SIRIUS 3RF34 solid-state switching devices
3.8 Connection
SIRIUS Innovations
344 System Manual, 01/2011, A8E56203870002-03
3.8 Connection
Connection system
All SIRIUS solid-state switching devices are characterized by the wide variety of connection
systems they support. You can choose from the following connection systems:
Screw-type connection system
Screw-type connection system is the standard technology for industrial switching devices.
Open terminals and a plus/minus screw are just two of its features. Two conductors up to
6 mm² or one conductor with a cross-section of 10 mm² can be flexibly connected in a single
terminal.
Spring-loaded connection system
This innovative technology does not use any screw connections. As a result, it is highly
resistant to vibration. Two conductors up to 2.5 mm² can be connected per terminal.
Reference
More information ... Can be found in the chapter titled
About conductor cross-sections of solid-state
switching devices
ï‚· Conductor cross-sections for solid-state
contactors (Page 352)
ï‚· Conductor cross-sections for solid-state
reversing contactors (Page 353)
3.8.1 Solid-state contactor
Terminals
Table 3- 19 Solid-state contactor
Terminal Designation
L1, L2, L3 Main circuit terminals infeed/line side
T1, T2, T3 Main circuit terminals outgoing feeder motor/load side
A1∼ Control supply voltage AC operation
A2∼ Control supply voltage AC operation
A1+ Control supply voltage DC operation (plus)
A2- Control supply voltage DC operation (minus)
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