Victron MK3-USB Interface (VE.Bus to USB) - ASS030140000

$46.15

$46.15 $75.65

Victron MK3-USB Interface (VE.Bus to USB) - ASS030140000

$46.15

$46.15 $75.65

Genuine Victron VE.Bus programming interface

Victron MK3-USB Interface (VE.Bus to USB) | Part # ASS030140000

Name: Victron MK3-USB Interface (VE.Bus to USB) - ASS030140000
Brand: Victron Energy
SKU: ifp1789523133523
Price: 46.15 USD
Availability: InStock

The essential Victron programming tool for configuration, firmware updates, commissioning, and diagnostics.

The Victron MK3-USB Interface creates the direct VE.Bus-to-USB connection needed to configure supported MultiPlus, MultiPlus-II, Quattro, MultiGrid, EasySolar, EasyPlus, ECOmulti, VE.Bus BMS V2, and VE.Bus inverter products. Use this genuine MK3 adapter to set lithium charge profiles, update firmware, diagnose systems, and unlock advanced VE.Bus settings from a compatible computer or USB-OTG Android device.

MK3-USB

Interface

VE.Bus

Device side

USB-A

Computer side

RJ45

Cable port

Firmware

Update support

5 years

Victron warranty

The Essential Tool for Programming Victron Inverters

Directly connect a supported VE.Bus inverter or inverter/charger to your computer.

Factory settings rarely match every battery, shore-power source, generator, grid code, or installation. The Victron MK3-USB interface gives installers and advanced DIY builders the wired access required to commission the system correctly rather than relying on generic defaults.

It translates Victron’s VE.Bus communication into USB so compatible software can read settings, change configuration, update firmware, and diagnose the connected product. A separate straight-through RJ45 UTP cable is required between the interface and the VE.Bus device.

Configure MultiPlus, Quattro & VE.Bus Inverters

Victron lists compatibility with Multi, MultiGrid, MultiPlus, MultiPlus-II, Quattro, VE.Bus BMS V2, ECOmulti inverter/charger settings, EasySolar, EasyPlus, and inverters equipped with a VE.Bus communication port. Older hardware or firmware can have limited VictronConnect functionality, so verify the connected product before commissioning.

VictronConnect & VEConfigure Integration

Use VictronConnect for supported VE.Bus products and firmware on Windows, macOS, Android, or Linux AppImage. For advanced and legacy workflows, Victron’s Windows VE.Bus package includes VEConfigure 3, VE.Bus Quick Configure, VE.Bus System Configurator, and VEFlash.

Unlock Advanced System Settings & Diagnostics

Commission lithium systems, update firmware, and troubleshoot with a direct wired connection.

Direct VE.Bus programmingConnect supported Victron inverter/chargers to a computer for commissioning, settings changes, diagnostics, and firmware updates.

MultiPlus and Quattro setupConfigure compatible MultiPlus, MultiPlus-II, Quattro, MultiGrid, EasySolar, EasyPlus, and VE.Bus inverter products.

Lithium charge-profile configurationProgram the inverter/charger to the exact voltage and current limits specified by the Epoch battery and system design.

VictronConnect supportUse VictronConnect on supported platforms and compatible VE.Bus firmware for a modern configuration workflow.

Professional VEConfigure toolsAccess VEConfigure 3, VE.Bus Quick Configure, VE.Bus System Configurator, and VEFlash on Windows.

Firmware update capabilityKeep supported VE.Bus products current and apply approved firmware using Victron tools.

Local diagnosticsConnect directly during commissioning or troubleshooting without relying on Bluetooth or internet access.

Compact service toolEasy to keep in an installer kit for RV, marine, solar, backup, and off-grid system service.

Set Custom Epoch LiFePO4 Charge Profiles

The MK3-USB lets you configure a compatible Victron inverter/charger to match the exact charging limits in the Epoch battery manual, including absorption voltage, float behavior, charge current, low-voltage shutdown, restart thresholds, and AC input limits.

The interface does not connect to the battery itself and does not replace BMS communication. Always use the exact battery manual, system documentation, and applicable electrical standards when programming charge settings.

Common applications

Victron inverter setup, lithium commissioning, firmware updates, and service diagnostics.

✓ Configure a Victron MultiPlus or MultiPlus-II for an Epoch LiFePO4 battery bank.
✓ Set charging voltages, charge current, low-battery thresholds, and AC input limits.
✓ Commission Quattro, MultiGrid, EasySolar, EasyPlus, ECOmulti, or supported VE.Bus inverter systems.
✓ Update supported VE.Bus product firmware through VictronConnect or Victron VE.Bus software tools.
✓ Set up approved parallel, split-phase, or three-phase VE.Bus systems using the appropriate professional workflow.
✓ Diagnose inverter/charger communication, settings, and firmware issues during onsite service.
✓ Load, save, share, or restore configuration files for repeatable professional installations.
✓ Connect an Android device through a compatible USB-OTG adapter for supported VictronConnect workflows.

Fast, plug-and-play connection

Computer → MK3-USB → straight RJ45 UTP cable → VE.Bus device.

Make the VE.Bus product safe and power it according to the product manual.
Connect a straight-through RJ45 UTP cable to a VE.Bus port and the MK3-USB.
Connect the USB-A lead to the computer, or to a compatible Android device through a USB-OTG adapter.
Open VictronConnect or the appropriate Victron VE.Bus configuration tool and select the detected interface.
Save the original configuration before changing settings or applying firmware.

What you need

✓ Victron MK3-USB Interface — ASS030140000

✓ A separate straight-through RJ45 UTP cable in the length required by the installation

✓ A powered, supported Victron VE.Bus product

✓ A Windows PC, compatible Mac, Linux computer, or USB-OTG-capable Android device for the intended software workflow

✓ VictronConnect or the appropriate Victron VE.Bus configuration software

Complete the connection with a Victron RJ45 UTP cable

Select the straight-through cable length that matches the distance between the MK3-USB and VE.Bus device.

0.3m / approx. 1 ftSide-by-side service connection

0.9m / approx. 3 ftCompact electrical board

1.8m / approx. 5.9 ftTypical service reach

3m / approx. 9.8 ftLarger equipment bay

5m+ long-reach optionsRV, marine, and remote equipment routing

Use an industrially manufactured straight-through RJ45 UTP cable. Hand-crimped or crossover cables can cause connection problems.

Technical specifications

Exact part identification, interfaces, supported software, and intended applications.

Product identification

Manufacturer Victron Energy

Product name Interface MK3-USB (VE.Bus to USB)

Part number / SKU ASS030140000

Primary function Direct local configuration, diagnostics, and firmware updates for supported VE.Bus products

Standard warranty Victron five-year standard warranty

Physical interfaces

VE.Bus side Female RJ45 port

Computer side Integrated USB Type-A male lead

Required interconnect Separate straight-through RJ45 UTP cable between the MK3-USB and VE.Bus product

Interface type VE.Bus to USB

Power source USB and the powered VE.Bus product; the connected Victron device must be energized appropriately

Compatible Victron products

Inverter / charger families Multi, MultiGrid, MultiPlus, MultiPlus-II, Quattro, ECOmulti, EasySolar, and EasyPlus

Inverters Victron inverters equipped with a VE.Bus communication port

BMS VE.Bus BMS V2

Compatibility note Available functions depend on product hardware and firmware version

Software and platforms

VictronConnect Windows, macOS, Android, and Linux AppImage; functionality depends on the connected product and firmware

VEConfigure 3 Windows only

Additional VE.Bus tools VE.Bus Quick Configure, VE.Bus System Configurator, and VEFlash — Windows

Android connection Requires a compatible USB-OTG device and separately sourced OTG adapter

Apple iPhone / iPad No direct MK3-USB connection because iOS/iPadOS devices do not support the required USB-OTG mode

Linux note AppImage is provided as-is; USB access may require dialout-group membership

Configuration capabilities

Change VE.Bus settings Yes, on supported devices and firmware

Firmware updates Yes, on supported VE.Bus products

Battery charge profile Configure absorption, float, current limits, low-voltage behavior, and related settings to match the battery manual

AC input setup Configure shore-power / generator current limits and supported grid or input settings

Parallel / split-phase configuration Supported through the appropriate Victron VE.Bus configuration tools and approved system design

Diagnostics Read product information, retrieve settings, save configuration files, and support troubleshooting

Not intended for

VE.Direct products Not a VE.Direct-to-USB interface

Direct battery communication Does not connect directly to an Epoch battery BMS

Permanent monitoring Use a compatible GX device for continuous dashboards, VRM, and remote monitoring

Charging power Communication interface only; it does not charge a battery or power an inverter

Frequently asked questions

Victron MK3-USB Interface FAQs

Common questions about cables, software, operating systems, lithium setup, and VE.Bus compatibility.

Why do I need the Victron MK3-USB Interface?

The MK3-USB provides a direct local connection between a computer or compatible Android device and a Victron VE.Bus product. It is used to change inverter/charger settings, load or save configurations, perform firmware updates, diagnose problems, and commission systems such as MultiPlus, MultiPlus-II, Quattro, MultiGrid, and other supported VE.Bus devices.

Does the MK3-USB include the RJ45 cable that connects to the inverter?

The MK3-USB has a female RJ45 VE.Bus port and an attached USB-A computer lead. A separate straight-through RJ45 UTP cable is required between the MK3-USB and the VE.Bus port on the inverter or inverter/charger unless a retailer bundle specifically states that the cable is included.

Can I use the MK3-USB with a smartphone or tablet?

Direct MK3-USB use is supported with compatible Android devices that provide USB On-The-Go functionality, using a separately purchased OTG adapter. Apple iPhone and iPad devices do not support the required USB-OTG connection, so they cannot connect directly to the MK3-USB.

What software should I use with this interface?

VictronConnect is the modern option for compatible VE.Bus products and is available for Windows, macOS, Android, and Linux AppImage. Victron's advanced VE.Bus tools—including VEConfigure 3, VE.Bus Quick Configure, VE.Bus System Configurator, and VEFlash—are Windows applications. Product firmware and age can affect which functions are available in VictronConnect.

Can I use the MK3-USB to configure an Epoch lithium charge profile?

Yes. When a compatible Victron inverter/charger is connected, the MK3-USB lets you program charging voltages, current limits, low-battery behavior, AC input limits, and other VE.Bus settings to match the exact Epoch battery manual and system design. The MK3-USB is a communication interface, not a charger, and it does not connect directly to the battery.

Can the MK3-USB configure a Victron SmartSolar MPPT or SmartShunt?

Not through their VE.Direct ports. The MK3-USB is specifically a VE.Bus-to-USB interface. SmartSolar charge controllers, SmartShunts, and many smaller Victron products use VE.Direct, Bluetooth, VE.Can, or another interface and may require a VE.Direct-to-USB cable, Bluetooth, or a GX device instead.

Can I update MultiPlus or Quattro firmware with the MK3-USB?

Yes. Victron documents the MK3-USB for configuration and firmware updates on supported VE.Bus products. VictronConnect can update compatible products, while Victron's Windows VE.Bus software package also includes VEFlash and configuration tools for advanced or legacy installations.

Do I leave the MK3-USB connected permanently?

Usually not. It is primarily a commissioning, programming, firmware-update, and troubleshooting tool. After setup is complete, most installations remove it. For permanent monitoring, remote access, and system dashboards, a Victron GX product such as a Cerbo GX is generally the appropriate solution.

Will Windows automatically install the MK3-USB driver?

Windows 10 and later normally include a compatible driver, so additional driver installation is usually unnecessary. Victron also provides MK2/MK3 USB drivers for offline installations or troubleshooting. Linux users may need to add their account to the dialout group for USB access.

Which Victron products are supported?

Victron lists support for Multi, MultiGrid, MultiPlus, MultiPlus-II, Quattro, VE.Bus BMS V2, ECOmulti inverter/charger settings, EasySolar, EasyPlus, and inverters equipped with a VE.Bus communication port. Very old firmware or hardware can have limited VictronConnect support, so verify the product and firmware before commissioning.