Description
WE ARE RICH ELECTRONICS
WE PURCHASE AND RECYCLE
SURPLUS ELECTRONIC
COMPONENTS AND EQUIPMENT!
For sale here we have the above…
1 Piece
Made by Burgess Gateshead England for B.T.
To be used on the 700 series phones (now obsolete). These were originally meant to be supplied to Kenya but as a result of a cancelled contract have remained in storage for the last thirty years.
BT part no 5A-4, they have a special moulding which includes a ‘push in’ mounting bracket, this could be ignored or even removed if not required. By cutting or grinding off the ‘special’ moulding, the switch then becomes in effect a standard SPCO push button 10A 250V microswitch.
Push button action.
SPCO – Single pole changeover.
3 Robust solder terminals already soldered to brown, blue and grey 200mm wires, with ‘horseshoe’ type crimp terminals attached.
The grey terminal at the bottom is the ‘common’ the blue terminal is open and the brown is closed.
Changeover operation – on actuation, pushing button down changes over the ‘CLOSED or ON’ circuit between the bottom grey terminal and top brown terminal, to open or turn off this circuit. The connection between the bottom grey terminal and middle blue terminal is then momentarily ‘CLOSED or turned ON’, releasing the button reverses this process.
Dimensions : 27mm long 16mm high 10mm wide.
These are genuine vintage Burgess switches made by them for British Telecom. They were described as a 5Amp rated switch, working on the old 700 series of telephones which operated on 12Vdc, however we can find no datasheet to confirm this, and on comparing this switch to other Burgess switches we have in stock, their construction would suggest they have a much higher Amperage and Voltage handling capacity – possibly up to 10 or even 15Amp and 240V. We recommend only competent electronics engineers purchase these so they can test and evaluate them prior to use, any feedback to us on their operating specifications would be very welcome.
Any bulk orders could be listed separately and would be liable to substantial discounts!
PLEASE NOTE!
These came to us as part of a lot of surplus stock from a large distribution Co. and have been kept in storage for some time, they are however pristine, stored with us still in their original sealed packaging and ‘as new’ in all respects, the photographs are representative of their excellent condition, and, as with all our products they come with a full guarantee.
If you have similar items to this, or indeed any electronic components that are surplus to requirements please contact us with details.
