Feeder Assembly, Type Of Coordination 1 With Fuses - Siemens SIRIUS 3RW52 Equipment Manual

Example circuits
A.1 Main circuit connection
A.1.2

Feeder assembly, type of coordination 1 with fuses

Feeder assembly
If galvanic isolation is required, install a main or line contactor between the
3RW52 soft starter and the fuses.
Do not connect the main and line contactor between the 3RW52 soft starter and the motor.
The 3RW52 soft starter could otherwise indicate a "Missing load" fault in case of a start
command and delayed connection of the contactor.
F1
Q21
Q11
M1
PE
216
gG full-range fuse for cable and line protection (e.g. 3NA3)
Main or line contactor for galvanic isolation
3RW52 soft starter
Motor
Protective conductor
Equipment Manual, 04/2020, A5E35630451002A/RS-AE/005
SIRIUS 3RW52 Soft Starter