Description
Victron MultiPlus-II 12/3000/120-50 2x120V (UL) Pure Sine Wave Inverter/Charger
The MultiPlus-II 2x120V is a robust all-in-one inverter/charger tailored for standard 50A 120/240VAC split-phase mobile and off-grid power systems in North America. Designed for maximum flexibility, it accommodates both split-phase (120/240V) and single-phase (120V) power sources—whether from shore power or a generator—while ensuring full 50A passthrough to AC loads and charging systems.
In cases where only a 120V source is available, the MultiPlus-II smartly draws power from Line 1 (L1) and internally bridges the outputs to maintain 120V supply across both L1 and L2 legs. In the event of power loss, the unit instantly transitions to inverter mode, keeping loads active by producing single-phase 120V output to both legs. This setup protects batteries by allowing 240V loads only when true split-phase input is present, preventing unnecessary drain.
Key Features
Flexible Input & Intelligent Output Management
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Accepts 120/240V split-phase or 120V single-phase AC input
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Provides 120V output on both legs in inverter mode
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240V output supported only when split-phase AC is available—safeguards battery capacity
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All charging current drawn from L1 input
Uninterrupted AC Power Supply
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Fast automatic switch to inverter mode upon power loss:
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L1 Output: Switchover time < 18 ms – ideal for sensitive electronics
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L2 Output: Restores power in approx. 40 ms
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Internal bridging ensures uninterrupted 120V to both legs of your panel
PowerAssist and PowerControl
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PowerControl: Sets a safe input current limit to prevent overloading shore/generator input
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PowerAssist: Supplements incoming AC power with battery energy during peak demand
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Automatically recharges batteries when demand drops
Dual AC Outputs for Load Prioritization
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Primary Output (L1): Supports critical loads with uninterrupted power
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Secondary Output (L2): Enabled only when AC input is active—ideal for non-essential loads like air conditioners or water heaters
Expandable Power System
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Parallel-ready: Combine up to six units for greater output capacity
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Three-phase operation: Configure three units for balanced three-phase systems
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In parallel/3-phase setups, L2 is disabled on secondary units for system consistency
Easy System Configuration & Monitoring
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Configure via VEConfigure software and MK3-USB interface
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Monitor and control through:
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Cerbo GX
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Venus GX
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Color Control GX
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CANvu GX
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VE.Bus Smart Dongle (Bluetooth)
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Digital Multi Control Panel
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Remote Monitoring via VRM
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Pair with a GX device to access the Victron Remote Management (VRM) Portal
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Monitor and control system parameters remotely from anywhere via web browser or mobile device
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Real-time analytics, alerting, and configuration tools at your fingertips
Specification
| MultiPlus-II 2x120V 12/3000/120-50 & 24/3000/70-50 Specifications | |
|---|---|
| PowerControl & PowerAssist | Yes (on L1 input) |
| Transfer Switch | 50 A |
| Max AC Input Current | 50 A (each leg) |
| INVERTER | |
| DC Input Voltage Range | 9.5–17 V (12V) / 19–33 V (24V) |
| Output Voltage (Inverter Mode) | 120 VAC ± 2% |
| Frequency | 60 Hz ± 0.1% (adjustable to 50 Hz) |
| Continuous Output Power at 25°C | 3000 VA / 2400 W |
| Continuous Output Power at 40°C | 2200 W |
| Continuous Output Power at 65°C | 1700 W |
| Maximum Apparent Feed-in Power | 2500 VA |
| Peak Power | 5500 W |
| Maximum Efficiency | 93% (12V) / 94% (24V) |
| Zero Load Power | 15W (12V) / 11W (24V) |
| Zero Load Power (AES Mode) | 10W (12V) / 8W (24V) |
| Zero Load Power (Search Mode) | 4W |
| CHARGER | |
| AC Input (Split Phase) | 180–280 VAC, 45–65 Hz |
| AC Input (Single Phase) | 90–140 VAC, 45–65 Hz |
| Absorption Voltage | 14.4 V (12V) / 28.8 V (24V) |
| Float Voltage | 13.8 V (12V) / 27.6 V (24V) |
| Storage Mode | 13.2 V (12V) / 26.4 V (24V) |
| Max Battery Charge Current | 120 A (12V) / 70 A (24V) |
| Battery
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