Resetting a tripped switch is safe. Opening the cover is not
Safe to do
Reset a tripped switch, once. Identify which circuit it controls. Turn a circuit off deliberately before changing a light fitting.
Not safe
Removing the cover, replacing anything, or resetting the same switch repeatedly. A switch that trips twice is telling you something.
What repeated tripping means
A genuine fault somewhere on that circuit. Unplug everything on it and reset once. If it trips with nothing plugged in, stop and call somebody.
