Disconnect switches are typically used for what purpose?

Disconnect switches play a crucial role in electrical systems, primarily used to isolate lines and equipment for maintenance. This isolation is essential for ensuring the safety of maintenance personnel, as it provides a way to remove power from specific sections of electrical circuits, allowing for safe inspection, repairs, or upgrades without the risk of accidental energization.

When a disconnect switch is opened, it physically breaks the circuit, effectively disconnecting the equipment from the power source. This is vital in protecting workers from potential electrical hazards while they perform maintenance tasks. The switch can often be operated manually or with a lever, ensuring reliable performance in various conditions.

In contrast, while disconnect switches serve to isolate power, they do not control voltage levels or measure current flow. These functions are typically handled by different components within the electrical system, such as transformers for voltage regulation or ammeters for measuring current. Thus, the primary and most critical function of a disconnect switch remains its ability to allow safe maintenance by fully isolating electrical equipment from energy sources.