5 Popular Types of PCB Terminal Block Connectors

PCB Terminal Block Connectors, or printed circuit board terminal block connectors, are the connectors which connect to circuit boards. The PCB terminal blocks are usually soldered onto the board. Terminal blocks are used to connect electrical wires together in appliances ranging from automobiles to telephones.

5 popular types of PCB Terminal Block Connectors

  • Barrier Terminal Blocks
  • Pluggable Terminal Blocks
  • Rising Clamp Terminal Blocks
  • Wire Protect Terminal Blocks
  • Screwless Terminal Blocks

Barrier Terminal Blocks

Barrier terminal block connectors are usually the most sturdy and reliable type of terminal block connectors. This is because they are larger in size, and therefore they can handle larger current ratings. Most barrier terminal block connectors can handle up to 25-30 amps, and they can accept up to 22 AWG cables. Once the connection is secured, they will be reliable until forcefully broken or detached.

Pluggable Terminal Blocks

Pluggable terminal block connectors are used primarily in wire to board situations, and you can find them in computers and cars. The main difference in pluggable terminal block connectors is that they are designed to easily connect and detach. Because of this feature, there are usually wire protecting options available to combat this wear and tear. Some common sizes of these connectors are .150″, .200″, and .250″.

Rising Clamp Terminal Blocks

Rising clamp terminal block connectors are usually one pieced, and are commonly used where there is restricted access. They function similar to screw terminals, in that a screw is tightened to secure the wires. These are ideal in highly active environments, because they are designed to withstand activity and vibrations.

Wire Protect Terminal Blocks

Wire protect terminal block connectors are used to prevent damage from the rising clamps or screw terminals. Wire protect terminal blocks work the same way as rising clamp terminal blocks, except they secure the wires with a flat surface instead of a screw-like surface. This prevents the wires from being twisted, and are intended for use in lighter duty environments. They are lower quality, but still useful if used in the right settings.

Screwless Terminal Blocks

Screwless terminal block connectors are very common because they have a quick assembly time. They work like clamps, where the wire is inserted into the terminal block and snapped into place. Screwless terminal blocks are used in most commonly used appliances because they are easy to set up. A good example of a screwless terminal block would be connecting your stereo speaker wires into the stereo, and snapping the wire in place. There is usually no wear and tear, which is why they’re so commonly used in household appliances.