Exotronic 4mm² Twin MC4 Compatible Solar Extension Cable - 1m, 3m, 5m, 10m

The Exotronic 4mm² Twin Solar Extension Cable provides a simple, ready-made way to extend the connection between your solar panels and the rest of your solar system.

Available in 1m, 3m, 5m and 10m lengths, each lead uses 4mm² twin solar cable with pre-terminated MC4 compatible connectors, making it useful for fixed roof solar, portable panels, caravans, campers, 4WDs, boats and other off grid installations. The positive and negative conductors are joined together for tidy routing and can be separated where required to suit the installation.

Available in Four Lengths

Choose from 1m, 3m, 5m or 10m depending on the distance between your panels and solar equipment. Shorter extensions are useful for roof mounted panels, cable entry points and compact installations, while the longer options provide more freedom when positioning portable or folding solar panels away from the vehicle.

Remember that longer cable runs create more voltage drop, so conductor size should always be considered alongside array current and total cable length.

4mm² Twin Solar Cable

The 4mm² conductor size provides a practical balance between cable size, flexibility and electrical performance for many common 4WD and caravan solar installations. It is useful for shorter solar runs and moderate array currents where 6mm² cable may not be necessary.

For longer runs or higher current systems, stepping up to 6mm² cable can help reduce resistive losses and voltage drop. Cable sizing should be based on the actual array current, total conductor length and acceptable voltage drop rather than connector rating alone.

Pre-Terminated MC4 Compatible Connectors

The extension lead arrives ready to use with MC4 compatible solar connectors fitted at both ends. The snap-in locking system provides a secure connection, with IP67 protection when correctly mated.

Pre-terminated connectors make these leads particularly convenient for extending existing solar panel cables or portable solar setups without needing to cut cable and crimp additional connectors.

Fixed & Portable Solar Applications

These extension cables can be used across a range of installations including fixed roof panels, portable solar panels, folding panels, caravan and camper systems, 4WD canopy installations and marine solar setups.

Longer extension leads are particularly useful with portable panels because they allow the vehicle or camper to remain in the shade while the solar panel is repositioned into direct sunlight.

30A Connector Rating

The MC4 compatible connector system is rated to 30A and 1000V DC under the stated IEC specifications.

This does not mean every 4mm² cable installation should automatically be operated at 30A. Cable length, conductor size, voltage drop, installation conditions and the ratings of every other component in the circuit still need to be considered. The complete system should always be designed around its lowest rated component.

MC4 Compatibility Note

These extension leads use MC4 compatible connectors rather than genuine Stäubli Original MC4 connectors. For permanent solar installations, avoid cross mating different connector manufacturers unless the manufacturers specifically approve the combination. Connectors can physically fit while using different contact geometry, tolerances and sealing systems.

Shipping Australia Wide

Orders are dispatched quickly from Australia. Questions? Hit us up, we're 4WDers too and happy to help.

Specifications