Waterproof self-welding connector from 0.3 to 6 mm2

The connector looks like a tube heat shrinkable transparent. Inside, there are two key elements :

• a central tin ring which melts at the heat and ensures the welding of the conductors,
• a continuous thermofusible adhesive layer that is distributed throughout the contact area to block moisture and strengthen mechanical hold.

When laying, the bare wires are simply inserted one in front of the other in the tube. The passage of a hot air gun melts the tin that binds to the strands, while the adhesive spreads around the weld. In a few seconds, we get a welded, isolated and totally junction Waterproof.

These connectors are particularly suitable for multi-branch flexible cables. Where conventional crimping can leave microspaces or a risk of rupture, the melting of tin coats all strands and forms a compact bond. The adhesive completes the work by marrying the whole surface and sealing the connector. For safety and a perfect finish, all connectors can be covered by a sleeve heat shrinkable double adhesiveIts length will cover at least 5 cm on each side of the connection.

Each size is easily identifiable with a standard color code :

• white for very fine yarns (0.25 to 0.8 mm2),
• red for small sections (0.5 to 1.5 mm2),
• blue for intermediate conductors (1.5 to 2.5 mm2),
• yellow for larger cables (4 to 6 mm2).

This simple tracking avoids errors and facilitates field interventions.

At a port site, a technician had to quickly restore the connection to an outdoor LED projector. Thanks to these connectors, he was able to solder the multi-brain conductors in less than 10 minutes. The transparent tube was used to check the melting of tin, and the adhesive ensured the sealing against the projections of salt water. The facility remained functional without any recovery, even after several months under marine conditions.

In an emergency response to a marking network in a submerged road tunnel, a secondary power cable was damaged by constant infiltration of water from condensation and capillary lifts. Ambient humidity was 95%, and the environment was saturated with salt fog. The technician opted for a self-welding connector Waterproof for welding the multi-brain conductors, then reinforced the whole by a medium-wall heat shrink tubing double adhesive, largely covering the junction zone. This double protection ensured that the repair was leakproof despite permanent moisture. A year later, during a maintenance audit, the connection was always dry and perfectly functional, without oxidation or drop in voltage.

The self-welding heat-fusible connector offers considerable time savings compared to traditional methods. It removes the need to add a tubing or Insulating tape after welding, and guarantees a clean, durable and resistant finish to both vibration and humidity. It is an essential product for any professional who must intervene quickly while ensuring the reliability of its connection.