The main function of the junction box is to connect the internal solar cell circuit of the module with the external line through the positive and negative cables of the junction box to transmit the electric energy. The junction box is glued to the back plate of the module with silicone. The junction box is equipped with bypass diodes to protect the battery strings. The design requirements of the junction box are very high, involving technologies in many fields such as electrical design, mechanical design and material science.
The junction box is mainly composed of three parts: the junction box body, cables and connection terminals. The junction box body is generally composed of the following parts: base, conductive parts, diodes, sealing ring, sealing silicone, box cover, etc.
Material:PPO plastic +PV wire
Net weight:98.6g/sets
Specification:Conventional thread length 30cm (customizable thread length)
Certificate:CE/ROHS
| Product Name | ONESUN ML06A(20A) | ONESUN ML06A(25A) | ONESUN ML06A(30A) |
| Rated voltage | 1500V | 1500V | 1500V |
| Insulation material | PPO | PPO | PPO |
| Conductor material | Copper tin-plated | Copper tin-plated | Copper tin-plated |
| Ambient temperature | -40℃~+85℃ | -40℃~+85℃ | -40℃~+85℃ |
| Product temperature | -40℃~+125℃ | -40℃~+125℃ | -40℃~+125℃ |
| Security class | DCII | DCII | DCII |
| Waterproof grade | IP68 | IP68 | IP68 |
| Contact resistance | ≤0.5mΩ | ≤0.5mΩ | ≤0.5mΩ |
| Cable Specifications | 4mm²、6mm² | 4mm²、6mm² | 4mm²、6mm² |
| Cable length | Regular 30cm(customizable length) | Regular 30cm(customizable length) | Regular 30cm(customizable length) |
| Waterproof method | Potting glue | Potting glue | Potting glue |
| Glue filling amount | 8g*3 | 8g*3 | 8g*3 |
| Rated current | 20A | 25A | 30A |
| Flame retardant rating | UL94-VO | UL94-VO | UL94-VO |