Victron Energy MultiPlus-II 12/3000 120V Dual Inverter Charger with PowerAssist and Remote Monitoring

MultiPlus-II 12/3000 120-50 2X 120V

The MultiPlus-II combines the functions of the MultiPlus and the MultiGrid. It has all the features of the MultiPlus, plus an external current transformer option to implement PowerControl and PowerAssist and to optimize self-consumption with external current sensing (max. 32A).

It also has all the features of the MultiGrid with built-in anti-islanding and an increasingly long list of country approvals.

PowerAssist

The MultiPlus-II will prevent overload of a limited AC source, such as a generator or shore power connection. First, battery charging will automatically be reduced when otherwise an overload would occur. The second level will boost the output of a generator or shore side supply with power taken from the battery.

ESS: Energy Storage Systems

The MultiPlus-II is the key component in a Victron ESS system, providing the flexibility to combine with MPPT Solar Chargers or Grid-tie PV Inverters. For examples and more detailed information see the ESS (Energy Storage System) manual.

Uninterrupted AC power (UPS function)

In the event of a grid failure, or when shore or generator power is disconnected, the inverter within the Multi is automatically activated and takes over the supply to the connected loads. This happens so fast (less than 20 milliseconds) that computers and other electronic equipment will continue to operate without disruption.

Remote Monitoring and Control

When coupled with a GX device (e.g. Cerbo GX) you can monitor and control your Multi and system or systems' locally (LAN) or remotely via the internet from anywhere in the world, using the free VRM app and free VRM portal website. Access can be from a phone, tablet, laptop, or PC for multiple operating systems. There is no end to the level of control, from adjusting your Multi to auto-starting a backup generator and more.

Specifications:

• PowerControl PowerAssist: Yes
• Transfer Switch: 50A
• Maximum AC Input Current: 50A (each leg)

Inverter Specifications:

• DC Input Voltage Range: 9,5 17 V
• Output: Output Voltage 120 VAC 2% / Frequency 60 Hz 0,1% (1)
• Continuous Output Power at 25C (3): 3000 VA
• Continuous Output Power at 25C: 2400 W
• Continuous Output Power at 40C: 2200 W
• Continuous Output Power at 65C: 1700 W
• Maximum Apparent Feed-In Power: 2500 VA
• Peak Power: 5500 W
• Maximum Efficiency: 93%
• Zero Load Power: 13W
• Zero Load Power in AES Mode: 15W
• Zero Load Power in Search Mode: 4W

Charger Specifications:

• AC Input (Split Phase): 180-280 VAC 45 65 Hz
• AC Input (Single Phase): 90-140 VAC 45 65 Hz
• Charge Voltage 'Absorption': 14,4 V
• Charge Voltage 'Float': 13,8 V
• Storage Mode: 13,2 V
• Maximum Battery Charge Current (4): 120 A
• Battery Temperature Sensor: Yes

General Specifications:

• Auxiliary Output: 35 A Each leg
• External AC Current Sensor (optional): 100 A
• Programmable Relay (5): Yes
• Protection (2): a g
• VE.Bus Communication Port: For parallel, split phase and three phase operation, remote monitoring and system integration
• General Purpose Com. Port: Yes, 2x
• Remote On-Off: Yes
• Operating Temperature Range: -40 to +65C (-40 150 F) (fan assisted cooling)
• Humidity (Non-Condensing): Max 95%

Enclosure Specifications:

• Material Color: Steel, blue RAL 5012
• Protection Category: IP22
• Battery-Connection: 2x2 M8 bolts
• 120 V AC-Connection: Screw terminals 21 mm (4 AWG)
• Weight: 22 kg
• Dimensions (hxwxd) (mm): 578 x 275 x 148

Standards:

• Safety: EN-IEC 60335-1, EN-IEC 60335-2-29,
• Emission, Immunity: EN 55014-1, EN 55014-2, EN-IEC 61000-3-2, EN-IEC 61000-3-3, IEC 61000-6-1, IEC 61000-6-2, IEC 61000-6-3

*Note: For a short period of time this product was called MultiGrid-II.

The Victron Energy MultiPlus-II 12/3000 120V is a versatile inverter charger designed for advanced energy systems, combining the functionalities of a multi-mode inverter, charger, and transfer switch in a compact unit. With a continuous output power of 2400 W and a peak power of 5500 W, it provides reliable power conversion for residential, commercial, and off-grid applications. This model features PowerControl and PowerAssist technology, allowing it to prevent overloads by reducing battery charging or boosting power from external sources such as generators or shore power. Its intelligent load management ensures seamless operation during power fluctuations, making it ideal for sensitive electronic equipment and critical loads.

Built with integrated anti-islanding protection and multiple country approvals, the MultiPlus-II is suitable for global deployment. It supports energy storage systems (ESS) by integrating with MPPT solar chargers or grid-tie PV inverters, providing flexible and scalable energy solutions. The device includes an external current sensor option for optimizing self-consumption and implementing PowerControl and PowerAssist functions, supporting currents up to 32A.

Additional features include an uninterrupted power supply (UPS) function that switches to inverter mode in less than 20 milliseconds during grid outages, ensuring continuous operation of connected devices. Remote monitoring and control are facilitated through compatibility with Victron's GX devices, allowing users to oversee and manage their system via the VRM app or portal from any location. This level of control supports system adjustments, auto-starting backup generators, and detailed system diagnostics.

The MultiPlus-II is constructed with a durable steel enclosure finished in blue RAL 5012, rated IP22 for protection against dust and water splashes. It features a robust transfer switch rated at 50A per leg, with screw terminal connections for AC input and M8 bolts for battery connections. Its operating temperature range from -40°F to +150°F ensures reliable performance under various environmental conditions. Designed with safety and compliance in mind, it adheres to international standards such as EN-IEC 60335 and IEC 61000 series for emissions and immunity, making it suitable for demanding energy environments.

Overall, the Victron Energy MultiPlus-II 12/3000 120V is an advanced power management solution that offers reliable, efficient, and flexible energy handling for complex systems. Its combination of inverter, charger, transfer switch, and remote monitoring capabilities makes it a comprehensive choice for integrating renewable energy, backup power, and energy storage in a single, easy-to-manage unit.

Features:

• PowerAssist technology to prevent overloads and boost power from external sources

• Built-in anti-islanding protection with multiple country approvals

• Seamless UPS functionality for uninterrupted power during grid failure

• Supports Energy Storage Systems (ESS) with MPPT Solar Chargers and PV Inverters

• Remote monitoring and control via Victron GX devices, VRM app, and portal

• High continuous power output with peak power of 5500 W for demanding applications

• Robust steel enclosure with IP22 protection rating for durability

• Transfer switch rated at 50A per leg for reliable power transfer

• Flexible AC input options supporting split and single-phase configurations

• Wide operating temperature range with fan-assisted cooling for harsh environments