Blue Sea 5177 50A Fuse Terminal [5177]

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Regular price: $19.79
Regular price: ~~$22.99~~
Sale price: $19.79

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SKU: CWR-32548 UPC: 632085051778

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Terminal fuse for 50A marine DC circuit protection, providing visible blown-fuse indication and ignition-protected installation for gasoline-powered boats.

The Blue Sea Systems 5177 is a red 50A MRBF terminal fuse for marine electrical systems and large battery-bank applications. Its clear window makes the fuse condition easy to check without removing it. The fuse must be installed with a compatible terminal fuse block and should not be mounted directly to a battery terminal.

50A amperage rating: Provides circuit protection for appropriately sized marine DC electrical systems.
Ignition protected: Suitable for installation aboard gasoline-powered boats.
Clear inspection window: Shows when the fuse has blown for faster troubleshooting.
Red color coding: Helps identify the 50A fuse rating at a glance.
Terminal fuse format: Installs with a compatible terminal fuse block, including Blue Sea Systems PN 5191 or PN 2151.
Marine-rated interrupt capacity: Meets ABYC requirements for DC main circuit protection on large battery banks.

Use the Blue Sea Systems 5177 as a replaceable overcurrent-protection device in marine battery and DC distribution systems. Its terminal-mounted MRBF format keeps the fuse close to the protected power connection when used with the required fuse block, helping limit the risk of unprotected cable runs. The clear window supports visual inspection during routine electrical checks, while ignition protection makes it appropriate for gasoline-powered boat installations. It is rated for systems up to 58V DC and is intended for use with compatible Blue Sea terminal fuse blocks rather than direct mounting to a battery terminal.

Brand	Blue Sea Systems
Model	5177
Product type	MRBF terminal fuse
Amperage	50A
Color	Red
Maximum voltage	58V DC
Ignition protected	Yes
UPC	632085051778
Weight	0.06 lb
Required fuse block	Blue Sea Systems PN 5191 or PN 2151

What is this fuse used for?
It provides 50A overcurrent protection for compatible marine DC electrical and battery-bank circuits.
Does it include a fuse block?
No. The fuse must be used with a compatible terminal fuse block.
Can it be mounted directly to a battery terminal?
No. Install it with the required terminal fuse block instead of mounting it directly to the battery terminal.
Is it suitable for gasoline-powered boats?
Yes. Its ignition-protected design is suitable for installation aboard gasoline-powered boats.
How can a blown fuse be identified?
The clear inspection window provides a visual indication of a blown condition.

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