Re: Re: Need to switch immersion heater on/off possibly with relay?

[Tim Hawes <timsyahoo@xxxxxxxxxxxxxx>]

Hi Lehane,

Was there any particular reason you chose an SSR instead of a
conventional relay, other than that they are silent?

Also, do they need much current on the "coil" side?

Thanks,

Tim.


On Sat, Apr 18, 2009 at 9:03 AM, Lehane Kellett
<lehane@xxxxxxx> wrote:
> I use a 25A SSR (Solid State Relay) which is silent. Since they are
used =
in industrial plant you can get them in many sizes. 3kW is about 13A, so a
=
25A one has plenty of headroom. The control voltage varies by model but is
=
usually a wide spec - I control the SSR from an xAP Netiom at 12V. Don't
fo=
rget to independently protect the AC supply.
>
> New from RS they're about =A320 but I see on *bay there are some at
=A36 =
each....
>
> Lehane


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