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Blue Sea 5191 Terminal Fuse Block 30-300AMP

Blue Sea 5191 Terminal Fuse Block 30-300AMP

Q: Does this item come with the fuse terminal included? If so, how do I specify the amperage

I just ordered three of these - they each came with a 300A fuse. I was not expecting fuses to be included, so I had ordered them separately. If this is not a shipping/packaging mistake, it would be nice if the seller gave the option to choose a fuse size. While I can use a 300A on one of the terminals, I needed smaller ones for the others. I didn't buy them weeks ago because of the relatively high price of these fuses (typically ~$15 each). They were on sale for $10, so I got them now.

Q: I have a new 100ah 12v lifepo battery. what fuse size do i need to go with this?

At solavanbuild, I use 150 amp fuses with 1/0 AWG battery cables in most of my installs.

Q: I'm thinking of running a charge/power wire of the alternator to a trailer battery. Would it be OK to use this off the charge lead on the alternator?

I would recommend an automatic Charing Relay ACR. Blue sea makes great ones. I use their Mini-ACR because my boat alternator is less than 65A. Their standard handles up to 300A. Remember regardless, you will need TWO of these fuses, one at each battery. If your alternator puts out 60A then 75A fuses, if it puts out 100A than 130-150A fuses.

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Product ID: 213833808

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Details

Current Rating
30 Amps
Connector Type
Screw
Material
Other
Colour
Other
Brand
Blue Sea

⚡30-300 AMP heavy-duty current range

🔩Secure screw-type connectors

🛡️Durable, high-quality build

Frequently Bought Together

Description

⚡ Fuse your power needs with Blue Sea’s trusted strength!

BUILT TO LAST - Robust materials engineered for long-term durability and safety
COMPACT YET MIGHTY - Small footprint (6.35 x 6.35 x 5.08 cm) fits tight spaces without compromise
ROCK SOLID CONNECTIONS - Screw terminal design ensures reliable, vibration-resistant contact
POWER UP WITH CONFIDENCE - Handles 30 to 300 Amps for versatile electrical setups
TRUSTED BRAND RELIABILITY - Blue Sea Systems’ original quality you can count on

The Blue Sea 5191 Terminal Fuse Block supports a broad current range from 30 to 300 Amps, featuring secure screw-type connectors and a compact design. Manufactured by Blue Sea Systems, it offers professional-grade durability and reliability for demanding electrical applications.

Specifications

Current Rating	30 Amps
Connector Type	Screw
Material	Other
Colour	Other
Brand	Blue Sea Systems
Voltage	58 Volts
Manufacturer	BLUE SEA SYSTEM
UPC	632085051914
Global Trade Identification Number	00632085051914
Item model number	5191
Product Dimensions	6.35 x 6.35 x 5.08 cm; 45.36 g
ASIN	B0019ZBTV4

Have a Question? See What Others Asked

Does this item come with the fuse terminal included? If so, how do I specify the amperage

I have a new 100ah 12v lifepo battery. what fuse size do i need to go with this?

I'm thinking of running a charge/power wire of the alternator to a trailer battery. Would it be OK to use this off the charge lead on the alternator?

Can I use this as a bus bar (without a fuse), just to extend a 5/16 battery terminal. Thank you

Common Questions

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