Blue Sea Systems 5026 ST Blade Fuse Block, 12 Circuit with Negative Bus and Cover, 100 Amp

The Blue Sea Systems 5026 is a 12-circuit ST Blade fuse block built for organized, code-compliant DC circuit protection aboard boats and other 12/24-volt DC systems. Each of the twelve branch circuits accepts a standard ATO or ATC blade fuse rated from 1 to 30 amps, with the block supporting up to 30 amps per circuit and 100 amps of total capacity. An integrated negative bus lets every ground wire terminate at a single point, cutting down on wiring clutter and making troubleshooting easier at the panel.

Current-carrying buses and fuse clips are made of tinned copper for long-term corrosion resistance in marine and mobile environments, and the block is IP66-protected against powerful water jets. A clear, snap-on cover with a push-button latch shields the terminals from accidental shorts, and it doubles as storage for spare fuses with recessed areas for writing on circuit labels. The 5026 accepts ring or snap fork terminals for flexible wire installation and mounts with screws. It meets ISO 8846 and SAE J1171 (when jumped) standards for marine electrical equipment.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 5026
• Number of Circuits: 12
• Fuse Type: ATO or ATC blade fuse
• Fuse Amperage Range: 1 to 30 amps
• Circuit Amperage Rating: 30 amps per circuit
• Total Capacity: 100 amps
• Voltage Rating: 32V DC
• Number of Poles: 24
• Water Resistance: IP66-protected against powerful water jets
• Certifications: ISO 8846, SAE J1171 (when jumped)
• Material: Tinned copper buses and fuse clips
• Mounting Type: Screw mount
• Terminal Type: Accepts ring or snap fork terminals
• Dimensions: 3.31 inches (W) x 1.5 inches (H)
• Weight: 0.75 pounds
• Included Components: Fuse block, cover, 20 write-on circuit labels
• UPC: 632085050269
• GTIN: 00632085050269

Fitment

Universal 12/24-volt DC fuse block, not tied to a specific make, model, or engine.

Replaces (OEM)

No OEM cross-reference numbers apply to this part.

Frequently Asked Questions

How many circuits does the Blue Sea Systems 5026 fuse block have? The 5026 provides 12 individual branch circuits, each protected by its own ATO or ATC blade fuse, plus an integrated negative bus for grounding all 12 circuits at one point.

What size fuses does the 5026 use? It accepts standard ATO or ATC blade fuses rated from 1 to 30 amps, with each circuit supporting up to 30 amps and the block handling 100 amps total capacity.

Is the negative bus built into the fuse block? Yes, the Blue Sea 5026 has an integrated negative bus bar so every ground wire terminates at the block itself rather than a separate bus, simplifying wiring.

Does the 5026 come with a cover? Yes, this version of the 5026 includes a clear snap-on cover with a push-button latch that protects the terminals and stores spare fuses, along with recessed areas for writing circuit labels.

What are the buses and fuse clips made of? The Blue Sea 5026 uses tinned copper buses and fuse clips, which resist corrosion in marine and other harsh mobile-electrical environments.

Is the 5026 waterproof? It is IP66-protected against powerful water jets, meaning it resists jets of water directed at it, though it should still be mounted in a location protected from direct water spray in normal use.

What is the maximum voltage rating for the 5026? The Blue Sea Systems 5026 is rated for 32V DC, making it suitable for both 12-volt and 24-volt DC electrical systems.

What size are the 5026's dimensions? The fuse block measures 3.31 inches wide by 1.5 inches high.

How much does the 5026 fuse block weigh? The Blue Sea Systems 5026 weighs 0.75 pounds.

What terminal types can I use with the 5026? The 5026 accepts ring or snap fork terminals, giving flexibility in how wires are connected to each circuit and the negative bus.

What certifications does the 5026 meet? It meets ISO 8846 and SAE J1171 (when jumped), standards used for marine electrical equipment.

What is included with the Blue Sea 5026? This 5026 fuse block ships with the fuse block itself, a clear protective cover, and 20 write-on circuit labels for identifying each circuit.