SIRIUS 3RT2 contactors/contactor assemblies
2.7 Accessories
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
161
2.7.2 Auxiliary switch blocks
2.7.2.1 Description
Function
The 3RH21 contactor relays and 3RT2 power contactors in size S00 feature an integrated
auxiliary contact. The 3RT2 power contactors in size S0 have two integrated auxiliary
contacts. Attachable auxiliary switch blocks can be used to add up to four further contacts to
the auxiliary contacts already integrated in the basic devices.
Versions and designs
The auxiliary switch blocks for expanding the auxiliary contacts are available with screw-
type, spring-loaded, and ring cable lug connections, in the following designs:
● On the front (uniform for sizes S00 and S0)
● Lateral (size-specific)
The 3RT2 power contactors can be expanded by means of auxiliary switch blocks mounted
on the front or laterally. Only auxiliary switch blocks for mounting on the front can be
attached to the 3RH21 contactor relays.
The table below depicts the auxiliary switch blocks for mounting on the front, which can be
used across the board for contactors of sizes S00 and S0.
Table 2- 23 Auxiliary switch blocks for mounting on the front
Connection system Design of the auxiliary switch
block
Order number
1-pole 3RH2911-1AA/BA
2-pole 3RH2911-1LA/MA
4-pole 3RH2911-1H/F/G
3RH2911-1FB11 (11U)
3RH2911-1FB22 (11, 11U)
4-pole (with overlapping
contacting)
3RH2911-1FC22 (22U)
Screw connection
Solid-state compatible 3RH2911-1NF
4-pole 3RH2911-2H/F/G
3RH2911-2FB11 (11U)
3RH2911-2FB22 (11, 11U)
4-pole (with overlapping
contacting)
3RH2911-2FC22 (22U)
Spring-loaded connection
Solid-state compatible 3RH2911-2NF
4-pole 3RH2911-4H/F/G Ring cable lug connection
Solid-state compatible 3RH2911-4NF
To Next Page
Loading...
Need help?
General
