Controlling 3 circuit with a single switch?

Hi, i would like to enquire some basic electronic questions.

If i want to control 3 different circuit with a single switch is it possible?

As because i am using 3 different power source for 3 different circuit, I just need a single switch either to turn them off all together or turn them on all together. Is there any recommendation available?

Use a 3-pole 2-position switch (they come as 4 pole two position).

Similar to Colin's recommendation here's a link to a bunch of 3PST (3 pole, single throw) switches:

Toggle Switches

A 3PDT or 4PDT would work for you too, you'd just have a few extra/unnecessary connections.

This picture shows basically what's going on inside a 3PST switch:



I don't know how much current the circuits you are tunring on will draw. Most of these switchs will carry 15A or more.

If you want to do it Electronically (Pic output) and the voltage and amps are low you could use a CD 4066; https://www.fairchildsemi.com/ds/CD/CD4066BC.pdf

Thanks all dude for the recommendation..Deeply appreciated it.. Thank You =)