What is TERMINAL BLOCK? Basics and types

When you have a bunch of electrical cords to connect, a terminal block provides a safe and convenient way to keep them organized. They are durable, easy to use and designed to keep the wires of various gauges securely connected.

Terminal block  function

A terminal block is a group of two or more similar connection points. You can connect wires at these points. The terminal strip combines several similar blocks into one device. In the tape, the blocks are isolated from each other.

What is terminal tape?

A terminal strip combines several similar terminal blocks into one device, used to connect the central panel and external devices. In the tape, the blocks are isolated from each other.

Advantages of the terminal sector

1. ORGANIZE CORDS TO OPTIMIZE BOARD SPACE:   Terminal strips provide a space-saving solution by allowing for a neat and organized arrangement of wires. This makes it easy to access wires when necessary, while saving valuable panel space.
2. Simplify Assembly Methods:   Terminal strips simplify the assembly process by providing a quick and easy way to connect wires. This reduces the risk of errors during installation and also saves time and effort.
3. IMPROVE BOARD ELECTRICAL SAFETY:   Terminal strips help improve electrical safety by reducing the risk of exposed wires, short circuits and electrical shock. They also help prevent wiring errors, which can lead to dangerous electrical situations.
4. Make equipment maintenance and troubleshooting easier:   Terminal strips make wiring easier to access and troubleshoot, making equipment maintenance and troubleshooting easier. This helps reduce downtime and increase productivity, as well as making it easier to replace faulty components or upgrade equipment.

The main functions of the terminal block are conduction and isolation. The main block body is made of a solid material, such as plastic or ceramic, which electrically insulates adjacent blocks. The conductive parts are made of copper and corrosion-resistant metals compatible with copper.

Use for terminal block

The terminal block must first be installed in a safe and stable location away from moisture. To use it, strip about an inch of insulation from the two wires you want to connect. You then insert the bare wires into the block’s metal connectors and clamp them until they are securely attached.

Special functions of terminal block

While most terminal blocks simply create an electrical connection, some have built-in fuse holders, indicator lights, or other features that add functionality for more complex applications.

Terminal block assembly

You can find dozens of types of terminal blocks, some generic and some specialized. Designers have developed terminal blocks for domestic, industrial, electronic, and many other uses.

Labeling the terminal block

You can use a terminal block to organize wires that have different functions. Many terminal blocks have a labeling chart that allows you to determine how the wires are organized.

What is TERMINAL BLOCK? Basics and types

Terminal block orientation

Terminal blocks are commonly available with one of three different wire entry angles: 45°, 90°, or 180°. 90 degrees and 180 degrees are also referred to as horizontal and vertical, respectively.

Wiring specifications and terminal block connection

When discussing terminal blocks, the term “contact,” also known as position, method, or electrode, refers to a wire connected to the block. The number of contacts is an important selection when considering a product, as the buyer must match this number to the number of wires needed for a project or application. Contact pitch refers to the distance between each contact, and is measured from the center of each hole or slot. The degree of contact is directly related to the number of contacts and is usually expressed in millimeters (mm).

SHINING can provide 2/3/4/5/6/7/8/9/10/11/12/13/14/15 pole terminal blocks.

These different types of terminal blocks allow greater wiring flexibility and can meet the needs of different applications.

You can find more information here: Terminal Block

How to decide the terminal block?

Choosing the right terminal block requires considering these factors and choosing based on the application.

1. Current requirements:  Determine the desired current rating and choose a terminal block that can handle the expected current demand, taking into account the need for a safety buffer. In general, it is recommended to choose a terminal block with a current rating higher than the actual current requirement to prevent overheating and damage to the terminal block.
2. Voltage Requirements:  Determine the required voltage rating and select a terminal block that can handle the expected voltage demand. In addition, pay attention to the insulation performance of the terminal block to ensure effective isolation between different circuits.
3. Wire type:  Different types of wire have their own advantages and disadvantages, so it is necessary to choose the appropriate wire type based on the application. 
4. Installation method:  Different terminal blocks have different installation methods, including   PCB mounting  ,   barrier strips  ,   and feeding  .
5. Terminal Block Size: Determine the desired terminal block size to ensure it can accommodate the wires used and the appropriate terminal blocks. Terminal blocks are typically manufactured to accept a range of wire or connector sizes.
   North American wire size is expressed in American Wire Gauge (AWG), a standard for non-ferrous wire sizes.
   Higher AWG numbers represent smaller conductor diameters, and vice versa. For example, typical AWG 12 household wire has a larger diameter than AWG 22 telephone wire.