What type of switch must handheld power tools be equipped with?

Handheld power tools must be equipped with a pressure switch, which is designed to operate the tool only when a user applies pressure upon it. This feature enhances safety by ensuring that the tool remains off when not actively engaged, reducing the risk of accidental starts.

When a user grips the tool and applies pressure, the switch activates the power, allowing for better control and minimizing hazards. This mechanism is particularly important in preventing injuries that could occur if a tool were to start unexpectedly when handling or setting it down.

Other types of switches, such as backup, emergency, and safety switches, serve different purposes or are not typically standard for handheld power tools. For instance, an emergency switch might cut off power in dangerous situations but does not regulate the tool's ordinary operation. Thus, the pressure switch is the most appropriate and effective type for ensuring safe usage of handheld power tools.