Blue Sea Systems 30A MAXI Fuse - Part Number 5138

The Blue Sea Systems 5138 is a 30 amp MAXI fuse designed to protect marine electrical circuits from overcurrent damage. Sold individually, this larger amperage blade-style fuse uses tin-plated connector blades that resist corrosion in the marine environment, helping maintain a reliable electrical connection over time. The fuse body provides visible indication of a blown condition, so a quick visual check tells you whether the fuse has tripped without needing to remove it or use a meter. Its through-hole mount design fits standard MAXI fuse holders and blocks used throughout boat wiring systems. Constructed of plastic in a beige housing, the 5138 measures 5 x 3 x 1 inches and is built for straightforward swap-in replacement when a circuit needs a 30 amp rating. This is an economical option for boat owners maintaining battery, bilge pump, windlass, or other higher-draw circuits that call for MAXI-style fuse protection rather than smaller blade fuses.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 5138
• Amperage Rating: 30 Amps
• Fuse Style: MAXI blade-style fuse
• Connector Blades: Tin-plated for corrosion resistance
• Blown Fuse Indication: Visible
• Mounting Type: Through-Hole Mount
• Material: Plastic
• Color: Beige
• Item Dimensions: 5 x 3 x 1 inches
• Weight: 0.04 pounds
• Retail Pack Quantity: 1

Frequently Asked Questions

What amperage is the Blue Sea Systems 5138 fuse rated for? The 5138 is rated for 30 amps, making it suitable for circuits that require a MAXI-style fuse at that amperage.

How do I know if the fuse has blown? The 5138 provides visible indication of a blown condition, so you can tell at a glance whether the fuse has tripped without removing it from the holder.

What style of fuse is this? It is a MAXI blade-style fuse, a larger-format blade fuse used for higher-amperage circuits than standard automotive blade fuses.

How is the 5138 mounted? This fuse uses a through-hole mount design, fitting standard MAXI fuse holders and fuse blocks built for that mounting style.

What material is the fuse body made of? The Blue Sea Systems 5138 has a plastic housing in a beige color.

What are the dimensions of this fuse? The 5138 measures 5 x 3 x 1 inches.

How much does the 5138 fuse weigh? It weighs 0.04 pounds.

Why are the connector blades tin-plated? Tin-plated connector blades on the 5138 resist corrosion, which helps maintain a reliable connection in the marine environment.

How many fuses come in a package? The 5138 is sold in a retail pack of 1, so each package contains a single 30 amp MAXI fuse.

Are other amperage ratings available in this same fuse line? Yes, Blue Sea Systems offers this same MAXI fuse style in other amperage ratings including 40A, 50A, 60A, 70A, and 80A versions for higher-draw circuits.

What circuits is a 30 amp MAXI fuse typically used for? A 30 amp MAXI fuse like the 5138 is commonly used for boat circuits requiring MAXI-style overcurrent protection, such as battery or accessory feeds rated at that amperage.