Multifunctional, with intelligent power management
The MultiPlus is a powerful true sine wave inverter, a sophisticated battery charger that features adaptive charge
technology, and a high-speed AC transfer switch in a single compact enclosure. Next to these primary functions, the
MultiPlus has several advanced features, as outlined below.
Two AC Outputs
The main output has no-break functionality. The MultiPlus takes over the supply to the connected loads in the event of
a grid failure or when shore-/generator power is disconnected. This happens so fast (less than 20 milliseconds) that
computers and other electronic equipment will continue to operate without disruption.
The second output is live only when AC is available on the input of the MultiPlus. Loads that should not discharge the
battery, like a water heater for example, can be connected to this output (second output available on models rated at
3kVA and more).
Virtually unlimited power thanks to parallel operation
Up to six Multis can operate in parallel to achieve higher power output. Six 24/3000/70 units, for example, provide
15kW / 18kVA output power with 420 Amps of charging capacity.
Three phase capability
In addition to parallel connection, three units can be configured for three-phase output. But that’s not all: with three
strings of six parallel units a 45 kW / 54 kVA three phase inverter and 1260 A charger can be built.
Split phase options
Two units can be stacked to provide 120-0-120 V, and additional units can be paralleled up to a total of 6 units per
phase, to supply up to 30 kW / 36 kVA of split phase power.
Alternatively, a split phase AC source can be obtained by connecting our autotransformer (see data sheet on
www.victronenergy.com) to a ‘European’ inverter programmed to supply 240 V / 60 Hz.
PowerControl – Dealing with limited generator, shore side or grid power
The MultiPlus is a very powerful battery charger. It will therefore draw a lot of current from the generator or shore side
supply (nearly 20 A per 3 kVA MultiPlus at 120 VAC). With the Multi Control Panel a maximum generator or shore
current can be set. The MultiPlus will then take account of other AC loads and use whatever is extra for charging, thus
preventing the generator or shore supply from being overloaded.
PowerAssist – Boosting the capacity of shore or generator power
This feature takes the principle of PowerControl to a further dimension. It allows the MultiPlus to supplement the
capacity of the alternative source. Where peak power is so often required only for a limited period, the MultiPlus will
make sure that insufficient shore or generator power is immediately compensated for by power from the battery. When
the load reduces, the spare power is used to recharge the battery.
Four stage adaptive charger and dual bank battery charging
The main output provides a powerful charge to the battery system by means of advanced ‘adaptive charge’ software.
The software fine-tunes the three stage automatic process to suit the condition of the battery, and adds a fourth stage
for long periods of float charging. The adaptive charge process is described in more detail on the Phoenix Charger
datasheet and on our website, under Technical Information. In addition to this, the MultiPlus will charge a second
battery using an independent trickle charge output intended for a main engine or generator starter battery.
System configuring has never been easier
After installation, the MultiPlus is ready to go.
If settings have to be changed, this can be done in a matter of minutes with a DIP switch setting procedure. Even
parallel and 3-phase operation can be programmed with DIP switches: no computer needed!
Alternatively, VE.Net can be used instead of the DIP switches.
And sophisticated software (VE.Bus Quick Configure and VE.Bus System Configurator) is available to configure several
new, advanced, features

PowerControl / PowerAssist Yes
Three Phase and parallel operation Yes
Transfer switch 16A
INVERTER
Input voltage range 9,5 – 17V 19 – 33V 38– 66V
Output Output voltage: 230VAC ± 2% Frequency: 50Hz ± 0,1% (1)
Cont. output power at 25°C (3) 1200VA
Cont. output power at 25°C 1000W
Cont. output power at 40°C 900W
Cont. output power at 65°C 600W
Peak power 2400W
Maximum efficiency 93 / 94 / 95%
Zero-load power 10 / 9 / 10W
Zero-load power in search mode 3/ 3 / 3W
CHARGER
AC Input Input voltage range: 187-265 VAC Input frequency: 45 – 65 Hz
Charge voltage ‘absorption’ 14,4 / 28,8 / 57,6V
Charge voltage ‘float’ 13,8 / 27,6 / 55,2V
Storage mode 13,2 / 26,4 /52,8V
Charge current house battery (4) 50 / 25 / 13A
Charge current starter battery 1A (12V and 24V models only)
Battery temperature sensor Yes
GENERAL
Programmable relay (5) Yes
Protection (2) a – g
VE.Bus communication port For parallel and three phase operation, remote monitoring and system integration
(RJ45-spliter ASS030065510 needed for 500/800/12ooVA models)
Remote on-off On/off/charger only On/off
DIP switches Yes (6) Yes (3)
Internal DC fuse 200/100/50A
Common Characteristics Operating temp. range: -40 to +65°C (fan assisted cooling)
Humidity (non-condensing): max 95%
ENCLOSURE
Common Characteristics Material & Colour: Steel/ABS (blue RAL 5012) Protection category: IP 21
Battery-connection 35 / 25 / 10 mm²
230V AC-connection G-ST18i connector
Weight 8,2 kg
Dimensions (h x w x d) 406 x 250 x 100 mm
STANDARDS
Safety EN-IEC 60335-1, EN-IEC 60335-2-29, EN 62109-1
Emission / 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
Road vehicles ECE R10-5
1) Can be adjusted to 60Hz and to 240V
2) Protection
a. Output short circuit
b. Overload
c. Battery voltage too high
d. Battery voltage too low
e. Temperature too high
f. 230VAC on inverter output
g. Input voltage ripple too high
3) Non-linear load, crest factor 3:1
4) At 25°C ambient
5) Programmable relay which can be set for:
general alarm, DC under voltage or generator start/stop signal function
AC rating: 230V/4A
DC rating: 4A up to 35VDC, 1A up to 60VDC

Proven reliability
The full bridge plus toroidal transformer topology has proven its reliability over many years.
The inverter is short circuit proof and protected against overheating, whether due to overload or high ambient temperature.
PowerControl – Dealing with limited generator, shore side or grid power
With the Multi Control Panel a maximum generator or shore current can be set. The MultiPlus will then take account of other AC loads and use whatever
is extra for charging, thus preventing the generator or shore supply from being overloaded.
PowerAssist – Boosting the capacity of shore or generator power
Where peak power is so often required only for a limited period, the MultiPlus will make sure that insufficient shore or generator power is immediately
compensated for by power from the battery. When the load reduces, the spare power is used to recharge the battery.
High start-up power
Needed to start high inrush loads such as power converters for LED lamps, halogen lamps or electric tools.
Search Mode
When Search Mode is ‘on’, the power consumption of the inverter in no-load operation is decreased by approx. 70%. In this mode the Multi, when
operating in inverter mode, is switched off in case of no load or very low load, and switches on every two seconds for a short period. If the output current
exceeds a set level, the inverter will continue to operate. If not, the inverter will shut down again.
Programmable relay
By default, the programmable relay is set as
an alarm relay, i.e. the relay will de-energise
in the event of an alarm or a pre-alarm
(inverter almost too hot, ripple on the input
almost too high, battery voltage almost too
low).
Remote on / off / charger on
Three pole connect