Is there a fuse in an isolator switch?

An isolator switch typically does not contain a fuse; its primary function is to provide a means of disconnecting electrical circuits for safety and maintenance. Isolators are designed to handle high voltage and current, ensuring that the circuit can be safely de-energized. Fuses, on the other hand, are protective devices that interrupt the circuit in case of an overload or short circuit. While they can be used in conjunction, they serve different purposes.