Monitoring
Victron Cerbo GX power wiring diagram
See the Cerbo GX DC power-supply example and installation notes. The editable diagram shows power only; use the linked manuals to plan communications, displays and sensors.
- Continuous draw
- 0.3 A
Wiring diagram
How the Cerbo GX is wired.
Open this example in Crimp to use your own parts and cable lengths. Review the assumptions and installation notes as you adapt the circuit.
Power-supply sizing for this example
These sizes describe the example's DC supply circuit. Data, display, sensor and relay wiring are not represented; check the manual for your exact Cerbo model.
3 m one way
12 V system
- Wire
- 1.5 mm² · 16 AWG
- Example fuse
- 1 A
- Design current
- 0.3 A
- Voltage drop
- 0.1%
Sized against ABYC E-11. The design current is the part's continuous draw. The length is one way; voltage drop includes an equal-length return.
Run-length and manufacturer assumptions
The editable example uses 3.048 m (10 ft) runs unless a shorter run is stated. Metric overviews round these to 3 m. Adapt the parts and lengths to your installation before choosing cable and protection.
Supporting parts
- 6.1 m total of 1.5 mm² (16 AWG) marine cable
- Terminations for 1.5 mm² cable, matched to the equipment's screw terminals, leads or studs
- 1 A fuse and holder on the positive run
- Heat-shrink, strain relief and terminal boots sized to the cable
Check stud sizes, fuse type, run length and how warm the space gets against the gear you actually have before you order.
Installation notes
Before you install.
Open a question for model-specific guidance and sources.
Verified against the manufacturer's documentation (rev. Rev 41 — 09/2026), checked 2026-09-29. Manufacturer documentation →
What does the Cerbo GX add to a system?
The Cerbo GX collects information from compatible chargers, inverter/chargers, batteries and monitors, provides local control through Remote Console, and sends data to Victron's VRM portal when connected to the internet. A GX Touch 50 or GX Touch 70 is an optional display. The Cerbo itself does not replace a battery-current shunt. The SmartShunt 500A wiring example shows one separate battery-monitoring option; choose monitoring equipment that fits your system. The manual introduction explains the Cerbo's access options.
This catalog entry does not specify a hardware generation. The current manual's connection overview covers MK2 and MK3; check the part number on your unit before using its port counts, isolation details or expansion limits for an older Cerbo GX.
How do the two power terminals connect?
Crimp's +12V represents the positive DC supply input, and GND its negative return. The input actually accepts 8–70 V DC. Use the supplied power lead with its 3.15 A slow-blow fuse; Ethernet and USB cannot power the Cerbo. Victron recommends battery-derived DC power because supplying it from an inverter's AC output can lose monitoring during a shutdown and can create a restart deadlock with VE.Bus equipment. See Powering the Cerbo GX, printed page 6.
Which connections and settings still need planning?
The canvas shows power only. VE.Direct, VE.Bus, VE.Can, Ethernet, display, sensor and relay wiring are not represented by those two terminals. Connect compatible battery monitors and chargers using their supported data interface; a VE.Direct cable is limited to 10 m and must not be extended. Victron documents a VE.Direct-to-USB interface for longer routes and additional devices in Connecting Victron products.
Use Remote Console over the local network, the built-in WiFi access point or VRM. A VictronConnect Bluetooth connection handles initial setup and network configuration; Remote Console needs WiFi/LAN access. For units from serial HQ2242 onward, the initial Bluetooth PIN is printed on the unit. See access instructions.
Finally, select the intended Battery monitor under Settings → System Setup → Batteries. With multiple monitors, choose the source explicitly: Automatic can select any available monitor. Unmonitored DC loads or chargers can make an inverter/charger's calculated state of charge incomplete. See battery-monitor selection, printed page 113.
Fit check
Connect it to the rest of your system.
Describe your setup to draft a system with Cerbo GX connected. Review the selected parts and cable lengths, then edit the diagram in Crimp.
The model only picks parts and draws the connections. Every wire size and fuse rating still comes from Crimp's own sizing, never from the model.
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Technical reference
Specifications and terminal map.
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Catalog specification
System monitoring and control gateway with an 8–70 V DC supply. Connects compatible Victron equipment to local Remote Console and online VRM monitoring; GX Touch display available separately.
- Continuous draw
- 0.3 A
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
+12V
positive · input
GND
ground · input
Sources and sizing method
Equipment specifications. Model details, ratings and terminal roles come from the catalog. Check your unit’s label and current manufacturer documentation for its exact revision.
Example sizing. Sized against ABYC E-11. Boats built to UK or EU rules answer to ISO 13297 — check these figures against it before you build. Results use the example current and run length shown above. Set your actual equipment, lengths and installation conditions in Crimp before choosing hardware.
Read how the sizing worksNext step
Plan your installation with Cerbo GX.
Open this example as a new project, or add this component to your existing diagram. Use your equipment and cable lengths to review the sizing.
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