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Terminal Blocks - Barrier Blocks

Barrier block-based terminal blocks are used in many applications today. They provide simple, reliable, and easy-to-install solutions for modern electrical installations. By providing a reliable connection point for multiple wires in the same terminal block, barrier blocks enable the easy management of multiple wiring systems.

Barrier blocks offer a wide range of performance benefits compared to other types of terminal blocks. They feature a two-part design consisting of a base block and an upper block, which separates each conductor from the next. This ensures that stray currents don’t bridge between conductors and cause issues. The blocks also provide circuit protection and shield terminal strips from electric shocks.

Barrier terminal blocks come in various styles and sizes. The most popular styles of terminal blocks are PCB-mounted (also known as eurostyle) and wire-mounted. Each style offers different mounting options to suit the specific needs of the application. The most important distinction between the two is that the PCB-mounted blocks are designed to be mounted on electronics printed circuit boards, while the wire-mounted blocks have holes for running wire to the terminals.

Barrier terminals are also available in different mechanical configurations. Some of the most common configurations are screw, pluggable, and annular. Each option offers different performance benefits that suit different applications. Screw type terminals are the most common and reliable type of terminals. Pluggable terminals are suited for applications that require quick and easy connection and disconnection, while annular terminals provide a secure connection between wires and the terminal blocks.

The working principle of a barrier block terminal is fairly straight forward. A wire is inserted into the block and wired to a power source. When the power is switched on, a signal is sent to the terminal which triggers the circuit breaker to separate the two wires and stop the flow of current. This prevents the wires from shorting out, which can cause equipment and wiring damage.

Barrier blocks are also available in different current ratings, meaning they are suitable for a variety of applications. For most residential and commercial applications, barrier blocks with 20A or 30A rating are sufficient. Heavy-duty applications such as industrial automation and robotics may require higher ratings, up to 600A or more.

Barrier blocks are a versatile and reliable solution for managing multiple wires in the same terminal. They offer reliable connections and circuit protection, making them suitable for a variety of different applications. Their two-part design helps minimize the risk of electric shocks and stray currents, while their various configurations offer different performance benefits to suit different applications.

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