Victron MultiPlus-II 12/3000/120-32 Inverter/Charger

The Victron MultiPlus-II 12/3000/120-32 is a professional-grade inverter/charger designed for high-demand 12V systems where stable 230V AC power and intelligent battery charging are essential. Combining a pure sine wave inverter, a powerful 120A battery charger and an integrated AC transfer switch in one unit, it’s built for caravans, marine systems, 4WD touring, off-grid solar and backup power applications.

Whether you’re connected to shore power, generator supply or running purely from battery, the MultiPlus-II delivers seamless, controlled power management in a single compact solution.

All-in-One Power Management

This unit integrates:

• 3000VA pure sine wave inverter
• 120A adaptive battery charger
• 32A AC transfer switch

When external AC is available, it powers your loads and charges the battery bank. If supply drops out, it quickly transitions to inverter mode to maintain output on supported circuits.

PowerControl and PowerAssist

In environments with limited AC supply, such as caravan parks or small generators, PowerControl allows you to set a maximum input current to prevent overload and nuisance breaker trips.

PowerAssist supplements insufficient grid or generator power with battery support during short peak demands. This helps manage higher start-up loads more smoothly without constant load juggling.

Fast Transfer Switching

The MultiPlus-II provides rapid changeover from external AC to inverter power, supporting continuity for selected essential circuits. This makes it suitable for:

• Refrigeration
• Communications and networking
• Medical or control systems
• Backup circuits in homes and sheds

Advanced Battery Charging

The integrated 120A charger supports configurable charge profiles for both LiFePO4 and lead-acid battery systems. Charging behaviour can be aligned with manufacturer recommendations, improving battery longevity and daily performance.

Temperature sensing support enhances charge accuracy in varying conditions.

Dual AC Outputs

Two AC outputs allow separation of:

• Critical loads (inverter-backed)
• Non-essential loads (external AC only)

This provides greater control over runtime and helps prevent unnecessary battery depletion when running off-grid.

Monitoring and System Integration

VE.Bus communication enables advanced configuration and integration into Victron’s monitoring ecosystem. When paired with a compatible GX device, the system can connect to Victron Remote Management (VRM) for:

• Remote monitoring
• Alarm notifications
• Performance tracking
• Generator start/stop control (via programmable relay)

Scalable System Design

The MultiPlus-II supports parallel and three-phase operation via VE.Bus, allowing scalable AC systems for higher-capacity installations.

Peak surge capability supports motor start-up loads and compressors, while the 120A charger assists with faster battery recovery when shore or generator power returns.

Correct cable sizing, battery capacity, ventilation and protective devices are critical to safe and reliable installation.

The Victron MultiPlus-II 12/3000/120-32 is a serious upgrade for advanced caravan, marine and off-grid systems, delivering clean 230V power, intelligent charging and better control over limited AC supplies.

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