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#173879 - 01/21/08 03:07 PM Jamb Switch
bot540 Offline
Member
Registered: 09/14/04
Posts: 174
Loc: Vernon Hills, IL
At this job I am trimming the whips for the jamb switches were ran to the top of the door. Now I am finding out they only make a low voltage jamb switch for the top. So to get these to work I now need to install a transformer and a contactor right? Does anyone know of a relay that acts as both?(trans and contactor)
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#173880 - 01/21/08 03:17 PM Re: Jamb Switch [Re: bot540]
KJay Offline
Member
Registered: 11/27/07
Posts: 763
Loc: MA, USA
I'm not sure exactly what you need for your application, but Amprobe used to make a low-voltage relay and jamb switch combo. I used to use alot of them for closet doors in residential bedrooms.
I will try and find the part number.
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#173881 - 01/21/08 03:40 PM Re: Jamb Switch [Re: KJay]
jay8 Offline
Member
Registered: 07/28/05
Posts: 183
Loc: Vancouver, BC
So if I read the post correctly you are looking for line voltage door jamb switch. IF so, check the Leviton 1865 door jamb switch, 3A/125Volt. Comes with a small junction box to terminate in.
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#173882 - 01/21/08 04:32 PM Re: Jamb Switch [Re: jay8]
bot540 Offline
Member
Registered: 09/14/04
Posts: 174
Loc: Vernon Hills, IL
Jay, those will only work when installed on the side of the door.
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Jesus may have been a capenter,but God was an electrician.Genesis1:3
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#173883 - 01/21/08 04:40 PM Re: Jamb Switch [Re: bot540]
KJay Offline
Member
Registered: 11/27/07
Posts: 763
Loc: MA, USA
Here is the Amprobe relay part number.
You can use those low-voltage roller type jamb switches with it if you have 120V at the fixture you want to switch.
Not cheap as I remember though, around $30.00 each.
You can download instruction manual at Amprobes website.
Hope it's what you need.

Model: RC-120S
Remcon Relay Switch
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#173889 - 01/21/08 08:10 PM Re: Jamb Switch [Re: KJay]
twh Offline
Member
Registered: 03/11/04
Posts: 901
Loc: Regina, Sask.
Re: relay and transformer combination - that would be like one used in a furnace. For example:
http://www.white-rodgers.com/wrdhom/common/ptech/furnace/furnace_06.htm#8A05A-4
Check the rating of the contacts. They may only be rated for motors.
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#173895 - 01/22/08 04:20 AM Re: Jamb Switch [Re: twh]
bot540 Offline
Member
Registered: 09/14/04
Posts: 174
Loc: Vernon Hills, IL
KJay that is exactly what I need. Thanks for the help everyone.
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Jesus may have been a capenter,but God was an electrician.Genesis1:3
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#174034 - 01/25/08 11:30 AM Re: Jamb Switch [Re: bot540]
pauluk Offline
Member
Registered: 08/11/01
Posts: 7520
Loc: Norfolk, England
About 30 years ago I picked up a Tab book with dozens of home projects, many based around a type of relay which I'd never seen over here at the time, nor anywhere since.

It was basically a relay which incorporated transformer action to provide a low-voltage switching line. The primary winding is fed directly with a constant 120V supply, and the secondary winding forms the control circuit, so when you short the secondary it increases the magnetic field enough to close the contacts.

Does anyone still make these?
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#174043 - 01/25/08 01:35 PM Re: Jamb Switch [Re: pauluk]
Trumpy Offline


Member
Registered: 07/05/02
Posts: 8211
Loc: SI,New Zealand
Paul,
That wouldn't be a Hysteresis relay by any chance?
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