Siemens SIRIUS 3RW52 - Page 165

Example circuits
A.1 Main circuit connection
SIRIUS 3RW52 Soft Starter
Manual, 01/2019, A5E35630451002A/RS-AD/004
165
Motor rotation in line phase direction
Q1
Motor starter protector
F3
aR partial-range fuse for protection of semiconductors (e.g. SITOR 3NE3/4 or 3NC)
F3*
gR full-range fuse for protection of semiconductors (e.g. SITOR 3NE1)
Q11
Soft starter
Q21
Main or line contactor for galvanic isolation
M1
Motor
PE
Protective conductor