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electricians--what is this?


 
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farmerjohn
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PostPosted: Tue Jan 02, 2018 2:52 am    Post subject: electricians--what is this? Reply to specific post Reply with quote

Remodeled a house recently and found these on the wall behind a cover plate, wires feeding the outlet box were dead, wires out led to under a window and cut off, maybe an old baseboard heater? They have a little button on the top, electric wholesale store did not know what they were. ??????

 
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olddog
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PostPosted: Tue Jan 02, 2018 3:10 am    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

Google micro switch.
 
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Moonlite37
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PostPosted: Tue Jan 02, 2018 4:08 am    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

Lightning arrestor for an outside antenna? Just a guess
 
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jon f mn
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PostPosted: Tue Jan 02, 2018 4:37 am    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

Called a micro switch. The button will either open or close the circuit
 
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Steve@Advance
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PostPosted: Tue Jan 02, 2018 4:41 am    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

It's a switch.

Push the little black button, it will click, the contacts will open.

It's not all there, normally there would be a lever on top, something to actuate the button.

Very common item.
 
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buickanddeere
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PostPosted: Tue Jan 02, 2018 4:44 am    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote


Sometimes installed to only allow the air conditioner to operate when the windows are closed . There are some people that for what ever reason. They think they want a window open for fresh air when the heating or cooling is operating.
 
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flembo
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PostPosted: Tue Jan 02, 2018 6:28 am    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

No it's all there it is as others said a Micro switch.
 
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dr sportster
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PostPosted: Tue Jan 02, 2018 8:33 am    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

I have micro switches like that on my drag bike to kill the ignition momentarily while the air cylinder pops it into the next gear.
 
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Steve@Advance
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PostPosted: Tue Jan 02, 2018 10:23 am    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

Technically...

"Micro Switch" is a brand name. They make hundreds, thousands, of different types of switches, photocells, electronic components.

The generic name would be a "plunger actuated snap-acting switch".

Typically found inside some type enclosure, used as a limit switch.
 
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Ted in NE-OH
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PostPosted: Tue Jan 02, 2018 6:19 pm    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

May be part of a burglar alarm system , circuit opens when window is opened to set off alarm.
 
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old bc
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PostPosted: Tue Jan 02, 2018 9:22 pm    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

It is a limit switch.
Switch

 
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Isie Shank
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PostPosted: Tue Jan 02, 2018 9:26 pm    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

Micro switch

 
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used red MN
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PostPosted: Tue Jan 02, 2018 9:51 pm    Post subject: Re: electricians--what is this? Reply to specific post Reply with quote

Better look for a new more knowledgeable electrical wholesaler. Lol. What did you do to the wall in the area you found the switches? Tap around on it is there a hidden safe there? Maybe the switches triggered and alarm when a painting was moved covering it. Humorous antidote I thought.
 
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