One cause for a blown fuse (or tripped breaker) is an overloaded circuit. For example, when you turn on your microwave, coffee pot, and toaster at the same time, the breaker trips.
The outlets in most modern kitchens are divided into two circuits, each rated at 20 amps. Try moving one or two of the appliances to the other side of the kitchen, to the other circuit.
Also, see the related tip categories of MICROWAVES, and That Funny Outlet With The Reset Button.