Engineered to handle extreme environmental demands, our distribution panels, junction boxes, and meter cabinets ensure reliable energy transmission across global architectures.
Founded in 2011 in Hangzhou, Zhejiang Province, Hangzhou SN Electrical Co., Ltd. has established itself as an authoritative leader in low-voltage electrical distribution systems, smart energy cabinets, and heavy-duty industrial enclosures. With over a decade of deep engineering expertise, our operations are optimized to deliver reliable power management components configured to the precise standards of today's changing grid landscapes.
Spanning an expansive, highly automated manufacturing ecosystem of over 18,000 square meters and employing a highly skilled workforce of 250+ technical specialists, we integrate entire production lifecycles: from computerized structural design (CAD/SolidWorks) and sheet metal laser-fabrication to robotic welding, powder coating, dynamic assembly, and comprehensive dielectric testing. Our location in the heart of China’s high-tech industrial manufacturing corridor ensures efficient sourcing of top-tier materials and close proximity to critical global shipping ports, streamlining international freight logistics.
As microgrids, decentralized renewable energy, and electric mobility scale worldwide, standard off-the-shelf enclosures are no longer sufficient. Modern infrastructures require intelligent, secure power distribution hardware.
Modern distribution boards must integrate IoT gateways, smart meters, and circuit monitoring modules. Our enclosures are built to accommodate advanced electronics with proper magnetic shielding and optimized thermal channels, ensuring communication modules run without interference.
Global procurement teams face challenging environments—from high-salinity marine docks and wind farms to dust-heavy desert solar installations. Our outdoor enclosures utilize marine-grade 304 and 316 stainless steel, offering IP65/IP66 ingress protection and NEMA-rated resilience against corrosion.
The global push for EV charging infrastructure requires dedicated EV distribution boards capable of managing high-current surge cycles. Our specialized boards combine structural safety, localized heat management, and robust circuit breaker options to handle continuous load stresses.
The manufacturing ecosystem in Zhejiang Province provides a significant competitive advantage for global electrical system builders. By combining raw material access, specialized engineering talent, and efficient component supply chains, SN Electrical delivers high-performing electrical solutions at competitive prices.
Our vertical integration model minimizes external dependencies. In our factory, raw steel sheets or engineering-grade polycarbonate plastics undergo computerized processing: laser cutting, hydraulic stamping, folding, and continuous robotic welding. This level of control allows us to offer short lead times, maintain tight tolerances, and customize dimensions or features on short notice.
Our procurement system sources components from top-tier partners (including Schneider, ABB, and Siemens switchgear integrations), ensuring the internal circuits match the durability of the outer enclosure.
A key focus for SN Electrical is meeting the local standards of the regions where our products are installed. Electrical distribution boxes operate under strict regulatory and safety requirements, which vary by market.
For European markets, our enclosures comply with the Low Voltage Directive (LVD) 2014/35/EU and hold full CE certification. In North America, we design enclosures to meet NEMA classification equivalents (Type 1, 3R, 4, 4X, and 12). For projects in hazardous industrial environments, we offer specialized explosion-proof panels that comply with ATEX and IECEx standards, containing internal electrical faults and preventing ignition in volatile environments.
Our engineering support services help clients navigate localized electrical requirements. Whether adapting internal busbar layouts, changing entry knockouts, or supplying country-specific terminal configurations, our technical support ensures easy installation and smooth local utility inspections.
From smart urban grids to remote solar power installations, SN Electrical products provide reliable performance and protection in diverse environments worldwide.
Integrated distribution systems designed for commercial DC fast chargers. These panels feature specialized ventilation to handle thermal loads and build-ups, protecting sensitive power conversion modules from seasonal weather changes.
High-capacity solar combiner boxes fitted with surge protective devices (SPD) and DC disconnects. IP65 enclosures protect internal components from UV radiation and fine dust, ensuring continuous power export in open fields.
Explosion-proof and corrosion-resistant enclosures built for oil and gas plants, fertilizer hubs, and marine vessels. These custom enclosures are engineered to prevent gas or dust ignition and resist airborne chemical corrosion.
Find answers to common questions about customization options, safety standards, and ordering processes for SN Electrical's power distribution solutions.
We adapt our manufacturing using modular internal mounting systems. We work closely with our clients' engineering teams to modify cabinet dimensions, configure mounting holes, adjust door orientations, and add customized cutouts. Our internal designs support various DIN rail and busbar configurations, making them compatible with components from major brands like ABB, Schneider, and Eaton.
Every product batch undergoes testing in our facility. This includes dielectric testing, earth continuity testing, mechanical operation checks, and powder-coat thickness testing. For outdoor enclosures, we verify water resistance with high-pressure spray testing to confirm compliance with IP65 and IP66 ingress protection standards.
Standard OEM production lead times typically range from 20 to 30 days, depending on order size and customization requirements. Located in Hangzhou near major ports like Ningbo and Shanghai, we offer efficient domestic transport and export documentation, helping minimize transit times for our international clients.
Yes, our engineering department provides complete design, prototyping, and validation services. We regularly partner with commercial builders, grid managers, and industrial firms to develop custom solutions for solar combiner systems, smart sub-metering setups, and motor control centers.
Explore our heavy-duty weather-sealed stainless steel cabinets, specialized explosion-proof junction units, and wall-mounted electrical enclosures.
SN Electrical
