Blue Sea 5218 AGC® Glass Tube Fuse, 20A, 5/pk
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Blue Sea Systems 5218 AGC® glass tube fuse delivers fast-acting circuit protection with a visible indication of a blown condition. Sold as a 5-pack for servicing fuse blocks and AGC®/MDL®-type fuse holders.
Key Features
- Fast-acting protection for overcurrent circuits
- Corrosion resistant fuse design
- Visible indication of blown condition
- Glass tube fuse size: 1/4" x 1-1/4"
- Rated: 20A (AGC®)
- Pack quantity: 5
Intended Use
- Marine electrical systems that use AGC®/MDL®-type glass fuse holders or compatible fuse blocks
- Accessory replacement for existing fuse installations using the Blue Sea 5218 AGC® fuse type
Product Details
- • Brand: Blue Sea Systems
- • Fuse Type: AGC® Glass Tube Fuse
- • Amperage Rating: 20A
- • Pack Quantity: 5/pk
- • Size: 1/4" x 1-1/4"
- • Product SKU: 661-5218
Parts Desk Insights
Best Use Case: Use as replacement fuses for AGC®-type glass fuse setups where fast-acting overcurrent protection and an easy-to-check blown indicator are important.
Common Issues: If a fuse blows repeatedly, confirm the load wiring and component condition before reinstalling additional fuses. Also verify the fuse size and fuse-holder type match the intended AGC® glass fuse format (1/4" x 1-1/4").
Related Products & Accessories
- Browse fuse holders & fuse blocks - Pairing the correct fuse holder/fuse block is key for a secure, proper fit.
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.