What is one of the characteristics of an over-current device?

One of the key characteristics of an over-current device is its function to disconnect the circuit when the current exceeds a specified level. This mechanism is crucial for protecting electrical systems from damage caused by excess current, which can occur due to a short circuit, overload, or other faults. By interrupting the flow of electricity, the device prevents potential hazards such as equipment failure, electrical fires, or other dangerous situations.

Over-current protection devices, such as circuit breakers or fuses, are designed to detect these high current levels and respond rapidly to mitigate risk. This characteristic is essential for maintaining safety and reliability in both residential and commercial electrical systems.