Wever-Ducre L-Connector 3-phase
With the L-connector you can make an angle of 90 degrees
Grounding: left or right
Colors white or black
3 phase means: 3 x 230Volt, you can switch your lighting in 3 groups
Make sure that the earth is on the right customer of the accessory, if the earth conductor is in the rail on the right, then order accessories with the earth on the right.