Siemens SIRIUS 3RM1 Manual page 146

Technical data
9.7 Overload protection/device protection characteristic
Equipment protection
In addition to the motor protection function, the 3RM1 motor starters also protect themselves
against overload. This means that in the case of 3RM1 motor starters with a rated
operational current of 7 A, an overload trip may occur in the upper current range before the
motor protection trips. If, for example, 8-fold current flows in the case of an unloaded motor
memory model and a set current of 7 A, tripping takes place after approximately one second.
①
②
③
④
⑤
Figure 9-2
146
Device protection 7 A
Device protection 6.1 A
Device protection 5.2 A
Device protection 4.6 A
Device protection 4.0 A
Device protection characteristic
SIRIUS 3RM1 motor starter
Manual, 06/2016, A5E0345285095020A/RS-AE/005