Blue Sea Systems Dual PowerPost Cable Connector, 48V DC, #10 Screw Mounting

Overview

The Blue Sea Systems Dual PowerPost is a two-stud cable connector for creating protected termination points in marine DC power wiring. It is used when heavy-gauge conductors need a secure connection point, including outboard engine harness extensions and other high-current cable runs on boats.

The range is rated for up to 48V DC and mounts with #10 screws or M5 fasteners. Each configuration uses a red and black insulated layout, which helps keep positive and negative conductors separated and easy to identify during installation or service.

Key features

• Two-stud PowerPost layout gives large DC conductors a clear termination point instead of stacking connections in cramped battery or engine spaces.
• 48V DC maximum voltage rating supports common 12V, 24V, 32V, and 48V marine DC systems within the product rating.
• #10 screw or M5 mounting keeps the connector easy to place on a bulkhead, inside a rigging compartment, or near an outboard harness extension point.
• Red and black insulators help separate polarity and reduce the chance of accidental contact around exposed cable lugs.
• Available with 5/16"-18 studs, 3/8"-16 studs, or one of each size for matching different cable lug hardware.

Variants

This Dual PowerPost is offered in multiple stud-size configurations so the connector can match the cable lugs already used in the boat’s DC wiring.

The stud size changes between variants. Across the range, the connector keeps the same two-stud format, 48V DC maximum voltage rating, #10 screw or M5 mounting, and red and black insulated layout.

• 2016: Stud size pair 2 x 5/16"-18. This version suits installations where both cable lugs are sized for 5/16"-18 terminal studs, with a stud torque of 120 in-lb.
• 2017: Stud size pair 2 x 3/8"-16. This version suits installations where both cable lugs are sized for 3/8"-16 terminal studs, with a stud torque of 140 in-lb.
• 2018: Stud size pair 1 x 5/16"-18 plus 1 x 3/8"-16. This mixed-stud version is useful where two conductor ends use different lug sizes, such as some outboard harness extension work.

Installation and fit

Plan the mounting location so the cable lugs can sit flat on the studs without pulling against the conductor or bending sharply at the insulation. The connector should be mounted where the fasteners can be tightened properly and where the insulated posts remain accessible for inspection.

Before ordering, confirm the ring terminal hole size on each cable end. Matching the stud size to the lug is important because oversized holes can reduce contact quality, while undersized lugs will not fit the stud.

Use cases on board

This connector is a practical match for outboard-powered boats, repower projects, and DC wiring upgrades where factory cable length or conductor routing needs a clean termination point. It also works well in battery compartments, rigging areas, and protected electrical spaces where high-current conductors need to be joined or extended without turning the connection into an untidy stack of loose hardware.

What’s included

• Dual PowerPost cable connector
• One black insulator
• One red insulator

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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