Device for Connection of Luminaires (DCL) is a European standard for ceiling light fixtures introduced in 2005 and refined in 2009. It uses 6 ampere. DCL must carry the CE marking as per the Low Voltage Directive. DCL is only allowed to be installed with ground.
Example of DCL socket.
Socket internals
Pin
Color
Function
1
Load (L)
2
Load (L)
3
Protective earth
4
Protective earth
5
Neutral (N)
6
Neutral (N)
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passed. A third contact for a connection to earth is intended to protect against insulation failure of the connected device. Some early unearthed plug...
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