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Blue Sea Systems 5046 ST Blade Fuse Block Compact 8 Circuit with Cover

4.8 4.8 out of 5 stars 1,418 ratings

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8 Circuit
With cover

Purchase options and add-ons


About this item

  • Blue Sea Systems Fuse Block ST Blade Compact 8 Circuit with Cover, part number 5046, is a common source fuse block that provides surface mount circuit protection for ATO/ATC fuses in a compact footprint
  • Max Amps: 100A per block, 30A per circuit, Max Volts: 32V DC, Mounting :#8 Screw (M4), Recommended stud torque: 24 in-lb, Screw Terminal Torque: 18in-lb, Screw terminal type: #8-32 screws with captive star lock washer, terminal stud size: #10-32
  • Single side design allows wire entry from one side to maximize space
  • Ignition protected when cover is secure –meets ISO 8846 and SAE J1171 for use in a gasoline engine compartment
  • Clear insulating cover meets ABYC/USCG insulation requirements. Includes 4 write-on circuit labels. Fuses sold separately

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 8.94 x 1.65 x 1 inches; 0.04 ounces
  • Item model number ‏ : ‎ 5046
  • Department ‏ : ‎ unisex-adult
  • Date First Available ‏ : ‎ October 23, 2015
  • Manufacturer ‏ : ‎ BLUE SEA SYSTEMS
  • ASIN ‏ : ‎ B01BV1MTF0
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.8 4.8 out of 5 stars 1,418 ratings

Product Description

Blue Sea Systems Fuse Block ST Blade Compact 8 Circuit with Cover, part number 5046, is a common source fuse block that provides surface mount circuit protection for ATO®/ATC® fuses in a compact footprint. Max Amps: 100A per block, 30A per circuit, Max Volts: 32V DC, Mounting :#8 Screw (M4), Recommended stud torque: 24 in-lb, Screw Terminal Torque: 18in-lb, Screw terminal type: #8-32 screws with captive star lock washer, terminal stud size: #10-32. Single side design allows wire entry from one side to maximize space. Ignition protected when cover is secure –meets ISO 8846 and SAE J1171 for use in a gasoline engine compartment. Clear insulating cover meets ABYC/USCG insulation requirements. Includes 4 write-on circuit labels. Fuses sold separately.

Important information

Legal Disclaimer

PROP 65 WARNING This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.


From the manufacturer

Blue Sea Systems
5026-BSS application image

ST-Blade Fuse Blocks

Consolidates branch circuits and in-line fuses

The ST Blade Fuse Block was designed with fastener terminals to comply with ABYC Recommended Practices, and are built with tin-plated copper components for improved conductivity and lower operating temperatures. An optional cover protects the conductive surfaces from accidental shorting, labels each circuit, and stores spare fuses.

The ST Blade Fuse Block is ideal for use as a sub-panel in the DC distribution system. This solves the problem of using large and expensive circuit breaker panels as circuit protection for electronics and other branch circuits. With most circuit breaker panels a circuit breaker and an inline fuse are used for to protect electronic devices. By instead utilizing Blue Sea Systems ST Blade Fuse Block as a sub-panel, fuses more appropriate for electronics can be used, removing the need for inline fuses while only utilizing one position on the panel. This reduces the size of the panel needed and lowers the overall system cost.

  • Independent and/or Common Source fuse block
  • Fastener terminals for securing wires accept terminal rings
  • One-piece stainless flange nuts ensure safe and secure connections
  • Clear insulating cover with label recess satisfies ABYC/USCG insulation requirements
  • Accepts ATO and ATC fast acting blade fuses (sold separately)
  • Some models ignition protected or ingress protected
5023 150x300 5024 150x300 5045 150x300 5046 150x300 5056 150x300 5056100 150x300
4-Circ Term Mount w/Cover 4-Circ Term Mount w/Cover & Neg 4-Circ w/Cover 8-Circ w/Cover 4-Circ H20 w/Manual Cover 4-Circ H20 w/Twist Cover
Customer Reviews
4.8 out of 5 stars
112
4.7 out of 5 stars
388
4.8 out of 5 stars
1,418
4.8 out of 5 stars
1,418
4.8 out of 5 stars
21
4.5 out of 5 stars
10
Part Number 5023 5024 5045 5046 5056 5056100
Number of Circuits 4 4 4 8 4 4
Maximum Voltage 32V DC 32V DC 32V DC 32V DC 32V DC 32V DC
Maximum Amperage 30A per circuit/ 100A per block 30A per circuit/ 100A per block 30A per circuit/ 100A per block 30A per circuit/ 100A per block 25A per circuit/ 80A per block 25A per circuit/ 80A per block
Battery Terminal Mount
Ground Bus
Includes Cover
Common Source
Ingress Protection IP66 – protected against powerful water jets IP66 – protected against powerful water jets
Ignition Protected
5035 150x300 5037 150x300 5025 150x300 5030 150x300 5028 150x300 5033 150x300
6-Circ Ind w/Cover 6-Circ Ind No Cover 6-Circ w/Cover & Neg 6-Circ No Cover w/Neg 6-Circ w/Cover 6-Circ No Cover
Customer Reviews
4.5 out of 5 stars
232
4.8 out of 5 stars
1,418
4.8 out of 5 stars
2,363
4.8 out of 5 stars
1,418
4.8 out of 5 stars
1,418
4.8 out of 5 stars
1,418
Part Number 5035 5037 5025 5030 5028 5033
Number of Circuits 6 6 6 6 6 6
Maximum Voltage 32V DC 32V DC 32V DC 32V DC 32V DC 32V DC
Maximum Amperage 30A per circuit/ 100A per block 30A per circuit/ 100A per block 30A per circuit/ 100A per block 30A per circuit/ 100A per block 30A per circuit/ 100A per block 30A per circuit/ 100A per block
Includes Terminal Block Jumpers
Ground Bus
Includes Cover
Common Source
Independent Source Independent – circuits can be jumpered to be common source Independent – circuits can be jumpered to be common source
5026 150x300 5031 150x300 5029 150x300 5034 150x300 5032 150x300
12-Circ w/Cover & Neg 12-Circ No Cover w/Neg 12-Circ w/Cover 12-Circ No Cover 12-Circ Split w/Cover & Neg
Customer Reviews
4.8 out of 5 stars
6,161
4.8 out of 5 stars
1,418
4.6 out of 5 stars
314
4.8 out of 5 stars
1,418
4.7 out of 5 stars
468
Part Number 5026 5031 5029 5034 5032
Number of Circuits 12 12 12 12 12
Maximum Voltage 32V DC 32V DC 32V DC 32V DC 32V DC
Maximum Amperage 30A per circuit/ 100A per block 30A per circuit/ 100A per block 30A per circuit/ 100A per block 30A per circuit/ 100A per block 30A per circuit/ 100A per block
Split Bus Provides two isolated groups of six circuits
Ground Bus
Includes Cover
Common Source
Independent Source

What's in the box

  • Blue Sea Systems 5046 Fuse Block St Blade Mini 8 Cir-
  • Looking for specific info?

    Customer reviews

    4.8 out of 5 stars
    4.8 out of 5
    1,418 global ratings

    Customers say

    Customers like the quality, ease of installation, size and value of the fuse block. For example, they mention it's built very well, fits in the space they need it to go and is good value for money. Customers are also impresseded with cleanliness, and accessories. That said, opinions are mixed on the cover.

    AI-generated from the text of customer reviews

    239 customers mention235 positive4 negative

    Customers are satisfied with the quality of the terminal block. They mention it's built very well, matches the high quality one expects from Blue Sea, and is solid. The plastic has a very dense, high quality feel. Overall, most are happy with their purchase and recommend it to others.

    "...This was far and away the best of the lot -- robust in all respects, solidly mounted, simple. The others were quite wimpy and rattly in comparison...." Read more

    "...Perfect for a tight space . Good materials .. no issues ." Read more

    "Worked as designed. Would recommend. It's a little larger than what it looks like in the picture but not a big problem...." Read more

    "...I am pleased with the fuse block. No corrosion. It was worth the money regardless of the sticker issue...." Read more

    70 customers mention70 positive0 negative

    Customers find the terminal block easy to install and mount. They say it makes for a cleaner installation and is simple to do extra circuits on a car or motorcycle. Customers also say it helps make the wiring more organized and the common positive makes wiring a lot cleaner than running 4 individual positives.

    "...away the best of the lot -- robust in all respects, solidly mounted, simple. The others were quite wimpy and rattly in comparison...." Read more

    "Simple And Easy. Just What I Needed To Clean Up My Circuits...." Read more

    "...This really helped organize everything and keep the fuses all in once place and easily accessible. Works great." Read more

    "Easy to use and install expansion fuse box for my classic motorcycle." Read more

    39 customers mention36 positive3 negative

    Customers are satisfied with the size of the terminal block. They mention that it fits in the space they need it to go and has enough circuits to do the job. Some say that it's just the right size for their small RV, boat, and truck. It's also compact and can be used under the seat or under the dash. Some mention that the small size worked ideal with the Bussman circuit breaker. Overall, customers are happy with the compact size and functionality of the product.

    "Used two of these in my camper project . Perfect for a tight space . Good materials .. no issues ." Read more

    "Small, compact and kinda stylish. Does exactly what it need to do. Provide 4 circuits. Cover is also a nice touch...." Read more

    "...The fuse block is small enough to fit under a dashboard, but not too small to be difficult to connect up to four branch circuits...." Read more

    "...This item was the ideal size for my application...." Read more

    36 customers mention30 positive6 negative

    Customers like the value of the terminal block. They say it's a good product for the money, worth it, and well made.

    "...It was well worth the money and I still say if the stickers that were shipped with it were the same as the ones pictured then I would give it 5 stars." Read more

    "If you looking for quality you can rely on Blue Sea, worth every penny." Read more

    "...Worth the extra money after reading reviews from other fuse blocks. Be careful what you buy!..." Read more

    "...Well worth the extra few bucks over the crappy Chinese stuff. And, as in the photo, comes with a 15 amp ATO fuse installed...." Read more

    30 customers mention30 positive0 negative

    Customers like the appearance of the terminal block. They mention it looks great, has a simple design, and the cover is a nice touch. The product provides 4 circuits and is able to protect the fuse should something go bad. Some are happy with the quality and versatility of how they are designed.

    "...It's a neat and tidy solution, far more organized than the multiplicity of in-line fuses that was my initial approach." Read more

    "...Does exactly what it need to do. Provide 4 circuits. Cover is also a nice touch. I powered the fuse block via relay. No issues...." Read more

    "Functions as expected with a clean look. Blue sea systems components are as reliable and used in my van build." Read more

    "Looks like a great product, should fit my needs. Added photo of specs" Read more

    12 customers mention12 positive0 negative

    Customers like the cleanliness of the terminal block. They say it works great, keeps everything neat and clean, and cleans up the wiring a lot. Some mention that it's easy to install and a super cool piece for clean installs.

    "Easy installation, cleans up all those power wires on the positive terminal" Read more

    "Was very easy to install and cleaned up my battery nicely. I have this feeding several lights, an inboard air pump, and a water pump on my truck." Read more

    "...what I needed to make the install of my amp and usb ports neat and clean. Love that I can come on Amazon and find things like this." Read more

    "...added to our new boat to make wiring additional circuits simple and clean." Read more

    8 customers mention8 positive0 negative

    Customers like the accessories that can be added to the terminal block. They mention that it's great for adding additional electrical accessories, 12v toys, and an extra bus. Some say that it is a good addition to motorcycles, and that it can be used to add multiple outlets in the back of the car.

    "What a perfect solution for adding an extra BUS of a few circuits! Real well made, secure cover, and not overly huge. Great product!" Read more

    "This fuse block is great for adding accessories to your vehicle...." Read more

    "It works well, and doesn't take up a lot of space. Good addition to the motorcycle. I wish it had a ground bus." Read more

    "Perfect for my Jeep accessory project. Would buy again without hesitation...." Read more

    8 customers mention3 positive5 negative

    Customers are mixed about the cover of the terminal block. Some mention that they like the plastic cover to keep from shorting anything out across the board, while others say that it didn't have a cover plate.

    "...but I'm really disappointed with this fuse block since there is no cover included...." Read more

    "...I like the plastic cover to keep from shorting anything out across the terminals...." Read more

    "...After some research I realize that this did not have a cover plate. This kind of makes it dangerous because the contacts are exposed...." Read more

    "...on fuse block package talk about easy to snap off cover, but no cover was included. will return.. just found out i ordered a block without a cover...." Read more

    Benchmark in quality
    5 Stars
    Benchmark in quality
    Functions as expected with a clean look. Blue sea systems components are as reliable and used in my van build.
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    Top reviews from the United States

    Reviewed in the United States on January 5, 2024
    Style: 8 CircuitColor: With coverVerified Purchase
    One person found this helpful
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    Reviewed in the United States on September 29, 2023
    Style: 8 CircuitColor: With coverVerified Purchase
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    5.0 out of 5 stars Top quality
    Reviewed in the United States on September 29, 2023
    Used two of these in my camper project . Perfect for a tight space . Good materials .. no issues .
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    One person found this helpful
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    Reviewed in the United States on October 5, 2023
    Style: 6 CircuitColor: With coverVerified Purchase
    Reviewed in the United States on November 18, 2013
    Style: 6 CircuitColor: With coverVerified Purchase
    3 people found this helpful
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    Reviewed in the United States on September 9, 2023
    Style: 6 CircuitColor: With coverVerified Purchase
    Customer image
    5.0 out of 5 stars Works great
    Reviewed in the United States on September 9, 2023
    I used this fuse block to run heavier wiring from a lithium battery to my fish finders. Have a heavier ground wire right below the dash where all the grounds connect to. This really helped organize everything and keep the fuses all in once place and easily accessible. Works great.
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    One person found this helpful
    Report
    Reviewed in the United States on June 19, 2023
    Style: 4 CircuitColor: With coverVerified Purchase
    Reviewed in the United States on November 27, 2023
    Style: 4 CircuitColor: With coverVerified Purchase
    Reviewed in the United States on October 11, 2023
    Style: 4 CircuitColor: With coverVerified Purchase

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    The Duke
    5.0 out of 5 stars Top of the line baby
    Reviewed in Canada on July 28, 2023
    Style: 8 CircuitColor: With coverVerified Purchase
    Amazon Customer
    5.0 out of 5 stars Quality products.
    Reviewed in Canada on July 10, 2021
    Style: 6 CircuitColor: With coverVerified Purchase
    R. A. London
    5.0 out of 5 stars Top Quality
    Reviewed in the United Kingdom on February 3, 2024
    Style: 4 CircuitColor: With coverVerified Purchase
    rimuc
    5.0 out of 5 stars Absolut geiles Teil
    Reviewed in Germany on May 11, 2023
    Style: 8 CircuitColor: With coverVerified Purchase
    guy
    5.0 out of 5 stars great
    Reviewed in Canada on April 11, 2019
    Style: 12 CircuitColor: Without coverVerified Purchase