Siemens SIRIUS 3RT - Conductor Cross-Sections; Conductor Cross-Sections for Screw-Type Connection Systems

Connection
8.2 Conductor cross-sections
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
230 Manual, 09/2017, A5E03656507120A/RS-AE/006
8.2
Conductor cross-sections
8.2.1
Conductor cross-sections for screw-type connection systems
Conductor cross-sections for screw-type connection systems
The tables below define the permissible conductor cross-sections for main terminals and
auxiliary conductor connections in sizes S00 ... S3 for screw-type connection systems.
Table 8- 1 Main conductors of size S00 with M3 combination screws
Contactors
Tool Pozidriv size PZ 2, Ø 5 … 6 mm
Tightening torque
0.8 - 1.2 Nm
Solid and stranded
2 x (0.5 ... 1.5) mm²
2 x (0.75 ... 2.5) mm²
Max. 2 x 4 mm²
Finely stranded with end
sleeve
2 x (0.5 ... 1.5) mm²
2 x (0.75 ... 2.5) mm²
AWG
2 x (20 … 16)
2 x (18 … 14)
2 x 12
1)
Only 1 conductor can be clamped on the stand-alone assembly support.
Table 8- 2 Main conductors of size S0 with M4 combination screws
Contactors
Tool Pozidriv size PZ 2, Ø 5 … 6 mm
Tightening torque
2.0 ... 2.5 Nm
Solid and stranded
2 x (1.0 ... 2.5) mm²
2 x (2.5 ... 10) mm²
Finely stranded with end
sleeve
2 x (1 ... 2.5) mm²
2 x (2.5 ... 6) mm²
Max. 1 x 10 mm²
AWG
2 x (16 ... 12)
2 x (14 ... 8)
1)
Only 1 conductor can be clamped on the stand-alone assembly support.