Toggle Switch....Please HELP

[Mustang]

I must admit I should know the answer to this question.... I have a
Miniture Toggle Switch with the following rating: 5A 120V AC, 28V DC,
2A 250V AC Is the switch rated for 5A @ 28V DC? What is that rating
for a 12V DC application? Do you use OHMS Law?

Thanks,

 

[Peter Bennett]

On 17 Feb 2004 20:04:59 -0800, tware@acsol.net (Mustang) wrote:

I must admit I should know the answer to this question.... I have a
Miniture Toggle Switch with the following rating: 5A 120V AC, 28V DC,
2A 250V AC Is the switch rated for 5A @ 28V DC?

Yes.

What is that rating
for a 12V DC application?

5A

Do you use OHMS Law?

No.

The voltage rating is the maximum voltage that the switch contacts can
safely break. It is harder to switch off a DC circuit, so the DC
rating is lower than the AC.

The current rating is the maximum current that the contacts can safely
handle without overheating.

There is some relationship between switch-off-ability, voltage and
current that requires the lower current rating for 250 VAC.


--
Peter Bennett VE7CEI
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