7 Factors to Consider Before Buying Terminal Blocks

Do you feel secure with your electric connection? It was asked because many people go through the poor flow of current, which leads to the failure of electric appliances. No one likes to lose expensive appliances like LEDs, refrigerators, microwaves, and juicer machines. These are some of the expensive appliances which become scapegoats during the fluctuation of voltage. To avoid these matters in your electric system, you need to find the safest electrical connection for your place. 

Electrical connections are sensitive, and we must know what to choose for them. The wrong choice can cause inevitable accidents in the future, and we need to choose components like wires, terminal blocks, switches, etc., very carefully. The flow of current varies in a wide range, and a compatible system of electricity is required for it. For that, you need to find some really important terminal blocks to connect different wires without any risk of short circuits. A wholesale terminal block supplier can supply large quantities with high standards. You need to stay connected with that kind of supplier. He or she will lead you to better formation of the electric system in your home, office, or any other place. 


The distance from one pole to another pole is called pitch. You should consider it before buying terminal blocks. The pitch factor is very important to avoid spacing and temperature issues. On average, the pitch ranges between 2.54 mm and 7 mm. If you are buying them, you need to keep the pitch size within this range. It is a common range where the creepage level is measured. This creepage level is important to prevent the plastic parts from melting. Also, it allows the terminal blocks to have spacing between their connections.

Pole Count

A point count is the number of circuits in a terminal block. You can find pole counts from 1 to 24 normally. It depends upon your usage and space in the system. Some connections require a single pole count, and some require multiple. In most cases, multiple pole counts are used in terminal blocks to connect various wires. It also helps users to divide the load in the system through multiple pole counts. Since a multi-pole count factor allows you to add more wires in a terminal block, you can choose connectable terminal blocks to add more wires. 

Wire Size

Wire size is equally responsible for the rest of the factors in a terminal block. Likewise, you need to select the correct range of AWG (American Wire Gauge) for it. Normally, 18-4 and 24-12 sizes are used. For instance, the gauge of the wire with a maximum of 24 AWG and a minimum of 12 AWG. There are different types of wires, which are single-core and multi-core. It depends on the type of terminal block to accept single or multiple core wire. You need to select the difference between them before buying terminal blocks. 

Wire Orientation

The angle also matters in terminal blocks. From 45 to 180 degrees, this has to do a lot with the installation and performance of terminal blocks. That is why you may hear terms of vertical and horizontal terminal blocks in the industry. To illustrate, you will find the range in 45, 90 (horizontal), and 180 degrees (vertical). It allows the users to adjust the wiring system according to the connection system. Some users consider vertical, and some consider horizontal types. It also allows the users to replace the wiring easily if the system is connected at their convenience. You must consider it when choosing a wholesale terminal block supplier.

Wire Securing Method

Next is the wire-securing method, which allows you to secure the wire at your convenience. Some prefer to use the screw method, some prefer the pluggable method, and some prefer the push button method. However, you can find other methods like IDC, barrier, spring cage, and tab connector. It all depends upon your electric board and how you install wires. In some places, the screw method provides the highest stability, and somewhere, other methods are useful. If you have to change the wiring so frequently, you can go for the non-screw method. Otherwise, there is a list of wire-securing methods for you. These terminal blocks are available in a wide range of securing types.

Voltage Limit

Another important factor you need to consider is the voltage limit. Plastic is fragile against heat, and high voltage can melt down plastic block terminals. This will lead to accidents like a short circuit in your electric board. To avoid that issue, you need to select A voltage limit more than your required limit. For instance, if your electric board has a 220-volt limit, you need to buy a block terminal of 240 volts or more. This will allow your electric board to survive against high voltage or fluctuation issues. In addition, this will also keep the plastic in your block terminal safe from melting. 

Current Limit

Similarly, the current limit of a terminal block must be higher than your electric board’s limit. Use at least 150% of your required limit current performance. For instance, if your electric board’s current limit is 60 amperes, you need to buy a terminal block of 90 amperes. This will save your terminal blocks against high current flow. As a result, the plastic will neither melt nor cause fire accidents in the system. This factor is very important, and you must consider it. It will help your electric board to avoid rising temperatures during high current flow. 


Once you select the right components, like terminal blocks, you will not find any loose ends in your electrical board. This will save you from heavy losses in monetary terms as well as any casualty. You must know where and how you can find a wholesale terminal block supplier who can sell you the best quality terminal blocks. As a result, your life and wealth will have no harm from electricity. In conclusion, it will also save the waste of electricity, which will benefit you in the form of low or medium electricity bills. 


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