Looking for a SPDT relay

I am looking for a relay with off, on, on positions (i believe thats a SPDT) that I can control via Indigo. Suggestions?

If your looking to control DC there are a few and they make AC versions but not linked below, threads below will give you some ideas:

viewtopic.php?f=58&t=14482

viewtopic.php?f=118&t=14216

That's your SPDT etc diagrams, which don't sound to be what you're wanting, directly.

Unless it's for something like this, which would require two SPDT relays:




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You can get a mechanical switch with an open position in the middle, but not a relay. A relay can only have two states and what you're asking for has three.

To do what you want requires two separate relays. And some non-obvious wiring to make sure both can't be on at the same time. Howartp's diagram works for that.

What the problem to use any relay with two outputs - switch off one first, enable second and vice versa?

To simulate SPDT?

I should have added more information to my original post. The relay(s) need to control a 10amp two stage motor (off, low, high). If I used two relays they need to be wired in such a way that the two relays wont stay on at the same time.

Right now I am using two insteon on/off switches and hope that the software will turn one off before the other turns on. I need something better than hope.

I should have added more information to my original post. The relay(s) need to control a 10amp two stage motor (off, low, high). If I used two relays they need to be wired in such a way that the two relays wont stay on at the same time.

Howardp's wiring diagram does this for you, using two SPDT relays.

Howardp's wiring diagram does this for you, using two SPDT relays.

Yes it does.

I have a similar situation and used the same wiring configuration using two relays. All good there. However, in my case, each relay can only be powered for a 1 sec. Therefore, I need a way to have on off on. Indigo can handle the timing, but I can't seem to find a way to do the on off on triggering, without using two separate Mimolites.

Any suggestions for better solution for the on off on triggering?

Thanks in advance.

JP