Siemens 3RW51 Series Manual page 60

Wiring
4.4 Connecting the external bypass contactor to the 3RW51 soft starter
Procedure for bar connection - sizes 3 and 4
Pay attention to the representation on the packaging of the connection set.
● Connect connection 7 / B1, 8 / B2, 9 / B3 to the supply network.
● Connect connection 2 / T1, 4 / T2, 6 / T3 to the motor.
Example circuit
60
Manual, 06/2019, A5E37108631002A/RS-AB/002
3RW51 Soft Starter