Which component of a motor driven timer is most likely to fail first?

In motor-driven timers, the component that is most likely to fail first is typically the switches. This is because switches are responsible for controlling the flow of electricity in the circuit and are subject to wear and tear due to repeated mechanical usage over time. They can become unreliable as they may accumulate dirt or corrosion or experience physical damage from the actuating forces of the motor over extended operation.

While motors, gears, and power supplies can also experience failures, the switches are more vulnerable to failure due to their role in the operational mechanism and the frequency with which they are engaged during timer cycles. Over time, they may develop issues like contact welding, pitting, or failure to make a proper connection, leading to a malfunction before other more robust components show signs of wear.