Typical circuits
A.1 Typical circuits for 3RM1 Standard
SIRIUS 3RM1 motor starter
146 Manual, 11/2013, A5E0345285095020A/RS-AB/002
Direct-on-line starter 24 V DC with switch operation and single-phase motor
The current is drawn via only one phase. The motor is connected at T3. The second
connection is directly at the neutral conductor. On the 3RM1 motor starter, T1 is wired direct
with T2, and L2 direct with L3.
Connection IN2 on reversing starters must not be used in the case of single-phase motors.
Damage from operating capacitive loads
When using capacitive loads, the switching components in the 3RM1 motor starter can be
damaged by excessively high making currents.
Do not operate capacitive loads such as frequency converters on the 3RM1 motor starter.
Operation of single-phase capacitor motors is admissible.
In this operating mode, switching on and off is carried out only with connection IN1.
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