What is an MC4 connector (male connector & female connector) and an MC4 extension cable (8ft, 15ft, 30ft, 50ft, 100ft)? If you're asking this question, you've probably noticed that most modern high power solar modules are manufactured with wire leads that have latching connectors on. . What is an MC4 connector (male connector & female connector) and an MC4 extension cable (8ft, 15ft, 30ft, 50ft, 100ft)? If you're asking this question, you've probably noticed that most modern high power solar modules are manufactured with wire leads that have latching connectors on. . High-Quality Materials for Maximum Efficiency:Crafted with premium PPO material and tinned copper conductor pins, these solar connectors ensure excellent conductivity and minimal energy loss. Designed for durability, they deliver reliable performance for long-term use in any solar power system. . This connector is specifically designed for connecting photovoltaic solar systems with high mechanical requirements and extreme weather conditions. Renogy Solar Cable Connectors are made with highest quality materials. This product includes a male and female connector. Description: The Male and Female Solar PV connectors, industry standard connectors, are. . Solar Connectors for Solar Panels Male & Female - 5 pairs is backordered and will ship as soon as it is back in stock. Free standard ground shipping on orders $49.