Siemens SIRIUS 3RH Series, System Manual

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SIRIUS 3RU2/3RB3 overload relays
5.10 Technical data
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
545
Type 3RU21 16 3RU21 26
Size S00 S0
Width 45 mm 45 mm
Connection type Ring cable lug connection
Connection screw M3, Pozidriv size 2
Operating tool mm ∅ 5 to 6
Specified tightening torque Nm 0.8 to 1.2
Usable ring cable lugs mm

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
d
22)
= min. 3.2, d
32)
= max. 7.5
1) If two different conductor cross-sections are being connected to one clamping point, both cross-sections must be
located in the range indicated. If identical cross-sections are used, this restriction does not apply.
2)
d
2
d
3