Siemens SIRIUS 3RT Series System Manual page 255

Type
Size
Conductor cross-sections (1-wire or 2-wire connection possible)
Main conductor
Connection screw
Operating tool

Tightening torque

Usable ring cable lugs

- DIN 46237 with insulating
sleeve
- JIS C2805 type RAV with
insulating sleeve
- JIS C2805 type RAP with
insulating sleeve
- DIN 46234 without
insulating sleeve
- DIN 46225 without
insulating sleeve
- JIS C2805 type R without
insulating sleeve
Auxiliary conductor
Connection screw
Operating tool

Tightening torque

Usable ring cable lugs

- DIN 46237 with insulating
sleeve
- JIS C2805 type RAV with
insulating sleeve
- JIS C2805 type RAP with
insulating sleeve
- DIN 46234 without
insulating sleeve
- DIN 46225 without
insulating sleeve
- JIS C2805 type R without
insulating sleeve
If two different conductor cross-sections are being connected to one clamping point, both cross-sections must be
1)
located in the range indicated. If identical cross-sections are used, this restriction does not apply.
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
3RT20 23 3RT20 24
S0
Ring cable lug connection
M4 (Pozidriv size PZ 2)
∅ 5 to 6
Nm 2 to 2.5
mm d = min. 4.3
2
mm d = min. 12.2
3
≥
1)
A shrink-on sleeve must be used to provide additional insulation for the ring
cable lugs .
1)
Application temperature: -55 °C/+155 °C

UL 224 approved

Flame-protected

M3 (Pozidriv size PZ 2)
∅ 5 to 6
Nm 0.8 to 1.2
mm d = min. 3.2
2
mm d = min. 7.5
3
≥
1)
A shrink-on sleeve must be used to provide additional insulation for the ring
cable lugs .
1)
Application temperature: -55 °C/+155 °C

UL 224 approved

Flame-protected

SIRIUS 3RT2 contactors/contactor assemblies
3RT20 25 3RT20 26
2.8 Technical data
3RT20 27 3RT20 28
255