Blue Sea 5022 Panel Mount AGC/MDL Fuse Holder Replacement Cap

The Blue Sea 5022 Panel Mount AGC/MDL Fuse Holder Replacement Cap is the OEM replacement cap designed specifically for the Blue Sea Systems 5021 panel mount fuse holder. This small but essential component maintains the integrity and functionality of 12-volt DC electrical systems in marine, RV, automotive, and off-grid applications where reliable power distribution is critical to mission success.

The 5022 cap accommodates standard AGC and MDL fuse types, which are the most common panel-mount electrical protection standards in the 12V marine and automotive sectors. A protective cap prevents dust, corrosion, and accidental contact with live fuse terminals—particularly important in salt-air environments where oxidation can degrade electrical connections and create intermittent faults. This replacement is manufactured to Blue Sea Systems' original specifications, ensuring proper fit, secure sealing, and compatibility with the 5021 base unit.

Users who maintain their own electrical systems—whether on patrol vessels, remote cabins, emergency response vehicles, or off-grid power installations—benefit from having replacement caps on hand. A damaged or missing cap can expose critical circuits to environmental contamination, creating safety hazards and reducing system uptime. The lightweight design and compact form factor make it practical to stock multiple spares without impacting weight or space budgets.

Blue Sea Systems is the established standard for marine electrical distribution and has maintained a reputation for reliability in high-demand environments. This replacement cap carries the same build quality as the original equipment, ensuring long service life and consistent protection for your 12V electrical circuits.