Description
xVictron Orion-Tr 48/12-20A (240W) Isolated DC-DC Converter — ORI481224110
The Victron Orion-Tr 48/12-20A is a galvanically isolated DC-DC converter that steps a 48V DC input down to a regulated 12V DC output at up to 20A (240W). It is designed for professional installations where electrical isolation between two DC systems is required, such as powering 12V auxiliary loads from a 48V battery bank or vehicle system.
Key Features
- Galvanic isolation between input and output eliminates ground loop issues and protects sensitive equipment from voltage spikes on the source circuit.
- 48V input to 12V output conversion at 20A continuous, delivering up to 240W of regulated DC power.
- Wide input voltage range accommodates real-world battery voltage fluctuations across 48V systems.
- Compact, enclosed housing suitable for fixed installation in vehicles, vessels and off-grid enclosures.
- Output voltage is adjustable, allowing fine-tuning to suit specific load or charging requirements.
- High conversion efficiency reduces heat generation and minimises power loss in the conversion stage.
- Victron Orion-Tr range is widely used in marine, automotive and off-grid applications where dual-voltage DC architectures are common.
Product Overview
The Orion-Tr isolated DC-DC converters differ from non-isolated units in that the input and output circuits share no common ground. This matters in practice when integrating a 12V auxiliary system into a 48V main system, particularly on vessels or vehicles where chassis grounds, bonding requirements and sensitive electronics make ground loops a genuine risk. The galvanic isolation barrier prevents fault currents from passing between the two circuits and allows each side to be referenced independently.
At 240W output, this unit is capable of running 12V lighting circuits, control electronics, communication equipment, water pumps and similar auxiliary loads directly from a 48V battery bank. The output voltage can be adjusted from its nominal 12V setting, which is useful when the converter is used to top-charge a 12V battery rather than simply power a fixed load. The unit does not require a remote on/off connection to operate, though the Orion-Tr range supports this feature where wiring it in is practical.
Weighing 1.3kg, the unit is straightforward to mount in a panel, enclosure or under a dashboard. It carries Victron's standard build quality and is backed by their global support network, making it a practical choice for installers who need a reliable, isolated voltage conversion solution without over-specifying the installation.
Technical Specifications
| Parameter | Value |
| SKU | ORI481224110 |
| Input Voltage (nominal) | 48V DC |
| Output Voltage (nominal) | 12V DC |
| Output Current (maximum) | 20A |
| Output Power (maximum) | 240W |
| Isolation | Galvanic (isolated) |
| Weight | 1.3 kg |
| GTIN | 8719076035282 |
Applications
- Powering 12V auxiliary loads (lighting, pumps, control systems) from a 48V off-grid battery bank.
- Marine installations requiring galvanic isolation to prevent corrosion and protect onboard electronics.
- Electric vehicle or converted vehicle builds with a 48V main bus and 12V accessory circuits.
- Telecom and industrial enclosures where isolated DC power rails are required for control equipment.
- Backup power systems combining a 48V battery system with legacy 12V loads or instrumentation.
What Is Included
- 1 x Victron Orion-Tr 48/12-20A (240W) Isolated DC-DC Converter
Installation Notes
This converter should be installed by a qualified electrician or experienced systems integrator familiar with DC power systems. Ensure correct fusing on both the input and output sides in accordance with the wire gauges used. On marine installations, follow NMEA or flag-state wiring standards as applicable. The 48V input side should be treated as a hazardous voltage in all installation planning. Verify that the output voltage adjustment, if used, is set before connecting sensitive loads.
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:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- 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.