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Author Topic: Relay for light switch  (Read 2270 times)
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eyco
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« on: October 05, 2012, 01:30:00 pm »
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Hi,

Which relay is best and safe to use for light switching (230V). I need it to be small one.

Do I need relay which can handle 400V or more? Is it better to use SSR?

I will appriciate any help

Thx
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CrossRoads
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« Reply #1 on: October 05, 2012, 01:47:20 pm »
 Bigger Bigger Smaller Smaller Reset Reset
Add a geographic location to your profile so we can recommend suitable suppliers.
If I recommend a place in western New York, USA, that will not really help if you're in Finland or someplace for example.
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eyco
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« Reply #2 on: October 05, 2012, 01:51:20 pm »
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Thx, added, I usually by at ebay  ...

But the question is general. If I switch 230V should I have 400V or relay of 240 is enough?
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« Reply #3 on: October 05, 2012, 01:55:59 pm »
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240V should be enough - may want to go higher for some margin if controlling high currents.
Typically the worst that would happen is the contacts would fuse together if the current is too high.
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17

SM.Ching
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« Reply #4 on: October 07, 2012, 03:57:41 am »
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I use Omron MKS2P relay for the snooker table light. The relay handle 6 unit 240V 20W and 3 unit 240V 10W fluorescent lamp.
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zoomkat
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« Reply #5 on: October 07, 2012, 03:15:32 pm »
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$2 shipped seems like a reasonable deal.

 http://www.ebay.com/itm/1-Channel-5V-Relay-Module-for-Arduino-PIC-ARM-DSP-AVR-/130776167678?pt=Vintage_Electronics_R2&hash=item1e72ddf4fe
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« Reply #6 on: April 21, 2013, 09:17:49 am »
 Bigger Bigger Smaller Smaller Reset Reset
Sorry to bring back a bit of an old thread, but I was wondering how you got on as I am looking to do the same?

Also is using USB chargers as linked really that safe? I've seen a few reports of them exploding and catching fire. It's one thing to happen when plugged into a socket vs inside the wall!
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