SIRIUS 3RV2 motor starter protectors
4.2 Product description
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
383
4.2.4 Motor starter protectors
1 Terminals:
Up to two conductors with different cross-sections can be connected for the main and auxiliary
circuits. The auxiliary circuit can be connected using either screw terminals or spring-loaded
terminals. Some device versions are also available with ring cable lug connection.
2 Rotary operating mechanism:
For switching on and off, displaying a possible tripping operation, integrated locking device
3 Label
4 Connection for mounting contactors, solid-state contactors, and soft starters in various
connection systems:
Direct mounting using link modules
Separately using connecting cables
5 TEST function:
Facilitates the testing of the release mechanism.
6 Motor current setting:
The large rotary button provides an easy means of setting the device to the rated motor current.
Figure 4-1 Equipment, 3RV20 motor starter protectors
A sealable transparent cover can be optionally mounted (accessory). The cover prevents the
motor setting being adjusted (this option is not available for 3RV23/3RV27/3RV28).
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