PLUGS


Click here for a world wide selection of telephone line plugs.

 

Part No. Use
Plug No. 201 Switchboard plug with 2 contacts.

Size - 81mm x 12mm.

A gauge.

 

Plug No. 235A Plug with integral lamp.  Used on 50 volt supplies to 
provide power to portable small tools, such as soldering irons.

Takes a Lamp No. 2 (voltage)

They were still in production - go to the Astralux web site

Old style is shown to the top.  If fitted with a lamp, the earlier plugs used to get very hot - so beware of fitting a lamp!

B gauge.

Plug No. 244A 2 pole Krone plug used for testing.

Bridges contacts instead of breaking them in strips connections.

 

 
Plug No. 301 Switchboard plug with 3 contacts.

Size - 81mm x 12mm.

A gauge.

 

Plug No. 309 Three way plug.

Size - 80mm x 10mm.

C Gauge.
 

 
Plug No. 310 Three way plug.

Size - 82mm x 11mm.

B Gauge.
 

 
Plug No. 316 Three way plug used on most late GPO switchboards.

Size - 79mm x 11mm.

They were still in production - go to the Astralux web site.

B gauge.

 


 

Plug No. 319 Three way plug.

Size - 80 x 10.

C Gauge.
 

 
Plug No. 404 Bakelite covered, large, brass plug, used before 
the introduction of the Plug 420.

Four way.

Size - 97mm x 29mm.

Used with Jack No. 19 and 65.
 


 

Plug No. 406 Four way flat plug.

Size - 65mm x 44mm x 21mm.

Used with Jack No. 8.
 

Plug No. 418 Plastic covered 4 way plug.  Similar in construction to Plug No. 420.

Superseded by the Plug No. 420.

Drawing CD1027.
 

 
Plug No. 420 Plastic covered 4 way plug, universally used by the BPO.

The plug has a frusto-conical shaped tip, contact
rings separated by insulators along the barrel, screw on cover and cable retention feature. For use with Jacks No . 84 and 95.

Colours:-
Black, Grey and Ivory.

Introduced Circa 1957 and superseded the Plug No. 418.

Size - 54mm x 21mm.

Lastly manufactured by Astralux.

Drawings
SD73 and 90842.

Used with many Jacks.
 


 
Plug No. 430A Left hand latch - 4 way - used on handset cords.

Used with CW1311 cord.

Click here for more information


 
Plug No. 431A Right hand latch - 4 way - used on line cords.

Used with CW1311 cord.

Click here for more information


 
Plug No. 432A Right hand latch - 4 way.

Used with CW1311 cord.

Click here for more information

 

 
Plug No. 440A 4 pole Krone plug used for testing.

Breaks contacts in disconnect style strips connections.

 

 
Plug No. 501 Five way flat plug.

Size - 65mm x 56mm x 21mm.

 

 
Plug No. 503 Five way plug used on Keysender No. 5.

This Plug locates into a standard switchboard dial mounting.

 

 
Plug No. 505 5 way variant of Plug No. 420.

Last manufacturer was Astralux.


 
Plug No. 620A 6 way variant of Plug No. 505
 
 
Plug No. 630 As Plug No. 430 but with 6 connectors
 
Plug No. 631 As plug No. 431 but with 6 connectors
 
 
Plug No. 2404 24 way plug used to connect HES transfer units to the internal multiple wiring.
 


 

Plug No 2404A 24 way plug used to connect HES No. 1 telephones unit to the internal multiple wiring.

Has a buzzer incorporated in the design.
 


 
Plug No. 3201 32 way plug used on relay sets and selectors in telephone equipment racks.

Locates in a Jack No. 129
 


 

Plug No. 4001A 40 way plug used to connect HES No. 2 telephones to the internal multiple wiring.

Has a buzzer incorporated in the design.
 


 
 
 

WE4 Used for terminating handset cords
 
WE6 Used for terminating line cords
 
RJ45 8 way plug used for terminating computer network
cables - see Category 5 wiring

 

   

 
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Last revised: November 23, 2021

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