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.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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