Question

Heavy duty relays are not suitable as switching relays because they have?

1) Low voltage rating
2) Slow switching speed
3) Limited number of switching cycles
4) High cost

Answer 1

Heavy duty relays are not suitable as switching relays because they have a limited number of switching cycles.

Step-by-step explanation:

Heavy duty relays are not suitable as switching relays because they have limited number of switching cycles. These relays are designed for use in high-power applications, where they can handle large current loads. However, the continuous switching of these heavy loads can cause the contacts of the relay to wear out quickly, leading to a limited number of switching cycles. In comparison, switching relays are designed to handle frequent on/off operations with a higher number of switching cycles.