Blue Sea Systems MEGA/AMG Fuse Block, 100-300A, 32V DC, With Cover

Overview

The Blue Sea Systems 5001 is a MEGA/AMG fuse block with an insulating cover for 100 to 300A circuit protection on 12V or 24V systems up to 32V DC. It accepts 5/16 inch M8 ring terminals and is built for high-current DC feeds where you need a single fuse mounted in a clean, protected way.

This style of block is commonly used close to batteries and on feeds for inverters, chargers, windlasses, thrusters, and main DC distribution circuits that use MEGA or AMG fuses. The cover has cable breakouts in three directions, which helps when routing is tight along a bulkhead or inside a battery compartment, and the fuse itself is sold separately so the circuit can be matched to the required amperage.

Key features

• Fits MEGA and AMG fuses in the 100A to 300A range
• Rated for DC systems up to 32V, covering typical 12V and 24V boat electrical setups
• 5/16 inch M8 stud connections work with common marine ring terminals and cable up to 2/0 AWG
• Insulating cover meets ABYC and USCG insulation requirements and allows cable entry from three directions
• Stainless steel studs and insert-molded mounting points help keep the fuse connection secure under vibration
• Reinforced PBT base and polycarbonate cover handle heat better than light-duty fuse holders

Installation and fit

This block is meant for single-fuse protection on a high-current branch or feed. It works best where the cable run can reach the studs without a hard bend and where there is enough room to remove the cover for service. The published torque values of 110 in-lb at the terminal and 120 in-lb at the stud are useful when you want a firm connection without over-tightening the hardware.

For a boat refit or a new DC installation, this is a straightforward way to add overcurrent protection near the power source while keeping the fuse enclosed. The covered layout is easier to live with in service areas where exposed fuse studs would be a poor fit.

Materials and construction

The base is reinforced PBT, the cover is polycarbonate, and the fuse studs are stainless steel. That combination makes sense in marine electrical spaces where heat, vibration, and corrosion are part of normal use. The insert-molded studs also help the fuse sit firmly in place during installation and later maintenance.

Use on board

This fuse block suits owners, yards, and marine electricians working on boats with a single high-current DC circuit that needs MEGA or AMG fuse protection. It is especially useful when the goal is a covered fuse connection that stays accessible for inspection and fuse changes without adding a larger multi-circuit block.

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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