Victron Energy Orion-Tr 24/12-30A 360W Isolated DC-DC Converter

Heavy-duty 24V to 12V conversion serious output for serious 12V loads in any 24V system

The Victron Energy Orion-Tr 24/12-30A (ORI241240110) is a high-current isolated DC-DC converter built for installations that demand real 12V power from a 24V source. Delivering 30A continuous output with burst capacity to 45A and rated at 360W at 40°C, it's designed for the kind of sustained, high-draw applications that lightweight converters simply can't handle: heavy 12V accessory loads in 24V trucks and buses, 12V hotel loads in commercial vehicles, or secondary 12V battery charging in large off-grid and marine systems.

Part of Victron's globally trusted Orion-Tr isolated range, this unit brings full galvanic isolation between input, output, and case keeping your 12V circuits clean, quiet, and protected from whatever is happening on the 24V side. The adjustable output (10–15V) means it doubles as a precision 12V battery charger, letting you set the correct charge voltage for your secondary battery chemistry without a separate dedicated unit. Engineered to operate from −20°C to +55°C with thermal derating rather than hard shutdown, it's well suited to the demanding heat and corrugated-road conditions of Australian commercial, 4WD, and off-grid use.

Key Specifications

• Input voltage range: 20–35V DC
• Under voltage shutdown: 14V
• Under voltage restart: 15V
• Nominal output voltage: 12.2V (adjustable 10–15V)
• Continuous output current: 30A at 25°C
• Maximum output current (10s burst): 45A
• Short circuit output current: 60A
• Continuous output power at 40°C: 360W
• Continuous output power at 25°C: 430W
• Efficiency: 88%
• Galvanic isolation: 200V DC between input, output, and case
• Output voltage tolerance: ±0.2V
• Output noise: 2mV rms
• Off-load current draw: less than 100mA
• Operating temperature: −20°C to +55°C (derate 3% per °C above 40°C)
• IP43 protection rating (terminals oriented downwards)
• DC connection: Screw terminals, max cable cross-section 16mm²

Features & Benefits

• Remote on/off input: Route a simple low-power signal from a cabin switch, BMS, or engine run/stop output to control the converter without running heavy input wiring through a high-current switch. Cleaner installs, less voltage drop, and no oversized switch gear on the 24V input side.
• Adjustable output voltage (10–15V): Tune the output to the precise charge or supply voltage your 12V system needs. Set it to 14.4V for AGM absorption charging, 13.6V for float, or dial it to suit LiFePO4 making the Orion-Tr a flexible, all-chemistry 12V battery charger as well as a load supply.
• 30A continuous 45A burst: At 30A continuous and 45A for 10-second peaks, this is one of the highest-output single-unit isolated converters in the Orion-Tr range. It comfortably powers heavy 12V loads fridges, inverters, lighting, communications gear, winch control circuits without tripping into derating under normal conditions.
• Doubles as a 12V battery charger: In 24V trucks, buses, coaches, or commercial vehicles with a secondary 12V starter or accessory battery, the Orion-Tr replaces a standalone charger entirely. One unit handles both supply and charging duties, reducing system complexity and component count.
• 200V DC galvanic isolation: Complete electrical separation between the 24V input, 12V output, and chassis eliminates ground loops and conducted noise across the voltage boundary. Essential in vehicles and vessels where 12V and 24V circuits share physical proximity but must remain electrically independent.
• Unlimited parallel operation: Need more than 30A at 12V? Stack additional ORI241240110 units in parallel no current-sharing hardware required. Each unit adds its full 30A rated output to the bus, with no practical upper limit on the number of paralleled units.
• Short circuit proof output: Output faults won't destroy the unit. It recovers automatically once the short is cleared, minimising downtime in remote and commercial installations where replacement lead times matter.
• Thermal derating not hard cutoff: Above 40°C, output current reduces at 3% per degree rather than tripping offline. In a hot engine bay, a sun-baked trailer, or a sealed commercial vehicle body, that means the system keeps delivering usable power rather than going dark at the worst possible moment.
• IP43 rated enclosure: Dust and splash protection with terminals oriented downward. Suitable for under-bonnet, under-chassis, and enclosed cabinet installations in vehicles and marine applications where exposure to moisture and dust is part of daily operation.
• Screw terminals, 16mm² capacity: Heavy-gauge 16mm² cable support matches the wiring demands of a 30A+ installation. Standard screw terminals mean no crimping tools or proprietary connectors fast, solid connections that can be serviced in the field.
• Non-replaceable input fuse included: The 24V input model includes an internal non-replaceable input fuse for added circuit protection. Note: this fuse is not user-serviceable; if it fails, the unit requires replacement or warranty assessment.

Technical Specs

Compatible With

• 24V commercial vehicles (trucks, buses, coaches, plant equipment) with 12V accessory or starter battery loads
• 24V off-grid solar systems requiring a 12V secondary load or battery circuit
• 24V marine systems with 12V navigation, communications, or hotel loads
• 4WD and expedition vehicles with 24V primary systems and 12V accessory circuits
• Victron SmartSolar MPPT charge controllers operating on 24V systems
• Victron BMV battery monitors and Cerbo GX / Venus GX devices (system-level monitoring)
• Victron Lynx distribution busbars and fusing systems (for clean, fused 24V integration)
• Parallel arrays of additional ORI241240110 units (unlimited parallel operation supported)

Frequently Asked Questions

Can I use this to charge a 12V battery from my 24V truck or bus system?

Yes. The adjustable output (10–15V) lets you set an appropriate charge voltage for your 12V battery chemistry AGM, gel, or LiFePO4 making the Orion-Tr a fully functional isolated 12V battery charger in any 24V vehicle.

What is the maximum continuous output current this unit can deliver?

The ORI241240110 delivers 30A continuous at 25°C and up to 45A for 10-second bursts. At 40°C ambient, continuous output power is rated at 360W sufficient for heavy 12V accessory loads in commercial and 4WD applications.

Does galvanic isolation matter if both batteries share the same vehicle chassis?

Yes. Even with a shared chassis ground, galvanic isolation prevents ground loops, eliminates conducted noise between the 24V and 12V circuits, and protects sensitive 12V electronics from transients and interference generated on the 24V side.

How do I get more than 30A output at 12V from this unit?

Connect additional ORI241240110 units in parallel. Victron supports unlimited parallel operation with no current-sharing hardware each unit adds 30A to the output, so two units deliver 60A, three deliver 90A, and so on.

What happens if the internal input fuse opens?

The internal input fuse on 24V input models is non-replaceable. If it opens due to a fault condition, the unit will need to be assessed under warranty or replaced. Always install appropriate external overcurrent protection on the input wiring to reduce the risk of nuisance fuse events.