Description
xVictron Orion-Tr 12/48-8A (380W) Isolated DC-DC Converter
The Victron Orion-Tr 12/48-8A is a galvanically isolated DC-DC converter that steps up a 12V DC input to a regulated 48V DC output at up to 8A, delivering 380W of continuous power. It is designed for professional mobile, marine and off-grid installations where two battery banks must remain electrically isolated from one another.
Key Features
- Galvanic isolation between input and output, preventing ground loops and protecting sensitive electronics in dual-battery systems.
- 12V input to 48V output conversion at up to 8A continuous output current, rated at 380W.
- Wide input voltage range suitable for 12V lead-acid and lithium battery systems with varying state of charge.
- Output voltage is adjustable, allowing fine-tuning to match the charge requirements of the destination battery bank.
- Compact, enclosed metal housing rated for demanding environments, with a weight of 1.8 kg.
- Can be used in parallel with additional Orion-Tr units to increase total output current where higher power is required.
- Compatible with Victron's broader ecosystem, including integration into systems monitored via VE.Smart Networking (where supported by the wider installation).
Product Overview
The Orion-Tr isolated series uses a transformer-based topology to provide true galvanic isolation between the source and destination circuits. This is a practical requirement in many marine and vehicle installations, where chassis grounds, shore power references or multiple battery banks would otherwise create unwanted current paths or interference. The isolation also adds a layer of protection against fault propagation between battery banks.
Stepping up from 12V to 48V makes this converter well suited to installations where a 48V service bank, traction system or telecom load must be charged or powered from a 12V alternator or house battery. The adjustable output voltage means the unit can be set to deliver the correct absorption or float voltage for the connected battery chemistry, whether lead-acid, AGM, gel or lithium. At 380W continuous, the 8A output is sufficient for moderate charging duties or powering 48V DC loads directly.
The Orion-Tr 12/48-8A can be mounted in any orientation and does not require forced cooling under normal operating conditions. Multiple units can be wired in parallel on the output side if the application demands more than 8A at 48V, giving installers a scalable solution without requiring a larger single converter.
Technical Specifications
| Parameter | Value |
| SKU | ORI124838110 |
| Input Voltage (nominal) | 12V DC |
| Output Voltage (nominal) | 48V DC (adjustable) |
| Output Current (maximum) | 8A |
| Rated Output Power | 380W |
| Isolation | Galvanic (transformer-based) |
| Weight | 1.8 kg |
| GTIN | 8719076063650 |
Applications
- Charging a 48V lithium or lead-acid battery bank from a 12V vehicle or vessel alternator system.
- Powering 48V DC telecom or data equipment from a 12V house battery in off-grid cabins or remote installations.
- Marine dual-battery installations where galvanic isolation is required to prevent corrosion and ground loop issues.
- Motorhome and campervan conversions with mixed-voltage DC systems requiring isolated voltage step-up.
- Industrial and mobile applications where a 48V load must be fed from a 12V source without a shared ground reference.
What Is Included
- 1 x Victron Orion-Tr 12/48-8A (380W) Isolated DC-DC Converter
Installation Notes
This converter handles significant DC currents on the 12V input side. Correct cable sizing and fusing on both the input and output circuits is essential. Installation should be carried out by a qualified electrician or experienced marine/vehicle systems installer familiar with DC power systems. Ensure the input supply is adequately protected and that the output voltage is set correctly for the connected battery chemistry before commissioning. In marine installations, follow NMEA or relevant national wiring standards for DC systems.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.