Reliable Power Management Using Victron MultiPlus-II 12-3000-120-50 120V Inverter Charger
The Victron MultiPlus-II 12/3000/120-50 120V Inverter Charger comes in three options: standard 120V, 120V with UL458 certification, and 2x120V with UL458 certification. All models offer powerful inverter and charger performance, supporting both split phase 120/240V and single phase 120V inputs. They feature seamless AC input mirroring, dual AC outputs, and advanced PowerControl and PowerAssist technology for smooth, reliable operation.
Using the Victron MultiPlus-II brings several key advantages. It intelligently manages available power by drawing extra current for battery charging without overloading your grid or generator, and boosts supply with battery energy during peak demands. The seamless transition to inverter power ensures that sensitive electronics like computers run uninterrupted during outages. With the ability to parallel up to six units or configure for three-phase operation, the system can scale up to meet any power requirement. Plus, configuration, monitoring, and remote management are incredibly easy with Victron’s VEConfigure software, Cerbo GX, VRM online portal, and optional Bluetooth connectivity.
The Victron MultiPlus-II is perfect for a wide range of applications, including RVs, boats, off-grid homes, mobile workstations, and backup power setups. Whether you're maintaining continuous operation for essential electronics, supporting off-grid energy systems, or enhancing generator performance in mobile installations, the MultiPlus-II delivers reliable, flexible power exactly where and when you need it. Thanks to its innovative design and robust feature set, it's a trusted choice for professional installers and DIY enthusiasts alike.
MultiPlus-II 12/3000/120-50 120V Overview
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Current sensor 100A:50mA
To implement PowerControl and PowerAssist and to optimize self-consumption with external current sensing.
Digital Multi Control Panel
A convenient and low-cost solution for monitoring and control.
Includes an on/off switch, charger-only mode, LED readout, and rotary knob for setting PowerControl and PowerAssist levels.
Interface MK3-USB
Used to configure the MultiPlus via VictronConnect or VE.Configure software.
Connects to the MultiPlus with an RJ45 UTP cable and plugs into a USB port.
VictronConnect App
Use the app to monitor or configure the MultiPlus from your smartphone, tablet, or PC.
VE.Bus Smart Dongle
Enables monitoring and control via Bluetooth using the VictronConnect app.
Also measures battery voltage and temperature.
MultiPlus-II 12/3000/120-50 120V Features
âš¡ Flexible AC Input and Output Options
- Supports both 120V and 120/240V split-phase sources.
- Always provides a stable 120V output when in inverter mode.
🔄 Automatic AC Input Mirroring
- Mirrors available AC input directly to the output for seamless operation.
- Ensures smooth transition between shore, grid, or generator power.
🔋 Efficient Battery Charging
- Draws charging power from the preferred input line (L1) for efficient energy use.
- Prioritizes load demands while optimizing battery charging.
🔌 Reliable Inverter Operation
- Switches automatically to inverter mode during power outages.
- Provides 120V single-phase output to loads on either line (L1 or L2).
🚀 PowerControl and PowerAssist Technology
- Prevents overloading of grid or generator by managing current draw.
- Boosts power availability by drawing from the battery during peak demands.
🔀 Dual AC Outputs
- Main output ensures uninterrupted power to sensitive electronics.
- Auxiliary output prevents battery drain by only operating with active AC input.
â±ï¸ Seamless Transfer Time
- Less than 18ms transfer on L1 output for continuous operation of computers and electronics.
- Approximately 40ms transfer on L2 output for non-critical loads.
âž• Parallel and Three-Phase Capability
- Up to six units can operate in parallel for higher total output.
- Three units can be configured for three-phase power setups.
ðŸ› ï¸ Easy On-Site Configuration and Monitoring
- Adjust settings quickly with VEConfigure software and MK3-USB interface.
- Monitor and control via Cerbo GX, Color Control GX, laptop, or optional Bluetooth dongle.
🌠Remote Monitoring and Management
- Connect to the internet for remote access through the Victron VRM portal.
- Change settings and view operational data anytime, anywhere for free.
MultiPlus-II 12/3000/120 Warranty
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Duration: 5 years from the original purchase date
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Coverage: Defects in materials and workmanship
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Process: Return the product with the purchase receipt to the retailer
What's in the Box?
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MultiPlus-II 2x120V Inverter/Charger unit
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Battery temperature sensor
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User manual / installation guide
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Mounting hardware (basic screws or brackets)
MultiPlus-II 12/3000/120-50 Specifications
| INVERTER |
| DC Input voltage range |
9.5 – 17 V |
| Output when in inverter mode |
120 VAC ± 2%
Frequency: 60 Hz ± 0.1% |
| Cont. output power at 25 °C |
3000 VA |
| Cont. output power at 25 °C (watts) |
2400 W |
| Cont. output power at 40 °C |
2200 W |
| Cont. output power at 65 °C |
1700 W |
| Maximum apparent feed-in power |
2500 VA |
| Peak power |
5500 W |
| Maximum efficiency |
93% |
| Zero load power |
15 W |
| Zero load power in AES mode |
10 W |
| Zero load power in Search mode |
4 W |
| CHARGER |
| AC Input |
Split phase: 180-280 VAC 45–65 Hz
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 |
120 A |
| Battery temperature sensor |
Yes |
| GENERAL |
| Auxiliary output |
50 A (each leg) |
| External AC current sensor (optional) |
100 A |
| Programmable relay |
Yes |
| Protection |
Yes |
| VE.Bus communication port |
For parallel and three phase operation, remote monitoring, and system integration |
| General purpose com. port |
Yes |
| Remote on-off |
Yes |
| Operating temperature range |
-40 to +65°C (-40 to 150°F) Fan assisted cooling |
| Humidity (non-condensing) |
Max 95% |
| ENCLOSURE |
| Material & Colour |
Steel, blue RAL 5012 |
| Protection category |
IP22 |
| Battery-connection |
2x2 M8 bolts |
| 120/240 VAC-connection |
Screw terminals 21 mm² (4 AWG) |
| Weight |
29 kg (64 lb) |
| Dimensions (h x w x d) |
578 x 275 x 148 mm (23 x 11 x 6 inch) |
| STANDARDS |
| Safety |
EN-IEC 60335-1, EN-IEC 60335-2-29, UL 458 |
| Battery-connection |
EN 55014-1, EN 55014-2 |
| Emission, Immunity |
EN-IEC 61000-3-2, EN-IEC 61000-3-3, EN-IEC 61000-6-1, EN-IEC 61000-6-2, EN-IEC 61000-6-3 |
Victron MultiPlus-II 12/3000/120-50 120V FAQ's
Victron MultiPlus-II 12/3000/120-50 FAQ
1. What voltage input does the Victron MultiPlus-II 12/3000/120-50 support?
The unit supports both single-phase 120V and split-phase 120/240V AC inputs.
2. What are the continuous power ratings of the inverter at different temperatures?
- 3000 VA / 2400 W at 25°C
- 2200 W at 40°C
- 1700 W at 65°C
3. Can I monitor and configure the MultiPlus-II remotely?
Yes, remote monitoring and configuration are possible using the Cerbo GX, Color Control GX, Victron VRM portal, and the VictronConnect app via Bluetooth.
4. What’s included in the box with the Victron MultiPlus-II 12/3000/120-50?
It includes the MultiPlus-II Inverter/Charger unit, battery temperature sensor, user manual/installation guide, and mounting hardware.
5. How quickly does the inverter switch to backup power during an outage?
It has a seamless transfer time of less than 18 milliseconds on the L1 output and about 40 milliseconds on the L2 output.
6. Can multiple MultiPlus-II units be connected together?
Yes, up to six units can be connected in parallel for higher output, or three units can be configured for three-phase setups.
7. What protective features are built into the MultiPlus-II?
The unit includes integrated protection and a programmable relay for enhanced system safety.
8. What is the warranty period for the Victron MultiPlus-II 12/3000/120-50?
The warranty is 5 years from the original purchase date, covering defects in materials and workmanship.
9. What is the maximum battery charging current?
The MultiPlus-II provides up to 120 amps of maximum battery charging current.
10. What communication ports are available on the MultiPlus-II?
It features a VE.Bus communication port for parallel and three-phase operation, remote monitoring, and system integration, as well as a general-purpose communication port.
Manuals and PDF's
 Victron MultiPlus-II 12-3000-120-50 Sales Sheet
