Victron RJ12 UTP Cable 1.8m - ASS030066018
Victron RJ12 UTP Cable 1.8m - ASS030066018
Genuine Victron BMV data cable
Victron Energy RJ12 UTP Cable 1.8m (6ft) | Part # ASS030066018
The genuine six-core Victron BMV data cable for a clean, reliable shunt-to-display connection.
The Victron RJ12 UTP Cable 1.8m, part ASS030066018, connects a supported Victron BMV battery-monitor shunt to its physical BMV head unit. This genuine 1.8 meter RJ12 cable gives RV, marine, and off-grid installers approximately 6 feet of reach for accurate battery-monitor routing without relying on unsuitable telephone cords or confusing it with an RJ45 network cable.
Built for dependable BMV monitoring
Flawless Data for Your Victron BMV Monitor
Your battery monitor can only display accurate information when the shunt and head unit maintain a reliable connection.
This genuine Victron RJ12 UTP cable is the correct link between a supported BMV shunt and the physical BMV display head. The BMV uses the six-conductor cable to pass its monitoring signals and operate the head unit, making correct conductor count and cable construction essential.
The 1.8-meter length is especially useful when the shunt is mounted under a seat, inside a battery cabinet, or in a nearby marine compartment while the display is installed on a dashboard, wall, or control panel.
The Standard for BMV Battery Monitors
Use this Victron BMV data cable with supported BMV systems that have a separate shunt and head unit, including BMV-700, BMV-702, BMV-712 Smart, and supported high-voltage BMV models. Plug one RJ12 end into the shunt and the other into the RJ12 port on the rear of the display head.
1.8 Meters (6 Feet) for Dash and Wall Routing
At approximately 5.9 feet long, the cable provides practical reach from a battery compartment to a nearby monitor location without the large coil created by the standard 10-meter BMV cable. Leave a small service loop and avoid placing tension on either connector.
Do Not Risk Your Monitor on Cheap Telephone Wire
Similar-looking plugs do not guarantee the correct cable construction.
Victron warns that common telephone leads may omit conductors and often are not twisted-pair cable. A phone cord can physically fit an RJ12-style socket while still producing a blank display, unstable readings, or intermittent communication. The correct replacement is a manufactured six-core RJ12 UTP cable designed for the BMV connection.
Six-Core UTP Reliability
UTP means Unshielded Twisted Pair. Victron specifies a six-conductor UTP cable for the BMV shunt-to-head-unit connection and recommends pre-manufactured cables to avoid missing wires, incorrect conductor order, and poor field crimps.
Secure RJ12 Modular Connectors
RJ12 plugs on both ends click into the supported shunt and head-unit sockets for a removable, serviceable connection. Route and support the cable so vibration, sharp edges, or cable weight cannot pull against the modular latches.
Compatible applications
Replacement and custom-length routing for supported Victron BMV battery monitors.
- ✓ Connecting a compatible Victron BMV shunt to its physical BMV head unit.
- ✓ Replacing the standard BMV RJ12 cable when the included 10-meter cable is longer than needed.
- ✓ Routing a BMV display from an under-seat shunt to a nearby RV dashboard or wall panel.
- ✓ Connecting a marine battery-monitor shunt to a helm or cabin-mounted BMV display.
- ✓ Clean BMV-700, BMV-702, and BMV-712 Smart replacement or service installations.
- ✓ Supported BMV-700H and BMV-710H Smart installations with separate shunt and head unit.
- ✓ Troubleshooting a BMV system when a damaged or intermittent RJ12 cable is suspected.
Cable features
Exact part matching and the correct cable architecture for supported BMV systems.
Technical Specifications
Exact part identification, length, connector format, and BMV compatibility guidance.
| Cable specifications and compatibility | |
|---|---|
| Manufacturer | Victron Energy |
| Epoch product title | Victron RJ12 UTP Cable 1.8m - ASS030066018 |
| Part number / SKU | ASS030066018 |
| Length | 1.8 meters / approximately 5.9 feet / 70.9 inches |
| Cable type | UTP — Unshielded Twisted Pair |
| Conductor count | 6-core / six-conductor cable |
| Connector type | RJ12 plug to RJ12 plug |
| Primary application | Connect a supported Victron BMV shunt to the BMV head unit |
| Example BMV compatibility | BMV-700, BMV-702, BMV-712 Smart, BMV-700H, and BMV-710H Smart systems that use RJ12 |
| SmartShunt compatibility | No — SmartShunt does not use the BMV RJ12 head-unit cable |
| VE.Bus / VE.Can compatibility | No — those networks normally use RJ45 UTP cables |
| VE.Direct compatibility | No — VE.Direct uses a dedicated four-pin cable |
| Cerbo GX connection | Not direct; connect the BMV head unit to GX equipment with the appropriate VE.Direct cable |
| BMV supplied-cable context | BMV monitors commonly include a 10m RJ12 UTP cable; this 1.8m version is a shorter replacement option |
| Available Victron RJ12 lengths | 0.3m to 30m |
| Electrical function | Low-voltage BMV monitoring connection; not a battery or inverter power cable |
| Cable family color | Gray |
| Compliance | Victron network-cable Declaration of Conformity: CE / EMC / Low Voltage / RoHS requirements |
| Manufacturer warranty | Victron standard 5-year warranty |
Basic connection path
BMV shunt → RJ12 cable → BMV head unit.
- Install and wire the BMV shunt according to the BMV manual.
- Insert one end of the RJ12 cable into the shunt’s RJ12 terminal.
- Route the cable through a dry, protected path with suitable support and strain relief.
- Insert the other end into the RJ12 terminal on the rear of the BMV head unit.
- Use a separate VE.Direct cable if the BMV display also needs to communicate with a compatible GX device.
Related Victron monitor components
Common companion items for BMV installation and GX integration.
Victron RJ12 UTP Cable 1.8m FAQs
Common questions about BMV compatibility, RJ12 versus RJ45, cable length, SmartShunt, GX connections, and telephone cords.
What is the difference between this RJ12 cable and an RJ45 cable?
They are different connector sizes used for different Victron functions. This RJ12 cable uses the smaller six-conductor format for the connection between a compatible BMV shunt and BMV head unit. Victron RJ45 cables use the wider eight-position connector for supported VE.Bus and VE.Can networks. They are not interchangeable.
What devices use the Victron ASS030066018 RJ12 cable?
This cable is intended for Victron BMV battery monitors that use a separate shunt and physical head unit, including supported BMV-700, BMV-702, BMV-712 Smart, BMV-700H, and BMV-710H Smart installations. Confirm that both your shunt and display have RJ12 ports before ordering.
How long is a 1.8-meter cable in feet?
1.8 meters is approximately 5.9 feet, or 70.9 inches. It is a useful mid-length option for routing from a battery shunt under a seat or inside a battery bay to a nearby BMV display mounted on a dashboard, panel, or wall.
Can I use a standard six-pin telephone cord instead?
No. Victron specifically warns that common telephone cables may not contain all six conductors and are often not twisted-pair cable. A telephone cord can cause missing readings, unstable operation, or a blank BMV display. Use a manufactured six-core RJ12 UTP cable intended for the Victron BMV system.
Does this cable work with a Victron SmartShunt?
No. A SmartShunt does not use this RJ12 shunt-to-head-unit connection because it does not have a separate BMV display head. SmartShunt communication is handled through Bluetooth and VE.Direct, depending on the installation.
Does this cable connect a BMV monitor directly to a Cerbo GX?
No. This RJ12 cable connects the BMV shunt to the BMV head unit. To connect a compatible BMV head unit to a Cerbo GX or another GX device, use the appropriate VE.Direct cable from the VE.Direct port on the BMV display.
Is this cable used for VE.Bus or VE.Can communication?
No. VE.Bus and VE.Can normally use the larger RJ45 UTP cable format. This RJ12 cable is specifically for the BMV shunt-to-head-unit connection and should not be plugged into VE.Bus, VE.Can, Ethernet, or BMS-Can ports.
Can I make or splice my own RJ12 cable?
Victron recommends using pre-manufactured RJ12 UTP cables because incorrect conductor order, missing conductors, or poor crimps can cause difficult-to-diagnose BMV errors. Use this factory-assembled cable instead of cutting, extending, or field-crimping a telephone-style lead.
Is this cable suitable for routing through an RV or boat?
It can be routed through a protected RV, marine, or off-grid electrical installation when properly secured. Keep it away from sharp edges, moving parts, heat sources, standing water, and high-current power cables where practical. Use grommets, strain relief, and cable support appropriate to the installation.
What if 1.8 meters is not the right length?
Victron offers RJ12 UTP cables in multiple lengths from 0.3 meters up to 30 meters. Choose the shortest length that reaches comfortably while allowing a small service loop and avoiding tension at either RJ12 connector.