Blue Sea Systems 5187 200A Blue Terminal Fuse, 58V DC, Requires Fuse Block 5191/2151

The Blue Sea Systems 5187 is a 200 amp terminal fuse built to protect large battery banks and heavy-gauge DC wiring circuits aboard a boat. Finished in blue for quick visual amperage identification, it is designed for use with Terminal Fuse Blocks (PN 5191 or PN 2151) and must not be mounted directly to a battery terminal. The fuse carries a 10,000 amp interrupt current (AIC) rating at 14 volts DC, which satisfies ABYC requirements for DC main circuit protection on large battery banks, and a maximum voltage rating of 58 volts DC.

A clear window on the housing gives a visible indication of a blown fuse, so troubleshooting a circuit does not require removal or testing. The fuse is ignition protected, making it safe for installation aboard gasoline powered boats, and it carries an IP66 rating, meaning it is protected against powerful water jets in an open marine environment. The housing is molded plastic and the fuse mounts through-hole into a compatible terminal fuse block. Measuring 4 x 3 x 1 inches and weighing 0.06 pounds, the 5187 is intended for DC main circuit protection where a compact, high-interrupt-rating fuse is required rather than a resettable breaker.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 5187
• Amperage: 200 Amps
• Color: Blue
• Maximum Voltage: 58 Volts DC
• Interrupt Rating: 10,000 Amps at 14 Volts DC
• Mounting Type: Through-Hole Mount
• Material: Plastic
• Dimensions: 4 x 3 x 1 inches
• Weight: 0.06 pounds
• Ignition Protected: Yes
• Water Resistance Rating: IP66
• Compatible Fuse Blocks: Terminal Fuse Block 5191 or 2151

Frequently Asked Questions

What amperage is the Blue Sea Systems 5187 terminal fuse? The 5187 is rated at 200 amps, identified by its blue housing color for quick visual sizing on a DC panel or battery bank.

Can the 5187 be mounted directly to a battery terminal? No. The 5187 requires the use of a Terminal Fuse Block, PN 5191 or PN 2151, and must not be mounted directly to the battery terminal.

What is the maximum voltage rating of this fuse? 58 volts DC is the maximum voltage rating for the Blue Sea Systems 5187 terminal fuse.

Is the 5187 safe for gasoline powered boats? Yes, the 5187 is ignition protected, meaning it is safe to install aboard gasoline powered boats.

How do I know if the 5187 fuse has blown? The fuse has a clear window that gives a visible indication of a blown condition, so it can be checked without removing it from the fuse block.

What interrupt current rating does the 5187 have? 10,000 amps at 14 volts DC is the interrupt current (AIC) rating of the Blue Sea Systems 5187, which satisfies ABYC requirements for DC main circuit protection on large battery banks.

What material is the 5187 terminal fuse housing made of? The housing of the Blue Sea Systems 5187 is plastic.

Is the Blue Sea Systems 5187 waterproof? It carries an IP66 rating, meaning it is protected against powerful water jets, making it suitable for open marine mounting locations.

What are the dimensions and weight of the 5187 fuse? The 5187 measures 4 x 3 x 1 inches and weighs 0.06 pounds.

What is the mounting style of the Blue Sea Systems 5187? The 5187 uses a through-hole mount and is designed to install into a compatible Terminal Fuse Block.

Why does the 5187 need a separate fuse block instead of mounting on the battery post? The 5187 terminal fuse is designed to be held in a Terminal Fuse Block (PN 5191 or 2151) rather than bolted directly to a battery terminal, which keeps the connection secure and protects the fuse housing.