Round connector - insulated

Round connector

Round plugs are used to connect cables easily and safely. The use of round plugs ensures a long-term constant quality of the electrical connection.

The connectors are available in insulated form. The color of the insulation of the insulated round plugs indicates the wire cross section that can be used.

You can find an overview of the colors here:

Cross-section   Color Insulation
0,50 - 1,50 mm²   red
1,50 - 2,50 mm²   blue
4,00 - 6,00 mm²   yellow


As a counterpart to the round plugs, round sleeves are suitable.

Processing of flat receptacles

Round connectors are crimped on with special crimping or pressing pliers. The cable to be fitted with a round connector is stripped to the length specified by the manufacturer. Then the plug that matches the conductor cross-section is placed on the stripped end piece and shaped with the crimping pliers or a press with an appropriate die. The deformation creates a secure connection between the stranded wire cable and the round plug. In order to have a quality control, some crimping pliers leave a marking in the plug. The crimping pliers have an engraving in the die for this purpose.