Which safety benefit does a limit switch provide?

• A. Prevents over-travel and stops motion to avoid damage or injury.
• B. Increases speed of motion.
• C. Provides remote monitoring via wireless signals.
• D. Improves battery efficiency.

Answer: (A)

Limit switches provide a safety function by detecting when a moving part reaches a defined position and stopping motion to prevent over-travel. When triggered, they signal the control system or cut power to the actuator, stopping the machine before it can collide, jam, or exert damaging forces, protecting both the equipment and the operator. They aren’t about increasing speed, enabling wireless monitoring, or improving battery efficiency, which aren’t related to this protective stop.