32V fuses were typically used on the low voltage circuits of the Data
General computers, where I once was a support engineer. Appears to me as a
typical USA standard low voltage fuse, not to be used in higher voltages
like 110 V in the USA, or even the 230 - V in Europe....
Cheers,
Hans
71 BGT
----- Original Message -----
From: "Paul Hunt" <paul.hunt1@blueyonder.co.uk>
To: "Steven Trovato" <strovato@optonline.net>
Cc: <mgs@autox.team.net>
Sent: Friday, October 08, 2010 10:13 AM
Subject: Re: [Mgs] Fuses
> Perfectly understandable, but the fuse wire in these is over an inch long,
> even 20kV or so from the ignition coil couldn't jump the end caps or even
> keep an arc going. I've got fuses labelled 250v which are less than half
> that length. The lowest voltage quoted on that site is 125 volts (and the
> others are all round numbers), also quite reasonable. 32 volts is a
> ridiculously low voltage to quote for those fuses, as well as being a very
> odd value. Blade fuses have the same rating even though the spades are
> much closer together. It seems to me that someone has labelled all
> automotive fuses as '32 volt' which is perhaps nothing more than a typical
> maximum of 24v plus a safety factor, without any regard to what they are
> actually safe at. None of my fuses show a voltage rating, only a current
> rating. The upshot is that you can fit any fuse of the correct physical
> dimensions *and current rating* regardless of its notional voltage rating.
>
> PaulH.
>
> ----- Original Message -----
>> The voltage rating of the fuse must be greater than or equal to the
>> circuit voltage. Because the fuse has such low resistance, the voltage
>> rating becomes critical only when the fuse is trying to open. The fuse
>> must be able to open quickly, extinguish the arc after the fuse element
>> has melted and prevent the system open-circuit voltage from restriking
>> across the open fuse element.
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