Siemens 340 Manual page 126

Technical data
9.1 Motor starters
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
model and a set current of 7 A, tripping takes place after approximately one second.
①
②
③
④
⑤
Figure 9-2
126
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, 11/2013, A5E0345285095020A/RS-AB/002