MultiPlus-II 48/5000/70-50
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MultiPlus-II 48/4K5/55-32
A MultiPlus, plus ESS (Energy Storage System) function
The MultiPlus-II is a multifunctional inverter/charger with all the functions of the MultiPlus and an additional function, namely that of an external current sensor. This extends the PowerControl and PowerAssist functions to 50 A and 100 A respectively. The MultiPlus-Il is ideally suited for professional seafaring, yachts, vehicles and land-based, off-grid applications. It also has an integrated function to protect against islanding. Several different system configurations are possible. Further information can be found in the ESS Design & Configuration manual.
PowerControl and PowerAssist - increasing grid or generator power
A maximum grid or generator current can be set. The MultiPlus-Il then takes other AC loads into account and only uses the current that is still "left over" to charge the battery. This prevents the generator or mains connection from being overloaded (PowerControl function).
The PowerAssist function adds a new dimension to the PowerControl principle. Load peaks often only occur for a limited period of time. In such cases, the MultiPlus-Il immediately compensates for insufficient generator, shore power or mains power with energy from the battery. If the load is reduced, the "surplus" energy can be used to charge the batteries.
Solar power: alternating current even in the event of a grid failure
The MultiPlus-Il can be used with both non-grid-connected and grid-connected PV systems as well as other alternative energy systems. It can be used with both solar charge controllers and grid-connected inverters.
Two AC outputs
The main output ensures uninterrupted operation. In the event of a mains failure or an interruption in the shore/generator current, the MultiPlus-Il takes over the supply to the connected loads. Switching takes place so quickly (in less than 20 milliseconds) that uninterrupted operation of computers and other electronic devices is guaranteed.
The second output only supplies power if alternating current is available at the input of the MultiPlus-Il. Loads that must not discharge the battery, such as a water heater, can be connected to this output. The loads connected to the second output are taken into account by the PowerControl and PowerAssist function.
Virtually unlimited power thanks to parallel and three-phase operation
Up to six multis can be connected in parallel if there is a high power requirement. In addition to the parallel connection, three units of the same model can also be configured for a three-phase output. But that's not all: up to 6 sets of three devices can be connected in parallel
On-site system configuration, monitoring and control
Settings can be changed in minutes using the VEConfigure software (requires a computer or laptop and an MK3 USB interface). Several monitoring and control options are available: Ekrano GX, Cerbo GX, Venus GX, laptop, computer, Bluetooth (with optional VE.Bus Smart Dongle), battery monitor, Digital Multi Control.
Remote configuration and monitoring
Install a Cerbo GX or other GX products to connect to the internet. The operating data can be stored and viewed free of charge on our VRM (Victron Remote Management) website. If systems are connected to the Internet, they can be accessed remotely and settings can be changed.
Victron MultiPlus-II 48/4k5/55-32: The intelligent power upgrade for your system
Are you planning an energy system for your home, your large motorhome or your self-sufficient workshop? Then you know the dilemma when it comes to choosing a core unit: the tried-and-tested Victron MultiPlus-II 3000 is often too small for modern everyday use. The jump to the 5000 is not only more expensive, it also often requires a more powerful infrastructure that you don't even need. You are looking for a solution that not only works, but fits perfectly - without compromise and without unnecessary costs.
This is where the brand new Victron MultiPlus-II 48/4k5/55-32 comes in. It is not just another model, but the logical answer to the high demand for a powerful mid-range device. With 3.7 kW continuous power and a robust 32A transfer switch, it is the ideal upgrade for standard households.
At Verkauf-Bochum.de you get more than just a data sheet. We'll show you why this appliance could be the smartest choice for you and what you need to look out for.
The most important facts in brief: The MultiPlus-II 48/4k5/55-32 at a glance
- The golden mean: As a new model, the MultiPlus-II 48/4k5/55-32 perfectly closes the gap between the 3000 and the 5000 - for a perfectly tailored system design.
- Noticeably more power: With 3.7 kW continuous output and 7 kW peak output, it offers the necessary reserves for modern everyday use and demanding off-grid systems.
- Robust & flexible: The perfect choice for ESS home storage units on standard connections (32A) and the robust power center for self-sufficient projects.
- New generation: Benefit from the revised hardware, which offers more power with less heat generation and lower noise levels.
- More compact & lighter: Thanks to modern hardware, it is not only smaller and lighter than older models, which makes installation easier and saves valuable space.
- More power in the heat: Less power loss at high temperatures (temperature derating) means more reliable power in practice - whether in a warm technical room in summer or in off-grid installations.
The logical step forward: Why the MultiPlus-II 48/4k5/55-32 is impressive
Until now, many of our customers have had to make a decision: Is the power of the 3000 (2.4 kW) really enough when the coffee machine is running and the washing machine is heating at the same time? Or do I invest in the 5000 and therefore also in more powerful 50A wiring that I might not even need?
The new MultiPlus-II 48/4k5/55-32 solves this problem elegantly. It is not just a gap filler, but as part of the latest generation it is superior in many respects:
- Sovereign continuous output: at 4.0 kW (at 25°C) and 3.7 kW (at 40 °C), it has over 50% more power than the 3000. This is the buffer that makes the difference between self-sufficiency and mains supply in everyday life.
- Strong starting reserves: The peak output of 7 kW also reliably starts tools, pumps or a small air conditioning system.
- Efficient charging: The 55 A charger quickly refills your storage unit with almost 2.9 kW when mains or generator power is present.
- Perfect for standard infrastructure: The precise 32A transfer switch fits exactly with standard domestic fuses and CEE shore power connections. No expensive conversion necessary.
- More efficient & cooler: Thanks to optimized hardware, the new generation works more efficiently. This means less waste heat - a huge advantage in motorhomes or when installed in the house.
- Full Victron intelligence: Of course, all proven functions such as uninterruptible power supply (UPS function) and PowerAssist are on board.
Technical deep dive: A direct comparison of the new center
Die Zahlen sprechen für sich. Hier siehst du, wie der MultiPlus-II 48/4k5/55-32 die Lücke füllt und warum er für viele die bessere Wahl ist:
| Merkmal | MultiPlus-II 48/3000 | MultiPlus-II 48/4k5/55-32 (NEU) | MultiPlus-II 48/5000 |
|---|---|---|---|
| Dauerleistung (40°C) | 2200W | 3.700 W | 3700 W |
| Dauerleistung (25°C) | 2400 W | 4.200 W | 4000 W |
| Spitzenleistung | 5.500 W | 7.000 W | 9.000 W |
| Max. Ladestrom | 35 A | 55 A | 70 A |
| Transferschalter | 32 A | 32 A | 50 A |
| Ideal für... | Basis-Systeme, kleine Camper | Anspruchsvolle Standard-Systeme, ambitionierte Off-Grid-Systeme | Systeme mit hohem Dauerbedarf |
| Unser Fazit | Der solide Einstieg | Das intelligente Upgrade | Die nächste Leistungsklasse |
Certification in plain language: what other stores don't tell you
This point is crucial for your safety and the legality of your system. An inverter that is connected to the public grid in Germany (i.e. for an ESS) must be certified in accordance with VDE-AR-N 4105.
Status of the MultiPlus-II 48/4k5/55-32:
Just like its big brother, this model is brand new. The official data sheet therefore states: "Certification pending" for the "Anti-islanding" function, which is crucial for Germany.
What this means for you:
We at Verkauf-Bochum.de are in constant contact with Victron Energy. Before you buy this device for a grid-connected system, contact us! We will provide you with the current and binding certification status. We will not sell you a system that your electrician is not allowed to operate legally. This honest advice is our promise.
- For stand-alone systems (off-grid) & mobile applications: No VDE certification is required here. You can use the device without hesitation.
- For grid-connected systems (ESS): Use is only possible after certification has been granted.
Your MultiPlus-II is smart, but not clairvoyant: Why the system is crucial
Especially in camper forums, off-grid groups and on YouTube, we see the most adventurous constructions: A high-end inverter such as the MultiPlus-II 48/4k5/55-32 is combined with batteries from dubious online stores or self-soldered "powerwalls" because a video showed it that way.
⚠️ F rom our daily practice we can tell you: This is not only technically wrong, it is grossly negligent and dangerous! ⚠️
An energy system is an organism. Imagine the MultiPlus-II is the motor and the battery is the gearbox. If the two do not communicate perfectly with each other, the entire drivetrain will blow up in your face. The inverter must communicate with an intelligent battery management system (BMS) via the CAN bus in order to safely control charging and discharging currents. Without this communication, the inverter works blindly - an enormous risk for the expensive lithium cells and for your safety.
A safe and efficient system always consists of these three perfectly coordinated components:
- The brain: the Victron Cerbo GX or Ekrano GX for central control and monitoring.
- The heart: A compatible, certified lithium storage system with intelligent BMS.
- The lifelines: Correctly dimensioned cables, fuses and connections.
Our job at Verkauf-Bochum.de is to prevent you from making such expensive mistakes. We work with you to plan an overall system that not only delivers maximum performance, but is one thing above all: uncompromisingly safe.
Scalable and future-proof: parallel and 3-phase operation
A single MultiPlus-II 48/4k5/55-32 is just the beginning. For a fully-fledged home supply with three-phase current, you can connect three identical appliances together to form a 3-phase system with a full 11.1 kW continuous output.
Expert tip: The largest models in the MultiPlus-II series (from 8kVA) can no longer be connected in parallel to increase the power on a single phase. The MultiPlus-II 48/4k5/55-32 still offers you full flexibility here and is ideal for powerful, scalable systems.
Victron MultiPlus-II 48/4k5/55-32: No more "It fits" - time for "It fits perfectly"
In the end, it's not about buying just any inverter, but the right one. The Victron MultiPlus-II 48/4k5/55-32 is not a compromise. It is the answer for those who want to plan their system intelligently and cost-effectively, rather than just buying the next size up. It is the basis for a system that will reliably do exactly what it is supposed to do for years to come.
The first step towards the perfect solution is honest advice. This is exactly where we come in. We at Verkauf-Bochum.de are your partner for the planning and implementation of your complete energy system.
Frequently asked questions (FAQ) about the MultiPlus-II 48/4k5/55-32
Can I install the MultiPlus-II 48/4k5/55-32 myself?
Our clear recommendation: The entire installation should be carried out by a professional.
The 230V mains connection is reserved by law for qualified electricians - there is no discussion here. And the 48V battery side is also not for amateurs due to the extreme risk of short circuits (fire risk!).
Is the MultiPlus-II 48/4k5/55-32 three-phase?
A single appliance is single-phase. However, you can combine three devices to create a powerful 3-phase system with over 11 kW continuous power.
Which batteries does Verkauf-Bochum.de recommend for this device?
There is a clear recommendation for the MultiPlus-II 48/4k5/55-32 that goes beyond mere compatibility. We prefer to build our systems with the LFP storage systems from our partner Voltsmile. The reason is simple: not only the technical integration and safety are right here, but also the direct line to the manufacturer - an invaluable advantage for long-term operation. Of course, the tried-and-tested systems from Pylontech and BYD are also an excellent and fully compatible alternative. We will clarify which solution makes the most technical and economic sense for your project in an honest system consultation.
How loud is the fan and where is the best place to install the device?
Yes, it is noticeably quieter as part of the new generation. Under normal load, it is practically inaudible. The fan only starts up under heavy load and then sounds like a powerful PC fan.
The rule of thumb for the installation location is therefore: a well-ventilated place away from direct living rooms and bedrooms - whether in the basement, garage or a technical compartment in an off-grid project.