What semiconductor device is used to replace relays and contactors in industrial control applications?

In industrial control applications, solid-state relays (SSRs) are commonly used to replace traditional electromechanical relays and contactors. SSRs utilize semiconductor devices, such as thyristors or transistors, to perform switching functions without moving parts, offering advantages like faster switching speeds, longer lifespan, and reduced electromagnetic interference. They are particularly effective in applications requiring frequent cycling or precise control of high power loads.