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Power switch specifications/ratings
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Tim Schwartz
Sep 6, 2016, 10:53:16 PM9/6/16
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Hello all,
Can anyone point me to an 'official' table or chart about switch
ratings, such as what is the difference between a TV3, TV4 and TV5
marking on the switch?
Many thanks,
Tim Schwartz
Bristol Electronics
Can anyone point me to an 'official' table or chart about switch
ratings, such as what is the difference between a TV3, TV4 and TV5
marking on the switch?
Many thanks,
Tim Schwartz
Bristol Electronics
Tim Schwartz
Sep 8, 2016, 9:04:58 AM9/8/16
to
same question to came up with this link from Alps:
http://www.alps.com/prod/info/E/PDF/Switch/Power/SAFETY.PDF
The 3rd page has what I was looking for. Hope others find this useful too.
Regards,
Tim Schwartz
Bristol Electronics
Phil Allison
Sep 13, 2016, 10:26:12 PM9/13/16
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Tim Schwartz wrote:
>
> Well, here I am answering my own question. A friend I had e-mail the
> same question to came up with this link from Alps:
>
> http://www.alps.com/prod/info/E/PDF/Switch/Power/SAFETY.PDF
>
> The 3rd page has what I was looking for.
>
** Fraid that page is highly misleading about what TV ratings mean.
>
> Well, here I am answering my own question. A friend I had e-mail the
> same question to came up with this link from Alps:
>
> http://www.alps.com/prod/info/E/PDF/Switch/Power/SAFETY.PDF
>
> The 3rd page has what I was looking for.
>
The "TV" code is used by UL to identify switches that have a very high inrush surge current, endurance and fire safety performance. Such switches are suited to large halogen lamp loads and devices with large iron transformers.
Typical codes are TV5, TV8 or TV10 where the number refers to the steady rms on current for 25,000 operations with over 100Amp surges.
See link for useful examples:
http://www.nkkswitches.com/pdf/JP.pdf
.... Phil
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