Grinders and polishers with overload protection

Motor protection

— a safety system that turns off the tool when the load on it increases critically. The specific way in which such protection works may vary. For example, in some models, it turns off the engine with a sharp increase in the load on the working nozzle — for example, when the disc is jammed in the material; this avoids sharp jerks of the tool, its breakage, disc destruction and other unpleasant consequences. In other models, the protection reacts to overheating or a critical excess of current. There are also tools that combine both of these options.