Selective automatic overcurrent circuit breakers

Fuse-links, with their advantages, have operational disadvantages that are difficult to accept: when activated, the need for manual replacement, tripping characteristics not adapted to new circuit breakers, impermanence of protective properties due to aging of conductive elements. The selective circuit breaker meets these disadvantages by offering ease of operation of the circuit breaker, high short-circuit resistance and full selectivity for protected standard circuit breakers.