Blue Sea Systems ML Series Paralleling Link Bus, 500A, Tin-Plated Copper

Overview

The Blue Sea Systems 9160 is a paralleling ML Series link bus used to join compatible ML Series components in a high-current DC system. It is made from tin-plated copper and carries a 500A continuous rating, which makes it a practical fit for battery management layouts where low resistance and corrosion control matter.

On board, this part is used when ML Series switches or charging components need a direct parallel connection without building short jumper cables. That keeps the installation cleaner and helps when space is limited around the battery switch cluster, charging relay area, or a compact electrical compartment. This is the copper link itself, not the switch or relay, so the main fit question is whether your system is built around compatible Blue Sea ML Series hardware.

Key features

• 500A continuous rating for high-current battery management circuits
• Tin-plated copper construction that keeps conductivity high and stands up better in damp marine spaces
• Works with all ML-ACRs, all ML-Solenoids, and all ML-Remote Battery Switches
• Creates a fixed parallel connection without fabricating short jumper cables
• Useful where ML Series components are mounted close together and cable routing space is limited

Compatibility and fit

This link bus belongs in Blue Sea ML Series assemblies where compatible components are being paralleled as part of the switching or charging layout. It is also used with PowerBar 1000 setups that call for this ML Series accessory. It is not a general-purpose busbar for unrelated battery hardware, so it should be matched to the ML platform rather than to cable size or system voltage alone.

It makes the most sense on boats with grouped battery control gear, such as a house and start bank setup built around ML remote switches or an ML-ACR arrangement. For refits, it is a straightforward way to tidy up an existing ML installation and remove the extra bulk that comes with short custom cable jumpers.

Installation and setup

Because this is a solid conductive link, terminal spacing, orientation, and protection around nearby live parts still matter during installation. The advantage is a fixed copper path with fewer connection variables than a short cable jumper, but it should still be installed with the same attention to clearance, hardware security, and service access you would expect in any high-current DC section of the boat.

This part suits owners and installers already working inside the Blue Sea ML ecosystem who want a neat parallel connection between compatible components. It is less relevant for systems built around standard manual battery switches, non-ML relays, or layouts that need flexible cable runs instead of a rigid link.

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.

Learn more.

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.

Learn more.

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.

Learn more.