Time Capsule backups
My time machine backs up two iMacs to a Time Capsule. In case of a fire, could I just grab the time Time Capsule itself? (I think I know the answer, but I'm being super cautious.)
Earlier Mac models
Yes, you can certainly just grab your Time Capsule.
However, if your data is critical to you, you should not rely on just your Time Capsule, but also use additional backup methods.
The following is a user tip article, that I authored. Use it as you may to see if it can help.