Terminal Blocks - Barrier Blocks

2-1437416-1 Application Field and Working Principle

Terminal blocks, also known as barrier blocks, are a type of electrical connector device used to safely join two wires or electrical components together. They provide a secure connection when designing semi-permanent systems, such as in circuit boards. Terminal blocks are designed to make it easier to troubleshoot circuits and replace components without having to completely re-wire an entire system. This article will focus on the most common types of terminal block connectors, their application fields, and working principles.

Application Field

Terminal blocks are most commonly used in a variety of applications, such as printed circuit boards, electrical and test equipment, automotive components, modules, and appliances. They are also used in the telecommunications industry, including electro-mechanical, fiber, and radio frequency applications. Terminal blocks are highly versatile and can be very convenient for a variety of applications since they reduce the time and cost of wiring and can be fitted to a wide range of electrical components.

Terminal blocks are also useful for providing safety and compliance with electrical codes, because they prevent accidental contact with hazardous live parts. As a result, they are often found in switchgear, control panels, and other industrial machinery. Terminal blocks also provide a secure and reliable connection in hostile environments with high temperatures, high moisture, dust, and other extreme conditions.

Working Principle

The basic design of a typical terminal block includes two metal terminals connected by an insulated body. The body is typically made of a synthetic plastic material, such as polycarbonate or nylon. These materials resist corrosion and provide a durable resistance to voltage, temperature, and other electrical hazards. Terminal blocks also typically contain insulation barriers that limit the amount of voltage that can pass from one terminal to another.

When two wires are connected to a terminal block, current flows in a single direction between the two terminals. This current flow is known as a “closed circuit”; and, depending on the type of terminal block, it can also be used to “load” power from one component or device to another.

In addition to carrying current, terminal blocks also provide protection against short-circuiting and against loose connections. As a safety measure, most terminal blocks also have protection screws that can be tightened to increase the amount of contact between the terminals. This helps ensure that the circuit connections remain tight and secure.

Conclusion

Terminal blocks are a key component in electrical engineering and are used in a variety of applications. They provide a secure connection that is reliable and straightforward, and are designed to provide maximum safety in the most hazardous environments. As a result, terminal blocks are an important part of virtually any electrical system.