Blue Sea Systems ATO/ATC Fuse, 32V DC, 1000A Interrupt Capacity, 2pk

Overview

The Blue Sea Systems ATO/ATC Fuse is a fast-acting blade fuse for DC circuit protection in marine electrical panels, fuse blocks, and accessory circuits that use the common ATO/ATC format. It is available across a 1A to 40A amperage range, with a maximum voltage rating of 32V DC and a 1000A interrupt capacity.

This fuse is a practical replacement or spare for protecting electronics and other small DC loads on board. The tin-plated connector blades help resist corrosion at the contact points, which matters in damp lockers, consoles, cabins, and other areas where marine wiring sees humidity and vibration.

Key features

• Fast-acting ATO/ATC blade fuse for protecting electronics and DC branch circuits.
• Available in amperage ratings from 1A to 40A for matching the fuse to the protected circuit.
• Rated for up to 32V DC, making it suitable for common 12V and 24V boat electrical systems.
• 1000A interrupt capacity for handling fault current within its rated limits.
• Tin-plated connector blades help reduce corrosion at the fuse holder contacts.
• Visible blown-fuse indication makes troubleshooting faster at the panel or fuse block.
• Fits ATO/ATC fuse holders and Blue Sea Systems blade-fuse panels that use this fuse format.

Variants

This fuse range varies by amperage only. The available ratings cover 1A, 2A, 3A, 4A, 5A, 7.5A, 10A, 15A, 20A, 25A, 30A, and 40A circuits, so the correct version should match the circuit protection value specified for the connected equipment and wire size.

The ATO/ATC blade format, 32V DC maximum voltage rating, tin-plated connector blades, and 1000A interrupt capacity remain consistent across the range. The amperage rating is the key selection point when replacing a blown fuse or stocking spares for a boat electrical panel.

Compatibility and fit

Use this fuse only in holders, panels, or fuse blocks made for ATO/ATC blade fuses. Before installation, confirm the required amperage on the equipment label, wiring diagram, fuse block cover, or service documentation. Replacing a fuse with a higher rating than specified can leave wiring or equipment without proper protection.

Use on board

These fuses are well suited for organized spare-fuse kits, helm panels, electronics circuits, cabin accessories, and other DC loads where the ATO/ATC size is already in use. They are a good match for boat owners, installers, and refit projects that need consistent blade-style circuit protection across multiple amperage values.

What’s included

• Two ATO/ATC blade fuses in the selected amperage