Sea-Dog Terminal Post with Buss Plate, 5/16-18 Stud, 48VDC 150A, Nylon/Nickel Plated Brass, 426828-1

The Sea-Dog Terminal Post with Buss Plate (426828-1) is a heavy-duty electrical distribution post built for marine 12-24V DC systems that need a reliable central connection point for multiple circuits. The post is constructed of injection molded nylon combined with a nickel plated brass and stainless steel terminal, giving it corrosion resistance for wet, salt-air environments while maintaining a strong mechanical connection. The buss plate itself is drilled for 8, #10-32 screws, allowing multiple ring terminals or wire leads to be gathered onto a single post rather than stacking connections on a standard stud.

This terminal post is rated for a maximum of 48VDC and 150A, making it suitable for demanding house-bank, engine, or accessory distribution panels where a single post needs to safely carry higher current loads. It mounts using four #10 RH fasteners (fasteners not included) and includes a cover designed to meet ABYC and USCG requirements, helping keep exposed terminals protected from accidental contact and stray metal debris. The mounting stud on this version is threaded 5/16-18.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 426828-1
• Product Type: Terminal Post with Buss Plate
• Material: Nylon/Nickel Plated Brass/Stainless Steel
• Fastener Thread: 5/16-18
• Fastener Type: #10 RH
• Buss Plate Screws: 8, #10-32 screws
• Maximum Voltage: 48VDC
• Maximum Current: 150A
• Overall Dimensions (A x B x C x D x E): 3-3/4 inches x 1-11/16 inches x 1-5/8 inches x 1-5/16 inches x 2-3/16 inches
• Mounting Hardware: Four #10 RH fasteners (not included)
• Compliance: Includes cover to meet ABYC/USCG requirements
• Weight: 0.17 pounds

Frequently Asked Questions

What is the maximum voltage and current rating for this terminal post? The Sea-Dog Terminal Post with Buss Plate (426828-1) is rated for a maximum of 48VDC and 150A, making it suitable for higher-load DC distribution points on a boat.

What thread size is the mounting stud? Part number 426828-1 has a 5/16-18 threaded stud. A version with a 3/8-16 stud is also available as a separate part number if you need the larger thread.

How many wires can I connect to the buss plate? The buss plate on the 426828-1 terminal post is drilled for 8, #10-32 screws, so up to 8 ring terminal connections can be gathered onto this single post.

What material is the terminal post made from? This terminal post is constructed of injection molded nylon combined with a nickel plated brass and stainless steel terminal, giving it corrosion resistance in marine environments.

Does the terminal post come with a protective cover? Yes, the Sea-Dog Terminal Post with Buss Plate includes a cover designed to meet ABYC and USCG requirements for covering exposed electrical terminals.

What hardware is needed to install this terminal post? Installation of the 426828-1 terminal post requires four #10 RH fasteners, which are not included and must be purchased separately.

How much does this terminal post weigh? The Sea-Dog terminal post, part 426828-1, weighs 0.17 pounds.

What are the overall dimensions of the terminal post? Part 426828-1 measures 3-3/4 inches by 1-11/16 inches by 1-5/8 inches by 1-5/16 inches by 2-3/16 inches across its reference dimensions.

Is this terminal post compliant with marine safety standards? Yes, the 426828-1 terminal post includes a cover that meets ABYC/USCG requirements for terminal protection aboard boats.

What voltage systems is this terminal post designed for? Rated up to 48VDC, this Sea-Dog terminal post is suited for standard 12V and 24V marine DC electrical systems.

Is there a version of this part with a different stud thread? Sea-Dog also offers part number 426830-1, which uses the same buss plate design but with a 3/8-16 threaded stud instead of the 5/16-18 stud found on 426828-1.