Electrical switchgear refers to a centralised collection of circuit breakers, fuses and switches (circuit protection devices) that function to protect, control and isolate electrical equipment. It helps the appliances run in a streamlined manner and protects them from short-circuit damages.
The circuit breaker encased in the switchgear interrupts the current by tripping automatically in the event of an overload or any type of fault in the system. It detects the fault through a protection relay and triggers before damage can occur.
Switchgear is commonly found throughout electric utility transmission and distribution systems as well as in medium to large sized commercial or industrial facilities.