How are Form Z contacts generally characterized?

Form Z contacts are specifically characterized by having four external connections. This characteristic distinguishes them from other contact forms. The four external connections facilitate the operation of the devices they are integrated into, allowing for a more complex interaction than contacts with fewer connections.

In contrast, other forms of contacts may have a different number of external connections or functionality. For instance, Form B contacts typically have one external connection per pole and are simplified in their design, highlighting how Form Z contacts provide enhanced functionality suitable for specific applications. Thus, the identification of Form Z contacts with four external connections is paramount for understanding their design and application in electrical systems.