Characters and Advantages of JB4A/JB4B Solar Junction Box


LEADER PV Solar Junction Boxes provide more protections for photovoltaic system. We are using 100% raw SABIC PPO(PX9406P),and export to many countries, such as Germany ,Korea, Japan, Turkey….

The solar junction box character and advantage are as following:


Box  Material:SABIC PPO(PX9406P)(f1) for open-air engineering plastic ,weather fastness is good,Flame Class:UL94V-0


Metal  Material:(C1100) Pure copper,Cu+Ag CuAg:≥99.90 %. Their conductivity and conductivity for heat are good.


Seal  Material:Dow Corning flame resistant silicone,it is good at weather fastness、antivibration、moisture resistance、anticorrosive and thermostability.


Diode:Diode made by Diotec of Germany for PV module. Their electric property is better than other similar products, especially is better at heavy current and high voltage.


Connection of  ribbons:Soldering or clamping is reliable for ribbons. Contact areas is larger and contact resistance is smaller.


Connection of Diodes:Contact areas of Diodes with metals are larger, thermolysis is good.


Assembly of cover with base:Cover connect with base to use spiale. They are convenient for opening and closing cover.

Key pillars for shining success

As a manufacturing and solutions-driven company, Leadergroup has supported some of the world’s largest and most challenging solar power plants. From consulting and design, construction to maintenance, our global team of PV experts will ensure your system is optimally connected for maximum efficiency, safety and profitability.

We connect solar power for a sustainable world

The success of any solar photovoltaic (PV) plant comes down to reliable, efficient and long-term performance. With Leadergroup Renewable Energy as your partner, you benefit from our high precision solutions and decades of experience harnessing solar energy.

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