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Terminal blocks - Headers, Plugs and Sockets are a form of electrical connector used to arrange, connect and secure wires. They help to provide an electrical connection between two or more parts. Terminal blocks use a variety of connection methods, such as tab connections, insertion contacts and easy-to-attach isolators. They are commonly used in industrial applications where high current is needed.

Terminal blocks come in many different shapes and sizes. The most common type is the header-and-plug assembly, which consists of a header and a plug. The header is a block that is mounted onto a panel. The plug is then attached to the header using a suitable screw or nut and bolt. The header and plug are usually made of plastic or metal. Depending on the purpose, different classes of terminal blocks are available, such as insulation displacement contact (IDC) and screw-clamp-type terminal blocks.

The two main functions of terminal blocks are to facilitate the assembly of wires and to provide electrical insulation between them. When the plug is inserted into the header, the two parts are mechanically connected by the screw. The electrical connection is achieved when a conductive surface of the header is in contact with a conductive surface of the plug, thus creating an electrical channel. The insulation of the electrical connection is achieved by the use of a non-conductive material, which is usually plastic or ceramic.

Terminal blocks can be used in many different types of applications. They are often used in electrical wiring, testing and monitoring equipment, electronic components, communications equipment, plumbing, medical equipment and many other applications. The working principle of a terminal block is simple: the header provides an electrical connection to the plug, while the insulation material between the two provides electrical insulation.

Terminal blocks are available in a variety of shapes, sizes and materials. When selecting the appropriate terminal block, the user should consider the type of application, the amount of current needed, the type of connection and the environmental conditions, such as temperature and humidity. Additionally, the user should ensure that the terminal block is suitable for the intended application and that the required insulation material is available.

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