Siemens SIRIUS 3RT - Page 491

Circuit diagrams
11.7 Contactor assemblies for star-delta (wye-delta) start (S6 / S10 / S12)
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
491
Maintained-contact operation
S0
"OFF" button
S1
"ON" button
S
Maintained-contact switch
K1
Line contactor
K2
Star contactor
K3
Delta contactor
K4
Solid-state time-delay auxiliary switch block or timing relay
F0
Fuses
F1
Overload relay