Blue Sea Systems 5015 ST Glass Fuse Block, 6-Circuit with Negative Bus, 30 Amp

The Blue Sea Systems 5015 is a 6-circuit ST (3AG) glass fuse block built for organizing and protecting multiple DC circuits from a single common negative bus. Each of the six positions accepts a standard ST glass fuse and uses screw terminals to secure incoming and outgoing wiring, with terminal screws that compress the fuse blades within the block for a low-resistance connection at every position. A common negative bus lets you land ground wires for all six circuits without running separate bus bars, simplifying panel wiring on boats with many small accessory circuits.

Safety and serviceability are built into the design. A snap-on terminal cover insulates all conductive parts of the block, satisfying ABYC and USCG requirements for exposed electrical connections aboard a vessel. The cover has breakouts on the sides and bottom so wiring can be routed in from whichever direction suits the installation. Integrated fuse ejector levers make it easy to pull a blown ST glass fuse without pinching fingers or damaging the block, and a label recess is molded into the block to accept a large-format label so each of the six circuits can be clearly identified. The block is rated for use on 24-hour circuits, making it suitable for always-on loads such as bilge pumps or memory-backed electronics in addition to switched accessory circuits. It is a straightforward, panel-mount solution for consolidating several fused DC circuits into one compact, code-compliant assembly.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 5015
• Product Name: ST Glass Fuse Block with Negative Bus
• Number of Circuits: 6
• Current Rating: 30 Amps
• Fuse Type: ST (3AG) Glass Fuse
• Connector Type: Screw Terminal
• Number of Poles: 6
• Number of Positions: 6
• Fuse Material: Glass
• Bus Configuration: Common Negative Bus
• Terminal Cover: Snap-on, insulates all conductive parts, ABYC/USCG compliant
• Duty Rating: Suitable for 24-hour circuits
• Weight: 0.58 pounds
• UPC: 632085050153

Frequently Asked Questions

How many circuits does the Blue Sea Systems 5015 fuse block support? The Blue Sea Systems 5015 is a 6-circuit ST glass fuse block, giving you six individually fused positions off a single common negative bus.

What type of fuse does the 5015 use? It uses standard ST (3AG) glass fuses, one per circuit position, held in place with screw terminals that compress the fuse blades for a low-resistance connection.

What is the current rating of this fuse block? The Blue Sea 5015 is rated for 30 Amps.

Does the 5015 have a negative bus built in? Yes, the 5015 includes a common negative bus so all six circuits can share a single ground connection point instead of requiring a separate bus bar.

Is the terminal cover on the 5015 required for ABYC or USCG compliance? Yes, the snap-on terminal cover insulates all conductive parts of the Blue Sea 5015 fuse block, which satisfies ABYC and USCG requirements for covering exposed electrical connections on a boat.

Which direction can wires be routed into the 5015 fuse block? The terminal cover on the Blue Sea 5015 has breakouts on the sides and the bottom, so wiring can enter from either direction depending on how the block is mounted.

Can the 5015 be used for circuits that run continuously? Yes, the Blue Sea 5015 is rated for use on 24-hour circuits, so it can be used for always-on loads such as bilge pumps in addition to switched accessory circuits.

How do you remove a blown fuse from the 5015? The Blue Sea 5015 has integrated fuse ejector levers at each position, allowing a blown fuse to be lifted out without pinching your fingers or prying at the block.

Can circuits be labeled on the 5015 fuse block? Yes, the 5015 has a molded label recess that accepts a large-format label so each of the six circuits can be identified.

How much does the Blue Sea 5015 fuse block weigh? The Blue Sea Systems 5015 fuse block weighs 0.58 pounds.

What connector type is used to wire the 5015? The 5015 uses screw terminals to secure both incoming power wiring and outgoing circuit wires at each of the six fuse positions.

What is the UPC for the Blue Sea 5015 fuse block? The UPC for the Blue Sea Systems 5015 ST glass fuse block is 632085050153.