Museum of Plugs and Sockets logo, small CEE 7/17 standard
16A not earthed plugs
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CEE 7…
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CEE 7/7


CEE 7/17 are not earthed plugs that fit in unearthed CEE 7/1 and eathed CEE 7/3 (Schuko), CEE 7/5 (French*). Compatibility of CEE 7/17 in European countries is summarized in a map.

CEE 7/17 plugs are also designated as contour plugs. The outline (without cutouts) is similar to Schuko plugs.
CEE 7/17 can be regarded as the 16A version of CEE 7/16 Europlugs that are limited to 2.5A

* CEE 7/5 sockets and 7/6 plugs are often designated as French type, but it is debatable whether 'French' is correct; see page about origin of earth pin sockets.


There are two variants of CEE 7/17  plugs. They differ with respect to cutouts for earth clips of CEE 7/3 sockets and the earth pin of CEE 7/5 sockets. Both variants fit in both sockets.

CEE7/17 symmatrical plug CEE 7/3, 7/5 and 7/17 outlines
CEE7/17 asymmatrical plug

1 Symmetrical variant of CEE 7/17 has two circular cutouts. It can be inserted in two different positions in a CEE 7/5 socket and is therefore always a non-polarized plug. The symmetrical variant is far more common than the asymmetrical variant (no. 2).
Manufacturer: Volex, brand name used by Electrium Group, owned by Siemens AG UK.
2 Plug no. 2  has an asymmetrical base plate with a single circular cutout and a smaller space to accomodate a CEE 7/3 earth clip. Plug can be inserted in one orientation only in CEE 7/5 socket, which ensures that socket polarity is preserved in plugs.


Rewirable  CEE 7/17 plugs
Rewirable plugs are common for CEE 7/7, but rewirable CEE 7/17 plugs are not permitted in some European countries. For example in the Netherlands they are banned to prevent that a Schuko plug would be replaced by a non-earthed plug.
Image nos 3 to 6 show four rewirable plugs.

Rewirable CEE 7/17 plug made by Legrand Rewirable CEE 7/17 plug made by Legrand, inside
Rewirable CEE 7/17 plug made by Kaiser

Asymmetrical rewirable CEE 7/17 plug Symmetrical rewirable CEE 7/17 plug
Precursor model of a CEE 7/17 plug

3a, b
Asymmetrical CEE 7/17 rewirable plug, rated at 16A - 250V. The plug, made by Legrand, has a French (NF 61314 / UF1624) and Polish (B) certification mark. The vertical part of the housing consists of two halves that are connected to the basal part by flexible plastic hinges. A single screw keeps the halves close together. Image 3b shows the fold-out plug (upside down view compared to plug in image 3a).
4 Symmetrical CEE 7/17 semi* rewireable plug. Rating: 16A - 250V. Plug has no VDE or other certification mark.
The synthetic rubber plug housing offers protection against ingression of water and dust according to IP44 grade.
Manufacturer: Martin Kaiser in Hochstadt am Main, Germany.
* semi means that the two parts of the plug are fixed with one-way screws. that cannot be removed by conventional tools because the screws can only be turned in one direction.
5 Asymmetrical, rewireable plug, comparable to CEE 7/17. Pins have a diameter of 4.0 mm. Thinner pins explain a rating of 6A - 250V, rather than 16A for standard CEE 7/17 plugs that have 4.8 mm pins. Brand name EL-Bi, Istanbul,Turkey. The company was founded in 1987 under the name Elbistan Hirdavat (Elbistan Ironmongery). In 2013 EL-Bi became a member of the ABB Group. The plug has a Turkish certification mark (TSE).   {WM}
6 Symmetrical, rewirable plug, rated at 6A - 250V. The rating of only 6A allows the use of thinner (4.0 mm) pins
The plug has 4.0 mm pins. Brand name unknown; possibly a Polish plug.  {WM}
7 Plug that can be regarded as a precursor of CEE 7/17. The not earthed plug fits in CEE 7/3 sockets, but not in CEE 7/5.
Rating: 6A - 250V; pins are partially split and have a diameter of 4 mm.
The plugs is not rewirable.
It has the same look as 1950s-60s Bakelite 2-pin plugs (see classic continental European plugs for examples), but the round base plate has the outline of Schuko plugs. The plug has been made of a red melamine resin. It has no certification marks and no indication of the manufacturer.   {RH
Two-pin, 10A plug that fits in Schuko and French sockets. The plug was used in former Eastern Germany (DDR) and dates back to the 1970s-80s. It had the same functionality as nowadays non-polarized CEE 7/17 plugs (see no. 1).
This type of plug was often used for export products. It has certification marks for Western European countries, as VDE (Germany), KEMA (Netherlands) and Scandinavian countries (D, S, FI). A DDR quality mark that was typical for home market products is missing. Brand name: Krania; now: Krania Kabel-Stecker GmbH, Kranichfeld, Thuringia, Germany.   {WM}

former DDR 2-pin plug
CEE 7/17 connector plug CEE 7/17 multi-outlet for extension cord

The CEE 7/17 standard does not include sockets and connector plugs, but they do exist, usually as part of an extension lead. They are incompatible with earthed CEE 7/4 and 7/6 plugs, a provision that forces the use an earthed - three wire - extention cord for appliances that need a functional protective earth connection.
9 Connector plug of an extension cord, compatible only with CEE 7/17 plugs or CEE 7/16 Europlugs. The two protuberances, indicated by green arrows, block CEE 7/4 and 7/6 plugs, but also not earthed 16A CEE 7/2 plugs that have a round base plate.
Manufacturer: Ningbo Kaifeng Electrical Appliances Co., China.
10 Part of a multi-outlet extension socket. It has features comparable connector no. 9 The socket has been made in France by an unknown company named BRUN.   {WM}


Compatibility of CEE 7/7 and CEE 7/17 plugs in Europe

A large majority of Europeans are able to use CEE 7/7 as earthed plug and CEE 7/17 as non-earthed plug; see map below.
CEE 7/7 and CEE 7/17 have the potential to become the standard continental European plugs (Switzerland excluded).
However, it can only be an effective standard when restrictions on selling rewireable CEE 7/7 and CEE 7/17 (preferably
the asymmetrical variant) are lifted. Up to now in some European countries rewireable CEE 7/17 plugs are not yet allowed.

Note that 2.5A non-earthed Europlugs (CEE 7/16) are already accepted in each of the continental European countries.
Click here for another, more detailed map and table that show which of worldwide used domestic plugs can be used throughout Europe.
Map of Europe green Countries that have chosen for either the CEE 7/3-4 or 7/5-6 standard and thus accept CEE 7/7 and CEE 7/17 plugs.
In Eastern Europe you may find unearthed sockets that only accept plugs with 4.0 mm pins (former 6A-10A Soviet standard), rather than nowadays 4.8 mm pins for 16A plugs.
yellow In Italy some new houses, businesses and hotels are now equipped with universal sockets that both accept Italian, and CEE 7/7 (with functional earthing) and CEE 7/17 plugs.
Italian CEI 23-50 10A and 16A sockets do not accept CEE 7/7 and CEE 7/17 plugs.
brown In Denmark DS Afsnit 107-2-D1 is the dominant standard. Danish sockets accept CEE 7/17 plugs. When CEE 7/7 plugs are used there is no earth connection. However, from 2008 CEE 7/5 sockets are allowed. CEE 7/3 sockets are allowed from 2011, but both types are not yet common.
purple United Kingdom and Ireland have their own BS 1363 standard, which is incompatible with CEE 7/7 and CEE 7/17. An adapter is also needed to use CEE 7/16 (Europlugs).
red Switzerland has an unique standard, which is incompatible with CEE 7/7 and CEE 7/17. Also Liechtenstein has adopted the Swiss standard. Swiss sockets do accept Europlugs.


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