Victron 48V 4500W MultiPlus-II 48/4k5/55-32 Inverter/Charger
Victron 48V 4500W MultiPlus-II 48/4k5/55-32 Inverter/Charger
Key features: High-performance 4500W peak inverter power, Integrated 55A adaptive battery charger, PowerAssist prevents overloading a limited AC source, Durable IP21 rated steel enclosure, Seamless AC transfer switch for UPS functionality.

Highlights:AC Terminals: Secure screw terminals for 13mm2 AC input and output cabling,DC Battery Terminals: Heavy-duty M8 bolts for high-current battery connections,VE.Bus Ports: RJ45 communication ports for parallel and three-phase operation,Programmable Relay: Green terminal block for auxiliary output and relay control.
Technical dimensional drawing detailing the 590mm height, 275mm width, and 149mm depth, including mounting hole spacings for secure installation planning. 
DESCRIPTION
Victron MultiPlus-II 48/4k5/55-32 230V Inverter/Charger
More power per kg and per dm³, and better high temperature performance compared to other MultiPlus-II models.
Professional-Grade Inverter/Charger with ESS Functionality
The Victron MultiPlus-II 48/4k5/55-32 230V is a multifunctional inverter/charger engineered for professional marine, mobile, and off-grid applications. It combines a high-efficiency 230V inverter with a powerful battery charger, featuring Energy Storage System (ESS) functionality that allows seamless integration with solar, generator, and grid-connected systems. With peak power capabilities of 7kW and time-limited output of 4.5kW for 2 hours, it ensures continuous power supply even during high-demand conditions.
PowerControl and PowerAssist – Intelligent Load Management
PowerControl allows the MultiPlus-II to limit AC input current to a safe value, preventing grid or generator overloads. PowerAssist extends this functionality, compensating for insufficient generator or shore power with energy from the battery during peak load periods. Once demand decreases, the surplus energy is used to recharge the battery, maximising energy efficiency and system reliability.
Uninterrupted Power & Dual AC Outputs
The main AC output provides seamless transfer during grid or generator failure in less than 20 milliseconds, maintaining continuous operation of sensitive electronics. A second AC output is live only when input power is available, ideal for non-critical loads such as water heaters. Both outputs are fully integrated into the PowerControl and PowerAssist system for intelligent energy distribution.
Flexible System Configuration
The MultiPlus-II 48/4k5/55-32 supports parallel operation for increased output and three-phase setups for larger installations. Up to six units can be configured in parallel, or three units for three-phase operation, and up to six sets of three can operate in parallel. On-site configuration is simple with VEConfigure software, while monitoring can be performed via Cerbo GX, Ekrano GX, Digital Multi Control Panel, or VictronConnect for real-time insight.
High Efficiency & Robust Design
With a maximum efficiency of 95%, the MultiPlus-II minimizes energy loss while delivering reliable power. Its rugged IP21-rated steel enclosure and fan-assisted cooling ensure safe operation in temperatures ranging from -40°C to +65°C. The unit supports lithium, lead-acid, and zinc-bromine batteries, making it highly versatile for various energy storage solutions.
Applications
- Marine and yachting systems for uninterrupted AC power
- Mobile and vehicle energy solutions
- Off-grid homes and commercial installations
- Solar PV integration and energy storage systems
- Professional backup power for critical loads
Upgrade your system with the Victron MultiPlus-II 48/4k5/55-32 230V for intelligent energy management, peak load support, and uninterrupted AC power for professional and off-grid applications
SPECIFICATIONS
Specifications
| MultiPlus-II 230V: 48/4k5/55-32 | |
|---|---|
| PowerControl & PowerAssist | Yes |
| Transfer switch | 32 A |
| Maximum AC input current | 32 A |
| INVERTER | |
| DC Input voltage range | 38-60 V |
| Output | Output voltage: 230 VAC ± 2 % Frequency: 50 Hz ± 0.1 %(1) |
| Cont. output power at 25 °C | 4 kW |
| Cont. output power at 40 °C | 3.7 kW |
| Cont. output power at 65 °C | 3 kW |
| Time-limited power 1 (cold start) | 4.5 kW/2h |
| Time-limited power 2 (cold start) | 6 kW/25min |
| Max apparent feed-in power | 4 kW |
| Peak power | 7 kW/1min |
| Maximum efficiency | 95 % |
| Zero load power | 20 W |
| Zero load power in AES mode | 13 W |
| Zero load power in Search mode | 8 W |
| CHARGER | |
| AC Input | Input voltage range: 187–265 VAC Input frequency: 45-65 Hz |
| Charge voltage 'absorption' | 57.6 V |
| Charge voltage 'float' | 55.2 V |
| Storage mode | 52.8 V |
| Max. battery charge current at 25 °C | 55 A |
| Max. battery charge current at 40 °C | 50 A |
| Battery temperature sensor | Yes |
| Compatible battery chemistries | Lithium, Lead-acid, Zinc-Bromine and more(3) |
| GENERAL | |
| Auxiliary output | Yes (32 A) |
| External AC current sensor (optional) | 50 A or 100 A |
| Programmable relay(4) | Yes |
| Protection(2) | a – g |
| VE.Bus communication port | For parallel and three phase operation, remote monitoring and system integration |
| General purpose com. port | Yes, 2x |
| Remote on-off | Yes |
| Operating temperature range | -40 to +65 °C (-40 – 150 °F) (fan assisted cooling) |
| Humidity (non-condensing) | max 95 % |
| Maximum altitude | 4000m with 1%/100m power derating above 2000m |
| ENCLOSURE | |
| Material & Colour | Steel, blue RAL 5012 |
| Protection category | IP21 |
| Battery-connection | M8 bolts |
| 230 VAC-connection | Screw terminals 13 mm² (6 AWG) |
| Weight kg | 22 |
| Dimensions (hxwxd) mm | 590 x 275 x 149 |
| Safety | EN-IEC 60335-1, EN-IEC 60335-2-29, EN-IEC 62109-1, EN-IEC 62109-2 |
| 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 |
| Uninterruptible power supply | IEC 62040 |
| Anti-islanding | IEC 62116 |
|
1) Can be adjusted to 60 Hz 2) Protection key: a) output short circuit b) overload c) battery voltage too high d) battery voltage too low e) temperature too high f) 230 VAC on inverter output g) input voltage ripple too high 3) Other chemistries are possible as well, providing the charger is configured according to the battery manufacturer's specification. 4) Programmable relay which can be set for general alarm, DC under voltage or genset start/stop function. AC rating: 230 V / 4 A, DC rating: 4 A up to 35VDC and 1 A up to 60 VDC. |
|
| SKU: | VIC-PMP482405012 |
| Barcode: | 8719076065975 |
| Model #: | PMP482405012 |
| MPN: | PMP482405012 |
WARRANTY
Victron Energy Limited Warranty Policy
Direct Customers
Victron Energy provides the following warranty to any direct customer (OEM, distributor or dealer) in relation to any products that Victron Energy has directly sold to the direct customer. This warranty is not an end-user warranty between Victron Energy and an end-user, and end-users shall not have any rights or remedies under this limited warranty towards Victron Energy directly. The direct customer shall, in turn, ensure that the end-user is provided with a warranty identical to this warranty, subject to applicable local mandatory law.
End-Users
Victron Energy may also provide a warranty directly to end-users, in which case the below warranty conditions equally apply to such warranty. In that case, end-users shall claim their warranty at their place of purchase or through the original direct customer of Victron, which can be found through the support section on Victron’s website https://www.victronenergy.com/support. Hence, the direct customer shall on behalf of Victron Energy deal with any warranty claims made under any warranty that Victron Energy may provide directly to end-users. This support section on Victron’s website https://www.victronenergy.com/support will provide further guidance on the procedure for end-users to make a claim under this limited warranty.
If the end-user is a consumer – a natural person who is acting for purposes which are outside that person's trade, business, craft or profession – the following applies. The rights and remedies granted to the consumer under this limited warranty are without prejudice to the consumer’s statutory rights. Furthermore, the consumer is entitled by law to remedies from the seller free of charge in the event of a lack of conformity of the goods (such as repair, replacement, price reduction or rescission), which remedies are not affected by this limited warranty.
Warranty
Victron Energy warrants its products to be free from defects in workmanship and materials for a period of 5 years from the date of purchase by the original end-user, with a maximum of 66 months from the Victron Energy invoice date. Exceptions on this are: lead-acid batteries: 2 years from date of purchase by the original end-user, with a maximum of 30 months from the Victron Energy invoice date, Lithium batteries: 3 years from date of purchase by the original end-user, with a maximum of 42 months from the Victron Energy invoice date. In addition to this, proof of correct battery usage is required when making a battery warranty claim.
For a 10% surcharge on the current net price for products that came with a 5-year warranty, an additional 5 years of warranty can be purchased by Victron’s direct customers, bringing the total warranty to 10 years. Warranty extensions need to be applied for ultimately one year before the expiration of the original term. Victron may ask proof that the product was still functional at the time of purchase of the extended warranty.
During the warranty period, Victron Energy will, at its discretion, repair, replace or (partly) credit the defective product free of charge. The warranty does not include performing or reimbursing de‐installation, transportation, and re‐installation.
This warranty will be considered void if the unit has suffered any physical damage or alteration, either internally or externally, and does not cover damages arising from improper use like:
- Reversed battery polarity.
- Inadequate connection.
- Mechanical shock or deformation.
- Contact with liquid or oxidation by condensation.
- Use in an inappropriate environment (dust, corrosive vapour, humidity, high temperature, biological infestation, etc.).
- Breakage or damage due to lightning.
- Connection terminals and screws destroyed or other damages, like overheating, due to insufficient tightening.
- For any electronic breakage except due to lightning (reverse polarity, over‐voltage due to external cause), the state of the internal control diode and/or the input/output X and Y capacitors determine the warranty.
This warranty will not apply where the product has been misused, neglected, improperly installed, or repaired by anyone other than Victron Energy or one of its authorized Repair Centres. In order to qualify for the warranty, the product must not be disassembled or modified.
This warranty and our warranty obligations thereunder (repair, replacement or credit) are the direct customer’s and, if applicable, the end-user’s sole rights and remedies and our sole obligations with respect to any defective and/or non-conforming product or breach of warranty and is subject to and without prejudice to the limitations of liability in this warranty.
Victron Energy shall not be liable for damages, whether direct, incidental, special, or consequential, even caused by negligence or fault.
As a product requires service, it must be brought back to the place of purchase. In case no contact can be made with the merchant, or if he is either unable or not allowed to provide service, direct contact should be made with Victron Energy through the support section on Victron’s website.
In case Victron Energy replaces a product, it will own the replaced product. Victron Energy owns all parts removed from repaired products. Victron Energy uses new or reconditioned parts made by various manufacturers when performing warranty repairs or building replacement products.
If Victron Energy repairs or replaces a part of a product, its warranty term is not extended: the warranty will apply for the remaining term of the original warranty term. For example, if Victron Energy replaces a product with a 5-year warranty after 3 years, the warranty of this product will apply for another 2 years, with a minimum of 6 months.
All remedies and the measure for damages are limited to the above. Victron Energy shall in no event be liable for consequential, incidental, contingent or special damages, even if having been advised of the probability of such damages.
The foregoing limited warranty provided by Victron Energy is in lieu of any other warranties, express or implied arising by law, course of dealing, course of performance, usage of trade or otherwise, of any kind whatsoever including, without limitation, warranties of merchantability or fitness for a particular purpose, with respect to any product. The above is without prejudice to the arrangement for consumers detailed above.
Life Support Policy
As a general policy, Victron Energy does not recommend the use of any of its products in life support applications where failure or malfunction of Victron Energy's product can be reasonably expected to cause the failure of the life support device or to significantly affect its safety or effectiveness. Victron Energy does not recommend the use of any of its products in direct patient care. Victron Energy will not knowingly sell its products for use in such applications unless it receives in writing assurances satisfactory to Victron Energy that the risks of injury or damage have been minimized, the customer assumes all such risks, and the liability of Victron Energy is adequately protected under the circumstances.
Warranty on repairs for products outside their warranty period
The warranty period on products that are outside their warranty period and have been repaired by Victron Energy or one of the Victron Energy Repair centres is six (6) months from delivery. The same applies to spare parts and circuit boards that have been supplied or repaired by Victron Energy.
Transport
It is the responsibility of the sender to sufficiently package these products. The transport must be organized in a way to avoid any damage, especially when a single unit or heavy unit is sent.
Severability
If a part of the terms and conditions of this warranty is held invalid, void or unenforceable due to any particular national or international legislation, it shall not affect other parts of the terms and conditions of this warranty.
Applicable law
This warranty is exclusively governed by the laws of the Netherlands, to the exclusion of the UN Convention on Contracts for the International Sale of Goods.
Contact details
Victron Energy B.V. | De Paal 35, 1351 JG Almere, The Netherlands | https://www.victronenergy.com/support

















































