Victron Energy MultiPlus-II 48/3000 120V Inverter/Charger with PowerControl and PowerAssist

MultiPlus-II 48/3000 35-50 120V

The MultiPlus-II is a multifunctional inverter/charger with all the features of the MultiPlus, plus an external current sensor option, which extends the PowerControl and PowerAssist functions to 100A.

PowerControl PowerAssist - Boosting the Capacity of the Grid or a Generator

A maximum grid or generator current can be set. The MultiPlus-II will then take into account other AC loads and use whatever is extra for battery charging, thus preventing the generator or grid from being overloaded (PowerControl function).

PowerAssist takes the principle of PowerControl to a further dimension. Where peak power is so often required only for a limited period, the MultiPlus-II will compensate for insufficient generator, shore, or grid power with power from the battery. When the load reduces, the spare power is used to recharge the battery.

Solar Energy: AC Power Available Even During a Grid Failure

The MultiPlus-II can be used in off-grid as well as grid-connected PV and other alternative energy systems. It is compatible with both solar charger controllers and grid-tie inverters.

Two AC Outputs

The main output has no break functionality. The MultiPlus-II takes over the supply to the connected loads in the event of a grid failure or when shore/generator power is disconnected. This happens so fast (less than 20 milliseconds) that computers and other electronic equipment will continue to operate without disruption.

The second output is live only when AC is available on the input of the MultiPlus-II. Loads that should not discharge the battery, like a water heater, for example, can be connected to this output.

Virtually Unlimited Power Thanks to Parallel, Split Phase, and Three Phase Operation

Up to 6 Multis can operate in parallel to achieve higher power output. Six 48/3000/35 units, for example, will provide 15 kW / 18 kVA output power with 210 Amps charging capacity.

In addition to parallel connection, two units of the same model can be connected for a 240V split-phase output, and three units of the same model can be configured for three-phase output. But thats not all: up to 6 sets of three units can be connected in parallel per phase.

On-Site System Configuring, Monitoring, and Control

Settings can be changed in a matter of minutes with VEConfigure software (computer or laptop and MK3-USB interface needed).

Several monitoring and control options are available: Color Control GX, Venus GX, Octo GX, CANvu GX, laptop, computer, Bluetooth (with the optional VE.Bus Smart dongle), Battery Monitor, Digital Multi Control Panel.

Remote Configuring and Monitoring

Install a Color Control GX or other GX product to connect to the internet. Operational data can be stored and displayed on our VRM (Victron Remote Management) website, free of charge. When connected to the internet, systems can be accessed remotely, and settings can be changed.

Specifications:

• PowerControl PowerAssist: Yes
• Transfer Switch: 50A
• Maximum AC Input Current: 50A

Inverter Specifications:

• DC Input Voltage Range: 38 -66 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
• Peak Power: 5500 W
• Maximum Efficiency: 95%
• Zero Load Power: 11 W
• Zero Load Power in AES Mode: 7 W
• Zero Load Power in Search Mode: 2 W

Charger Specifications:

AC Input: Input Voltage Range 90-140 VAC / Input Frequency: 45 65 Hz

Charge Voltage Absorption: 57,6 V

Charge Voltage Float: 55,2 V

Storage Mode: 52,8 V

Maximum Battery Charge Current: 35 A

Battery Temperature Sensor: Yes

General Specifications:

• Auxiliary Output: 32 A
• External AC Current Sensor (optional): 100 A
• Programmable Relay: Yes
• Protection: 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: 19 kg / 42 lb.
• Dimensions (hxwxd): (mm) 572 x 277 x 147 / (inch) 22.5 x 10.9 x 5.8

Standards:

• Listings: UL1741 pending
• Safety: EN-IEC 60335-1, EN-IEC 60335-2-29, CSA 22.2 107.1-16
• Emission, Immunity: EN 55014-1, EN 55014-2, EN-IEC 61000-3-2, EN-IEC 61000-3-3, EC 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 48/3000 120V inverter/charger combines advanced power management features with versatile installation options. Designed for off-grid, grid-connected, and hybrid energy systems, this unit offers a continuous power output of up to 2,400 watts and peak power of 5,500 watts, making it suitable for a wide range of applications. The integrated PowerControl and PowerAssist functions allow the unit to optimize power usage from the grid or generator while preventing overloads, ensuring efficient operation and extending system lifespan. External current sensor support extends PowerControl and PowerAssist capabilities to up to 100A, providing greater flexibility for larger systems or multiple loads. The multi-functional inverter seamlessly integrates with solar energy setups, providing AC power even during grid outages, and is compatible with both solar chargers and grid-tie inverters for renewable energy integration. Its dual AC outputs enable continuous operation of critical loads during power failures, with the main output switching in less than 20 milliseconds to ensure uninterrupted performance. The second output is ideal for loads that should not draw from the battery, such as water heaters. The MultiPlus-II supports parallel, split phase, and three-phase operation, allowing up to six units to work together for increased power capacity—up to 15 kW or 18 kVA—making it suitable for large-scale applications. System configuration, monitoring, and control are simplified through VEConfigure software, and remote access is available via integration with Victron’s GX series devices, enabling system adjustments and data monitoring over the internet. The unit’s robust construction features a steel enclosure with IP22 protection, designed to withstand demanding environments, and includes multiple communication ports for system integration and remote management. With a wide operating temperature range and multiple safety standards compliance, the Victron Energy MultiPlus-II provides reliable, efficient, and scalable power management for residential, commercial, and off-grid systems.

Features:

• PowerControl and PowerAssist functions to optimize grid or generator power usage

• External AC current sensor support up to 100A for increased system capacity

• Seamless transfer switch with less than 20 milliseconds response time for uninterrupted power supply

• Dual AC outputs for critical load management and non-battery discharge loads

• Supports parallel, split phase, and three-phase configurations for scalable power output

• Compatible with solar chargers and grid-tie inverters for renewable energy integration

• Remote monitoring and system configuration via Victron GX series devices and VRM portal

• Built-in communication ports for system integration and remote control

• Robust steel enclosure with IP22 protection suitable for demanding environments

• Wide operating temperature range with fan-assisted cooling for reliable operation