The Victron Orion-Tr 48/24-5A is a galvanically isolated DC-DC converter that steps a 48V DC input down to a 24V DC output at up to 5A, delivering 120W of regulated power. It suits battery systems, vehicles, vessels and off-grid installations where two DC buses at different voltages need to stay electrically separate.

Key features of this Victron DC-DC converter

• Galvanic isolation, input and output share no direct electrical connection, avoiding ground loop issues and protecting sensitive loads from input-side faults.
• Conversion, 48V input to 24V output at 5A continuous, up to 120W.
• Input range, wide input voltage tolerance to cope with real-world fluctuations across 48V lead-acid and lithium systems.
• Weight, 0.5kg, small enough for panel enclosures, vehicle cabinets and marine switchboards.
• Fixed output, a stable 24V supply to downstream loads without manual adjustment.

Product overview

Galvanic isolation is what sets the Orion-Tr range apart from non-isolated converters. A transformer-based topology keeps the input and output circuits electrically separate, which matters when the 48V source and the 24V load circuit use different earthing references, or when fault currents must be stopped from moving between two battery banks. Many marine and vehicle installations require this as standard.

This 48/24-5A model suits a 48V primary system feeding 24V auxiliary circuits: control electronics, communications equipment, lighting or instrumentation, all run from the 48V bank without bridging the two systems electrically. At 120W continuous, it covers a practical range of auxiliary loads without stepping up to a larger converter.

The unit is designed for permanent, fixed installation in a ventilated location. This variant has no remote on/off control or programmable output voltage, keeping it straightforward for fixed-voltage use.

Applications

• Powering 24V auxiliary loads from a 48V battery bank in off-grid systems.
• Marine installations needing isolated conversion between a 48V house bank and a 24V electronics bus.
• Electric or specialist vehicles with a 48V main system and 24V accessory circuits.
• Telecom and industrial enclosures feeding isolated 24V equipment from a 48V supply.
• Battery integration where two banks at different voltages must remain electrically isolated.

What's in the box

• 1x Victron Orion-Tr 48/24-5A (120W) Isolated DC-DC Converter

Installation notes

Fitting should be done by a qualified electrician or systems integrator familiar with DC power systems, with wiring correctly rated for the voltages and currents involved and the unit mounted somewhere ventilated. Marine installs should follow applicable NMEA and flag-state wiring standards; vehicle installs should observe relevant automotive electrical codes. This unit is not for grid-connected applications and does not require G98 or G99 assessment.