Re: What does 30 kA mean?

From	Brian Gregory <void-invalid-dead-dontuse@email.invalid>
Newsgroups	sci.electronics.repair
Subject	Re: What does 30 kA mean?
Date	2026-02-22 16:37 +0000
Organization	https://www.Brian-Gregory.me.uk/
Message-ID	<n00pltFpsq8U1@mid.individual.net> (permalink)
References	<8jejpkh7ukoabt16f2dik5aj2r98l06nva@4ax.com> <0kb*-zNzA@news.chiark.greenend.org.uk>

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On 21/02/2026 16:14, Theo wrote:
> In other words, if you apply more than 11A (or whatever the fuse rating is)
> but less than 30,000 amps the fuse promises to become open circuit.  If you
> apply more than 30kA then there is a risk the fuse blows closed-circuit.

Well. The problem that might occur if the current exceeds 30kA is kind 
of unspecified.

With all good safely made brands of HRC fuse it means the fuse should 
stay intact if the peak current is under 30kA, and exceeding 30kA is 
likely to cause the fuse to explode and potentially damage other parts 
of the equipment it is a part of.

-- 
Brian Gregory (in England).

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What does 30 kA mean? micky <NONONOmisc07@fmguy.com> - 2026-02-21 09:07 -0500
  Re: What does 30 kA mean? Theo <theom+news@chiark.greenend.org.uk> - 2026-02-21 16:14 +0000
    Re: What does 30 kA mean? micky <NONONOmisc07@fmguy.com> - 2026-02-22 09:16 -0500
    Re: What does 30 kA mean? Brian Gregory <void-invalid-dead-dontuse@email.invalid> - 2026-02-22 16:37 +0000
      Re: What does 30 kA mean? liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2026-02-22 19:59 +0000
        Re: What does 30 kA mean? Brian Gregory <void-invalid-dead-dontuse@email.invalid> - 2026-02-27 03:25 +0000
          Re: What does 30 kA mean? liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2026-02-27 09:25 +0000
            Re: What does 30 kA mean? wmartin <wwm@wwmartin.net> - 2026-02-27 13:47 -0800
              Re: What does 30 kA mean? liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2026-02-27 22:25 +0000
                Re: What does 30 kA mean? wmartin <wwm@wwmartin.net> - 2026-02-27 22:15 -0800
  Re: What does 30 kA mean? Jeff Liebermann <jeffl@cruzio.com> - 2026-02-22 11:25 -0800
    Re: What does 30 kA mean? Jeff Liebermann <jeffl@cruzio.com> - 2026-02-22 11:31 -0800

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