Siemens SIRIUS 3RT Manual page 257

Solid-state compatible auxiliary switch blocks
Solid-state-compatible auxiliary switch blocks feature two encapsulated contacts, which are
particularly well suited to switching low voltages and currents (hard gold-plated contacts) and
for operation in dusty atmospheres. The rated operational current is I
1 to 300 mA, voltage: 3 to 60 V.
The solid-state compatible auxiliary switch blocks for mounting on the front are available with
screw-type, spring-loaded, and ring cable lug connections. The laterally mountable solid-
state compatible auxiliary switch blocks are available with spring-loaded connections.
Auxiliary switch blocks with overlapping contacting
Auxiliary switch blocks with overlapping contacting are available with screw-type and spring-
loaded connections. The table below shows the versions of the auxiliary switch blocks
available with overlapping contacting.
Table 9- 7
Size S00 ... S3
3RH2911-1FC22 (22U)
3RH2911-1FB11 (11U)
3RH2911-1FB22 (11, 11U)
Travel diagrams
The travel diagrams below for auxiliary switches in sizes S00 and S0 apply to standard
auxiliary switches and to leading/lagging contacts.
Figure 9-5
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
Auxiliary switch blocks with overlapping contacting
Auxiliary switch version
22U
11U
11, 11U
Travel diagrams for auxiliary switches (sizes S00 and S0)
2 NO contacts + 2 NC contacts
1 NO contact + 1 NC contact
1 NO contact + 1 NC contact + 1 leading NO contact +
1 lagging NC contact
Accessories
9.3 Auxiliary switch blocks
/AC-14 and DC-13:
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