CrimpVictron Orion-Tr 48/12-30
Isolated 48→12 V step-down DC-DC converter, 30 A output. The canonical converter on a 48 V hybrid sailboat / ePropulsion install: feed it from the 48 V bank's positive bus, run the output to a 12 V buffer battery or directly to the house bus. Galvanic isolation between input and output, so the 48 V negative does not have to be bonded to the 12 V negative.
Open in Crimp →A sizing result with its assumptions attached.
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 9.8 ft one-way run is a stated reference, not a universal installation prescription.
The part the engine actually sees.
- Rated output
- 30 A
- Typical charge current
- 28 A
Terminal map
| Terminal | Polarity | Direction | Rating |
|---|---|---|---|
| IN + | positive | input | 12 A |
| IN − | negative | input | 12 A |
| OUT + | positive | output | 30 A |
| OUT − | negative | output | 30 A |
What belongs around it.
- 19.7 ft total of 8 AWG (10 mm²) marine cable
- Four 8 AWG cable lugs matched to the equipment studs
- 40 A fuse and holder on the positive run
- Heat-shrink, strain relief, and terminal boots sized to the cable
See what it changes in your system
With JavaScript enabled, describe your existing boat, van, or off-grid system here. The model supplies topology; Crimp's engine computes the attachment, resized runs, checks, and supporting basket.
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 →