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Terminal blocks, often seen as a “wire to board” connector, are a critical component in virtually every electrical application. Terminal blocks transfer data, power, or signals between two locations, interconnecting wires between components, devices, and equipment.

The type of terminal block known as a “wire to board” connector is the most common. It transfers signals, data, or power between wires, and serves as a connection point between the wire and the board. It can be used to connect wires to PCBs, or to downstream components. Wire-to-board connectors have several important features that set them apart from other types of terminal blocks.

One of the most important features of this type of terminal block is its compliant pin contacts. These contacts are made of a soft metal, such as brass, which is designed to expand to fit into the board. This ensures that contact is made between the pins and the board, creating a secure connection. The compliant pins act somewhat like springs, pushing the contacts firmly against the board. This prevents movement and offers reliable, repeatable contact.

Another essential feature of a wire to board terminal block is polarization. This feature helps protect users by detecting mis-mating to make sure that the wrong terminal block is not plugged in. This feature ensures that the correct terminal block is being used, and minimizes the risk of shorts and other potential errors.

The third important feature of a wire-to-board terminal block is its ability to quickly and securely connect wires to boards. The terminal blocks are designed to have a locking mechanism, which is triggered when it is pushed onto the board. This safeguards against accidental disconnection and ensures that wires remain safely inside the terminal block.

Finally, terminal blocks also offer convenience. Some types are designed to be daisy-chained together to reduce the amount of wiring that needs to be done. This makes installation and maintenance faster and easier. There are even contactless terminal blocks available that use RFID or NFC tags for identification and added security.

Terminal blocks, like the “wire-to-board” connector, are essential for any electrical application. Their compliant pin contacts, polarization features, and secure connection mechanisms make them an ideal choice for quickly and safely connecting wires to boards. The convenience of daisy-chaining and contactless options adds even more value.

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