Sollean Engineering specializes in the manufacturing of certified PV split junction boxes for solar systems. TÜV Rheinland certified, IEC 62790 compliant. High-performance, Made in India.
The figures that define a Sollean junction box.
TÜV Rheinland certified. IEC 62790 compliant. Built in Gurgaon.
Sollean Engineering designs and manufactures Photovoltaic split junction boxes that connect, protect, and extend the life of every solar panel they sit on. Available in 25A, 30A & 35A variants — engineered by our in-house thermoplastic injection moulding capability and certified to international standards.
Industry-certified photovoltaic connectivity solutions engineered to meet the quality, safety, and durability standards demanded by modern solar manufacturers.
Quality is embedded into every stage of our manufacturing process — from precision thermoplastic injection moulding to final product validation. Each PV Split Junction Box is built in our Gurgaon, India facility and validated against IEC 62790 standards before it leaves the line. TÜV Rheinland certification and rigorous in-house quality controls stand behind every unit, so manufacturers can specify Sollean with confidence.
HOTSPOTS & DIODE FAILURE · INGRESS & CORROSION · CONNECTOR RESISTANCE
Three risks that compromise panel performance over a 25-year operating life.
Substandard bypass diodes can overheat under partial shading conditions, creating hotspots that damage solar cells and significantly reduce module lifespan. Poor sealing allows moisture and contaminants to enter the junction box, leading to corrosion, ground faults, and premature system failures. At the same time, loose or low-quality terminals increase contact resistance, causing power losses, reduced efficiency, and a higher risk of electrical arcing across large scale installations.
Certified, precise, locally manufactured, and engineered for 25-year performance.
None of these three pillars stand alone. Certification without precision moulding is just paperwork; local manufacturing without IEC compliance is just proximity. Sollean ties all four together — which is the actual reason manufacturers specify us, not any one credential on its own.
TÜV Rheinland Certified
Tested and certified to IEC 62790 — the international benchmark for PV junction box safety, durability, and electrical performance.
Make In India
Made in India, supporting domestic solar manufacturing and helping module makers meet Domestic Content Requirement (DCR) and PLI scheme requirements.
0.5 Million Junction Boxes
Manufacturing capacity of 500,000 PV junction boxes per month — demonstrating high-volume production capabilities, operational efficiency, and a reliable supply for the global solar industry.
Choose the variant that matches your module power class.
Every Sollean junction box — 25A, 30A, or 35A — is built to the same uncompromising standard: injection-moulded in-house, tested to IEC 62790, and backed by TÜV Rheinland certification. Whichever variant matches your module's power class, you get the same electrical performance, environmental protection, and long-term reliability, manufactured start to finish in Gurgaon, India.
Speak with a Sollean engineer. Quotes within four business hours.
Share your module specifications, target volume, and certification needs. We will return a tailored proposal with technical drawings, sample availability, and full IEC 62790 documentation.
TÜV Rheinland is the world's most recognised third-party PV certifier.
IEC 62790 specifies safety requirements and tests for junction boxes used on photovoltaic modules. TÜV Rheinland verifies that our products meet every clause — from impact resistance and IP65 / IP68 sealing to thermal cycling and partial discharge — so module manufacturers can specify Sollean with confidence and pass their own bankability audits.
PV Junction Box
5 min read
PV Junction Box: Purpose, Working, Components, and How to Choose the Right One.
Learn what a PV Junction Box is, how it works in solar panels, its main components, bypass diodes, types, and why it is important for solar safety and performance
Full Read
STANDARDS & CERTIFICATIONS
7 min read
IEC 62790 Explained: What Solar Module Manufacturers Should Know
IEC 62790 defines important safety and testing requirements for photovoltaic module junction boxes. Here is what the standard means for manufacturers, component suppliers and solar module reliability.
PRODUCT GUIDE
6 min read
25A vs 30A vs 35A PV Junction Boxes: Which One Should You Choose?
The right junction box's current rating depends on the electrical characteristics of the solar module. Understand the difference between 25A and 30A configurations before specifying your next PV connectivity solution.
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