SmartSolar 100/50
Victron SmartSolar MPPT 100/50 wiring diagram
Connect your solar array to a 12 V or 24 V house bank through the SmartSolar 100/50. See the terminal pairs, battery fuse and cable assumptions, then adapt the example to your panels.
- Compatible systems
- 12 V / 24 V
- Rated output
- 50 A
- PV open-circuit limit
- 100 V
Connection essentials
Battery first
BATT+ / BATT− → house bank. Wait 10 seconds and verify the system voltage before connecting PV.
Check the array
PV+ / PV− → solar panels. Check cold-weather Voc against 100 V; the pictured array is a placeholder.
Loads use distribution
There is no physical LOAD output. Lights, a fridge and an inverter need protected battery circuits.
Wiring diagram
How the MPPT 100/50 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.
Battery-side sizing for this example
The sizes below describe the battery-side charge circuit. The editable example also includes a placeholder solar array; replace it with your panels before reviewing PV wiring and protection.
3 m one way
12 V system
- Wire
- 16 mm² · 6 AWG
- Example fuse
- 70 A
- Design current
- 50 A
- Voltage drop
- 2.7%
Sized against ABYC E-11. The design current is the unit's rated output. 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 m total of 16 mm² (6 AWG) marine cable
- Terminations for 16 mm² cable, matched to the equipment's screw terminals, leads or studs
- 70 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. 12 — 06/2026), checked 2026-09-11. Manufacturer documentation →
What connects where, and what comes first?
Battery first, then solar. For this SmartSolar MPPT 100/50, follow Victron's connection sequence:
- BATT + / BATT −: connect the house bank, with protection on the battery-positive cable.
- Wait 10 seconds: check the detected system voltage and the battery charge profile.
- PV + / PV −: connect the solar array after checking polarity.
This is the SmartSolar model with Bluetooth and VE.Direct. Use the 100/50 column in the shared 100/30 and 100/50 manual.
What battery fuse and cable does the 100/50 need?
Victron specifies a 55–70 A battery fuse. The fuse displayed in this example is Crimp's calculated choice within that range; it is not a PV-string fuse. See the battery-fuse table.
The battery-side example uses a 3 m one-way cable path. Voltage drop includes the return. The manual requires mounting within 3 m of the battery, and lists 16 mm² / AWG6 power terminals. Check cable fit, route, heat and bundling before using the displayed size; the terminal capacity alone does not select the cable.
Can I use the solar array shown in the example?
Replace it with your own panels before relying on PV sizing. The 400 W array is a placeholder at 20 V operating voltage and 24 V open-circuit, feeding a placeholder 12 V, 200 Ah bank. It is not a selected panel product or a prediction of 50 A charging.
Check these separate 100/50 limits:
- 100 V: maximum PV open-circuit voltage, including the cold-weather rise.
- 60 A: maximum array short-circuit current.
- 50 A: rated battery charge output, used for the battery-side sizing here.
PV protection depends on the actual panel requirements and series/parallel arrangement.
Where do lights, a fridge or an inverter connect?
Use protected battery distribution circuits. The 100/50 has no physical LOAD output; the manual's virtual load output is a control feature.
The starter covers charging. See the campervan and RV solar examples for a complete system, or add a fuse block for suitable load branches.
How do I adapt the example to my installation?
Enter your actual panels, battery and one-way cable lengths in the editable example. Use the wire size calculator to compare a cable run, and the battery conversion guide when changing chemistry. The methodology explains the sizing assumptions and limits.
Fit check
Connect it to the rest of your system.
Describe your setup to draft a system with SmartSolar 100/50 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
MPPT solar charge controller. 50A output, max 700W @ 12V / 1400W @ 24V, 100V PV. Keep the array's cold-weather Voc under 100V.
- Compatible systems
- 12 V / 24 V
- Rated output
- 50 A
- Planning charge current
- 50 A
- PV open-circuit limit
- 100 V
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
PV +
positive · input
PV −
negative · input
BATT +
positive · output
BATT −
negative · output
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 MPPT 100/50.
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.