Certifications & Quality Standards
International Compliance and Rigorous Testing for Reliable PV Connection Components
TÜV Rheinland Certified
Treasun PV Technology solar connectors are tested and certified by TÜV Rheinland, one of the world’s leading testing, inspection, and certification bodies. Our products successfully comply with the rigorous requirements of IEC 62852 (international standard for connectors for DC applications in photovoltaic systems) and EN 50521 (European standard for PV connectors).
TÜV certification validates that our connectors meet the highest standards for electrical safety, mechanical durability, weather resistance, and long-term reliability. The certification process includes comprehensive testing for contact resistance, insulation resistance, dielectric strength, temperature cycling, damp heat endurance, UV exposure, and mechanical load testing.
This certification is recognized globally and is a prerequisite for PV components used in solar installations throughout Europe, Asia, and other international markets.
UL Listed (UL 6703)
Treasun photovoltaic connectors and junction boxes are UL Listed under the UL 6703 standard for connectors for use in photovoltaic systems. UL (Underwriters Laboratories) is a globally recognized safety certification organization headquartered in the United States.
UL 6703 certification ensures that our products meet stringent North American safety requirements for electrical performance, fire resistance, environmental endurance, and mechanical integrity. Testing procedures include current cycling, humidity freeze testing, pull-out force testing, and compatibility evaluation with various PV cable types.
UL Listing is essential for PV components installed in solar projects throughout North America and is widely accepted in many other markets that recognize UL standards for product safety and quality assurance.
CE Marking
All Treasun PV connection products bear the CE Marking, indicating compliance with European Union health, safety, and environmental protection requirements. The CE mark confirms that our products can be freely traded within the European Economic Area (EEA).
Our CE compliance covers relevant EU directives and regulations applicable to photovoltaic connection components, including the Low Voltage Directive (LVD) and Electromagnetic Compatibility (EMC) Directive. This certification demonstrates our commitment to meeting European regulatory standards and providing products that are safe for use in EU solar installations.
RoHS Compliance
Treasun products are fully compliant with the RoHS (Restriction of Hazardous Substances) directive, which restricts the use of specific hazardous materials found in electrical and electronic products. This compliance ensures that our PV connectors, junction boxes, and cables are environmentally responsible and safe for end users and installation personnel.
RoHS compliance covers restrictions on lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE). We maintain rigorous control over raw material sourcing and manufacturing processes to ensure continued compliance with these environmental standards, supporting our customers’ sustainability goals.
Quality Control & Testing Procedures
Rigorous multi-stage testing ensures every Treasun product meets international standards
Incoming Material Inspection
All raw materials including copper contacts, polymer resins, and cable conductors undergo thorough inspection and testing before entering the production line to verify material specifications and quality.
In-Process Quality Control
Continuous monitoring during injection molding, crimping, assembly, and cable extrusion processes ensures dimensional accuracy, proper contact force, and consistent manufacturing quality.
Electrical Performance Testing
Every production batch undergoes contact resistance measurement, insulation resistance testing, dielectric withstand voltage testing, and current carrying capacity verification per certification standards.
Environmental Endurance Testing
Products are subjected to temperature cycling (-40°C to +85°C), damp heat testing (85°C/85% RH), UV exposure aging, and salt mist corrosion testing to verify long-term outdoor reliability.
Mechanical Testing
Pull-out force testing, insertion/withdrawal cycle testing, impact resistance, and vibration testing confirm the mechanical robustness of connectors and junction boxes in field installation conditions.
Documentation & Traceability
Complete batch traceability with test reports, inspection records, and certification documentation available to customers for quality assurance and project compliance requirements.
