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Terminal strips and turret boards are widely used in various types of electrical equipment such as control panels and industrial automation systems. They provide an easy and efficient way to connect and disconnect wires between components, and to switch power between multiple connections. This article explains the application fields and working principles of these two types of electrical connection systems.

Terminal Strips

Terminal strips are used for connecting low-voltage, low-current line-level signals. They are typically available in two varieties, soldered and screwed strips. The soldered type consists of a flat strip of metal with a pre-drilled hole in which a wire or device is inserted. The wire is then soldered to the strip to establish a regulated connection. Screwed terminal strips on the other hand, offer a more secure connection since a screw is used to hold the device in place. Screw terminals also have the advantage of allowing for quick changes in wiring since a device can be removed or added without having to re-solder anything.

One of the main advantages of terminal strips is that they can be easily customized. Strips come in a variety of sizes and shapes, and the number of contacts can vary widely. This makes it easier to configure the strip for a particular application, with minimal effort. In addition, terminal strips are relatively inexpensive and simple to install, making them a popular choice for many electrical technicians and engineers.

Turret Boards

Turret boards are similar to terminal strips, but are designed for higher-voltage and higher-current applications. They use a different type of connection system, typically incorporating a spring clip and securing nut to hold the wires in place. This type of connection system is more secure than the soldered contact system used for terminal strips, and also allows for greater flexibility in terms of changing the device or wiring arrangement. Turret boards are more expensive than terminal strips and require more sophisticated tools for installation, but they are preferred in applications requiring more robust connections.

Turret boards are also commonly used in industrial settings, such as in the automotive industry where they are used to connect wires between various components of a vehicle. In addition to being more secure, they are also able to handle higher current loads, making them suitable for high-powered applications. They are also preferred in applications with greater environmental extremes, such as high-temperature environments.

Conclusion

Terminal strips and turret boards are two of the most commonly used electrical connection systems. Each system has its own advantages and disadvantages, so it is important to consider the specific requirements of the application before making a decision. Terminal strips are relatively inexpensive and easy to configure for specific applications, while turret boards provide more robust connections and are preferred for high-power and extreme temperature environments.

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