How does the screwless terminal block work?

Due to its design concept and convenient operation, the screwless terminal block has gradually become an important component in many fields such as industrial automation, power transmission and communication equipment in the field of electrical connection. This wiring method without screw fastening simplifies the installation process, improves work efficiency, and reduces the risk of electrical failure caused by loose screws. So, how does the screwless terminal block achieve its function?

The core working principle of the screwless terminal block lies in its innovative connection mechanism, which abandons the traditional screw fastening method and adopts a more direct and efficient connection technology. Specifically, when the wire needs to be connected to the terminal block, the operator only needs to insert the exposed part of the wire into the preset jack or notch of the terminal block. Subsequently, through a specific mechanical structure or material properties, the wire is in close contact with the conductive parts inside the terminal, thereby completing the electrical connection.

The detailed mechanism is as follows.
Crimp connection: A common screwless terminal block adopts a crimp connection mechanism. In this design, spring clips or elastic pressure pieces are provided inside the terminal. When the wire is inserted, these components automatically apply a certain amount of pressure to the wire, allowing it to fit tightly with the conductive part inside the terminal. As the pressure continues to act, the contact area between the wire and the terminal increases and the contact resistance decreases, thereby ensuring the stability and reliability of the electrical connection.
Plug-in connection: Another type of Screwless Terminal Block uses a plug-in connection mechanism. This design usually uses a special pin or slot structure to allow the wire to be easily connected to the terminal block like a plug is inserted into a socket. During the plug-in and pull-out process, the precise fit of the pin or slot ensures good electrical contact between the wire and the terminal. In order to prevent the wire from accidentally falling off, some plug-in terminal blocks are also equipped with a locking mechanism to enhance the stability of the connection.

The working principle of the Screwless Terminal Block reflects its technological advancement and has shown many advantages in practical applications. The screwless design simplifies the installation and maintenance process, reduces the requirements for operator skills, and reduces the failure rate and maintenance costs due to the reduction in the use of consumable parts such as screws. In addition, the Screwless Terminal Block also has good electrical performance and stability, which can ensure reliable operation in various harsh environments.

The working principle and wide application advantages of the Screwless Terminal Block play an increasingly important role in the field of electrical connection. With the continuous advancement of technology and the continuous expansion of the market, this screwless terminal block will be more widely used and developed in the future.