What amperage options are available in this line?

This line covers 10A (5241), 15A (5242), and 20A (5243) ATO/ATC blade fuses, each sold as a 2-pack.

How do I pick the right amperage for my circuit?

Match the fuse amperage to the rating specified for the specific circuit and wire gauge you are protecting; check your panel labeling or wiring diagram, and never install a higher-amperage fuse than the circuit calls for.

How many fuses come in a pack?

Every option in this line ships as a 2-pack, so both fuses arrive together in a single purchase.

What type of fuse is this?

These are standard ATO/ATC blade-style fuses, the common automotive and marine format used in most fuse blocks and panels.

Will these fuses fit my existing fuse block or panel?

Yes, as long as the block or panel accepts standard ATO/ATC blade fuses, any amperage in this line will fit since they all share the same industry-standard blade footprint.

How can I tell if a fuse has blown without removing it?

Each fuse body has a visible indicator window that shows the blown condition, so a quick visual check often confirms the fault without pulling the fuse for a continuity test.

Are the connector blades corrosion resistant?

Yes, the blades are tin-plated for corrosion resistance, which matters in the salt-air and damp conditions typical of marine installations.

How is the amperage marked on the fuse?

The amperage rating is molded directly into the fuse body and color-coded per the ATO/ATC standard, so it stays legible even after years of service.

Blue Sea Systems ATO/ATC Fuses, 2-Pack - 10A-20A

Blue Sea Systems ATO/ATC Blade Fuses, 2-Pack - Available in 10A to 20A

$2.69

Blue Sea Systems ATO/ATC blade fuses are the industry-standard automotive and marine fuse format, built to protect DC circuits from overcurrent damage in fuse blocks, panels, and holders. Each fuse features a color-coded, molded-in amperage rating for fast identification, tin-plated blades for corrosion resistance in salt-air and damp marine environments, and a visible indicator window so you can spot a blown fuse without pulling it for a continuity check. Sold in convenient 2-packs, these fuses are essential spares to keep on board for any 12V or 24V circuit protected by a standard ATO/ATC blade fuse holder.

Specifications

Brand: Blue Sea Systems
Fuse Type: ATO/ATC blade fuse
Pack Quantity: 2
Material: Plastic
Mounting Type: Surface mount (blade insertion)
Item Dimensions: 4 x 3 x 1 inches
Weight: 0.03 pounds

Sizes & Options

This line is available in three amperage ratings: 10A (Part Number 5241), 15A (Part Number 5242), and 20A (Part Number 5243). Match the amperage to the rating specified for the circuit you are protecting -- never substitute a higher amperage fuse than the circuit and wiring are rated for, as this can allow excessive current flow and create a fire hazard. Each option ships as a 2-pack, so you always have a spare on hand.

Blue Sea Systems ATO/ATC Blade Fuses, 2-Pack - Available in 10A to 20A

Specifications

Sizes & Options

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