SKU: 35291668798

Blue Sea 250A 4x 5/16 Stud Busbar

Sale price$55.64 Regular price$61.82
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Ships within 48 hours · Estimated delivery Sep 19 - Sep 24

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Description

Blue Sea 250A 4x 5/16 Stud BusbarProfessional 250A Power Distribution for Marine and Automotive Systems The Blue Sea 250A 4x 5 16 Stud Busbar is engineered to provide a robust and reliable central point for consolidating high amperage wiring in demanding electrical setups. Designed for use in boats, caravans, RVs, and off grid 4WD systems, this 250A busbar ensures efficient power distribution while maintaining a clean and organised installation. By collecting negative returns or

Professional 250A Power Distribution for Marine and Automotive Systems

The Blue Sea 250A 4x 5/16 Stud Busbar is engineered to provide a robust and reliable central point for consolidating high-amperage wiring in demanding electrical setups. Designed for use in boats, caravans, RVs, and off-grid 4WD systems, this 250A busbar ensures efficient power distribution while maintaining a clean and organised installation. By collecting negative returns or positive feeds into one heavy-duty location, it significantly reduces cable clutter, improves system safety, and simplifies future troubleshooting.

Superior Materials for Harsh Environments

In the marine and automotive environment, corrosion and vibration are the enemies of reliable electrical connections. Unlike generic grade products that may utilise brass or lower-grade alloys, this Blue Sea busbar is constructed from Tin-Plated Copper CDA 110 / UNS 11000. This premium material choice delivers exceptional conductivity to minimise voltage drop, while the tin plating offers superior resistance to corrosion, even in salt-mist prone coastal areas.

The base is manufactured from UL 94-V0 rated glass-reinforced thermoplastic, ensuring high heat resistance and structural durability. This fire-retardant material provides peace of mind, knowing your electrical system is built on a foundation designed to withstand high temperatures and tough conditions.

Secure High-Torque Connections

A standout feature of this range is the design of the terminal studs. The 5/16"-18 (Approx. M8) stainless steel studs are insert-moulded directly into the base. This intelligent engineering eliminates the need for a securing nut at the back, allowing you to apply high torque to the terminals without the risk of the stud spinning or loosening over time. This ensures excellent electrical contact and secure retention of heavy-duty cable lugs.

Versatile Application and Safety

Whether you are designing a negative busbar return for a large battery bank or a positive distribution hub, this unit is rated for continuous currents up to 250 Amperes. It is also suitable for modern energy systems, supporting up to 48V DC and 300V AC, making it future-proof for lithium battery upgrades and higher voltage solar arrays.

The raised bus design allows for easy wrench access when attaching multiple large cables to a single stud. Additionally, the recessed mounting holes are designed to prevent accidental electrical shorts to metal mounting surfaces, such as aluminium boat hulls or steel vehicle chassis.

Compact at approximately 149mm in length, this 4-stud configuration is perfect for tight electrical lockers or smaller battery boxes where space is at a premium but high capacity is still required.

Key Features

  • 250A Continuous Rating for heavy-duty power distribution
  • Tin-Plated Copper Bus provides maximum conductivity and corrosion resistance
  • 5/16"-18 (Approx. M8) Stainless Steel Studs allow for high-torque connections
  • UL 94-V0 Rated Base resists high heat and fire
  • Insert Moulded Studs eliminate the need for backing nuts
  • Rated for 48V DC and 300V AC systems
  • Recessed mounting holes preventing accidental shorts

Upgrade Your Electrical Safety

Ensure your electrical system is safe, efficient, and professional. Order the Blue Sea 250A 4x 5/16 Stud Busbar today to tidy up your wiring and ensure reliable power delivery for your next adventure.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35291668798

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4.4 ★★★★★
Based on 13 reviews
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Verified Purchase
Shelby Phillips
Carnegie, US
★★★★★ 4
Not for heavy chewers!
Theme: Animals, Size: Medium
Didn't hold up well - but realized I didn't read that it was for "light chewers." Otherwise, cute design.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026
M
Verified Purchase
Mark Central CA
Bozeman, US
★★★★★ 5
Good for Chewers
Theme: Football, Size: Large
Dogs love it, they been chewing on it and it's like new. Also I put treats inside and they really like that. I have a small pit mix and a puppy shepherd husky mutt. They play tug of war with it and it's holding up really good.
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Reviewed in the United States on April 4, 2026
N
Verified Purchase
NatureGirlM
Belleville, US
★★★★★ 5
Great inside toy
Theme: Football, Size: Large
Our Rottie loves these! I wanted something like the Jolly Ball but that is soft for inside the house. She's had a lot of fun with this, picking it up, tossing it, playing soccer, etc.
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Reviewed in the United States on May 15, 2026
D
Verified Purchase
DC
Waukegan, US
★★★★★ 5
A BIG hit with my BIG dog!
Theme: Football, Size: Large
My Great Dane/Boxer mix LOVES this toy. She is over 100 lbs and very strong. She got a hold of my son's real football last year and after she made the initial holes and deflated it we just let her have it. She completely ripped it to shreds in about 7 months but had such a blast tossing it around and galloping around the yard with it, I knew I had to replace it with something of the same shape but hopefully more durable. This is it! She really adores this. We play catch and tug with it and it seems like it's going to last a really long time. The rubber is flexible but strong. I'll try to get a picture of her with it and load it. I highly recommend this toy. We ordered the Large size, by the way. :-) 2-6-2015 - Update: I am just now ordering a new one. For nearly 4 years, the old one has been kept outside in the rain, sun, snow, and ice. She still loves to grab it, shake it, throw it up in the air and play tug with whenever she's outside. The rubber is just now starting to crack so it's time for a new one.
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Reviewed in the United States on May 2, 2011
A
Verified Purchase
Angel Biezeman
Pawtucket, US
★★★★★ 4
Holding up very well, favorite
Theme: Football, Size: Large, Theme: Football, Size: Large
A few weeks ago I ordered three dog toys for my dogs. I have a German shepherd, Lab mix and a medium mix. The latter boy is the biggest destroyer in our family, he chewed pieces of a black Kong. I did not really have high hopes for this football shaped toy with holes, but it is holding up beyond my expectations. You can see some teeth marks, but they are not chewing it up (yet?). They love to play tug with this, kick it around by themselves, or lie down with it and chew on it. I like it because it is a soft rubber and doesn't make so much noise when they throw it around on my hard flooring. For the price, they are definitely getting a whole lot of fun out of it. Edit: Now, more than a month later, my dog managed to get a small piece off after a heavy chew session. After that first piece apparently it is easy to get more off, and he wants to swallow it so the ball is in the trash.
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Reviewed in the United States on September 29, 2021

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