Siemens SIRIUS 3RF Series

SIRIUS 3RA21/22 load feeders
6.10 Technical data
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
621
6.10.3 Conductor cross sections - auxiliary circuit
Table 6- 33 3RA2 fuseless load feeders - Conductor cross-sections (auxiliary circuit)
Type 3RA2.1 3RA2.2
Size S00 S0
Number of poles 3 3
Conductor cross-sections - auxiliary circuit (size S00 and S0 contactors)
Standards
 IEC 60947-1, DIN EN 60947-1 (VDE 0660 Part 100)
 IEC 60947-2, DIN EN 60947-2 (VDE 0660 Part 101)
 IEC 60947-4-1, DIN EN 60947-4-1
(VDE 0660 Part 102)
Connection type Screw connection
Connection screw M3 (Pozidriv size PZ 2)
- Tightening torque Nm
(lb.in)
0.8 to 1.2 (7 to 10.3 lb.in)
 Solid and stranded
mm
2
2 x (0.5 to 1.5),
2 x (0.75 to 2.5)
2 x (0.5 to 1.5),
2 x (0.75 to 2.5)
 Finely stranded with end sleeve
(DIN 46228 Part 1)
mm
2
2 x (0.5 to 1.5),
2 x (0.75 to 2.5)
2 x (0.5 to 1.5),
2 x (0.75 to 2.5)
(1-wire or 2-
wire connection
possible)
 Solid or stranded, AWG cables
AWG 2 x (20 to 16),
2 x (18 to 14)
2 x (20 to 16),
2 x (18 to 14)
Connection type Spring-loaded connection
 Solid and stranded
mm
2
2 x (0.5 to 4) 2 x (0.5 to 2.5)
 Finely stranded without end
sleeve
mm
2
2 x (0.5 to 2.5) 2 x (0.5 to 1.5)
 Finely stranded with end sleeve
(DIN 46228 Part 1)
mm
2
2 x (0.5 to 2.5) 2 x (0.5 to 1.5)
(1-wire or 2-
wire connection
possible)
 Solid or stranded, AWG cables
AWG 2 x (20 to 12) 2 x (20 to 14)