Technical data
9.1 Motor starters
SIRIUS 3RM1 motor starter
126
Manual, 11/2013, A5E0345285095020A/RS-AB/002
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
Device protection 7 A
②
Device protection 6.1 A
③
Device protection 5.2 A
④
Device protection 4.6 A
⑤
Device protection 4.0 A
Figure 9-2
Device protection characteristic
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