Monitoring
Victron Venus GX wiring diagram
Compact GX system control & VRM gateway. Predecessor to Cerbo GX, still widely deployed.
- Continuous draw
- 0.2 A
Wiring diagram
How the Venus 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.
Cable sizing for this example
Use the diagram as a starting point for your installation. Replace the example equipment and cable lengths with your own, and check the connections against your exact model's instructions.
3 m one way
12 V system
- Wire
- 1.5 mm² · 16 AWG
- Example fuse
- 1 A
- Design current
- 0.2 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. 40 - 04/2026), checked 2026-10-01. Manufacturer documentation →
Which GX device is covered?
This is the Venus GX, the compact controller without an attached touchscreen. Use Remote Console through its network interface to configure it. Do not apply Cerbo or Ekrano port counts merely because they run related software: Venus has its own connections diagram in manual §3.1.
How do power and protection connect?
Connect Power in V+ and negative to an 8–70 V DC supply. Ethernet and USB cannot power the unit. Manual §3.3 specifies a supplied 3.15 A slow-blow inline fuse; keep that protection in the supply lead. The technical table gives 210 mA at 12 V, 110 mA at 24 V and 60 mA at 48 V. These are operating figures, not fuse ratings or a budget for every attached peripheral.
The canvas uses the supplied 3.15 A fused lead as its modeled supply ceiling; this is not a published connector-current rating. The canvas shows the supply circuit. Data leads, relays and sensor inputs are outside it. If a battery shunt is installed, the GX supply return belongs on its system side. In an original VE.Bus BMS installation, follow the load-disconnect supply arrangement; V2 and NG have dedicated GX power outputs.
Which communication ports are easy to confuse?
The two VE.Direct ports are separate. The VE.Bus pair and VE.Can pair are each parallel sockets within their respective interfaces; they are not additional Ethernet ports. The separate second CAN interface also has different isolation characteristics. Select the required CAN profile and terminators for the actual connected battery or charger. Never connect an unknown RJ45 cable based on connector shape alone.
What should be verified after startup?
Connect to Remote Console, set network access, check the device list and choose the correct battery monitor. Confirm charging and load readings locally before relying on VRM history. The manual warns that a GX powered only from an inverter's AC output can prevent recovery after shutdown; review §3.3 when choosing its supply. Keep the electronics and connectors in a protected dry location, and check supply voltage and fuse first if the device will not boot.
Fit check
Connect it to the rest of your system.
Describe your setup to draft a system with Venus 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.
Enable JavaScript to describe your system.
Technical reference
Specifications and terminal map.
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Catalog specification
Compact GX system control & VRM gateway. Predecessor to Cerbo GX, still widely deployed.
- Continuous draw
- 0.2 A
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
V+ (8–70V)
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 Venus 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.
Start drawing, sizing and checking without an account. Your drawing saves in this browser. See Pricing for the equipment allowance and the one-time export offer available to you.