Victron Energy ASS030066150 15m RJ12 UTP Cable

15-metre RJ12 data cable—connects Victron BMV battery monitor shunts to display head units for flexible installation in motorhomes, boats, and off-grid power systems.

Product Overview

The Victron Energy ASS030066150 is a 15-metre RJ12 UTP (Unshielded Twisted Pair) data communication cable designed to connect Victron BMV battery monitor shunts to BMV display head units over extended distances. The cable carries low-voltage data signals that transmit battery voltage, current, and state-of-charge information from the shunt (mounted near batteries) to the remote display panel (installed in living areas, helm stations, or control panels). The 15-metre length suits installations in large motorhomes, sailing yachts, houseboat conversions, or off-grid solar systems where battery banks are located remotely from user-accessible monitoring locations—common in Australian caravan touring setups where batteries mount in front storage boxes but displays are needed in cabin areas. Standard BMV battery monitors ship with shorter RJ12 cables; the ASS030066150 provides replacement or extension capability when factory cable length is insufficient. The UTP construction carries data reliably over 15 metres without signal degradation, maintaining accurate battery monitoring in 12V, 24V, or 48V DC systems. Compatible with Victron BMV-700, BMV-702, BMV-712 Smart, and other BMV-series battery monitors requiring shunt-to-display connectivity.

Key Specifications

• Product: RJ12 UTP data communication cable
• Part number: ASS030066150
• Brand: Victron Energy
• Cable length: 15 metres
• Cable type: UTP (Unshielded Twisted Pair)
• Connector type: RJ12 (6P6C) both ends
• Application: Connects BMV shunt to BMV head unit/display
• Data transmission: Battery monitor telemetry (voltage, current, SOC)
• Compatible products: Victron BMV-series battery monitors (BMV-700, BMV-702, BMV-712, etc.)
• Voltage rating: Low-voltage data (safe for all BMV applications)
• Cable construction: Twisted pair (reduces electromagnetic interference)
• Jacket material: Not specified (PVC expected, typical for UTP cables)
• Operating temperature: Not specified (typical -20°C to +60°C for data cables)

Features & Benefits

15-Metre Length for Remote Installations
Extended cable run accommodates large motorhomes, boats, or off-grid setups where battery banks are physically distant from user-accessible monitoring locations. Eliminates the need to splice multiple shorter cables or relocate displays to inconvenient positions near battery compartments—critical for maintaining monitoring visibility in living spaces, helm stations, or control panels.

Connects BMV Shunt to Display Head Unit
Carries data signals from the BMV shunt (current sensor mounted on battery negative terminal) to the remote display panel—transmits real-time battery voltage, current draw, state of charge, and time remaining. Essential for accurate battery monitoring in systems where the shunt must mount near batteries but the display needs visibility in occupied areas.

UTP Construction Reduces Interference
Twisted pair wiring configuration minimises electromagnetic interference from nearby AC wiring, inverters, or electric motors—maintains data signal integrity over the 15-metre run. Important in motorhome and marine environments where data cables route alongside high-current DC and AC power cables that generate electrical noise.

Replacement or Extension for Standard BMV Cables
Standard BMV battery monitors ship with shorter RJ12 cables (typically 5-10 metres)—the ASS030066150 provides replacement when factory cables are damaged, lost, or insufficient for installation requirements. Allows flexible system design without being constrained by original cable lengths included with monitors.

Plug-and-Play RJ12 Connectors
Standard RJ12 (6P6C) plugs on both ends connect directly to BMV shunts and display head units without crimping, soldering, or specialised tools. Simplifies installation and allows cable replacement or system reconfiguration without electrical expertise—critical for DIY caravan solar installations or boat electrical upgrades.

Compatible with Multiple BMV Models
Works with Victron BMV-700, BMV-702, BMV-712 Smart, and other BMV-series battery monitors using RJ12 shunt-to-display connectivity. Single cable part number covers various BMV models, reducing inventory complexity for installers managing multiple Victron systems.

Technical Specs

• Product: RJ12 data communication cable
• Part number: ASS030066150
• Manufacturer: Victron Energy
• Cable length: 15 m / 49.2 ft
• Cable type: UTP (Unshielded Twisted Pair)
• Connector 1: RJ12 (6P6C) male plug
• Connector 2: RJ12 (6P6C) male plug
• Wire gauge: Not specified (typical 26-28 AWG for RJ12 data cables)
• Number of conductors: 6 (standard RJ12 configuration)
• Data transmission: Low-voltage digital signals
• Application: Victron BMV battery monitor shunt-to-display connection
• Compatible products: BMV-700, BMV-702, BMV-712 Smart, BMV-series monitors
• Shielding: None (UTP—unshielded)
• Jacket material: Not specified (PVC expected)
• Jacket colour: Not specified
• Operating voltage: Low-voltage data (safe for all DC systems)
• Operating temperature: Not specified (typical -20°C to +60°C)
• Bend radius: Not specified (typical >25mm for data cables)
• Weight: Not specified

Compatible With / Goes Well With

Victron BMV Battery Monitors:

• Victron BMV-700 Battery Monitor
• Victron BMV-702 Battery Monitor (dual-bank monitoring)
• Victron BMV-712 Smart Battery Monitor (Bluetooth)
• Victron BMV-600S (older models, verify compatibility)
• Any Victron BMV-series monitor using RJ12 shunt-to-display connection

Installation Scenarios:

• Motorhomes with front-mounted battery boxes and cabin-mounted displays
• Sailing yachts with engine room batteries and helm-mounted monitors
• Houseboats with hull-mounted battery banks and living area displays
• Off-grid solar systems with external battery sheds and indoor control panels
• 4WD dual-battery systems with rear auxiliary batteries and dash-mounted monitors

Complementary Victron Products:

• Victron BMV shunts (500A, 1000A, etc.)
• Victron VE.Direct cables (for BMV-to-GX device connections)
• Victron SmartShunt (Bluetooth-enabled alternative to BMV systems)
• Cable management clips and conduit for tidy installations

Note: This cable is specifically for BMV shunt-to-display connections. It is NOT compatible with VE.Direct, VE.Bus, or other Victron communication protocols. Verify your BMV model uses RJ12 connectivity before ordering.

Frequently Asked Questions

Can I use this cable to connect my BMV monitor to a Cerbo GX?

No, the ASS030066150 is designed exclusively for BMV shunt-to-display head unit connections using RJ12 plugs. BMV-to-GX device connections (Cerbo GX, Color Control GX, etc.) require VE.Direct cables with different connectors. For GX device integration, purchase a Victron VE.Direct cable separately—these have one RJ12 end (BMV side) and one VE.Direct connector (GX side).

Will this cable work with non-Victron battery monitors?

The ASS030066150 is designed specifically for Victron BMV battery monitors with RJ12 connectivity. While the physical RJ12 connector may fit other devices, the pinout and data protocol are Victron-specific. Using this cable with non-Victron equipment may result in non-function or incorrect data display. Always use manufacturer-specified cables for non-Victron battery monitoring systems.

Can I splice or extend this cable if 15 metres isn't quite enough?

While technically possible to splice RJ12 data cables, it's not recommended—splices introduce resistance, potential signal degradation, and connection points that may fail due to vibration in mobile applications. Victron offers cables up to 30 metres (ASS030066300)—if 15m is insufficient, purchase the appropriate longer cable rather than splicing. For distances exceeding 30m, contact Frankies Auto Electrics for alternative solutions.

How should I route this cable in my motorhome or boat?

Route RJ12 data cables away from high-current AC wiring, inverters, alternators, and electric motors to minimise electromagnetic interference. Use cable ties or conduit to secure the cable along chassis rails, behind panels, or through cable management channels. Avoid sharp bends (maintain bend radius >25mm) and protect the cable from abrasion, heat sources, and moisture ingress at connection points.

What's the difference between this cable and VE.Direct cables?

ASS030066150 is an RJ12-to-RJ12 cable for BMV shunt-to-display connections carrying battery telemetry data. VE.Direct cables connect BMV monitors to GX devices (Cerbo GX, Venus GX, etc.) for system integration and have one RJ12 end and one VE.Direct connector. They serve different purposes and are not interchangeable—verify which connection type your installation requires before ordering.