Blue Sea Systems 5177 Battery Terminal Fuse 50-Amp – Blue/Sea
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Description
xOverview
The Blue Sea Systems 5177 Battery Terminal Fuse is a compact, marine-grade DC protection accessory designed for large battery banks on boats and fishing vessels. Its blue housing signals readiness for deck installations, while the precision terminals keep wiring tidy without crowding nearby electronics. This fuse is built to support reliable main circuit protection in demanding marine environments, and it integrates smoothly into well-planned electrical layouts.
Key benefits at a glance
- High interrupt capacity: 10,000 AIC at 14V DC helps guard main circuits from faults in sizeable battery banks.
- 50-amp rating provides an explicit protection threshold for common marine electrical configurations.
- Requires Terminal Fuse Blocks PN 5191 or PN 2151—do not mount the fuse directly to the battery terminal.
- Compact dimensions and marine-grade construction support installation in tight spaces aboard boats or fishing craft.
Design, build, and durability
Engineered for salt spray and vibration in marine settings, the fuse combines a sturdy terminal interface with a weather-and-corrosion resistant housing. The result is a compact component that stays reliable under typical boatboard conditions, while preserving a neat, organized battery area.
How it fits into your marine electrical system
Designed to work with compatible fuse blocks, this terminal fuse serves as a protective link between the battery cluster and downstream circuits. It suits scenarios where a centralized, clearly rated main fuse is preferred near the battery bank, enabling straightforward ABYC-aligned configurations through compatible hardware.
Real-world use cases
- On coastal fishing boats, it sits near the battery bank to help isolate faults before equipment power reaches critical devices.
- In recreational cruisers, paired with fuse blocks PN 5191 or PN 2151, it creates a tidy, maintainable main protection point near the power source.
Installation tips
- Pair with Terminal Fuse Blocks PN 5191 or PN 2151 for proper mounting and access.
- Avoid mounting directly to the battery terminal to ensure reliable contact and serviceability.
Notes: This accessory supports marine electrical configurations and should be installed following applicable standards. Its compact form and distinctive blue finish help keep the battery area organized while providing essential protection where you need it most.
FAQ
Q: What is the Blue Sea Systems 5177 Battery Terminal Fuse used for?
A: It offers DC main circuit protection for large battery banks (up to 50A) when paired with compatible fuse blocks, aligning with ABYC guidelines.
Q: How should this fuse be installed?
A: Do not mount directly to the battery terminal; use Terminal Fuse Blocks PN 5191 or PN 2151 for proper installation.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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