DC to DC Converters

DC-DC Converter vs. DC-DC Charger: The Key Difference

A DC-DC converter steps voltage up or down to power DC loads at a stable, regulated output voltage. A DC-DC charger, by contrast, is designed specifically to charge a secondary battery using a multi-stage charging algorithm. The Victron Orion-Tr converter delivers consistent DC output, not a charge profile, making it the correct choice when your DC load operates at a different voltage than your source system. Use a converter to run a 12V refrigerator from a 24V battery bank, or to power 12V accessories in a 48V off-grid cabin. Use a charger when the goal is replenishing a battery.

Victron Energy Orion-Tr Series

Buy the Victron Orion-Tr DC-DC converter for reliable voltage step-down or step-up across mixed-voltage systems in marine, RV, van, and off-grid cabin installations. Available in isolated and non-isolated models across 28 configurations. The remote on/off input eliminates the need for a high-current switch in the input wiring and can be operated with a low-power switch or an engine run/stop signal. All models are short-circuit-proof. Connect multiple units in parallel to scale output current for higher-demand loads.

Isolated vs. Non-Isolated DC-DC Converters

Select an isolated Orion-Tr when the input and output circuits require separate chassis grounds, standard in marine environments, mixed-voltage solar systems, and installations where galvanic isolation is needed to prevent ground loops or electrical noise from affecting sensitive electronics. The isolated models also feature adjustable output voltage, which allows them to function as a battery charger for a 12V accessory battery in a 24V or 48V system. Choose a non-isolated model when both sides share a common negative ground and cost-efficiency at equivalent amperage is the priority.

Voltage Configuration Guide

Input / Output

Typical Application

12V / 12V

Power 12V accessories from a 12V source with isolation

12V / 24V

Step up for 24V loads in a 12V vehicle system

12V / 48V

Feed 48V equipment from a 12V bank

24V / 12V

Power 12V loads, fridges, lights, from a 24V RV or bus system

48V / 12V

Step down from 48V off-grid or solar system to 12V DC loads

48V / 24V

Power 24V equipment in a 48V cabin or industrial installation

Key Attributes to Compare

• Input/output voltage combination, match to your source bank and load requirements
• Output amperage (5A to 30A continuous), size to peak load demand, not average
• Isolation type, isolated for marine, multi-ground, and sensitive electronics; non-isolated for single-ground vehicle systems
• Output adjustability, isolated models support adjustable output voltage for accessory battery charging
• Parallel capability, unlimited Orion-Tr units can be connected in parallel to increase total output
• IP43 rating, install with screw terminals oriented downwards for moisture protection

FAQs

What's The Difference Between A DC-DC Converter And A DC-DC Charger? 

A DC-DC converter steps voltage up or down to power DC loads at a stable, regulated output voltage. A DC-DC charger is built specifically to charge a secondary battery using a multi-stage charging algorithm. Use a converter to run equipment at a different voltage than your source system, and a charger when the goal is replenishing a battery.

Can I Use A DC-DC Converter To Run A 12V Fridge From A 24V Or 48V System? 

Yes. The Orion-Tr converter is designed exactly for this, delivering consistent regulated DC output so you can power 12V loads such as fridges, lighting, and accessories from a higher-voltage source bank.

Should I Choose An Isolated Or Non-Isolated Dc-Dc Converter? 

Choose isolated when your input and output circuits need separate chassis grounds, standard in marine environments, mixed-voltage solar systems, or anywhere galvanic isolation prevents ground loops or electrical noise. Choose non-isolated when both sides share a common negative ground and cost-efficiency at equivalent amperage is the priority.

Can A Dc-Dc Converter Charge A Battery, Not Just Power A Load? 

Isolated Orion-Tr models support adjustable output voltage, which allows them to function as a charger for a 12V accessory battery in a 24V or 48V system. Non-isolated models are intended for powering DC Loads rather than battery charging.

What Output Amperage Do I Need? 

Orion-Tr converters range from 5A to 30A continuous output. Size your selection to your peak load demand, not your average draw, since momentary spikes from equipment like compressors or pumps require headroom above typical running current.

Can I Connect Multiple Converters Together For More Power? 

Yes. Orion-Tr units can be connected in parallel without limit, allowing you to scale total output current for higher-demand loads beyond what a single unit provides.

Are These Converters Safe To Install Without A High-Current Switch? 

Yes. Every Orion-Tr model includes a remote on/off input, which removes the need for a high-current switch in the input wiring. You can operate it instead with a low-power switch or an engine run/stop signal, and all models are short-circuit-proof.

What IP Rating Do These Converters Have, And How Should I Install Them? 

Orion-Tr converters carry an IP43 rating for moisture resistance. For proper protection, install the unit with its screw terminals oriented downward.