Mastervolt CombiMaster 12/3000-100 Inverter Charger

Seamless 12V to 230V Power Conversion and Intelligent Battery Management

The Mastervolt 230V CombiMaster 12/3000-100 Inverter Charger is engineered to eliminate power interruptions and simplify onboard electrical architectures for demanding marine, mobile, and off-grid applications. By consolidating a high-output pure sine wave inverter, an advanced intelligent 3-step+ battery charger, and an automatic AC transfer switch into one compact, lightweight enclosure, this unit delivers dependable energy management without the footprint of separate components. Designed for hum-free operation, it provides clean 230V AC power capable of starting heavy inductive loads while remaining safe for sensitive electronics.

Intelligent AC Power Management and Power Assist

Managing fluctuating shore power or undersized generators is a common challenge in mobile and marine power systems. The CombiMaster addresses this through its integrated Power Assist function, which actively prevents blown mains fuses. When AC load demands exceed the capacity of the incoming shore or generator supply, the unit automatically supplements the shortfall with power drawn from the 12V battery bank. Once the peak demand subsides, the system seamlessly reverts to charging the batteries. Combined with fast, automatic switching between mains and inverter mode, you experience uninterrupted power delivery whether docked, plugged into a caravan park, or operating remotely.

Advanced 3-Step+ Charging and Network Integration

Maximising battery lifespan requires precise voltage and current control. The built-in 100A charger utilises Mastervolt's proven 3-step+ charging algorithm to deliver faster, safer replenishment across a wide range of battery chemistries, reducing the risk of premature cell degradation or undercharging. For complete system visibility and control, the CombiMaster features native multi-network compatibility. It integrates directly with CZone, MasterBus, and NMEA 2000 communication protocols, allowing system builders and operators to monitor performance, configure settings, and automate power distribution from existing multifunction displays or digital switching interfaces.

Key Features and System Benefits

• Combined 3000W Inverter and 100A Charger: Consolidates 12V to 230V power conversion and high-capacity battery charging into a single, space-saving unit.
• Active Power Assist Technology: Protects against tripped shore power breakers and overloaded generators by dynamically boosting AC input with battery power.
• Uninterrupted AC Transfer: Automatically switches between generator, mains, and inverter supply to maintain continuous operation of onboard appliances.
• Multi-Protocol Communication: Built-in CZone, MasterBus, and NMEA 2000 connectivity enables straightforward integration into modern marine and RV monitoring networks.
• Intelligent 3-Step+ Battery Charger: Optimises charge cycles for faster recovery and extended battery bank longevity.
• Installer-Friendly, Compliant Design: Equipped with heavy-duty connections for secure, low-resistance cabling and fully E-mark certified for mobile vehicle compliance.

Engineered for Demanding Mobile and Marine Environments

Unlike entry-level power inverters that struggle with voltage drops or complex system integration, the CombiMaster 12/3000-100 is built to withstand harsh operational conditions. Its generator compatibility ensures stable charging even when connected to irregular AC waveforms, while heavy-duty terminal connections reduce installation time and mitigate the risk of thermal hotspots under sustained high-current loads. With full E-mark certification, it meets strict regulatory standards for installation in commercial vehicles, emergency response units, motorhomes, and vessels.

Upgrade Your Onboard Power System

Equip your vessel, caravan, or off-grid setup with the Mastervolt CombiMaster 12/3000-100 to achieve reliable, automated 230V AC power and precision 12V battery charging in one integrated solution.