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« 1 2 (3)

Re: Cut off switch for 6v positive ground?
#21
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Moms 54
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So what I ordered is a good thing?
When I noticed about the silver I figured that would be more accesble for oxidizing.

I figured it being mounted in the engine bay area, it would be a better choice.

Posted on: 2016/11/9 21:03
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Re: Cut off switch for 6v positive ground?
#22
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HH56
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So what I ordered is a good thing?

I would not hesitate to use it. I don't have prices but as a rule, silver contacts are considered a premium offering. I would not be surprised if it cost a bit more than the bare copper or brass terminal.

Posted on: 2016/11/10 12:09
Howard
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Re: Cut off switch for 6v positive ground?
#23
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Moms 54
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It sure is a heavy duty switch, the studs are brass so if there is silver contacts they must be sealed inside, or the switch is a different part number in the box.
But that's ok if it is, it was only a dollar difference.

Posted on: 2016/11/11 11:26
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Re: Cut off switch for 6v positive ground?
#24
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HH56
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Quote:

Moms 54 wrote:
It sure is a heavy duty switch, the studs are brass so if there is silver contacts they must be sealed inside, or the switch is a different part number in the box.
But that's ok if it is, it was only a dollar difference.


The silver is inside. Here is a photo of a silver plated contact from a relay type unit. You can see the base metal where the wires screw on is copper or brass while the round part which is the actual contact point is plated in silver. The part which actually touches that round portion to complete the circuit would usually be plated in silver too.

Gold is the best conductor and won't tarnish. Some contacts on really high end or critical pieces are plated in gold. Silver comes next and then there are a couple of other specialty metals which have characteristics favorable for certain uses which are also used.

Attach file:



jpg  (9.82 KB)
209_5825fc8711c5d.jpg 335X336 px

Posted on: 2016/11/11 12:14
Howard
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Re: Cut off switch for 6v positive ground?
#25
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Moms 54
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Gotcha,
In my mind I pictured it different, like a flat blade that turns with the knob making contact with heads on the studs.

It wasn't too bad in price about $41 and some change with tax.

I'll make a bracket and install it after my hospital stay.

Posted on: 2016/11/11 14:23
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Re: Cut off switch for 6v positive ground?
#26
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HH56
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You described yours perfectly. As I said, that picture is of a relay or motor contactor terminal and was just to show the silver plating was only on the round working part.

Posted on: 2016/11/11 14:58
Howard
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