About Treasol — PV Connector Manufacturer
Photovoltaic connector manufacturer based in Dongguan, Guangdong, China. We develop and manufacture solar PV connection products — PV connectors, MC4-compatible connectors, Solar Cable connectors, Solar Branch connectors, Solar Fuse connectors, and PV Diode connectors, PV junction boxes and wiring harness assemblies — for residential, commercial, industrial and utility-scale applications.
Who Is Treasol?
Treasol is the solar connection product brand of Dongguan Treasun New Energy Technology Co., Ltd., a photovoltaic connector manufacturer based in Dongguan, Guangdong, China. Throughout this website, Treasol refers to the brand and product portfolio of Dongguan Treasun New Energy Technology Co., Ltd.
Founded in 2009 in Dongguan, Guangdong, China, Treasol has developed its product portfolio from photovoltaic connection components to a broader range of solar connection solutions.
Our core products include PV connectors, MC4-compatible connectors, PV cable connectors, PV branch connectors, PV fuse connectors, PV diode connectors, PV junction boxes and solar wiring harness assemblies.
Treasol works with solar installers, distributors, EPC companies and renewable energy businesses that require photovoltaic connection products for different project and supply requirements.
For company background and manufacturing information, visit our PV Connector Manufacturing page.
Treasol at a Glance
| Company | Treasun New Energy Technology Co., Ltd. |
|---|---|
| Industry | Photovoltaic connection products |
| Location | Dongguan, Guangdong, China |
| Founded | 2009 |
| Main products | PV connectors, MC4-compatible connectors, branch connectors, fuse connectors, diode connectors, PV junction boxes and solar wiring harness assemblies |
| Main applications | Residential, commercial, industrial and utility-scale solar PV and renewable energy applications |
| Services | Standard products, OEM and customized connection solutions |
| Certification | TÜV Rheinland, UL, CE and RoHS documentation available depending on the specific product and applicable certification scope |
What Treasol Manufactures
Treasol manufactures photovoltaic connectors and related solar connection products for different electrical connection requirements within solar PV systems.
PV Connectors
Our PV connector range includes solar cable connectors and panel-side connection products for photovoltaic electrical connections. Different models offer different electrical ratings, cable ranges, environmental protection levels and certification scopes.
Refer to the technical data of the specific model when selecting a connector for a solar PV application.
Browse the full range: PV connectors
MC4-Compatible Connectors
Treasol manufactures MC4-compatible PV connector products designed for use in MC4-type photovoltaic connection systems. "MC4-compatible" does not mean universal interchangeability between connectors from different manufacturers — physical fit alone does not establish electrical, mechanical or certification compatibility.
The specific mating combination should be verified against the applicable manufacturer documentation, connector specifications and project requirements.
Learn more about MC4-compatible solar connectors and PV connector compatibility
Branch Connectors
Branch connectors are designed for photovoltaic connection configurations where multiple PV conductors or strings need to be connected according to the system design.
Treasol offers different branch connector configurations with model-specific electrical and environmental specifications.
View branch connectors
Fuse Connectors
PV fuse connectors integrate fuse protection into photovoltaic connection assemblies. Treasol offers solar fuse connector products with model-specific voltage, current, fuse and environmental ratings.
The appropriate fuse rating should be selected according to the PV system design, equipment requirements and applicable electrical standards.
Diode Connectors
Diode connectors are photovoltaic connection components designed for applications requiring diode-based electrical functions.
The applicable electrical characteristics depend on the specific product model and system configuration.
View PV diode connectors
PV Junction Boxes
Treasol manufactures PV junction box products for photovoltaic connection and electrical integration applications.
Different junction box models have different electrical ratings, enclosure protection levels, materials and connection configurations.
View PV junction boxes
Solar Wiring Harness Assemblies
Treasol also manufactures solar cable assemblies and wiring harnesses for photovoltaic applications.
Wiring harness solutions can be supplied according to applicable cable, connector, configuration and project requirements.
PV Connector Manufacturing Capabilities
Treasol’s manufacturing activities cover product development, molding, assembly, cable processing, wiring harness production, quality inspection and testing. The process runs in stages designed to maintain product consistency and meet the applicable technical requirements of individual products.
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01
Product Development
Our engineering team develops photovoltaic connection products according to applicable electrical, mechanical and environmental requirements.
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02
Precision Molding
Plastic components are produced through molding processes suitable for the applicable connector and junction box designs.
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03
Connector Assembly
Connector components are assembled according to the product structure and manufacturing requirements.
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04
Cable & Harness Assembly
Treasol produces solar cable assemblies and wiring harness products for photovoltaic connection applications.
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05
Electrical Testing
Applicable products undergo electrical inspection and testing according to their product specifications and quality requirements.
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06
Final Inspection
Finished products are inspected before packaging and delivery.
For a closer look at our manufacturing process, visit our PV Connector Manufacturing page.
Quality Control and Testing
PV connectors are electrical connection components used in outdoor solar environments, where electrical, mechanical and environmental performance are important considerations. Treasol applies quality control procedures throughout different stages of manufacturing, from incoming materials to finished products. Depending on the product model and applicable requirements, inspection and testing may cover:
- Contact resistance
- Electrical performance
- Dielectric withstand voltage
- Mechanical performance
- Connection and locking performance
- Environmental resistance
- Temperature-related performance
- Final product inspection
Testing Equipment
Testing equipment and inspection methods vary according to the product model, manufacturing process and applicable certification or quality requirements. The equipment shown below represents testing capabilities used for applicable photovoltaic connection products.
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Constant Temperature and Humidity Testing Equipment
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Dielectric Withstand Voltage Tester
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Fuse Tester
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Insertion and Withdrawal Force Tester
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Programmable DC Power Supply
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Pull-out Force Testing Machine
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Tensile Tester
For detailed information about certifications and testing, visit our Certifications & Quality Standards page.
Certifications and Compliance
Treasol photovoltaic connection products are available with certification and compliance documentation including TÜV Rheinland, UL, CE and RoHS, depending on the specific product and applicable certification scope. Our certification portfolio includes documentation related to photovoltaic connectors, solar fuse connectors and junction box products. To see the standards our products are assessed against, and the scope each one covers, use the PV connector and solar cable standards reference.
TÜV Rheinland
Certification documentation for applicable PV connector and connection products, according to the certified product scope.
UL
UL-related listing or compliance documentation available depending on the specific product and its certification scope.
CE
CE marking documentation for applicable products placed on the European market.
RoHS
RoHS compliance documentation for applicable products, covering restricted substances.
Product-Specific Certification
For photovoltaic connection products, important technical information may include:
- Rated voltage
- Rated current
- Contact resistance
- Cable size
- Protection rating
- Temperature range
- Dielectric withstand voltage
- Applicable certification
- Applicable standards
Applicable standards and certification requirements vary between products. Certification claims should always be evaluated against the certificate and technical documentation for the specific model. Customers should confirm these parameters before placing an order or using the product in a PV installation.
Applications and Global Markets
Treasol photovoltaic connection products are developed for a range of solar PV and renewable energy applications. Our products support different connection requirements across residential, commercial, industrial and utility-scale photovoltaic installations.
Residential Solar PV
PV connectors and wiring solutions can be used for residential photovoltaic installations according to the system design and applicable requirements.
Commercial and Industrial Solar
Commercial and industrial PV systems require reliable electrical connection components suitable for their voltage, current, cable and environmental requirements.
Utility-Scale Solar
Large-scale solar projects may require large quantities of standardized PV connection components, branch connectors, fuse connectors and wiring harness assemblies.
Energy Storage Applications
Selected connection products may also be used in renewable energy and energy storage-related applications where the product’s electrical and environmental specifications are suitable.
The appropriate product depends on the actual application, system voltage and current, cable size, environmental conditions, connection configuration and certification requirements.
PV Connector Technical Knowledge
Technical guidance to help installers, distributors and EPC contractors evaluate and select photovoltaic connection products.
PV Connector Compatibility
Why physical fit and matching electrical ratings do not automatically prove compatibility between PV connectors from different manufacturers.
How to Select a PV Connector
Key factors include rated voltage, current, cable size, environmental conditions, connector configuration and applicable certification requirements.
PV Connector Quality
Learn how contact resistance, mechanical connection, sealing and manufacturing consistency affect photovoltaic connector performance.
PV Connector Standards
Understand the role of IEC 62852, UL requirements and installation standards when evaluating PV connector products.
OEM and Custom PV Connection Solutions
In addition to standard photovoltaic connection products, Treasol provides OEM and customized solar connection solutions for applicable projects. Customization requirements may include:
Connector Configuration
Product configurations can be discussed according to project-specific electrical and mechanical requirements.
Cable Assemblies
Treasol can provide solar cable assemblies and wiring harness solutions according to applicable project requirements.
Product Labeling
Customized product labeling and branding can be discussed for applicable orders.
Packaging
Packaging requirements can be adapted according to customer and distribution requirements.
Technical Information to Provide
Before production, customers can provide the following information so that we can evaluate the appropriate product and configuration for the project:
- Required connector type or model
- Cable size
- Rated voltage
- Rated current
- Required certification
- Application
- Connection configuration
- Estimated order quantity
- Existing mating connector information
For OEM and customized requirements, contact our team with your technical and purchasing information.
Treasol Company History
Treasol was founded in 2009 in Dongguan, Guangdong, China. Our development has focused on photovoltaic connection products and related solar connection solutions.
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2009 — Company founded in Dongguan, Guangdong, China
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2013 — Photovoltaic connector business expanded and TÜV Rheinland certification obtained for applicable PV connector products
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2018 — Product portfolio expanded with solar wiring harness solutions
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2020 — Manufacturing capabilities and production capacity expanded
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2022 — Product range extended to include photovoltaic connection products rated up to 1500 V DC for applicable models
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2024 — Continued investment in research and development for photovoltaic connection products and solar connection solutions
Frequently Asked Questions
Common questions from installers, distributors and EPC contractors evaluating Treasol as a photovoltaic connector supplier.
What does Treasol manufacture?
Treasol manufactures photovoltaic connection products including PV connectors, MC4-compatible connectors, branch connectors, fuse connectors, diode connectors, PV junction boxes and solar wiring harness assemblies.
Is Treasol a PV connector manufacturer?
Yes. Treasol is a photovoltaic connector manufacturer based in Dongguan, Guangdong, China. The company develops and manufactures PV connection products and related solar connection solutions.
Does Treasol manufacture MC4-compatible connectors?
Yes. Treasol manufactures MC4-compatible PV connector products. However, "MC4-compatible" should not be interpreted as universal interchangeability between connectors from different manufacturers — physical fit alone does not establish electrical, mechanical or certification compatibility. The specific mating combination should be verified against the applicable technical documentation and project requirements.
What certifications are available for Treasol PV connectors?
Depending on the specific product and certification scope, Treasol products are available with TÜV Rheinland, UL, CE and RoHS-related certification or compliance documentation. Customers should always verify the applicable certificate and technical documentation for the exact product model.
Does Treasol provide OEM PV connector solutions?
Yes. Treasol provides OEM and customized photovoltaic connection solutions for applicable projects, including connector configurations, cable assemblies, product labeling and packaging requirements.
What information should I provide when requesting a quotation?
Connector type or product model, cable size, required voltage and current, certification requirements, application, connection configuration, estimated quantity and existing mating connector information. Providing these details helps our team identify the appropriate product configuration and technical requirements.
How can I verify whether two PV connectors are compatible?
Do not rely only on physical fit. Compatibility should be evaluated using the specific connector models, manufacturer documentation, electrical ratings, mechanical interface, environmental requirements and applicable certification. For cross-brand mating applications, consult the relevant manufacturers and verify that the specific connector combination is approved or otherwise suitable for the intended application.
Where can I find Treasol product specifications?
Detailed technical specifications are provided on the individual product pages. Because electrical ratings, cable sizes, protection ratings and certification scopes vary between models, the specification of the exact product should be used for technical evaluation and purchasing.
Does a 1500 V rating mean two PV connectors are compatible?
No. A 1500 V rating describes the electrical rating of a connector under specified conditions. It does not by itself establish compatibility with another connector. When different connector manufacturers are involved, the specific mating combination should be verified using manufacturer documentation, applicable standards and project requirements.
What does MC4-compatible mean?
MC4-compatible refers to a connector designed around an MC4-type connection interface. It should not be interpreted as universal interchangeability with every connector sold under the MC4-compatible description. The specific mating combination should be verified before installation.
What should be checked before mating two PV connectors?
Check the exact connector models, manufacturer documentation, electrical ratings, mechanical interface, cable compatibility, environmental requirements and applicable certification or installation requirements. Physical fit alone is not sufficient to establish compatibility.