Blue Sea Systems 5056100 ST Blade Water-Resistant Fuse Block 80A

Description

Product Overview

The Blue Sea Systems 5056100 ST Blade Fuse Block is engineered for demanding marine and recreational vehicle (RV) applications where water resistance and reliable power distribution are essential. Rated for 80 amps at 32 volts DC, this compact block measures just 5.41 inches wide by 2 inches high, making it an ideal fit for tight panels and enclosures. Constructed from high‑impact plastic with tin‑plated copper bus bars, the unit combines durability with excellent conductivity. The screw‑mount design secures the block firmly to a panel, while the four screw‑type contacts provide a solid, low‑resistance connection for fast‑acting blade fuses or low‑profile circuit breakers. Included with the block are four write‑on circuit labels, simplifying identification and maintenance of each circuit.

Usage

Designed for marine environments, this fuse block excels in protecting critical systems such as navigation lights, bilge pumps, and communication equipment from over‑current conditions while resisting moisture ingress. The water‑resistant rating also makes it suitable for RV installations, where exposure to rain, humidity, and temperature fluctuations can challenge standard electrical components. Whether you are outfitting a new boat, upgrading an existing vessel, or installing a custom RV electrical panel, the 5056100 provides a clean, organized solution that reduces wiring clutter and enhances safety. Its compatibility with both ATO and ATC fast‑acting blade fuses, as well as low‑profile circuit breakers, offers flexibility for a range of load requirements.

Why Choose Us

Blue Sea Systems has a reputation for marine‑grade quality, and this fuse block is no exception. The tin‑plated copper buses are engineered to resist corrosion, ensuring long‑term electrical performance even in salty or humid conditions. The block meets Abyc/Uscg specifications and carries a limited lifetime warranty, reflecting confidence in its durability. Its modular design allows nesting with other ST‑Blade water‑resistant fuse blocks and 100 A busbars, enabling scalable system expansions without the need for additional wiring. The included label set and clear, screw‑type terminals make installation straightforward, reducing the time and tools required for a professional finish.

Key Features

• 80 amp water‑resistant rating protects critical marine and RV circuits from moisture and over‑current events.
• Four tin‑plated copper contacts provide reliable, low‑resistance connections for fast‑acting blade fuses.
• Screw‑mount design ensures a secure, vibration‑resistant installation in harsh environments.
• Compact size and modular nesting capability allow easy expansion of electrical panels.
• Limited lifetime warranty and dedicated customer support give peace of mind for long‑term use.

FAQ

What types of fuses are compatible with this block?

The 5056100 accepts both ATO and ATC fast‑acting blade fuses as well as low‑profile circuit breakers, giving you flexibility to match the protection needs of each circuit.

Can this fuse block be used in freshwater versus saltwater applications?

Yes. The tin‑plated copper bus bars and water‑resistant housing are designed to resist corrosion in both freshwater and saltwater environments, making it suitable for a wide range of marine applications.

How does the water‑resistant rating affect installation?

The block’s sealed design helps prevent moisture ingress, but it still requires proper sealing of the panel and use of the supplied screw‑type terminals to maintain its protective qualities.

Is the block compatible with existing wiring harnesses?

Its standard screw terminals accept typical marine‑grade wire gauges, and the included label set helps you integrate it smoothly into existing harnesses without extensive rewiring.

What warranty coverage does Blue Sea Systems provide?

The product comes with a limited lifetime warranty covering defects in materials and workmanship, backed by Blue Sea Systems’ responsive customer service team.