Siemens SIRIUS 3RU - Conductor Cross-Sections for Ring Cable Lug Connection System

Connection
8.4 Connection cross-sections
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
112 Manual, 09/2016, A5E03656507420A/RS-AB/003
8.4.3
Conductor cross-sections for ring cable lug connection system
Conductor cross-sections for ring cable lug connection system
The tables below define the permissible conductor cross-sections for main terminals and
auxiliary conductor connections in sizes S00 and S0 for ring cable lug connection systems.
Table 8- 16 Main conductors and auxiliary conductors of size S00 with M3 combination screws
SIRIUS devices
Tool
Pozidriv size 2,
Ø 5 to 6 mm
Tightening torque
0.8 to 1.2 Nm
Ring cable lug
1)
d
2
= min. 3.2 mm
d
3
= max. 7.5 mm
Table 8- 17 Main conductors and auxiliary conductors of size S0 with M4 combination screws
SIRIUS devices
Tool
Pozidriv size 2,
Ø 5 to 6 mm
Tightening torque
2.0 to 2.5 Nm
Ring cable lug
1)
d
2
= min. 4.3 mm
d
3
= max. 12.2 mm