see Terminal board picture
Voltage and
mains
Electrical connections
frequency
400V 2-N ~
1
2
3
50 Hz
L1
L2
1
2
3
230V 3 ~ 50 Hz
L1
L2
230V 2+2-N ~
1
2
3
50 Hz
L1
L2
Phase
Phase Neutral
Neutral
Earth
Terminal
board
Three-phase
4
5
400 2+N
N
4
5
Three-phase
230
L3
4
5
Two-phase
N1
N2
Phase
Phase
U-bolt
Neutral
Earth
connection
support
Phase
Phase
Phase
Earth
U-bolt
connection
support