Victron Energy Inverter / Chargers

MULTIPLUS II

The Victron Energy MultiPlus-II is a multifunction inverter/charger designed to provide a reliable power supply and intelligent energy management for residential, industrial, mobile and off-grid applications. It combines a pure sine wave inverter, a high-performance battery charger and an ultra-fast transfer switch in a single unit, ensuring continuous operation even during power outages.
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The Victron MultiPlus-II combines a high-performance inverter, a powerful battery charger and an automatic transfer switch in a single unit, ensuring a continuous and reliable power supply for virtually any type of installation.

Its versatility makes it suitable for grid-connected and off-grid systems, marine applications, special-purpose vehicles, residential self-consumption, industrial installations and hybrid solar energy systems. Thanks to its compatibility with Victron MPPT solar charge controllers and grid-tied photovoltaic inverters, it provides a complete solution for Energy Storage Systems (ESS).

One of its main advantages is the PowerAssist technology, which automatically supplements power from the grid or a generator using the energy stored in the batteries whenever temporary peak loads occur. This prevents overloading the available power source while ensuring uninterrupted operation of critical loads.

The PowerControl function also allows the maximum current drawn from the grid or generator to be limited, using only the available capacity to charge the batteries and preventing overloads or unnecessary breaker trips in installations with limited power availability.

The MultiPlus-II incorporates an ultra-fast transfer switch capable of keeping critical loads powered during a grid failure with a transfer time of less than 20 milliseconds, preventing interruptions to computers, electronic equipment, communication systems and other sensitive devices.

It also features a second AC output, designed to supply only those loads that should operate when an external AC source is available, preventing unnecessary battery discharge.

Another of its key strengths is its scalability. It supports parallel and three-phase configurations, allowing multiple units to be combined to increase available power and adapt to larger installations without changing the overall system architecture.

For self-consumption systems with battery storage, it incorporates advanced Energy Storage System (ESS) functionality, including anti-islanding protection, self-consumption optimization and the ability to prevent excess solar energy from being fed back into the grid using an external current sensor or energy meter. Even during a power outage, it continues supplying priority loads automatically using the energy stored in the batteries.

Integration with the Victron ecosystem is another of its major strengths. It can be configured using VEConfigure, monitored through Cerbo GX or Ekrano GX devices and remotely supervised from anywhere via the Victron Remote Management (VRM) portal. It also supports Bluetooth monitoring through the VE.Bus Smart Dongle accessory and configuration using the VictronConnect application.

The new MultiPlus-II models also stand out for offering higher power density, improved thermal performance and more available power per unit of volume, making them an ideal solution for installations where space is a critical factor.

Key Features

  • High-performance inverter and battery charger integrated into a single unit.
  • Compatible with both grid-connected and off-grid systems.
  • Energy Storage System (ESS) functionality.
  • PowerAssist technology to handle peak power demands.
  • PowerControl function to limit AC input current.
  • Ultra-fast automatic transfer switching (<20 ms).
  • Two independent AC outputs.
  • Compatible with Victron MPPT solar charge controllers and grid-tied PV inverters.
  • Parallel and three-phase operation.
  • Optimized solar self-consumption.
  • Integrated anti-islanding functionality.
  • Local and remote monitoring through the VRM platform.
  • Configuration via VEConfigure.
  • Compatible with Cerbo GX, Ekrano GX and VictronConnect.
  • VE.Bus communication and system integration.
  • Wide range of models for different applications.

Applications

  • Residential self-consumption systems.
  • Photovoltaic installations with battery storage.
  • Grid-connected hybrid systems.
  • Off-grid installations.
  • Remote homes and cabins.
  • Industrial applications.
  • Telecommunications.
  • Marine applications.
  • Motorhomes and recreational vehicles (RVs).
  • Mobile power systems.
  • Generator-backed installations.
  • Uninterruptible Power Supply (UPS) systems.
  • Energy communities.
  • Microgrids.

Advantages

  • Maximum power continuity during grid outages.
  • Reduces dependence on the utility grid.
  • Optimizes solar self-consumption.
  • Scalable through parallel operation.
  • Compatible with both single-phase and three-phase systems.
  • Intelligent energy management through PowerAssist and PowerControl.
  • Seamless integration with the Victron Energy ecosystem.
  • Remote monitoring from anywhere via the VRM platform.
  • Flexible installation for residential, industrial and mobile applications.
  • High reliability and long service life.
  • Ready for current and future energy storage systems.
  • Broad compatibility with batteries and photovoltaic solutions.

MultiPlus-II 230 V 12/3000/120-32 24/3000/70-32 48/3000/35-32 12/5000/220-50 24/5000/120-50 48/5000/70-50
Electrical Specifications
PowerControl and PowerAssist Yes
Transfer switch 32 A 32 A 32 A 50 A 50 A 50 A
Maximum AC input current 32 A 32 A 32 A 50 A 50 A 50 A
Inverter
Nominal battery voltage 12 V 24 V 48 V 12 V 24 V 48 V
DC input voltage range 9.5 - 17 V 19 - 33 V 38 - 66 V 9.5 - 17 V 19 - 33 V 38 - 66 V
Output voltage 230 VAC ± 2%
Output frequency 50 Hz ± 0.1% (1)
Waveform Pure sine wave
Continuous output power at 25 ºC (3) 3000 VA 3000 VA 3000 VA 5000 VA 5000 VA 5000 VA
Continuous output power at 25 ºC 2400 W 2400 W 2400 W 4000 W 4000 W 4000 W
Continuous output power at 40 ºC 2200 W 2200 W 2200 W 3700 W 3700 W 3700 W
Continuous output power at 65 ºC 1700 W 1700 W 1700 W 3000 W 3000 W 3000 W
Maximum apparent feed-in power
(power fed back to the grid)		 3000 VA 3000 VA 3000 VA 5000 VA 5000 VA 5000 VA
Peak power 5500 W 5500 W 5500 W 9000 W 9000 W 9000 W
Maximum efficiency 93% 94% 95% 95% 96% 96%
Zero-load power consumption 13 W 13 W 11 W 15 W 18 W 18 W
Zero-load power consumption in AES mode 9 W 9 W 7 W 11 W 12 W 12 W
Zero-load power consumption in Search mode 3 W 3 W 2 W 3 W 3 W 2 W
Charger
AC input voltage range 187 - 265 VAC
Input frequency 45 - 65 Hz
Absorption charge voltage 14.4 V 28.8 V 57.6 V 14.4 V 28.8 V 57.6 V
Float charge voltage 13.8 V 27.6 V 55.2 V 13.8 V 27.6 V 55.2 V
Storage mode voltage 13.2 V 26.4 V 52.8 V 13.2 V 26.4 V 52.8 V
Maximum battery charging current (4) 120 A 70 A 35 A 220 A 120 A 70 A
Battery temperature sensor Yes Yes Not included (6) Yes Yes Not included (6)
General
ESS functionality Yes
Integrated anti-islanding function Yes
Transfer time Less than 20 ms
Auxiliary output / second AC output Yes, 32 A Yes, 32 A Yes, 32 A Yes, 50 A Yes, 50 A Yes, 50 A
Auxiliary output operation Active only when power is available at the AC input
Optional external AC current sensor 100 A
Programmable relay (5) Yes
Protections (2) a - g
VE.Bus communication port

For parallel and three-phase operation, remote control and system integration
Parallel operation Yes, up to 6 units of the same model
Three-phase operation Yes, using three units of the same model
General-purpose communication ports Yes, 2 ports
Remote On/Off Yes
Local configuration VEConfigure or VictronConnect via the MK3-USB interface
Bluetooth monitoring Via optional VE.Bus Smart Dongle
Remote monitoring Victron Remote Management (VRM) portal via a GX device
Compatible GX devices Cerbo GX, Ekrano GX and other GX devices
Operating temperature -40 to +65 ºC (fan-assisted cooling)
Humidity Max. 95% (non-condensing)
Maximum operating altitude 2000 m
Enclosure
Material and colour Steel, blue RAL 5012
Protection rating IP22
Battery connection M8 bolts M8 bolts M8 bolts Four M8 bolts
(2 positive and 2 negative)		 Four M8 bolts
(2 positive and 2 negative)		 Four M8 bolts
(2 positive and 2 negative)
230 VAC connection 13 mm2 screw terminals (6 AWG) 13 mm2 screw terminals (6 AWG) 13 mm2 screw terminals (6 AWG) M6 bolts M6 bolts M6 bolts
Weight 19 kg 19 kg 19 kg 33 kg 30 kg 30 kg
Dimensions (H x W x D) 546 x 275 x 147 mm 499 x 268 x 141 mm 499 x 268 x 141 mm 702 x 345 x 152 mm 607 x 330 x 149 mm 565 x 320 x 149 mm
Standards
Safety

EN-IEC 60335-1, EN-IEC 60335-2-29,
EN-IEC 62109-1, EN-IEC 62109-2
Emissions and immunity

EN 55014-1, EN 55014-2
EN-IEC 61000-3-2, EN-IEC 61000-3-3
IEC 61000-6-1, IEC 61000-6-2, IEC 61000-6-3
Uninterruptible power supply system Certificates available on the manufacturer's website
Anti-islanding Certificates available on the manufacturer's website

 

1) The output frequency can be adjusted to 60 Hz.
2) Protection codes:
    a) Output short circuit.
    b) Overload.
    c) Battery voltage too high.
    d) Battery voltage too low.
    e) Temperature too high.
    f) 230 VAC present at the inverter output.
    g) Input voltage ripple too high.
3) Non-linear load, crest factor 3:1.
4) Value measured at an ambient temperature of up to 25 ºC.
5) Programmable relay configurable for general alarm, DC undervoltage or generator start signal. AC rating: 230 V/4 A. DC rating: 4 A up to 35 VDC and 1 A up to 60 VDC.
6) The temperature sensor is not included with the 48 V models. Optional sensor part number: ASS000001000.

MultiPlus-II 230 V 48/8000/110-100 48/10000/140-100 48/15000/200-100 48/4k5/55-32 48/6k5/100-50
Electrical specifications
PowerControl and PowerAssist Yes
Transfer switch 100 A 100 A 100 A 32 A 50 A
Maximum AC input current 100 A 100 A 100 A 32 A 50 A
Inverter
Nominal battery voltage 48 V
DC input voltage range 38 - 66 V 38 - 66 V 38 - 66 V 38 - 60 V 38 - 60 V
Output voltage 230 VAC ± 2 %
Output frequency 50 Hz ± 0.1 % (1)
Waveform Pure sine wave
Continuous output power at 25 ºC (3) 8000 VA 10000 VA 15000 VA 4500 VA 6500 VA
Continuous output power at 25 ºC 6400 W 8000 W 12000 W 4000 W 6000 W
Continuous output power at 40 ºC 5500 W 7000 W 10000 W 3700 W 5700 W
Continuous output power at 65 ºC 4000 W 6000 W 7000 W 3000 W 4600 W
Time-limited power 1
(cold start)		 — — — 4.5 kW / 2 h 6.5 kW / 4 h
Time-limited power 2
(cold start)		 — — — 6 kW / 25 min 8 kW / 1 h
Maximum apparent feed-in power
(power fed back to the grid)		 8000 VA 10000 VA 15000 VA 4000 VA 6000 VA
Peak power 15000 W 18000 W 27000 W 7000 W / 1 min 11000 W / 1 min
Maximum efficiency 95 % 96 % 95 % 95 % 96 %
Zero-load power consumption 29 W 38 W 55 W 20 W 28 W
Zero-load power consumption in AES mode 19 W 27 W 39 W 13 W 18 W
Zero-load power consumption in Search mode 3 W 4 W 6 W 8 W 8 W
Charger
AC input voltage range 187 - 265 VAC
Input frequency 45 - 65 Hz
Absorption charge voltage 57.6 V
Float charge voltage 55.2 V
Storage mode voltage 52.8 V
Maximum battery charging current at 25 ºC 110 A 140 A 200 A 55 A 100 A
Maximum battery charging current at 40 ºC — — — 50 A 95 A
Battery temperature sensor Not included (7) Not included (7) Not included (7) Optional (7) Optional (7)
Compatible battery types Lithium, lead-acid, zinc-bromide and other compatible technologies (4)
General
ESS functionality Yes
Integrated anti-islanding function Yes
Transfer time Less than 20 ms
Auxiliary output / second AC output Yes, 50 A Yes, 50 A Yes, 50 A Yes, 32 A Yes, 50 A
Auxiliary output operation Active only when AC input power is available
Optional external AC current sensor 100 A
Programmable relay (5) Yes
Protections (2) a - g
VE.Bus communication port

For parallel and three-phase operation, remote monitoring and system integration
Parallel operation Yes, with external AC transfer switch (6) Yes, with external AC transfer switch (6) Yes, with external AC transfer switch (6) Yes, up to 6 units of the same model Yes, up to 6 units of the same model
Three-phase operation Yes, using three units of the same model
General-purpose communication ports Yes, 2 ports
Remote On/Off Yes
Local configuration VEConfigure or VictronConnect via MK3-USB interface
Bluetooth monitoring Via optional VE.Bus Smart Dongle
Remote monitoring Victron Remote Management (VRM) portal via a GX device
Compatible GX devices Cerbo GX, Ekrano GX and other GX devices
Operating temperature -40 to +65 ºC, fan assisted cooling
Humidity Max. 95 % (non-condensing)
Maximum operating altitude 2000 m 2000 m 2000 m 4000 m (8) 4000 m (8)
Enclosure
Material and colour Steel, RAL 5012 blue
Overvoltage category OVC3 OVC3 OVC3 — —
Pollution degree 2 2 2 — —
Protection rating IP22 IP22 IP22 IP21 IP21
Battery connection Four M8 bolts
(2 positive and 2 negative)		 Four M8 bolts
(2 positive and 2 negative)		 Four M8 bolts
(2 positive and 2 negative)		 M8 bolts M8 bolts
230 VAC connection M6 bolts M6 bolts M6 bolts 13 mm2 (6 AWG) screw terminals 13 mm2 (6 AWG) screw terminals
Weight 41.2 kg 48.8 kg 80 kg 22 kg 29 kg
Dimensions (H x W x D) 642 x 363 x 206 mm 677 x 363 x 206 mm 810 x 405 x 217 mm 590 x 275 x 149 mm 644 x 320 x 150 mm
Standards
Safety

EN-IEC 60335-1, EN-IEC 60335-2-29,
EN-IEC 62109-1, EN-IEC 62109-2
Emissions and immunity

EN 55014-1, EN 55014-2
EN-IEC 61000-3-2, EN-IEC 61000-3-3
IEC 61000-6-1, IEC 61000-6-2, IEC 61000-6-3
Uninterruptible Power Supply Certificates available on the manufacturer's website Certificates available on the manufacturer's website Certificates available on the manufacturer's website IEC 62040 IEC 62040
Anti-islanding Certificates available on the manufacturer's website Certificates available on the manufacturer's website Certificates available on the manufacturer's website IEC 62116 IEC 62116

 

1) Output frequency can be adjusted to 60 Hz.
2) Protection codes:
    a) Output short circuit.
    b) Overload.
    c) Battery voltage too high.
    d) Battery voltage too low.
    e) Temperature too high.
    f) 230 VAC present at inverter output.
    g) Input voltage ripple too high.
3) Non-linear load, crest factor 3:1. For the 4k5 and 6k5 models, the VA rating corresponds to the commercial model designation, while the continuous output power is specified separately in watts.
4) Other battery technologies may also be used, provided the charger is configured according to the battery manufacturer's specifications.
5) Programmable relay configurable for general alarm, DC undervoltage or generator start/stop signal. AC rating: 230 V / 4 A. DC rating: 4 A up to 35 VDC and 1 A up to 60 VDC.
6) MultiPlus-II 8k, 10k and 15k models can only be connected in parallel when an external AC transfer switch is used.
7) Optional temperature sensor. Order code: ASS000001000.
8) Maximum operating altitude of 4000 m, with power derating of 1% for every 100 m above 2000 m.
— Specification not explicitly stated for that model in the corresponding datasheet.

Ficha producto Multiplus-II

pdf Datasheet-MultiPlus-II-inverter-charger-ES.pdf ( 554.53 KiB )

Ficha producto Multiplus-II 4k5 - 6k5

pdf Datasheet-MultiPlus-II-inverter-charger-4k-4k5-6k5-ES-.pdf ( 402.95 KiB )

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