Siemens SIRIUS 3RT Series System Manual page 376

SIRIUS 3RF34 solid-state switching devices
3.13 Circuit diagrams
Example circuit diagrams
The figures below show the example circuit diagrams for the solid-state contactors and solid-
state reversing contactors
Example circuit diagram for the solid-state contactor for motorized loads
F1 - 3
F4
K1
M1
R1
S1
Figure 3-36
376
Main circuit fuses (solid-state contactor recommended)
Control circuit fuse
3RF34 solid-state contactor for motorized loads
Motor
Varistor 3TX7 462-3L (recommended to maintain "surge" immunity)
"ON" switch
Example circuit diagram: Fused motor feeder with solid-state contactor for motorized
loads with DC control circuit
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03