Description
High-capacity 120V power for a 12V energy system
The Victron MultiPlus-II 12/3000/120-50 brings inverter power, battery charging and AC transfer capability together in one system component. It is designed for a properly engineered 12V RV, marine or off-grid electrical system where dependable 120VAC power and substantial charging capacity matter.
This model delivers a 3,000VA inverter rating and 2,400W of continuous output at 25°C. When shore or generator AC is available, its 120A charger can recharge a compatible 12V battery bank. The 50A transfer switch supports a clean transition between AC input and inverter operation.
Why this model stands out
- One coordinated power component: inverter, battery charger and transfer switch are built into the MultiPlus-II platform.
- 12V system match: designed around a nominal 12V DC battery bank and 120VAC output.
- Serious charging capacity: up to 120A of battery charging from AC input.
- Mobile-use listing: the exact model is listed to UL 458.
Key specifications
| Model | Victron MultiPlus-II 12/3000/120-50 120V (UL 458) |
|---|---|
| Manufacturer part number | PMP122305122 |
| Nominal battery voltage | 12V DC |
| Inverter rating | 3,000VA; 2,400W continuous at 25°C |
| Inverter output | 120VAC ±2%, 60Hz ±0.1% |
| Maximum charge current | 120A |
| Transfer switch | 50A |
| Safety listing | UL 458 |
Choose the right AC configuration
This is the standard 120V version of the 12V 3000VA MultiPlus-II. If your system design specifically calls for the separate 2x120V split-phase configuration, select that model instead. Battery voltage, conductor size, overcurrent protection, AC distribution and battery-bank design should all be specified for the finished system before installation.
Need help matching an inverter/charger to your RV, marine or off-grid system? Cascade RV Solar Solutions can help you choose the right voltage, output and charging configuration before you order.
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