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Victron VE.Bus to USB MK3 Interface Cable

Genuine Victron MK3-USB for VE.Bus Configuration & Firmware Updates


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Victron MK3-USB interface cable with USB-A connector and VE.Bus interface box

Victron VE.Bus to USB MK3 Interface Cable

DESCRIPTION

Victron VE.Bus to USB MK3 Interface Cable: Professional Configuration Tool for Victron Energy Systems

Reliable USB to VE.Bus Connectivity for MultiPlus, Quattro, and EasySolar

The Victron VE.Bus to USB MK3 Interface Cable (ASS030140000) provides a direct, stable link between your computer’s USB port and the VE.Bus communication port on compatible Victron devices. This interface enables precise configuration, firmware updates, and system monitoring using Victron’s official software suite, including VictronConnect and VEConfigure. It is an essential accessory for installers, system integrators, and advanced users managing Victron MultiPlus, Quattro, EasySolar, and other VE.Bus-enabled products.

Unlike generic USB-to-serial adapters, the MK3-USB is purpose-built for the VE.Bus protocol, ensuring reliable data transfer and full compatibility with Victron’s proprietary communication. This reduces the risk of configuration errors, communication dropouts, and potential damage to sensitive electronics. The integrated interface box features a moulded strain relief and a robust RJ45 socket, designed to withstand frequent use in workshops, marine environments, and off-grid installations.

Key Features

  • Direct USB-A connection to Windows, macOS, and Android devices (OTG cable required for Android)
  • RJ45 VE.Bus port for secure, industry-standard LAN cable connection to Victron equipment
  • Compatible with VictronConnect for streamlined configuration and firmware updates
  • Durable moulded strain relief protects internal wiring from bending and fatigue
  • Compact interface box with clear labelling for easy identification in complex setups

Broad Compatibility Across the Victron Ecosystem

This interface cable works with a wide range of Victron products that feature a VE.Bus communication port, including:

  • MultiPlus and MultiPlus-II inverter/chargers
  • Quattro inverter/chargers
  • EasySolar and EasyPlus all-in-one systems
  • ECOmulti units
  • VE.Bus BMS V2
  • Select Inverter models with VE.Bus

For connection, a standard straight RJ45 UTP cable (patch lead) is required between the MK3-USB and the Victron device. Using an industrially manufactured cable is recommended to maintain signal integrity and avoid intermittent faults.

Why Choose the Genuine Victron MK3-USB?

Third-party or generic USB-to-RJ45 adapters often lack the necessary protocol handling for VE.Bus, leading to failed firmware updates, incomplete configuration, or unrecognised devices. The genuine Victron MK3-USB eliminates these risks by providing a fully integrated, tested solution. It supports all VE.Bus commands and ensures that critical settings—such as charger voltages, inverter thresholds, and grid interaction parameters—are applied accurately.

For mobile installers and field technicians, the compact design and USB bus-powered operation mean no external power supply is needed. Simply plug into a laptop, connect to the VE.Bus network, and launch VictronConnect or VEConfigure to begin diagnostics or programming.

Software and Platform Support

The MK3-USB is compatible with VictronConnect on Windows, macOS, and Android (iOS not supported). On Android devices, an OTG cable is required to adapt the USB-A plug to micro-USB or USB-C. For advanced configuration, VEConfigure tools are available for Windows, offering deeper access to system parameters. Always download the latest software from the official Victron Energy website to ensure full functionality and security.

Take Control of Your Victron System

Equip your toolkit with the Victron VE.Bus to USB MK3 Interface Cable and unlock the full potential of your Victron energy system. Whether commissioning a new off-grid installation, updating firmware on a marine inverter, or fine-tuning a backup power setup, this interface provides the reliable connection you need. Add it to your order today and experience seamless configuration backed by Victron’s engineering standards.

SPECIFICATIONS

Specifications

ModelInterface MK3-USB
Victron Part NumberASS030140000
Connection PurposeAllows the following products to connect to a computer for configuration and firmware updates.
Compatible ProductsMulti, MultiGrid, MultiPlus, MultiPlus-II, Quattro, VE.Bus BMS V2, Inverter/Charger settings in ECOmulti, EasySolar, EasyPlus, and Inverters with a VE.Bus communication port.
Required CableStraight RJ45 UTP cable. Also known as Ethernet patch or LAN cables. Use an industrially manufactured cable.
VictronConnect Platform SupportAndroid, Windows, and macOS X (but not iOS).
Android Additional RequirementAdditional OTG cable to convert the USB cable from the MK3-USB to the data port on your device (typically micro-USB or USB-C).
Voltage Required For CommunicationMulti/Quattro: Either AC or DC; Multi Compact: DC; Inverters: DC.

SKU: Vic-ASS030140000
Barcode: 8719076019435
Model #: Vic-ASS030140000
MPN: Vic-ASS030140000

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

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