Understanding the Differences Between Pluggable, Screw, Barrier, and Screwless Terminal Blocks

If you are looking for a good pcb terminal blocks manufacturers,you may considering 

the variety kinds of terminal block :Pluggable Terminal Blocks, Screw Terminal Blocks , Barrier Terminal Blocks , and Screwless Terminal Blocks.Now let's talk about the  Differences Between them.

Pluggable Terminal Blocks:Normally it has two parts ,male parts and female parts,and these two 

parts can be pluggable. The male parts for welding to the pcb board,the female parts is  for connecting wire.And other kinds of terminal block only one part. And for the pitch ,it has

2.5,3.5,3.81,5.0,5.08,7.5,7.62mm pitch,for the pole,it has from 2pole to 24pole, and many customer will choose 5 position terminal block .

Screw Terminal Blocks: the most traditional and common type of terminal block,By rotating the screw,the downward pressure of the screw compresses the wire tightly into the conductive slot,achieving electrical connection.

Barrier Terminal Blocks :it can be seen as a "reinforced version of screw terminal block".Its structural feature is the presence of on or more raised metal barriers  that separate the wiring holes,increase the creepage distance,and provide stronger wire clamping space.

Screwless Terminal Blocks:means no screws,use the continuous pressure of the spring to clamp the wire.When wiring,a straight handle screwdriver  is usually used to insert and push open the spring,then insert the wire,and after pulling out the screwdriver,the spring returns to its original position to tightly clamp the wire,

Suggestions:

1.Need frequent plugging and modular maintennance----choose Pluggable Terminal Blocks

2.limited budget,universal application,and no worries about vibration and wiring speed----choose Screw Terminal Blocks

3.Dealing with high voltage and high current,with extremely hight requirements for safety and reliability-------choose Barrier Terminal Blocks

4.Pursuing the highest wire efficience,with scenarios mostly iinvolving small and medium currents,and hoping for good vibration resistance----Screwless Terminal Blocks