Sierra FS84120 Marine Rated Battery Fuse, 50A, Red
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Fits onto the positive battery stud providing circuit protection directly from the power source.
- Ignition protected when used with Sierra MRBF Fuses
- Bolt-down design for high-vibration applications
- Standard Isolated M8 stud design allows the stacking of terminals
- Prevents accidental shorts with protective, insulating cap
- Perfect in tight spaces to provide high current protection
- Compact and designed for DC Main, Bow Thruster, Inverter, and windlass circuit protection
- 300A Maximum Amperage
- Meets ABYC requirements for DC main circuit protection on large battery banks with high-interrupt rating
- Easy fault indication with clear fuse display
- Color-coded Amperage Identifier
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 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.