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Celebrating over 50 years of Trusted Marine Service
Over 50 years of Trusted Marine Service

Blue Sea 5240 Fuse ATO/ATC 7.5 Amp 2/Pk

Original price $6.79 - Original price $6.79
Original price
$6.79
$6.79 - $6.79
Current price $6.79
Availability: Availability on request

Free returns on all eligible orders

You have 30 days to request a return. All sale items are final sale.

Blue Sea Systems ATO/ATC style fuse provides fast-acting circuit protection in a convenient 2-pack for marine and 12/24V DC electrical systems.

Key Features

  • Fast-acting (fuse) protection for ATO/ATC style fuse installations
  • ATO/ATC blade format designed for plug-in fuse holders that accept this style
  • Tin-plated connector blades help resist corrosion
  • Visible indication of a blown condition
  • Rated for 32 volts DC maximum
  • Interrupt capacity rated at 1000 amperes DC

Intended Use

  • Marine and RV DC accessory electrical circuits that use ATO/ATC style plug-in fuses
  • DC circuit protection for electronics and onboard systems requiring fast-acting fuse protection

Product Details

  • Brand/Series: Blue Sea Systems
  • Part: ATO/ATC Fuse
  • Rating: 7.5 Amp
  • Package quantity: 2 per pack
  • Connector blades: Tin-plated
  • Condition indication: Visible indication of blown condition
  • Maximum voltage: 32 volts DC
  • Interrupt capacity: 1000 Amperes DC
  • SKU/Item number: 661-5240

Parts Desk Insights

Best Use Case: Replace a failed ATO/ATC fuse with the same amperage rating (7.5A) to restore protected operation in the affected DC circuit while maintaining proper fuse protection.

Common Issues: If a replacement fuse blows again, inspect the connected wiring and the device/load it protects for shorts, overload conditions, or loose/corroded fuse-holder contacts. Also confirm the circuit uses ATO/ATC style fuses before installing.

Related Products & Accessories

  • Fuses - Browse the fuse collection for additional amperage ratings and fuse styles.
Shipping information

In-stock and OEM parts: ship same or next business day.

Locally warehoused items: ship within 1-3 business days.

Special-order items: timeline confirmed after order.

Returns & warranty

Returns & Satisfaction Guarantee

We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.

If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.

To qualify for a return:


  • Item must be in new, unused condition

  • Product must be in its original packaging

  • All parts, components, hardware, manuals, and accessories must be included

  • Packaging must be undamaged and suitable for resale

Important:

Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.

We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.

For return authorization, please contact our support team before shipping anything back.

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