1745852

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Terminal Blocks - Headers, Plugs and Sockets

Terminal blocks are a simple and effective way to connect circuitry and other electrical components. They provide an electrically secure connection and come in a variety of shapes, sizes and styles to suit a range of applications. The two most common types of terminal blocks are headers, plugs and sockets. Let\'s look at each in more detail.

Headers

Headers are designed to provide a connecting point to devices. This is generally achieved using spring loaded contacts, so they are well suited to applications where frequent re-attachment is expected. Commonly referred to as ‘block terminal’ or ‘terminal strip’, headers are the most basic type of terminal block. They have two rows of male or female contacts and can be used for circuit wiring, electrical relays, fuseblocks and more.

Plugs

Plugs are compact, self-contained terminal blocks designed to create a reliable connection between two pieces of insulated wiring. The most common type is the pluggable terminal block, which consists of two insulated blocks held together by an insulated clip. Wire is placed between the blocks, which are then locked in place to form the electrical connection. Plugs are generally found in single- and double-level formats. As with headers, they are well suited to applications in which frequent re-attachment is anticipated.

Sockets

Sockets, also known as PCB connectors, are designed to plug into an integrated circuit board. This makes them well suited to applications where a permanent connection is needed. A single-contact socket includes two metal contacts that fit into the board’s contact points, and a plastic body that makes a secure connection. Two, three and four-contact sockets are also available, and many can be stackable, allowing for multiple connections in a small footprint.

1745852 application field and working principles

The 1745852 application field is broad, and includes a wide range of industries that require electrically secure connections. Headers provide a simple connection suitable for re-attachment, plugs offer a flexible compact block and sockets provide a reliable permanent connection. The working principles are largely the same across all three types; electrical current is provided through the connection of two pieces of insulated wiring.

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