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Victron Buck-Boost 50A

Model Buck-Boost DC-DC 50A

Buck-boost DC-DC converter for Euro 6 smart-alternator vehicles. 50A output; programmable, supports B2B charging from 10–30V input.

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Victron Buck-Boost 50A
Victron Buck-Boost 50A · 4 terminals
01 — Wiring diagram

How the Buck-Boost 50 is wired

Victron Buck-Boost 50A wiring diagram WIRING DIAGRAM Victron Buck-Boost 50A wiring diagram 12 V battery bank Charged by this unit Buck-Boost 50 Victron · Buck-Boost DC-DC 50A 70 A 6 AWG (16 mm²) → OUT + 6 AWG (16 mm²) → OUT − 10 ft one way IN + IN − crimp.studio 50 A · 2.8% drop · ABYC E-11
Victron Buck-Boost 50A wiring diagram, 6 AWG (16 mm²) positive feed protected by a 70 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 Buck-Boost 50 need?

Conductor6 AWG16 mm²
Fuse70 Apositive run
Voltage drop2.8%10 ft one way
Design current50 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 Buck-Boost 50A specifications and terminal map

Rated output
50 A
Typical charge current
48 A

Terminal map

TerminalPolarityDirectionRating
IN +positiveinput90 A
IN −negativeinput90 A
OUT +positiveoutput50 A
OUT −negativeoutput50 A
04 — Supporting parts

What else you need to wire the Buck-Boost 50

  • 20 ft total of 6 AWG (16 mm²) marine cable
  • Four 6 AWG cable lugs matched to the equipment studs
  • 70 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 Buck-Boost 50 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 Buck-Boost 50

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