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Victron Orion-Tr 48/24-12

Model Orion-Tr 48/24-12 (280W)

Isolated 48→24 V step-down DC-DC converter, 12 A output (280W). Common on hybrid sailboats that run a 48 V propulsion bank AND a 24 V house / autopilot / electronics bus (Raymarine high-power radar, Lewmar 24 V windlasses). Output goes to a 24 V battery or directly to the 24 V bus.

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Victron Orion-Tr 48/24-12 · 4 terminals
01 — Wiring diagram

How the Orion 48/24-12 is wired

Victron Orion-Tr 48/24-12 wiring diagram WIRING DIAGRAM Victron Orion-Tr 48/24-12 wiring diagram 12 V battery bank Charged by this unit Orion 48/24-12 Victron · Orion-Tr 48/24-12 (… 15 A 11 AWG (4 mm²) → OUT + 11 AWG (4 mm²) → OUT − 10 ft one way IN + IN − crimp.studio 12 A · 2.7% drop · ABYC E-11
Victron Orion-Tr 48/24-12 wiring diagram, 11 AWG (4 mm²) positive feed protected by a 15 A fuse and a matching negative return between the 12 V battery bank and the unit, plus IN +, IN −.

The run drawn here is the 10 ft reference run sized below. Sized against ABYC E-11 — the US reference, and what Transport Canada accepts as an alternative to TP 1332 for pleasure craft under 24 m. Confirm your own run length, routing and terminations before ordering — open this part in the designer to size it against your actual system.

02 — Reference run

What size cable and fuse does the Orion 48/24-12 need?

Conductor11 AWG4 mm²
Fuse15 Apositive run
Voltage drop2.7%10 ft one way
Design current12 A12 V system

Sized against ABYC E-11 — the US reference, and what Transport Canada accepts as an alternative to TP 1332 for pleasure craft under 24 m. The design current is the unit's rated output. The Crimp engine applies its ordinary continuous-load headroom, voltage-drop budget, terminal clamp, and standard fuse ladder. The 10 ft one-way run is a stated reference, not a universal installation prescription.

03 — Catalog specification

Victron Orion-Tr 48/24-12 specifications and terminal map

Rated output
12 A
Typical charge current
11 A

Terminal map

TerminalPolarityDirectionRating
IN +positiveinput8 A
IN −negativeinput8 A
OUT +positiveoutput12 A
OUT −negativeoutput12 A
04 — Supporting parts

What else you need to wire the Orion 48/24-12

  • 20 ft total of 11 AWG (4 mm²) marine cable
  • Four 11 AWG cable lugs matched to the equipment studs
  • 15 A fuse and holder on the positive run
  • Heat-shrink, strain relief, and terminal boots sized to the cable

Start from this part

Open the canvas with the Orion 48/24-12 already placed, then wire the rest of the system around it. Nothing to install and no sign-up — the project is saved in this browser, and you can download the file whenever you want it.

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05 — Method & provenance

What is known, assumed, and computed.

Catalog profile

The manufacturer, model, ratings and terminal map are maintained as planning data in Crimp's component catalog. Confirm the current manufacturer manual, exact revision and installed nameplate before ordering or wiring.

Engine reference

Sized against ABYC E-11 — the US reference, and what Transport Canada accepts as an alternative to TP 1332 for pleasure craft under 24 m. The published conductor, fuse and voltage-drop result uses the visible reference length and current basis; it is not a universal installation prescription.

Read the complete methodology →
06 — Related components

Alternatives to the Orion 48/24-12

Browse all charger profiles →