Two protective devices used to protect cables against overcurrent
1. Fuse: A fuse is a protective device that is designed to break the circuit in the event of overcurrent. When the current flowing through the fuse exceeds its rated value, the fuse element inside melts, interrupting the flow of current and protecting the cable from damage.
2. Circuit breaker: A circuit breaker is an electrical switch that automatically trips and opens the circuit when the current exceeds a certain threshold. When there is an overcurrent condition, the circuit breaker detects it and quickly interrupts the circuit, preventing the cable from being damaged. Circuit breakers can be manually reset after tripping.