Victron Energy MultiPlus-II 12V 3000VA 2x120V UL Approved Pure Sine Wave Inverter Charger, 50A Transfer Switch, UPS, PowerAssist, ESS Compatible

The Victron Energy MultiPlus-II 12V 3000VA 2x120V UL Approved Inverter Charger (Model 12/3000 2x120V, MPN PMP122305102) combines a pure sine wave inverter, an integrated battery charger, and a 50A transfer switch in one compact unit. Built for marine, RV, off-grid solar, backup power, and energy storage systems, this UL Approved 12 volt inverter charger delivers dual 120VAC output, PowerControl, PowerAssist, UPS backup, and remote system monitoring for North American power systems.

UL Approved 12V Inverter Charger with Dual 120V Output

The MultiPlus-II delivers 3000VA of clean pure sine wave power through a dual 120VAC output design, giving flexible AC distribution for RV, marine, and off-grid installations. It pairs the trusted MultiPlus platform with MultiGrid technology, including built-in anti-islanding protection and self-consumption optimization through external current sensing.

PowerAssist and PowerControl for Generators and Shore Power

PowerControl lets you set a maximum AC input current, and the MultiPlus-II reduces battery charging as needed to prevent overloading generators or shore power connections. When demand exceeds the available AC input, PowerAssist supplements it with energy from the battery bank to handle temporary peak loads.

Built-In UPS Backup Power

When shore, grid, or generator power is interrupted, the MultiPlus-II switches to inverter operation in less than 20 milliseconds. Computers, communication equipment, and other sensitive electronics continue operating without interruption.

Victron ESS Energy Storage System Compatible

The MultiPlus-II is a core component of Victron Energy Storage Systems (ESS), integrating with MPPT solar charge controllers and grid-connected solar inverters for flexible energy management in backup power, solar storage, and off-grid applications.

Remote Monitoring and Control

Paired with a Victron GX device such as the Cerbo GX, the MultiPlus-II can be monitored and controlled locally or remotely. Check battery status, adjust settings, and manage connected equipment from a phone, tablet, laptop, or computer.

Key Features

• 12V 3000VA pure sine wave inverter charger
• Dual 120VAC output (2x120V)
• UL Approved for North American applications
• 50A transfer switch
• Integrated adaptive battery charger
• PowerControl with adjustable AC input current limit
• PowerAssist boosts AC power with battery energy
• UPS function with transfer under 20 ms
• Built-in anti-islanding protection
• Victron ESS energy storage system compatible
• Works with MPPT solar chargers and grid-tie inverters
• Remote monitoring with Victron GX devices

Applications

• RV and luxury camper electrical systems
• Boats and onboard marine power systems
• Off-grid solar installations
• Home backup and energy storage
• Generator-assisted power systems
• Emergency backup power
• Mobile energy systems

Specifications

The UL Approved Victron Energy MultiPlus-II 12V 3000VA 2x120V Inverter Charger delivers dual 120V pure sine wave power, intelligent battery charging, UPS backup, and ESS-ready energy management for professional RV, marine, off-grid, and home backup systems.