|A solid state relay switch is a
control relay with isolated input and output, whose functions are
achieved by means of electronic components without the use of
moving parts such as those found in electromechanical relays. These
electronic relays are ideal for applications with many contact
closures since solid state relay switches offer a greatly extended
life compared to electromechanical relays.
Solid state relays (SSR) are similar to electromechanical relays, in that both use a control circuit and a separate circuit for switching the load. When voltage is applied to the input of the SSR, the relay switch is energized by a light emitting diode. The light from the diode is beamed into a light sensitive semiconductor which, in the case of zero voltage crossover control relays, conditions the control circuit to turn on the output of the solid state relay switch at the next zero voltage crossover.
Solid state relays have advantages which electromechanical relays do not, such as:
Socket Mount Solid State Relay (AD-70S2 Series) & Socket
- AD-70S2 Series Solid State Relays
AD-70S2-04C - Solid State Plug-in Relay 4A 24-280VAC - $20.50
AD-70S2-04D - Solid State Plug-in Relay 4A 8-50VAC - $20.50
782-2C-SKT - DIN-rail socket for 782 and AD-70S2 series relays - $4.00
Solid State Relays Overview