Blue Sea Systems PowerBar 600A BusBar, 300V AC, 48V DC, 3/8-16 Stud

Overview

The Blue Sea Systems PowerBar 600A BusBar is a high-current bus bar for organizing heavy DC and AC cable connections in marine electrical systems.

It is rated for 600A DC and 545A AC continuous service, with a maximum voltage rating of 48V DC or 300V AC. The 3/8"-16 stud terminals suit large cable lugs used in battery banks, inverter feeds, windlass circuits, thrusters, charging systems, and main distribution points where clean cable routing matters.

The bus is tin-plated copper CDA 110/UNS11000 on a UL 94-V0 rated glass-reinforced thermoplastic base, giving installers a compact way to build a central positive, negative, or ground bussing point while keeping high-amperage terminations accessible for inspection and service.

Key features

• 600A DC and 545A AC continuous rating for high-current marine distribution work.
• Maximum voltage rating of 48V DC or 300V AC for use in common marine DC systems and applicable AC distribution layouts.
• 3/8"-16 stud terminals accept large cable lugs used on battery cables and other heavy conductors.
• Tin-plated copper bus helps maintain conductivity in demanding onboard electrical environments.
• UL 94-V0 rated glass-reinforced thermoplastic base adds insulation and support for panel or bulkhead mounting.
• Terminal stud torque rating of 140 in-lb helps installers tighten connections to a defined value instead of guessing.

Variants

This PowerBar 600A BusBar range is offered in two terminal-count configurations, so the main difference is how many high-current stud connections are available on the same style of bus bar.

Both variants use 3/8"-16 stud terminals and share the same 600A DC, 545A AC, 48V DC, and 300V AC ratings. The right configuration depends on how many heavy cable takeoffs need to land at the bussing point.

• 2104: 4 terminals. This version suits smaller high-current layouts, such as a main battery connection with a limited number of branch cables or charging leads.
• 2107: 8 terminals. This version gives more landing points for systems with multiple heavy cable runs, such as larger battery banks, inverter circuits, windlass wiring, or grouped distribution feeds.

Installation and setup

Mount the bus bar where cable runs can be kept short, supported, and protected from accidental contact. Engine rooms, battery compartments, electrical panels, and service lockers are common locations, provided the mounting surface is solid and the terminals remain accessible.

Use properly crimped marine cable lugs sized for the conductor and stud, then tighten the stud hardware to the specified torque. High-current connections should be checked as part of routine electrical maintenance, especially after installation, after heavy vibration, or after work has been done near the battery or charging system.

Compatibility and fit

This bus bar is a fit for boats that need a compact high-amperage junction point rather than stacking multiple heavy cables directly on a battery post or device terminal. It is useful on cruising boats, fishing boats, workboats, and refits where the electrical system is being cleaned up or expanded.

Before installation, confirm cable lug hole size, available mounting space, conductor routing, circuit protection, and whether the bus bar will be used for positive, negative, or ground bussing in the vessel’s wiring plan.

Materials and corrosion resistance

The tin-plated copper bus supports conductivity while giving the exposed metal surface better resistance to the conditions found around marine electrical compartments. The insulated base helps separate the energized bus from the mounting surface, but the installation should still be protected from loose gear, tools, and unintended contact.

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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