These Y-Branch MC4 compatible connectors are designed to connect solar panels between solar panels and extension, which is a perfect solution for connecting multiple panels in parallel in a solar field, and is usually used in parallel applications. Features: Y-Branch MC4 solar panel cable connectors, suitable for PV system. The O-ring is perfect for sealing water and dust to prevent corrosion. Compatible with PV cables with different insulation diameters. With excellent aging resistance and UV resistance, it can be used in harsh environment. High and low temperature resistance and flame retardant. High current and high voltage load capacity. Quick and easy assembly and simple removal of plugs without the help of additional instrument. Great solution for parallel connection of multiple panels together in a solar field. Features: Type: MFF+FMM/MFFF+FMMM/MFFFFF+FMMMM (Optional) Insulation material: PPO Rated current: 30A! Rated voltage: 1000V DC Test voltage: 6KV (50Hz, lmin)! Typical contact resistance: 5m Contact material: Copper, tinned Protection degree: IP67 Safety degree: Flame class: UL94-V0 RTl material: 110 C Ambient temperature range: -40 C ~ + 85 C Wire size: 2.5mm / 4mm / 6mm Package Weight: 124g-338g / 4.4oz-11.95oz! Package List: 1 * Pair of MC4 Y Branch Connectors