A solid-state relay (SSR) is an electronic switching device that uses semiconductor components to switch on or off when a small external voltage is applied across its control terminals. Unlike electromechanical relays, SSRs have no moving parts, offering higher reliability, faster switching speeds, and longer operational life.

Solid-State Relay

solid-state relay

electronic switching device

semiconductor components

switch on

Switch off

external voltage

control terminals

electromechanical relays

moving parts

higher reliability

faster switching speeds

longer operational life

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