Siemens SIRIUS 3RT Series System Manual page 542

SIRIUS 3RU2/3RB3 overload relays
5.10 Technical data
Type
Size
Width
Connection type
Connection screw
Operating tool
Specified tightening torque
Usable ring cable lugs
DIN 46234 without insulating sleeve

DIN 46225 without insulating sleeve

DIN 46237 with insulating sleeve

JIS C2805 type R without insulating sleeve

JIS C2805 type RAV with insulating sleeve

JIS C2805 type RAP with 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.
2)
d
d
542
3
2
3RU21 16
S00
45 mm
Ring cable lug connection
M3, Pozidriv size 2
mm ∅ 5 to 6
Nm 0.8 to 1.2
mm d = min. 3.2,
2)
2
d = max. 7.5
2)
3
3RU21 26
S0
45 mm
M4, Pozidriv size 2
∅ 5 ... 6
2 to 2.5
d = min. 4.3,
2)
2
d = max. 12.2
2)
3
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03