The insulated enclosure of solar junction box is made of high quality PPO material.Polyphenylene Oxide(PPO) is a kind of high performance engineering plastic .It is widely used because of its good electrical insulation properties, high impact strength, high heat resistance, effective protection from UV radiation, environmentally friendly processing and recyclability.
The solar junction box is used internally open U-shape Conductor ,Copper tin-plated conductor can greatly improve the corrosion resistance, conductivity and weldability, ensure the long-term reliable operation of junction box in harsh outdoor environment, and enhance the overall beauty of the connector.
MC4 male and female plug of junction box has a high quality rubber seal ring placed on, which can effectively prevent moisture and dust from penetrating into the joint gap and achieve IP68 protection level. Even in the rain and snow weather, wet environment for a long time, its waterproof performance can be reliably guaranteed.
The MC4 connector male and female plug has an embedded self-locking design to ensure a solid and reliable connection and is not easy to loosen, improving the stability and reliability of the system. This self-locking system ensures that the connectors do not loosen or break in vibration and impact environments, providing a long-term stable connection to the system.
The sealing glue of junction box is usually made of high performance polymer materials such as epoxy resin and polyurethane. After curing, the potting adhesive forms an integral "protective shell" to protect the internal electronic components, such as terminals, diodes, capacitors, etc. Potting adhesives play a key role in improving the reliability of photovoltaic junction boxes, extending their service life and ensuring safe operation.
The solar junction box have multiple connection slots supports multiple solar panels in parallel, adopts general interface standards, such as MC4 and H4, and is compatible with most photovoltaic modules and cables. Wall-mounted, guide rail and other installation methods can be selected according to the actual situation, improving the assembly flexibility of the system.
Reliability: Carefully designed and high quality manufactured to ensure long-term performance and stable operation.
Electrical performance: 1500V rated voltage, low contact resistance (≤0.35mΩ) and high current transmission capacity, improve system efficiency and energy utilization.
Protection level: IP68 protection design, waterproof, dustproof, adapt to harsh outdoor environment, ensure reliability and long life.
Material selection: PPO insulation material has good weather resistance, tinned copper conductor provides good electrical conductivity.
Temperature range: Suitable for a wide temperature range, -40 ° C to +90 ° C ambient temperature, the connector itself can work normally from -40 ° C to +135 ° C.
Security level: Complies with DCII security level requirements to ensure system security and reliability.
Cable specifications: Suitable for 4mm² and 6mm² cable specifications.
Cable length: The standard length is 30cm, and can be customized as required.
Waterproofing method: using potting glue for waterproofing.
Filling amount of potting glue: Each junction box is filled with 8g×3 potting glue.
Rated current: Supports 20A/25A/30A rated current to meet product specifications.
Flame retardant rating: Through the UL94-V0 flame retardant rating certification, improve system safety.
| Product model |
MCJ15-1M1FPSN20A/25A/30A |
| Rated voltage |
1500V |
| Insulation material |
PPO material |
| Conductor material |
copper plated tin |
| Ambient temperature |
-40℃ ~ +85℃ |
| Product temperature resistance |
-40℃ ~ +125℃ |
| Security level |
DCII |
| Waterproof class |
IP68 |
| Contact resistance |
≤0.5mΩ |
| Cable specifications |
4mm², 6mm² |
| Line length |
regular 30cm(customizable length) |
| Waterproof method |
potting glue |
| Glue filling amount |
8g×3 |
| Rated current |
20A//25A/30A |
| Flame retardant grade |
UL94-VO |
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