Answer
A Main Linked Switch is an essential component in electrical systems, primarily designed to isolate electrical circuits. Located in consumer units or fuse boxes, it disconnects the flow of electricity by cutting off both the Line and Neutral conductors. This switch is particularly important for safety, as it allows for the entire electrical installation to be isolated during maintenance or emergencies. Some installations may also have an external main switch, often called an isolator, which is useful when working on the system. This ensures no power is supplied to any parts of the building, preventing accidents.
More information is available in our article on the Main Linked Switch.