Blue Sea Systems Water-Resistant 100A BusBar, 300V AC, 48V DC, Tin-Plated Copper

Overview

The Blue Sea Systems Water-Resistant 100A BusBar is a covered common busbar for organizing 100A AC or DC distribution in wet or exposed areas of a boat. It gives installers a compact point for positive distribution, negative collection, or AC grounding circuits where splash, washdown, and bilge-area humidity make an uncovered busbar a poor fit.

The busbar is rated for 100A continuous service on AC or DC circuits, with maximum voltage ratings of 300V AC and 48V DC. It uses a tin-plated C11000 copper bus, one #10-32 terminal stud, and four #8-32 terminal screws, with wire capacity for one 8 AWG to 4 AWG input and four 16 AWG to 10 AWG load connections.

Key features

• 100A continuous rating for AC or DC circuits, with maximum ratings of 300V AC and 48V DC.
• Tin-plated C11000 copper bus helps maintain conductivity in marine electrical spaces where moisture and corrosion are constant concerns.
• Accepts one 8 AWG to 4 AWG input conductor and four 16 AWG to 10 AWG load conductors for small distribution groups.
• Water-resistant cover arrangement helps protect the connection points in lockers, consoles, engine spaces, and other exposed mounting areas.
• Includes three wire plugs to help maintain the water-resistant rating when fewer than four branch wires are installed.
• Nests with other Water-Resistant 100A Common BusBars and ST-Blade Water-Resistant Fuse Blocks for tighter electrical layouts.
• Mounting holes accept 1/4 inch or 6 mm screws, making it practical for panels, bulkheads, and equipment boards.
• Write-on circuit labels support cleaner service work and faster circuit identification later.

Variants

This busbar is offered in two cover configurations. Both are part of the same Water-Resistant 100A BusBar family and share the same core electrical role for covered marine power distribution.

The cover type is the main difference between the configurations. The manual-cover version adds wing screws for tool-free cover installation, which is useful where the cover may need to be removed during service or inspection.

• 2356, cover type: Standard. This configuration suits installations where a covered 100A busbar is needed and routine access to the cover is not the main concern.
• 2356100, cover type: Manual Cover. This configuration uses wing screws for tool-free cover handling, which can make service access simpler while keeping the covered layout.

Installation and setup

Install the busbar on a firm, dry mounting surface inside an electrical panel, console, locker, or equipment area where the conductors can enter cleanly without strain. The single-side nesting layout helps keep wire runs organized when several covered distribution components are mounted together.

Use correctly sized marine conductors, terminals, and circuit protection for the connected loads. The busbar is a distribution point, so upstream protection, cable sizing, and separation of positive, negative, and AC grounding circuits should match the vessel’s electrical plan.

Use cases on board

This busbar is a good match for boats that need a protected connection point for small distribution groups, electronics feeds, accessory circuits, negative returns, or AC grounding collection in areas where moisture exposure is expected. It is especially practical for compact rewires, console upgrades, and service boards where clean labeling and covered terminals make future troubleshooting easier.

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.

Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.