I have so many holes in my knowledge, so once again, here is my basic electrical question.

When choosing a toggle switch and looking at the specifications I know I don't want to pick one that rated too low for my power requirements, but can I pick one that has high requirements?

I am wanting an external power switch (think my project in a box) that can withstand a 4yr turning it off and on, so I thinking of getting this one:

http://www.radioshack.com/product/index.jsp?productId=2062494

It is rated Rated 3 amps at 125VAC. Since my power is a 9v battery, I know for sure I am under that rating :) BUT will I have issues that the switch because my power is soo low compared to the requirements? Will the switch cause me issues or anything?

If the switch will causes issues, or you have better ideas, please let me know.

Thanks.

Those are just maximums. 3A is to keep it from melting with too much current, and 125V is to keep it from arcing between contacts. You can use it as a low-power switch.

Cool, thank you.

Any suggestions on good sites or books to help with my basic knowledge more?

http://www.allaboutcircuits.com

BM

Thanks BobaMosfet, I have been on that site, I didn't realize all it had though.

Scott