Description:    MC4Y-B2 Solar Panel Y Type 1 to 2 MC4 Connectors M-FF and F-MM Branch Cable MC4 Solar Panel Connector  Features:   For connecting solar panels. Compatible with MC4 connector. Sturdy and durable. Cable length: 32cm Working current: 20A(4mm²)、 30A(6mm²) Withstand voltage: DC1000V Contacting resistance: <2 m Insulation resistance: > 500M Suitable single core cable section: 2.5mm²、 4mm²、 6mm² Cable outer diameter: 5mm - 7mm Ambient temperature: -40~ + 105\u2103 Protection class: IP67 Safety class: II Shell material: PPO Contacting material: Copper、 tin plated Terminal connecting method: Pressure Welding  Package included:  1 x MC4Y-B2  MC4 Solar Panel Connector  Details pictures: