Your Philips Coffee Maker switches off automatically after 30 minutes after brewing a coffee. This is for energy and safety purposes.
This is according to the EU regulation, which is applicable for all coffee makers sold in the EU.
If you want your coffee to stay hot longer, Philips offers coffee makers with a thermal jug.
For some models, such as Philips Intense Coffee Makers or Philips Grind & Brew Coffee Makers, you are able to re-program the automatic timer to a maximum of two hours. To do this, please refer to the user manual.