Victron
Victron MultiPlus-II 48/5000/70-50 Inverter/Charger
£914.40
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PMP482505012
The Victron MultiPlus-II 48/5000/70-50 provides 5000 VA continuous output (4000 W at 25°C) with 9000 W peak from a 48 V battery bank. It pairs a 70 A charger with a 50 A transfer switch, plus PowerControl and PowerAssist, and supports parallel, three-phase and ESS operation with anti-islanding.
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Available for collection or delivery in ~2 days
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Victron MultiPlus-II 48/5000/70-50 is a high output 48 V multifunctional inverter/charger that brings together a strong sine wave inverter, a 70 A battery charger and a fast 50 A transfer switch in a single steel enclosure. The 48 V design keeps DC currents and cable losses low, making this 5000 VA unit ideal for substantial professional marine, vehicle and off-grid systems, and its built-in anti-islanding makes it well suited to grid-tied Energy Storage Systems that must coexist safely with the utility.
The unit's intelligence comes from PowerControl and PowerAssist; PowerControl caps the current drawn from a shore or generator supply so it is never overloaded, while PowerAssist contributes up to 5000 VA of battery power to smooth out brief load peaks. When the incoming supply is interrupted, changeover to inverter operation happens in less than 20 milliseconds, keeping connected loads running without a flicker, and an optional external AC current sensor (50 A or 100 A) can extend the PowerControl and PowerAssist range.
A second AC output sheds non critical loads the moment the mains disappears, and the system grows easily, supporting up to six units in parallel or a three phase layout for the most demanding installations. Configuration is handled in VEConfigure through an MK3-USB interface, and adding a GX device such as a Cerbo GX delivers local monitoring plus remote oversight and data logging via the free VRM portal.
PRODUCT DETAILS
- Combined 48 V inverter, 70 A battery charger and 50 A transfer switch in one unit
- 5000 VA continuous output, 4000 W at 25°C, 9000 W peak power
- PowerControl and PowerAssist manage limited shore and generator supplies
- Switches to battery power in under 20 ms during a grid failure
- Two AC outputs, the second for sheddable non-critical loads
- Parallel and three-phase capable, up to six units for higher output
- ESS ready with integrated anti-islanding protection
- GX device and VRM portal monitoring for local and remote oversight
No exploded diagram available for this product.
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Key specifications
| System voltage | 48 V |
| Continuous output power | 5000 VA |
| Continuous output power at 25°C | 4000 W |
| Peak power | 9000 W |
| Maximum charge current | 70 A |
| Transfer switch | 50 A |
Inverter
| DC input voltage range | 38 to 66 V |
| Output voltage / frequency | 230 VAC +/-2%, 50 Hz +/-0.1% |
| Cont. output power at 25°C (VA) | 5000 VA |
| Cont. output power at 25°C (W) | 4000 W |
| Cont. output power at 40°C (W) | 3700 W |
| Cont. output power at 65°C (W) | 3000 W |
| Peak power | 9000 W |
| Maximum efficiency | 96 % |
| Zero load power | 18 W |
| Zero load power in AES mode | 12 W |
Charger
| Charge voltage 'absorption' | 57.6 V |
| Charge voltage 'float' | 55.2 V |
| Storage mode | 52.8 V |
| Maximum charge current | 70 A |
| Battery temperature sensor | Yes |
Connectivity & control
| VE.Bus communication port | For parallel and three phase operation, remote monitoring and system integration |
| General purpose comms port | Yes, 2x |
| Programmable relay | Yes (general alarm, DC under voltage or genset start/stop) |
| Remote on/off | Yes |
| External AC current sensor (optional) | 50 A or 100 A |
Protection
| Protection | Output short circuit, overload, battery voltage too high, battery voltage too low, temperature too high, 230 VAC on inverter output, input voltage ripple too high |
Environmental
| Operating temperature range | -40 to +65 °C (fan assisted cooling) |
| Humidity (non-condensing) | Max. 95 % |
| Maximum altitude | 2000 m |
Physical
| Material & colour | Steel, blue RAL 5012 |
| Protection category | IP22 |
| Battery connection | M8 bolts |
| 230 VAC connection | Bolts M6 |
| Weight | 30 kg |
| Dimensions (h x w x d) | 565 x 320 x 149 mm |
Conformance
| Safety | EN-IEC 60335-1, EN-IEC 60335-2-29, EN-IEC 62109-1, EN-IEC 62109-2 |
| Emission / Immunity | EN 55014-1, EN 55014-2, EN-IEC 61000-3-2, EN-IEC 61000-3-3, IEC 61000-6-1/-6-2/-6-3 |
How fast does the MultiPlus-II switch to battery power during a grid failure?
The transfer to inverter operation happens in less than 20 milliseconds, so computers and other electronic equipment continue to operate without disruption.
What do PowerControl and PowerAssist do?
PowerControl lets you set a maximum shore or generator current; the unit then uses only the spare capacity for battery charging to avoid overloading the source. PowerAssist goes further by adding battery power to support the supply during short peaks, then recharges the battery when the load drops.
Can the MultiPlus-II be used in parallel or three-phase systems?
Yes. Up to six units can be connected in parallel for higher output, and three units of the same model can be configured for three-phase operation, with up to six sets of three paralleled for larger systems.
Is an external current sensor required?
No, it is optional. An external AC current sensor (50 A or 100 A) can be added to extend the PowerControl and PowerAssist range and to optimise self-consumption with external current sensing.
Can the MultiPlus-II be monitored remotely?
Yes. When connected to a GX device such as a Cerbo GX, system data can be stored and viewed on the free VRM portal, and settings can be changed remotely over the internet.
