Because of the reliablity of the internet, some VPN connections now and then come up with an error. In the ordinary course when this happens you will stay connected with the web – however without the security of the VPN.
An off button secures you against this by forestalling associations into and out of your gadget except if the VPN association is dynamic.
A Kill Switch is made for the occasions that your connection’s IP-address is for some reason leaking. The kill switch just kills you internetconnection when it detects the IP is being leaked.