What is an isolation switch used for?

An isolation switch is specifically designed to disconnect a circuit from its power source, providing a safe means for maintenance and servicing of electrical equipment. When an isolation switch is operated, it ensures that there is no live electrical supply present, allowing workers to perform their tasks without the risk of electric shock or equipment damage. This is critical in ensuring safety during maintenance procedures, as it helps prevent accidental energizing of circuits.

While other functions like increasing voltage or controlling energy flow are important in different contexts, those are not the primary purpose of an isolation switch. Its main role is to facilitate maintenance and ensure safety by creating a clear disconnection from the electrical supply.