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Description
3.3 Hybrid technology
Circuit diagram
The semiconductors switch the motor on and off in two phases. In the switched-off state, all
three phases are opened by a relay contact.
To achieve the highest safety level SILCL 3 in accordance with EN 62061, PL e/Cat. 4 in
accordance with EN ISO 13849-1 in the case of 3RM11/3RM13 fail-safe motor starters,
further relay contacts are installed in series with the semiconductors.
Figure 3-1
28
Circuit diagram
SIRIUS 3RM1 motor starter
Manual, 06/2016, A5E0345285095020A/RS-AE/005
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