Victron Energy MultiPlus-II 12/3000 Inverter/Charger – 120V, UL Approved

MultiPlus-II 12/3000 - 120-50 - 120V - UL Approved

MultiPlus-II 48/3000 - 35-50 - 120V - UL ApprovedThe MultiPlus-II, an inverter/charger, 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 increasingly long list of country approvals.

PowerAssist

The MultiPlus-II will prevent the 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 shoreside 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.

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 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

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: 13 W
• Zero Load Power in AES Mode: 9 W
• Zero Load Power in Search Mode: 3 W

Charger Specifications:

• AC Input: Input Voltage Range 90-140 VAC / Input Frequency: 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: Yes (32 A)
• 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: M8 bolts
• 120 V AC-Connection: Screw terminals 13 mm (6 AWG)
• Weight: 9 kg
• Dimensions (hxwxd) (mm): 578 x 277 x 148

Standards:

• Safety: EN-IEC 60335-1, EN-IEC 60335-2-29, UL458
• 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 inverter/charger offers a versatile power solution for off-grid and backup systems, combining advanced inverter and charger functionalities in a compact design. Its robust build and innovative features make it suitable for a wide range of applications, including energy storage systems, mobile setups, and emergency backup power. The unit provides seamless power conversion and management, ensuring reliable operation in demanding environments.
The MultiPlus-II supports PowerAssist technology, enabling it to prevent overloads from limited AC sources such as generators or shore power connections. When an overload risk is detected, the system automatically reduces battery charging and then boosts the generator or shore power output by drawing energy from the batteries. This dynamic power management enhances system reliability and efficiency, especially during high-demand periods. Additionally, the inverter can be integrated into Energy Storage Systems (ESS) with compatibility for MPPT solar chargers and grid-tie PV inverters, providing a flexible platform for renewable energy projects.
Its built-in UPS function guarantees uninterrupted AC power, switching to inverter mode within less than 20 milliseconds during grid or power source failures. This rapid transfer ensures sensitive electronic devices, including computers and medical equipment, operate without disruption. When paired with a Victron GX device such as the Cerbo GX, users can remotely monitor and control the system via the VRM app or portal, offering real-time access from smartphones, tablets, or PCs. The system's extensive control options include remote on/off commands, system auto-start, and configuration adjustments, providing full oversight regardless of location.
The MultiPlus-II has a continuous output power of 2,400 watts at 25°C, with peak power reaching up to 5,500 watts, making it capable of handling demanding loads. Its high efficiency of 93% minimizes energy loss, while features such as a programmable relay, external current sensing, and multiple communication ports support complex system integrations. Designed with safety and durability in mind, the enclosure is constructed from steel, coated in a durable blue finish, and rated IP22 for protection against dust and water ingress. The unit operates efficiently across a wide temperature range, with fan-assisted cooling ensuring optimal performance even in hot environments.
Overall, the Victron Energy MultiPlus-II 12/3000 inverter/charger is a reliable, feature-rich solution for advanced power management, combining inverter, charger, and transfer switch capabilities in a single compact device. Its compatibility with remote monitoring, energy storage, and renewable energy systems makes it an excellent choice for professional and dedicated DIY installations seeking efficiency, flexibility, and peace of mind.

Features:

• PowerAssist technology for overload prevention and power boosting

• Built-in uninterruptible power supply (UPS) function for seamless transfer during outages

• Supports Energy Storage System (ESS) integration with solar chargers and PV inverters

• Remote monitoring and control via Victron VRM platform with GX devices

• Transfer switch rated at 50A for reliable power switching

• Maximum AC input current of 50A for high-capacity applications

• Continuous inverter power of 2,400 watts with a peak power of 5,500 watts

• High efficiency of 93% to minimize energy loss

• Comprehensive safety and compliance standards including UL and IEC certifications

• Robust steel enclosure with IP22 rating for durability and protection in various environments