Blue Sea 5021 Water Resistant Fuse Holder [5021]

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Regular price: $9.79
Regular price: ~~$10.99~~
Sale price: $9.79

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SKU: CWR-20428 UPC: 632085050214

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Panel-mount fuse holder for marine, RV, and automotive electrical circuits, with an IP66-rated front to help protect against powerful water jets and above-deck spray exposure.

The Blue Sea Systems 5021 installs through a 0.50-inch (12.70 mm) mounting hole and accepts ATO/ATC fuses up to 20A. Its panel-mounted format keeps circuit protection accessible for service in boats, RVs, and vehicle electrical panels. The fuse is sold separately.

IP66-rated front: Helps protect the fuse-holder face against powerful water jets, rain, spray, and washdowns.
Panel-mount installation: Fits a 0.50-inch (12.70 mm) mounting hole for integrated electrical-panel installation.
20A maximum fuse rating: Supports circuit protection for appropriately rated low-current electrical circuits.
ATO/ATC fuse compatibility: Uses commonly available automotive-style blade fuses for straightforward replacement.
Accessible fuse service: The panel-mounted holder keeps the fuse location organized and reachable during electrical maintenance.

The Blue Sea Systems 5021 provides a dedicated fuse location for electrical circuits in marine, RV, and automotive applications. Install it through the specified 0.50-inch panel opening, connect it within the circuit, and fit a compatible ATO/ATC fuse rated appropriately for the protected circuit.

The IP66 rating applies to the front of the holder, helping it handle powerful water jets and common above-deck exposures such as rain, salt spray, and hose washdowns. This makes it suitable for accessible electrical panels where the fuse holder may encounter moisture during normal use.

Use the holder for circuit-protection setups that require a fuse of no more than 20A. Because the fuse is sold separately, select an ATO/ATC fuse that matches the circuit and installation requirements.

Brand	Blue Sea Systems
Model	5021
Product Type	Panel-mount fuse holder
Fuse Type	ATO/ATC
Maximum Fuse Amperage	20A
Front Protection Rating	IP66
Mounting Hole	0.50 in (12.70 mm)
SKU	CWR-20428
UPC	632085050214
Fuse Included	No; sold separately

What type of fuse does this holder use?
It accepts ATO/ATC fuses.
What is the maximum fuse rating?
The holder is rated for fuses up to 20A.
What size mounting hole is required?
Installation requires a 0.50-inch (12.70 mm) mounting hole.
Is the fuse included?
No. The fuse is sold separately.
Where can it be used?
It is suited to panel-mounted electrical protection in marine, RV, and automotive applications, including areas exposed to rain, spray, and washdowns.

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⚠️ California Proposition 65 Warning

⚠️ WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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