What is the primary purpose of XT breakers in an electrical system?

The primary purpose of XT breakers in an electrical system is to isolate switchboards within a single zone. These breakers are designed to provide protection by interrupting the circuit in the event of an overload or fault, thus ensuring the safety and reliability of the electrical system.

By allowing selective isolation, XT breakers enable maintenance or troubleshooting to be performed on a specific section of the electrical distribution network without shutting down the entire system. This targeted isolation helps maintain operational continuity while addressing issues safely.

The other options focus on different functionalities that are not the primary role of XT breakers. For instance, connecting multiple switchboards pertains to distribution and interconnectivity, while providing backup power relates to uninterruptible power supply systems. Enhancing network connectivity usually involves communication protocols and hardware, not circuit protection devices like XT breakers.