Treasol · Dongguan, China
Solar Connector Manufacturer for PV Connection Products
Treasol manufactures MC4 type PV connectors, inline/diode fuse connector, PV junction boxes and wire harnesses in Dongguan, China. Product families cover 1000 V and 1500 V DC systems, with certificates and type-test reports supplied per model alongside the quotation.
- 15+ years manufacturing
- 50+ countries and regions
- 1500 V DC connector range
- TÜV Rheinland / UL documentation
Product range
PV connectors, solar cable, junction boxes and wire harnesses
Eight product families cover the DC connection points in a photovoltaic system. Each family has its own specification page and certificate scope; the exact model datasheet governs the final selection.
PV Connectors
Solar PV connectors
Solar Branch Connectors
Solar branch connector series
Solar Fuse Connectors
Solar fuse connectors
PV Diode Connectors
PV diode connectors
PV Junction Boxes
PV junction boxes
PV Wire Harnesses
PV wiring harness assemblies
Solar PV Cable
Solar PV cable
Tools & Accessories
Tools & accessoriesBy category
Solar cable and PV connector categories
Specific product terms are handled by their own category or landing pages. Use the links below to reach the relevant specification instead of a general catalogue.
By project type
Specify by project type
Start from the installation, then open the product lines it needs. Ratings and certificate scope are listed per model on the linked pages.
Utility-scale plants
1500 V DC strings with fuse connectors, trunk and branch harnesses, and cable connectors terminated in the field.
Commercial and industrial rooftops
Cable connectors, PV cable and branch connectors for string wiring on rooftop arrays.
Module and equipment makers
Junction boxes and panel connectors, plus OEM harnesses built to the module maker's drawing.
Technical and sourcing pages
Specification, manufacturing and supplier pages
Each page below addresses one decision in the sourcing process: interface compatibility, cable approval, harness drawings, process evidence, OEM configuration or distributor supply.
MC4 type connectors
Mating interface, rated values and the documented limits of MC4-type compatibility.
MC4-compatible solar connector specificationsSolar PV cable
H1Z2Z2-K construction, EN 50618 / IEC 62930 approval routes and conductor class.
Solar PV cable H1Z2Z2-K specificationsCustom wire harnesses
Built to drawing with defined lengths, breakouts, connector models and crimp records.
Custom PV wire harness assembliesManufacturing
Moulding, crimping, overmoulding and the inspection gates behind each production lot.
OEM programmes
1500 V connector configurations, private-label options and documentation scope.
OEM 1500 V PV connector programmeDistributor supply
Wholesale terms, stocked configurations and certification documents for resellers.
Solar connector supply for distributorsApproval basis
Standards and documentation supplied with a quotation
Cable standards and connector standards are separate documents, and a harness has to satisfy both. Standard editions and certificate scopes change; verify the current edition before issuing a tender.
| Scope | Standard or document | Where it applies |
|---|---|---|
| PV cable, IEC / EU projects | EN 50618:2014 (H1Z2Z2-K), IEC 62930:2017 | 1.5 kV DC, Class 5 tinned copper, cross-linked halogen-free insulation and sheath |
| PV cable, North America | UL 4703 PV Wire; NFPA 70 (NEC) Article 690 | 600 / 1000 / 2000 V ratings, 690.8 ampacity and 690.31 wiring methods |
| PV cable, China | NB/T 42073-2016, CQC certification rules | Copper and aluminium-alloy conductor approval routes follow separate CQC rules |
| DC connectors | IEC/EN 62852:2015 +AC:2019 +A1:2020; UL 6703 | Up to 1500 V DC, defined product family and defined mating partner |
| Installation | IEC 62548:2016 §7.3.9; IEC 60364-7-712:2017 §712.526 | Mated plugs and sockets of the same type from the same manufacturer |
| Harness acceptance | IPC/WHMA-A-620 | Crimp height, pull-force, micro-section and 100% electrical test records |
Certificate scope by product line
Certificates are model-specific. Request the certificate for the exact part number before specification; the documents below are held per product line.
| Product line | Approval basis | Certificate documents held |
|---|---|---|
| Cable and panel connectors | IEC/EN 62852:2015 +AC:2019 +A1:2020; UL 6703 | TÜV certificate for PV cable connectors |
| Fuse connectors | IEC 62852; UL 6703 for the fuse holder | UL certificate for PV fuse holder; TÜV certificate for solar fuse connector |
| Junction boxes | IEC 62790; UL 3730, where the model is listed | TÜV certificate for junction box |
| Wire harnesses | IPC/WHMA-A-620 assembly acceptance | Built from certified components; finished-assembly listing agreed per project |
| PV cable | EN 50618:2014; IEC 62930:2017; UL 4703 | Approval documents supplied per cable type and conductor size |
Certificate numbers, edition years and the models they cover are supplied with the quotation for the exact part number, not published as a general list. Finished harnesses are assembled from certified components; any finished-assembly listing is agreed per project.
The full document pack, including certificate scope, type-test reports and traceability records, is set out in the solar cable harness sourcing guide.
Company facts
Treasol at a glance
These figures describe the scope of the production programme, not a performance guarantee for any individual project.
Inside the plant
Made and tested in our Dongguan plant
Injection moulding, crimping, harness assembly and electrical testing take place in one plant in Dongguan, China. Terminals are bought in to drawing; moulding, assembly and final testing stay in-house.
See the production lines and test equipment at the Dongguan plant, or the process sequence and inspection gates behind each step.
FAQ
Frequently asked questions about PV connectors and wire harnesses
What does Treasol manufacture?
MC4 type PV connectors, H1Z2Z2-K solar PV cable, PV junction boxes, branch, fuse and diode connectors, custom wire harnesses and assembly tool kits, built in Dongguan, China.
Which connector and cable standards apply?
Depending on the destination market, EN 50618:2014 (H1Z2Z2-K), IEC 62930:2017, UL 4703 PV Wire and IEC/EN 62852:2015 with A1:2020 apply. Documentation is supplied per product model with the quotation.
Do you supply OEM and custom wire harnesses?
Yes. Harnesses are built to the customer drawing with defined cut lengths, breakout positions, connector models and crimp specifications. The OEM 1500 V connector programme is documented separately.
What is the rated voltage of the connector range?
The connector programme covers 1000 V and 1500 V DC product families. Electrical ratings, cable sizes and certification scopes vary by model, so the datasheet of the exact model governs the specification.
Can connectors from different manufacturers be mated?
No. IEC 62548:2016 clause 7.3.9 and IEC 60364-7-712:2017 clause 712.526 require mated plugs and sockets to be of the same type from the same manufacturer. Verify the specific combination against the project specification.
Which documents come with a quotation?
Certificate scope, type-test reports, construction sheet, crimp specification, in-process control plan, electrical test records, IP test report, dimensional drawing and traceability records, each with a revision number.
Technical reading
Standards references and buying guides
Request a quotation for PV connectors or wire harnesses
Send the connector model, cable size, rated voltage, target standard and estimated quantity. Datasheets, certificate scope and type-test reports are supplied with the quotation.