What device isolates line sections during outages to limit customer disruption?

The line sectionalizer is a device specifically designed to isolate sections of electrical lines during outages. By automatically detecting fault conditions and opening circuits, it limits the extent of outages and minimizes disruption for customers. This device works in conjunction with other protective devices, ensuring that only the affected section of the line is taken out of service while maintaining power to other areas.

In contrast, while a fuse serves as a protective device that can interrupt current flow in the event of an overcurrent, it is usually non-resettable and may not isolate specific line sections as effectively during an outage. A switch, on the other hand, is manually operated and may not respond to faults automatically, potentially leading to longer outages. A transformer is a critical component for voltage conversion but does not function to isolate line sections during outages. The primary role of the line sectionalizer makes it the most suitable choice for minimizing customer disruption during power outages.