Blue Sea 12 Circuit Blade Fuse Block with Negative Bus & Cover

The Blue Sea Systems ST Blade Fuse Block – 12 Circuits with Negative Bus & Cover is a premium marine-grade DC fuse distribution panel designed to provide safe, organised, and reliable electrical protection for boats, yachts, caravans, RVs, and off-grid power systems. Featuring 12 individually fused circuits, an integrated negative bus, and a durable snap-on insulating cover, this fuse block simplifies wiring while delivering professional-grade circuit protection for 12V and 24V DC installations.

Engineered for harsh marine environments, the fuse block uses tin-plated copper buses and fuse clips for maximum conductivity and corrosion resistance. It accepts standard ATO®/ATC® blade fuses, making replacements simple and readily available throughout New Zealand. Each circuit can be clearly labelled for easy identification, while the transparent cover protects against accidental short circuits and helps keep moisture and debris away from electrical connections.

Rated for 100 amps total capacity and 30 amps per individual circuit, the ST Blade Fuse Block is ideal for distributing power to navigation lights, bilge pumps, electronics, VHF radios, chartplotters, lighting, refrigerators, USB outlets, and other onboard accessories. Its integrated negative bus eliminates the need for a separate grounding bus, reducing wiring clutter and making installation quicker and more professional.

Whether you're rewiring an existing boat or building a new electrical system, the Blue Sea Systems 12 Circuit Fuse Block delivers the reliability and safety trusted by marine professionals worldwide.

Key Features

• Genuine Blue Sea Systems ST Blade Fuse Block
• 12 individually fused circuits
• Integrated negative bus
• Accepts ATO® and ATC® blade fuses
• Snap-on transparent insulating cover
• Rated to 100A total capacity
• 30A maximum per circuit
• Tin-plated copper bus bars
• Corrosion-resistant marine construction
• Label recesses for circuit identification
• ABYC and USCG compliant insulation design
• Ideal for 12V and 24V DC systems

The protective cover incorporates storage for spare fuses and helps satisfy ABYC and USCG insulation requirements for marine electrical installations.

Why Buy from Barton Marine NZ?

At Barton Marine NZ, we supply genuine Blue Sea Systems electrical components trusted by New Zealand boat owners, marine electricians, and boat builders. The ST Blade Fuse Block is one of the industry's leading DC distribution panels, providing reliable circuit protection and tidy wiring for vessels of all sizes.

Perfect for:

• Trailer boats
• Launches
• Sailing yachts
• Fishing boats
• Catamarans
• Motorhomes
• Caravans
• Off-grid solar systems
• Marine electronics installations
• Electrical system upgrades

Technical Specifications

Published specifications include 12 circuits, 100A total capacity, 30A per circuit, 32V DC maximum voltage, and an integrated negative bus with corrosion-resistant tin-plated copper construction.

Common Applications

The Blue Sea 12 Circuit Fuse Block is ideal for:

• Marine electrical distribution
• Navigation lights
• Bilge pumps
• VHF radios
• Chartplotters
• Fish finders
• Cabin lighting
• Refrigeration systems
• USB charging circuits
• Auxiliary accessories

Performance Benefits

The Blue Sea Systems ST Blade Fuse Block provides:

• Safe, organised electrical distribution
• Professional-quality wiring layout
• Reduced wiring complexity
• Reliable circuit protection
• Excellent corrosion resistance
• Easy fuse replacement
• Faster fault diagnosis
• Long service life in marine environments

Its integrated negative bus significantly simplify installation while reducing wiring clutter, making future maintenance and troubleshooting much easier.

Note: Black circuit label stickers as per image are not supplied with the box