Mini-Clamp Connectors 3M Mini-Clamp Connectors provide easy, labor-saving, and reliable IDC termination with no special wire preparation. The connectors are designed to provide connection reliability and cost performance in I/O applications commonly found in a wide range of sensor control systems, including factory automation and industrial controls. The connectors feature a semi-transparent cover, color-coded covers for proper wire usage, wire alignment, and retention built into the cover.