Museum of Plugs and Sockets logo, small Unknown or Missing
plugs and sockets
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This page shows plugs and socket for which help by others is appreciated !
Help refers to:
1. Material in the collection that is fully unknown to me and useful information
    has not been found on internet or elsewhere.
2. Material that must exist, but is very difficult to find.
    For example, the museum has a plug, but the matching socket is missing.

Your help to find a missing item or unknown information is greatly appreciated !
>>>  Click Home for the address to contact me   <<<


Unkown plug

Legrand 3-pin plug type no. 76153

3-pin plug made by the French company Legrand.
Plug rating - neither amperage nor voltage - is indicated.
The rather thin pins (see image below) point to less than 250V.

The Legrand logo type has been introduced in 1975 and is still in use, but it seems likely that model 76153 is already quite some time out of production.

Information - summarized below - given by two museum visitors indicate that the 3-pin plug is probably an Extra Low Voltage model used as telephone plug.

Further confirmation that it is a telephone, used in Switzerland and/or elsewhere
is appreciated. See home page for the museum mail address.

Legrand Arteor 2- and 3-pin plugs

A.H. wrote:
“The plug is a earlier version of a 2 pin plug made by legrand in the Arteor range its a international plug. On legrands website elv 3 amp 2 pin version of a plug with the same shape made by arteor.”

James Tanenbaum wrote:
“I believe that is an old-style telephone plug, possibly Swiss, that was in use before the switch to the modular type with IDC crimp connections.”

Extra Low Voltage (< ca. 50V) usually have only two pins (L-N or +/-), but and additional earth pin can't be excluded. Signal transmission by old style telephone cables used also an extra low voltage, and three pins makes sense for a telephone plug.

I am grateful to A,H, and James Tanenbaum for given information.


Thanks to help of museum visitors, questions about items shown below have been answered recently !


Unknown (no longer)

Heating element
Heating element

The heat element has been found, as separate item, in a farm in Saxony, Germany by Peter W. Martin.

Thanks to Reimar Lüngen details about the use of the heat element has been clarified.

See Depot image no. 10 for details.

Rozetkus-1, multisocket for 12 Europlugs

The intially unknown outlet that may accommodate 12 Europlugs is a:

   Rozetkus-1 power strip, designed by
   Art. Lebedev Studio in Moscow.

Find information and other design outlets
on artlebedev website.

Origin of the outlet has been found thanks to research by Reimar Lüngen.


Missing  (no longer)

Greek Tripoliki socket
For decades Greece had a, nowadays rare, type of earthed sockets and plugs, known as
tripoliki mpreza (sockets) and tripoliki visma (plugs).
In 1989 Greece switched to CEE 7/3-7/4 (Schuko) standard for earthed plugs and sockets.

A Tripoliki mpriza was for many years missing in the collection, but thanks to successful investigations by Michail Kritsotakis the museum has now two old type Greek sockets.

See Greek page. for more images and information


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