Reliable solar connection solutions with TÜV, UL, CE and RoHS certifications for residential, commercial and utility-scale photovoltaic projects worldwide.
TreAsun specializes in manufacturing photovoltaic connectors, including MC4 compatible solar connectors, fuse connectors, diode connectors and customized PV cable assemblies. Our connectors are engineered for residential, commercial and utility-scale solar systems, delivering secure electrical connections with proven durability in outdoor environments.
Complete your photovoltaic system with these solar connection solutions
Solar connectors are fundamental components in photovoltaic systems, responsible for linking PV modules, cables and inverters into a complete power generation circuit. In any solar installation, panels produce DC electricity that must travel through cables to reach inverters, battery banks or grid connection points. Every connection along this path relies on a connector that maintains secure electrical contact while resisting environmental stress.
MC4 compatible connectors follow widely adopted PV industry connection standards, featuring a snap-lock mechanism, low contact resistance and robust weather sealing. Unlike general-purpose electrical connectors, solar connectors are purpose-built for decades of outdoor exposure—withstanding UV radiation, rain, temperature swings, dust and salt spray without degrading.
TreAsun manufactures these connectors from high-grade engineering plastics and tin-plated copper contacts, backed by precision tooling and strict factory QC. The result is a connector that performs consistently across the full service life of a PV system.
TreAsun solar connectors carry TÜV Rheinland, UL Listed, CE Marking and RoHS compliance certifications backed by independent testing and factory audits.
Connector housing and contact geometry engineered for standard MC4 connection systems. The locking mechanism provides an audible click on engagement for immediate confirmation of a secure mate.
Multi-stage sealing with silicone O-ring and compression gland prevents water and dust ingress. Suitable for heavy-rain regions, coastal salt spray and desert sand environments.
UV-stabilized PPO body with UL94-V0 flame rating and tin-plated copper contacts resist degradation, thermal cycling and mechanical stress over 25+ years of solar service life.
In-house mold fabrication, injection molding and automated crimping in Dongguan, China. OEM and ODM programs for distributors, EPC contractors and solar installers worldwide.
MC4 compatible connectors deployed across residential, commercial and utility-scale PV projects worldwide
TÜV Rheinland, UL Listed, CE and RoHS certifications mean our connectors have passed independent laboratory testing and regular factory audits—not just self-declared compliance.
Mold design, injection molding, contact stamping and assembly are all done under one roof. This vertical integration gives us direct control over quality, lead times and cost.
We provide OEM branding, custom packaging, tailored cable lengths and pre-assembled cable sets according to project specifications. Engineering support is available for non-standard requirements.
With established export procedures, multilingual documentation and reliable logistics partners, we serve solar distributors and installers across Europe, Asia, the Americas and Africa.
Five simple steps to ensure safe, long-lasting PV connections during system assembly
Select correct PV cable size—2.5mm² to 16mm²—according to system design specifications.
Remove cable insulation to the specified strip length without damaging the copper conductor.
Use a professional PV crimping tool to secure the metal contact terminal onto the conductor.
Insert crimped contact into connector body and tighten the cable gland until fully sealed.
Mate male and female connectors—an audible click confirms the locking mechanism is engaged.
Yes. TreAsun MC4 compatible solar connectors follow widely used PV connector standards with matching mechanical and electrical interfaces. They connect reliably with standard MC4-type connectors found in most solar installations.
Our solar connectors are certified TÜV Rheinland, UL Listed, CE Marking and RoHS Compliant. Certificate documentation is available upon request for project qualification.
Yes. TreAsun PV connectors are rated IP68, meaning they are dust-tight and protected against continuous water immersion. This rating is suitable for outdoor solar installations in all climate zones.
Standard models support 2.5mm², 4mm² and 6mm² PV cables. 10mm² and 16mm² versions are available for higher-current applications. Contact us for specifications on larger cable sizes.
Yes. We offer OEM manufacturing including custom branding, private labeling, tailored packaging and pre-assembled cable sets. MOQ and lead time depend on the customization scope—contact our sales team with your requirements.
Contact TreAsun for factory pricing, free samples, OEM service and technical support. We respond within 24 hours to all inquiries.
