Victron Energy MultiPlus-II GX Inverter/Charger 230V (Euro 50Hz)

Note: This is a 230V / 50Hz (European standard) model with a single-phase output. It's most often used to replace a like-for-like inverter/charger on a European-built boat. For US-standard 120/240V split-phase output (two 120V legs, neutral, and ground), 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.

The Victron MultiPlus-II GX is a MultiPlus-II inverter/charger with a GX system controller built right in. It combines a true sine wave inverter, an adaptive multi-stage charger, a high-speed AC transfer switch, ESS-grade anti-islanding, and an integrated GX device - display, WiFi, Ethernet, and VE.Direct - in one enclosure, so you don't need a separate Cerbo GX to monitor and control the system.

Available in 230V / 50Hz at 24V or 48V DC, in 3 kVA and 5 kVA sizes. Choose your model from the variant selector above.

Who the MultiPlus-II GX is built for

• European-built boats - a like-for-like 230V / 50Hz replacement inverter/charger, with the bonus of a built-in GX display and WiFi for monitoring.
• Energy Storage Systems (ESS) - the integrated GX, anti-islanding, and external current-sensor support make this a natural fit for grid-parallel solar-plus-battery systems with self-consumption or grid backup.
• Off-grid homes and cabins (230V) - pair with MPPT solar and a 24V or 48V battery bank for a self-consumption or backup system that still accepts a generator.
• Installers building remote-monitored systems - the on-board GX reports the whole system to the free VRM Portal without a separate controller.

Why this is the MultiPlus-II GX

Integrated GX device - no separate Cerbo needed

The on-board GX includes a 2 x 16 character display plus Ethernet, USB, VE.Direct, BMS-Can, and WiFi. It reads battery, inverter, and solar charge controller parameters locally and reports the whole system to the free VRM Portal. The BMS-Can interface connects a compatible CAN-bus managed battery (note: this is not a VE.Can port). In parallel or three-phase systems, only one GX unit is needed.

Single AC input with a no-break 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. The main output rides through any source loss in under 20 milliseconds, fast enough that computers and other electronics keep running. (If you need two AC inputs for both shore power and a generator with automatic source selection, look at the Quattro instead.)

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 and optimizes self-consumption.

Two AC outputs

The main output is no-break for critical loads. The second (auxiliary) output, rated 32 A, is live only when an AC source is present - so non-critical loads like a water heater can't discharge the battery overnight.

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 is 70 A (24/3000), 35 A (48/3000), or 70 A (48/5000).

ESS-ready with built-in anti-islanding

Built-in anti-islanding and grid-code approvals (see Victron's certificates) let the MultiPlus-II GX 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.

Scales with your system

Up to six units run in parallel on a single VE.Bus for higher output, and three units configure for three phase. Only one GX unit is needed across the whole parallel or three-phase system.

Available variants

All variants are sold on this page - choose your model from the variant selector above. Every model has the integrated GX device.

Model	Battery	Cont. output at 25 C	Peak power	House charger	Transfer switch
MultiPlus-II 24/3000/70-32 230V GX	24 VDC	2,400 W (3,000 VA)	5,500 W	70 A	32 A
MultiPlus-II 48/3000/35-32 230V GX	48 VDC	2,400 W (3,000 VA)	5,500 W	35 A	32 A
MultiPlus-II 48/5000/70-50 230V GX	48 VDC	4,000 W (5,000 VA)	9,000 W	70 A	50 A

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: 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)
• Continuous output at 40 C: 2,200 W / 3,700 W
• Continuous output at 65 C: 1,700 W / 3,000 W
• Maximum apparent feed-in power: 3,000 VA (3 kVA) / 5,000 VA (5 kVA)
• Peak power: 5,500 W (3 kVA) / 9,000 W (5 kVA)
• Maximum efficiency: 94% (24/3000), 95% (48/3000), 96% (48/5000)

Charger

• AC input voltage range: 187 - 265 VAC, 45 - 65 Hz
• Adaptive 4-stage charging: bulk, absorption, float, storage
• Lithium-ion compatible
• Absorption voltage: 28.8 V (24V) / 57.6 V (48V)
• Float voltage: 27.6 V / 55.2 V
• Storage voltage: 26.4 V / 52.8 V
• Maximum charge current: 70 A (24/3000), 35 A (48/3000), 70 A (48/5000)
• Battery temperature sensor included

GX, system, and communication

• Integrated GX device with 2 x 16 character display
• Interfaces: BMS-Can, USB, Ethernet, VE.Direct, WiFi
• VE.Bus port for parallel and three phase operation, remote monitoring, and system integration
• Two general-purpose communication ports
• Auxiliary AC output: 32 A (live only when an AC source is present)
• 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

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
• Battery connection: M8 bolts
• AC connection: 6 AWG (13 mm2) screw terminals
• Weight: 44 lb / 20 kg (3 kVA models), 68 lb / 31 kg (48/5000)
• Dimensions (h x w x d): 506 x 275 x 147 mm (3 kVA models); 565 x 323 x 148 mm (48/5000)

Standards and certifications

• Safety: EN-IEC 60335-1, EN-IEC 60335-2-29, EN-IEC 62109-1, EN-IEC 62109-2
• Uninterruptible power supply: IEC 62040-1
• 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
• Anti-islanding: see Victron's certificates

Recommended accessories

• Victron Autotransformer - derive US 120/240V split phase from this 230V unit (both set to 60Hz)
• 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 GX isn't plug-and-play. Battery cable sizing, fusing, AC inlet rating, and bonding all need to match the variant you choose - and if you're deriving US split phase, the Autotransformer has to be sized and configured too. 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

What does the GX in MultiPlus-II GX mean?

It means the GX system controller is built into the inverter/charger - a 2 x 16 display plus Ethernet, USB, VE.Direct, BMS-Can, and WiFi. You get local monitoring and full VRM Portal remote access without buying a separate Cerbo GX or Ekrano GX.

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. This is a common approach when a European-built boat needs to run on US shore power.

How many AC inputs does it have?

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

Is it lithium battery compatible?

Yes. The charger is fully programmable for LiFePO4 and other lithium chemistries, and the BMS-Can interface connects a compatible CAN-bus managed battery.

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 GX 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.