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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment

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Old 10th Jul 2017, 3:40 pm   #1
Sparks
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Default Mystery switch

Can anyone please identify this switch for me, its likely purpose and so on. It's momentary and I think it's telephone -related. Thankyou.
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Old 10th Jul 2017, 3:44 pm   #2
ms660
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Default Re: Mystery switch

On Google:

http://www.britishtelephones.com/switch1.htm

Lawrence.
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Old 10th Jul 2017, 3:44 pm   #3
Station X
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Default Re: Mystery switch

It is telephony related. It's a single pole double throw micro switch.

The common version was Switch 5A/3 which was used in 706 telephones and possibly others. I assume the /4 variant fits another type of telephone.

Soeone on here will know.
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Old 10th Jul 2017, 4:05 pm   #4
ThePillenwerfer
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Default Re: Mystery switch

It's for a 746, probably a recall button — or rather the switch with which the button engages.

See page 3 of this: http://www.samhallas.co.uk/repositor.../0000/N848.pdf
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Old 10th Jul 2017, 4:07 pm   #5
Malcolm G6ANZ
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Default Re: Mystery switch

It looks like a standard V3 microswitch with a custom actuator.
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Old 10th Jul 2017, 5:12 pm   #6
Sparks
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Default Re: Mystery switch

Thanks everyone. I uncovered one still in place in an old 746 - appears to be used as a recall button.
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Old 10th Jul 2017, 8:37 pm   #7
Oldcodger
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Default Re: Mystery switch

Depends on the BUTTON- it can be a recall (non locking ) or bell off ( locking ) as the wish desires.
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