Blue Sea Terminal Fuse, 200 Amp, Blue
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Blue Sea Terminal Fuse, 200 Amp, Blue (SKU 661-5187) is an ignition-protected MRBF terminal fuse with a clear window for visual indication of a blown condition. Color-coded for quick amperage ID, it’s designed for DC main circuit protection when used with the appropriate Blue Sea terminal fuse block (it should not be mounted directly to the battery terminal).
Key Features
- 200 Amp marine terminal fuse (Blue Sea Systems MRBF)
- Ignition protected for installation on gasoline powered boats
- Clear window provides visual indication of a blown condition
- Color coded for each amperage
- ABYC-referenced interrupt rating for DC main circuit protection on large battery banks
- Requires use with a terminal fuse block (do not mount directly to the battery terminal)
Intended Use
- Marine DC power distribution protection
- DC main circuit protection for large battery banks (when selected per ABYC requirements)
- Systems such as inverters, windlasses, and bow thrusters (as circuit protection devices)
Product Details
- • Product title: Blue Sea Terminal Fuse, 200 Amp, Blue
- • Brand: Blue Sea Systems (tag: brand:blue-sea-systems)
- • Category: Breakers, Fuses & Fuse Holders
- • Product SKU: 661-5187
- • Amperage: 200 Amp
- • Color: Blue
- • Visual indicator: Clear window for blown condition
- • Ignition protection: Ignition protected
- • Use with: Requires a terminal fuse block (not direct battery terminal mounting)
Parts Desk Insights
Best Use Case: Use this fuse as part of a properly fused DC main circuit protection setup in a marine electrical system—especially where ignition protection and clear blown-fuse indication are desired. Pair it with the correct Blue Sea terminal fuse block for your installation design.
Common Issues: Most common mistakes are (1) mounting the fuse directly to the battery terminal instead of using the terminal fuse block, and (2) selecting the wrong terminal fuse block/amperage combination for the circuit. If a fuse blows, visually confirm through the clear window and inspect for the underlying fault before replacing.
Related Products & Accessories
- Terminal Fuse Blocks (MRBF) - Pair with the appropriate Blue Sea Systems terminal fuse block—this fuse is designed to be used with a terminal fuse block, not mounted directly to the battery terminal.
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.