Blue Sea Systems Panel Mount AGC/MDL Fuse Holder, 20A, IP66 Front

Overview

The Blue Sea Systems 5021 is a water-resistant panel-mount AGC/MDL fuse holder for circuits that use glass fuses. It accepts fuse ratings up to 20A, the front face is rated IP66, and it installs in a 0.50 in. (12.7 mm) mounting hole.

This holder works well where the front of the panel sees spray, rain, or washdowns and you still want quick access to the fuse. It is also used as a direct replacement for fuse holders found in Contura Waterproof Fuse Panels, which makes it a practical match for repairs or panel refresh work on boats with existing Blue Sea panel layouts.

Key features

• Fits AGC and MDL glass fuses
• Maximum fuse rating of 20A
• Panel-mount design for a 0.50 in. (12.7 mm) cutout
• Front face rated IP66 for protection against heavy spray and washdowns
• Handles above-deck exposure such as salt spray, rain, hose washdowns, and momentary immersion
• Direct replacement for fuse holders used in Contura Waterproof Fuse Panels
• Fuse is sold separately

Compatibility and fit

This is the right style of holder when your panel uses AGC or MDL glass fuses rather than blade fuses. The 20A maximum matters when you are matching the holder to the circuit and fuse size already specified for the wiring.

For retrofit work, the key checks are the fuse family and the panel cutout. If your panel already uses this Blue Sea holder format or a 1/2 in. mounting hole, this part keeps the installation straightforward without changing the panel layout.

Installation and use on board

The panel-mount format keeps the fuse accessible from the front, which is useful at the helm, on switch panels, and in other exposed control areas where you may need to inspect or replace a fuse without pulling the panel apart. The cap opens easily, so routine fuse service is simpler in tight spaces.

This holder makes sense for boaters who need front-access fuse protection in places that see regular weather and washdown exposure. It is a strong fit for small DC circuits on coastal boats, center consoles, sailboats, and working panels that stay out in the open.

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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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