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Terminal Blocks - Wire to Board

Terminal blocks play an important role in connecting and distributing power throughout various applications. Typically, they are used to hold a wire in place, while it connects two separate circuits. In the field of 1990795 applications, they have multiple usages, ranging from providing general wiring to providing grounding, overload protection, and/or electrical isolation.

Types of Terminal Blocks

When it comes to 1990795 applications, there are two primary groupings of terminal blocks to consider: wire-to-board terminal blocks and wire-to-wire terminal blocks. Both of these provide an effective point-to-point connection between components, as well as ensuring a safe electrical connection.

Wire-to-Board Terminal Blocks

Wire-to-board terminal blocks are often used in 1990795 applications, as they provide a full range of connections between a wire or set of wires, and a printed circuit board or other electrical component. These terminal blocks are composed of an insulating material that includes two distinct parts: a header for mounting to the board and a receptacle for mounting the wire or wires. A wide variety of designs exist that enable the wire-to-board terminal block to be mounted in different positions on the board.

When it comes to the wiring side of wire-to-board terminal blocks, many will make use of crimp terminals, while other types use solderless, simple-twist, or quick-fit terminals. Some these types will also feature a clip or pin that fastens the wire into the terminal block, while others are held in place by compression. Depending on the type of connection, there are design considerations for either option.

Working Principle

The primary purpose of wire-to-board terminal blocks is to ensure that the electrical connection is secure and protected from vibration, shock, or any other external forces that may impact the integrity of the system. To strengthen this connection, the terminal blocks have a spring-loaded mechanism to hold the wire or wires securely in place. This feature is commonly known as a pre-load mechanism.

In order to ensure proper functioning, the pre-load feature of the terminal blocks must be tightened to secure any electrical connections. This is done by pushing the wire into the terminal block as far as possible and then tightening the screws that are used to adjust the spring force. Once this is done, the connection is ready for use and will prevent any sudden disconnections.

In addition to the pre-load mechanism, many wire-to-board terminal blocks will also have strain relief fittings. These are used to protect the wires from any external forces that may be exerted by the wires, such as pulling or stretching due to a change in temperature. The strain relief fittings also help to shield the wire from any physical damage caused by sharp edges.

Conclusion

Wire-to-board terminal blocks are an important and essential component of 1990795 applications. Not only do they improve the overall electrical connections, they also help protect the wires from any external damage. By understanding the working principle of these terminal blocks, and how they can be used to make reliable connections, engineers can more effectively plan and install them for maximum effectiveness.

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