Orion-Tr 12/12-9 (110W)
Victron Orion-Tr 12/12-9 wiring diagram
Orion-Tr 12/12-9 isolated DC supply for loads: 8–17V input, 10–15V adjustable output, 9A/110W at 25°C and 85W at 40°C. Victron explicitly states it is not intended for battery charging.
- Nominal input
- 12 V
- Nominal output
- 12 V
- Rated output
- 9 A
Wiring diagram
How the Orion 9A 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
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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 →
What does this Orion actually do?
The Orion-Tr 12/12-9 isolated is an adjustable DC power supply for loads. It is the non-Smart 110 W converter, not an Orion-Tr Smart battery charger. Victron's current datasheet explicitly says this converter is not intended for battery charging. A voltage-adjustment screw does not provide a bulk/absorption/float algorithm or chemistry protection.
The input range is 8–17 V, with 12.2 V nominal output, adjustable over 10–15 V. Its 9 A continuous rating applies at nominal output and 25°C; available continuous power falls from 110 W at 25°C to 85 W at 40°C. Do not interpret the catalog's current estimate as a battery charge setting.
How do the connections map?
IN + / IN − connect the protected source; OUT + / OUT − feed the load circuit. The isolated input and output negatives are separate: joining them externally removes that isolation. The physical unit also has a green remote on/off connector and an output-voltage adjuster, omitted from the power-terminal drawing.
The supplied remote jumper enables operation. An external low-current switch can replace it; the manual describes a switched current below 100 mA. Keep remote-control wiring distinct from power wiring. The power terminals accept up to 6 mm² / AWG 10; the reviewed converter manual does not provide a tightening torque, so do not borrow one from a larger Smart model.
How is it protected and commissioned?
The 12 V-input model has a nonreplaceable internal input fuse. This does not establish an external battery-cable fuse size: protect the source wiring according to its conductor and installation. The manual does not provide a model-specific external fuse amperage for the 12/12-9.
With the downstream load disconnected, connect the input and set the output voltage to the load's requirement before attaching it. Verify polarity and voltage with a meter. Output overload/short-circuit protection is not permission to undersize battery wiring. A high adjusted output also raises the minimum input needed to maintain regulation; check the datasheet footnote when designing close to the lower input limit.
Where can it operate?
Install in a cool, dry, ventilated place with terminals downward; IP43 protection is conditional on that orientation. Leave room for cooling and inspect connections for heating under sustained load. Use a dedicated battery charger when the destination is a house battery requiring a charging profile.
Fit check
Connect it to the rest of your system.
Describe your setup to draft a system with Orion-Tr 12/12-9 (110W) 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
Orion-Tr 12/12-9 isolated DC supply for loads: 8–17V input, 10–15V adjustable output, 9A/110W at 25°C and 85W at 40°C. Victron explicitly states it is not intended for battery charging.
- Nominal input
- 12 V
- Nominal output
- 12 V
- Rated output
- 9 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 9A.
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