I've made a power switch in the output belt to avoid it from clogging with excess uranium: when the lane is full the power switch will turn off and stop all the centrifuges connected with the first one, so you should put the blueprint with the power switch first and the normal one after.
Be careful on these stack inserters and chest:
CHEST
The stack inserter in this design work with a stack size of 6, if you change this don't choose a divisor of 40 or the inserter on the right will not output uranium 235. (so you can use stack size of 3,6,12,...)
blueprint Centrifuge with power switch
blueprint Centrifuge
Sorry for my terrible english