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Heavy duty plugs and sockets
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In hardware stores in France you can find three types of heavy duty plugs and sockets rated at 400V, the common voltage for three-phase devices (see nos. 3, 6 and 7). Also two single phase devices will withstand this voltage, but they can also be used in a standard domestic 230V network (see also the adapter plug no. 2). Each of the items shown below are produced by the Legrand corporation.

 

French 20A single phase socket French 20A single phase adapter plug French 20A 3-phase socket French 32A sigle phase socket

French 20A single phase plug
French 20A, 4-pin 3-phase plug
French 20A 3-phase plug French 32A sigle phase plug

1, 5 Socket and plug rated at 20A, 250-400V (single phase).
2 Adapter plug which makes a 20A socket (no. 1) accessible for CEE 7/6 16A plugs, the French standard domestic type of plug.
3, 7
Socket and plug rated at 20A, 400V, three-phase. Single phase 20A plugs (no.5) do not fit in three-phase 20A sockets.
6 20A, 400V three-phase, 4-pin plug. Omission of neutral contact is no problem when a balanced load (L1, L2 and L3) is assured.
The plug does not fit in socket no. 3, because plug no. 6 has a 8.2 mm wide earth pin, rather than 6.5 mm for plug no. 7.
Plug no. 6 has been donated to the museum, see Acknowledgments.
4, 8 Socket and plug rated at 32A, 250-400V (single phase).
 
note

 
Sockets and adapter outlets have to be equipped with child safely shutters according to French regulations, effective from 2001.

 

Classic French three-phase plugs and sockets

In the past there was almost no standardisation among three-phase plugs and sockets.
A variety of of examples is shown in a separate gallery.
Click here for the classics.
French 3-phase socket and plug, small

 


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