Charger
Victron Orion-Tr 48/12-30 wiring diagram
Isolated 48-to-12 V converter for regulated DC loads: 32–70 V input, 30 A nominal output and 10–15 V adjustment. Victron specifies that this non-Smart family is not intended for battery charging. External input fuse required.
- Nominal input
- 48 V
- Nominal output
- 12 V
- Rated output
- 30 A
Wiring diagram
How the Orion 48/12-30 is wired.
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Cable sizing for this example
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Installation notes
Before you install.
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Verified against the manufacturer's documentation (rev. Version 07 — September 25, 2024), checked 2026-10-01. Manufacturer documentation →
Which Orion is this?
This is the Orion-Tr 48/12-30 isolated DC-DC converter, without “Smart” in the name. It supplies a lower-voltage DC load from a nominal 48 V source. Victron's current converter datasheet explicitly says this family is not intended for battery charging and points to Orion-Tr Smart chargers instead. An adjustable output and remote switch do not provide a battery charge profile or BMS integration.
The older installation leaflet mentions connecting a battery after voltage adjustment. That sentence does not override the current product guidance. Use this entry for a regulated load supply; verify a separate, suitable charging product if the destination is a battery.
How do the terminals map?
Crimp's IN + / IN − represent the 48 V source connections; OUT + / OUT − feed the lower-voltage load circuit. Input and output are galvanically isolated. Do not add a negative bridge merely because other converters use a common negative; bonding depends on the complete installation.
The green remote connector and voltage-adjustment potentiometer are omitted from the symbol. The remote wire bridge can be replaced by a low-current switch, following the installation leaflet. It is a control circuit, not a load-current connection.
What limits apply?
The 48/12-30 column lists 32–70 V input, a nominal 12.2 V output, and 10–15 V adjustment. Rated continuous output is 30 A at nominal voltage and 40°C, with 360 W continuous output at 40°C. Raising output voltage changes the available operating margin; the model number is not a promise of the same power at every setting.
Set and measure the output before connecting sensitive loads. Check their maximum voltage and startup demand against the chosen setting.
What protection and mounting are needed?
The 48 V input models have no internal input fuse. Provide external source-circuit protection; neither document supplies a universal fuse amperage for these two installations. Select protection against the actual source fault current, conductor, and load requirements.
The terminals accept up to 16 mm² / AWG 6. Mount in a cool, dry, ventilated location with screw terminals downward for the stated IP43 protection. Output derating is specified above 40°C. Internal overload protection does not protect an undersized source cable or establish a battery-charging design.
Fit check
Connect it to the rest of your system.
Describe your setup to draft a system with Orion-Tr 48/12-30 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
Isolated 48-to-12 V converter for regulated DC loads: 32–70 V input, 30 A nominal output and 10–15 V adjustment. Victron specifies that this non-Smart family is not intended for battery charging. External input fuse required.
- Nominal input
- 48 V
- Nominal output
- 12 V
- Rated output
- 30 A
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
IN +
positive · input
IN −
negative · input
OUT +
positive · output
OUT −
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. Wire sizes and fuse ratings apply to the connected example, not a fixed cable size for this component. Set your actual equipment, current, lengths and installation conditions in Crimp before choosing hardware.
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Plan your installation with Orion 48/12-30.
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