Hull "TRIPS OUT"
try unplugging all the electrical appliences & them reseting the trip / mcb, then try plugging them back in one at a time & switching them on. This will show you if you have a defective item. If they all come on successfully then it may be at peak load on all items the load is too high for the trip.
Tis may have to be replaced with the next amperage up, or to a higher rating A being the lowest & D the highest.
Otherwise consult your local electrical engineer.

Skipy