What is knife switch?

A knife switch is a type of electrical switch that consists of a metal blade, called a knife, which is attached to a handle. The blade can be moved between two positions, either making or breaking the electrical connection between two contact points.

Knife switches are commonly used in electrical circuits to manually control the flow of electricity. They are typically found in older electrical systems and are often used for safety reasons, as they provide a clear visual indication of whether the circuit is open or closed.

Knife switches are available in various sizes and configurations, ranging from small switches for low voltage applications to larger switches that can handle higher currents. They are typically made of metal, such as brass or copper, to provide good conductivity and durability.

While knife switches are simple and reliable, they are not commonly used in modern electrical systems due to the availability of more advanced and automated switch options. However, they are still used in some applications where a manual switch is preferred or required.