Siemens SIRIUS 3RT - Page 241

Connection
8.2 Conductor cross-sections
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
241
Table 8- 23 Main conductors of size S3 with M6 screws
SIRIUS devices
Tool 4 mm Allen key
Tightening torque
4.5 ... 6.0 Nm
Busbars (M6 x 25)
2 x 12 x 4
Ring cable lug
1)
d
2
= min. 6.3 mm
d
3
= max. 19.0 mm
Ring cable lug cover
3RT1946-4EA1
1)
The following ring cable lugs are approved for achieving the required clearances and
creepage distances:
● For applications according to IEC 60947-1:
– DIN 46237 (with insulating sleeve)
– JIS CS805 type RAV (with insulating sleeve)
– JIS CS805 type RAP (with insulating sleeve)
● For applications according to UL 508:
– DIN 46 234 (without insulating sleeve)
– DIN 46225 (without insulating sleeve)
– JIS CS805 (without insulating sleeve)
A shrink-on sleeve must be used to insulate ring cable lugs without an insulating sleeve. The
following conditions must be met:
● Operating temperature: -55 °C to +155 °C
● UL 224 approved
● Flame-protected
DANGER
Hazardous voltage.
Will cause death or serious injury.
Only use approved ring cable lugs to meet the required clearances and creepage
distances.