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Terminal Blocks 20A - 65A

4.1 4.1 out of 5 stars 41 ratings

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8 Circuits


About this item

  • 10 Circuit 20 Amp AC/DC 300V AC/DC Terminal Block
  • Closed back design completely insulates power from the mounting surface
  • Each screw pair is one isolated circuit
  • Jumpers allow creation of common circuits (sold separately)

From the manufacturer

Blue Sea Systems
battery chargers, battery switches, automatic charging relays, fuse blocks, busbars, meters

Blue Sea Systems was founded in 1992 based on a commitment to create innovative, high quality electrical products to improve the safety, simplicity, and reliability of boating. Since that time the range of product has expanded to over 1,000 items and distributed to customers in over 50 countries including Marine, Industrial, RV, and Specialty Vehicle markets. Products include battery chargers, battery switches, automatic charging relays, fuse blocks, busbars, meters, and both standard and custom power distribution panels. The company is committed to offering quality products that are engineered for the harsh marine environment, built to last, with a dedicated satisfaction and support team. Industry involvement ensures products meet ABYC, NMMA, and Coast Guard standards.

What Makes Blue Sea Systems Different:

360 Panel

Blue Sea Battery Switches

Push Button Circuit Breakers

Selection

Over 1,000 electrical products are designed to work together as a fully integrated system.

Industry Standards

Industry involvement ensures products meet ABYC, NMMA, and Coast Guard standards.

Quality

Blue Sea Systems is committed to product quality and is managed in a manner consistent with international business practices with a dedicated satisfaction and support team.

Product Description

Closed back design completely insulates power from the mounting surface Each screw pair is one isolated circuit Jumpers allow creation of common circuits.

Product information

Technical Details

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Customer reviews

4.7 out of 5 stars
4.7 out of 5
908 global ratings

Customers say

Customers like the quality, ease of use, and value of the terminal block. For example, they mention it's well made of appropriate materials, sturdy enough to do the job, and easy to install and use. Opinions are mixed on fit.

AI-generated from the text of customer reviews

77 customers mention73 positive4 negative

Customers are satisfied with the quality of the terminal block. They mention it's well-made of appropriate materials, sturdy enough to do the job, and works great for prototyping heavy duty electrical stuff. The block is made from a better-than-most plastic that doesn't split or crack when fastening it down. Overall, most are happy with the results and recommend it to others.

"...This terminal block is made from a better-than-most plastic that doesn't split or crack when fastening it down...." Read more

"...and the connections run the amperage through in a safe and good looking manor. I'll be ordering a few more for extras." Read more

"Perfect!" Read more

"...Cost was more than fair for most other options and quality was better than some higher priced alternatives as well. Cannot complain." Read more

9 customers mention9 positive0 negative

Customers find the terminal block easy to install and use. They say it mounts easily, attaches to each panel, and makes building relay pods easy. Customers also say it's easy to screw and unscrew the ports. Overall, customers are satisfied with the ease of use of the product.

"...No biggie. Good price none the less ad was easy to work with." Read more

"Just as advertised, easy to secure, great for adding accessories to your vehicle (like emergency lighting or flood lights)...." Read more

"...They are easily attached to each panel and I use them to route wires in series to other panels to make an array...." Read more

"Pretty straightforward, but well made." Read more

7 customers mention7 positive0 negative

Customers appreciate the value of the terminal block. They say it has a good price.

"...Cost was more than fair for most other options and quality was better than some higher priced alternatives as well. Cannot complain." Read more

"...It didn't say that it did but I guess I just expected it. No biggie. Good price none the less ad was easy to work with." Read more

"Worked perfect for me, and are way cheaper than the same block i can buy from the local NAPA store...." Read more

"...Zero issues, cheaper than similar at HD." Read more

4 customers mention4 positive0 negative

Customers appreciate the versatility of the terminal block. They say it's useful to charge multiple electronics, can be used for various applications, and is a nice junction for powered items. Customers also mention that the quality is excellent and it'd be perfect for a power distribution block.

"This product makes ground connections easy! Can be used for various applications." Read more

"Very useful to charge multiple electronics. Keeps things nice & tidy." Read more

"Excellent quality. Perfect for a power distribution block." Read more

"Nice junction for powered items...." Read more

20 customers mention6 positive14 negative

Customers are mixed about the fit of the terminal block. Some mention that it's the perfect size, while others say that it is too small for 14-16 gauge ring connectors.

"Nothing wrong with the terminal block, but smaller than I thought. I use 14 gauge wire with heat shrink ring terminals everywhere in my boat...." Read more

"...This terminal block is actually really small! After I received it, I had gone back to amazon to look at others listed...." Read more

"...block that could handle the job in a tight place and this was the perfect size...." Read more

"This terminal block is good quality but the slots are too small for 14-16 gauge ring connectors. Smaller 18-22 gauge connectors might fit...." Read more

Built well, but too tight.
4 Stars
Built well, but too tight.
Built like a tank, but I had to use 6 AWG terminals with a larger screw hole than is correct for the size screw in the terminal block or else the ring terminal would not sit flush. It seems like the terminal isolators are either too close, or this is only meant for spade terminals. I'm using MIL-SPEC terminals left over from a mod on one of the aircraft I work on, so I know my terminals aren't defective. If you find terminals that fit it, then it's a beast. It's not convenient to add a second conductor to each side since space is already so limited, so I'd suggest only using this as a feeder terminal strip for other bus bars. It CAN be done, but be sure your ring terminals have full contact so you don't add a high resistance to your system. If there was just a little more room, and I mean by a few thousandths of an inch this would be a 5 star product.
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Top reviews from the United States

Reviewed in the United States on January 20, 2024
Style: 4 CircuitsSize: 30 AmpsVerified Purchase
Reviewed in the United States on March 17, 2021
Style: 4 CircuitsSize: 20 AmpsVerified Purchase
Reviewed in the United States on September 15, 2020
Style: 6 CircuitsSize: 20 AmpsVerified Purchase
4 people found this helpful
Report
Reviewed in the United States on May 9, 2022
Style: 12 CircuitsSize: 30 AmpsVerified Purchase
One person found this helpful
Report
Reviewed in the United States on June 1, 2022
Style: 10 CircuitsSize: 65 AmpsVerified Purchase
Reviewed in the United States on February 11, 2023
Style: 2 CircuitsSize: 20 AmpsVerified Purchase
Reviewed in the United States on February 12, 2022
Style: 12 CircuitsSize: 30 AmpsVerified Purchase
Reviewed in the United States on March 20, 2020
Style: 6 CircuitsSize: 30 AmpsVerified Purchase
One person found this helpful
Report

Top reviews from other countries

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Très satisfaite…même si ce n’était pas la bonne couleur!
5.0 out of 5 stars Très bonne qualité
Reviewed in Canada on February 17, 2024
Style: 4 CircuitsSize: 30 AmpsVerified Purchase
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Très satisfaite…même si ce n’était pas la bonne couleur!
5.0 out of 5 stars Très bonne qualité
Reviewed in Canada on February 17, 2024
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Roger
5.0 out of 5 stars Great quality product
Reviewed in Canada on June 17, 2022
Style: 12 CircuitsSize: 30 AmpsVerified Purchase
André
4.0 out of 5 stars Les vis en croix ne sont pas toujours appropriées
Reviewed in Canada on October 5, 2021
Style: 10 CircuitsSize: 30 AmpsVerified Purchase
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André
4.0 out of 5 stars Les vis en croix ne sont pas toujours appropriées
Reviewed in Canada on October 5, 2021
Idéal pour une boîte de jonction sans utiliser des marettes....
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Amazon Customer
5.0 out of 5 stars Buy in India with CAUTION
Reviewed in India on April 14, 2021
Style: 4 CircuitsSize: 30 AmpsVerified Purchase
Trojan
2.0 out of 5 stars Smaller than a terminal block should be
Reviewed in Canada on January 23, 2020
Style: 6 CircuitsSize: 20 AmpsVerified Purchase