Narva 54425BL - Add-A-Circuit Twin Micro 3 Blade Fuse Holder

Narva • Micro 3 triple-blade format • Add-a-circuit piggyback adaptor • Suits 12V and 24V systems

Product Overview

Narva 54425BL lets you add a fused accessory to a late-model vehicle that uses Micro 3 fuses, without cutting factory wiring. The adaptor plugs into a Micro 3 slot and provides two fuse positions - one to retain protection for the original circuit and another to protect your new accessory branch. It is a neat, reversible way to power dash cams, GPS units, telemetry modules and other small accessories.

Key Features

  • Twin fuse design retains the OEM circuit and adds a separately fused accessory branch
  • Plugs directly into a Micro 3 fuse slot for tidy, reversible installs
  • Lead tail provided for the accessory feed connection
  • Uses standard Micro 3 fuses so values match OEM conventions
  • Helps maintain wiring integrity on modern vehicles

Technical Specifications

Brand
Narva
Part No.
54425BL
Fuse Format
Micro 3 (triple-blade)
System Voltage
12V and 24V DC
Function
Add-a-circuit piggyback with two fuse positions
Mounting
Plugs into an existing Micro 3 fuse slot
Included
Adaptor with lead tail (fuses supplied separately)
Warranty
12 months

Selection and Installation Notes

  • Use Micro 3 fuses sized for the OEM circuit and for your new accessory. Do not exceed the vehicle fuse slot rating.
  • Identify which fuse position protects the original circuit and which protects the accessory before powering up.
  • Pick ignition-switched or constant feed according to accessory needs and verify with a test light or DMM.
  • Route and secure the lead tail, crimp or solder the join, and insulate with heat-shrink where exposed.

Why Choose Narva 54425BL?

It creates a clean, fused take-off from a Micro 3 panel without cutting the loom. The twin-fuse layout keeps the original circuit protected while adding a dedicated fuse for your accessory, preserving serviceability and electrical integrity.

Model # 54425BL
Barcode # 09314464002717

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What does Narva 54425BL do?
It plugs into a Micro 3 fuse slot and provides two fused paths - one for the original circuit and one for your accessory - so both remain protected.
Which fuse type fits this adaptor?
Micro 3 blade fuses only. Use values specified by the vehicle maker and your accessory requirements.
Can I exceed the original fuse rating to power my accessory?
No. Do not exceed the vehicle slot rating or wiring capacity. Keep the OEM fuse value as specified and size the accessory fuse appropriately.
Will this fit Micro 2, mini or standard blade panels?
No. This model is for Micro 3 triple-blade slots only. Use the correct adaptor type for other footprints.
Does orientation matter when inserting the adaptor?
Yes. Follow the diagram on the adaptor and confirm which position protects the OEM circuit versus the accessory before energising.
Is it suitable for ignition-switched and constant feeds?
Yes. Choose a slot that behaves as required for your accessory and verify with a test light or DMM before final wiring.
Do I need to cut factory wiring to install it?
No. Installation is reversible and requires no cutting of factory looms.
What fuse values are commonly used with 54425BL?
Typical Micro 3 values include 5A, 10A and 15A. Always follow OEM specs and accessory current draw.
Any tips to avoid parasitic drain after installation?
Choose an ignition-switched slot for accessories that should not run when parked, and size both fuses correctly.
What is the warranty period for 54425BL?
12 months.

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