CrimpComponent folio · Charger · Redarc
BCDC1240D
40A in-vehicle DC-DC + MPPT, popular in 4×4/overland.
Open in Crimp →
Redarc BCDC1240D · 5 terminals
01 — Reference run
A sizing result with its assumptions attached.
Conductor6 AWG16 mm²
Fuse50 Apositive run
Voltage drop2.2%9.8 ft one way
Design current40 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 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.
02 — Catalog specification
The part the engine actually sees.
- Rated output
- 40 A
- Typical charge current
- 38 A
- PV open-circuit limit
- 32 V
- Canvas footprint
- 220 × 120 px
Terminal map
| Terminal | Polarity | Direction | Rating |
|---|---|---|---|
| ALT + | positive | input | 60 A |
| PV + | positive | input | 25 A |
| PV − | negative | input | 25 A |
| BATT + | positive | output | 40 A |
| BATT − | negative | output | 40 A |
03 — Supporting parts
What belongs around it.
- 19.7 ft total of 6 AWG (16 mm²) marine cable
- Four 6 AWG cable lugs matched to the equipment studs
- 50 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.