Description
xVictron Orion-Tr 48/48-2.5A (120W) Isolated DC-DC Converter
The Victron Orion-Tr 48/48-2.5A is a galvanically isolated DC-DC converter designed to step between 48V sources and 48V loads where electrical isolation between circuits is required. At 120W continuous output, it suits professional installations where ground loop elimination, noise reduction, or circuit separation is a priority.
Key Features
- Galvanic isolation between input and output, eliminating ground loops and preventing interference between circuits.
- 48V input to 48V output configuration, suitable for same-voltage systems requiring electrical separation.
- 120W continuous output power at 2.5A output current.
- Wide input voltage range typical of the Orion-Tr series, accommodating real-world battery voltage fluctuations.
- Compact and lightweight at 0.5kg, suitable for installation in confined spaces or enclosures.
- Fixed output voltage with no need for external regulation in standard applications.
- Designed for use in 48V telecom, off-grid, marine and vehicle systems where circuit isolation is a wiring or safety requirement.
Product Overview
Galvanic isolation in a DC-DC converter means the input and output circuits share no direct electrical connection. This matters in practice when two 48V systems share a common chassis or negative rail but must remain electrically independent, for example when connecting a 48V house battery bank to a 48V auxiliary load that must not share a ground reference with the main system. Without isolation, ground loops can introduce noise, cause measurement errors, or create fault paths that are difficult to diagnose.
The Orion-Tr range uses a high-frequency transformer internally to achieve this isolation while maintaining a stable output voltage. The 48/48-2.5A variant is the appropriate choice when the source and load voltages are nominally identical but the circuits must remain separated. It is not a voltage regulator in the traditional sense; it is a power transfer device with isolation as its primary function. At 120W, it covers a range of auxiliary loads including control systems, communications equipment, and instrumentation.
The unit is built to Victron's standard for DC conversion products, with protection against short circuit, over-temperature and reverse polarity on the input. It integrates straightforwardly into existing 48V architectures without requiring additional filtering or conditioning in most applications.
Specifications
- SKU: ORI484810110
- Input voltage: 48V nominal
- Output voltage: 48V nominal
- Output current: 2.5A
- Output power: 120W continuous
- Isolation: Galvanic (transformer-isolated)
- Weight: 0.5kg
- GTIN: 8719076016786
Applications
- Isolating 48V auxiliary circuits from a main 48V battery bank in off-grid systems.
- Powering 48V communications or control equipment from a 48V traction or house battery where ground separation is required.
- Marine installations where galvanic isolation is required to prevent corrosion caused by stray currents.
- Telecom and industrial enclosures requiring electrically separated 48V supply rails.
- Vehicle conversions and electric vehicle auxiliary systems with 48V architectures.
What Is Included
- 1x Victron Orion-Tr 48/48-2.5A (120W) Isolated DC-DC Converter
Installation Notes
Installation should be carried out by a qualified electrician or systems integrator familiar with DC power systems. Ensure correct fusing on both the input and output sides in accordance with the wire gauge used. In marine applications, follow NMEA or flag-state wiring standards for isolated circuits. Verify that the input voltage range of the unit is compatible with the actual operating voltage of your battery system, including charge voltages at the top of the charge cycle. Do not exceed the rated output current of 2.5A continuously.
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.