1746949

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Terminal Blocks - Headers, Plugs and Sockets

Terminal Blocks, Headers, Plugs and Sockets 1746949 are electrical products designed to quickly connect and disconnect electrical signal and power circuits. Terminal blocks are a necessity in almost every application, they allow easy connections and disconnections of electrical cables, perfect for a wide range of applications including, repairs, maintenance, prototyping and development. In most applications, terminal blocks are integral to the application and are installed directly to the application or other support structure, thereby providing a robust system.

In most cases, terminal blocks offer a reliable and cost effective solution to connection and disconnection problems associated with wiring multiple circuits. The potential application fields of terminal blocks are therefore incredibly wide and range from industrial automation processes through to the simple connection of domestic appliances.

The shapes and sizes of the available terminal blocks vary greatly depending upon the intended duty and the number of circuits to be connected or disconnected. Basic terminal blocks are offered in 3 pole and 9 pole versions with additional larger versions available for larger numbers of poles. The range of additional products, such as interface modules, Power and Signal distribution blocks, busbars and feed through blocks, increases with the complexity of the application. Further, outside wiring accessories are available to provide a complete solution for whatever the intended application.

Typical terminal block construction consists of four major parts; the body, the insulation displacement connector, the plug, and the mounting brackets. Although this basic design is common, variations do exist to suit the requirements of the application.

The body of a typical terminal block is a solid, molded plastic housing which can usually be found in varying dimensions to suit the application. They are also usually rated for a defined voltage and current or amperage rating, depending on the application requirements. The IDC is connected to the body of the terminal block and is used to receive the cabling. The body contains contact elements which connect the wire to the terminal block’s body and associated contacts.

The insulation displacement connector is responsible for providing an electrical connection between the cable and terminal element. Through a V-shaped shaped blade, cables are cut, stripping away the insulation and electricity is conducted through the conductor. The v-shape of the IDC also acts as a strain relief and helps to prevent the conductor from becoming loose. The plug is used to secure the cable in the terminal block and through its plug operation can be applied quickly and easily.

Finally, the mounting brackets are employed to keep the terminal block steady and secure. They are the physical backbone of the terminal block, preventing movement when pressed into a panel.

To address more specific workloads, shielded terminal blocks can block electromagnetic radiation from outgoing wires that might interfere with other equipment. Other terminal blocks in the same family have additional high-level capabilities such as additional number of poles, voltage ratings higher than 300 volts, anti-tampering, gas-tight or water-resistant designs, advanced insulation or safety designs.

In summary, terminal blocks are a quick and convenient way to bridge between devices, computers, and power sources in a wide range of applications. In many cases, they provide the best mechanical connection for your devices and systems, and the cost savings of using terminal blocks compared to other connection methods can really add up.

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