Siemens SIRIUS 3RU - Page 8

Table of contents
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
8 Manual, 09/2016, A5E03656507420A/RS-AB/003
11.3 Performance features .......................................................................................................... 148
11.3.1 General data ........................................................................................................................ 148
11.3.2 Protection functions - overview ............................................................................................ 149
11.3.3 Equipment ............................................................................................................................ 150
11.3.4 Features of overload relays ................................................................................................. 151
12 Circuit diagrams ................................................................................................................................... 153
12.1 CAx data .............................................................................................................................. 153
12.2 Internal circuit diagrams 3RU2 ............................................................................................. 154
12.3 3RB20 internal circuit diagrams ........................................................................................... 156
12.4 3RB21 internal circuit diagrams ........................................................................................... 157
12.5 Internal circuit diagrams 3RB30 ........................................................................................... 158
12.6 Internal circuit diagrams 3RB31 ........................................................................................... 160
12.7 Wiring examples................................................................................................................... 162
A Types of coordination ........................................................................................................................... 165
B References .......................................................................................................................................... 167
B.1 References ........................................................................................................................... 167
B.2 Manuals - SIRIUS Modular System ..................................................................................... 168
B.3 More information .................................................................................................................. 170
C Dimension drawings (dimensions in mm) ............................................................................................. 171
C.1 CAx data .............................................................................................................................. 171
C.2 Dimension drawings for 3RU21 thermal overload relays .................................................... 172
C.3 Dimension drawings for 3RB20 / 3RB21 electronic overload relay ..................................... 180
C.4 Dimension drawings for 3RB30/3RB31 electronic overload relays ..................................... 182
C.5 Drilling diagram for 3RT contactors ..................................................................................... 194
C.6 Dimension drawings and drilling plan for 3RU29.6 stand-alone assembly supports ........... 198
Index ................................................................................................................................................... 203