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, delivering up to 20A continuous (240W). It suits installations where the input and output circuits need to be electrically separated, such as running 12V equipment from a 48V battery bank or vehicle bus.

Key features of this victron dc dc converter

• Isolation, galvanic isolation between input and output, so the two circuits share no common ground.
• Conversion, 48V input to 12V output at up to 20A, up to 240W of regulated power.
• Adjustable output, output voltage can be tuned away from the nominal 12V setting for charging or load-matching purposes.
• Wide input tolerance, copes with normal fluctuations seen across 48V battery systems.
• Housing, enclosed unit suitable for fixed mounting in vehicles, vessels or off-grid enclosures.
• Weight, 1.3kg, straightforward to fit in a panel or under a dashboard.

Why isolation matters

A non-isolated converter shares a ground between input and output. On a vessel or vehicle with sensitive electronics, bonding requirements, or a 12V auxiliary system tied into a 48V main circuit, that shared ground can create ground loops and fault paths. The Orion-Tr's isolation barrier keeps the two sides electrically separate, letting each be referenced independently.

Applications

• Running 12V lighting, pumps or control systems from a 48V off-grid battery bank.
• Marine installations needing isolation to protect onboard electronics.
• Vehicle builds with a 48V main bus and separate 12V accessory circuits.
• Telecom or industrial enclosures requiring isolated DC power rails.

What's in the box

• 1 x Victron Orion-Tr 48/12-20A (240W) Isolated DC-DC Converter

Installation notes

Fit this converter with correct fusing on both input and output sides matched to your wire gauge. Treat the 48V input as a hazardous voltage throughout planning and installation, and set any output voltage adjustment before connecting sensitive loads. Marine installs should follow the relevant wiring standards for the vessel.