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

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.

Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.