Engineered to meet international industrial standards including IEC 61439, IP65-IP68 ingress protection ratings, and robust electrical shielding.
Established in 2011 in Hangzhou, Zhejiang Province, Hangzhou SN Electrical Co., Ltd. has evolved into a leading enterprise in the engineering, design, and manufacture of customized low-voltage power distribution boxes, smart switchgear, and high-performance industrial electrical enclosures. Operating with a core commitment to electrical safety, smart grid compatibility, and structural durability, the company acts as a trusted global OEM/ODM manufacturer.
Benefiting from Hangzhou's modern industrial supply ecosystem and rapid access to the international shipping ports of Ningbo and Shanghai, SN Electrical facilitates seamless logistics and trade compliance for heavy-industry contractors, municipal grid builders, utility engineers, and procurement managers worldwide.
Discover our vertically integrated manufacturing facility, designed to deliver custom sheet metal fabrication, precision assembly, and intensive QA verification.
At Hangzhou SN Electrical Co., Ltd., we tackle global procurement challenges by integrating advanced manufacturing technologies within our 18,000 square meter facility. Our physical facility is optimized for cellular manufacturing, housing computer-controlled metal fabrication machinery, automatic electrostatic powder coating lines, and automated component-insertion testing systems. This integrated setup minimizes waste and maintains structural tolerances down to the sub-millimeter level.
We leverage high-speed CNC laser cutters and high-precision CNC press brakes to work with materials ranging from high-tensile cold-rolled steel and marine-grade stainless steel (SUS304/SUS316) to heavy-duty polycarbonate structures. This ensures that every cabinet maintains mechanical rigidity under physical impacts.
Our fully automated, multi-stage electrostatic powder coating lines apply thermosetting epoxy-polyester coatings. This protective layer ensures excellent UV stability and corrosion resistance, successfully passing 500-hour salt spray tests to protect outdoor switchboards from degradation.
Before leaving our factory, every switchbox and modular cabinet undergoes rigorous safety inspections. This includes dielectric testing, insulation resistance measurements, earth-continuity checks, and IP rating verification using simulated jet spray booths to ensure reliable field performance.
From extreme outdoor utility grids to dust-sensitive classroom environments, discover how our custom engineering fits into modern vertical markets.
Solar PV arrays, wind turbines, and energy storage systems require high-reliability combiners and AC/DC distribution cabinets. We manufacture custom IP65 and IP67 enclosures that withstand UV radiation and high physical thermal loads.
Outdoor telecom installations demand continuous climate management and protection from atmospheric corrosion. Our double-walled insulated stainless steel cabinets shield high-frequency electrical circuits, keeping ambient electronics within optimal operational limits.
Industrial environments with airborne particles and moisture require dustproof, explosion-proof, and chemical-resistant distribution boxes. We configure polycarbonate (PC) and fiberglass-reinforced polyester (GRP) enclosures to offer chemical resistance and long service life.
Our JP series integrated distribution boxes combine reactive power compensation, power distribution, circuit protection, and metering. They are widely used by state grid operators to maintain transmission stability across rural and urban power networks.
The power distribution landscape is transitioning from passive enclosure panels to active, intelligent nodes. To support this transition, SN Electrical is focusing on three key technology pillars:
By integrating environmental sensors and wireless IoT gateways, our next-generation enclosures can self-report environmental hazards such as interior condensation, arc flash occurrences, or mechanical door breach.
This predictive maintenance approach reduces downtime for utility operators and allows engineers to monitor systems remotely, helping prevent unexpected power outages.
Ensuring our customized distribution cabinets meet the grid requirements, safety certifications, and installation standards of your local region.
Because electrical codes vary significantly across global regions, SN Electrical provides tailored technical engineering to ensure complete compatibility:
| Target Region | Standards Compliance | Wiring & Phase Configuration | Common Enclosure Materials |
|---|---|---|---|
| Europe & UK | IEC 61439-1 / -2 / -3, CE, RoHS | 230V Single Phase / 400V Three Phase, DIN Rail Mounted MCBs | Polycarbonate (PC) & Powder-Coated Steel (RAL 7035) |
| North America | UL 508A, NEMA Enclosure Standards | 120/240V Split Phase, 277/480V, NPT Conduit Entries | Stainless Steel SUS304 / 316, Heavy Gauge Galvanized Sheet |
| Middle East & Africa | IEC 61439, Ambient Derating to 50°C+ | Three Phase 380-415V, UV-stable coatings | Elevated base stainless steel with double ventilation louvers |
| Australia & NZ | AS/NZS 3000, AS/NZS 61439 | 230/400V 50Hz, outdoor-weatherproof socket assemblies | UV-Stabilized Polycarbonate, marine-grade aluminum alloys |
* Note: SN Electrical's R&D department provides 2D/3D CAD and SolidWorks modeling for all custom configurations, ensuring every cut-out, gland plate, and busbar bend matches your site requirements before production begins.
Addressing lead times, quality control, engineering verification, and shipping logistics for international electrical projects.
We provide fast prototyping of custom sheet metal designs within 7-10 working days, helping engineers verify dimensions and fit before starting full-scale production.
We source our raw steel, copper busbars, and polymer granules from certified suppliers, providing mill certificates and RoHS compliance declarations for auditing purposes.
All distribution boards are shipped in sea-freight-grade wooden crates or reinforced cardboard cartons with moisture barrier lining to protect them from coastal corrosion during transit.
Highly configurable, weather-resistant models engineered for both static and mobile electrical setups.
Answers to engineering, manufacturing, and sourcing questions about low-voltage assemblies and customized enclosures.
SN Electrical