This category includes terminal blocks designed for connecting wires and cables, featuring various configurations such as pin heads, header blocks, and interface modules. It excludes photovoltaic connectors, circular and rectangular connectors, card edge connectors, board-to-board connectors, crimp and solder terminals, backplane connectors, flexible flat cable (FFC) and flexible printed circuit (FPC) connectors, D-sub connectors, and coaxial RF connectors.