It is SOP with Easyjet not to reset any cb's without consulting maintenance (unless it is allowed per QRH procedure). The airbus is so filled with computers, that it is impossible to see through the problem with a pilots eyes, and something popping in one place might be connected to a very different problem somewhere else.
Furthermore, maintenance is keeping a tight record on every little bit that fails, and over time they can with this spot trends and sometimes prevent problems from arising before they are apparent by doing this.
It takes time and is no fun for those, who wish to run the whole flight deck singlehanded, but it works, it's safe and it is the culture here. If it is safety related, (as any fault or popped cb potentially can be) then time is not a factor in Easyjets operation.