End Stop to Power off printer

I use Octoprint to make my Rapide Lite 200 wireless. But i need a way to shutdown my printer when not at home.

I created a End Stop holder and bought a End Stop switch and placed it to the side of my Rapide Lite.

I bought this: http://bit.ly/145eNPy
Its a microswitch connected through COM and NC. This means, that when the switch is made it cuts the power through the circuit. When i run my X-axis to the max distance of the print bed (~195 mm from the home position) the switches wheel hit