Museum of Plugs and Sockets logo, small Overview of uncommon types
for special purposes
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In some countries you may find sockets that either deviate from the commonly used standard type, or are fully different. Such alternative plugs and sockets, can be used for various reasons, for example:

(i) local networks meant for electronic or medical equipment that have to be protected against voltage spikes or power outage;
(ii) circuits that offer a different voltage, frequency or DC rather than AC;
(iii) outlets for equipment that do not tolerate changing line and neutral (a possibility when using Schuko or Italian type plugs);
(iv) connectors designed for special spaces (raised floors etc.).

These uncommon types are still on sale. The museum has the following examples:

 

Argentina flag
Argentina
 
Polarized Schuko plug and socket.
 
Click on plug for details >
Polarized Schuko



Australia, flagNew Zealand flag Australia and New Zealand
 
Three variant AS/NZ 3112 types, and special plugs and sockets designed for clocks.

Click on a socket for details >
Non-standard type I (1) Non-standard type I (2) Australian 110V socket, small
Clipsal clock plug
Czech Republic, flag
Slovakia, flag
Czech Republic and Slovakia
 
Six special types of plugs and sockets for 110 Volt DC and AC, 220 Volt DC, 400 Volt 3-phase and 48 Volt.
Click on socket for details >
Czech CSN 35 4517 type C1 socket



Denmark flag Denmark
 
Special types of plugs and sockets for electronic equipent, for hospital use and for ceiling mounting.

Click on a socket for details >
Danish EDB socket, small Danish hospital socket, small Danish twist lock socket, small
France flag
Sweden flag
France and Sweden
 
Special types of sockets and plugs for lamps (ceiling or wall mounting). See row above for Danish lamps socket.

Click on a socket for details >
French DCL socket
Swedish Lamputtag Denmark ↑


 ←← France
    ← Sweden

Germany flag Germany
 
Two types of polarized alternatives to CEE 7/4 and a type of connector for limited spaces.

Click on a socket or plug for details >
HNA socket, small Terko socket, small Quick connector
UK flag Great Britain
 
Two variant BS 1363 types, a special plug and socket for clocks and EPOS key plug.

Click on a socket or plug for details >
UK, non-standard type G (1) UK, non-standard type G (2) UK, non-standard type G (3) EPOS plug, small
Italy flag Italy
 
Bticino series of polarized plugs and sockets, designed as alternative to
CEI 23-50.

Click on socket for details >
Italian irreversible socket (1)


Liechtenstein flag
Liechtenstein
 
Neutrik PowerCON lockable appliance connectors that guarantee a safe connection under rugged conditions.

Click on plug for details >
Neutrik PowerCONN, small



Flag of Poland
Italian flag
Poland and Italy
 
Three Polish variant CEE 7/5 - 7/6 plugs and sockets, and one variant produced in Italy.

Click on a socket for details >
Non-standard typ E socket, small (1) Non-standard typ E socket, small (2) Non-standard typ E socket, small (3) Vimar special type E
South Africa flag
South Africa
 
SANS 164-4 comprises three types of plugs and sockets for special purposes.


Click on socket for details >
SANS 164-4 dedicated socket



 

Request for help

There are definitely more countries in which non-standard or alternative plugs and sockets are on offer*.  Any information about such material is highly appreciated. Please contact me; see  home page  for the address.

 


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