By Li Sheng | 07 April 2020 | 0 Comments
Solid-state Relay: DC Load and AC Load
Question
Can a DC load be used with Solid-state Relays for AC loads?
Answer
No, it cannot be used. The component characteristics of Solid-state Relays will not allow it to reset if a DC load is used.
Explanation
Solid-state Relays for AC load switching use thyristors and triacs as output components. By turning Solid-state Relays input ON, the output can be turned ON, but simply turning the input OFF doesn't mean that the output will be turned OFF. This is because Solid-state Relays have a characteristic that it stays turned ON until the load current becomes zero regardless of the absence of input signals into Solid-state Relays.
The DC current will never become zero, therefore it will not be reset.
Can a DC load be used with Solid-state Relays for AC loads?
Answer
No, it cannot be used. The component characteristics of Solid-state Relays will not allow it to reset if a DC load is used.
Explanation
Solid-state Relays for AC load switching use thyristors and triacs as output components. By turning Solid-state Relays input ON, the output can be turned ON, but simply turning the input OFF doesn't mean that the output will be turned OFF. This is because Solid-state Relays have a characteristic that it stays turned ON until the load current becomes zero regardless of the absence of input signals into Solid-state Relays.
The DC current will never become zero, therefore it will not be reset.
Our solid state relays:
DIN Rail Mount 1 ~ 8 Channel 8 / 12 Amp Solid State Relay SSR Module, in 4~32VDC, out 100~240VAC.
DIN Rail Mount 1 ~ 8 Channel 8 / 12 Amp Solid State Relay SSR Module, in 4~32VDC, out 100~240VAC.
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