Victron Energy Orion-Tr 24/12-15 180W Non-Isolated DC-DC Converter
Ultra-efficient 24V to 12V conversion more power delivered, less wasted as heat
The Victron Energy Orion-Tr 24/12-15 (ORI241215200R) is a compact, high-efficiency non-isolated DC-DC converter that steps a 24V input down to a fixed 12.5V output at up to 15A continuous. Where the isolated Orion-Tr models prioritise galvanic separation, this unit is engineered for maximum efficiency using synchronous rectification to achieve up to 97% full-load efficiency, meaning less energy lost as heat, a cooler-running installation, and more usable power delivered to your 12V loads.
Rated at 180W continuous, it's well suited to 24V systems that need a clean, reliable 12V supply for accessories, control circuits, lighting, and low-to-mid draw loads without the added cost or complexity of full galvanic isolation. Typical applications include 24V vehicles and plant with shared-ground 12V accessory circuits, 24V solar and off-grid systems powering 12V loads from a common negative, and any installation where efficiency and compact footprint matter more than electrical isolation. With IP43 protection, screw terminals, and a wide −20°C to +55°C operating range, it handles Australian workshop, vehicle, and outdoor conditions without fuss.
Key Specifications
- Input voltage range: 18–35V DC
- Output voltage: 12.5V (fixed)
- Continuous output current: 15A
- Maximum output current: 20A
- Continuous output power: 180W
- Efficiency: up to 97%
- Galvanic isolation: None
- Off-load current draw: less than 35mA
- 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 6mm² (AWG12)
Features & Benefits
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97% full-load efficiency via synchronous rectification: Industry-leading efficiency means the Orion-Tr 24/12-15 wastes less than 3% of input power as heat at full load. For a continuously running 12V accessory circuit, that translates to less thermal stress on the unit, a cooler install environment, and meaningfully lower energy losses over time particularly valuable in solar and off-grid systems where every watt counts.
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15A continuous 20A peak: Handles sustained 12V loads up to 180W with headroom to 20A for short-duration inrush events. Suitable for 12V lighting systems, control electronics, communications gear, small inverters, and accessory loads in 24V vehicles and plant.
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Fixed 12.5V output stable and predictable: A regulated 12.5V output keeps sensitive 12V electronics within their operating voltage range regardless of fluctuations on the 24V input side. No adjustment required connect and run.
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Compact and lightweight: The non-isolated design and synchronous rectification topology allow a smaller, lighter form factor than equivalent isolated converters. Easier to mount in tight spaces under the dash, in a battery box, or in a compact off-grid cabinet.
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IP43 rated enclosure: Dust and splash protection when installed with terminals downward. Suitable for under-bonnet, enclosed cabinet, and light outdoor installations where occasional moisture exposure is likely.
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Wide input voltage range (18–35V): Operates cleanly across the full range of a 24V system under varying charge and load conditions from a partially discharged 24V lead-acid bank at 18V up to a charging system at 35V without dropout or overvoltage shutdown.
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Screw terminals 6mm² capacity: Standard screw terminals accept up to 6mm² (AWG12) cable. No special tools required fast to install, easy to service, and appropriate for the current levels involved.
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Low off-load draw (<35mA): Minimal standby current draw keeps parasitic losses negligible in always-on installations such as caravans, boats on shore power, and fixed off-grid systems.
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Thermal derating not hard shutdown: Output current reduces gradually above 40°C rather than cutting off abruptly. In hot Australian environments the unit continues to deliver usable power at a reduced rate rather than faulting out entirely.
Technical Specs
| Specification |
Detail |
| SKU |
ORI241215200R |
| Brand |
Victron Energy |
| Model |
Orion-Tr 24/12-15 |
| Input Voltage Range |
18–35V DC |
| Output Voltage |
12.5V (fixed) |
| Continuous Output Current |
15A |
| Maximum Output Current |
20A |
| Continuous Output Power |
180W |
| Efficiency |
Up to 97% |
| Galvanic Isolation |
None |
| Off-Load Current Draw |
<35mA |
| Operating Temperature Range |
−20°C to +55°C |
| Thermal Derating |
3% per °C above 40°C |
| DC Connection |
Screw terminals |
| Maximum Cable Cross-Section |
6mm² / AWG12 |
| IP Rating |
IP43 (terminals down) |
| Remote On/Off |
Not available on this model |
| Adjustable Output |
Not available on this model |
Compatible With
- 24V vehicles (trucks, buses, plant) with shared-ground 12V accessory circuits
- 24V solar and off-grid systems with common-negative 12V load circuits
- 24V caravans and motorhomes with 12V appliance loads on a shared ground
- 24V marine installations where galvanic isolation is not required
- 12V lighting systems, control electronics, and communications gear in 24V vehicles
- Victron SmartSolar MPPT charge controllers operating on 24V systems
- Victron BMV battery monitors for system-level monitoring
Frequently Asked Questions
What is the difference between this model and the isolated Orion-Tr converters?
This unit (ORI241215200R) does not provide galvanic isolation between input and output both circuits share a common ground. The isolated Orion-Tr models provide 200V DC separation between input, output, and case, making them suitable for applications where ground loop prevention or electrical independence between circuits is required.
Why is the efficiency on this model higher than the isolated Orion-Tr range?
The non-isolated design uses synchronous rectification, which eliminates the transformer losses inherent in isolated topologies. This allows efficiency up to 97% at full load significantly higher than the 87–89% typical of the isolated Orion-Tr models in the same range.
Can I adjust the output voltage on this unit?
No. The ORI241215200R has a fixed 12.5V output and does not include an adjustable output voltage feature. If a variable or battery-chemistry-specific charge voltage is needed, refer to the Victron Orion-Tr isolated range with adjustable output.
Does this unit include a remote on/off input?
No. This model does not include a remote on/off feature. It operates whenever input voltage is present within the 18–35V operating range. If remote switching is required, an external relay or switch on the input wiring will be needed, or consider the isolated Orion-Tr models which include remote on/off as standard.
Is this unit suitable for a marine installation?
It depends on the installation. This unit provides no galvanic isolation, which means it is not suitable for most marine applications where ground loop prevention between the 24V and 12V circuits is required. For marine use, the Victron Orion-Tr isolated range is recommended.
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