If circuit protective devices open at full-load current, what is the consequence?

When circuit protective devices open at full-load current, the consequence is that the motor will frequently shut down. This occurs because protective devices, such as circuit breakers or fuses, are designed to interrupt the circuit when excessive current flows through them, which could be due to overload, short circuits, or other fault conditions. If the protective devices are set to trip at full-load current, they may activate and cut off power to the motor even during normal operational conditions.

As a result, the motor won't be able to maintain continuous operation, leading to frequent interruptions. This could cause performance issues, affect productivity, and even damage the motor if it repeatedly cycles on and off in a short period. Ensuring that circuit protective devices are appropriately rated for the motor’s full-load current is essential for both operational efficiency and equipment longevity.