Victron Energy MC4 Solar Connector Pair, 1 Male, 1 Female, For 4 mm Solar Cable

Overview

The Victron Energy SCA520300000 is an MC4 solar connector pair for joining solar panel leads in a marine or off-grid charging system. It includes one male and one female connector, giving you the matching ends needed for a clean PV cable connection between panels, extension leads, combiner wiring, or a solar charge controller input that uses MC4-style connections.

MC4 connectors are single-contact electrical connectors commonly used on solar panels. This pair is a practical fit for boat solar installs where deck routing, cabin-top panels, davit-mounted panels, or rail-mounted panels need a secure connection that can be serviced later without cutting into the whole run.

The connectors are simple to install onto 4 mm solar cable when the correct crimping and assembly tools are used. As with any DC solar wiring on board, polarity should be checked before final connection, and the cable run should be supported so movement, vibration, and deck hardware do not place strain on the connector body.

Key features

• Includes one male and one female MC4 connector for a matched solar connection pair.
• Made for solar panel cable connections in PV charging systems on boats, vehicles, and off-grid installations.
• Single-contact connector format commonly used with solar panels and MC4-style solar leads.
• Installs onto 4 mm solar cable, helping keep custom cable runs tidy during panel or charge controller wiring.
• Useful for replacing a damaged connector end, building an extension lead, or completing a panel-to-controller cable run.

Compatibility and fit

This connector pair is intended for solar wiring that uses MC4-style connectors. Before installation, compare the connector style on the panel, extension cable, or controller lead with the existing system, since mixed connector types can look similar but may not mate correctly.

For marine installations, this part makes the most sense on small to mid-size solar charging systems where panels feed a Victron or other compatible solar charge controller. It is often used when routing panel leads from a cabin top, arch, hardtop, or rail installation into a protected cable path toward the electrical compartment.

Installation and setup

Use the correct PV cable size, stripping length, crimp terminal, and MC4 assembly process for the cable being fitted. A proper crimp is important on a boat because vibration and repeated movement can expose weak cable terminations over time.

After assembly, check that each connector is fully seated and that the locking tabs engage. Route the finished cable so the connector is not left under constant tension, and avoid low spots where water can sit around the connection for long periods.

Use on board

This connector pair suits boat owners adding or repairing solar panels for battery maintenance, cruising loads, fishing electronics, refrigeration support, or general house-bank charging. It is a small part, but it has a direct effect on how cleanly and safely the solar array ties into the rest of the DC charging system.

What's included

• One male MC4 solar connector
• One female MC4 solar connector