QC11 is a custom connector used for heavy and highly specialized applications. It features a large, rectangular shape and larger size compared to other connectors. The QC11 is known for its superior corrosion resistance, vibration resistance and mechanical strength. It is commonly used in harsh industrial, extreme temperature, and military applications. The QC11 comes in both 4-pin and 8-pin configurations and is designed to easily disconnect and reconnect without special tools or equipment. It is often used to interconnect power, data, and control cables in temperatures ranging from -40 to +105 C. It is available in many different materials such as metal, resin, and polymers.