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Most of us are familiar with terminal blocks – generally a type of connector meeting a wire together. Depending on the setup of the terminals, they can come in varied sizes and styles. Terminal blocks are usually found in the industrial and/or automotive worlds if we are talking about electricity.

Barrier blocks are a subset of terminal blocks in that they offer the same basic functionality of terminals, except they also offer insulation between the various connection points. Having this additional level of protection is extremely important when dealing with high voltages, and large current draw. In these situations, a barrier block is the best solution.

In their most basic form, barrier blocks are formed from three individual parts; an external connection point, the traditional screw terminal, and the barrier strip. By definition, barrier strips are designed to resist the transmission of electrical current along metal studs, and provide insulation for the two contacts. This is done by using flame-resistant insulation materials such as a ceramic base, phenol resin, and a nickel plated steel connection.

Barrier blocks are designed to create connections easily and quickly. They come with an external screw connector, which then attaches to the internal barrier strip. The internal terminal then attaches to the wire that will complete the electrical loop.

Barrier blocks come in a variety of sizes and styles. Devices that need simple connections can use traditional “wire-to-terminal” junction boxes, while those with complicated requirements can use more advanced “DIN-mount” type blocks. Barrier blocks can also be found in speciality applications such as PCBs, and even in military devices.

The primary advantage of barrier blocks is that they enable larger amounts of current to flow than more conventional means of connecting electrical components. They can also reduce the amount of time required for setting up as they provide a much faster and easier way of connecting multiple components.

Barrier blocks also provide a number of safety advantages. The insulating base used in the barrier strips helps protect against short circuits, and also helps reduce the possibility of arcs being generated at high voltages. Additionally, the enclosures of the terminal blocks offer comprehensive protection for both workers and projects against any kind of electrical shock or fire.

In summary, barrier blocks are a highly versatile and useful connection component. They offer the strength, reliability and affordability of traditional terminal blocks with the added safety of the insulated base. When dealing with high voltage and large current draw, using a Barrier block is one of the safest and most efficient ways to go.

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