Engineered specifically to comply with Japan's rigorous METI criteria, featuring high waterproof grades and surge protection levels.
As Japan transitions from the traditional Feed-in Tariff (FIT) to the Feed-in Premium (FIP) model, the emphasis on system efficiency, reliability, and long-term cost containment has reached an all-time high.
Japanese solar projects demand component excellence. String combiner boxes must not only withstand the technical grid requirements set by major utilities (like TEPCO or KEPCO) but must also survive severe weather anomalies: heavy snow loading in Tohoku and Hokkaido, high-humidity salt mist corrosion along the coastal lines of Kyushu and Shikoku, and tropical typhoon storms in Okinawa.
Furthermore, JET standards (Japan Electrical Safety & Environment Technology Laboratories) require stringent electrical compliance. The combiner boxes must display robust surge protection (SPD), strict thermal control to prevent fires, and reliable isolator switches to ensure safe maintenance practices.
Coastal Areas: Require Salt Spray Resistant Enclosures (C5-M Classification) and highly secure double-locking mechanisms to prevent humid air ingress.
Heavy Snow Regions: Demand robust polycarbonate or heavy-duty metal enclosures configured for bottom-entry wiring to prevent moisture penetration from ice damming.
Grid Requirements: Strict limits on harmonic distortions and requirements for rapid shutdown systems to comply with Fire Protection Association regulations.
Why Japanese EPC contractors, asset managers, and solar developers choose Chinese Tier-1 manufacturing partners.
By leveraging Chinese industrial clusters in Fujian and Zhejiang, exporters deliver premium components at a fraction of local Japanese assembly costs.
Configurations tailored for specific Japanese grid tie-in setups, integrating either AC or DC breakers, specialized monitoring cards, and diverse input configurations.
Strategic partnerships with international suppliers like CHNT and BENY ensure components inside the boxes carry TUV, CE, and UL approvals, aligning perfectly with JET expectations.
The manufacturing superiority of Chinese factories lies in the seamless vertical integration of the raw materials, injection molding, electrical component design, and automated testing lines. For a Japanese importer, sourcing from a vetted Chinese factory translates to shorter lead times, rigorous quality reports, and customized structural configurations that comply with localized wind load and structural mounting guidelines.
Xiamen Jonas Energy Co., Ltd. coordinates these supply chain benefits directly to Japanese ports, ensuring compliance documents, customs clearings, and component safety sheets are in order, matching all the compliance requirements of Japan's METI.
| Technical Parameters | Typical Industrial Requirement | Japanese Market Specification | Jonas Energy Compliance Standard |
|---|---|---|---|
| System Voltage | 1000V DC | Up to 1500V DC (FIP optimization) | Compatible with 500V / 1000V / 1500V systems |
| Enclosure Protection | IP65 IP Code | IP65 to IP66 (High humidity / marine spray) | IP65 / IP66 ABS, polycarbonate & metal designs |
| Lightning Protection | Class II SPD | Specialized Class I+II Surge Protection | High-quality surge arresters integrated |
| Working Temperature | -20°C to +55°C | -25°C to +60°C (Hokkaido winter to Okinawa summer) | Certified thermal tolerances with custom breathers |
A professional provider of renewable energy solutions dedicated to excellence, innovation, and global distribution.
Xiamen Jonas Energy Co., Ltd. is headquartered in Xiamen, Fujian Province, China. Since its establishment, the company has been dedicated to the research, development, manufacturing, and global distribution of advanced photovoltaic and energy storage products.
With a strong commitment to innovation and sustainability, Jonas Energy offers a comprehensive portfolio of solar energy solutions, including solar panels, inverters, energy storage batteries, mounting systems, and complete solar power generation systems. Our products are designed to meet the diverse needs of residential, commercial, industrial, and utility-scale projects worldwide.
We work closely with internationally recognized manufacturers and technology partners to provide a wide range of reliable energy storage solutions, including wall-mounted batteries, all-in-one storage systems, rack-mounted batteries, and containerized energy storage systems (ESS). Through continuous innovation and strategic partnerships, we help customers achieve greater energy independence and efficiency.
As a high-tech enterprise, Jonas Energy operates modern production facilities equipped with advanced manufacturing and testing equipment. Our annual production capacity reaches several gigawatts, enabling us to efficiently serve customers across global markets.
Our experienced R&D team consists of highly qualified engineers and technical specialists who continuously focus on product innovation, performance optimization, and technological advancement in the renewable energy sector. By integrating cutting-edge technologies, we ensure that our solutions remain competitive, efficient, and future-ready.
All products undergo rigorous testing and strict quality control. Our products comply with international standards and certifications, including IEC, CE, TUV, ISO9001, and ISO14001.
Our manufacturing facilities utilize highly efficient and precise production and inspection equipment. We maintain exceptional product consistency and quality.
Our multidisciplinary team includes experts in photovoltaic technology, energy storage systems, engineering design, and international business.
From project consultation and system design to product supply, installation guidance, and after-sales support, we tailor solutions to your needs.
Direct transparency of the assembly lines, aging labs, and quality control steps.
Optimizing PV systems across urban rooftops, agricultural land, and mountainous terrain.
Designed to integrate directly with corporate PPA (Power Purchase Agreements). Featuring quick installation configurations and flame-retardant enclosures to meet local building fire codes.
Specialized compact combiner boxes designed to handle specific low-lying mounting racks while resisting dust, pesticides, and localized agricultural moisture.
Configured for environments with varying slopes. Built with smart string monitoring to identify potential performance drops caused by shade from mountain peaks or vegetation.
Explore our full list of models engineered for strict safety standards and variable load requirements.
Technical answers for solar developers, distributors, and EPC engineers importing to Japan.
Yes. Our combiner boxes are engineered with components (such as circuit breakers, surge protection devices, and fuses) that carry international testing certifications conforming to JIS standards (Japanese Industrial Standards) and align with METI technical guidelines. We can provide full test reports to support project grid approval processes in Japan.
For snowy regions, we offer enclosures constructed from high-grade ABS or impact-resistant polycarbonate with IP65/IP66 waterproof ratings. These configurations ensure that heavy ice or melting snow cannot breach the seal. We recommend bottom-only cable routing and the integration of micro-ventilation valves to eliminate internal condensation caused by intense freeze-thaw cycles.
We offer specialized corrosion-resistant polycarbonate enclosures and marine-grade stainless steel options with specialized powder coating (exceeding C4/C5-M corrosion categories). Connectors and gland inputs are tightly sealed with UV-resistant EPDM rubber rings to block ambient salt spray.
Yes, Xiamen Jonas Energy Co., Ltd. regularly provides full OEM/ODM customization services. This includes printing specialized terminal markings, schematics, system hazard alerts, and Japanese-language installation manuals to satisfy the site-safety inspectors during utility commissioning.
Jonas Energy
