Feeder Assembly, Type Of Coordination 1 With Fuses - Siemens SIRIUS 3RW50 Manual

Example circuits
A.1 Main circuit connection
A.1.2

Feeder assembly, type of coordination 1 with fuses

If a main or line contactor is used, it should not be connected between the
3RW50 soft starter and the motor. The 3RW50 soft starter could otherwise indicate a
"Missing load voltage" fault in case of a start command and delayed connection of the
contactor.
Feeder assembly, type of coordination 1 with fuses
If galvanic isolation is required, install a main or line contactor between the
3RW50 soft starter and the fuses.
F1
Q21
Q11
M1
PE
204
gG full-range fuse for cable and line protection (e.g. 3NA3)
Main or line contactor for galvanic isolation
3RW50 soft starter
Motor
Protective conductor
SIRIUS 3RW50 soft starter
Manual, 09/2019, A5E35628455002A/RS-AA/001