Siemens SIRIUS 3RH Series - Auxiliary Switch; Description

SIRIUS 3RV2 motor starter protectors
4.9 Accessories
SIRIUS Innovations
410 System Manual, 01/2011, A8E56203870002-03
4.9.3 Auxiliary switch
4.9.3.1 Description
Function
The contacts of the auxiliary switch open and close along with the main contacts on the
motor starter protector.
Versions
Table 4- 8 Auxiliary switch versions
Auxiliary switch Versions Connection system Width Mountable
1 CO contact Screw connection
1 NO contact + 1 NC
contact
Screw-type/spring-
loaded connection,
ring cable lug
Transverse auxiliary switch
2 NO contacts Screw-type/spring-
loaded connection
45 mm Front side
Solid-state compatible
transverse auxiliary switch
for operation in dusty
atmosphere and in solid-state
circuits with low operational
currents
1 CO contact Screw connection 45 mm Front side
Cover caps for transverse
auxiliary switch
to ensure finger-safety
- Screw connection 45 mm Front side
1 NO contact + 1 NC
contact
Screw-type/spring-
loaded connection,
ring cable lug
9 mm
2 NO contacts Screw-type/spring-
loaded connection
9 mm
2 NC contacts Screw-type/spring-
loaded connection
9 mm
Lateral auxiliary switch
2 NO contacts + 2 NC
contacts
Screw connection 18 mm
Left-hand side
Note
 A maximum of four auxiliary contacts with auxiliary switches can be mounted on each
motor starter protector.
 Auxiliary switches (2 contacts) and signaling switches can be mounted individually or
together.