Victron Energy MultiPlus-II 12/3000 Inverter/Charger – 120V, UL Approved with PowerAssist and Remote Monitoring

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 is a versatile inverter/charger designed to deliver reliable power in off-grid, backup, and energy storage systems. With a continuous output power of 2400 watts and a peak power of 5500 watts, it provides robust performance for demanding applications. Its innovative features include PowerAssist technology, which prevents overloads on limited AC sources such as generators or shore power connections by automatically reducing battery charging or boosting power from the battery when needed. This ensures stable power delivery without risking damage or interruptions.
The MultiPlus-II seamlessly integrates with Energy Storage Systems (ESS), allowing for flexible combinations with MPPT solar chargers or grid-tie PV inverters. Its built-in UPS functionality ensures uninterrupted power during grid outages or disconnections, switching within less than 20 milliseconds to keep sensitive electronics operational. The inverter’s advanced control capabilities are enhanced by remote monitoring and management options through a GX device like the Cerbo GX, accessible globally via the VRM app or web portal, enabling users to monitor and control their system from smartphones, tablets, or computers.
Constructed with durable steel and featuring an IP22 enclosure, the MultiPlus-II is built for demanding environments. It includes a 50A transfer switch, 50A maximum AC input current, and an auxiliary output rated at 32A. Its AC input voltage range is 90-140 VAC at 45-65 Hz, and it offers multiple communication ports for system integration, remote On-Off control, and parallel or three-phase operation. The device is equipped with comprehensive protections, a battery temperature sensor, and programmable relays for customized operation. Its efficient design and extensive approval standards make it suitable for various international applications, providing peace of mind with safety compliance and reliable performance.
This model is designed for ease of installation and operation, with M8 bolts for battery connection and screw terminals for AC connections. Weighing approximately 19 pounds and measuring roughly 22.8 inches long, 10.9 inches wide, and 5.8 inches high, it fits into a variety of energy systems. The MultiPlus-II is an essential component for users seeking a reliable, feature-rich power management solution capable of supporting complex energy needs with advanced monitoring and control features.

Features:

• PowerAssist technology prevents overloads by boosting power from the battery when needed

• Uninterrupted power supply (UPS) function ensures seamless transition during grid failure

• Remote monitoring and control via GX devices and VRM app for global access

• Energy Storage System (ESS) compatible for flexible energy management

• Built-in anti-islanding and extensive country approvals for worldwide use

• High efficiency up to 93% for optimal energy utilization

• Multiple communication ports for system integration and expansion

• IP22 rated steel enclosure with durable construction

• Supports parallel, split-phase, and three-phase operation

• Advanced protections and programmable relays for customized control