Narva 54406BL - In-line Waterproof Blade Fuse Holder

Narva • In-line waterproof holder • Suits standard blade fuses (ATO/ATC) • 32V DC

Product Overview

The Narva 54406BL is a rugged, in-line waterproof blade fuse holder designed for accessory protection on 12V and 24V systems. It accepts common ATO/ATC fuses and features a sealed, tethered cap to help keep out moisture and grime, making it a solid choice for engine bay, marine and off-road applications. Mount close to the power source so the full downstream cable run is protected.

Key Features

  • Waterproof capped design helps protect the fuse from moisture and dirt
  • Suits standard blade fuses for easy serviceability
  • Pre-wired tails for quick, tidy in-line installation
  • Low resistance connections for reliable performance
  • Ideal for lights, fridges, pumps and auxiliary power feeds

Technical Specifications

Brand
Narva
Part Number
54406BL
Holder Type
In-line waterproof standard blade fuse holder
Fuse Compatibility
Standard blade fuses (ATO/ATC)
Maximum Fuse Rating
Up to 30A
Voltage Rating
32V DC
Environmental
Sealed cap, splash resistant
Leads
Pre-wired tails, ready to splice
Mounting
In-line, secure with cable ties or clips
Pack Quantity
1
Warranty
12 months

Selection and Fitment Tips

  • Fuse size: Use only standard ATO/ATC blade fuses. Not for mini or micro blade formats.
  • Placement: Install near the battery or feed so the entire downstream cable is protected.
  • Wiring: Use quality crimp or solder joins with heat shrink for moisture resistance and strain relief.
  • Troubleshooting: If fuses operate repeatedly, diagnose overloads or wiring faults rather than increasing fuse value.

Why Choose Narva 54406BL?

It combines the convenience of common ATO/ATC fuses with a sealed, durable holder that stands up to wet and dirty environments. Pre-wired tails and a compact body keep installs clean and reliable.

Model # 54406BL
Barcode # 09314464544064

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What fuse type does Narva 54406BL accept?
Standard blade fuses (ATO/ATC). It does not accept mini or micro blade fuses.
Is the holder waterproof?
It features a sealed, tethered cap for water and splash resistance suited to engine bay, marine and off-road use.
What is the maximum fuse rating supported?
Up to 30A, provided the connected cable and accessory are sized appropriately.
Is it suitable for 12V and 24V systems?
Yes. The holder is rated 32V DC and suits both 12V and 24V circuits.
How do I install the holder in-line with my loom?
Cut the positive feed, splice the pre-wired tails using quality crimps or solder, then heat shrink for moisture resistance and strain relief.
Where should I mount it for best protection?
As close to the battery or power source as practical so the entire downstream cable run is protected from shorts.
What fuse value should I choose for my accessory?
Match the fuse to the smallest cable in the circuit and the accessory’s current draw. Do not exceed the cable’s continuous ampacity.
Can I mount the holder in the engine bay or exposed areas?
Yes. Place away from direct heat and moving parts, and secure the loom to prevent vibration damage.
What should I check if fuses keep blowing in this holder?
Inspect for shorts to ground, damaged insulation, undersized cable or an overcurrent accessory. Do not upsize the fuse to mask a fault.
What is included and what is the warranty period?
One in-line waterproof standard blade fuse holder with sealed cap and pre-wired tails. Warranty is 12 months.

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