Blue Smart IP22 12/30-3
Victron Blue Smart IP22 12/30 (3) wiring diagram
12 V / 30 A AC charger with three FET-isolated positive outputs, one common negative and one shared charge profile. The 30 A total is shared across all outputs. Sold as separate 230 V (180–265 VAC) and 120 V (100–130 VAC) models.
- Rated output
- 30 A
Wiring diagram
How the BS IP22 30-3 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
- 10 mm² · 8 AWG
- Example fuse
- 40 A
- Design current
- 30 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
- 6.1 m total of 10 mm² (8 AWG) marine cable
- Terminations for 10 mm² cable, matched to the equipment's screw terminals, leads or studs
- 40 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. 05 - 08/2025), checked 2026-09-29. Manufacturer documentation →
Which Blue Smart IP22 12/30 is this?
The 12/30 (3) charges up to three 12 V banks with 30 A total. Any output can supply the full current, but the three outputs share that ceiling. The FET isolator prevents current passing between batteries; all outputs follow one charging profile, so the banks must accept the same charge voltages. These details are in the manual, section 4.7, page 15.
The catalog covers separate 120 V and 230 V versions. This manual covers the 230 V version, with a 180–265 VAC input range. Check the charger's label before selecting shore power.
How do the drawn terminals map to the charger?
BATT 1 +, BATT 2 + and BATT 3 + represent the three positive outputs. The real charger has one common negative terminal: the three drawn BATT − connections represent that shared return. The manufacturer's three-bank diagram uses a negative busbar and a protected positive lead to each bank. The AC terminals in Crimp represent the supplied mains cable, rather than a user-accessible AC terminal block. See section 5.2.3, page 24.
What cable, protection and mounting details matter?
- Battery protection: section 5.2.2 recommends a 40–70 A fuse or breaker range for the 12/30, coordinated with the installed cable and located near each battery. The charger's own 40 A output fuse does not protect the whole battery cable.
- Cable length: section 5.2.1 specifies at least 10 mm² / 8 AWG through 3 m one way, and 16 mm² / 6 AWG for 3–4.5 m. Its 4.5–6 m range is not recommended. These assume 90°C cable, 30°C ambient, unbundled open routing and at most 3% voltage drop; the table assumes a return of equal length.
- Terminations and cooling: DC terminals accept up to 16 mm² / 6 AWG and tighten to 2.4 Nm. Mount upright, terminals down, with 100 mm clear above and below, in a dry ventilated location away from battery gases.
What needs configuring before charging?
Select the profile and current limit in VictronConnect to suit every connected battery. Low-current mode limits this model to 15 A. Crimp's cable calculation does not select the charge profile, verify AC protection or allocate charge current between banks; review the manual's cable table alongside the calculated example.
Fit check
Connect it to the rest of your system.
Describe your setup to draft a system with Blue Smart IP22 12/30-3 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
12 V / 30 A AC charger with three FET-isolated positive outputs, one common negative and one shared charge profile. The 30 A total is shared across all outputs. Sold as separate 230 V (180–265 VAC) and 120 V (100–130 VAC) models.
- Rated output
- 30 A
- Planning charge current
- 28 A
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
AC L
neutral · input
AC N
neutral · input
AC ⏚
ground · bidi
BATT 1 +
positive · output
BATT 1 −
negative · output
BATT 2 +
positive · output
BATT 2 −
negative · output
BATT 3 +
positive · output
BATT 3 −
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 BS IP22 30-3.
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