Blue Sea Systems MAXI Fuse, 32V DC, 1000A Interrupt Capacity, Tin-Plated Connector Blades, Visible Blown Indicator

Overview

The Blue Sea Systems MAXI Fuse is a blade-style DC fuse for economical branch circuit protection on boats, with amperage options from 30A to 80A. It is rated for a maximum of 32V DC and has a 1000A interrupt capacity, making it a practical fit for many 12V and 24V marine electrical systems when used within the correct circuit design.

This fuse is commonly used in DC distribution panels, fuse blocks, and dedicated fuse holders where a protected branch circuit needs a replaceable fuse rather than a resettable breaker. The visible blown-condition indicator helps speed up checks during troubleshooting, which matters when access is tight inside a console, lazarette, engine room, or battery compartment.

The connector blades are plated for corrosion resistance, helping maintain electrical contact in damp marine spaces where salt air and condensation are part of normal service life.

Key features

• Available in 30A, 40A, 50A, 60A, 70A, and 80A ratings for matching the fuse to the protected circuit.
• Maximum voltage rating of 32V DC for use in many low-voltage marine DC systems.
• 1000A interrupt capacity for branch circuit protection within properly sized DC installations.
• Visible blown-condition indicator makes a failed fuse easier to identify during onboard troubleshooting.
• Plated connector blades help resist corrosion at the contact points.
• Works with Blue Sea Systems MAXI fuse holders and MAXI fuse blocks.

Variants

This MAXI Fuse range varies by amperage rating, with options covering 30A, 40A, 50A, 60A, 70A, and 80A circuits. The amperage selection should match the wire size, load, and protection requirements of the specific DC branch circuit.

Across the range, the confirmed common specifications include a 32V DC maximum voltage rating, 1000A interrupt capacity, visible blown-condition indication, plated connector blades, and compatibility with MAXI fuse holders and fuse blocks.

Compatibility and fit

This fuse is intended for MAXI fuse holders and fuse blocks, so it should not be substituted into ATO, ATC, ANL, MRBF, MEGA, or terminal-style fuse locations. Before replacing an existing fuse, match the physical fuse type and confirm that the amperage rating is correct for the circuit.

For new installations, the fuse rating should be selected as part of the overall circuit design. On a boat, that means looking at the wire gauge, expected load, run length, equipment manual, and applicable marine electrical practices rather than simply matching the largest rating available.

Use cases on board

This fuse is a good match for boat owners and installers building or servicing DC branch circuits where a compact blade-style fuse is already specified. It can be used in protected electrical areas such as helm wiring, accessory distribution, battery-adjacent fuse blocks, and service panels, provided the installation uses the correct MAXI fuse holder or block.

The visible indicator is especially useful for spare-fuse kits and service work, since it lets a technician or owner spot a blown fuse quickly before moving deeper into circuit testing.

Installation and care

Install the fuse only with power off and only in a holder or block that accepts MAXI fuses. The fuse should seat fully in the contacts without looseness, heat damage, or signs of arcing. Any holder showing corrosion, melted plastic, or weak contact tension should be corrected before the circuit is put back in service.

Keep spare fuses in the correct amperage ratings for the circuits on board. After a fuse opens, replace it with the same type and rating only after checking the cause of the fault, since repeated fuse failures usually point to an overload, short, damaged wiring, or a connected device that needs attention.

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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