Blue Sea Systems 5046 ST Blade Fuse Block – 8 Circuits, 100A, with Cover

Overview

The Blue Sea Systems 5046 ST Blade Fuse Block delivers eight fused outputs in a compact, surface‑mount package. Designed for marine, automotive, RV, and off‑road use, it helps you distribute power to accessories and electronics while keeping wiring tidy and accessible. It accepts standard ATO or ATC blade fuses, making it easy to source replacements and tailor protection to your setup. This combination of versatility and organization is built for environments where reliability matters.

Compact, efficient power management

With a total rating of 100 amps and per‑circuit protection up to 30 amps, this block handles mid‑range loads with ease. Its compact footprint and a single‑side terminal layout simplify installation in tight compartments, dashboards, or instrument panels, helping you maintain a clean, professional look.

• Eight fused circuits for organized protection of multiple devices
• Surface‑mount design reduces wiring clutter and simplifies routing
• One‑sided terminal array for cleaner wiring runs
• Supports up to 30A per circuit and 100A total

Durability you can rely on

Durability is built in with tin‑plated copper buses and robust fuse clips, delivering corrosion resistance and steady conductivity in harsh environments. The clear insulating cover guards terminals from accidental contact and debris while providing space for labeling, so you can identify circuits at a glance.

• Tin‑plated copper buses resist corrosion
• Durable fuse clips ensure reliable fuse retention
• Clear insulating cover protects terminals and supports labeling

Labeling, maintenance, and real‑world use

In practice, this fuse block excels in marine setups, RV installations, and automotive projects where reliable protection and tidy wiring matter. Real‑world scenarios include powering a nav/chart plotter, cabin lighting, a bilge pump, and other accessories from a single, organized module. Eight fused outputs help segment critical loads while keeping spare capacity for future upgrades. While improvements can be meaningful, this is not a guarantee of outcomes—consider it a practical option for better power management.

Guidance for installation

Use the included insulating cover for safety and labeling space. Plan circuit labeling ahead of time to streamline inspections and future maintenance. The design suits surface‑mount installations where space is at a premium, and the one‑sided terminal layout keeps wiring organized and accessible during service.