The Victron Orion-Tr 12/48-8A is a galvanically isolated DC-DC converter that steps a 12V DC input up to a regulated 48V DC output, delivering up to 8A and 380W continuous. It suits mobile, marine and off-grid systems where two battery banks need to stay electrically separate.

Key features of this victron dc dc converter

• Isolation, galvanic, transformer-based, keeps input and output circuits electrically separate to prevent ground loops.
• Conversion, 12V input to 48V output at up to 8A continuous, rated at 380W.
• Adjustable output, voltage can be tuned to match the charge requirements of lead-acid, AGM, gel or lithium battery banks.
• Housing, compact metal enclosure weighing 1.8 kg.
• Parallel operation, additional Orion-Tr units can be wired in parallel to increase total output current.
• Ecosystem, compatible with Victron's wider monitoring setups, including VE.Smart Networking where the installation supports it.

Product overview

The Orion-Tr isolated series uses a transformer-based topology to provide true galvanic isolation between source and destination circuits. This matters in marine and vehicle installations, where chassis grounds or multiple battery banks can otherwise create unwanted current paths. The isolation also limits fault propagation between banks.

Stepping 12V up to 48V suits installations charging or powering a 48V service bank, traction system or telecom load from a 12V alternator or house battery. The adjustable output lets installers set the correct absorption or float voltage for the connected chemistry. At 380W and 8A, it covers moderate charging duties or direct 48V DC loads.

The unit mounts in any orientation and does not need forced cooling under normal conditions. Wiring multiple units in parallel on the output side raises available current beyond 8A without moving to a larger single converter.

Applications

• Charging a 48V lithium or lead-acid bank from a 12V vehicle or vessel alternator.
• Powering 48V DC telecom or data equipment from a 12V house battery off-grid.
• Marine dual-battery setups needing isolation against corrosion and ground loop issues.
• Motorhome and campervan conversions with mixed-voltage DC systems.
• Industrial or mobile setups feeding a 48V load from a 12V source with no shared ground reference.

What's in the box

• 1 x Victron Orion-Tr 12/48-8A (380W) Isolated DC-DC Converter

Installation notes

This converter carries significant DC current on its 12V input side, so cable sizing and fusing on both circuits matters. Fit and commission it through a qualified electrician or an experienced marine or vehicle systems installer familiar with DC power. Confirm the output voltage matches the connected battery chemistry before use, and follow relevant national or NMEA wiring standards on marine installations.