Siemens SIRIUS 3RW55 - A.1.2 Feeder Assembly, Type of Coordination 1 with Fuses

Example circuits
A.1 Main circuit connection
SIRIUS 3RW55 soft starter
202 Manual, 08/2018, A5E35630887002A/RS-AB/002
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 soft starter and
the motor. The 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 soft starter and
the fuses.
F1
gG full-range fuse for cable and line protection (e.g. 3NA3)
Q21
Main or line contactor for galvanic isolation
Q11
Soft starter
M1
Motor
PE
Protective conductor