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Internal Fast Blow SuperFuse

5 out of 5
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  • Replacement 20mm (internal) fast blow fuse (slow blow fuses are available here)

  • Features a specially-developed version of our Super Burn In treatment

  • Available in a range of values from 100mA to 6.3A

  • Includes DeoxIT Gold wipe for treating end caps before fitting

  • Supplied as a single fuse

  • The Russ Andrews 20mm fast blow SuperFuse™ is a replacement internal fuse designed to replace fuses in equipment. They feature a specially-developed version of our unique Super Burn In process. The SuperFuses are supplied with a DeoxIT™ Gold wipe for treatment just before fitting.

    Available in a range of values, you should always replace an existing internal fuse with a SuperFuse of the same value and type.

    Read our Guide to SuperFuses

    What's included

    Single 20mm internal fast blow SuperFuse, DeoxIT Gold wipe, 'Fitted with SuperFuse' label, instructions, protective pouch.

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    Buying Guide


    Russ Andrews specification 20mm internal fast blow fuses
    Unique Super Burn In treatment
    Length: 20mm Diameter: 5mm
    Glass body
    Supplied with DeoxIT Gold wipe
    Excluded from our Lifetime Warranty

    "the cost is actually lower than many other audiophile fuses and does result in tangible sonic benefits.”
    Read more about the Hi-Fi Choice review here

    60 Day Money Back Guarantee
    SuperFuses are covered by our 60 Day Money Back Guarantee: audition them in your own system for two months. Find out more.
    Customer Reviews
    Overall product rating 5 / 5
    5 / 5

    reviewed by John Bainbridge
    16 Jul 2016
    Yes, I recommend this product.
    "Internal Fast Blow Superfuse"
    I have a number of Russ' standard Super Fuses in use and can confirm these smaller, internal fuses work just as well. Is £25 a lot for a fuse? Well yes it is. Is it a lot for the extra clarity and reduced distortion that results? I think not! In fact I think it's a something of a bargain so, treat yourself today.