3 phase, 3 wire voltmeter selector switch with OFF. Single hole ?2mm mounting.

Rated thermal current      20 Amp
Nominal voltage            690 V
Motor rating AC-23A        7.5 kW
Dielectric strength        6 kV
Conforms to IEC 947-3, EN60947-3, VDE 0660 part 107

Dimensions (mm)            L     A    B    C      M
                           52.5  49   43   6 max  20
Note:
R (red phase)              Live 1
Y (yellow phase)           Live 2
B (blue phase)             Live 3
N                          Neutral