Determining the maximum permissible control cable lenghts and measures to countract excessive cable capacitance

The contactor is the most important switching device in industrial and commercial applications. Its importance has further increased due to the influence of automation. This has given rise to some significant advancements in the development of contactors, of which the user is often not aware. For example, the power required for switching has been considerably reduced in recent years due to the use of integrated actuation electronics.