Description :   3，10，20，30，50，100inch 4MM2 Solar Extension Cable Wire W\/Male Female MC4 Connector  100% New and high quality， it is flexible， easy to strip. Suitable for solar power station， pv connector and pv junction box.  Double insulation jackets，all-weather adaptability. Good abrasion resistance，excellent softness and stripping performance. High current carrying capacity.  Specification :   MC4 Connector :  Model : RO-1 Maximum working current : 25A (4mm2) Maximum working voltage : DC1000V Contact resistance : ≤ 0.5mΩ Insulation resistance : > 500MΩ single-core cable cross-section : 4mm2 Cable OD Range : Φ5mm ~ Φ 7mm Ambient temperature : -40 \u2103 ~ + 105 \u2103 Protection class : IP67  Safety class : \u2161 Pollution degree : 2 Operating temperature : -40 ~ +85 \u2103 Insertion force : ≤ 50N Withdrawal force : ≥ 50N Insulation Material : PC， black Contact : Copper cn， sn Nickel Flammability rating : UL94-VO Terminal Connection : Crimp  Cable :  Sectional area : 4.0mm2(12AWG equivalent) Rated Current : 55A Rated Voltage : 600V\/1800V (AC\/ DC) Ambient Temperature Range : -40 ~ +125 \u2103 Strand Design(No.xø(mm)) : 56 \/0.30 Connector Type : MC4 Conductor diameter : 2.06mm， Outer diameter : 6.05mm Available Cable Length : 3，10，20，30，50，100inch  Package included :   1 x 4MM2 Solar Extension Cable With MC4 Connectors Male And Female  Details pictures :