Heavy‑duty bus bar boxes for 12V‑48V DC power distribution, built for high‑current applications in vehicles, boats, RVs, and solar systems. Featuring 100A to 300A continuous ratings, multi‑way screw terminals, and durable IP‑rated enclosures, they deliver safe, low‑resistance power distribution while protecting connections from dust, moisture, and vibration. Designed for heavy‑duty use, these terminal boxes simplify wiring and organize power links for batteries, inverters, and accessories, ensuring stable, long‑lasting performance in demanding marine, automotive, and off‑grid environments.