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

["Lehane Kellett" <lehane@xxxxxxxxxxxxxxxxxxx>]

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 25=
A one has plenty of headroom. The control voltage varies by model but is
us=
ually a wide spec - I control the SSR from an xAP Netiom at 12V. Don't
forg=
et to independently protect the AC supply.

New from RS they're about =A320 but I see on *bay there are some at =A36
ea=
ch....

Lehane




--- In ukha_d@xxxxxxx, "Gary" <questuk1@...> wrote:
>
> Hi
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> I would like to control my 3kw Immersion Heater, but not sure what to
use=
?
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> X10 modules I don't think are powerful enough?
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> Relay, wouldn't this just arc and weld itself together after a few
tries?
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> Triac's get very hot at this load?
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> Any ideas very welcome, ideally would like to buy a ready made pcb or
mod=
ule, cost is an issue.
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> Thanks all
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> Regards=20
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> Gary
>




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