What type of switch is a dual source static switch (STS) considered?

A dual source static switch (STS) is classified as a break before make switch due to its operational characteristics. The primary function of an STS is to ensure an uninterrupted power supply by switching between two power sources. In doing so, it temporarily disconnects from one source before establishing a connection to the other. This minimizes the risk of short circuits or overloads that could occur if both sources were connected simultaneously, which is a critical safety measure in power management.

By engaging in a break before make operation, the STS guarantees that there is no overlap in the power sources, allowing for a seamless transition without the risk of clashing. This characteristic is essential in data centers and critical infrastructure where maintaining power integrity is crucial for operations.

In contrast, other types of switches, such as make before break switches, operate by connecting to a new source before disconnecting from the existing one, which is suitable for applications that can tolerate brief interruptions. Understanding the functioning of these switches is vital for anyone working in data center operations, as it directly impacts the reliability of power systems.