Victron Energy MultiPlus-II 12/3000/120-32 230V Inverter Charger – PMP122305010

Product Description

The Victron Energy MultiPlus-II 12/3000/120-32 230V is a professional inverter/charger designed for 12V battery systems requiring reliable 230V AC power, high-capacity battery charging and intelligent management of an external AC supply.

Combining a pure sine wave inverter, a 120A battery charger and a 32A AC transfer switch, the MultiPlus-II provides an integrated solution for marine, mobile, backup-power and off-grid installations. It combines established MultiPlus functionality with additional features designed for advanced energy systems.

With a continuous inverter rating of 3,000VA and an output of up to 2,400W at 25°C, this unit can power a wide range of compatible AC equipment, subject to starting-current requirements, battery capacity and installation design.

Intelligent AC Power Management

PowerControl and PowerAssist

PowerControl allows the maximum AC input current to be configured to suit the available shore power, mains supply or generator. The unit can adjust its battery charging demand to help avoid overloading the source.

PowerAssist goes further by supplementing a limited AC supply with additional energy from the battery through the inverter when connected loads temporarily exceed the available input capacity.

The MultiPlus-II also supports an optional external current transformer for extended current measurement in suitable grid-parallel installations. This allows PowerControl and PowerAssist to be configured using external current sensing where required.

Key Features and Benefits

• 3,000VA inverter capacity: Delivers up to 2,400W continuous active power at 25°C.

• Pure sine wave output: Provides a stable 230V AC supply for compatible electrical equipment.

• 120A battery charger: Supports high-capacity charging of compatible 12V battery banks.

• 32A AC transfer switch: Automatically transfers between an acceptable external AC supply and inverter operation.

• PowerControl: Helps manage the load on a limited mains or generator supply.

• PowerAssist: Supplements external AC power with battery energy during periods of higher demand.

• UPS functionality: Automatically switches to inverter power when the external AC supply fails, helping maintain continuity for connected equipment.

• Two AC outputs: The main output supports automatic transfer, while the auxiliary output can be configured to supply selected loads only when external AC is available.

• VE.Bus communications: Supports system configuration and integration with compatible Victron equipment.

• Parallel and three-phase capability: Multiple compatible units can be configured for higher output or three-phase systems.

• Adaptive battery charging: Multi-stage charging can be configured for supported battery types.

• Integrated protection: Includes protection against overload, short circuit, excessive temperature and abnormal battery voltage.

Technical Specifications

Product identification

• Brand: Victron Energy

• Product range: MultiPlus-II

• Model: MultiPlus-II 12/3000/120-32 230V

• Manufacturer part number: PMP122305010

• Product type: Inverter/charger with automatic AC transfer switch

Inverter specifications

• Nominal DC battery voltage: 12V

• DC input voltage range: 9.5–17V

• Continuous apparent power at 25°C: 3,000VA

• Continuous active power at 25°C: 2,400W

• Continuous active power at 40°C: 2,200W

• Continuous active power at 65°C: 1,700W

• Peak power: 5,500W

• AC output voltage: 230V AC ±2%

• Output frequency: 50Hz ±0.1%

• Output waveform: Pure sine wave

• Maximum efficiency: Approximately 93%

• Zero-load power: Approximately 13W

• Zero-load power in search mode: Approximately 3W

Battery charger specifications

• Maximum battery charge current: 120A

• Battery system: 12V

• Typical absorption voltage: 14.4V DC

• Typical float voltage: 13.8V DC

• Typical storage voltage: 13.2V DC

• Starter battery charging output: 4A

• Charging algorithm: Adaptive multi-stage charging

Charging voltages are typical settings and must be configured to suit the connected battery chemistry and manufacturer's requirements.

AC input and transfer specifications

• Nominal AC output: 230V

• AC input voltage range: 187–265V AC

• AC input frequency range: 45–65Hz

• Maximum AC input current: 32A

• AC transfer switch rating: 32A

• PowerControl: Yes

• PowerAssist: Yes

• Automatic AC transfer: Yes

• AC outputs: Two

General specifications

• Communication interface: VE.Bus

• Cooling: Fan-assisted

• Protection rating: IP22

• Operating temperature: -40°C to +65°C, subject to power derating

• Dimensions (H × W × D): Approximately 546 × 275 × 147mm

• Weight: Approximately 19kg

Typical Applications

The Victron Energy MultiPlus-II 12/3000/120-32 is suitable for a range of correctly designed 12V electrical systems, including:

• Campervans, motorhomes and expedition vehicles

• Boats and marine electrical installations

• Off-grid cabins and remote properties

• Battery-backed emergency power systems

• Renewable energy and battery storage installations

• Workshops and specialist mobile equipment

• Systems combining shore power or generator input with battery-powered AC loads

Installation and Compatibility

The MultiPlus-II is designed for use with a suitable 12V battery bank and correctly rated AC and DC electrical infrastructure. It can be integrated with compatible Victron monitoring, control and energy-management equipment through VE.Bus.

The 120A charging capability and high inverter output require careful consideration of battery discharge limits, cable sizing, DC fusing, ventilation, AC protection and earthing. Battery chemistry, charging voltages and control settings must be matched to the battery manufacturer's recommendations.

For installations involving grid-parallel operation, additional system design, current sensing and applicable grid-compliance requirements must be considered. The 12/3000/120-32 model should not be assumed to be suitable for every grid-connected application.

Installation and commissioning should be carried out by a suitably qualified professional in accordance with the manufacturer's instructions and applicable electrical regulations.

Please check the model and part number before ordering: PMP122305010 identifies the MultiPlus-II 12/3000/120-32 230V model with a 32A AC transfer switch. It is different from the original MultiPlus 12/3000 models and from MultiPlus-II models designed for other battery voltages or AC systems.