Descripción
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The Victron Energy MultiPlus-II GX 48/4k5/55-32 is a multifunctional inverter/charger designed for 48V battery systems. It integrates a sine wave inverter, a battery charger and a GX device in a single enclosure, reducing the number of separate devices required to monitor and control the installation.
The model delivers 4kW of continuous output power at 25°C and can temporarily support higher loads, reaching a peak power of 7kW. The integrated charger can supply up to 55A at 25°C.
The product can be used in grid-connected installations, off-grid systems, mobile applications and generator-powered systems. It must be configured according to the battery type, available energy sources and installation requirements.
Supplying loads during a grid outage
When the grid or generator supply is interrupted, the MultiPlus-II GX automatically switches to the energy stored in the batteries. Critical loads connected to the main AC output can continue operating.
The product also features a 32A auxiliary output. This can be used for loads that should operate only when an AC source is available, helping preserve the energy stored in the batteries.
Integrated GX system
The built-in GX device allows users to monitor the parameters of the battery, inverter and compatible solar charge controllers. The information can be viewed locally on the two-line display or remotely through the Victron Remote Management platform – VRM.
Internet connectivity is available via Wi-Fi or Ethernet. USB, VE.Direct and BMS-CAN interfaces are also provided for integrating other compatible equipment.
PowerControl and PowerAssist
The PowerControl function allows the current drawn from the grid or generator to be limited. If the available power is restricted, the unit automatically reduces the current used for battery charging, preventing the AC source from being overloaded.
PowerAssist can temporarily supplement the power supplied by the grid or generator using energy from the batteries. Once consumption decreases, the available power can be used again to recharge the batteries.
Parallel and three-phase operation
Multiple MultiPlus-II units can be configured in parallel to increase the system’s output power and charging capacity. The product can also be integrated into three-phase configurations. Only one unit with GX functionality is required for a parallel or three-phase system.
Main features
- Sine wave inverter and battery charger
- Integrated GX system
- 48V nominal battery voltage
- Continuous output power of 4kW at 25°C
- Peak power of 7kW for one minute
- Maximum charging current of 55A at 25°C
- Built-in 32A transfer switch
- Two AC outputs
- PowerControl and PowerAssist functions
- Local monitoring via the GX display
- Remote monitoring and configuration via VRM
- Parallel and three-phase operation
- Programmable relay
- Remote on/off control
Recommended applications
- Photovoltaic systems with battery storage
- Off-grid installations
- Backup power systems
- Homes and commercial premises
- Motorhomes and specialist vehicles
- Boats
- Generator-powered systems
- Parallel and three-phase configurations
Technical specifications
| Feature |
Specification |
| Manufacturer |
Victron Energy |
| Model |
MultiPlus-II GX 48/4k5/55-32 |
| Manufacturer part number |
PMP482406000 |
| Product type |
Inverter/charger with integrated GX system |
| Battery voltage |
48V |
| DC input voltage range |
38–60V |
| AC output voltage |
230V ±2% |
| Output frequency |
50Hz ±0.1%, adjustable to 60Hz |
| Continuous output power at 25°C |
4kW |
| Continuous output power at 40°C |
3.7kW |
| Continuous output power at 65°C |
3kW |
| Time-limited power |
4.5kW for up to 2 hours; 6kW for up to 25 minutes from a cold start |
| Peak power |
7kW for one minute |
| Maximum feed-in power |
4kW |
| Maximum efficiency |
95% |
| Zero-load power |
20W |
| Zero-load power in AES mode |
13W |
| Zero-load power in Search mode |
8W |
| AC input voltage |
187–265V |
| AC input frequency |
45–65Hz |
| Maximum AC input current |
32A |
| Transfer switch |
32A |
| Maximum charging current at 25°C |
55A |
| Maximum charging current at 40°C |
50A |
| Absorption voltage |
57.6V |
| Float voltage |
55.2V |
| Storage voltage |
52.8V |
| Auxiliary output |
Yes, 32A |
| Interfaces |
BMS-CAN, USB, Ethernet, VE.Direct, Wi-Fi |
| VE.Bus communication |
Yes |
| External current sensor |
100A, optional |
| Programmable relay |
Yes |
| Remote on/off |
Yes |
| Operating temperature |
-40°C to +65°C |
| Maximum humidity |
95%, non-condensing |
| Maximum altitude |
2,000m |
| Protection rating |
IP21 |
| Battery connection |
M8 bolts |
| AC connection |
Screw terminals, maximum 13mm² |
| Enclosure material |
Steel |
| Colour |
Blue, RAL 5012 |
| Dimensions |
590 × 275 × 149mm |
| Weight |
21.4kg |
Battery compatibility
The MultiPlus-II GX can be configured for lithium, lead-acid, zinc-bromine and other supported battery technologies. The charger parameters must be configured according to the battery manufacturer’s requirements.
The BMS-CAN port is intended for compatible CAN-managed batteries communicating at 500kbps. It is not a standard VE.Can port.
Compatibility depends on the battery model, BMS protocol and firmware version. We recommend checking the system configuration before purchase.
Protections
The product includes protection against:
- Output short circuit
- Overload
- Excessively high battery voltage
- Excessively low battery voltage
- Excessive temperature
- AC voltage present at the inverter output
- Excessive input voltage ripple
Optional accessories
- 100A external current sensor
- Battery temperature sensor
- Victron GX GSM modem
- Digital Multi Control panel
- GSM antenna and GPS antenna
- Compatible Victron equipment for system expansion
