Q: Why does my iPad 3 random ally switch off

Hi Robyn,
 

Thank you for contributing to the Apple Support Communities.
 

If your iPad 3 keeps turning off unexpectedly, first make sure that it's charging fully. You can go through the tips in Charge the battery in your iPad and If you can’t charge your iPhone, iPad, or iPod touch.
 

Next, I recommend the advice from If your iOS device restarts or displays the Apple logo unexpectedly:
 

Make sure that your device is up to date and your apps are up to date. If you still need help after updating, contact Apple Support.

Learn what to do if your device won't start up past the Apple logo or doesn't respond.

Sincerely.