Candy cs455 m dishwasher tripping out power

not familar with this specific model, but you may have a bad heating element the heat portion of the wash cycle usually turns on about half way through if it has an exposed element take a good look at it see if you see any unusual marks on it or open areas, you other then that you would have to check it from under the unit useing a multimeter to check continuity and for grounds.

if what you mean is that it trips the circut or fuse in your home then the circut that you have it pluged into is not sufficent to hold for the elctrical load that the dishwasher needs. you can do one of two things. change the circut that the dishwasher is on ( plug it into a circut that has nothing else on it or verfiy that the circut can handle a higher amperage .. if thats the case change the fuse / circut breaker to a higher amperage.

peace ... jk