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Forum Index : Electronics : Solid state relay - any good?

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domwild
Guru

Joined: 16/12/2005
Location: Australia
Posts: 873
Posted: 10:52am 26 Sep 2007
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Hi friends,

Bills Machinery in Perth has 500 relays, 280VAC 45A for $10 each. From little that I know about triacs, etc. I learned the following in the meantime:

To switch AC use:

Low amps - triac + snubber + opto
Middlish amps: relay
High amps: contactor

This seems to fall into the high amp category as it can switch 280V x 45A or about 12 KW resistive load.

I am easily confused!

I may need to switch 15A inductive and $10 does not seem to be much money if only I would stop drinking, so is this a good buy??

Regards,
Taxation as a means of achieving prosperity is like a man standing inside a bucket trying to lift himself up.

Winston Churchill
 
herbnz

Senior Member

Joined: 18/02/2007
Location: New Zealand
Posts: 258
Posted: 07:37pm 27 Sep 2007
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Hi
Sounds good value I have been keeping a eye out for these at present I use a relay to control 230v to my water heater as a dump load on a 10sec cycle I would like to make solid state. trouble is importing to NZ would be worth it does firm have a email address ?
But yea very uasuful units if quality Ok Opto 22 a brand name but cost maybe $40.
Herb
 
domwild
Guru

Joined: 16/12/2005
Location: Australia
Posts: 873
Posted: 04:48am 01 Oct 2007
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Herb,

Google Bills Machinery Perth - AUS. web sites only to get the email address. They did not reply to my email so I had to ring them - slack!

If you are stuck, then I can get the telephone number for you.

Regards,
Taxation as a means of achieving prosperity is like a man standing inside a bucket trying to lift himself up.

Winston Churchill
 
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