Blue Sea Systems AC A-Series 2-Pole Circuit Breaker Lockout Slide

Overview

The Blue Sea Systems A-Series Circuit Breaker Lockout Slide is a panel accessory for managing multiple AC power sources through double pole circuit breakers. It allows only one double pole AC breaker to be switched on at a time, which helps keep shore power, generator power, and inverter power from being connected together on the same AC panel.

This lockout slide fits World or A-Series and Rocker double pole circuit breakers. It uses the existing circuit breaker mounting screw holes, so it can be added without special panel modification. For boats with more than one AC source, it gives the panel a simple mechanical interlock that is easy to see and use during source changes.

Key features

• Mechanical lockout for AC source selection on marine electrical panels.
• Allows only one double pole AC circuit breaker to be activated at a time.
• Helps prevent AC power from shore power, genset, or inverter sources from being mixed.
• Fits World or A-Series and Rocker double pole circuit breakers.
• Installs through the circuit breaker mounting screw holes with no special panel modification.
• Available in 2-position and 3-position configurations for different AC source layouts.

Variants

This product is offered in two configurations based on the number of lockout positions needed on the AC panel.

The main difference is the number of selectable positions. Both variants are used with double pole AC circuit breakers and share the same practical purpose: keeping only one AC source active through the breaker group at a time.

• 4125: Positions 2. This version suits a two-source AC setup, such as shore power and a genset or inverter, where the panel needs a clear mechanical lockout between two double pole breakers.
• 4126: Positions 3. This version suits a three-source AC setup, such as shore power, genset, and inverter, where the source selector area needs one additional lockout position.

Installation and fit

The slide mounts at the breaker location using the existing circuit breaker mounting screw holes. That makes it useful for refits, panel upgrades, or replacement work where the goal is to add source lockout control without cutting or reworking the panel face.

Before installation, confirm the breaker style and the number of AC sources on the vessel. This accessory is intended for World or A-Series and Rocker double pole circuit breakers, so it should be matched to the breaker layout before the panel is assembled or modified.

Use cases on board

This lockout slide is a good match for boats with more than one AC input path, especially cruising boats and fishing boats that switch between dockside shore power, a generator, or an inverter. It adds a physical layer of control at the breaker panel, which is helpful when different operators may use the boat or when source changes happen often.

What’s included

• Lockout slide
• Mounting screws

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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