Description
xVictron Orion-Tr 24/48-8.5A (400W) Isolated DC-DC Converter
The Victron Orion-Tr 24/48-8.5A is a galvanically isolated DC-DC converter that steps up a 24V DC input to a 48V DC output at up to 8.5A, delivering 400W of continuous power. It is designed for professional use in off-grid systems, marine and vehicle installations, and any application where two DC bus voltages must be bridged without an electrical connection between them.
Key Features
- Galvanic isolation between input and output, eliminating ground loop issues and allowing safe integration of separate DC systems.
- 24V input to 48V output conversion at 8.5A continuous output current, providing 400W of regulated DC power.
- Wide input voltage range typical of the Orion-Tr series, accommodating real-world battery voltage fluctuations without shutting down.
- Compact, enclosed metal housing suited to fixed installation in panels, enclosures and vehicle builds.
- Fully regulated output voltage, protecting connected 48V loads and battery banks from input-side voltage variation.
- Compatible with Victron system architectures, including installations monitored via VictronConnect where supported by associated equipment.
Product Overview
The Orion-Tr range uses a transformer-based isolated topology, which means the input and output circuits share no direct electrical path. This matters in practice when connecting two battery banks of different voltages, integrating a 48V inverter system with a 24V auxiliary supply, or working in marine environments where galvanic corrosion from ground loops is a genuine concern. The isolation barrier also provides a degree of protection against fault propagation between the two DC systems.
At 400W continuous, this converter is sized for meaningful loads: charging a 48V battery bank from a 24V source, powering 48V inverters or motor controllers from a 24V house bank, or supplying 48V DC distribution in a mixed-voltage system. The regulated output means the 48V side remains stable regardless of normal fluctuations on the 24V input, which is important when the input is a live battery under charge or discharge.
The Orion-Tr series is a well-established product line from Victron Energy, manufactured to consistent quality standards and widely used by professional installers across off-grid, marine, automotive and industrial applications. The isolated variants are the correct choice wherever electrical separation between input and output is a system requirement rather than an option.
Technical Specifications
| Parameter | Value |
| SKU | ORI244841110 |
| Input Voltage (nominal) | 24V DC |
| Output Voltage (nominal) | 48V DC |
| Output Current (maximum) | 8.5A |
| Output Power (continuous) | 400W |
| Isolation | Galvanic (transformer-based) |
| Weight | 1.52 kg |
| GTIN | 8719076038863 |
Applications
- Charging a 48V battery bank from a 24V alternator or battery source in vehicles, boats or off-grid systems.
- Supplying 48V inverters or motor controllers in mixed-voltage DC systems where a 24V primary bus is already established.
- Marine installations requiring galvanic isolation to prevent corrosion caused by ground loops between separate DC systems.
- Off-grid cabins and mobile setups where two independent battery banks at different voltages must be kept electrically separate.
- Industrial and telecoms enclosures requiring a stable, regulated 48V rail derived from a 24V supply.
What Is Included
- 1x Victron Orion-Tr 24/48-8.5A (400W) Isolated DC-DC Converter
Installation Notes
Installation should be carried out by a qualified electrician or experienced system integrator familiar with DC power systems. Ensure input wiring is correctly fused as close to the source battery as practicable, and that cable sizing is appropriate for the input current at 24V (which will be significantly higher than the 8.5A output current). The galvanic isolation means the output negative does not need to share a common ground with the input negative, but verify your system design before connecting. For marine installations, follow NMEA or flag-state wiring standards as applicable.
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.