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mehram
Associate

Join Date: Jul 2009
Posts: 36

Microswitch for Switching Mains Light

01/19/2013 11:21 AM

I want to use a 250V AC, 5A rated microswitch in a wall light switch. The device would turn a lamp on and off.

The load would vary from an 11Watt low energy bulb to a 150W halogen bulb.

Although the rating seems sufficient, is a microswitch suited for this purpose?

Are there any problems I should be aware of?

Many thanks.
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lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: microswitch for switching mains light

01/19/2013 11:28 AM

Yes.

No.

You're welcome.
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#2

Re: Microswitch for Switching Mains Light

01/19/2013 12:07 PM

Why not a regular light switch? What sort of mechanical arrangement will you use for the microswitch?

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mehram
Associate

Join Date: Jul 2009
Posts: 36
#3
In reply to #2

Re: Microswitch for Switching Mains Light

01/19/2013 6:02 PM

Happy to use any push button switch which has a pre-travel (distance before contact is made) of over 1mm and a total travel before it latches of 3mm or so. The switch is designed just to be pressed lightly to operate. I just want a switch with a long mechanical life that can handle lamp loads and won't burn out or overheat (despite being appropriately rated). If you have any suggestions, they would be welcome
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#4
In reply to #3

Re: Microswitch for Switching Mains Light

01/21/2013 3:32 AM

<...suggestions...>

Yep. Use a commercial product with the correct rating instead of home-brewing something. It saves one becoming unpopular with fire insurance companies.

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