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Question
What is the difference between phototriac and photocoupler isolation for the G3NA Solid-state Relay?
Answer
The applicable output load voltage range is different.
Solid-state Relays with a zero cross function using a photocoupler can operate with a small input current because they have very good coupler transmission efficiency.
Photocoupler Input Current < Phototriac Input Current
The input current for a phototriac is greater than that for a photocoupler, but that doesn't necessarily mean it must be a selection criteria for the type of Solid-state Relays. Other parameters can be used as a basis for selection.
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