20A in-line diode connector solar panel cable connectors. Practical and easy connector used between solar panel and switch box to prevent reversal of current. Contacts for the connector are copper, coated with tin for improved solder adhesion. Each end nut includes rubber bushings for secure sealing. This connector is rated IP67. IP (Ingress Protection) ratings: the first numeral indicates dust resistance, the second numeral indicates water resistance. Specification: Connector Material: PPO, PC Degree of protection: IP67 Rated current: 20A Flame class: UL94-V0 Rated voltage: 1000V (TUV) & 600V (UL) Test voltage: 6kV (50Hz, 1min) Insertion force / withdrawal force: ≤ 50N / ≥ 50N Pin dimensions: 4.0mm Connecting system: Crimp connection Contact resistance of plug connector: ≤ 5mOhm Temperature range: -40°C to 85°C Contact material: Copper, tin plated Maximum operating temperature: 110°C Insulation material: PPO Package: 4 x PV diode connectors Note: Light and display differences may cause slight variations in color between the image and actual item. Measurement allows an error of +/- 1-3cm.