How would this relay behave if use it for DC voltage on pin 1-2?

 

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How would this relay behave if use it for DC voltage on pin 1-2?

The most likely outcome is that you will be able to energize whatever device you've connected to it, but you will be unable to switch it off. Those relays normally use a Triac or a couple of back-to-back SCR's, which can be switched on by applying a current at their gates, but the only way to switch them off is by effectively disconnecting the load, which happens every time the AC wave crosses 0V. And that's a condition that DC by definition cannot meet.

What's the load type that you want to control, and its rated voltage/current?

 

Thanks, thats a good explanation.

 

Hello,

As said, it might not fall off.
An other possibility is that it will do nothing at all.
It has a zerocrossing circuit that needs AC for triggering.

http://www.fotek.com.hk/solid/SSR-2.htm

Bertus

 

Hello,

As said, it might not fall off.
An other possibility is that it will do nothing at all.
It has a zerocrossing circuit that needs AC for triggering.

http://www.fotek.com.hk/solid/SSR-2.htm

Bertus

That too! ... some optocouplers feature synchronized triggering that will only activate when the AC wave crosses 0V. This to minimize EMI.