Heavy duty plugs and sockets
|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.|
|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.|
||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).|
Sockets and adapter outlets have to be equipped with child safely shutters according to French regulations, effective from 2001.
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.
|D i g i t a l M u s e u m o f||P l u g s a n d S o c k e t s|