SKU: 35907336177

Blue Sea 250A 4x 5/16 Stud Busbar

Sale price$55.64 Regular price$61.82
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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: 35907336177

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 992 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
E
Verified Purchase
Eric
Port Orchard, US
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2024
C
Verified Purchase
Carl L. Bradley
Phoenix, US
★★★★★ 1
Kinda flimsy…
Thought the assembly was metal, it’s some kind of PVC.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
M
Verified Purchase
Melvin Marsh
Lexington, US
★★★★★ 5
100% worth the money
Size: 16'' x 43'', Size: 16'' x 43''
Great product. They look good and function well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
A
Verified Purchase
Amazon Customer
Belleville, US
★★★★★ 5
Cheaper than the supply house.
Size: 42'' x 28''
I used black pipe similar to this to build some shelves in my man cave. I went looking to build a studio desk and found that Lowe's wanted $8 per floor flange (~$96 just for flanges and not including the pipe, tees, or the other fittings). Even supply house dot com wanted $4 per flange (~$48, but was still missing the other parts AND they didn't offer them because of supply chain issues). For about $65, this was a great buy. Yes everything is greasy. This will be the case regardless of where you buy it. I used some gloves, shop towels, and acetone and it cleaned up easily. For a top, I used a pre-made countertop from Lowe's (~$100) and a 1x4 piece of poplar I had sitting around.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2023
M
Verified Purchase
mjh
Houston, US
★★★★★ 4
Pipes don't assemble square, nice stand though.
Size: 42'' x 28''
These arent standard SCH40 pipe for starters. Significantly lighter. Easier to move around and sturdy enough to support a table, but this isnt pipe. As such, when I threaded it together, it wasn't square. I was able to flatten it mostly, but I had to use a clamp to bend the assembled piping to sguare so it would attach to the table runners. It's fine, but it surprised me. It looks nice, and it provides plenty of support for the table. All good. Several folks complained that the pipes are oily. They are supposed to be to prevent rust. I wiped them down with a few cleaner wipes, and they are fine. Be aware that this doesn't come with instructions or the wood screws you may need for your table top.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2023

recommand products