Using a DC breaker for AC might lead to improper arc quenching and damage the device or the system.
Our Mini series provides a high current density (100A) in a standard DIN-rail width (18mm per pole), allowing more protection devices to be installed in a smaller combiner box.
Yes, all our 100A PV MCBs are compliant with IEC 60947-2 standards and carry CE and RoHS certifications. TUV certification is available for specific bulk orders.
Our breakers are calibrated for 40°C. We provide technical data sheets with derating coefficients for installations in desert environments or high-temperature industrial settings.
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