What types of circuit breakers (CBs) are used in the Embraer Regional Jet systems?

In the Embraer Regional Jet (ERJ) systems, both thermal and electronic circuit breakers are utilized. Thermal circuit breakers function on the principle of temperature increase linked to electrical current flow; as the current exceeds a certain threshold, the heat generated trips the circuit, effectively protecting the electrical systems from overloads. These are traditionally used in many aircraft systems due to their reliability and simplicity.

On the other hand, electronic circuit breakers offer advantages in terms of precision, responsiveness, and monitoring capabilities. They can provide more complex functionality, such as remote reporting and diagnostics, allowing for enhanced maintenance and operational efficiency. The combination of both types in the ERJ systems allows for a well-rounded approach to circuit protection, accommodating the diverse electrical needs of the aircraft systems while ensuring safety and reliability.

This mixed usage is beneficial because it harnesses the strengths of each type of circuit breaker, creating a more robust electrical system.