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Terminal Blocks - Headers, Plugs and Sockets

Terminal blocks are components that hold and/or transfer electrical currents between two or more electrical devices, such as between a battery and an application device. They are commonly used in industrial, automotive, and consumer electronics applications. Terminal blocks can simply be thought of as an electrical version of a hose clamp. With a hose, they serve to create a connection between two hoses by compressing the hose. Likewise, terminal blocks serve to create an electrical connection between two devices, by compressing the wires.

In the terminal block industry, 1821245 parts are considered to be a type of terminal block. These terminal blocks are known as headers, plugs and sockets, and are used to provide an electrical connection between a wire or ribbon cable and an application device. Depending on the application, these three different components can be used in various combinations to create a reliable electrical connection.

Headers

Headers are usually made of metal and feature multiple angled pins connected to a wire or ribbon cable and inserted into a printed circuit board. They are commonly used in applications where a connection needs to be made between the circuit board and the device itself. In an industrial setting, headers are also used for quick electrical prototyping and testing.

Plugs

Plugs, on the other hand, are used when a connection needs to be made between two wires or a wire and an electrical device. Plugs feature two or more pins that are press-fit or crimped together, making a more reliable and secure connection than a bare wire. In industrial settings, they are often used to make connections between electrical equipment and wire harnesses.

Sockets

Sockets are also used to make connections between two or more wires or between a wire and an electrical device. Although similar to plugs, sockets are designed to be plugged into another device, and are therefore easier to disconnect and reconnect than plugs, making them ideal for applications where a connection needs to be made and then disconnected on a regular basis.

Working Principle

Regardless of the type, all terminals blocks work on the same basic principle. A connection is made by compressing two or more wires onto a set of pins mounted on the terminal block. This connection is usually made by either soldering or crimping the wires to the pins. The pins, in turn, ensure a reliable electrical connection between the two devices or wires.

Application Fields

1821245 terminal blocks are most commonly used in industrial, automotive and consumer electronics applications. In the industrial setting, these components are used to make connections between electric motors and other industrial equipment, while in the automotive field they are used to make connections between a vehicle’s wiring harness and its various components. In the consumer electronics field, 1821245 terminal blocks are used in the manufacture of electronic devices such as TVs, radios, stereos and other audio-visual equipment.

In addition to their use in these industries, 1821245 terminal blocks are also used in telecommunications and other data communications applications. They are often used to make connections between telephone systems, routers and other data equipment. They are also used to make connections between telecommunications and data cables, including coaxial and Ethernet cables.

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