The Victron MultiPlus-II 48/4k5/55-32 230V combines the functions of an inverter, charger, and grid manager in a single, compact device. Designed for maximum efficiency and versatility, it offers seamless integration into PV, hybrid, and stand-alone systems. Its advanced electronics allow it to intelligently combine and optimally control energy sources such as the grid, generator, and battery.
With an output of 4.5 kVA and a charging capacity of 55A, the MultiPlus-II is ideal for medium to large energy systems. The PowerAssist function automatically supports the grid or generator when more power is needed at short notice. At the same time, the ESS (Energy Storage System) function optimizes self-consumption and increases independence from external energy suppliers.
The MultiPlus-II offers a high degree of flexibility in installation: whether in grid operation, as a stand-alone system, or in combination with solar charge controllers, the system can be customized to suit individual requirements. Remote monitoring in real time is also possible thanks to support for Victron components such as Cerbo GX or VRM Portal.
Key features
- 4.5 kVA inverter with integrated charging unit (55A)
- PowerControl & PowerAssist for grid and generator support
- Compatible with ESS systems for solar power storage
- Automatic switching between grid and battery operation
- High efficiency up to 96%
- Supports LiFePO4, AGM, gel, and lead-acid batteries
- Parallel connection and three-phase operation possible
- Remote monitoring via VRM portal or VictronConnect app
- Robust steel housing with passive cooling and IP22 protection
- Easy integration into new and existing energy systems
Areas of application
- Photovoltaic systems with battery storage
- Off-grid and hybrid systems with grid feed-in
- Emergency power and backup solutions for homes and businesses
- Boats, yachts, motorhomes, and mobile energy systems
Technical
| Model |
Victron MultiPlus-II 48/4k5/55-32 230V |
| Output |
4,500 VA / 3,600 W |
| Input voltage (DC) |
38–66 V |
| AC output |
230 V ±2% | 50 Hz ±0.1% |
| Charging current (DC) |
55 A |
| Max. AC transfer current |
32 |
| PowerAssist / PowerControl |
Yes |
| Efficiency |
Up to 96% |
| Idle power consumption |
Approx. 11 W (search mode 2 W) |
| Battery types |
LiFePO4, AGM, gel, lead acid |
| Communication |
VE.Bus, RS485, USB (MK3-USB), Bluetooth (with dongle) |
| Parallel operation / 3-phase |
Up to 6 devices |
| Operating |
-40 °C to +65 °C |
| Protection class |
IP22 |
| Dimensions (H × W × D) |
506 × 275 × 147 mm |
| Weight |
Approx. 30 kg |
| Material |
Sheet steel, powder-coated (RAL 5012 blue) |
| Safety standards |
EN/IEC 60335-1, EN/IEC 62109-1, EN 55014 |
The Victron MultiPlus-II 48/4k5/55-32 230V is the ideal choice for anyone looking for a compact, powerful, and intelligent energy solution. Whether as the heart of a PV system or as a self-sufficient backup system, this inverter offers the perfect combination of reliability, efficiency, and smart control.
