Victron Energy MultiPlus-II Inverter/Charger 230V (Euro 50Hz) - 3kVA to 15kVA

Note: This is a 230V / 50Hz (European standard) model with a single-phase output, most often used as a like-for-like replacement on a European-built boat. Two ways to run it on US power: (1) for US-standard 120/240V split phase, configure the MultiPlus-II for 60Hz and pair it with a Victron Autotransformer also set to 60Hz - the inverter supplies 230V/60Hz and the autotransformer splits it into 120/240V; or (2) if you're buying new for a US system, consider the US MultiPlus-II 120V or the MultiPlus-II 2x120V split-phase models instead.

The Victron MultiPlus-II is a true sine wave inverter, an adaptive multi-stage charger, and a high-speed AC transfer switch in one enclosure - with ESS-grade anti-islanding built in. It combines the original MultiPlus with the MultiGrid: all the inverter/charger functions plus an external current-sensor option, anti-islanding, and a long list of grid-code approvals for energy storage systems.

This 230V / 50Hz listing spans a wide range - 3 kVA to 15 kVA, at 12V, 24V, or 48V DC - so it covers everything from a compact boat system to a large off-grid or ESS install. Choose your model from the variant selector above.

Who the MultiPlus-II is built for

• European-built boats - a like-for-like 230V / 50Hz replacement inverter/charger for an existing system.
• Energy Storage Systems (ESS) - anti-islanding, external current-sensor support, and grid-code approvals make this the linchpin of a grid-parallel solar-plus-battery system.
• Off-grid homes and larger installs - the 8 kVA, 10 kVA, and 15 kVA models handle whole-home off-grid loads from a 48V bank.
• Installers and electricians - VE.Bus communication, VEConfigure, and parallel/three-phase scaling to very large systems.

Why this is the MultiPlus-II

Inverter, charger, and transfer switch in one box

A low-distortion pure sine wave inverter, a smart adaptive charger, and an integrated AC transfer switch. One AC input feeds the unit - it charges from shore or generator when AC is present and inverts from the battery when it isn't. (If you need two AC inputs with automatic source selection, look at the Quattro instead.)

No-break AC output and two AC outputs

The main output rides through any source loss in under 20 milliseconds, fast enough that computers and other electronics keep running. The second (auxiliary) output is live only when an AC source is present - so non-critical loads like a water heater can't discharge the battery overnight.

PowerControl and PowerAssist

Set a maximum shore or generator current and the unit uses only the leftover capacity for charging, so the inlet breaker never trips (PowerControl). When a peak load exceeds the inlet rating, it supplements from the battery and recharges once the peak passes (PowerAssist). An optional external AC current sensor (50 A or 100 A) extends these functions to shared circuits.

ESS-ready with built-in anti-islanding

Built-in anti-islanding and a long list of grid-code approvals (see Victron's certificates) let the MultiPlus-II run a Victron Energy Storage System - self-consumption, peak-shaving, or grid backup - alongside SmartSolar MPPTs or a grid-tie PV inverter and a lithium bank.

Adaptive multi-stage charging - lithium and lead-acid friendly

A four-stage charge profile (bulk, absorption, float, storage) with adaptive-charge software and an included battery temperature sensor, fully programmable for lithium, AGM, gel, and flooded banks. Maximum charge current ranges from 35 A (48/3000) up to 220 A (12/5000), by model.

Scales with your system: parallel and three phase

Up to six units run in parallel on a single VE.Bus for higher output, and three units configure for three phase - and up to six sets of three units for a 75 kW / 90 kVA system. Note: the 8 kVA, 10 kVA, and 15 kVA models can only be paralleled with an external AC transfer switch (see Victron's External Transfer Switch application manual).

Monitor and control from anywhere

Add a Cerbo GX or Ekrano GX and your system is visible in the free VRM Portal from your phone, tablet, or laptop. Configure on-site with VEConfigure (via the MK3-USB interface) or the VictronConnect app over Bluetooth (via the VE.Bus Smart dongle).

Available variants

All variants are sold on this page - choose your model from the variant selector above.

Not sure which fits your bank? Get a custom quote from our Seattle team or book a system consultation and we'll size your inverter, charger, batteries, and cabling together.

Full technical specifications

Inverter

• DC input voltage range: 9.5 - 17 V (12V), 19 - 33 V (24V), 38 - 66 V (48V)
• Output voltage: 230 VAC +/- 2%
• Output frequency: 50 Hz +/- 0.1% (adjustable to 60 Hz)
• Waveform: pure sine
• Continuous output at 25 C: 2,400 W (3 kVA), 4,000 W (5 kVA), 6,400 W (8 kVA), 8,000 W (10 kVA), 12,000 W (15 kVA)
• Peak power: 5,500 W (3 kVA), 9,000 W (5 kVA), 15,000 W (8 kVA), 18,000 W (10 kVA), 27,000 W (15 kVA)
• Maximum efficiency: 93-96% depending on model

Charger

• AC input voltage range: 187 - 265 VAC, 45 - 65 Hz
• Adaptive 4-stage charging: bulk, absorption, float, storage
• Lithium-ion compatible
• Absorption voltage: 14.4 / 28.8 / 57.6 VDC (12V / 24V / 48V banks)
• Float voltage: 13.8 / 27.6 / 55.2 VDC
• Storage voltage: 13.2 / 26.4 / 52.8 VDC
• Maximum charge current: 120 A (12/3000), 70 A (24/3000), 35 A (48/3000), 220 A (12/5000), 120 A (24/5000), 70 A (48/5000), 110 A (48/8000), 140 A (48/10000), 200 A (48/15000)
• Battery temperature sensor included

System and communication

• AC transfer switch: 32 A (3 kVA), 50 A (5 kVA), 100 A (8/10/15 kVA)
• Auxiliary AC output: 32 A (3 kVA and 5 kVA), 50 A (8/10/15 kVA) - live only when an AC source is present
• VE.Bus port for parallel and three phase operation, remote monitoring, and system integration
• Two general-purpose communication ports
• External AC current sensor (optional): 50 A or 100 A
• One programmable relay - general alarm, DC under-voltage, or genset start/stop (AC 230 V / 4 A; DC 4 A up to 35 V, 1 A up to 60 V)
• Remote on/off input
• Compatible with Cerbo GX, Ekrano GX, Digital Multi Control panel, VE.Bus Smart Dongle (Bluetooth), and MK3-USB interface

Protection

• Output short circuit
• Overload
• Battery voltage too high or too low
• Over-temperature
• 230 VAC on inverter output
• Excessive input voltage ripple

Enclosure and environment

• Material: steel, RAL 5012 blue
• Protection category: IP22
• Operating temperature: -40 C to +65 C (fan-assisted cooling)
• Humidity (non-condensing): 95% max
• Maximum altitude: 2,000 m
• Battery connection: M8 bolts (3 kVA); four M8 bolts (2 positive, 2 negative) on 5 kVA and larger
• AC connection: 6 AWG (13 mm2) screw terminals (3 kVA and 5 kVA); M6 bolts (8/10/15 kVA)
• Weight: 42 lb / 19 kg (3 kVA); 66 lb / 30 kg (5 kVA); 93 lb / 42 kg (8 kVA); 108 lb / 49 kg (10 kVA); 176 lb / 80 kg (15 kVA)

Standards and certifications

• Safety: EN-IEC 60335-1, EN-IEC 60335-2-29, EN-IEC 62109-1, EN-IEC 62109-2
• EMC: 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
• UPS and anti-islanding: see Victron's certificates

Recommended accessories

• Victron Autotransformer - derive US 120/240V split phase from this 230V unit (both set to 60Hz)
• Cerbo GX or Ekrano GX - system controller and VRM gateway
• SmartShunt or BMV-712 Smart - battery state-of-charge monitoring
• External AC current sensor - extend PowerControl and PowerAssist, optimize self-consumption
• Compatible lithium battery banks from Victron, Epoch, and MG Energy Systems
• Victron SmartSolar MPPT - pair to build a full ESS system

Installation and sizing help

Wiring a MultiPlus-II isn't plug-and-play. Battery cable sizing, fusing, AC inlet rating, and bonding all need to match the variant you choose - and the larger 8/10/15 kVA models have specific parallel and transfer-switch requirements. Two free resources to start with:

• Victron Wiring Unlimited - the canonical reference for sizing the DC and AC sides of a Victron system.
• Our AWG to Metric Conversion chart.

If you want a second set of eyes on your one-line diagram, our certified technicians do system consultations and full custom quotes. Email support@bluemarine.com or call (800) 628-6306.

Frequently asked questions

Can I use this 230V unit on US 120/240V power?

Not directly - its output is 230V / 50Hz (European standard). To run on US power, configure the MultiPlus-II for 60Hz and pair it with a Victron Autotransformer also configured for 60Hz, which converts the 230V/60Hz output into US-standard 120/240V split phase. If you're buying new for a US system, the US MultiPlus-II 120V or MultiPlus-II 2x120V models are usually the simpler choice.

What's the difference between the MultiPlus and the MultiPlus-II?

The MultiPlus-II adds the MultiGrid's ESS features - built-in anti-islanding, an external current-sensor option, and a long list of grid-tie country approvals - on top of the standard MultiPlus inverter/charger functions. For a new ESS or grid-parallel install, the MultiPlus-II is the current generation.

How many AC inputs does it have?

One. The MultiPlus-II has a single AC input. If you need two AC inputs (shore plus generator) with automatic source selection, choose a Quattro instead.

Can the 8, 10, and 15 kVA models be paralleled?

Yes, but only with an external AC transfer switch - see Victron's MultiPlus-II External Transfer Switch application manual. The 3 kVA and 5 kVA models parallel directly over VE.Bus.

Is it lithium battery compatible?

Yes. The charger supports custom voltage and current profiles for LiFePO4 and other lithium chemistries, and it communicates with Victron's VE.Bus BMS over the communication port.

What warranty does it come with?

A 5-year limited warranty from Victron Energy, upgradable to 10 years for an additional 10% of the purchase price. Blue Marine handles the warranty claim process for you. Email support@bluemarine.com.

Why buy your MultiPlus-II from Blue Marine

• True Blue Victron Energy Distributor - we carry the full Victron line and know the products inside out.
• Certified technicians on the phone - (800) 628-6306 for sizing, troubleshooting, and warranty support.
• Free shipping over $49 from our Seattle warehouse.
• 60-day hassle-free returns.
• Local pickup available in Seattle, WA.
• Custom quotes and full system design - we'll spec the inverter, batteries, MPPTs, cabling, and monitoring as one package.
• Dealer and installer program with trade pricing. Apply here.